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authorschneefux <schneefux+commit@schneefux.xyz>2014-06-11 16:02:42 +0200
committerschneefux <schneefux+commit@schneefux.xyz>2016-08-15 20:02:42 +0200
commit74c5e46910fa66da0e8f11ed9ec1f8e0df3b63d7 (patch)
tree34d3c884ab2ab548310dbe2f4bc67a626bcc8449 /js/pdf.js
parent83b02062f91d616a01a5daa035fbca7d097adc05 (diff)
downloadwvs-vplan-74c5e46910fa66da0e8f11ed9ec1f8e0df3b63d7.tar.gz
wvs-vplan-74c5e46910fa66da0e8f11ed9ec1f8e0df3b63d7.zip
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-/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
-/* Copyright 2012 Mozilla Foundation
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-/*jshint globalstrict: false */
-
-// Initializing PDFJS global object (if still undefined)
-if (typeof PDFJS === 'undefined') {
- (typeof window !== 'undefined' ? window : this).PDFJS = {};
-}
-
-PDFJS.version = '1.0.276';
-PDFJS.build = 'a09aecb';
-
-(function pdfjsWrapper() {
- // Use strict in our context only - users might not want it
- 'use strict';
-
-/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
-/* Copyright 2012 Mozilla Foundation
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-/* globals Cmd, ColorSpace, Dict, MozBlobBuilder, Name, PDFJS, Ref, URL,
- Promise */
-
-'use strict';
-
-var globalScope = (typeof window === 'undefined') ? this : window;
-
-var isWorker = (typeof window == 'undefined');
-
-var FONT_IDENTITY_MATRIX = [0.001, 0, 0, 0.001, 0, 0];
-
-var TextRenderingMode = {
- FILL: 0,
- STROKE: 1,
- FILL_STROKE: 2,
- INVISIBLE: 3,
- FILL_ADD_TO_PATH: 4,
- STROKE_ADD_TO_PATH: 5,
- FILL_STROKE_ADD_TO_PATH: 6,
- ADD_TO_PATH: 7,
- FILL_STROKE_MASK: 3,
- ADD_TO_PATH_FLAG: 4
-};
-
-var ImageKind = {
- GRAYSCALE_1BPP: 1,
- RGB_24BPP: 2,
- RGBA_32BPP: 3
-};
-
-// The global PDFJS object exposes the API
-// In production, it will be declared outside a global wrapper
-// In development, it will be declared here
-if (!globalScope.PDFJS) {
- globalScope.PDFJS = {};
-}
-
-globalScope.PDFJS.pdfBug = false;
-
-PDFJS.VERBOSITY_LEVELS = {
- errors: 0,
- warnings: 1,
- infos: 5
-};
-
-// All the possible operations for an operator list.
-var OPS = PDFJS.OPS = {
- // Intentionally start from 1 so it is easy to spot bad operators that will be
- // 0's.
- dependency: 1,
- setLineWidth: 2,
- setLineCap: 3,
- setLineJoin: 4,
- setMiterLimit: 5,
- setDash: 6,
- setRenderingIntent: 7,
- setFlatness: 8,
- setGState: 9,
- save: 10,
- restore: 11,
- transform: 12,
- moveTo: 13,
- lineTo: 14,
- curveTo: 15,
- curveTo2: 16,
- curveTo3: 17,
- closePath: 18,
- rectangle: 19,
- stroke: 20,
- closeStroke: 21,
- fill: 22,
- eoFill: 23,
- fillStroke: 24,
- eoFillStroke: 25,
- closeFillStroke: 26,
- closeEOFillStroke: 27,
- endPath: 28,
- clip: 29,
- eoClip: 30,
- beginText: 31,
- endText: 32,
- setCharSpacing: 33,
- setWordSpacing: 34,
- setHScale: 35,
- setLeading: 36,
- setFont: 37,
- setTextRenderingMode: 38,
- setTextRise: 39,
- moveText: 40,
- setLeadingMoveText: 41,
- setTextMatrix: 42,
- nextLine: 43,
- showText: 44,
- showSpacedText: 45,
- nextLineShowText: 46,
- nextLineSetSpacingShowText: 47,
- setCharWidth: 48,
- setCharWidthAndBounds: 49,
- setStrokeColorSpace: 50,
- setFillColorSpace: 51,
- setStrokeColor: 52,
- setStrokeColorN: 53,
- setFillColor: 54,
- setFillColorN: 55,
- setStrokeGray: 56,
- setFillGray: 57,
- setStrokeRGBColor: 58,
- setFillRGBColor: 59,
- setStrokeCMYKColor: 60,
- setFillCMYKColor: 61,
- shadingFill: 62,
- beginInlineImage: 63,
- beginImageData: 64,
- endInlineImage: 65,
- paintXObject: 66,
- markPoint: 67,
- markPointProps: 68,
- beginMarkedContent: 69,
- beginMarkedContentProps: 70,
- endMarkedContent: 71,
- beginCompat: 72,
- endCompat: 73,
- paintFormXObjectBegin: 74,
- paintFormXObjectEnd: 75,
- beginGroup: 76,
- endGroup: 77,
- beginAnnotations: 78,
- endAnnotations: 79,
- beginAnnotation: 80,
- endAnnotation: 81,
- paintJpegXObject: 82,
- paintImageMaskXObject: 83,
- paintImageMaskXObjectGroup: 84,
- paintImageXObject: 85,
- paintInlineImageXObject: 86,
- paintInlineImageXObjectGroup: 87,
- paintImageXObjectRepeat: 88,
- paintImageMaskXObjectRepeat: 89,
- paintSolidColorImageMask: 90,
- constructPath: 91
-};
-
-// A notice for devs. These are good for things that are helpful to devs, such
-// as warning that Workers were disabled, which is important to devs but not
-// end users.
-function info(msg) {
- if (PDFJS.verbosity >= PDFJS.VERBOSITY_LEVELS.infos) {
- console.log('Info: ' + msg);
- }
-}
-
-// Non-fatal warnings.
-function warn(msg) {
- if (PDFJS.verbosity >= PDFJS.VERBOSITY_LEVELS.warnings) {
- console.log('Warning: ' + msg);
- }
-}
-
-// Fatal errors that should trigger the fallback UI and halt execution by
-// throwing an exception.
-function error(msg) {
- // If multiple arguments were passed, pass them all to the log function.
- if (arguments.length > 1) {
- var logArguments = ['Error:'];
- logArguments.push.apply(logArguments, arguments);
- console.log.apply(console, logArguments);
- // Join the arguments into a single string for the lines below.
- msg = [].join.call(arguments, ' ');
- } else {
- console.log('Error: ' + msg);
- }
- console.log(backtrace());
- UnsupportedManager.notify(UNSUPPORTED_FEATURES.unknown);
- throw new Error(msg);
-}
-
-function backtrace() {
- try {
- throw new Error();
- } catch (e) {
- return e.stack ? e.stack.split('\n').slice(2).join('\n') : '';
- }
-}
-
-function assert(cond, msg) {
- if (!cond) {
- error(msg);
- }
-}
-
-var UNSUPPORTED_FEATURES = PDFJS.UNSUPPORTED_FEATURES = {
- unknown: 'unknown',
- forms: 'forms',
- javaScript: 'javaScript',
- smask: 'smask',
- shadingPattern: 'shadingPattern',
- font: 'font'
-};
-
-var UnsupportedManager = PDFJS.UnsupportedManager =
- (function UnsupportedManagerClosure() {
- var listeners = [];
- return {
- listen: function (cb) {
- listeners.push(cb);
- },
- notify: function (featureId) {
- warn('Unsupported feature "' + featureId + '"');
- for (var i = 0, ii = listeners.length; i < ii; i++) {
- listeners[i](featureId);
- }
- }
- };
-})();
-
-// Combines two URLs. The baseUrl shall be absolute URL. If the url is an
-// absolute URL, it will be returned as is.
-function combineUrl(baseUrl, url) {
- if (!url) {
- return baseUrl;
- }
- if (/^[a-z][a-z0-9+\-.]*:/i.test(url)) {
- return url;
- }
- var i;
- if (url.charAt(0) == '/') {
- // absolute path
- i = baseUrl.indexOf('://');
- if (url.charAt(1) === '/') {
- ++i;
- } else {
- i = baseUrl.indexOf('/', i + 3);
- }
- return baseUrl.substring(0, i) + url;
- } else {
- // relative path
- var pathLength = baseUrl.length;
- i = baseUrl.lastIndexOf('#');
- pathLength = i >= 0 ? i : pathLength;
- i = baseUrl.lastIndexOf('?', pathLength);
- pathLength = i >= 0 ? i : pathLength;
- var prefixLength = baseUrl.lastIndexOf('/', pathLength);
- return baseUrl.substring(0, prefixLength + 1) + url;
- }
-}
-
-// Validates if URL is safe and allowed, e.g. to avoid XSS.
-function isValidUrl(url, allowRelative) {
- if (!url) {
- return false;
- }
- // RFC 3986 (http://tools.ietf.org/html/rfc3986#section-3.1)
- // scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
- var protocol = /^[a-z][a-z0-9+\-.]*(?=:)/i.exec(url);
- if (!protocol) {
- return allowRelative;
- }
- protocol = protocol[0].toLowerCase();
- switch (protocol) {
- case 'http':
- case 'https':
- case 'ftp':
- case 'mailto':
- return true;
- default:
- return false;
- }
-}
-PDFJS.isValidUrl = isValidUrl;
-
-function shadow(obj, prop, value) {
- Object.defineProperty(obj, prop, { value: value,
- enumerable: true,
- configurable: true,
- writable: false });
- return value;
-}
-
-var PasswordResponses = PDFJS.PasswordResponses = {
- NEED_PASSWORD: 1,
- INCORRECT_PASSWORD: 2
-};
-
-var PasswordException = (function PasswordExceptionClosure() {
- function PasswordException(msg, code) {
- this.name = 'PasswordException';
- this.message = msg;
- this.code = code;
- }
-
- PasswordException.prototype = new Error();
- PasswordException.constructor = PasswordException;
-
- return PasswordException;
-})();
-
-var UnknownErrorException = (function UnknownErrorExceptionClosure() {
- function UnknownErrorException(msg, details) {
- this.name = 'UnknownErrorException';
- this.message = msg;
- this.details = details;
- }
-
- UnknownErrorException.prototype = new Error();
- UnknownErrorException.constructor = UnknownErrorException;
-
- return UnknownErrorException;
-})();
-
-var InvalidPDFException = (function InvalidPDFExceptionClosure() {
- function InvalidPDFException(msg) {
- this.name = 'InvalidPDFException';
- this.message = msg;
- }
-
- InvalidPDFException.prototype = new Error();
- InvalidPDFException.constructor = InvalidPDFException;
-
- return InvalidPDFException;
-})();
-
-var MissingPDFException = (function MissingPDFExceptionClosure() {
- function MissingPDFException(msg) {
- this.name = 'MissingPDFException';
- this.message = msg;
- }
-
- MissingPDFException.prototype = new Error();
- MissingPDFException.constructor = MissingPDFException;
-
- return MissingPDFException;
-})();
-
-var NotImplementedException = (function NotImplementedExceptionClosure() {
- function NotImplementedException(msg) {
- this.message = msg;
- }
-
- NotImplementedException.prototype = new Error();
- NotImplementedException.prototype.name = 'NotImplementedException';
- NotImplementedException.constructor = NotImplementedException;
-
- return NotImplementedException;
-})();
-
-var MissingDataException = (function MissingDataExceptionClosure() {
- function MissingDataException(begin, end) {
- this.begin = begin;
- this.end = end;
- this.message = 'Missing data [' + begin + ', ' + end + ')';
- }
-
- MissingDataException.prototype = new Error();
- MissingDataException.prototype.name = 'MissingDataException';
- MissingDataException.constructor = MissingDataException;
-
- return MissingDataException;
-})();
-
-var XRefParseException = (function XRefParseExceptionClosure() {
- function XRefParseException(msg) {
- this.message = msg;
- }
-
- XRefParseException.prototype = new Error();
- XRefParseException.prototype.name = 'XRefParseException';
- XRefParseException.constructor = XRefParseException;
-
- return XRefParseException;
-})();
-
-
-function bytesToString(bytes) {
- var length = bytes.length;
- var MAX_ARGUMENT_COUNT = 8192;
- if (length < MAX_ARGUMENT_COUNT) {
- return String.fromCharCode.apply(null, bytes);
- }
- var strBuf = [];
- for (var i = 0; i < length; i += MAX_ARGUMENT_COUNT) {
- var chunkEnd = Math.min(i + MAX_ARGUMENT_COUNT, length);
- var chunk = bytes.subarray(i, chunkEnd);
- strBuf.push(String.fromCharCode.apply(null, chunk));
- }
- return strBuf.join('');
-}
-
-function stringToArray(str) {
- var length = str.length;
- var array = [];
- for (var i = 0; i < length; ++i) {
- array[i] = str.charCodeAt(i);
- }
- return array;
-}
-
-function stringToBytes(str) {
- var length = str.length;
- var bytes = new Uint8Array(length);
- for (var i = 0; i < length; ++i) {
- bytes[i] = str.charCodeAt(i) & 0xFF;
- }
- return bytes;
-}
-
-function string32(value) {
- return String.fromCharCode((value >> 24) & 0xff, (value >> 16) & 0xff,
- (value >> 8) & 0xff, value & 0xff);
-}
-
-function log2(x) {
- var n = 1, i = 0;
- while (x > n) {
- n <<= 1;
- i++;
- }
- return i;
-}
-
-function readInt8(data, start) {
- return (data[start] << 24) >> 24;
-}
-
-function readUint16(data, offset) {
- return (data[offset] << 8) | data[offset + 1];
-}
-
-function readUint32(data, offset) {
- return ((data[offset] << 24) | (data[offset + 1] << 16) |
- (data[offset + 2] << 8) | data[offset + 3]) >>> 0;
-}
-
-// Lazy test the endianness of the platform
-// NOTE: This will be 'true' for simulated TypedArrays
-function isLittleEndian() {
- var buffer8 = new Uint8Array(2);
- buffer8[0] = 1;
- var buffer16 = new Uint16Array(buffer8.buffer);
- return (buffer16[0] === 1);
-}
-
-Object.defineProperty(PDFJS, 'isLittleEndian', {
- configurable: true,
- get: function PDFJS_isLittleEndian() {
- return shadow(PDFJS, 'isLittleEndian', isLittleEndian());
- }
-});
-
- // Lazy test if the userAgant support CanvasTypedArrays
-function hasCanvasTypedArrays() {
- var canvas = document.createElement('canvas');
- canvas.width = canvas.height = 1;
- var ctx = canvas.getContext('2d');
- var imageData = ctx.createImageData(1, 1);
- return (typeof imageData.data.buffer !== 'undefined');
-}
-
-Object.defineProperty(PDFJS, 'hasCanvasTypedArrays', {
- configurable: true,
- get: function PDFJS_hasCanvasTypedArrays() {
- return shadow(PDFJS, 'hasCanvasTypedArrays', hasCanvasTypedArrays());
- }
-});
-
-var Uint32ArrayView = (function Uint32ArrayViewClosure() {
-
- function Uint32ArrayView(buffer, length) {
- this.buffer = buffer;
- this.byteLength = buffer.length;
- this.length = length === undefined ? (this.byteLength >> 2) : length;
- ensureUint32ArrayViewProps(this.length);
- }
- Uint32ArrayView.prototype = Object.create(null);
-
- var uint32ArrayViewSetters = 0;
- function createUint32ArrayProp(index) {
- return {
- get: function () {
- var buffer = this.buffer, offset = index << 2;
- return (buffer[offset] | (buffer[offset + 1] << 8) |
- (buffer[offset + 2] << 16) | (buffer[offset + 3] << 24)) >>> 0;
- },
- set: function (value) {
- var buffer = this.buffer, offset = index << 2;
- buffer[offset] = value & 255;
- buffer[offset + 1] = (value >> 8) & 255;
- buffer[offset + 2] = (value >> 16) & 255;
- buffer[offset + 3] = (value >>> 24) & 255;
- }
- };
- }
-
- function ensureUint32ArrayViewProps(length) {
- while (uint32ArrayViewSetters < length) {
- Object.defineProperty(Uint32ArrayView.prototype,
- uint32ArrayViewSetters,
- createUint32ArrayProp(uint32ArrayViewSetters));
- uint32ArrayViewSetters++;
- }
- }
-
- return Uint32ArrayView;
-})();
-
-var IDENTITY_MATRIX = [1, 0, 0, 1, 0, 0];
-
-var Util = PDFJS.Util = (function UtilClosure() {
- function Util() {}
-
- Util.makeCssRgb = function Util_makeCssRgb(rgb) {
- return 'rgb(' + rgb[0] + ',' + rgb[1] + ',' + rgb[2] + ')';
- };
-
- // Concatenates two transformation matrices together and returns the result.
- Util.transform = function Util_transform(m1, m2) {
- return [
- m1[0] * m2[0] + m1[2] * m2[1],
- m1[1] * m2[0] + m1[3] * m2[1],
- m1[0] * m2[2] + m1[2] * m2[3],
- m1[1] * m2[2] + m1[3] * m2[3],
- m1[0] * m2[4] + m1[2] * m2[5] + m1[4],
- m1[1] * m2[4] + m1[3] * m2[5] + m1[5]
- ];
- };
-
- // For 2d affine transforms
- Util.applyTransform = function Util_applyTransform(p, m) {
- var xt = p[0] * m[0] + p[1] * m[2] + m[4];
- var yt = p[0] * m[1] + p[1] * m[3] + m[5];
- return [xt, yt];
- };
-
- Util.applyInverseTransform = function Util_applyInverseTransform(p, m) {
- var d = m[0] * m[3] - m[1] * m[2];
- var xt = (p[0] * m[3] - p[1] * m[2] + m[2] * m[5] - m[4] * m[3]) / d;
- var yt = (-p[0] * m[1] + p[1] * m[0] + m[4] * m[1] - m[5] * m[0]) / d;
- return [xt, yt];
- };
-
- // Applies the transform to the rectangle and finds the minimum axially
- // aligned bounding box.
- Util.getAxialAlignedBoundingBox =
- function Util_getAxialAlignedBoundingBox(r, m) {
-
- var p1 = Util.applyTransform(r, m);
- var p2 = Util.applyTransform(r.slice(2, 4), m);
- var p3 = Util.applyTransform([r[0], r[3]], m);
- var p4 = Util.applyTransform([r[2], r[1]], m);
- return [
- Math.min(p1[0], p2[0], p3[0], p4[0]),
- Math.min(p1[1], p2[1], p3[1], p4[1]),
- Math.max(p1[0], p2[0], p3[0], p4[0]),
- Math.max(p1[1], p2[1], p3[1], p4[1])
- ];
- };
-
- Util.inverseTransform = function Util_inverseTransform(m) {
- var d = m[0] * m[3] - m[1] * m[2];
- return [m[3] / d, -m[1] / d, -m[2] / d, m[0] / d,
- (m[2] * m[5] - m[4] * m[3]) / d, (m[4] * m[1] - m[5] * m[0]) / d];
- };
-
- // Apply a generic 3d matrix M on a 3-vector v:
- // | a b c | | X |
- // | d e f | x | Y |
- // | g h i | | Z |
- // M is assumed to be serialized as [a,b,c,d,e,f,g,h,i],
- // with v as [X,Y,Z]
- Util.apply3dTransform = function Util_apply3dTransform(m, v) {
- return [
- m[0] * v[0] + m[1] * v[1] + m[2] * v[2],
- m[3] * v[0] + m[4] * v[1] + m[5] * v[2],
- m[6] * v[0] + m[7] * v[1] + m[8] * v[2]
- ];
- };
-
- // This calculation uses Singular Value Decomposition.
- // The SVD can be represented with formula A = USV. We are interested in the
- // matrix S here because it represents the scale values.
- Util.singularValueDecompose2dScale =
- function Util_singularValueDecompose2dScale(m) {
-
- var transpose = [m[0], m[2], m[1], m[3]];
-
- // Multiply matrix m with its transpose.
- var a = m[0] * transpose[0] + m[1] * transpose[2];
- var b = m[0] * transpose[1] + m[1] * transpose[3];
- var c = m[2] * transpose[0] + m[3] * transpose[2];
- var d = m[2] * transpose[1] + m[3] * transpose[3];
-
- // Solve the second degree polynomial to get roots.
- var first = (a + d) / 2;
- var second = Math.sqrt((a + d) * (a + d) - 4 * (a * d - c * b)) / 2;
- var sx = first + second || 1;
- var sy = first - second || 1;
-
- // Scale values are the square roots of the eigenvalues.
- return [Math.sqrt(sx), Math.sqrt(sy)];
- };
-
- // Normalize rectangle rect=[x1, y1, x2, y2] so that (x1,y1) < (x2,y2)
- // For coordinate systems whose origin lies in the bottom-left, this
- // means normalization to (BL,TR) ordering. For systems with origin in the
- // top-left, this means (TL,BR) ordering.
- Util.normalizeRect = function Util_normalizeRect(rect) {
- var r = rect.slice(0); // clone rect
- if (rect[0] > rect[2]) {
- r[0] = rect[2];
- r[2] = rect[0];
- }
- if (rect[1] > rect[3]) {
- r[1] = rect[3];
- r[3] = rect[1];
- }
- return r;
- };
-
- // Returns a rectangle [x1, y1, x2, y2] corresponding to the
- // intersection of rect1 and rect2. If no intersection, returns 'false'
- // The rectangle coordinates of rect1, rect2 should be [x1, y1, x2, y2]
- Util.intersect = function Util_intersect(rect1, rect2) {
- function compare(a, b) {
- return a - b;
- }
-
- // Order points along the axes
- var orderedX = [rect1[0], rect1[2], rect2[0], rect2[2]].sort(compare),
- orderedY = [rect1[1], rect1[3], rect2[1], rect2[3]].sort(compare),
- result = [];
-
- rect1 = Util.normalizeRect(rect1);
- rect2 = Util.normalizeRect(rect2);
-
- // X: first and second points belong to different rectangles?
- if ((orderedX[0] === rect1[0] && orderedX[1] === rect2[0]) ||
- (orderedX[0] === rect2[0] && orderedX[1] === rect1[0])) {
- // Intersection must be between second and third points
- result[0] = orderedX[1];
- result[2] = orderedX[2];
- } else {
- return false;
- }
-
- // Y: first and second points belong to different rectangles?
- if ((orderedY[0] === rect1[1] && orderedY[1] === rect2[1]) ||
- (orderedY[0] === rect2[1] && orderedY[1] === rect1[1])) {
- // Intersection must be between second and third points
- result[1] = orderedY[1];
- result[3] = orderedY[2];
- } else {
- return false;
- }
-
- return result;
- };
-
- Util.sign = function Util_sign(num) {
- return num < 0 ? -1 : 1;
- };
-
- // TODO(mack): Rename appendToArray
- Util.concatenateToArray = function concatenateToArray(arr1, arr2) {
- Array.prototype.push.apply(arr1, arr2);
- };
-
- Util.prependToArray = function concatenateToArray(arr1, arr2) {
- Array.prototype.unshift.apply(arr1, arr2);
- };
-
- Util.extendObj = function extendObj(obj1, obj2) {
- for (var key in obj2) {
- obj1[key] = obj2[key];
- }
- };
-
- Util.getInheritableProperty = function Util_getInheritableProperty(dict,
- name) {
- while (dict && !dict.has(name)) {
- dict = dict.get('Parent');
- }
- if (!dict) {
- return null;
- }
- return dict.get(name);
- };
-
- Util.inherit = function Util_inherit(sub, base, prototype) {
- sub.prototype = Object.create(base.prototype);
- sub.prototype.constructor = sub;
- for (var prop in prototype) {
- sub.prototype[prop] = prototype[prop];
- }
- };
-
- Util.loadScript = function Util_loadScript(src, callback) {
- var script = document.createElement('script');
- var loaded = false;
- script.setAttribute('src', src);
- if (callback) {
- script.onload = function() {
- if (!loaded) {
- callback();
- }
- loaded = true;
- };
- }
- document.getElementsByTagName('head')[0].appendChild(script);
- };
-
- return Util;
-})();
-
-/**
- * PDF page viewport created based on scale, rotation and offset.
- * @class
- * @alias PDFJS.PageViewport
- */
-var PageViewport = PDFJS.PageViewport = (function PageViewportClosure() {
- /**
- * @constructor
- * @private
- * @param viewBox {Array} xMin, yMin, xMax and yMax coordinates.
- * @param scale {number} scale of the viewport.
- * @param rotation {number} rotations of the viewport in degrees.
- * @param offsetX {number} offset X
- * @param offsetY {number} offset Y
- * @param dontFlip {boolean} if true, axis Y will not be flipped.
- */
- function PageViewport(viewBox, scale, rotation, offsetX, offsetY, dontFlip) {
- this.viewBox = viewBox;
- this.scale = scale;
- this.rotation = rotation;
- this.offsetX = offsetX;
- this.offsetY = offsetY;
-
- // creating transform to convert pdf coordinate system to the normal
- // canvas like coordinates taking in account scale and rotation
- var centerX = (viewBox[2] + viewBox[0]) / 2;
- var centerY = (viewBox[3] + viewBox[1]) / 2;
- var rotateA, rotateB, rotateC, rotateD;
- rotation = rotation % 360;
- rotation = rotation < 0 ? rotation + 360 : rotation;
- switch (rotation) {
- case 180:
- rotateA = -1; rotateB = 0; rotateC = 0; rotateD = 1;
- break;
- case 90:
- rotateA = 0; rotateB = 1; rotateC = 1; rotateD = 0;
- break;
- case 270:
- rotateA = 0; rotateB = -1; rotateC = -1; rotateD = 0;
- break;
- //case 0:
- default:
- rotateA = 1; rotateB = 0; rotateC = 0; rotateD = -1;
- break;
- }
-
- if (dontFlip) {
- rotateC = -rotateC; rotateD = -rotateD;
- }
-
- var offsetCanvasX, offsetCanvasY;
- var width, height;
- if (rotateA === 0) {
- offsetCanvasX = Math.abs(centerY - viewBox[1]) * scale + offsetX;
- offsetCanvasY = Math.abs(centerX - viewBox[0]) * scale + offsetY;
- width = Math.abs(viewBox[3] - viewBox[1]) * scale;
- height = Math.abs(viewBox[2] - viewBox[0]) * scale;
- } else {
- offsetCanvasX = Math.abs(centerX - viewBox[0]) * scale + offsetX;
- offsetCanvasY = Math.abs(centerY - viewBox[1]) * scale + offsetY;
- width = Math.abs(viewBox[2] - viewBox[0]) * scale;
- height = Math.abs(viewBox[3] - viewBox[1]) * scale;
- }
- // creating transform for the following operations:
- // translate(-centerX, -centerY), rotate and flip vertically,
- // scale, and translate(offsetCanvasX, offsetCanvasY)
- this.transform = [
- rotateA * scale,
- rotateB * scale,
- rotateC * scale,
- rotateD * scale,
- offsetCanvasX - rotateA * scale * centerX - rotateC * scale * centerY,
- offsetCanvasY - rotateB * scale * centerX - rotateD * scale * centerY
- ];
-
- this.width = width;
- this.height = height;
- this.fontScale = scale;
- }
- PageViewport.prototype = /** @lends PDFJS.PageViewport.prototype */ {
- /**
- * Clones viewport with additional properties.
- * @param args {Object} (optional) If specified, may contain the 'scale' or
- * 'rotation' properties to override the corresponding properties in
- * the cloned viewport.
- * @returns {PDFJS.PageViewport} Cloned viewport.
- */
- clone: function PageViewPort_clone(args) {
- args = args || {};
- var scale = 'scale' in args ? args.scale : this.scale;
- var rotation = 'rotation' in args ? args.rotation : this.rotation;
- return new PageViewport(this.viewBox.slice(), scale, rotation,
- this.offsetX, this.offsetY, args.dontFlip);
- },
- /**
- * Converts PDF point to the viewport coordinates. For examples, useful for
- * converting PDF location into canvas pixel coordinates.
- * @param x {number} X coordinate.
- * @param y {number} Y coordinate.
- * @returns {Object} Object that contains 'x' and 'y' properties of the
- * point in the viewport coordinate space.
- * @see {@link convertToPdfPoint}
- * @see {@link convertToViewportRectangle}
- */
- convertToViewportPoint: function PageViewport_convertToViewportPoint(x, y) {
- return Util.applyTransform([x, y], this.transform);
- },
- /**
- * Converts PDF rectangle to the viewport coordinates.
- * @param rect {Array} xMin, yMin, xMax and yMax coordinates.
- * @returns {Array} Contains corresponding coordinates of the rectangle
- * in the viewport coordinate space.
- * @see {@link convertToViewportPoint}
- */
- convertToViewportRectangle:
- function PageViewport_convertToViewportRectangle(rect) {
- var tl = Util.applyTransform([rect[0], rect[1]], this.transform);
- var br = Util.applyTransform([rect[2], rect[3]], this.transform);
- return [tl[0], tl[1], br[0], br[1]];
- },
- /**
- * Converts viewport coordinates to the PDF location. For examples, useful
- * for converting canvas pixel location into PDF one.
- * @param x {number} X coordinate.
- * @param y {number} Y coordinate.
- * @returns {Object} Object that contains 'x' and 'y' properties of the
- * point in the PDF coordinate space.
- * @see {@link convertToViewportPoint}
- */
- convertToPdfPoint: function PageViewport_convertToPdfPoint(x, y) {
- return Util.applyInverseTransform([x, y], this.transform);
- }
- };
- return PageViewport;
-})();
-
-var PDFStringTranslateTable = [
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0x2D8, 0x2C7, 0x2C6, 0x2D9, 0x2DD, 0x2DB, 0x2DA, 0x2DC, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x2022, 0x2020, 0x2021, 0x2026, 0x2014,
- 0x2013, 0x192, 0x2044, 0x2039, 0x203A, 0x2212, 0x2030, 0x201E, 0x201C,
- 0x201D, 0x2018, 0x2019, 0x201A, 0x2122, 0xFB01, 0xFB02, 0x141, 0x152, 0x160,
- 0x178, 0x17D, 0x131, 0x142, 0x153, 0x161, 0x17E, 0, 0x20AC
-];
-
-function stringToPDFString(str) {
- var i, n = str.length, strBuf = [];
- if (str[0] === '\xFE' && str[1] === '\xFF') {
- // UTF16BE BOM
- for (i = 2; i < n; i += 2) {
- strBuf.push(String.fromCharCode(
- (str.charCodeAt(i) << 8) | str.charCodeAt(i + 1)));
- }
- } else {
- for (i = 0; i < n; ++i) {
- var code = PDFStringTranslateTable[str.charCodeAt(i)];
- strBuf.push(code ? String.fromCharCode(code) : str.charAt(i));
- }
- }
- return strBuf.join('');
-}
-
-function stringToUTF8String(str) {
- return decodeURIComponent(escape(str));
-}
-
-function isEmptyObj(obj) {
- for (var key in obj) {
- return false;
- }
- return true;
-}
-
-function isBool(v) {
- return typeof v == 'boolean';
-}
-
-function isInt(v) {
- return typeof v == 'number' && ((v | 0) == v);
-}
-
-function isNum(v) {
- return typeof v == 'number';
-}
-
-function isString(v) {
- return typeof v == 'string';
-}
-
-function isNull(v) {
- return v === null;
-}
-
-function isName(v) {
- return v instanceof Name;
-}
-
-function isCmd(v, cmd) {
- return v instanceof Cmd && (!cmd || v.cmd == cmd);
-}
-
-function isDict(v, type) {
- if (!(v instanceof Dict)) {
- return false;
- }
- if (!type) {
- return true;
- }
- var dictType = v.get('Type');
- return isName(dictType) && dictType.name == type;
-}
-
-function isArray(v) {
- return v instanceof Array;
-}
-
-function isStream(v) {
- return typeof v == 'object' && v !== null && v !== undefined &&
- ('getBytes' in v);
-}
-
-function isArrayBuffer(v) {
- return typeof v == 'object' && v !== null && v !== undefined &&
- ('byteLength' in v);
-}
-
-function isRef(v) {
- return v instanceof Ref;
-}
-
-/**
- * Promise Capability object.
- *
- * @typedef {Object} PromiseCapability
- * @property {Promise} promise - A promise object.
- * @property {function} resolve - Fullfills the promise.
- * @property {function} reject - Rejects the promise.
- */
-
-/**
- * Creates a promise capability object.
- * @alias PDFJS.createPromiseCapability
- *
- * @return {PromiseCapability} A capability object contains:
- * - a Promise, resolve and reject methods.
- */
-function createPromiseCapability() {
- var capability = {};
- capability.promise = new Promise(function (resolve, reject) {
- capability.resolve = resolve;
- capability.reject = reject;
- });
- return capability;
-}
-
-PDFJS.createPromiseCapability = createPromiseCapability;
-
-/**
- * Polyfill for Promises:
- * The following promise implementation tries to generally implement the
- * Promise/A+ spec. Some notable differences from other promise libaries are:
- * - There currently isn't a seperate deferred and promise object.
- * - Unhandled rejections eventually show an error if they aren't handled.
- *
- * Based off of the work in:
- * https://bugzilla.mozilla.org/show_bug.cgi?id=810490
- */
-(function PromiseClosure() {
- if (globalScope.Promise) {
- // Promises existing in the DOM/Worker, checking presence of all/resolve
- if (typeof globalScope.Promise.all !== 'function') {
- globalScope.Promise.all = function (iterable) {
- var count = 0, results = [], resolve, reject;
- var promise = new globalScope.Promise(function (resolve_, reject_) {
- resolve = resolve_;
- reject = reject_;
- });
- iterable.forEach(function (p, i) {
- count++;
- p.then(function (result) {
- results[i] = result;
- count--;
- if (count === 0) {
- resolve(results);
- }
- }, reject);
- });
- if (count === 0) {
- resolve(results);
- }
- return promise;
- };
- }
- if (typeof globalScope.Promise.resolve !== 'function') {
- globalScope.Promise.resolve = function (value) {
- return new globalScope.Promise(function (resolve) { resolve(value); });
- };
- }
- if (typeof globalScope.Promise.reject !== 'function') {
- globalScope.Promise.reject = function (reason) {
- return new globalScope.Promise(function (resolve, reject) {
- reject(reason);
- });
- };
- }
- if (typeof globalScope.Promise.prototype.catch !== 'function') {
- globalScope.Promise.prototype.catch = function (onReject) {
- return globalScope.Promise.prototype.then(undefined, onReject);
- };
- }
- return;
- }
- var STATUS_PENDING = 0;
- var STATUS_RESOLVED = 1;
- var STATUS_REJECTED = 2;
-
- // In an attempt to avoid silent exceptions, unhandled rejections are
- // tracked and if they aren't handled in a certain amount of time an
- // error is logged.
- var REJECTION_TIMEOUT = 500;
-
- var HandlerManager = {
- handlers: [],
- running: false,
- unhandledRejections: [],
- pendingRejectionCheck: false,
-
- scheduleHandlers: function scheduleHandlers(promise) {
- if (promise._status == STATUS_PENDING) {
- return;
- }
-
- this.handlers = this.handlers.concat(promise._handlers);
- promise._handlers = [];
-
- if (this.running) {
- return;
- }
- this.running = true;
-
- setTimeout(this.runHandlers.bind(this), 0);
- },
-
- runHandlers: function runHandlers() {
- var RUN_TIMEOUT = 1; // ms
- var timeoutAt = Date.now() + RUN_TIMEOUT;
- while (this.handlers.length > 0) {
- var handler = this.handlers.shift();
-
- var nextStatus = handler.thisPromise._status;
- var nextValue = handler.thisPromise._value;
-
- try {
- if (nextStatus === STATUS_RESOLVED) {
- if (typeof(handler.onResolve) == 'function') {
- nextValue = handler.onResolve(nextValue);
- }
- } else if (typeof(handler.onReject) === 'function') {
- nextValue = handler.onReject(nextValue);
- nextStatus = STATUS_RESOLVED;
-
- if (handler.thisPromise._unhandledRejection) {
- this.removeUnhandeledRejection(handler.thisPromise);
- }
- }
- } catch (ex) {
- nextStatus = STATUS_REJECTED;
- nextValue = ex;
- }
-
- handler.nextPromise._updateStatus(nextStatus, nextValue);
- if (Date.now() >= timeoutAt) {
- break;
- }
- }
-
- if (this.handlers.length > 0) {
- setTimeout(this.runHandlers.bind(this), 0);
- return;
- }
-
- this.running = false;
- },
-
- addUnhandledRejection: function addUnhandledRejection(promise) {
- this.unhandledRejections.push({
- promise: promise,
- time: Date.now()
- });
- this.scheduleRejectionCheck();
- },
-
- removeUnhandeledRejection: function removeUnhandeledRejection(promise) {
- promise._unhandledRejection = false;
- for (var i = 0; i < this.unhandledRejections.length; i++) {
- if (this.unhandledRejections[i].promise === promise) {
- this.unhandledRejections.splice(i);
- i--;
- }
- }
- },
-
- scheduleRejectionCheck: function scheduleRejectionCheck() {
- if (this.pendingRejectionCheck) {
- return;
- }
- this.pendingRejectionCheck = true;
- setTimeout(function rejectionCheck() {
- this.pendingRejectionCheck = false;
- var now = Date.now();
- for (var i = 0; i < this.unhandledRejections.length; i++) {
- if (now - this.unhandledRejections[i].time > REJECTION_TIMEOUT) {
- var unhandled = this.unhandledRejections[i].promise._value;
- var msg = 'Unhandled rejection: ' + unhandled;
- if (unhandled.stack) {
- msg += '\n' + unhandled.stack;
- }
- warn(msg);
- this.unhandledRejections.splice(i);
- i--;
- }
- }
- if (this.unhandledRejections.length) {
- this.scheduleRejectionCheck();
- }
- }.bind(this), REJECTION_TIMEOUT);
- }
- };
-
- function Promise(resolver) {
- this._status = STATUS_PENDING;
- this._handlers = [];
- try {
- resolver.call(this, this._resolve.bind(this), this._reject.bind(this));
- } catch (e) {
- this._reject(e);
- }
- }
- /**
- * Builds a promise that is resolved when all the passed in promises are
- * resolved.
- * @param {array} array of data and/or promises to wait for.
- * @return {Promise} New dependant promise.
- */
- Promise.all = function Promise_all(promises) {
- var resolveAll, rejectAll;
- var deferred = new Promise(function (resolve, reject) {
- resolveAll = resolve;
- rejectAll = reject;
- });
- var unresolved = promises.length;
- var results = [];
- if (unresolved === 0) {
- resolveAll(results);
- return deferred;
- }
- function reject(reason) {
- if (deferred._status === STATUS_REJECTED) {
- return;
- }
- results = [];
- rejectAll(reason);
- }
- for (var i = 0, ii = promises.length; i < ii; ++i) {
- var promise = promises[i];
- var resolve = (function(i) {
- return function(value) {
- if (deferred._status === STATUS_REJECTED) {
- return;
- }
- results[i] = value;
- unresolved--;
- if (unresolved === 0) {
- resolveAll(results);
- }
- };
- })(i);
- if (Promise.isPromise(promise)) {
- promise.then(resolve, reject);
- } else {
- resolve(promise);
- }
- }
- return deferred;
- };
-
- /**
- * Checks if the value is likely a promise (has a 'then' function).
- * @return {boolean} true if value is thenable
- */
- Promise.isPromise = function Promise_isPromise(value) {
- return value && typeof value.then === 'function';
- };
-
- /**
- * Creates resolved promise
- * @param value resolve value
- * @returns {Promise}
- */
- Promise.resolve = function Promise_resolve(value) {
- return new Promise(function (resolve) { resolve(value); });
- };
-
- /**
- * Creates rejected promise
- * @param reason rejection value
- * @returns {Promise}
- */
- Promise.reject = function Promise_reject(reason) {
- return new Promise(function (resolve, reject) { reject(reason); });
- };
-
- Promise.prototype = {
- _status: null,
- _value: null,
- _handlers: null,
- _unhandledRejection: null,
-
- _updateStatus: function Promise__updateStatus(status, value) {
- if (this._status === STATUS_RESOLVED ||
- this._status === STATUS_REJECTED) {
- return;
- }
-
- if (status == STATUS_RESOLVED &&
- Promise.isPromise(value)) {
- value.then(this._updateStatus.bind(this, STATUS_RESOLVED),
- this._updateStatus.bind(this, STATUS_REJECTED));
- return;
- }
-
- this._status = status;
- this._value = value;
-
- if (status === STATUS_REJECTED && this._handlers.length === 0) {
- this._unhandledRejection = true;
- HandlerManager.addUnhandledRejection(this);
- }
-
- HandlerManager.scheduleHandlers(this);
- },
-
- _resolve: function Promise_resolve(value) {
- this._updateStatus(STATUS_RESOLVED, value);
- },
-
- _reject: function Promise_reject(reason) {
- this._updateStatus(STATUS_REJECTED, reason);
- },
-
- then: function Promise_then(onResolve, onReject) {
- var nextPromise = new Promise(function (resolve, reject) {
- this.resolve = reject;
- this.reject = reject;
- });
- this._handlers.push({
- thisPromise: this,
- onResolve: onResolve,
- onReject: onReject,
- nextPromise: nextPromise
- });
- HandlerManager.scheduleHandlers(this);
- return nextPromise;
- },
-
- catch: function Promise_catch(onReject) {
- return this.then(undefined, onReject);
- }
- };
-
- globalScope.Promise = Promise;
-})();
-
-var StatTimer = (function StatTimerClosure() {
- function rpad(str, pad, length) {
- while (str.length < length) {
- str += pad;
- }
- return str;
- }
- function StatTimer() {
- this.started = {};
- this.times = [];
- this.enabled = true;
- }
- StatTimer.prototype = {
- time: function StatTimer_time(name) {
- if (!this.enabled) {
- return;
- }
- if (name in this.started) {
- warn('Timer is already running for ' + name);
- }
- this.started[name] = Date.now();
- },
- timeEnd: function StatTimer_timeEnd(name) {
- if (!this.enabled) {
- return;
- }
- if (!(name in this.started)) {
- warn('Timer has not been started for ' + name);
- }
- this.times.push({
- 'name': name,
- 'start': this.started[name],
- 'end': Date.now()
- });
- // Remove timer from started so it can be called again.
- delete this.started[name];
- },
- toString: function StatTimer_toString() {
- var i, ii;
- var times = this.times;
- var out = '';
- // Find the longest name for padding purposes.
- var longest = 0;
- for (i = 0, ii = times.length; i < ii; ++i) {
- var name = times[i]['name'];
- if (name.length > longest) {
- longest = name.length;
- }
- }
- for (i = 0, ii = times.length; i < ii; ++i) {
- var span = times[i];
- var duration = span.end - span.start;
- out += rpad(span['name'], ' ', longest) + ' ' + duration + 'ms\n';
- }
- return out;
- }
- };
- return StatTimer;
-})();
-
-PDFJS.createBlob = function createBlob(data, contentType) {
- if (typeof Blob !== 'undefined') {
- return new Blob([data], { type: contentType });
- }
- // Blob builder is deprecated in FF14 and removed in FF18.
- var bb = new MozBlobBuilder();
- bb.append(data);
- return bb.getBlob(contentType);
-};
-
-PDFJS.createObjectURL = (function createObjectURLClosure() {
- // Blob/createObjectURL is not available, falling back to data schema.
- var digits =
- 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
-
- return function createObjectURL(data, contentType) {
- if (!PDFJS.disableCreateObjectURL &&
- typeof URL !== 'undefined' && URL.createObjectURL) {
- var blob = PDFJS.createBlob(data, contentType);
- return URL.createObjectURL(blob);
- }
-
- var buffer = 'data:' + contentType + ';base64,';
- for (var i = 0, ii = data.length; i < ii; i += 3) {
- var b1 = data[i] & 0xFF;
- var b2 = data[i + 1] & 0xFF;
- var b3 = data[i + 2] & 0xFF;
- var d1 = b1 >> 2, d2 = ((b1 & 3) << 4) | (b2 >> 4);
- var d3 = i + 1 < ii ? ((b2 & 0xF) << 2) | (b3 >> 6) : 64;
- var d4 = i + 2 < ii ? (b3 & 0x3F) : 64;
- buffer += digits[d1] + digits[d2] + digits[d3] + digits[d4];
- }
- return buffer;
- };
-})();
-
-function MessageHandler(name, comObj) {
- this.name = name;
- this.comObj = comObj;
- this.callbackIndex = 1;
- this.postMessageTransfers = true;
- var callbacksCapabilities = this.callbacksCapabilities = {};
- var ah = this.actionHandler = {};
-
- ah['console_log'] = [function ahConsoleLog(data) {
- console.log.apply(console, data);
- }];
- ah['console_error'] = [function ahConsoleError(data) {
- console.error.apply(console, data);
- }];
- ah['_unsupported_feature'] = [function ah_unsupportedFeature(data) {
- UnsupportedManager.notify(data);
- }];
-
- comObj.onmessage = function messageHandlerComObjOnMessage(event) {
- var data = event.data;
- if (data.isReply) {
- var callbackId = data.callbackId;
- if (data.callbackId in callbacksCapabilities) {
- var callback = callbacksCapabilities[callbackId];
- delete callbacksCapabilities[callbackId];
- if ('error' in data) {
- callback.reject(data.error);
- } else {
- callback.resolve(data.data);
- }
- } else {
- error('Cannot resolve callback ' + callbackId);
- }
- } else if (data.action in ah) {
- var action = ah[data.action];
- if (data.callbackId) {
- Promise.resolve().then(function () {
- return action[0].call(action[1], data.data);
- }).then(function (result) {
- comObj.postMessage({
- isReply: true,
- callbackId: data.callbackId,
- data: result
- });
- }, function (reason) {
- comObj.postMessage({
- isReply: true,
- callbackId: data.callbackId,
- error: reason
- });
- });
- } else {
- action[0].call(action[1], data.data);
- }
- } else {
- error('Unknown action from worker: ' + data.action);
- }
- };
-}
-
-MessageHandler.prototype = {
- on: function messageHandlerOn(actionName, handler, scope) {
- var ah = this.actionHandler;
- if (ah[actionName]) {
- error('There is already an actionName called "' + actionName + '"');
- }
- ah[actionName] = [handler, scope];
- },
- /**
- * Sends a message to the comObj to invoke the action with the supplied data.
- * @param {String} actionName Action to call.
- * @param {JSON} data JSON data to send.
- * @param {Array} [transfers] Optional list of transfers/ArrayBuffers
- */
- send: function messageHandlerSend(actionName, data, transfers) {
- var message = {
- action: actionName,
- data: data
- };
- this.postMessage(message, transfers);
- },
- /**
- * Sends a message to the comObj to invoke the action with the supplied data.
- * Expects that other side will callback with the response.
- * @param {String} actionName Action to call.
- * @param {JSON} data JSON data to send.
- * @param {Array} [transfers] Optional list of transfers/ArrayBuffers.
- * @returns {Promise} Promise to be resolved with response data.
- */
- sendWithPromise:
- function messageHandlerSendWithPromise(actionName, data, transfers) {
- var callbackId = this.callbackIndex++;
- var message = {
- action: actionName,
- data: data,
- callbackId: callbackId
- };
- var capability = createPromiseCapability();
- this.callbacksCapabilities[callbackId] = capability;
- try {
- this.postMessage(message, transfers);
- } catch (e) {
- capability.reject(e);
- }
- return capability.promise;
- },
- /**
- * Sends raw message to the comObj.
- * @private
- * @param message {Object} Raw message.
- * @param transfers List of transfers/ArrayBuffers, or undefined.
- */
- postMessage: function (message, transfers) {
- if (transfers && this.postMessageTransfers) {
- this.comObj.postMessage(message, transfers);
- } else {
- this.comObj.postMessage(message);
- }
- }
-};
-
-function loadJpegStream(id, imageUrl, objs) {
- var img = new Image();
- img.onload = (function loadJpegStream_onloadClosure() {
- objs.resolve(id, img);
- });
- img.src = imageUrl;
-}
-
-
-var DEFAULT_ICON_SIZE = 22; // px
-var HIGHLIGHT_OFFSET = 4; // px
-var SUPPORTED_TYPES = ['Link', 'Text', 'Widget'];
-
-var Annotation = (function AnnotationClosure() {
- // 12.5.5: Algorithm: Appearance streams
- function getTransformMatrix(rect, bbox, matrix) {
- var bounds = Util.getAxialAlignedBoundingBox(bbox, matrix);
- var minX = bounds[0];
- var minY = bounds[1];
- var maxX = bounds[2];
- var maxY = bounds[3];
-
- if (minX === maxX || minY === maxY) {
- // From real-life file, bbox was [0, 0, 0, 0]. In this case,
- // just apply the transform for rect
- return [1, 0, 0, 1, rect[0], rect[1]];
- }
-
- var xRatio = (rect[2] - rect[0]) / (maxX - minX);
- var yRatio = (rect[3] - rect[1]) / (maxY - minY);
- return [
- xRatio,
- 0,
- 0,
- yRatio,
- rect[0] - minX * xRatio,
- rect[1] - minY * yRatio
- ];
- }
-
- function getDefaultAppearance(dict) {
- var appearanceState = dict.get('AP');
- if (!isDict(appearanceState)) {
- return;
- }
-
- var appearance;
- var appearances = appearanceState.get('N');
- if (isDict(appearances)) {
- var as = dict.get('AS');
- if (as && appearances.has(as.name)) {
- appearance = appearances.get(as.name);
- }
- } else {
- appearance = appearances;
- }
- return appearance;
- }
-
- function Annotation(params) {
- if (params.data) {
- this.data = params.data;
- return;
- }
-
- var dict = params.dict;
- var data = this.data = {};
-
- data.subtype = dict.get('Subtype').name;
- var rect = dict.get('Rect') || [0, 0, 0, 0];
- data.rect = Util.normalizeRect(rect);
- data.annotationFlags = dict.get('F');
-
- var color = dict.get('C');
- if (isArray(color) && color.length === 3) {
- // TODO(mack): currently only supporting rgb; need support different
- // colorspaces
- data.color = color;
- } else {
- data.color = [0, 0, 0];
- }
-
- // Some types of annotations have border style dict which has more
- // info than the border array
- if (dict.has('BS')) {
- var borderStyle = dict.get('BS');
- data.borderWidth = borderStyle.has('W') ? borderStyle.get('W') : 1;
- } else {
- var borderArray = dict.get('Border') || [0, 0, 1];
- data.borderWidth = borderArray[2] || 0;
-
- // TODO: implement proper support for annotations with line dash patterns.
- var dashArray = borderArray[3];
- if (data.borderWidth > 0 && dashArray) {
- if (!isArray(dashArray)) {
- // Ignore the border if dashArray is not actually an array,
- // this is consistent with the behaviour in Adobe Reader.
- data.borderWidth = 0;
- } else {
- var dashArrayLength = dashArray.length;
- if (dashArrayLength > 0) {
- // According to the PDF specification: the elements in a dashArray
- // shall be numbers that are nonnegative and not all equal to zero.
- var isInvalid = false;
- var numPositive = 0;
- for (var i = 0; i < dashArrayLength; i++) {
- var validNumber = (+dashArray[i] >= 0);
- if (!validNumber) {
- isInvalid = true;
- break;
- } else if (dashArray[i] > 0) {
- numPositive++;
- }
- }
- if (isInvalid || numPositive === 0) {
- data.borderWidth = 0;
- }
- }
- }
- }
- }
-
- this.appearance = getDefaultAppearance(dict);
- data.hasAppearance = !!this.appearance;
- data.id = params.ref.num;
- }
-
- Annotation.prototype = {
-
- getData: function Annotation_getData() {
- return this.data;
- },
-
- hasHtml: function Annotation_hasHtml() {
- return false;
- },
-
- getHtmlElement: function Annotation_getHtmlElement(commonObjs) {
- throw new NotImplementedException(
- 'getHtmlElement() should be implemented in subclass');
- },
-
- // TODO(mack): Remove this, it's not really that helpful.
- getEmptyContainer: function Annotation_getEmptyContainer(tagName, rect,
- borderWidth) {
- assert(!isWorker,
- 'getEmptyContainer() should be called from main thread');
-
- var bWidth = borderWidth || 0;
-
- rect = rect || this.data.rect;
- var element = document.createElement(tagName);
- element.style.borderWidth = bWidth + 'px';
- var width = rect[2] - rect[0] - 2 * bWidth;
- var height = rect[3] - rect[1] - 2 * bWidth;
- element.style.width = width + 'px';
- element.style.height = height + 'px';
- return element;
- },
-
- isInvisible: function Annotation_isInvisible() {
- var data = this.data;
- if (data && SUPPORTED_TYPES.indexOf(data.subtype) !== -1) {
- return false;
- } else {
- return !!(data &&
- data.annotationFlags && // Default: not invisible
- data.annotationFlags & 0x1); // Invisible
- }
- },
-
- isViewable: function Annotation_isViewable() {
- var data = this.data;
- return !!(!this.isInvisible() &&
- data &&
- (!data.annotationFlags ||
- !(data.annotationFlags & 0x22)) && // Hidden or NoView
- data.rect); // rectangle is nessessary
- },
-
- isPrintable: function Annotation_isPrintable() {
- var data = this.data;
- return !!(!this.isInvisible() &&
- data &&
- data.annotationFlags && // Default: not printable
- data.annotationFlags & 0x4 && // Print
- data.rect); // rectangle is nessessary
- },
-
- loadResources: function Annotation_loadResources(keys) {
- return new Promise(function (resolve, reject) {
- this.appearance.dict.getAsync('Resources').then(function (resources) {
- if (!resources) {
- resolve();
- return;
- }
- var objectLoader = new ObjectLoader(resources.map,
- keys,
- resources.xref);
- objectLoader.load().then(function() {
- resolve(resources);
- }, reject);
- }, reject);
- }.bind(this));
- },
-
- getOperatorList: function Annotation_getOperatorList(evaluator) {
-
- if (!this.appearance) {
- return Promise.resolve(new OperatorList());
- }
-
- var data = this.data;
-
- var appearanceDict = this.appearance.dict;
- var resourcesPromise = this.loadResources([
- 'ExtGState',
- 'ColorSpace',
- 'Pattern',
- 'Shading',
- 'XObject',
- 'Font'
- // ProcSet
- // Properties
- ]);
- var bbox = appearanceDict.get('BBox') || [0, 0, 1, 1];
- var matrix = appearanceDict.get('Matrix') || [1, 0, 0, 1, 0 ,0];
- var transform = getTransformMatrix(data.rect, bbox, matrix);
- var self = this;
-
- return resourcesPromise.then(function(resources) {
- var opList = new OperatorList();
- opList.addOp(OPS.beginAnnotation, [data.rect, transform, matrix]);
- return evaluator.getOperatorList(self.appearance, resources, opList).
- then(function () {
- opList.addOp(OPS.endAnnotation, []);
- self.appearance.reset();
- return opList;
- });
- });
- }
- };
-
- Annotation.getConstructor =
- function Annotation_getConstructor(subtype, fieldType) {
-
- if (!subtype) {
- return;
- }
-
- // TODO(mack): Implement FreeText annotations
- if (subtype === 'Link') {
- return LinkAnnotation;
- } else if (subtype === 'Text') {
- return TextAnnotation;
- } else if (subtype === 'Widget') {
- if (!fieldType) {
- return;
- }
-
- if (fieldType === 'Tx') {
- return TextWidgetAnnotation;
- } else {
- return WidgetAnnotation;
- }
- } else {
- return Annotation;
- }
- };
-
- // TODO(mack): Support loading annotation from data
- Annotation.fromData = function Annotation_fromData(data) {
- var subtype = data.subtype;
- var fieldType = data.fieldType;
- var Constructor = Annotation.getConstructor(subtype, fieldType);
- if (Constructor) {
- return new Constructor({ data: data });
- }
- };
-
- Annotation.fromRef = function Annotation_fromRef(xref, ref) {
-
- var dict = xref.fetchIfRef(ref);
- if (!isDict(dict)) {
- return;
- }
-
- var subtype = dict.get('Subtype');
- subtype = isName(subtype) ? subtype.name : '';
- if (!subtype) {
- return;
- }
-
- var fieldType = Util.getInheritableProperty(dict, 'FT');
- fieldType = isName(fieldType) ? fieldType.name : '';
-
- var Constructor = Annotation.getConstructor(subtype, fieldType);
- if (!Constructor) {
- return;
- }
-
- var params = {
- dict: dict,
- ref: ref,
- };
-
- var annotation = new Constructor(params);
-
- if (annotation.isViewable() || annotation.isPrintable()) {
- return annotation;
- } else {
- warn('unimplemented annotation type: ' + subtype);
- }
- };
-
- Annotation.appendToOperatorList = function Annotation_appendToOperatorList(
- annotations, opList, pdfManager, partialEvaluator, intent) {
-
- function reject(e) {
- annotationsReadyCapability.reject(e);
- }
-
- var annotationsReadyCapability = createPromiseCapability();
-
- var annotationPromises = [];
- for (var i = 0, n = annotations.length; i < n; ++i) {
- if (intent === 'display' && annotations[i].isViewable() ||
- intent === 'print' && annotations[i].isPrintable()) {
- annotationPromises.push(
- annotations[i].getOperatorList(partialEvaluator));
- }
- }
- Promise.all(annotationPromises).then(function(datas) {
- opList.addOp(OPS.beginAnnotations, []);
- for (var i = 0, n = datas.length; i < n; ++i) {
- var annotOpList = datas[i];
- opList.addOpList(annotOpList);
- }
- opList.addOp(OPS.endAnnotations, []);
- annotationsReadyCapability.resolve();
- }, reject);
-
- return annotationsReadyCapability.promise;
- };
-
- return Annotation;
-})();
-PDFJS.Annotation = Annotation;
-
-
-var WidgetAnnotation = (function WidgetAnnotationClosure() {
-
- function WidgetAnnotation(params) {
- Annotation.call(this, params);
-
- if (params.data) {
- return;
- }
-
- var dict = params.dict;
- var data = this.data;
-
- data.fieldValue = stringToPDFString(
- Util.getInheritableProperty(dict, 'V') || '');
- data.alternativeText = stringToPDFString(dict.get('TU') || '');
- data.defaultAppearance = Util.getInheritableProperty(dict, 'DA') || '';
- var fieldType = Util.getInheritableProperty(dict, 'FT');
- data.fieldType = isName(fieldType) ? fieldType.name : '';
- data.fieldFlags = Util.getInheritableProperty(dict, 'Ff') || 0;
- this.fieldResources = Util.getInheritableProperty(dict, 'DR') || Dict.empty;
-
- // Building the full field name by collecting the field and
- // its ancestors 'T' data and joining them using '.'.
- var fieldName = [];
- var namedItem = dict;
- var ref = params.ref;
- while (namedItem) {
- var parent = namedItem.get('Parent');
- var parentRef = namedItem.getRaw('Parent');
- var name = namedItem.get('T');
- if (name) {
- fieldName.unshift(stringToPDFString(name));
- } else {
- // The field name is absent, that means more than one field
- // with the same name may exist. Replacing the empty name
- // with the '`' plus index in the parent's 'Kids' array.
- // This is not in the PDF spec but necessary to id the
- // the input controls.
- var kids = parent.get('Kids');
- var j, jj;
- for (j = 0, jj = kids.length; j < jj; j++) {
- var kidRef = kids[j];
- if (kidRef.num == ref.num && kidRef.gen == ref.gen) {
- break;
- }
- }
- fieldName.unshift('`' + j);
- }
- namedItem = parent;
- ref = parentRef;
- }
- data.fullName = fieldName.join('.');
- }
-
- var parent = Annotation.prototype;
- Util.inherit(WidgetAnnotation, Annotation, {
- isViewable: function WidgetAnnotation_isViewable() {
- if (this.data.fieldType === 'Sig') {
- warn('unimplemented annotation type: Widget signature');
- return false;
- }
-
- return parent.isViewable.call(this);
- }
- });
-
- return WidgetAnnotation;
-})();
-
-var TextWidgetAnnotation = (function TextWidgetAnnotationClosure() {
- function TextWidgetAnnotation(params) {
- WidgetAnnotation.call(this, params);
-
- if (params.data) {
- return;
- }
-
- this.data.textAlignment = Util.getInheritableProperty(params.dict, 'Q');
- }
-
- // TODO(mack): This dupes some of the logic in CanvasGraphics.setFont()
- function setTextStyles(element, item, fontObj) {
-
- var style = element.style;
- style.fontSize = item.fontSize + 'px';
- style.direction = item.fontDirection < 0 ? 'rtl': 'ltr';
-
- if (!fontObj) {
- return;
- }
-
- style.fontWeight = fontObj.black ?
- (fontObj.bold ? 'bolder' : 'bold') :
- (fontObj.bold ? 'bold' : 'normal');
- style.fontStyle = fontObj.italic ? 'italic' : 'normal';
-
- var fontName = fontObj.loadedName;
- var fontFamily = fontName ? '"' + fontName + '", ' : '';
- // Use a reasonable default font if the font doesn't specify a fallback
- var fallbackName = fontObj.fallbackName || 'Helvetica, sans-serif';
- style.fontFamily = fontFamily + fallbackName;
- }
-
-
- Util.inherit(TextWidgetAnnotation, WidgetAnnotation, {
- hasHtml: function TextWidgetAnnotation_hasHtml() {
- return !this.data.hasAppearance && !!this.data.fieldValue;
- },
-
- getHtmlElement: function TextWidgetAnnotation_getHtmlElement(commonObjs) {
- assert(!isWorker, 'getHtmlElement() shall be called from main thread');
-
- var item = this.data;
-
- var element = this.getEmptyContainer('div');
- element.style.display = 'table';
-
- var content = document.createElement('div');
- content.textContent = item.fieldValue;
- var textAlignment = item.textAlignment;
- content.style.textAlign = ['left', 'center', 'right'][textAlignment];
- content.style.verticalAlign = 'middle';
- content.style.display = 'table-cell';
-
- var fontObj = item.fontRefName ?
- commonObjs.getData(item.fontRefName) : null;
- setTextStyles(content, item, fontObj);
-
- element.appendChild(content);
-
- return element;
- },
-
- getOperatorList: function TextWidgetAnnotation_getOperatorList(evaluator) {
- if (this.appearance) {
- return Annotation.prototype.getOperatorList.call(this, evaluator);
- }
-
- var opList = new OperatorList();
- var data = this.data;
-
- // Even if there is an appearance stream, ignore it. This is the
- // behaviour used by Adobe Reader.
- if (!data.defaultAppearance) {
- return Promise.resolve(opList);
- }
-
- var stream = new Stream(stringToBytes(data.defaultAppearance));
- return evaluator.getOperatorList(stream, this.fieldResources, opList).
- then(function () {
- return opList;
- });
- }
- });
-
- return TextWidgetAnnotation;
-})();
-
-var InteractiveAnnotation = (function InteractiveAnnotationClosure() {
- function InteractiveAnnotation(params) {
- Annotation.call(this, params);
- }
-
- Util.inherit(InteractiveAnnotation, Annotation, {
- hasHtml: function InteractiveAnnotation_hasHtml() {
- return true;
- },
-
- highlight: function InteractiveAnnotation_highlight() {
- if (this.highlightElement &&
- this.highlightElement.hasAttribute('hidden')) {
- this.highlightElement.removeAttribute('hidden');
- }
- },
-
- unhighlight: function InteractiveAnnotation_unhighlight() {
- if (this.highlightElement &&
- !this.highlightElement.hasAttribute('hidden')) {
- this.highlightElement.setAttribute('hidden', true);
- }
- },
-
- initContainer: function InteractiveAnnotation_initContainer() {
-
- var item = this.data;
- var rect = item.rect;
-
- var container = this.getEmptyContainer('section', rect, item.borderWidth);
- container.style.backgroundColor = item.color;
-
- var color = item.color;
- var rgb = [];
- for (var i = 0; i < 3; ++i) {
- rgb[i] = Math.round(color[i] * 255);
- }
- item.colorCssRgb = Util.makeCssRgb(rgb);
-
- var highlight = document.createElement('div');
- highlight.className = 'annotationHighlight';
- highlight.style.left = highlight.style.top = -HIGHLIGHT_OFFSET + 'px';
- highlight.style.right = highlight.style.bottom = -HIGHLIGHT_OFFSET + 'px';
- highlight.setAttribute('hidden', true);
-
- this.highlightElement = highlight;
- container.appendChild(this.highlightElement);
-
- return container;
- }
- });
-
- return InteractiveAnnotation;
-})();
-
-var TextAnnotation = (function TextAnnotationClosure() {
- function TextAnnotation(params) {
- InteractiveAnnotation.call(this, params);
-
- if (params.data) {
- return;
- }
-
- var dict = params.dict;
- var data = this.data;
-
- var content = dict.get('Contents');
- var title = dict.get('T');
- data.content = stringToPDFString(content || '');
- data.title = stringToPDFString(title || '');
-
- if (data.hasAppearance) {
- data.name = 'NoIcon';
- } else {
- data.rect[1] = data.rect[3] - DEFAULT_ICON_SIZE;
- data.rect[2] = data.rect[0] + DEFAULT_ICON_SIZE;
- data.name = dict.has('Name') ? dict.get('Name').name : 'Note';
- }
-
- if (dict.has('C')) {
- data.hasBgColor = true;
- }
- }
-
- var ANNOT_MIN_SIZE = 10;
-
- Util.inherit(TextAnnotation, InteractiveAnnotation, {
-
- getHtmlElement: function TextAnnotation_getHtmlElement(commonObjs) {
- assert(!isWorker, 'getHtmlElement() shall be called from main thread');
-
- var item = this.data;
- var rect = item.rect;
-
- // sanity check because of OOo-generated PDFs
- if ((rect[3] - rect[1]) < ANNOT_MIN_SIZE) {
- rect[3] = rect[1] + ANNOT_MIN_SIZE;
- }
- if ((rect[2] - rect[0]) < ANNOT_MIN_SIZE) {
- rect[2] = rect[0] + (rect[3] - rect[1]); // make it square
- }
-
- var container = this.initContainer();
- container.className = 'annotText';
-
- var image = document.createElement('img');
- image.style.height = container.style.height;
- image.style.width = container.style.width;
- var iconName = item.name;
- image.src = PDFJS.imageResourcesPath + 'annotation-' +
- iconName.toLowerCase() + '.svg';
- image.alt = '[{{type}} Annotation]';
- image.dataset.l10nId = 'text_annotation_type';
- image.dataset.l10nArgs = JSON.stringify({type: iconName});
-
- var contentWrapper = document.createElement('div');
- contentWrapper.className = 'annotTextContentWrapper';
- contentWrapper.style.left = Math.floor(rect[2] - rect[0] + 5) + 'px';
- contentWrapper.style.top = '-10px';
-
- var content = document.createElement('div');
- content.className = 'annotTextContent';
- content.setAttribute('hidden', true);
-
- var i, ii;
- if (item.hasBgColor) {
- var color = item.color;
- var rgb = [];
- for (i = 0; i < 3; ++i) {
- // Enlighten the color (70%)
- var c = Math.round(color[i] * 255);
- rgb[i] = Math.round((255 - c) * 0.7) + c;
- }
- content.style.backgroundColor = Util.makeCssRgb(rgb);
- }
-
- var title = document.createElement('h1');
- var text = document.createElement('p');
- title.textContent = item.title;
-
- if (!item.content && !item.title) {
- content.setAttribute('hidden', true);
- } else {
- var e = document.createElement('span');
- var lines = item.content.split(/(?:\r\n?|\n)/);
- for (i = 0, ii = lines.length; i < ii; ++i) {
- var line = lines[i];
- e.appendChild(document.createTextNode(line));
- if (i < (ii - 1)) {
- e.appendChild(document.createElement('br'));
- }
- }
- text.appendChild(e);
-
- var pinned = false;
-
- var showAnnotation = function showAnnotation(pin) {
- if (pin) {
- pinned = true;
- }
- if (content.hasAttribute('hidden')) {
- container.style.zIndex += 1;
- content.removeAttribute('hidden');
- }
- };
-
- var hideAnnotation = function hideAnnotation(unpin) {
- if (unpin) {
- pinned = false;
- }
- if (!content.hasAttribute('hidden') && !pinned) {
- container.style.zIndex -= 1;
- content.setAttribute('hidden', true);
- }
- };
-
- var toggleAnnotation = function toggleAnnotation() {
- if (pinned) {
- hideAnnotation(true);
- } else {
- showAnnotation(true);
- }
- };
-
- image.addEventListener('click', function image_clickHandler() {
- toggleAnnotation();
- }, false);
- image.addEventListener('mouseover', function image_mouseOverHandler() {
- showAnnotation();
- }, false);
- image.addEventListener('mouseout', function image_mouseOutHandler() {
- hideAnnotation();
- }, false);
-
- content.addEventListener('click', function content_clickHandler() {
- hideAnnotation(true);
- }, false);
- }
-
- content.appendChild(title);
- content.appendChild(text);
- contentWrapper.appendChild(content);
- container.appendChild(image);
- container.appendChild(contentWrapper);
-
- return container;
- }
- });
-
- return TextAnnotation;
-})();
-
-var LinkAnnotation = (function LinkAnnotationClosure() {
- function LinkAnnotation(params) {
- InteractiveAnnotation.call(this, params);
-
- if (params.data) {
- return;
- }
-
- var dict = params.dict;
- var data = this.data;
-
- var action = dict.get('A');
- if (action) {
- var linkType = action.get('S').name;
- if (linkType === 'URI') {
- var url = action.get('URI');
- if (isName(url)) {
- // Some bad PDFs do not put parentheses around relative URLs.
- url = '/' + url.name;
- } else if (url) {
- url = addDefaultProtocolToUrl(url);
- }
- // TODO: pdf spec mentions urls can be relative to a Base
- // entry in the dictionary.
- if (!isValidUrl(url, false)) {
- url = '';
- }
- data.url = url;
- } else if (linkType === 'GoTo') {
- data.dest = action.get('D');
- } else if (linkType === 'GoToR') {
- var urlDict = action.get('F');
- if (isDict(urlDict)) {
- // We assume that the 'url' is a Filspec dictionary
- // and fetch the url without checking any further
- url = urlDict.get('F') || '';
- }
-
- // TODO: pdf reference says that GoToR
- // can also have 'NewWindow' attribute
- if (!isValidUrl(url, false)) {
- url = '';
- }
- data.url = url;
- data.dest = action.get('D');
- } else if (linkType === 'Named') {
- data.action = action.get('N').name;
- } else {
- warn('unrecognized link type: ' + linkType);
- }
- } else if (dict.has('Dest')) {
- // simple destination link
- var dest = dict.get('Dest');
- data.dest = isName(dest) ? dest.name : dest;
- }
- }
-
- // Lets URLs beginning with 'www.' default to using the 'http://' protocol.
- function addDefaultProtocolToUrl(url) {
- if (url && url.indexOf('www.') === 0) {
- return ('http://' + url);
- }
- return url;
- }
-
- Util.inherit(LinkAnnotation, InteractiveAnnotation, {
- hasOperatorList: function LinkAnnotation_hasOperatorList() {
- return false;
- },
-
- getHtmlElement: function LinkAnnotation_getHtmlElement(commonObjs) {
-
- var container = this.initContainer();
- container.className = 'annotLink';
-
- var item = this.data;
-
- container.style.borderColor = item.colorCssRgb;
- container.style.borderStyle = 'solid';
-
- var link = document.createElement('a');
- link.href = link.title = this.data.url || '';
-
- container.appendChild(link);
-
- return container;
- }
- });
-
- return LinkAnnotation;
-})();
-
-
-/**
- * The maximum allowed image size in total pixels e.g. width * height. Images
- * above this value will not be drawn. Use -1 for no limit.
- * @var {number}
- */
-PDFJS.maxImageSize = (PDFJS.maxImageSize === undefined ?
- -1 : PDFJS.maxImageSize);
-
-/**
- * The url of where the predefined Adobe CMaps are located. Include trailing
- * slash.
- * @var {string}
- */
-PDFJS.cMapUrl = (PDFJS.cMapUrl === undefined ? null : PDFJS.cMapUrl);
-
-/**
- * Specifies if CMaps are binary packed.
- * @var {boolean}
- */
-PDFJS.cMapPacked = PDFJS.cMapPacked === undefined ? false : PDFJS.cMapPacked;
-
-/*
- * By default fonts are converted to OpenType fonts and loaded via font face
- * rules. If disabled, the font will be rendered using a built in font renderer
- * that constructs the glyphs with primitive path commands.
- * @var {boolean}
- */
-PDFJS.disableFontFace = (PDFJS.disableFontFace === undefined ?
- false : PDFJS.disableFontFace);
-
-/**
- * Path for image resources, mainly for annotation icons. Include trailing
- * slash.
- * @var {string}
- */
-PDFJS.imageResourcesPath = (PDFJS.imageResourcesPath === undefined ?
- '' : PDFJS.imageResourcesPath);
-
-/**
- * Disable the web worker and run all code on the main thread. This will happen
- * automatically if the browser doesn't support workers or sending typed arrays
- * to workers.
- * @var {boolean}
- */
-PDFJS.disableWorker = (PDFJS.disableWorker === undefined ?
- false : PDFJS.disableWorker);
-
-/**
- * Path and filename of the worker file. Required when the worker is enabled in
- * development mode. If unspecified in the production build, the worker will be
- * loaded based on the location of the pdf.js file.
- * @var {string}
- */
-PDFJS.workerSrc = (PDFJS.workerSrc === undefined ? null : PDFJS.workerSrc);
-
-/**
- * Disable range request loading of PDF files. When enabled and if the server
- * supports partial content requests then the PDF will be fetched in chunks.
- * Enabled (false) by default.
- * @var {boolean}
- */
-PDFJS.disableRange = (PDFJS.disableRange === undefined ?
- false : PDFJS.disableRange);
-
-/**
- * Disable pre-fetching of PDF file data. When range requests are enabled PDF.js
- * will automatically keep fetching more data even if it isn't needed to display
- * the current page. This default behavior can be disabled.
- * @var {boolean}
- */
-PDFJS.disableAutoFetch = (PDFJS.disableAutoFetch === undefined ?
- false : PDFJS.disableAutoFetch);
-
-/**
- * Enables special hooks for debugging PDF.js.
- * @var {boolean}
- */
-PDFJS.pdfBug = (PDFJS.pdfBug === undefined ? false : PDFJS.pdfBug);
-
-/**
- * Enables transfer usage in postMessage for ArrayBuffers.
- * @var {boolean}
- */
-PDFJS.postMessageTransfers = (PDFJS.postMessageTransfers === undefined ?
- true : PDFJS.postMessageTransfers);
-
-/**
- * Disables URL.createObjectURL usage.
- * @var {boolean}
- */
-PDFJS.disableCreateObjectURL = (PDFJS.disableCreateObjectURL === undefined ?
- false : PDFJS.disableCreateObjectURL);
-
-/**
- * Disables WebGL usage.
- * @var {boolean}
- */
-PDFJS.disableWebGL = (PDFJS.disableWebGL === undefined ?
- true : PDFJS.disableWebGL);
-
-/**
- * Controls the logging level.
- * The constants from PDFJS.VERBOSITY_LEVELS should be used:
- * - errors
- * - warnings [default]
- * - infos
- * @var {number}
- */
-PDFJS.verbosity = (PDFJS.verbosity === undefined ?
- PDFJS.VERBOSITY_LEVELS.warnings : PDFJS.verbosity);
-
-/**
- * Document initialization / loading parameters object.
- *
- * @typedef {Object} DocumentInitParameters
- * @property {string} url - The URL of the PDF.
- * @property {TypedArray} data - A typed array with PDF data.
- * @property {Object} httpHeaders - Basic authentication headers.
- * @property {boolean} withCredentials - Indicates whether or not cross-site
- * Access-Control requests should be made using credentials such as cookies
- * or authorization headers. The default is false.
- * @property {string} password - For decrypting password-protected PDFs.
- * @property {TypedArray} initialData - A typed array with the first portion or
- * all of the pdf data. Used by the extension since some data is already
- * loaded before the switch to range requests.
- */
-
-/**
- * This is the main entry point for loading a PDF and interacting with it.
- * NOTE: If a URL is used to fetch the PDF data a standard XMLHttpRequest(XHR)
- * is used, which means it must follow the same origin rules that any XHR does
- * e.g. No cross domain requests without CORS.
- *
- * @param {string|TypedArray|DocumentInitParameters} source Can be a url to
- * where a PDF is located, a typed array (Uint8Array) already populated with
- * data or parameter object.
- *
- * @param {Object} pdfDataRangeTransport is optional. It is used if you want
- * to manually serve range requests for data in the PDF. See viewer.js for
- * an example of pdfDataRangeTransport's interface.
- *
- * @param {function} passwordCallback is optional. It is used to request a
- * password if wrong or no password was provided. The callback receives two
- * parameters: function that needs to be called with new password and reason
- * (see {PasswordResponses}).
- *
- * @return {Promise} A promise that is resolved with {@link PDFDocumentProxy}
- * object.
- */
-PDFJS.getDocument = function getDocument(source,
- pdfDataRangeTransport,
- passwordCallback,
- progressCallback) {
- var workerInitializedCapability, workerReadyCapability, transport;
-
- if (typeof source === 'string') {
- source = { url: source };
- } else if (isArrayBuffer(source)) {
- source = { data: source };
- } else if (typeof source !== 'object') {
- error('Invalid parameter in getDocument, need either Uint8Array, ' +
- 'string or a parameter object');
- }
-
- if (!source.url && !source.data) {
- error('Invalid parameter array, need either .data or .url');
- }
-
- // copy/use all keys as is except 'url' -- full path is required
- var params = {};
- for (var key in source) {
- if (key === 'url' && typeof window !== 'undefined') {
- params[key] = combineUrl(window.location.href, source[key]);
- continue;
- }
- params[key] = source[key];
- }
-
- workerInitializedCapability = createPromiseCapability();
- workerReadyCapability = createPromiseCapability();
- transport = new WorkerTransport(workerInitializedCapability,
- workerReadyCapability, pdfDataRangeTransport,
- progressCallback);
- workerInitializedCapability.promise.then(function transportInitialized() {
- transport.passwordCallback = passwordCallback;
- transport.fetchDocument(params);
- });
- return workerReadyCapability.promise;
-};
-
-/**
- * Proxy to a PDFDocument in the worker thread. Also, contains commonly used
- * properties that can be read synchronously.
- * @class
- */
-var PDFDocumentProxy = (function PDFDocumentProxyClosure() {
- function PDFDocumentProxy(pdfInfo, transport) {
- this.pdfInfo = pdfInfo;
- this.transport = transport;
- }
- PDFDocumentProxy.prototype = /** @lends PDFDocumentProxy.prototype */ {
- /**
- * @return {number} Total number of pages the PDF contains.
- */
- get numPages() {
- return this.pdfInfo.numPages;
- },
- /**
- * @return {string} A unique ID to identify a PDF. Not guaranteed to be
- * unique.
- */
- get fingerprint() {
- return this.pdfInfo.fingerprint;
- },
- /**
- * @param {number} pageNumber The page number to get. The first page is 1.
- * @return {Promise} A promise that is resolved with a {@link PDFPageProxy}
- * object.
- */
- getPage: function PDFDocumentProxy_getPage(pageNumber) {
- return this.transport.getPage(pageNumber);
- },
- /**
- * @param {{num: number, gen: number}} ref The page reference. Must have
- * the 'num' and 'gen' properties.
- * @return {Promise} A promise that is resolved with the page index that is
- * associated with the reference.
- */
- getPageIndex: function PDFDocumentProxy_getPageIndex(ref) {
- return this.transport.getPageIndex(ref);
- },
- /**
- * @return {Promise} A promise that is resolved with a lookup table for
- * mapping named destinations to reference numbers.
- */
- getDestinations: function PDFDocumentProxy_getDestinations() {
- return this.transport.getDestinations();
- },
- /**
- * @return {Promise} A promise that is resolved with a lookup table for
- * mapping named attachments to their content.
- */
- getAttachments: function PDFDocumentProxy_getAttachments() {
- return this.transport.getAttachments();
- },
- /**
- * @return {Promise} A promise that is resolved with an array of all the
- * JavaScript strings in the name tree.
- */
- getJavaScript: function PDFDocumentProxy_getJavaScript() {
- return this.transport.getJavaScript();
- },
- /**
- * @return {Promise} A promise that is resolved with an {Array} that is a
- * tree outline (if it has one) of the PDF. The tree is in the format of:
- * [
- * {
- * title: string,
- * bold: boolean,
- * italic: boolean,
- * color: rgb array,
- * dest: dest obj,
- * items: array of more items like this
- * },
- * ...
- * ].
- */
- getOutline: function PDFDocumentProxy_getOutline() {
- return this.transport.getOutline();
- },
- /**
- * @return {Promise} A promise that is resolved with an {Object} that has
- * info and metadata properties. Info is an {Object} filled with anything
- * available in the information dictionary and similarly metadata is a
- * {Metadata} object with information from the metadata section of the PDF.
- */
- getMetadata: function PDFDocumentProxy_getMetadata() {
- return this.transport.getMetadata();
- },
- /**
- * @return {Promise} A promise that is resolved with a TypedArray that has
- * the raw data from the PDF.
- */
- getData: function PDFDocumentProxy_getData() {
- return this.transport.getData();
- },
- /**
- * @return {Promise} A promise that is resolved when the document's data
- * is loaded. It is resolved with an {Object} that contains the length
- * property that indicates size of the PDF data in bytes.
- */
- getDownloadInfo: function PDFDocumentProxy_getDownloadInfo() {
- return this.transport.downloadInfoCapability.promise;
- },
- /**
- * Cleans up resources allocated by the document, e.g. created @font-face.
- */
- cleanup: function PDFDocumentProxy_cleanup() {
- this.transport.startCleanup();
- },
- /**
- * Destroys current document instance and terminates worker.
- */
- destroy: function PDFDocumentProxy_destroy() {
- this.transport.destroy();
- }
- };
- return PDFDocumentProxy;
-})();
-
-/**
- * Page text content.
- *
- * @typedef {Object} TextContent
- * @property {array} items - array of {@link TextItem}
- * @property {Object} styles - {@link TextStyles} objects, indexed by font
- * name.
- */
-
-/**
- * Page text content part.
- *
- * @typedef {Object} TextItem
- * @property {string} str - text content.
- * @property {string} dir - text direction: 'ttb', 'ltr' or 'rtl'.
- * @property {array} transform - transformation matrix.
- * @property {number} width - width in device space.
- * @property {number} height - height in device space.
- * @property {string} fontName - font name used by pdf.js for converted font.
- */
-
-/**
- * Text style.
- *
- * @typedef {Object} TextStyle
- * @property {number} ascent - font ascent.
- * @property {number} descent - font descent.
- * @property {boolean} vertical - text is in vertical mode.
- * @property {string} fontFamily - possible font family
- */
-
-/**
- * Page render parameters.
- *
- * @typedef {Object} RenderParameters
- * @property {Object} canvasContext - A 2D context of a DOM Canvas object.
- * @property {PDFJS.PageViewport} viewport - Rendering viewport obtained by
- * calling of PDFPage.getViewport method.
- * @property {string} intent - Rendering intent, can be 'display' or 'print'
- * (default value is 'display').
- * @property {Object} imageLayer - (optional) An object that has beginLayout,
- * endLayout and appendImage functions.
- * @property {function} continueCallback - (optional) A function that will be
- * called each time the rendering is paused. To continue
- * rendering call the function that is the first argument
- * to the callback.
- */
-
-/**
- * Proxy to a PDFPage in the worker thread.
- * @class
- */
-var PDFPageProxy = (function PDFPageProxyClosure() {
- function PDFPageProxy(pageIndex, pageInfo, transport) {
- this.pageIndex = pageIndex;
- this.pageInfo = pageInfo;
- this.transport = transport;
- this.stats = new StatTimer();
- this.stats.enabled = !!globalScope.PDFJS.enableStats;
- this.commonObjs = transport.commonObjs;
- this.objs = new PDFObjects();
- this.cleanupAfterRender = false;
- this.pendingDestroy = false;
- this.intentStates = {};
- }
- PDFPageProxy.prototype = /** @lends PDFPageProxy.prototype */ {
- /**
- * @return {number} Page number of the page. First page is 1.
- */
- get pageNumber() {
- return this.pageIndex + 1;
- },
- /**
- * @return {number} The number of degrees the page is rotated clockwise.
- */
- get rotate() {
- return this.pageInfo.rotate;
- },
- /**
- * @return {Object} The reference that points to this page. It has 'num' and
- * 'gen' properties.
- */
- get ref() {
- return this.pageInfo.ref;
- },
- /**
- * @return {Array} An array of the visible portion of the PDF page in the
- * user space units - [x1, y1, x2, y2].
- */
- get view() {
- return this.pageInfo.view;
- },
- /**
- * @param {number} scale The desired scale of the viewport.
- * @param {number} rotate Degrees to rotate the viewport. If omitted this
- * defaults to the page rotation.
- * @return {PDFJS.PageViewport} Contains 'width' and 'height' properties
- * along with transforms required for rendering.
- */
- getViewport: function PDFPageProxy_getViewport(scale, rotate) {
- if (arguments.length < 2) {
- rotate = this.rotate;
- }
- return new PDFJS.PageViewport(this.view, scale, rotate, 0, 0);
- },
- /**
- * @return {Promise} A promise that is resolved with an {Array} of the
- * annotation objects.
- */
- getAnnotations: function PDFPageProxy_getAnnotations() {
- if (this.annotationsPromise) {
- return this.annotationsPromise;
- }
-
- var promise = this.transport.getAnnotations(this.pageIndex);
- this.annotationsPromise = promise;
- return promise;
- },
- /**
- * Begins the process of rendering a page to the desired context.
- * @param {RenderParameters} params Page render parameters.
- * @return {RenderTask} An object that contains the promise, which
- * is resolved when the page finishes rendering.
- */
- render: function PDFPageProxy_render(params) {
- var stats = this.stats;
- stats.time('Overall');
-
- // If there was a pending destroy cancel it so no cleanup happens during
- // this call to render.
- this.pendingDestroy = false;
-
- var renderingIntent = ('intent' in params ?
- (params.intent == 'print' ? 'print' : 'display') : 'display');
-
- if (!this.intentStates[renderingIntent]) {
- this.intentStates[renderingIntent] = {};
- }
- var intentState = this.intentStates[renderingIntent];
-
- // If there's no displayReadyCapability yet, then the operatorList
- // was never requested before. Make the request and create the promise.
- if (!intentState.displayReadyCapability) {
- intentState.receivingOperatorList = true;
- intentState.displayReadyCapability = createPromiseCapability();
- intentState.operatorList = {
- fnArray: [],
- argsArray: [],
- lastChunk: false
- };
-
- this.stats.time('Page Request');
- this.transport.messageHandler.send('RenderPageRequest', {
- pageIndex: this.pageNumber - 1,
- intent: renderingIntent
- });
- }
-
- var internalRenderTask = new InternalRenderTask(complete, params,
- this.objs,
- this.commonObjs,
- intentState.operatorList,
- this.pageNumber);
- if (!intentState.renderTasks) {
- intentState.renderTasks = [];
- }
- intentState.renderTasks.push(internalRenderTask);
- var renderTask = new RenderTask(internalRenderTask);
-
- var self = this;
- intentState.displayReadyCapability.promise.then(
- function pageDisplayReadyPromise(transparency) {
- if (self.pendingDestroy) {
- complete();
- return;
- }
- stats.time('Rendering');
- internalRenderTask.initalizeGraphics(transparency);
- internalRenderTask.operatorListChanged();
- },
- function pageDisplayReadPromiseError(reason) {
- complete(reason);
- }
- );
-
- function complete(error) {
- var i = intentState.renderTasks.indexOf(internalRenderTask);
- if (i >= 0) {
- intentState.renderTasks.splice(i, 1);
- }
-
- if (self.cleanupAfterRender) {
- self.pendingDestroy = true;
- }
- self._tryDestroy();
-
- if (error) {
- internalRenderTask.capability.reject(error);
- } else {
- internalRenderTask.capability.resolve();
- }
- stats.timeEnd('Rendering');
- stats.timeEnd('Overall');
- }
-
- return renderTask;
- },
- /**
- * @return {Promise} That is resolved a {@link TextContent}
- * object that represent the page text content.
- */
- getTextContent: function PDFPageProxy_getTextContent() {
- return this.transport.messageHandler.sendWithPromise('GetTextContent', {
- pageIndex: this.pageNumber - 1
- });
- },
- /**
- * Destroys resources allocated by the page.
- */
- destroy: function PDFPageProxy_destroy() {
- this.pendingDestroy = true;
- this._tryDestroy();
- },
- /**
- * For internal use only. Attempts to clean up if rendering is in a state
- * where that's possible.
- * @ignore
- */
- _tryDestroy: function PDFPageProxy__destroy() {
- if (!this.pendingDestroy ||
- Object.keys(this.intentStates).some(function(intent) {
- var intentState = this.intentStates[intent];
- return (intentState.renderTasks.length !== 0 ||
- intentState.receivingOperatorList);
- }, this)) {
- return;
- }
-
- Object.keys(this.intentStates).forEach(function(intent) {
- delete this.intentStates[intent];
- }, this);
- this.objs.clear();
- this.annotationsPromise = null;
- this.pendingDestroy = false;
- },
- /**
- * For internal use only.
- * @ignore
- */
- _startRenderPage: function PDFPageProxy_startRenderPage(transparency,
- intent) {
- var intentState = this.intentStates[intent];
- intentState.displayReadyCapability.resolve(transparency);
- },
- /**
- * For internal use only.
- * @ignore
- */
- _renderPageChunk: function PDFPageProxy_renderPageChunk(operatorListChunk,
- intent) {
- var intentState = this.intentStates[intent];
- var i, ii;
- // Add the new chunk to the current operator list.
- for (i = 0, ii = operatorListChunk.length; i < ii; i++) {
- intentState.operatorList.fnArray.push(operatorListChunk.fnArray[i]);
- intentState.operatorList.argsArray.push(
- operatorListChunk.argsArray[i]);
- }
- intentState.operatorList.lastChunk = operatorListChunk.lastChunk;
-
- // Notify all the rendering tasks there are more operators to be consumed.
- for (i = 0; i < intentState.renderTasks.length; i++) {
- intentState.renderTasks[i].operatorListChanged();
- }
-
- if (operatorListChunk.lastChunk) {
- intentState.receivingOperatorList = false;
- this._tryDestroy();
- }
- }
- };
- return PDFPageProxy;
-})();
-
-/**
- * For internal use only.
- * @ignore
- */
-var WorkerTransport = (function WorkerTransportClosure() {
- function WorkerTransport(workerInitializedCapability, workerReadyCapability,
- pdfDataRangeTransport, progressCallback) {
- this.pdfDataRangeTransport = pdfDataRangeTransport;
-
- this.workerReadyCapability = workerReadyCapability;
- this.progressCallback = progressCallback;
- this.commonObjs = new PDFObjects();
-
- this.pageCache = [];
- this.pagePromises = [];
- this.downloadInfoCapability = createPromiseCapability();
- this.passwordCallback = null;
-
- // If worker support isn't disabled explicit and the browser has worker
- // support, create a new web worker and test if it/the browser fullfills
- // all requirements to run parts of pdf.js in a web worker.
- // Right now, the requirement is, that an Uint8Array is still an Uint8Array
- // as it arrives on the worker. Chrome added this with version 15.
- if (!globalScope.PDFJS.disableWorker && typeof Worker !== 'undefined') {
- var workerSrc = PDFJS.workerSrc;
- if (!workerSrc) {
- error('No PDFJS.workerSrc specified');
- }
-
- try {
- // Some versions of FF can't create a worker on localhost, see:
- // https://bugzilla.mozilla.org/show_bug.cgi?id=683280
- var worker = new Worker(workerSrc);
- var messageHandler = new MessageHandler('main', worker);
- this.messageHandler = messageHandler;
-
- messageHandler.on('test', function transportTest(data) {
- var supportTypedArray = data && data.supportTypedArray;
- if (supportTypedArray) {
- this.worker = worker;
- if (!data.supportTransfers) {
- PDFJS.postMessageTransfers = false;
- }
- this.setupMessageHandler(messageHandler);
- workerInitializedCapability.resolve();
- } else {
- globalScope.PDFJS.disableWorker = true;
- this.loadFakeWorkerFiles().then(function() {
- this.setupFakeWorker();
- workerInitializedCapability.resolve();
- }.bind(this));
- }
- }.bind(this));
-
- var testObj = new Uint8Array([PDFJS.postMessageTransfers ? 255 : 0]);
- // Some versions of Opera throw a DATA_CLONE_ERR on serializing the
- // typed array. Also, checking if we can use transfers.
- try {
- messageHandler.send('test', testObj, [testObj.buffer]);
- } catch (ex) {
- info('Cannot use postMessage transfers');
- testObj[0] = 0;
- messageHandler.send('test', testObj);
- }
- return;
- } catch (e) {
- info('The worker has been disabled.');
- }
- }
- // Either workers are disabled, not supported or have thrown an exception.
- // Thus, we fallback to a faked worker.
- globalScope.PDFJS.disableWorker = true;
- this.loadFakeWorkerFiles().then(function() {
- this.setupFakeWorker();
- workerInitializedCapability.resolve();
- }.bind(this));
- }
- WorkerTransport.prototype = {
- destroy: function WorkerTransport_destroy() {
- this.pageCache = [];
- this.pagePromises = [];
- var self = this;
- this.messageHandler.sendWithPromise('Terminate', null).then(function () {
- FontLoader.clear();
- if (self.worker) {
- self.worker.terminate();
- }
- });
- },
-
- loadFakeWorkerFiles: function WorkerTransport_loadFakeWorkerFiles() {
- if (!PDFJS.fakeWorkerFilesLoadedCapability) {
- PDFJS.fakeWorkerFilesLoadedCapability = createPromiseCapability();
- // In the developer build load worker_loader which in turn loads all the
- // other files and resolves the promise. In production only the
- // pdf.worker.js file is needed.
- Util.loadScript(PDFJS.workerSrc, function() {
- PDFJS.fakeWorkerFilesLoadedCapability.resolve();
- });
- }
- return PDFJS.fakeWorkerFilesLoadedCapability.promise;
- },
-
- setupFakeWorker: function WorkerTransport_setupFakeWorker() {
- warn('Setting up fake worker.');
- // If we don't use a worker, just post/sendMessage to the main thread.
- var fakeWorker = {
- postMessage: function WorkerTransport_postMessage(obj) {
- fakeWorker.onmessage({data: obj});
- },
- terminate: function WorkerTransport_terminate() {}
- };
-
- var messageHandler = new MessageHandler('main', fakeWorker);
- this.setupMessageHandler(messageHandler);
-
- // If the main thread is our worker, setup the handling for the messages
- // the main thread sends to it self.
- PDFJS.WorkerMessageHandler.setup(messageHandler);
- },
-
- setupMessageHandler:
- function WorkerTransport_setupMessageHandler(messageHandler) {
- this.messageHandler = messageHandler;
-
- function updatePassword(password) {
- messageHandler.send('UpdatePassword', password);
- }
-
- var pdfDataRangeTransport = this.pdfDataRangeTransport;
- if (pdfDataRangeTransport) {
- pdfDataRangeTransport.addRangeListener(function(begin, chunk) {
- messageHandler.send('OnDataRange', {
- begin: begin,
- chunk: chunk
- });
- });
-
- pdfDataRangeTransport.addProgressListener(function(loaded) {
- messageHandler.send('OnDataProgress', {
- loaded: loaded
- });
- });
-
- messageHandler.on('RequestDataRange',
- function transportDataRange(data) {
- pdfDataRangeTransport.requestDataRange(data.begin, data.end);
- }, this);
- }
-
- messageHandler.on('GetDoc', function transportDoc(data) {
- var pdfInfo = data.pdfInfo;
- this.numPages = data.pdfInfo.numPages;
- var pdfDocument = new PDFDocumentProxy(pdfInfo, this);
- this.pdfDocument = pdfDocument;
- this.workerReadyCapability.resolve(pdfDocument);
- }, this);
-
- messageHandler.on('NeedPassword', function transportPassword(data) {
- if (this.passwordCallback) {
- return this.passwordCallback(updatePassword,
- PasswordResponses.NEED_PASSWORD);
- }
- this.workerReadyCapability.reject(data.exception.message,
- data.exception);
- }, this);
-
- messageHandler.on('IncorrectPassword', function transportBadPass(data) {
- if (this.passwordCallback) {
- return this.passwordCallback(updatePassword,
- PasswordResponses.INCORRECT_PASSWORD);
- }
- this.workerReadyCapability.reject(data.exception.message,
- data.exception);
- }, this);
-
- messageHandler.on('InvalidPDF', function transportInvalidPDF(data) {
- this.workerReadyCapability.reject(data.exception.name, data.exception);
- }, this);
-
- messageHandler.on('MissingPDF', function transportMissingPDF(data) {
- this.workerReadyCapability.reject(data.exception.message,
- data.exception);
- }, this);
-
- messageHandler.on('UnknownError', function transportUnknownError(data) {
- this.workerReadyCapability.reject(data.exception.message,
- data.exception);
- }, this);
-
- messageHandler.on('DataLoaded', function transportPage(data) {
- this.downloadInfoCapability.resolve(data);
- }, this);
-
- messageHandler.on('StartRenderPage', function transportRender(data) {
- var page = this.pageCache[data.pageIndex];
-
- page.stats.timeEnd('Page Request');
- page._startRenderPage(data.transparency, data.intent);
- }, this);
-
- messageHandler.on('RenderPageChunk', function transportRender(data) {
- var page = this.pageCache[data.pageIndex];
-
- page._renderPageChunk(data.operatorList, data.intent);
- }, this);
-
- messageHandler.on('commonobj', function transportObj(data) {
- var id = data[0];
- var type = data[1];
- if (this.commonObjs.hasData(id)) {
- return;
- }
-
- switch (type) {
- case 'Font':
- var exportedData = data[2];
-
- var font;
- if ('error' in exportedData) {
- var error = exportedData.error;
- warn('Error during font loading: ' + error);
- this.commonObjs.resolve(id, error);
- break;
- } else {
- font = new FontFace(exportedData);
- }
-
- FontLoader.bind(
- [font],
- function fontReady(fontObjs) {
- this.commonObjs.resolve(id, font);
- }.bind(this)
- );
- break;
- case 'FontPath':
- this.commonObjs.resolve(id, data[2]);
- break;
- default:
- error('Got unknown common object type ' + type);
- }
- }, this);
-
- messageHandler.on('obj', function transportObj(data) {
- var id = data[0];
- var pageIndex = data[1];
- var type = data[2];
- var pageProxy = this.pageCache[pageIndex];
- var imageData;
- if (pageProxy.objs.hasData(id)) {
- return;
- }
-
- switch (type) {
- case 'JpegStream':
- imageData = data[3];
- loadJpegStream(id, imageData, pageProxy.objs);
- break;
- case 'Image':
- imageData = data[3];
- pageProxy.objs.resolve(id, imageData);
-
- // heuristics that will allow not to store large data
- var MAX_IMAGE_SIZE_TO_STORE = 8000000;
- if (imageData && 'data' in imageData &&
- imageData.data.length > MAX_IMAGE_SIZE_TO_STORE) {
- pageProxy.cleanupAfterRender = true;
- }
- break;
- default:
- error('Got unknown object type ' + type);
- }
- }, this);
-
- messageHandler.on('DocProgress', function transportDocProgress(data) {
- if (this.progressCallback) {
- this.progressCallback({
- loaded: data.loaded,
- total: data.total
- });
- }
- }, this);
-
- messageHandler.on('DocError', function transportDocError(data) {
- this.workerReadyCapability.reject(data);
- }, this);
-
- messageHandler.on('PageError', function transportError(data) {
- var page = this.pageCache[data.pageNum - 1];
- var intentState = page.intentStates[data.intent];
- if (intentState.displayReadyCapability.promise) {
- intentState.displayReadyCapability.reject(data.error);
- } else {
- error(data.error);
- }
- }, this);
-
- messageHandler.on('JpegDecode', function(data) {
- var imageUrl = data[0];
- var components = data[1];
- if (components != 3 && components != 1) {
- return Promise.reject(
- new Error('Only 3 components or 1 component can be returned'));
- }
-
- return new Promise(function (resolve, reject) {
- var img = new Image();
- img.onload = function () {
- var width = img.width;
- var height = img.height;
- var size = width * height;
- var rgbaLength = size * 4;
- var buf = new Uint8Array(size * components);
- var tmpCanvas = createScratchCanvas(width, height);
- var tmpCtx = tmpCanvas.getContext('2d');
- tmpCtx.drawImage(img, 0, 0);
- var data = tmpCtx.getImageData(0, 0, width, height).data;
- var i, j;
-
- if (components == 3) {
- for (i = 0, j = 0; i < rgbaLength; i += 4, j += 3) {
- buf[j] = data[i];
- buf[j + 1] = data[i + 1];
- buf[j + 2] = data[i + 2];
- }
- } else if (components == 1) {
- for (i = 0, j = 0; i < rgbaLength; i += 4, j++) {
- buf[j] = data[i];
- }
- }
- resolve({ data: buf, width: width, height: height});
- };
- img.onerror = function () {
- reject(new Error('JpegDecode failed to load image'));
- };
- img.src = imageUrl;
- });
- });
- },
-
- fetchDocument: function WorkerTransport_fetchDocument(source) {
- source.disableAutoFetch = PDFJS.disableAutoFetch;
- source.chunkedViewerLoading = !!this.pdfDataRangeTransport;
- this.messageHandler.send('GetDocRequest', {
- source: source,
- disableRange: PDFJS.disableRange,
- maxImageSize: PDFJS.maxImageSize,
- cMapUrl: PDFJS.cMapUrl,
- cMapPacked: PDFJS.cMapPacked,
- disableFontFace: PDFJS.disableFontFace,
- disableCreateObjectURL: PDFJS.disableCreateObjectURL,
- verbosity: PDFJS.verbosity
- });
- },
-
- getData: function WorkerTransport_getData() {
- return this.messageHandler.sendWithPromise('GetData', null);
- },
-
- getPage: function WorkerTransport_getPage(pageNumber, capability) {
- if (pageNumber <= 0 || pageNumber > this.numPages ||
- (pageNumber|0) !== pageNumber) {
- return Promise.reject(new Error('Invalid page request'));
- }
-
- var pageIndex = pageNumber - 1;
- if (pageIndex in this.pagePromises) {
- return this.pagePromises[pageIndex];
- }
- var promise = this.messageHandler.sendWithPromise('GetPage', {
- pageIndex: pageIndex
- }).then(function (pageInfo) {
- var page = new PDFPageProxy(pageIndex, pageInfo, this);
- this.pageCache[pageIndex] = page;
- return page;
- }.bind(this));
- this.pagePromises[pageIndex] = promise;
- return promise;
- },
-
- getPageIndex: function WorkerTransport_getPageIndexByRef(ref) {
- return this.messageHandler.sendWithPromise('GetPageIndex', { ref: ref });
- },
-
- getAnnotations: function WorkerTransport_getAnnotations(pageIndex) {
- return this.messageHandler.sendWithPromise('GetAnnotations',
- { pageIndex: pageIndex });
- },
-
- getDestinations: function WorkerTransport_getDestinations() {
- return this.messageHandler.sendWithPromise('GetDestinations', null);
- },
-
- getAttachments: function WorkerTransport_getAttachments() {
- return this.messageHandler.sendWithPromise('GetAttachments', null);
- },
-
- getJavaScript: function WorkerTransport_getJavaScript() {
- return this.messageHandler.sendWithPromise('GetJavaScript', null);
- },
-
- getOutline: function WorkerTransport_getOutline() {
- return this.messageHandler.sendWithPromise('GetOutline', null);
- },
-
- getMetadata: function WorkerTransport_getMetadata() {
- return this.messageHandler.sendWithPromise('GetMetadata', null).
- then(function transportMetadata(results) {
- return {
- info: results[0],
- metadata: (results[1] ? new PDFJS.Metadata(results[1]) : null)
- };
- });
- },
-
- startCleanup: function WorkerTransport_startCleanup() {
- this.messageHandler.sendWithPromise('Cleanup', null).
- then(function endCleanup() {
- for (var i = 0, ii = this.pageCache.length; i < ii; i++) {
- var page = this.pageCache[i];
- if (page) {
- page.destroy();
- }
- }
- this.commonObjs.clear();
- FontLoader.clear();
- }.bind(this));
- }
- };
- return WorkerTransport;
-
-})();
-
-/**
- * A PDF document and page is built of many objects. E.g. there are objects
- * for fonts, images, rendering code and such. These objects might get processed
- * inside of a worker. The `PDFObjects` implements some basic functions to
- * manage these objects.
- * @ignore
- */
-var PDFObjects = (function PDFObjectsClosure() {
- function PDFObjects() {
- this.objs = {};
- }
-
- PDFObjects.prototype = {
- /**
- * Internal function.
- * Ensures there is an object defined for `objId`.
- */
- ensureObj: function PDFObjects_ensureObj(objId) {
- if (this.objs[objId]) {
- return this.objs[objId];
- }
-
- var obj = {
- capability: createPromiseCapability(),
- data: null,
- resolved: false
- };
- this.objs[objId] = obj;
-
- return obj;
- },
-
- /**
- * If called *without* callback, this returns the data of `objId` but the
- * object needs to be resolved. If it isn't, this function throws.
- *
- * If called *with* a callback, the callback is called with the data of the
- * object once the object is resolved. That means, if you call this
- * function and the object is already resolved, the callback gets called
- * right away.
- */
- get: function PDFObjects_get(objId, callback) {
- // If there is a callback, then the get can be async and the object is
- // not required to be resolved right now
- if (callback) {
- this.ensureObj(objId).capability.promise.then(callback);
- return null;
- }
-
- // If there isn't a callback, the user expects to get the resolved data
- // directly.
- var obj = this.objs[objId];
-
- // If there isn't an object yet or the object isn't resolved, then the
- // data isn't ready yet!
- if (!obj || !obj.resolved) {
- error('Requesting object that isn\'t resolved yet ' + objId);
- }
-
- return obj.data;
- },
-
- /**
- * Resolves the object `objId` with optional `data`.
- */
- resolve: function PDFObjects_resolve(objId, data) {
- var obj = this.ensureObj(objId);
-
- obj.resolved = true;
- obj.data = data;
- obj.capability.resolve(data);
- },
-
- isResolved: function PDFObjects_isResolved(objId) {
- var objs = this.objs;
-
- if (!objs[objId]) {
- return false;
- } else {
- return objs[objId].resolved;
- }
- },
-
- hasData: function PDFObjects_hasData(objId) {
- return this.isResolved(objId);
- },
-
- /**
- * Returns the data of `objId` if object exists, null otherwise.
- */
- getData: function PDFObjects_getData(objId) {
- var objs = this.objs;
- if (!objs[objId] || !objs[objId].resolved) {
- return null;
- } else {
- return objs[objId].data;
- }
- },
-
- clear: function PDFObjects_clear() {
- this.objs = {};
- }
- };
- return PDFObjects;
-})();
-
-/**
- * Allows controlling of the rendering tasks.
- * @class
- */
-var RenderTask = (function RenderTaskClosure() {
- function RenderTask(internalRenderTask) {
- this.internalRenderTask = internalRenderTask;
- /**
- * Promise for rendering task completion.
- * @type {Promise}
- */
- this.promise = this.internalRenderTask.capability.promise;
- }
-
- RenderTask.prototype = /** @lends RenderTask.prototype */ {
- /**
- * Cancels the rendering task. If the task is currently rendering it will
- * not be cancelled until graphics pauses with a timeout. The promise that
- * this object extends will resolved when cancelled.
- */
- cancel: function RenderTask_cancel() {
- this.internalRenderTask.cancel();
- },
-
- /**
- * Registers callback to indicate the rendering task completion.
- *
- * @param {function} onFulfilled The callback for the rendering completion.
- * @param {function} onRejected The callback for the rendering failure.
- * @return {Promise} A promise that is resolved after the onFulfilled or
- * onRejected callback.
- */
- then: function RenderTask_then(onFulfilled, onRejected) {
- return this.promise.then(onFulfilled, onRejected);
- }
- };
-
- return RenderTask;
-})();
-
-/**
- * For internal use only.
- * @ignore
- */
-var InternalRenderTask = (function InternalRenderTaskClosure() {
-
- function InternalRenderTask(callback, params, objs, commonObjs, operatorList,
- pageNumber) {
- this.callback = callback;
- this.params = params;
- this.objs = objs;
- this.commonObjs = commonObjs;
- this.operatorListIdx = null;
- this.operatorList = operatorList;
- this.pageNumber = pageNumber;
- this.running = false;
- this.graphicsReadyCallback = null;
- this.graphicsReady = false;
- this.cancelled = false;
- this.capability = createPromiseCapability();
- // caching this-bound methods
- this._continueBound = this._continue.bind(this);
- this._scheduleNextBound = this._scheduleNext.bind(this);
- this._nextBound = this._next.bind(this);
- }
-
- InternalRenderTask.prototype = {
-
- initalizeGraphics:
- function InternalRenderTask_initalizeGraphics(transparency) {
-
- if (this.cancelled) {
- return;
- }
- if (PDFJS.pdfBug && 'StepperManager' in globalScope &&
- globalScope.StepperManager.enabled) {
- this.stepper = globalScope.StepperManager.create(this.pageNumber - 1);
- this.stepper.init(this.operatorList);
- this.stepper.nextBreakPoint = this.stepper.getNextBreakPoint();
- }
-
- var params = this.params;
- this.gfx = new CanvasGraphics(params.canvasContext, this.commonObjs,
- this.objs, params.imageLayer);
-
- this.gfx.beginDrawing(params.viewport, transparency);
- this.operatorListIdx = 0;
- this.graphicsReady = true;
- if (this.graphicsReadyCallback) {
- this.graphicsReadyCallback();
- }
- },
-
- cancel: function InternalRenderTask_cancel() {
- this.running = false;
- this.cancelled = true;
- this.callback('cancelled');
- },
-
- operatorListChanged: function InternalRenderTask_operatorListChanged() {
- if (!this.graphicsReady) {
- if (!this.graphicsReadyCallback) {
- this.graphicsReadyCallback = this._continueBound;
- }
- return;
- }
-
- if (this.stepper) {
- this.stepper.updateOperatorList(this.operatorList);
- }
-
- if (this.running) {
- return;
- }
- this._continue();
- },
-
- _continue: function InternalRenderTask__continue() {
- this.running = true;
- if (this.cancelled) {
- return;
- }
- if (this.params.continueCallback) {
- this.params.continueCallback(this._scheduleNextBound);
- } else {
- this._scheduleNext();
- }
- },
-
- _scheduleNext: function InternalRenderTask__scheduleNext() {
- window.requestAnimationFrame(this._nextBound);
- },
-
- _next: function InternalRenderTask__next() {
- if (this.cancelled) {
- return;
- }
- this.operatorListIdx = this.gfx.executeOperatorList(this.operatorList,
- this.operatorListIdx,
- this._continueBound,
- this.stepper);
- if (this.operatorListIdx === this.operatorList.argsArray.length) {
- this.running = false;
- if (this.operatorList.lastChunk) {
- this.gfx.endDrawing();
- this.callback();
- }
- }
- }
-
- };
-
- return InternalRenderTask;
-})();
-
-
-var Metadata = PDFJS.Metadata = (function MetadataClosure() {
- function fixMetadata(meta) {
- return meta.replace(/>\\376\\377([^<]+)/g, function(all, codes) {
- var bytes = codes.replace(/\\([0-3])([0-7])([0-7])/g,
- function(code, d1, d2, d3) {
- return String.fromCharCode(d1 * 64 + d2 * 8 + d3 * 1);
- });
- var chars = '';
- for (var i = 0; i < bytes.length; i += 2) {
- var code = bytes.charCodeAt(i) * 256 + bytes.charCodeAt(i + 1);
- chars += code >= 32 && code < 127 && code != 60 && code != 62 &&
- code != 38 && false ? String.fromCharCode(code) :
- '&#x' + (0x10000 + code).toString(16).substring(1) + ';';
- }
- return '>' + chars;
- });
- }
-
- function Metadata(meta) {
- if (typeof meta === 'string') {
- // Ghostscript produces invalid metadata
- meta = fixMetadata(meta);
-
- var parser = new DOMParser();
- meta = parser.parseFromString(meta, 'application/xml');
- } else if (!(meta instanceof Document)) {
- error('Metadata: Invalid metadata object');
- }
-
- this.metaDocument = meta;
- this.metadata = {};
- this.parse();
- }
-
- Metadata.prototype = {
- parse: function Metadata_parse() {
- var doc = this.metaDocument;
- var rdf = doc.documentElement;
-
- if (rdf.nodeName.toLowerCase() !== 'rdf:rdf') { // Wrapped in <xmpmeta>
- rdf = rdf.firstChild;
- while (rdf && rdf.nodeName.toLowerCase() !== 'rdf:rdf') {
- rdf = rdf.nextSibling;
- }
- }
-
- var nodeName = (rdf) ? rdf.nodeName.toLowerCase() : null;
- if (!rdf || nodeName !== 'rdf:rdf' || !rdf.hasChildNodes()) {
- return;
- }
-
- var children = rdf.childNodes, desc, entry, name, i, ii, length, iLength;
- for (i = 0, length = children.length; i < length; i++) {
- desc = children[i];
- if (desc.nodeName.toLowerCase() !== 'rdf:description') {
- continue;
- }
-
- for (ii = 0, iLength = desc.childNodes.length; ii < iLength; ii++) {
- if (desc.childNodes[ii].nodeName.toLowerCase() !== '#text') {
- entry = desc.childNodes[ii];
- name = entry.nodeName.toLowerCase();
- this.metadata[name] = entry.textContent.trim();
- }
- }
- }
- },
-
- get: function Metadata_get(name) {
- return this.metadata[name] || null;
- },
-
- has: function Metadata_has(name) {
- return typeof this.metadata[name] !== 'undefined';
- }
- };
-
- return Metadata;
-})();
-
-
-// <canvas> contexts store most of the state we need natively.
-// However, PDF needs a bit more state, which we store here.
-
-// Minimal font size that would be used during canvas fillText operations.
-var MIN_FONT_SIZE = 16;
-var MAX_GROUP_SIZE = 4096;
-
-var COMPILE_TYPE3_GLYPHS = true;
-
-function createScratchCanvas(width, height) {
- var canvas = document.createElement('canvas');
- canvas.width = width;
- canvas.height = height;
- return canvas;
-}
-
-function addContextCurrentTransform(ctx) {
- // If the context doesn't expose a `mozCurrentTransform`, add a JS based on.
- if (!ctx.mozCurrentTransform) {
- // Store the original context
- ctx._scaleX = ctx._scaleX || 1.0;
- ctx._scaleY = ctx._scaleY || 1.0;
- ctx._originalSave = ctx.save;
- ctx._originalRestore = ctx.restore;
- ctx._originalRotate = ctx.rotate;
- ctx._originalScale = ctx.scale;
- ctx._originalTranslate = ctx.translate;
- ctx._originalTransform = ctx.transform;
- ctx._originalSetTransform = ctx.setTransform;
-
- ctx._transformMatrix = [ctx._scaleX, 0, 0, ctx._scaleY, 0, 0];
- ctx._transformStack = [];
-
- Object.defineProperty(ctx, 'mozCurrentTransform', {
- get: function getCurrentTransform() {
- return this._transformMatrix;
- }
- });
-
- Object.defineProperty(ctx, 'mozCurrentTransformInverse', {
- get: function getCurrentTransformInverse() {
- // Calculation done using WolframAlpha:
- // http://www.wolframalpha.com/input/?
- // i=Inverse+{{a%2C+c%2C+e}%2C+{b%2C+d%2C+f}%2C+{0%2C+0%2C+1}}
-
- var m = this._transformMatrix;
- var a = m[0], b = m[1], c = m[2], d = m[3], e = m[4], f = m[5];
-
- var ad_bc = a * d - b * c;
- var bc_ad = b * c - a * d;
-
- return [
- d / ad_bc,
- b / bc_ad,
- c / bc_ad,
- a / ad_bc,
- (d * e - c * f) / bc_ad,
- (b * e - a * f) / ad_bc
- ];
- }
- });
-
- ctx.save = function ctxSave() {
- var old = this._transformMatrix;
- this._transformStack.push(old);
- this._transformMatrix = old.slice(0, 6);
-
- this._originalSave();
- };
-
- ctx.restore = function ctxRestore() {
- var prev = this._transformStack.pop();
- if (prev) {
- this._transformMatrix = prev;
- this._originalRestore();
- }
- };
-
- ctx.translate = function ctxTranslate(x, y) {
- var m = this._transformMatrix;
- m[4] = m[0] * x + m[2] * y + m[4];
- m[5] = m[1] * x + m[3] * y + m[5];
-
- this._originalTranslate(x, y);
- };
-
- ctx.scale = function ctxScale(x, y) {
- var m = this._transformMatrix;
- m[0] = m[0] * x;
- m[1] = m[1] * x;
- m[2] = m[2] * y;
- m[3] = m[3] * y;
-
- this._originalScale(x, y);
- };
-
- ctx.transform = function ctxTransform(a, b, c, d, e, f) {
- var m = this._transformMatrix;
- this._transformMatrix = [
- m[0] * a + m[2] * b,
- m[1] * a + m[3] * b,
- m[0] * c + m[2] * d,
- m[1] * c + m[3] * d,
- m[0] * e + m[2] * f + m[4],
- m[1] * e + m[3] * f + m[5]
- ];
-
- ctx._originalTransform(a, b, c, d, e, f);
- };
-
- ctx.setTransform = function ctxSetTransform(a, b, c, d, e, f) {
- this._transformMatrix = [a, b, c, d, e, f];
-
- ctx._originalSetTransform(a, b, c, d, e, f);
- };
-
- ctx.rotate = function ctxRotate(angle) {
- var cosValue = Math.cos(angle);
- var sinValue = Math.sin(angle);
-
- var m = this._transformMatrix;
- this._transformMatrix = [
- m[0] * cosValue + m[2] * sinValue,
- m[1] * cosValue + m[3] * sinValue,
- m[0] * (-sinValue) + m[2] * cosValue,
- m[1] * (-sinValue) + m[3] * cosValue,
- m[4],
- m[5]
- ];
-
- this._originalRotate(angle);
- };
- }
-}
-
-var CachedCanvases = (function CachedCanvasesClosure() {
- var cache = {};
- return {
- getCanvas: function CachedCanvases_getCanvas(id, width, height,
- trackTransform) {
- var canvasEntry;
- if (id in cache) {
- canvasEntry = cache[id];
- canvasEntry.canvas.width = width;
- canvasEntry.canvas.height = height;
- // reset canvas transform for emulated mozCurrentTransform, if needed
- canvasEntry.context.setTransform(1, 0, 0, 1, 0, 0);
- } else {
- var canvas = createScratchCanvas(width, height);
- var ctx = canvas.getContext('2d');
- if (trackTransform) {
- addContextCurrentTransform(ctx);
- }
- cache[id] = canvasEntry = {canvas: canvas, context: ctx};
- }
- return canvasEntry;
- },
- clear: function () {
- cache = {};
- }
- };
-})();
-
-function compileType3Glyph(imgData) {
- var POINT_TO_PROCESS_LIMIT = 1000;
-
- var width = imgData.width, height = imgData.height;
- var i, j, j0, width1 = width + 1;
- var points = new Uint8Array(width1 * (height + 1));
- var POINT_TYPES =
- new Uint8Array([0, 2, 4, 0, 1, 0, 5, 4, 8, 10, 0, 8, 0, 2, 1, 0]);
-
- // decodes bit-packed mask data
- var lineSize = (width + 7) & ~7, data0 = imgData.data;
- var data = new Uint8Array(lineSize * height), pos = 0, ii;
- for (i = 0, ii = data0.length; i < ii; i++) {
- var mask = 128, elem = data0[i];
- while (mask > 0) {
- data[pos++] = (elem & mask) ? 0 : 255;
- mask >>= 1;
- }
- }
-
- // finding iteresting points: every point is located between mask pixels,
- // so there will be points of the (width + 1)x(height + 1) grid. Every point
- // will have flags assigned based on neighboring mask pixels:
- // 4 | 8
- // --P--
- // 2 | 1
- // We are interested only in points with the flags:
- // - outside corners: 1, 2, 4, 8;
- // - inside corners: 7, 11, 13, 14;
- // - and, intersections: 5, 10.
- var count = 0;
- pos = 0;
- if (data[pos] !== 0) {
- points[0] = 1;
- ++count;
- }
- for (j = 1; j < width; j++) {
- if (data[pos] !== data[pos + 1]) {
- points[j] = data[pos] ? 2 : 1;
- ++count;
- }
- pos++;
- }
- if (data[pos] !== 0) {
- points[j] = 2;
- ++count;
- }
- for (i = 1; i < height; i++) {
- pos = i * lineSize;
- j0 = i * width1;
- if (data[pos - lineSize] !== data[pos]) {
- points[j0] = data[pos] ? 1 : 8;
- ++count;
- }
- // 'sum' is the position of the current pixel configuration in the 'TYPES'
- // array (in order 8-1-2-4, so we can use '>>2' to shift the column).
- var sum = (data[pos] ? 4 : 0) + (data[pos - lineSize] ? 8 : 0);
- for (j = 1; j < width; j++) {
- sum = (sum >> 2) + (data[pos + 1] ? 4 : 0) +
- (data[pos - lineSize + 1] ? 8 : 0);
- if (POINT_TYPES[sum]) {
- points[j0 + j] = POINT_TYPES[sum];
- ++count;
- }
- pos++;
- }
- if (data[pos - lineSize] !== data[pos]) {
- points[j0 + j] = data[pos] ? 2 : 4;
- ++count;
- }
-
- if (count > POINT_TO_PROCESS_LIMIT) {
- return null;
- }
- }
-
- pos = lineSize * (height - 1);
- j0 = i * width1;
- if (data[pos] !== 0) {
- points[j0] = 8;
- ++count;
- }
- for (j = 1; j < width; j++) {
- if (data[pos] !== data[pos + 1]) {
- points[j0 + j] = data[pos] ? 4 : 8;
- ++count;
- }
- pos++;
- }
- if (data[pos] !== 0) {
- points[j0 + j] = 4;
- ++count;
- }
- if (count > POINT_TO_PROCESS_LIMIT) {
- return null;
- }
-
- // building outlines
- var steps = new Int32Array([0, width1, -1, 0, -width1, 0, 0, 0, 1]);
- var outlines = [];
- for (i = 0; count && i <= height; i++) {
- var p = i * width1;
- var end = p + width;
- while (p < end && !points[p]) {
- p++;
- }
- if (p === end) {
- continue;
- }
- var coords = [p % width1, i];
-
- var type = points[p], p0 = p, pp;
- do {
- var step = steps[type];
- do {
- p += step;
- } while (!points[p]);
-
- pp = points[p];
- if (pp !== 5 && pp !== 10) {
- // set new direction
- type = pp;
- // delete mark
- points[p] = 0;
- } else { // type is 5 or 10, ie, a crossing
- // set new direction
- type = pp & ((0x33 * type) >> 4);
- // set new type for "future hit"
- points[p] &= (type >> 2 | type << 2);
- }
-
- coords.push(p % width1);
- coords.push((p / width1) | 0);
- --count;
- } while (p0 !== p);
- outlines.push(coords);
- --i;
- }
-
- var drawOutline = function(c) {
- c.save();
- // the path shall be painted in [0..1]x[0..1] space
- c.scale(1 / width, -1 / height);
- c.translate(0, -height);
- c.beginPath();
- for (var i = 0, ii = outlines.length; i < ii; i++) {
- var o = outlines[i];
- c.moveTo(o[0], o[1]);
- for (var j = 2, jj = o.length; j < jj; j += 2) {
- c.lineTo(o[j], o[j+1]);
- }
- }
- c.fill();
- c.beginPath();
- c.restore();
- };
-
- return drawOutline;
-}
-
-var CanvasExtraState = (function CanvasExtraStateClosure() {
- function CanvasExtraState(old) {
- // Are soft masks and alpha values shapes or opacities?
- this.alphaIsShape = false;
- this.fontSize = 0;
- this.fontSizeScale = 1;
- this.textMatrix = IDENTITY_MATRIX;
- this.textMatrixScale = 1;
- this.fontMatrix = FONT_IDENTITY_MATRIX;
- this.leading = 0;
- // Current point (in user coordinates)
- this.x = 0;
- this.y = 0;
- // Start of text line (in text coordinates)
- this.lineX = 0;
- this.lineY = 0;
- // Character and word spacing
- this.charSpacing = 0;
- this.wordSpacing = 0;
- this.textHScale = 1;
- this.textRenderingMode = TextRenderingMode.FILL;
- this.textRise = 0;
- // Default fore and background colors
- this.fillColor = '#000000';
- this.strokeColor = '#000000';
- // Note: fill alpha applies to all non-stroking operations
- this.fillAlpha = 1;
- this.strokeAlpha = 1;
- this.lineWidth = 1;
- this.activeSMask = null; // nonclonable field (see the save method below)
-
- this.old = old;
- }
-
- CanvasExtraState.prototype = {
- clone: function CanvasExtraState_clone() {
- return Object.create(this);
- },
- setCurrentPoint: function CanvasExtraState_setCurrentPoint(x, y) {
- this.x = x;
- this.y = y;
- }
- };
- return CanvasExtraState;
-})();
-
-var CanvasGraphics = (function CanvasGraphicsClosure() {
- // Defines the time the executeOperatorList is going to be executing
- // before it stops and shedules a continue of execution.
- var EXECUTION_TIME = 15;
-
- function CanvasGraphics(canvasCtx, commonObjs, objs, imageLayer) {
- this.ctx = canvasCtx;
- this.current = new CanvasExtraState();
- this.stateStack = [];
- this.pendingClip = null;
- this.pendingEOFill = false;
- this.res = null;
- this.xobjs = null;
- this.commonObjs = commonObjs;
- this.objs = objs;
- this.imageLayer = imageLayer;
- this.groupStack = [];
- this.processingType3 = null;
- // Patterns are painted relative to the initial page/form transform, see pdf
- // spec 8.7.2 NOTE 1.
- this.baseTransform = null;
- this.baseTransformStack = [];
- this.groupLevel = 0;
- this.smaskStack = [];
- this.smaskCounter = 0;
- this.tempSMask = null;
- if (canvasCtx) {
- addContextCurrentTransform(canvasCtx);
- }
- }
-
- function putBinaryImageData(ctx, imgData) {
- if (typeof ImageData !== 'undefined' && imgData instanceof ImageData) {
- ctx.putImageData(imgData, 0, 0);
- return;
- }
-
- // Put the image data to the canvas in chunks, rather than putting the
- // whole image at once. This saves JS memory, because the ImageData object
- // is smaller. It also possibly saves C++ memory within the implementation
- // of putImageData(). (E.g. in Firefox we make two short-lived copies of
- // the data passed to putImageData()). |n| shouldn't be too small, however,
- // because too many putImageData() calls will slow things down.
- //
- // Note: as written, if the last chunk is partial, the putImageData() call
- // will (conceptually) put pixels past the bounds of the canvas. But
- // that's ok; any such pixels are ignored.
-
- var height = imgData.height, width = imgData.width;
- var fullChunkHeight = 16;
- var fracChunks = height / fullChunkHeight;
- var fullChunks = Math.floor(fracChunks);
- var totalChunks = Math.ceil(fracChunks);
- var partialChunkHeight = height - fullChunks * fullChunkHeight;
-
- var chunkImgData = ctx.createImageData(width, fullChunkHeight);
- var srcPos = 0, destPos;
- var src = imgData.data;
- var dest = chunkImgData.data;
- var i, j, thisChunkHeight, elemsInThisChunk;
-
- // There are multiple forms in which the pixel data can be passed, and
- // imgData.kind tells us which one this is.
- if (imgData.kind === ImageKind.GRAYSCALE_1BPP) {
- // Grayscale, 1 bit per pixel (i.e. black-and-white).
- var srcLength = src.byteLength;
- var dest32 = PDFJS.hasCanvasTypedArrays ? new Uint32Array(dest.buffer) :
- new Uint32ArrayView(dest);
- var dest32DataLength = dest32.length;
- var fullSrcDiff = (width + 7) >> 3;
- var white = 0xFFFFFFFF;
- var black = (PDFJS.isLittleEndian || !PDFJS.hasCanvasTypedArrays) ?
- 0xFF000000 : 0x000000FF;
- for (i = 0; i < totalChunks; i++) {
- thisChunkHeight =
- (i < fullChunks) ? fullChunkHeight : partialChunkHeight;
- destPos = 0;
- for (j = 0; j < thisChunkHeight; j++) {
- var srcDiff = srcLength - srcPos;
- var k = 0;
- var kEnd = (srcDiff > fullSrcDiff) ? width : srcDiff * 8 - 7;
- var kEndUnrolled = kEnd & ~7;
- var mask = 0;
- var srcByte = 0;
- for (; k < kEndUnrolled; k += 8) {
- srcByte = src[srcPos++];
- dest32[destPos++] = (srcByte & 128) ? white : black;
- dest32[destPos++] = (srcByte & 64) ? white : black;
- dest32[destPos++] = (srcByte & 32) ? white : black;
- dest32[destPos++] = (srcByte & 16) ? white : black;
- dest32[destPos++] = (srcByte & 8) ? white : black;
- dest32[destPos++] = (srcByte & 4) ? white : black;
- dest32[destPos++] = (srcByte & 2) ? white : black;
- dest32[destPos++] = (srcByte & 1) ? white : black;
- }
- for (; k < kEnd; k++) {
- if (mask === 0) {
- srcByte = src[srcPos++];
- mask = 128;
- }
-
- dest32[destPos++] = (srcByte & mask) ? white : black;
- mask >>= 1;
- }
- }
- // We ran out of input. Make all remaining pixels transparent.
- while (destPos < dest32DataLength) {
- dest32[destPos++] = 0;
- }
-
- ctx.putImageData(chunkImgData, 0, i * fullChunkHeight);
- }
- } else if (imgData.kind === ImageKind.RGBA_32BPP) {
- // RGBA, 32-bits per pixel.
-
- j = 0;
- elemsInThisChunk = width * fullChunkHeight * 4;
- for (i = 0; i < fullChunks; i++) {
- dest.set(src.subarray(srcPos, srcPos + elemsInThisChunk));
- srcPos += elemsInThisChunk;
-
- ctx.putImageData(chunkImgData, 0, j);
- j += fullChunkHeight;
- }
- if (i < totalChunks) {
- elemsInThisChunk = width * partialChunkHeight * 4;
- dest.set(src.subarray(srcPos, srcPos + elemsInThisChunk));
- ctx.putImageData(chunkImgData, 0, j);
- }
-
- } else if (imgData.kind === ImageKind.RGB_24BPP) {
- // RGB, 24-bits per pixel.
- thisChunkHeight = fullChunkHeight;
- elemsInThisChunk = width * thisChunkHeight;
- for (i = 0; i < totalChunks; i++) {
- if (i >= fullChunks) {
- thisChunkHeight =partialChunkHeight;
- elemsInThisChunk = width * thisChunkHeight;
- }
-
- destPos = 0;
- for (j = elemsInThisChunk; j--;) {
- dest[destPos++] = src[srcPos++];
- dest[destPos++] = src[srcPos++];
- dest[destPos++] = src[srcPos++];
- dest[destPos++] = 255;
- }
- ctx.putImageData(chunkImgData, 0, i * fullChunkHeight);
- }
- } else {
- error('bad image kind: ' + imgData.kind);
- }
- }
-
- function putBinaryImageMask(ctx, imgData) {
- var height = imgData.height, width = imgData.width;
- var fullChunkHeight = 16;
- var fracChunks = height / fullChunkHeight;
- var fullChunks = Math.floor(fracChunks);
- var totalChunks = Math.ceil(fracChunks);
- var partialChunkHeight = height - fullChunks * fullChunkHeight;
-
- var chunkImgData = ctx.createImageData(width, fullChunkHeight);
- var srcPos = 0;
- var src = imgData.data;
- var dest = chunkImgData.data;
-
- for (var i = 0; i < totalChunks; i++) {
- var thisChunkHeight =
- (i < fullChunks) ? fullChunkHeight : partialChunkHeight;
-
- // Expand the mask so it can be used by the canvas. Any required
- // inversion has already been handled.
- var destPos = 3; // alpha component offset
- for (var j = 0; j < thisChunkHeight; j++) {
- var mask = 0;
- for (var k = 0; k < width; k++) {
- if (!mask) {
- var elem = src[srcPos++];
- mask = 128;
- }
- dest[destPos] = (elem & mask) ? 0 : 255;
- destPos += 4;
- mask >>= 1;
- }
- }
- ctx.putImageData(chunkImgData, 0, i * fullChunkHeight);
- }
- }
-
- function copyCtxState(sourceCtx, destCtx) {
- var properties = ['strokeStyle', 'fillStyle', 'fillRule', 'globalAlpha',
- 'lineWidth', 'lineCap', 'lineJoin', 'miterLimit',
- 'globalCompositeOperation', 'font'];
- for (var i = 0, ii = properties.length; i < ii; i++) {
- var property = properties[i];
- if (property in sourceCtx) {
- destCtx[property] = sourceCtx[property];
- }
- }
- if ('setLineDash' in sourceCtx) {
- destCtx.setLineDash(sourceCtx.getLineDash());
- destCtx.lineDashOffset = sourceCtx.lineDashOffset;
- } else if ('mozDash' in sourceCtx) {
- destCtx.mozDash = sourceCtx.mozDash;
- destCtx.mozDashOffset = sourceCtx.mozDashOffset;
- }
- }
-
- function genericComposeSMask(maskCtx, layerCtx, width, height,
- subtype, backdrop) {
- var addBackdropFn;
- if (backdrop) {
- addBackdropFn = function (r0, g0, b0, bytes) {
- var length = bytes.length;
- for (var i = 3; i < length; i += 4) {
- var alpha = bytes[i] / 255;
- if (alpha === 0) {
- bytes[i - 3] = r0;
- bytes[i - 2] = g0;
- bytes[i - 1] = b0;
- } else if (alpha < 1) {
- var alpha_ = 1 - alpha;
- bytes[i - 3] = (bytes[i - 3] * alpha + r0 * alpha_) | 0;
- bytes[i - 2] = (bytes[i - 2] * alpha + g0 * alpha_) | 0;
- bytes[i - 1] = (bytes[i - 1] * alpha + b0 * alpha_) | 0;
- }
- }
- }.bind(null, backdrop[0], backdrop[1], backdrop[2]);
- } else {
- addBackdropFn = function () {};
- }
-
- var composeFn;
- if (subtype === 'Luminosity') {
- composeFn = function (maskDataBytes, layerDataBytes) {
- var length = maskDataBytes.length;
- for (var i = 3; i < length; i += 4) {
- var y = ((maskDataBytes[i - 3] * 77) + // * 0.3 / 255 * 0x10000
- (maskDataBytes[i - 2] * 152) + // * 0.59 ....
- (maskDataBytes[i - 1] * 28)) | 0; // * 0.11 ....
- layerDataBytes[i] = (layerDataBytes[i] * y) >> 16;
- }
- };
- } else {
- composeFn = function (maskDataBytes, layerDataBytes) {
- var length = maskDataBytes.length;
- for (var i = 3; i < length; i += 4) {
- var alpha = maskDataBytes[i];
- layerDataBytes[i] = (layerDataBytes[i] * alpha / 255) | 0;
- }
- };
- }
-
- // processing image in chunks to save memory
- var PIXELS_TO_PROCESS = 65536;
- var chunkSize = Math.min(height, Math.ceil(PIXELS_TO_PROCESS / width));
- for (var row = 0; row < height; row += chunkSize) {
- var chunkHeight = Math.min(chunkSize, height - row);
- var maskData = maskCtx.getImageData(0, row, width, chunkHeight);
- var layerData = layerCtx.getImageData(0, row, width, chunkHeight);
-
- addBackdropFn(maskData.data);
- composeFn(maskData.data, layerData.data);
-
- maskCtx.putImageData(layerData, 0, row);
- }
- }
-
- function composeSMask(ctx, smask, layerCtx) {
- var mask = smask.canvas;
- var maskCtx = smask.context;
-
- ctx.setTransform(smask.scaleX, 0, 0, smask.scaleY,
- smask.offsetX, smask.offsetY);
-
- var backdrop = smask.backdrop || null;
- if (WebGLUtils.isEnabled) {
- var composed = WebGLUtils.composeSMask(layerCtx.canvas, mask,
- {subtype: smask.subtype, backdrop: backdrop});
- ctx.setTransform(1, 0, 0, 1, 0, 0);
- ctx.drawImage(composed, smask.offsetX, smask.offsetY);
- return;
- }
- genericComposeSMask(maskCtx, layerCtx, mask.width, mask.height,
- smask.subtype, backdrop);
- ctx.drawImage(mask, 0, 0);
- }
-
- var LINE_CAP_STYLES = ['butt', 'round', 'square'];
- var LINE_JOIN_STYLES = ['miter', 'round', 'bevel'];
- var NORMAL_CLIP = {};
- var EO_CLIP = {};
-
- CanvasGraphics.prototype = {
-
- beginDrawing: function CanvasGraphics_beginDrawing(viewport, transparency) {
- // For pdfs that use blend modes we have to clear the canvas else certain
- // blend modes can look wrong since we'd be blending with a white
- // backdrop. The problem with a transparent backdrop though is we then
- // don't get sub pixel anti aliasing on text, so we fill with white if
- // we can.
- var width = this.ctx.canvas.width;
- var height = this.ctx.canvas.height;
- if (transparency) {
- this.ctx.clearRect(0, 0, width, height);
- } else {
- this.ctx.mozOpaque = true;
- this.ctx.save();
- this.ctx.fillStyle = 'rgb(255, 255, 255)';
- this.ctx.fillRect(0, 0, width, height);
- this.ctx.restore();
- }
-
- var transform = viewport.transform;
-
- this.ctx.save();
- this.ctx.transform.apply(this.ctx, transform);
-
- this.baseTransform = this.ctx.mozCurrentTransform.slice();
-
- if (this.imageLayer) {
- this.imageLayer.beginLayout();
- }
- },
-
- executeOperatorList: function CanvasGraphics_executeOperatorList(
- operatorList,
- executionStartIdx, continueCallback,
- stepper) {
- var argsArray = operatorList.argsArray;
- var fnArray = operatorList.fnArray;
- var i = executionStartIdx || 0;
- var argsArrayLen = argsArray.length;
-
- // Sometimes the OperatorList to execute is empty.
- if (argsArrayLen == i) {
- return i;
- }
-
- var endTime = Date.now() + EXECUTION_TIME;
-
- var commonObjs = this.commonObjs;
- var objs = this.objs;
- var fnId;
-
- while (true) {
- if (stepper && i === stepper.nextBreakPoint) {
- stepper.breakIt(i, continueCallback);
- return i;
- }
-
- fnId = fnArray[i];
-
- if (fnId !== OPS.dependency) {
- this[fnId].apply(this, argsArray[i]);
- } else {
- var deps = argsArray[i];
- for (var n = 0, nn = deps.length; n < nn; n++) {
- var depObjId = deps[n];
- var common = depObjId.substring(0, 2) == 'g_';
-
- // If the promise isn't resolved yet, add the continueCallback
- // to the promise and bail out.
- if (!common && !objs.isResolved(depObjId)) {
- objs.get(depObjId, continueCallback);
- return i;
- }
- if (common && !commonObjs.isResolved(depObjId)) {
- commonObjs.get(depObjId, continueCallback);
- return i;
- }
- }
- }
-
- i++;
-
- // If the entire operatorList was executed, stop as were done.
- if (i == argsArrayLen) {
- return i;
- }
-
- // If the execution took longer then a certain amount of time and
- // `continueCallback` is specified, interrupt the execution.
- if (continueCallback && Date.now() > endTime) {
- continueCallback();
- return i;
- }
-
- // If the operatorList isn't executed completely yet OR the execution
- // time was short enough, do another execution round.
- }
- },
-
- endDrawing: function CanvasGraphics_endDrawing() {
- this.ctx.restore();
- CachedCanvases.clear();
- WebGLUtils.clear();
-
- if (this.imageLayer) {
- this.imageLayer.endLayout();
- }
- },
-
- // Graphics state
- setLineWidth: function CanvasGraphics_setLineWidth(width) {
- this.current.lineWidth = width;
- this.ctx.lineWidth = width;
- },
- setLineCap: function CanvasGraphics_setLineCap(style) {
- this.ctx.lineCap = LINE_CAP_STYLES[style];
- },
- setLineJoin: function CanvasGraphics_setLineJoin(style) {
- this.ctx.lineJoin = LINE_JOIN_STYLES[style];
- },
- setMiterLimit: function CanvasGraphics_setMiterLimit(limit) {
- this.ctx.miterLimit = limit;
- },
- setDash: function CanvasGraphics_setDash(dashArray, dashPhase) {
- var ctx = this.ctx;
- if ('setLineDash' in ctx) {
- ctx.setLineDash(dashArray);
- ctx.lineDashOffset = dashPhase;
- } else {
- ctx.mozDash = dashArray;
- ctx.mozDashOffset = dashPhase;
- }
- },
- setRenderingIntent: function CanvasGraphics_setRenderingIntent(intent) {
- // Maybe if we one day fully support color spaces this will be important
- // for now we can ignore.
- // TODO set rendering intent?
- },
- setFlatness: function CanvasGraphics_setFlatness(flatness) {
- // There's no way to control this with canvas, but we can safely ignore.
- // TODO set flatness?
- },
- setGState: function CanvasGraphics_setGState(states) {
- for (var i = 0, ii = states.length; i < ii; i++) {
- var state = states[i];
- var key = state[0];
- var value = state[1];
-
- switch (key) {
- case 'LW':
- this.setLineWidth(value);
- break;
- case 'LC':
- this.setLineCap(value);
- break;
- case 'LJ':
- this.setLineJoin(value);
- break;
- case 'ML':
- this.setMiterLimit(value);
- break;
- case 'D':
- this.setDash(value[0], value[1]);
- break;
- case 'RI':
- this.setRenderingIntent(value);
- break;
- case 'FL':
- this.setFlatness(value);
- break;
- case 'Font':
- this.setFont(value[0], value[1]);
- break;
- case 'CA':
- this.current.strokeAlpha = state[1];
- break;
- case 'ca':
- this.current.fillAlpha = state[1];
- this.ctx.globalAlpha = state[1];
- break;
- case 'BM':
- if (value && value.name && (value.name !== 'Normal')) {
- var mode = value.name.replace(/([A-Z])/g,
- function(c) {
- return '-' + c.toLowerCase();
- }
- ).substring(1);
- this.ctx.globalCompositeOperation = mode;
- if (this.ctx.globalCompositeOperation !== mode) {
- warn('globalCompositeOperation "' + mode +
- '" is not supported');
- }
- } else {
- this.ctx.globalCompositeOperation = 'source-over';
- }
- break;
- case 'SMask':
- if (this.current.activeSMask) {
- this.endSMaskGroup();
- }
- this.current.activeSMask = value ? this.tempSMask : null;
- if (this.current.activeSMask) {
- this.beginSMaskGroup();
- }
- this.tempSMask = null;
- break;
- }
- }
- },
- beginSMaskGroup: function CanvasGraphics_beginSMaskGroup() {
-
- var activeSMask = this.current.activeSMask;
- var drawnWidth = activeSMask.canvas.width;
- var drawnHeight = activeSMask.canvas.height;
- var cacheId = 'smaskGroupAt' + this.groupLevel;
- var scratchCanvas = CachedCanvases.getCanvas(
- cacheId, drawnWidth, drawnHeight, true);
-
- var currentCtx = this.ctx;
- var currentTransform = currentCtx.mozCurrentTransform;
- this.ctx.save();
-
- var groupCtx = scratchCanvas.context;
- groupCtx.scale(1 / activeSMask.scaleX, 1 / activeSMask.scaleY);
- groupCtx.translate(-activeSMask.offsetX, -activeSMask.offsetY);
- groupCtx.transform.apply(groupCtx, currentTransform);
-
- copyCtxState(currentCtx, groupCtx);
- this.ctx = groupCtx;
- this.setGState([
- ['BM', 'Normal'],
- ['ca', 1],
- ['CA', 1]
- ]);
- this.groupStack.push(currentCtx);
- this.groupLevel++;
- },
- endSMaskGroup: function CanvasGraphics_endSMaskGroup() {
- var groupCtx = this.ctx;
- this.groupLevel--;
- this.ctx = this.groupStack.pop();
-
- composeSMask(this.ctx, this.current.activeSMask, groupCtx);
- this.ctx.restore();
- },
- save: function CanvasGraphics_save() {
- this.ctx.save();
- var old = this.current;
- this.stateStack.push(old);
- this.current = old.clone();
- if (this.current.activeSMask) {
- this.current.activeSMask = null;
- }
- },
- restore: function CanvasGraphics_restore() {
- var prev = this.stateStack.pop();
- if (prev) {
- if (this.current.activeSMask) {
- this.endSMaskGroup();
- }
-
- this.current = prev;
- this.ctx.restore();
- }
- },
- transform: function CanvasGraphics_transform(a, b, c, d, e, f) {
- this.ctx.transform(a, b, c, d, e, f);
- },
-
- // Path
- constructPath: function CanvasGraphics_constructPath(ops, args) {
- var ctx = this.ctx;
- var current = this.current;
- var x = current.x, y = current.y;
- for (var i = 0, j = 0, ii = ops.length; i < ii; i++) {
- switch (ops[i] | 0) {
- case OPS.moveTo:
- x = args[j++];
- y = args[j++];
- ctx.moveTo(x, y);
- break;
- case OPS.lineTo:
- x = args[j++];
- y = args[j++];
- ctx.lineTo(x, y);
- break;
- case OPS.curveTo:
- x = args[j + 4];
- y = args[j + 5];
- ctx.bezierCurveTo(args[j], args[j + 1], args[j + 2], args[j + 3],
- x, y);
- j += 6;
- break;
- case OPS.curveTo2:
- ctx.bezierCurveTo(x, y, args[j], args[j + 1],
- args[j + 2], args[j + 3]);
- x = args[j + 2];
- y = args[j + 3];
- j += 4;
- break;
- case OPS.curveTo3:
- x = args[j + 2];
- y = args[j + 3];
- ctx.bezierCurveTo(args[j], args[j + 1], x, y, x, y);
- j += 4;
- break;
- case OPS.closePath:
- ctx.closePath();
- break;
- }
- }
- current.setCurrentPoint(x, y);
- },
- closePath: function CanvasGraphics_closePath() {
- this.ctx.closePath();
- },
- rectangle: function CanvasGraphics_rectangle(x, y, width, height) {
- if (width === 0) {
- width = this.getSinglePixelWidth();
- }
- if (height === 0) {
- height = this.getSinglePixelWidth();
- }
-
- this.ctx.rect(x, y, width, height);
- },
- stroke: function CanvasGraphics_stroke(consumePath) {
- consumePath = typeof consumePath !== 'undefined' ? consumePath : true;
- var ctx = this.ctx;
- var strokeColor = this.current.strokeColor;
- if (this.current.lineWidth === 0) {
- ctx.lineWidth = this.getSinglePixelWidth();
- }
- // For stroke we want to temporarily change the global alpha to the
- // stroking alpha.
- ctx.globalAlpha = this.current.strokeAlpha;
- if (strokeColor && strokeColor.hasOwnProperty('type') &&
- strokeColor.type === 'Pattern') {
- // for patterns, we transform to pattern space, calculate
- // the pattern, call stroke, and restore to user space
- ctx.save();
- ctx.strokeStyle = strokeColor.getPattern(ctx, this);
- ctx.stroke();
- ctx.restore();
- } else {
- ctx.stroke();
- }
- if (consumePath) {
- this.consumePath();
- }
- // Restore the global alpha to the fill alpha
- ctx.globalAlpha = this.current.fillAlpha;
- },
- closeStroke: function CanvasGraphics_closeStroke() {
- this.closePath();
- this.stroke();
- },
- fill: function CanvasGraphics_fill(consumePath) {
- consumePath = typeof consumePath !== 'undefined' ? consumePath : true;
- var ctx = this.ctx;
- var fillColor = this.current.fillColor;
- var needRestore = false;
-
- if (fillColor && fillColor.hasOwnProperty('type') &&
- fillColor.type === 'Pattern') {
- ctx.save();
- ctx.fillStyle = fillColor.getPattern(ctx, this);
- needRestore = true;
- }
-
- if (this.pendingEOFill) {
- if (ctx.mozFillRule !== undefined) {
- ctx.mozFillRule = 'evenodd';
- ctx.fill();
- ctx.mozFillRule = 'nonzero';
- } else {
- try {
- ctx.fill('evenodd');
- } catch (ex) {
- // shouldn't really happen, but browsers might think differently
- ctx.fill();
- }
- }
- this.pendingEOFill = false;
- } else {
- ctx.fill();
- }
-
- if (needRestore) {
- ctx.restore();
- }
- if (consumePath) {
- this.consumePath();
- }
- },
- eoFill: function CanvasGraphics_eoFill() {
- this.pendingEOFill = true;
- this.fill();
- },
- fillStroke: function CanvasGraphics_fillStroke() {
- this.fill(false);
- this.stroke(false);
-
- this.consumePath();
- },
- eoFillStroke: function CanvasGraphics_eoFillStroke() {
- this.pendingEOFill = true;
- this.fillStroke();
- },
- closeFillStroke: function CanvasGraphics_closeFillStroke() {
- this.closePath();
- this.fillStroke();
- },
- closeEOFillStroke: function CanvasGraphics_closeEOFillStroke() {
- this.pendingEOFill = true;
- this.closePath();
- this.fillStroke();
- },
- endPath: function CanvasGraphics_endPath() {
- this.consumePath();
- },
-
- // Clipping
- clip: function CanvasGraphics_clip() {
- this.pendingClip = NORMAL_CLIP;
- },
- eoClip: function CanvasGraphics_eoClip() {
- this.pendingClip = EO_CLIP;
- },
-
- // Text
- beginText: function CanvasGraphics_beginText() {
- this.current.textMatrix = IDENTITY_MATRIX;
- this.current.textMatrixScale = 1;
- this.current.x = this.current.lineX = 0;
- this.current.y = this.current.lineY = 0;
- },
- endText: function CanvasGraphics_endText() {
- var paths = this.pendingTextPaths;
- var ctx = this.ctx;
- if (paths === undefined) {
- ctx.beginPath();
- return;
- }
-
- ctx.save();
- ctx.beginPath();
- for (var i = 0; i < paths.length; i++) {
- var path = paths[i];
- ctx.setTransform.apply(ctx, path.transform);
- ctx.translate(path.x, path.y);
- path.addToPath(ctx, path.fontSize);
- }
- ctx.restore();
- ctx.clip();
- ctx.beginPath();
- delete this.pendingTextPaths;
- },
- setCharSpacing: function CanvasGraphics_setCharSpacing(spacing) {
- this.current.charSpacing = spacing;
- },
- setWordSpacing: function CanvasGraphics_setWordSpacing(spacing) {
- this.current.wordSpacing = spacing;
- },
- setHScale: function CanvasGraphics_setHScale(scale) {
- this.current.textHScale = scale / 100;
- },
- setLeading: function CanvasGraphics_setLeading(leading) {
- this.current.leading = -leading;
- },
- setFont: function CanvasGraphics_setFont(fontRefName, size) {
- var fontObj = this.commonObjs.get(fontRefName);
- var current = this.current;
-
- if (!fontObj) {
- error('Can\'t find font for ' + fontRefName);
- }
-
- current.fontMatrix = (fontObj.fontMatrix ?
- fontObj.fontMatrix : FONT_IDENTITY_MATRIX);
-
- // A valid matrix needs all main diagonal elements to be non-zero
- // This also ensures we bypass FF bugzilla bug #719844.
- if (current.fontMatrix[0] === 0 ||
- current.fontMatrix[3] === 0) {
- warn('Invalid font matrix for font ' + fontRefName);
- }
-
- // The spec for Tf (setFont) says that 'size' specifies the font 'scale',
- // and in some docs this can be negative (inverted x-y axes).
- if (size < 0) {
- size = -size;
- current.fontDirection = -1;
- } else {
- current.fontDirection = 1;
- }
-
- this.current.font = fontObj;
- this.current.fontSize = size;
-
- if (fontObj.isType3Font) {
- return; // we don't need ctx.font for Type3 fonts
- }
-
- var name = fontObj.loadedName || 'sans-serif';
- var bold = fontObj.black ? (fontObj.bold ? 'bolder' : 'bold') :
- (fontObj.bold ? 'bold' : 'normal');
-
- var italic = fontObj.italic ? 'italic' : 'normal';
- var typeface = '"' + name + '", ' + fontObj.fallbackName;
-
- // Some font backends cannot handle fonts below certain size.
- // Keeping the font at minimal size and using the fontSizeScale to change
- // the current transformation matrix before the fillText/strokeText.
- // See https://bugzilla.mozilla.org/show_bug.cgi?id=726227
- var browserFontSize = size >= MIN_FONT_SIZE ? size : MIN_FONT_SIZE;
- this.current.fontSizeScale = browserFontSize != MIN_FONT_SIZE ? 1.0 :
- size / MIN_FONT_SIZE;
-
- var rule = italic + ' ' + bold + ' ' + browserFontSize + 'px ' + typeface;
- this.ctx.font = rule;
- },
- setTextRenderingMode: function CanvasGraphics_setTextRenderingMode(mode) {
- this.current.textRenderingMode = mode;
- },
- setTextRise: function CanvasGraphics_setTextRise(rise) {
- this.current.textRise = rise;
- },
- moveText: function CanvasGraphics_moveText(x, y) {
- this.current.x = this.current.lineX += x;
- this.current.y = this.current.lineY += y;
- },
- setLeadingMoveText: function CanvasGraphics_setLeadingMoveText(x, y) {
- this.setLeading(-y);
- this.moveText(x, y);
- },
- setTextMatrix: function CanvasGraphics_setTextMatrix(a, b, c, d, e, f) {
- this.current.textMatrix = [a, b, c, d, e, f];
- this.current.textMatrixScale = Math.sqrt(a * a + b * b);
-
- this.current.x = this.current.lineX = 0;
- this.current.y = this.current.lineY = 0;
- },
- nextLine: function CanvasGraphics_nextLine() {
- this.moveText(0, this.current.leading);
- },
-
- paintChar: function CanvasGraphics_paintChar(character, x, y) {
- var ctx = this.ctx;
- var current = this.current;
- var font = current.font;
- var textRenderingMode = current.textRenderingMode;
- var fontSize = current.fontSize / current.fontSizeScale;
- var fillStrokeMode = textRenderingMode &
- TextRenderingMode.FILL_STROKE_MASK;
- var isAddToPathSet = !!(textRenderingMode &
- TextRenderingMode.ADD_TO_PATH_FLAG);
-
- var addToPath;
- if (font.disableFontFace || isAddToPathSet) {
- addToPath = font.getPathGenerator(this.commonObjs, character);
- }
-
- if (font.disableFontFace) {
- ctx.save();
- ctx.translate(x, y);
- ctx.beginPath();
- addToPath(ctx, fontSize);
- if (fillStrokeMode === TextRenderingMode.FILL ||
- fillStrokeMode === TextRenderingMode.FILL_STROKE) {
- ctx.fill();
- }
- if (fillStrokeMode === TextRenderingMode.STROKE ||
- fillStrokeMode === TextRenderingMode.FILL_STROKE) {
- ctx.stroke();
- }
- ctx.restore();
- } else {
- if (fillStrokeMode === TextRenderingMode.FILL ||
- fillStrokeMode === TextRenderingMode.FILL_STROKE) {
- ctx.fillText(character, x, y);
- }
- if (fillStrokeMode === TextRenderingMode.STROKE ||
- fillStrokeMode === TextRenderingMode.FILL_STROKE) {
- ctx.strokeText(character, x, y);
- }
- }
-
- if (isAddToPathSet) {
- var paths = this.pendingTextPaths || (this.pendingTextPaths = []);
- paths.push({
- transform: ctx.mozCurrentTransform,
- x: x,
- y: y,
- fontSize: fontSize,
- addToPath: addToPath
- });
- }
- },
-
- get isFontSubpixelAAEnabled() {
- // Checks if anti-aliasing is enabled when scaled text is painted.
- // On Windows GDI scaled fonts looks bad.
- var ctx = document.createElement('canvas').getContext('2d');
- ctx.scale(1.5, 1);
- ctx.fillText('I', 0, 10);
- var data = ctx.getImageData(0, 0, 10, 10).data;
- var enabled = false;
- for (var i = 3; i < data.length; i += 4) {
- if (data[i] > 0 && data[i] < 255) {
- enabled = true;
- break;
- }
- }
- return shadow(this, 'isFontSubpixelAAEnabled', enabled);
- },
-
- showText: function CanvasGraphics_showText(glyphs) {
- var current = this.current;
- var font = current.font;
- if (font.isType3Font) {
- return this.showType3Text(glyphs);
- }
-
- var fontSize = current.fontSize;
- if (fontSize === 0) {
- return;
- }
-
- var ctx = this.ctx;
- var fontSizeScale = current.fontSizeScale;
- var charSpacing = current.charSpacing;
- var wordSpacing = current.wordSpacing;
- var fontDirection = current.fontDirection;
- var textHScale = current.textHScale * fontDirection;
- var glyphsLength = glyphs.length;
- var vertical = font.vertical;
- var defaultVMetrics = font.defaultVMetrics;
- var widthAdvanceScale = fontSize * current.fontMatrix[0];
-
- var simpleFillText =
- current.textRenderingMode === TextRenderingMode.FILL &&
- !font.disableFontFace;
-
- ctx.save();
- ctx.transform.apply(ctx, current.textMatrix);
- ctx.translate(current.x, current.y + current.textRise);
-
- if (fontDirection > 0) {
- ctx.scale(textHScale, -1);
- } else {
- ctx.scale(textHScale, 1);
- }
-
- var lineWidth = current.lineWidth;
- var scale = current.textMatrixScale;
- if (scale === 0 || lineWidth === 0) {
- lineWidth = this.getSinglePixelWidth();
- } else {
- lineWidth /= scale;
- }
-
- if (fontSizeScale != 1.0) {
- ctx.scale(fontSizeScale, fontSizeScale);
- lineWidth /= fontSizeScale;
- }
-
- ctx.lineWidth = lineWidth;
-
- var x = 0, i;
- for (i = 0; i < glyphsLength; ++i) {
- var glyph = glyphs[i];
- if (glyph === null) {
- // word break
- x += fontDirection * wordSpacing;
- continue;
- } else if (isNum(glyph)) {
- x += -glyph * fontSize * 0.001;
- continue;
- }
-
- var restoreNeeded = false;
- var character = glyph.fontChar;
- var accent = glyph.accent;
- var scaledX, scaledY, scaledAccentX, scaledAccentY;
- var width = glyph.width;
- if (vertical) {
- var vmetric, vx, vy;
- vmetric = glyph.vmetric || defaultVMetrics;
- vx = glyph.vmetric ? vmetric[1] : width * 0.5;
- vx = -vx * widthAdvanceScale;
- vy = vmetric[2] * widthAdvanceScale;
-
- width = vmetric ? -vmetric[0] : width;
- scaledX = vx / fontSizeScale;
- scaledY = (x + vy) / fontSizeScale;
- } else {
- scaledX = x / fontSizeScale;
- scaledY = 0;
- }
-
- if (font.remeasure && width > 0 && this.isFontSubpixelAAEnabled) {
- // some standard fonts may not have the exact width, trying to
- // rescale per character
- var measuredWidth = ctx.measureText(character).width * 1000 /
- fontSize * fontSizeScale;
- var characterScaleX = width / measuredWidth;
- restoreNeeded = true;
- ctx.save();
- ctx.scale(characterScaleX, 1);
- scaledX /= characterScaleX;
- }
-
- if (simpleFillText && !accent) {
- // common case
- ctx.fillText(character, scaledX, scaledY);
- } else {
- this.paintChar(character, scaledX, scaledY);
- if (accent) {
- scaledAccentX = scaledX + accent.offset.x / fontSizeScale;
- scaledAccentY = scaledY - accent.offset.y / fontSizeScale;
- this.paintChar(accent.fontChar, scaledAccentX, scaledAccentY);
- }
- }
-
- var charWidth = width * widthAdvanceScale + charSpacing * fontDirection;
- x += charWidth;
-
- if (restoreNeeded) {
- ctx.restore();
- }
- }
- if (vertical) {
- current.y -= x * textHScale;
- } else {
- current.x += x * textHScale;
- }
- ctx.restore();
- },
-
- showType3Text: function CanvasGraphics_showType3Text(glyphs) {
- // Type3 fonts - each glyph is a "mini-PDF"
- var ctx = this.ctx;
- var current = this.current;
- var font = current.font;
- var fontSize = current.fontSize;
- var fontDirection = current.fontDirection;
- var charSpacing = current.charSpacing;
- var wordSpacing = current.wordSpacing;
- var textHScale = current.textHScale * fontDirection;
- var fontMatrix = current.fontMatrix || FONT_IDENTITY_MATRIX;
- var glyphsLength = glyphs.length;
- var i, glyph, width;
-
- if (fontSize === 0) {
- return;
- }
-
- ctx.save();
- ctx.transform.apply(ctx, current.textMatrix);
- ctx.translate(current.x, current.y);
-
- ctx.scale(textHScale, 1);
-
- for (i = 0; i < glyphsLength; ++i) {
- glyph = glyphs[i];
- if (glyph === null) {
- // word break
- this.ctx.translate(wordSpacing, 0);
- current.x += wordSpacing * textHScale;
- continue;
- } else if (isNum(glyph)) {
- var spacingLength = -glyph * 0.001 * fontSize;
- this.ctx.translate(spacingLength, 0);
- current.x += spacingLength * textHScale;
- continue;
- }
-
- this.processingType3 = glyph;
- this.save();
- ctx.scale(fontSize, fontSize);
- ctx.transform.apply(ctx, fontMatrix);
- var operatorList = font.charProcOperatorList[glyph.operatorListId];
- this.executeOperatorList(operatorList);
- this.restore();
-
- var transformed = Util.applyTransform([glyph.width, 0], fontMatrix);
- width = ((transformed[0] * fontSize + charSpacing) * fontDirection);
-
- ctx.translate(width, 0);
- current.x += width * textHScale;
- }
- ctx.restore();
- this.processingType3 = null;
- },
-
- // Type3 fonts
- setCharWidth: function CanvasGraphics_setCharWidth(xWidth, yWidth) {
- // We can safely ignore this since the width should be the same
- // as the width in the Widths array.
- },
- setCharWidthAndBounds: function CanvasGraphics_setCharWidthAndBounds(xWidth,
- yWidth,
- llx,
- lly,
- urx,
- ury) {
- // TODO According to the spec we're also suppose to ignore any operators
- // that set color or include images while processing this type3 font.
- this.rectangle(llx, lly, urx - llx, ury - lly);
- this.clip();
- this.endPath();
- },
-
- // Color
- getColorN_Pattern: function CanvasGraphics_getColorN_Pattern(IR) {
- var pattern;
- if (IR[0] == 'TilingPattern') {
- var color = IR[1];
- pattern = new TilingPattern(IR, color, this.ctx, this.objs,
- this.commonObjs, this.baseTransform);
- } else {
- pattern = getShadingPatternFromIR(IR);
- }
- return pattern;
- },
- setStrokeColorN: function CanvasGraphics_setStrokeColorN(/*...*/) {
- this.current.strokeColor = this.getColorN_Pattern(arguments);
- },
- setFillColorN: function CanvasGraphics_setFillColorN(/*...*/) {
- this.current.fillColor = this.getColorN_Pattern(arguments);
- },
- setStrokeRGBColor: function CanvasGraphics_setStrokeRGBColor(r, g, b) {
- var color = Util.makeCssRgb(arguments);
- this.ctx.strokeStyle = color;
- this.current.strokeColor = color;
- },
- setFillRGBColor: function CanvasGraphics_setFillRGBColor(r, g, b) {
- var color = Util.makeCssRgb(arguments);
- this.ctx.fillStyle = color;
- this.current.fillColor = color;
- },
-
- shadingFill: function CanvasGraphics_shadingFill(patternIR) {
- var ctx = this.ctx;
-
- this.save();
- var pattern = getShadingPatternFromIR(patternIR);
- ctx.fillStyle = pattern.getPattern(ctx, this, true);
-
- var inv = ctx.mozCurrentTransformInverse;
- if (inv) {
- var canvas = ctx.canvas;
- var width = canvas.width;
- var height = canvas.height;
-
- var bl = Util.applyTransform([0, 0], inv);
- var br = Util.applyTransform([0, height], inv);
- var ul = Util.applyTransform([width, 0], inv);
- var ur = Util.applyTransform([width, height], inv);
-
- var x0 = Math.min(bl[0], br[0], ul[0], ur[0]);
- var y0 = Math.min(bl[1], br[1], ul[1], ur[1]);
- var x1 = Math.max(bl[0], br[0], ul[0], ur[0]);
- var y1 = Math.max(bl[1], br[1], ul[1], ur[1]);
-
- this.ctx.fillRect(x0, y0, x1 - x0, y1 - y0);
- } else {
- // HACK to draw the gradient onto an infinite rectangle.
- // PDF gradients are drawn across the entire image while
- // Canvas only allows gradients to be drawn in a rectangle
- // The following bug should allow us to remove this.
- // https://bugzilla.mozilla.org/show_bug.cgi?id=664884
-
- this.ctx.fillRect(-1e10, -1e10, 2e10, 2e10);
- }
-
- this.restore();
- },
-
- // Images
- beginInlineImage: function CanvasGraphics_beginInlineImage() {
- error('Should not call beginInlineImage');
- },
- beginImageData: function CanvasGraphics_beginImageData() {
- error('Should not call beginImageData');
- },
-
- paintFormXObjectBegin: function CanvasGraphics_paintFormXObjectBegin(matrix,
- bbox) {
- this.save();
- this.baseTransformStack.push(this.baseTransform);
-
- if (matrix && isArray(matrix) && 6 == matrix.length) {
- this.transform.apply(this, matrix);
- }
-
- this.baseTransform = this.ctx.mozCurrentTransform;
-
- if (bbox && isArray(bbox) && 4 == bbox.length) {
- var width = bbox[2] - bbox[0];
- var height = bbox[3] - bbox[1];
- this.rectangle(bbox[0], bbox[1], width, height);
- this.clip();
- this.endPath();
- }
- },
-
- paintFormXObjectEnd: function CanvasGraphics_paintFormXObjectEnd() {
- this.restore();
- this.baseTransform = this.baseTransformStack.pop();
- },
-
- beginGroup: function CanvasGraphics_beginGroup(group) {
- this.save();
- var currentCtx = this.ctx;
- // TODO non-isolated groups - according to Rik at adobe non-isolated
- // group results aren't usually that different and they even have tools
- // that ignore this setting. Notes from Rik on implmenting:
- // - When you encounter an transparency group, create a new canvas with
- // the dimensions of the bbox
- // - copy the content from the previous canvas to the new canvas
- // - draw as usual
- // - remove the backdrop alpha:
- // alphaNew = 1 - (1 - alpha)/(1 - alphaBackdrop) with 'alpha' the alpha
- // value of your transparency group and 'alphaBackdrop' the alpha of the
- // backdrop
- // - remove background color:
- // colorNew = color - alphaNew *colorBackdrop /(1 - alphaNew)
- if (!group.isolated) {
- info('TODO: Support non-isolated groups.');
- }
-
- // TODO knockout - supposedly possible with the clever use of compositing
- // modes.
- if (group.knockout) {
- warn('Knockout groups not supported.');
- }
-
- var currentTransform = currentCtx.mozCurrentTransform;
- if (group.matrix) {
- currentCtx.transform.apply(currentCtx, group.matrix);
- }
- assert(group.bbox, 'Bounding box is required.');
-
- // Based on the current transform figure out how big the bounding box
- // will actually be.
- var bounds = Util.getAxialAlignedBoundingBox(
- group.bbox,
- currentCtx.mozCurrentTransform);
- // Clip the bounding box to the current canvas.
- var canvasBounds = [0,
- 0,
- currentCtx.canvas.width,
- currentCtx.canvas.height];
- bounds = Util.intersect(bounds, canvasBounds) || [0, 0, 0, 0];
- // Use ceil in case we're between sizes so we don't create canvas that is
- // too small and make the canvas at least 1x1 pixels.
- var offsetX = Math.floor(bounds[0]);
- var offsetY = Math.floor(bounds[1]);
- var drawnWidth = Math.max(Math.ceil(bounds[2]) - offsetX, 1);
- var drawnHeight = Math.max(Math.ceil(bounds[3]) - offsetY, 1);
- var scaleX = 1, scaleY = 1;
- if (drawnWidth > MAX_GROUP_SIZE) {
- scaleX = drawnWidth / MAX_GROUP_SIZE;
- drawnWidth = MAX_GROUP_SIZE;
- }
- if (drawnHeight > MAX_GROUP_SIZE) {
- scaleY = drawnHeight / MAX_GROUP_SIZE;
- drawnHeight = MAX_GROUP_SIZE;
- }
-
- var cacheId = 'groupAt' + this.groupLevel;
- if (group.smask) {
- // Using two cache entries is case if masks are used one after another.
- cacheId += '_smask_' + ((this.smaskCounter++) % 2);
- }
- var scratchCanvas = CachedCanvases.getCanvas(
- cacheId, drawnWidth, drawnHeight, true);
- var groupCtx = scratchCanvas.context;
-
- // Since we created a new canvas that is just the size of the bounding box
- // we have to translate the group ctx.
- groupCtx.scale(1 / scaleX, 1 / scaleY);
- groupCtx.translate(-offsetX, -offsetY);
- groupCtx.transform.apply(groupCtx, currentTransform);
-
- if (group.smask) {
- // Saving state and cached mask to be used in setGState.
- this.smaskStack.push({
- canvas: scratchCanvas.canvas,
- context: groupCtx,
- offsetX: offsetX,
- offsetY: offsetY,
- scaleX: scaleX,
- scaleY: scaleY,
- subtype: group.smask.subtype,
- backdrop: group.smask.backdrop
- });
- } else {
- // Setup the current ctx so when the group is popped we draw it at the
- // right location.
- currentCtx.setTransform(1, 0, 0, 1, 0, 0);
- currentCtx.translate(offsetX, offsetY);
- currentCtx.scale(scaleX, scaleY);
- }
- // The transparency group inherits all off the current graphics state
- // except the blend mode, soft mask, and alpha constants.
- copyCtxState(currentCtx, groupCtx);
- this.ctx = groupCtx;
- this.setGState([
- ['BM', 'Normal'],
- ['ca', 1],
- ['CA', 1]
- ]);
- this.groupStack.push(currentCtx);
- this.groupLevel++;
- },
-
- endGroup: function CanvasGraphics_endGroup(group) {
- this.groupLevel--;
- var groupCtx = this.ctx;
- this.ctx = this.groupStack.pop();
- // Turn off image smoothing to avoid sub pixel interpolation which can
- // look kind of blurry for some pdfs.
- if (this.ctx.imageSmoothingEnabled !== undefined) {
- this.ctx.imageSmoothingEnabled = false;
- } else {
- this.ctx.mozImageSmoothingEnabled = false;
- }
- if (group.smask) {
- this.tempSMask = this.smaskStack.pop();
- } else {
- this.ctx.drawImage(groupCtx.canvas, 0, 0);
- }
- this.restore();
- },
-
- beginAnnotations: function CanvasGraphics_beginAnnotations() {
- this.save();
- this.current = new CanvasExtraState();
- },
-
- endAnnotations: function CanvasGraphics_endAnnotations() {
- this.restore();
- },
-
- beginAnnotation: function CanvasGraphics_beginAnnotation(rect, transform,
- matrix) {
- this.save();
-
- if (rect && isArray(rect) && 4 == rect.length) {
- var width = rect[2] - rect[0];
- var height = rect[3] - rect[1];
- this.rectangle(rect[0], rect[1], width, height);
- this.clip();
- this.endPath();
- }
-
- this.transform.apply(this, transform);
- this.transform.apply(this, matrix);
- },
-
- endAnnotation: function CanvasGraphics_endAnnotation() {
- this.restore();
- },
-
- paintJpegXObject: function CanvasGraphics_paintJpegXObject(objId, w, h) {
- var domImage = this.objs.get(objId);
- if (!domImage) {
- warn('Dependent image isn\'t ready yet');
- return;
- }
-
- this.save();
-
- var ctx = this.ctx;
- // scale the image to the unit square
- ctx.scale(1 / w, -1 / h);
-
- ctx.drawImage(domImage, 0, 0, domImage.width, domImage.height,
- 0, -h, w, h);
- if (this.imageLayer) {
- var currentTransform = ctx.mozCurrentTransformInverse;
- var position = this.getCanvasPosition(0, 0);
- this.imageLayer.appendImage({
- objId: objId,
- left: position[0],
- top: position[1],
- width: w / currentTransform[0],
- height: h / currentTransform[3]
- });
- }
- this.restore();
- },
-
- paintImageMaskXObject: function CanvasGraphics_paintImageMaskXObject(img) {
- var ctx = this.ctx;
- var width = img.width, height = img.height;
-
- var glyph = this.processingType3;
-
- if (COMPILE_TYPE3_GLYPHS && glyph && !('compiled' in glyph)) {
- var MAX_SIZE_TO_COMPILE = 1000;
- if (width <= MAX_SIZE_TO_COMPILE && height <= MAX_SIZE_TO_COMPILE) {
- glyph.compiled =
- compileType3Glyph({data: img.data, width: width, height: height});
- } else {
- glyph.compiled = null;
- }
- }
-
- if (glyph && glyph.compiled) {
- glyph.compiled(ctx);
- return;
- }
-
- var maskCanvas = CachedCanvases.getCanvas('maskCanvas', width, height);
- var maskCtx = maskCanvas.context;
- maskCtx.save();
-
- putBinaryImageMask(maskCtx, img);
-
- maskCtx.globalCompositeOperation = 'source-in';
-
- var fillColor = this.current.fillColor;
- maskCtx.fillStyle = (fillColor && fillColor.hasOwnProperty('type') &&
- fillColor.type === 'Pattern') ?
- fillColor.getPattern(maskCtx, this) : fillColor;
- maskCtx.fillRect(0, 0, width, height);
-
- maskCtx.restore();
-
- this.paintInlineImageXObject(maskCanvas.canvas);
- },
-
- paintImageMaskXObjectRepeat:
- function CanvasGraphics_paintImageMaskXObjectRepeat(imgData, scaleX,
- scaleY, positions) {
- var width = imgData.width;
- var height = imgData.height;
- var ctx = this.ctx;
-
- var maskCanvas = CachedCanvases.getCanvas('maskCanvas', width, height);
- var maskCtx = maskCanvas.context;
- maskCtx.save();
-
- putBinaryImageMask(maskCtx, imgData);
-
- maskCtx.globalCompositeOperation = 'source-in';
-
- var fillColor = this.current.fillColor;
- maskCtx.fillStyle = (fillColor && fillColor.hasOwnProperty('type') &&
- fillColor.type === 'Pattern') ?
- fillColor.getPattern(maskCtx, this) : fillColor;
- maskCtx.fillRect(0, 0, width, height);
-
- maskCtx.restore();
-
- for (var i = 0, ii = positions.length; i < ii; i += 2) {
- ctx.save();
- ctx.transform(scaleX, 0, 0, scaleY, positions[i], positions[i + 1]);
- ctx.scale(1, -1);
- ctx.drawImage(maskCanvas.canvas, 0, 0, width, height,
- 0, -1, 1, 1);
- ctx.restore();
- }
- },
-
- paintImageMaskXObjectGroup:
- function CanvasGraphics_paintImageMaskXObjectGroup(images) {
- var ctx = this.ctx;
-
- for (var i = 0, ii = images.length; i < ii; i++) {
- var image = images[i];
- var width = image.width, height = image.height;
-
- var maskCanvas = CachedCanvases.getCanvas('maskCanvas', width, height);
- var maskCtx = maskCanvas.context;
- maskCtx.save();
-
- putBinaryImageMask(maskCtx, image);
-
- maskCtx.globalCompositeOperation = 'source-in';
-
- var fillColor = this.current.fillColor;
- maskCtx.fillStyle = (fillColor && fillColor.hasOwnProperty('type') &&
- fillColor.type === 'Pattern') ?
- fillColor.getPattern(maskCtx, this) : fillColor;
- maskCtx.fillRect(0, 0, width, height);
-
- maskCtx.restore();
-
- ctx.save();
- ctx.transform.apply(ctx, image.transform);
- ctx.scale(1, -1);
- ctx.drawImage(maskCanvas.canvas, 0, 0, width, height,
- 0, -1, 1, 1);
- ctx.restore();
- }
- },
-
- paintImageXObject: function CanvasGraphics_paintImageXObject(objId) {
- var imgData = this.objs.get(objId);
- if (!imgData) {
- warn('Dependent image isn\'t ready yet');
- return;
- }
-
- this.paintInlineImageXObject(imgData);
- },
-
- paintImageXObjectRepeat:
- function CanvasGraphics_paintImageXObjectRepeat(objId, scaleX, scaleY,
- positions) {
- var imgData = this.objs.get(objId);
- if (!imgData) {
- warn('Dependent image isn\'t ready yet');
- return;
- }
-
- var width = imgData.width;
- var height = imgData.height;
- var map = [];
- for (var i = 0, ii = positions.length; i < ii; i += 2) {
- map.push({transform: [scaleX, 0, 0, scaleY, positions[i],
- positions[i + 1]], x: 0, y: 0, w: width, h: height});
- }
- this.paintInlineImageXObjectGroup(imgData, map);
- },
-
- paintInlineImageXObject:
- function CanvasGraphics_paintInlineImageXObject(imgData) {
- var width = imgData.width;
- var height = imgData.height;
- var ctx = this.ctx;
-
- this.save();
- // scale the image to the unit square
- ctx.scale(1 / width, -1 / height);
-
- var currentTransform = ctx.mozCurrentTransformInverse;
- var a = currentTransform[0], b = currentTransform[1];
- var widthScale = Math.max(Math.sqrt(a * a + b * b), 1);
- var c = currentTransform[2], d = currentTransform[3];
- var heightScale = Math.max(Math.sqrt(c * c + d * d), 1);
-
- var imgToPaint, tmpCanvas;
- // instanceof HTMLElement does not work in jsdom node.js module
- if (imgData instanceof HTMLElement || !imgData.data) {
- imgToPaint = imgData;
- } else {
- tmpCanvas = CachedCanvases.getCanvas('inlineImage', width, height);
- var tmpCtx = tmpCanvas.context;
- putBinaryImageData(tmpCtx, imgData);
- imgToPaint = tmpCanvas.canvas;
- }
-
- var paintWidth = width, paintHeight = height;
- var tmpCanvasId = 'prescale1';
- // Vertial or horizontal scaling shall not be more than 2 to not loose the
- // pixels during drawImage operation, painting on the temporary canvas(es)
- // that are twice smaller in size
- while ((widthScale > 2 && paintWidth > 1) ||
- (heightScale > 2 && paintHeight > 1)) {
- var newWidth = paintWidth, newHeight = paintHeight;
- if (widthScale > 2 && paintWidth > 1) {
- newWidth = Math.ceil(paintWidth / 2);
- widthScale /= paintWidth / newWidth;
- }
- if (heightScale > 2 && paintHeight > 1) {
- newHeight = Math.ceil(paintHeight / 2);
- heightScale /= paintHeight / newHeight;
- }
- tmpCanvas = CachedCanvases.getCanvas(tmpCanvasId, newWidth, newHeight);
- tmpCtx = tmpCanvas.context;
- tmpCtx.clearRect(0, 0, newWidth, newHeight);
- tmpCtx.drawImage(imgToPaint, 0, 0, paintWidth, paintHeight,
- 0, 0, newWidth, newHeight);
- imgToPaint = tmpCanvas.canvas;
- paintWidth = newWidth;
- paintHeight = newHeight;
- tmpCanvasId = tmpCanvasId === 'prescale1' ? 'prescale2' : 'prescale1';
- }
- ctx.drawImage(imgToPaint, 0, 0, paintWidth, paintHeight,
- 0, -height, width, height);
-
- if (this.imageLayer) {
- var position = this.getCanvasPosition(0, -height);
- this.imageLayer.appendImage({
- imgData: imgData,
- left: position[0],
- top: position[1],
- width: width / currentTransform[0],
- height: height / currentTransform[3]
- });
- }
- this.restore();
- },
-
- paintInlineImageXObjectGroup:
- function CanvasGraphics_paintInlineImageXObjectGroup(imgData, map) {
- var ctx = this.ctx;
- var w = imgData.width;
- var h = imgData.height;
-
- var tmpCanvas = CachedCanvases.getCanvas('inlineImage', w, h);
- var tmpCtx = tmpCanvas.context;
- putBinaryImageData(tmpCtx, imgData);
-
- for (var i = 0, ii = map.length; i < ii; i++) {
- var entry = map[i];
- ctx.save();
- ctx.transform.apply(ctx, entry.transform);
- ctx.scale(1, -1);
- ctx.drawImage(tmpCanvas.canvas, entry.x, entry.y, entry.w, entry.h,
- 0, -1, 1, 1);
- if (this.imageLayer) {
- var position = this.getCanvasPosition(entry.x, entry.y);
- this.imageLayer.appendImage({
- imgData: imgData,
- left: position[0],
- top: position[1],
- width: w,
- height: h
- });
- }
- ctx.restore();
- }
- },
-
- paintSolidColorImageMask:
- function CanvasGraphics_paintSolidColorImageMask() {
- this.ctx.fillRect(0, 0, 1, 1);
- },
-
- // Marked content
-
- markPoint: function CanvasGraphics_markPoint(tag) {
- // TODO Marked content.
- },
- markPointProps: function CanvasGraphics_markPointProps(tag, properties) {
- // TODO Marked content.
- },
- beginMarkedContent: function CanvasGraphics_beginMarkedContent(tag) {
- // TODO Marked content.
- },
- beginMarkedContentProps: function CanvasGraphics_beginMarkedContentProps(
- tag, properties) {
- // TODO Marked content.
- },
- endMarkedContent: function CanvasGraphics_endMarkedContent() {
- // TODO Marked content.
- },
-
- // Compatibility
-
- beginCompat: function CanvasGraphics_beginCompat() {
- // TODO ignore undefined operators (should we do that anyway?)
- },
- endCompat: function CanvasGraphics_endCompat() {
- // TODO stop ignoring undefined operators
- },
-
- // Helper functions
-
- consumePath: function CanvasGraphics_consumePath() {
- var ctx = this.ctx;
- if (this.pendingClip) {
- if (this.pendingClip == EO_CLIP) {
- if (ctx.mozFillRule !== undefined) {
- ctx.mozFillRule = 'evenodd';
- ctx.clip();
- ctx.mozFillRule = 'nonzero';
- } else {
- try {
- ctx.clip('evenodd');
- } catch (ex) {
- // shouldn't really happen, but browsers might think differently
- ctx.clip();
- }
- }
- } else {
- ctx.clip();
- }
- this.pendingClip = null;
- }
- ctx.beginPath();
- },
- getSinglePixelWidth: function CanvasGraphics_getSinglePixelWidth(scale) {
- var inverse = this.ctx.mozCurrentTransformInverse;
- // max of the current horizontal and vertical scale
- return Math.sqrt(Math.max(
- (inverse[0] * inverse[0] + inverse[1] * inverse[1]),
- (inverse[2] * inverse[2] + inverse[3] * inverse[3])));
- },
- getCanvasPosition: function CanvasGraphics_getCanvasPosition(x, y) {
- var transform = this.ctx.mozCurrentTransform;
- return [
- transform[0] * x + transform[2] * y + transform[4],
- transform[1] * x + transform[3] * y + transform[5]
- ];
- }
- };
-
- for (var op in OPS) {
- CanvasGraphics.prototype[OPS[op]] = CanvasGraphics.prototype[op];
- }
-
- return CanvasGraphics;
-})();
-
-
-
-var WebGLUtils = (function WebGLUtilsClosure() {
- function loadShader(gl, code, shaderType) {
- var shader = gl.createShader(shaderType);
- gl.shaderSource(shader, code);
- gl.compileShader(shader);
- var compiled = gl.getShaderParameter(shader, gl.COMPILE_STATUS);
- if (!compiled) {
- var errorMsg = gl.getShaderInfoLog(shader);
- throw new Error('Error during shader compilation: ' + errorMsg);
- }
- return shader;
- }
- function createVertexShader(gl, code) {
- return loadShader(gl, code, gl.VERTEX_SHADER);
- }
- function createFragmentShader(gl, code) {
- return loadShader(gl, code, gl.FRAGMENT_SHADER);
- }
- function createProgram(gl, shaders) {
- var program = gl.createProgram();
- for (var i = 0, ii = shaders.length; i < ii; ++i) {
- gl.attachShader(program, shaders[i]);
- }
- gl.linkProgram(program);
- var linked = gl.getProgramParameter(program, gl.LINK_STATUS);
- if (!linked) {
- var errorMsg = gl.getProgramInfoLog(program);
- throw new Error('Error during program linking: ' + errorMsg);
- }
- return program;
- }
- function createTexture(gl, image, textureId) {
- gl.activeTexture(textureId);
- var texture = gl.createTexture();
- gl.bindTexture(gl.TEXTURE_2D, texture);
-
- // Set the parameters so we can render any size image.
- gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
- gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
- gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
- gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
-
- // Upload the image into the texture.
- gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, image);
- return texture;
- }
-
- var currentGL, currentCanvas;
- function generageGL() {
- if (currentGL) {
- return;
- }
- currentCanvas = document.createElement('canvas');
- currentGL = currentCanvas.getContext('webgl',
- { premultipliedalpha: false });
- }
-
- var smaskVertexShaderCode = '\
- attribute vec2 a_position; \
- attribute vec2 a_texCoord; \
- \
- uniform vec2 u_resolution; \
- \
- varying vec2 v_texCoord; \
- \
- void main() { \
- vec2 clipSpace = (a_position / u_resolution) * 2.0 - 1.0; \
- gl_Position = vec4(clipSpace * vec2(1, -1), 0, 1); \
- \
- v_texCoord = a_texCoord; \
- } ';
-
- var smaskFragmentShaderCode = '\
- precision mediump float; \
- \
- uniform vec4 u_backdrop; \
- uniform int u_subtype; \
- uniform sampler2D u_image; \
- uniform sampler2D u_mask; \
- \
- varying vec2 v_texCoord; \
- \
- void main() { \
- vec4 imageColor = texture2D(u_image, v_texCoord); \
- vec4 maskColor = texture2D(u_mask, v_texCoord); \
- if (u_backdrop.a > 0.0) { \
- maskColor.rgb = maskColor.rgb * maskColor.a + \
- u_backdrop.rgb * (1.0 - maskColor.a); \
- } \
- float lum; \
- if (u_subtype == 0) { \
- lum = maskColor.a; \
- } else { \
- lum = maskColor.r * 0.3 + maskColor.g * 0.59 + \
- maskColor.b * 0.11; \
- } \
- imageColor.a *= lum; \
- imageColor.rgb *= imageColor.a; \
- gl_FragColor = imageColor; \
- } ';
-
- var smaskCache = null;
-
- function initSmaskGL() {
- var canvas, gl;
-
- generageGL();
- canvas = currentCanvas;
- currentCanvas = null;
- gl = currentGL;
- currentGL = null;
-
- // setup a GLSL program
- var vertexShader = createVertexShader(gl, smaskVertexShaderCode);
- var fragmentShader = createFragmentShader(gl, smaskFragmentShaderCode);
- var program = createProgram(gl, [vertexShader, fragmentShader]);
- gl.useProgram(program);
-
- var cache = {};
- cache.gl = gl;
- cache.canvas = canvas;
- cache.resolutionLocation = gl.getUniformLocation(program, 'u_resolution');
- cache.positionLocation = gl.getAttribLocation(program, 'a_position');
- cache.backdropLocation = gl.getUniformLocation(program, 'u_backdrop');
- cache.subtypeLocation = gl.getUniformLocation(program, 'u_subtype');
-
- var texCoordLocation = gl.getAttribLocation(program, 'a_texCoord');
- var texLayerLocation = gl.getUniformLocation(program, 'u_image');
- var texMaskLocation = gl.getUniformLocation(program, 'u_mask');
-
- // provide texture coordinates for the rectangle.
- var texCoordBuffer = gl.createBuffer();
- gl.bindBuffer(gl.ARRAY_BUFFER, texCoordBuffer);
- gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([
- 0.0, 0.0,
- 1.0, 0.0,
- 0.0, 1.0,
- 0.0, 1.0,
- 1.0, 0.0,
- 1.0, 1.0]), gl.STATIC_DRAW);
- gl.enableVertexAttribArray(texCoordLocation);
- gl.vertexAttribPointer(texCoordLocation, 2, gl.FLOAT, false, 0, 0);
-
- gl.uniform1i(texLayerLocation, 0);
- gl.uniform1i(texMaskLocation, 1);
-
- smaskCache = cache;
- }
-
- function composeSMask(layer, mask, properties) {
- var width = layer.width, height = layer.height;
-
- if (!smaskCache) {
- initSmaskGL();
- }
- var cache = smaskCache,canvas = cache.canvas, gl = cache.gl;
- canvas.width = width;
- canvas.height = height;
- gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
- gl.uniform2f(cache.resolutionLocation, width, height);
-
- if (properties.backdrop) {
- gl.uniform4f(cache.resolutionLocation, properties.backdrop[0],
- properties.backdrop[1], properties.backdrop[2], 1);
- } else {
- gl.uniform4f(cache.resolutionLocation, 0, 0, 0, 0);
- }
- gl.uniform1i(cache.subtypeLocation,
- properties.subtype === 'Luminosity' ? 1 : 0);
-
- // Create a textures
- var texture = createTexture(gl, layer, gl.TEXTURE0);
- var maskTexture = createTexture(gl, mask, gl.TEXTURE1);
-
-
- // Create a buffer and put a single clipspace rectangle in
- // it (2 triangles)
- var buffer = gl.createBuffer();
- gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
- gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([
- 0, 0,
- width, 0,
- 0, height,
- 0, height,
- width, 0,
- width, height]), gl.STATIC_DRAW);
- gl.enableVertexAttribArray(cache.positionLocation);
- gl.vertexAttribPointer(cache.positionLocation, 2, gl.FLOAT, false, 0, 0);
-
- // draw
- gl.clearColor(0, 0, 0, 0);
- gl.enable(gl.BLEND);
- gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
- gl.clear(gl.COLOR_BUFFER_BIT);
-
- gl.drawArrays(gl.TRIANGLES, 0, 6);
-
- gl.flush();
-
- gl.deleteTexture(texture);
- gl.deleteTexture(maskTexture);
- gl.deleteBuffer(buffer);
-
- return canvas;
- }
-
- var figuresVertexShaderCode = '\
- attribute vec2 a_position; \
- attribute vec3 a_color; \
- \
- uniform vec2 u_resolution; \
- uniform vec2 u_scale; \
- uniform vec2 u_offset; \
- \
- varying vec4 v_color; \
- \
- void main() { \
- vec2 position = (a_position + u_offset) * u_scale; \
- vec2 clipSpace = (position / u_resolution) * 2.0 - 1.0; \
- gl_Position = vec4(clipSpace * vec2(1, -1), 0, 1); \
- \
- v_color = vec4(a_color / 255.0, 1.0); \
- } ';
-
- var figuresFragmentShaderCode = '\
- precision mediump float; \
- \
- varying vec4 v_color; \
- \
- void main() { \
- gl_FragColor = v_color; \
- } ';
-
- var figuresCache = null;
-
- function initFiguresGL() {
- var canvas, gl;
-
- generageGL();
- canvas = currentCanvas;
- currentCanvas = null;
- gl = currentGL;
- currentGL = null;
-
- // setup a GLSL program
- var vertexShader = createVertexShader(gl, figuresVertexShaderCode);
- var fragmentShader = createFragmentShader(gl, figuresFragmentShaderCode);
- var program = createProgram(gl, [vertexShader, fragmentShader]);
- gl.useProgram(program);
-
- var cache = {};
- cache.gl = gl;
- cache.canvas = canvas;
- cache.resolutionLocation = gl.getUniformLocation(program, 'u_resolution');
- cache.scaleLocation = gl.getUniformLocation(program, 'u_scale');
- cache.offsetLocation = gl.getUniformLocation(program, 'u_offset');
- cache.positionLocation = gl.getAttribLocation(program, 'a_position');
- cache.colorLocation = gl.getAttribLocation(program, 'a_color');
-
- figuresCache = cache;
- }
-
- function drawFigures(width, height, backgroundColor, figures, context) {
- if (!figuresCache) {
- initFiguresGL();
- }
- var cache = figuresCache, canvas = cache.canvas, gl = cache.gl;
-
- canvas.width = width;
- canvas.height = height;
- gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
- gl.uniform2f(cache.resolutionLocation, width, height);
-
- // count triangle points
- var count = 0;
- var i, ii, rows;
- for (i = 0, ii = figures.length; i < ii; i++) {
- switch (figures[i].type) {
- case 'lattice':
- rows = (figures[i].coords.length / figures[i].verticesPerRow) | 0;
- count += (rows - 1) * (figures[i].verticesPerRow - 1) * 6;
- break;
- case 'triangles':
- count += figures[i].coords.length;
- break;
- }
- }
- // transfer data
- var coords = new Float32Array(count * 2);
- var colors = new Uint8Array(count * 3);
- var coordsMap = context.coords, colorsMap = context.colors;
- var pIndex = 0, cIndex = 0;
- for (i = 0, ii = figures.length; i < ii; i++) {
- var figure = figures[i], ps = figure.coords, cs = figure.colors;
- switch (figure.type) {
- case 'lattice':
- var cols = figure.verticesPerRow;
- rows = (ps.length / cols) | 0;
- for (var row = 1; row < rows; row++) {
- var offset = row * cols + 1;
- for (var col = 1; col < cols; col++, offset++) {
- coords[pIndex] = coordsMap[ps[offset - cols - 1]];
- coords[pIndex + 1] = coordsMap[ps[offset - cols - 1] + 1];
- coords[pIndex + 2] = coordsMap[ps[offset - cols]];
- coords[pIndex + 3] = coordsMap[ps[offset - cols] + 1];
- coords[pIndex + 4] = coordsMap[ps[offset - 1]];
- coords[pIndex + 5] = coordsMap[ps[offset - 1] + 1];
- colors[cIndex] = colorsMap[cs[offset - cols - 1]];
- colors[cIndex + 1] = colorsMap[cs[offset - cols - 1] + 1];
- colors[cIndex + 2] = colorsMap[cs[offset - cols - 1] + 2];
- colors[cIndex + 3] = colorsMap[cs[offset - cols]];
- colors[cIndex + 4] = colorsMap[cs[offset - cols] + 1];
- colors[cIndex + 5] = colorsMap[cs[offset - cols] + 2];
- colors[cIndex + 6] = colorsMap[cs[offset - 1]];
- colors[cIndex + 7] = colorsMap[cs[offset - 1] + 1];
- colors[cIndex + 8] = colorsMap[cs[offset - 1] + 2];
-
- coords[pIndex + 6] = coords[pIndex + 2];
- coords[pIndex + 7] = coords[pIndex + 3];
- coords[pIndex + 8] = coords[pIndex + 4];
- coords[pIndex + 9] = coords[pIndex + 5];
- coords[pIndex + 10] = coordsMap[ps[offset]];
- coords[pIndex + 11] = coordsMap[ps[offset] + 1];
- colors[cIndex + 9] = colors[cIndex + 3];
- colors[cIndex + 10] = colors[cIndex + 4];
- colors[cIndex + 11] = colors[cIndex + 5];
- colors[cIndex + 12] = colors[cIndex + 6];
- colors[cIndex + 13] = colors[cIndex + 7];
- colors[cIndex + 14] = colors[cIndex + 8];
- colors[cIndex + 15] = colorsMap[cs[offset]];
- colors[cIndex + 16] = colorsMap[cs[offset] + 1];
- colors[cIndex + 17] = colorsMap[cs[offset] + 2];
- pIndex += 12;
- cIndex += 18;
- }
- }
- break;
- case 'triangles':
- for (var j = 0, jj = ps.length; j < jj; j++) {
- coords[pIndex] = coordsMap[ps[j]];
- coords[pIndex + 1] = coordsMap[ps[j] + 1];
- colors[cIndex] = colorsMap[cs[i]];
- colors[cIndex + 1] = colorsMap[cs[j] + 1];
- colors[cIndex + 2] = colorsMap[cs[j] + 2];
- pIndex += 2;
- cIndex += 3;
- }
- break;
- }
- }
-
- // draw
- if (backgroundColor) {
- gl.clearColor(backgroundColor[0] / 255, backgroundColor[1] / 255,
- backgroundColor[2] / 255, 1.0);
- } else {
- gl.clearColor(0, 0, 0, 0);
- }
- gl.clear(gl.COLOR_BUFFER_BIT);
-
- var coordsBuffer = gl.createBuffer();
- gl.bindBuffer(gl.ARRAY_BUFFER, coordsBuffer);
- gl.bufferData(gl.ARRAY_BUFFER, coords, gl.STATIC_DRAW);
- gl.enableVertexAttribArray(cache.positionLocation);
- gl.vertexAttribPointer(cache.positionLocation, 2, gl.FLOAT, false, 0, 0);
-
- var colorsBuffer = gl.createBuffer();
- gl.bindBuffer(gl.ARRAY_BUFFER, colorsBuffer);
- gl.bufferData(gl.ARRAY_BUFFER, colors, gl.STATIC_DRAW);
- gl.enableVertexAttribArray(cache.colorLocation);
- gl.vertexAttribPointer(cache.colorLocation, 3, gl.UNSIGNED_BYTE, false,
- 0, 0);
-
- gl.uniform2f(cache.scaleLocation, context.scaleX, context.scaleY);
- gl.uniform2f(cache.offsetLocation, context.offsetX, context.offsetY);
-
- gl.drawArrays(gl.TRIANGLES, 0, count);
-
- gl.flush();
-
- gl.deleteBuffer(coordsBuffer);
- gl.deleteBuffer(colorsBuffer);
-
- return canvas;
- }
-
- function cleanup() {
- smaskCache = null;
- figuresCache = null;
- }
-
- return {
- get isEnabled() {
- if (PDFJS.disableWebGL) {
- return false;
- }
- var enabled = false;
- try {
- generageGL();
- enabled = !!currentGL;
- } catch (e) { }
- return shadow(this, 'isEnabled', enabled);
- },
- composeSMask: composeSMask,
- drawFigures: drawFigures,
- clear: cleanup
- };
-})();
-
-
-var ShadingIRs = {};
-
-ShadingIRs.RadialAxial = {
- fromIR: function RadialAxial_fromIR(raw) {
- var type = raw[1];
- var colorStops = raw[2];
- var p0 = raw[3];
- var p1 = raw[4];
- var r0 = raw[5];
- var r1 = raw[6];
- return {
- type: 'Pattern',
- getPattern: function RadialAxial_getPattern(ctx) {
- var grad;
- if (type === 'axial') {
- grad = ctx.createLinearGradient(p0[0], p0[1], p1[0], p1[1]);
- } else if (type === 'radial') {
- grad = ctx.createRadialGradient(p0[0], p0[1], r0, p1[0], p1[1], r1);
- }
-
- for (var i = 0, ii = colorStops.length; i < ii; ++i) {
- var c = colorStops[i];
- grad.addColorStop(c[0], c[1]);
- }
- return grad;
- }
- };
- }
-};
-
-var createMeshCanvas = (function createMeshCanvasClosure() {
- function drawTriangle(data, context, p1, p2, p3, c1, c2, c3) {
- // Very basic Gouraud-shaded triangle rasterization algorithm.
- var coords = context.coords, colors = context.colors;
- var bytes = data.data, rowSize = data.width * 4;
- var tmp;
- if (coords[p1 + 1] > coords[p2 + 1]) {
- tmp = p1; p1 = p2; p2 = tmp; tmp = c1; c1 = c2; c2 = tmp;
- }
- if (coords[p2 + 1] > coords[p3 + 1]) {
- tmp = p2; p2 = p3; p3 = tmp; tmp = c2; c2 = c3; c3 = tmp;
- }
- if (coords[p1 + 1] > coords[p2 + 1]) {
- tmp = p1; p1 = p2; p2 = tmp; tmp = c1; c1 = c2; c2 = tmp;
- }
- var x1 = (coords[p1] + context.offsetX) * context.scaleX;
- var y1 = (coords[p1 + 1] + context.offsetY) * context.scaleY;
- var x2 = (coords[p2] + context.offsetX) * context.scaleX;
- var y2 = (coords[p2 + 1] + context.offsetY) * context.scaleY;
- var x3 = (coords[p3] + context.offsetX) * context.scaleX;
- var y3 = (coords[p3 + 1] + context.offsetY) * context.scaleY;
- if (y1 >= y3) {
- return;
- }
- var c1r = colors[c1], c1g = colors[c1 + 1], c1b = colors[c1 + 2];
- var c2r = colors[c2], c2g = colors[c2 + 1], c2b = colors[c2 + 2];
- var c3r = colors[c3], c3g = colors[c3 + 1], c3b = colors[c3 + 2];
-
- var minY = Math.round(y1), maxY = Math.round(y3);
- var xa, car, cag, cab;
- var xb, cbr, cbg, cbb;
- var k;
- for (var y = minY; y <= maxY; y++) {
- if (y < y2) {
- k = y < y1 ? 0 : y1 === y2 ? 1 : (y1 - y) / (y1 - y2);
- xa = x1 - (x1 - x2) * k;
- car = c1r - (c1r - c2r) * k;
- cag = c1g - (c1g - c2g) * k;
- cab = c1b - (c1b - c2b) * k;
- } else {
- k = y > y3 ? 1 : y2 === y3 ? 0 : (y2 - y) / (y2 - y3);
- xa = x2 - (x2 - x3) * k;
- car = c2r - (c2r - c3r) * k;
- cag = c2g - (c2g - c3g) * k;
- cab = c2b - (c2b - c3b) * k;
- }
- k = y < y1 ? 0 : y > y3 ? 1 : (y1 - y) / (y1 - y3);
- xb = x1 - (x1 - x3) * k;
- cbr = c1r - (c1r - c3r) * k;
- cbg = c1g - (c1g - c3g) * k;
- cbb = c1b - (c1b - c3b) * k;
- var x1_ = Math.round(Math.min(xa, xb));
- var x2_ = Math.round(Math.max(xa, xb));
- var j = rowSize * y + x1_ * 4;
- for (var x = x1_; x <= x2_; x++) {
- k = (xa - x) / (xa - xb);
- k = k < 0 ? 0 : k > 1 ? 1 : k;
- bytes[j++] = (car - (car - cbr) * k) | 0;
- bytes[j++] = (cag - (cag - cbg) * k) | 0;
- bytes[j++] = (cab - (cab - cbb) * k) | 0;
- bytes[j++] = 255;
- }
- }
- }
-
- function drawFigure(data, figure, context) {
- var ps = figure.coords;
- var cs = figure.colors;
- var i, ii;
- switch (figure.type) {
- case 'lattice':
- var verticesPerRow = figure.verticesPerRow;
- var rows = Math.floor(ps.length / verticesPerRow) - 1;
- var cols = verticesPerRow - 1;
- for (i = 0; i < rows; i++) {
- var q = i * verticesPerRow;
- for (var j = 0; j < cols; j++, q++) {
- drawTriangle(data, context,
- ps[q], ps[q + 1], ps[q + verticesPerRow],
- cs[q], cs[q + 1], cs[q + verticesPerRow]);
- drawTriangle(data, context,
- ps[q + verticesPerRow + 1], ps[q + 1], ps[q + verticesPerRow],
- cs[q + verticesPerRow + 1], cs[q + 1], cs[q + verticesPerRow]);
- }
- }
- break;
- case 'triangles':
- for (i = 0, ii = ps.length; i < ii; i += 3) {
- drawTriangle(data, context,
- ps[i], ps[i + 1], ps[i + 2],
- cs[i], cs[i + 1], cs[i + 2]);
- }
- break;
- default:
- error('illigal figure');
- break;
- }
- }
-
- function createMeshCanvas(bounds, combinesScale, coords, colors, figures,
- backgroundColor) {
- // we will increase scale on some weird factor to let antialiasing take
- // care of "rough" edges
- var EXPECTED_SCALE = 1.1;
- // MAX_PATTERN_SIZE is used to avoid OOM situation.
- var MAX_PATTERN_SIZE = 3000; // 10in @ 300dpi shall be enough
-
- var offsetX = Math.floor(bounds[0]);
- var offsetY = Math.floor(bounds[1]);
- var boundsWidth = Math.ceil(bounds[2]) - offsetX;
- var boundsHeight = Math.ceil(bounds[3]) - offsetY;
-
- var width = Math.min(Math.ceil(Math.abs(boundsWidth * combinesScale[0] *
- EXPECTED_SCALE)), MAX_PATTERN_SIZE);
- var height = Math.min(Math.ceil(Math.abs(boundsHeight * combinesScale[1] *
- EXPECTED_SCALE)), MAX_PATTERN_SIZE);
- var scaleX = boundsWidth / width;
- var scaleY = boundsHeight / height;
-
- var context = {
- coords: coords,
- colors: colors,
- offsetX: -offsetX,
- offsetY: -offsetY,
- scaleX: 1 / scaleX,
- scaleY: 1 / scaleY
- };
-
- var canvas, tmpCanvas, i, ii;
- if (WebGLUtils.isEnabled) {
- canvas = WebGLUtils.drawFigures(width, height, backgroundColor,
- figures, context);
-
- // https://bugzilla.mozilla.org/show_bug.cgi?id=972126
- tmpCanvas = CachedCanvases.getCanvas('mesh', width, height, false);
- tmpCanvas.context.drawImage(canvas, 0, 0);
- canvas = tmpCanvas.canvas;
- } else {
- tmpCanvas = CachedCanvases.getCanvas('mesh', width, height, false);
- var tmpCtx = tmpCanvas.context;
-
- var data = tmpCtx.createImageData(width, height);
- if (backgroundColor) {
- var bytes = data.data;
- for (i = 0, ii = bytes.length; i < ii; i += 4) {
- bytes[i] = backgroundColor[0];
- bytes[i + 1] = backgroundColor[1];
- bytes[i + 2] = backgroundColor[2];
- bytes[i + 3] = 255;
- }
- }
- for (i = 0; i < figures.length; i++) {
- drawFigure(data, figures[i], context);
- }
- tmpCtx.putImageData(data, 0, 0);
- canvas = tmpCanvas.canvas;
- }
-
- return {canvas: canvas, offsetX: offsetX, offsetY: offsetY,
- scaleX: scaleX, scaleY: scaleY};
- }
- return createMeshCanvas;
-})();
-
-ShadingIRs.Mesh = {
- fromIR: function Mesh_fromIR(raw) {
- //var type = raw[1];
- var coords = raw[2];
- var colors = raw[3];
- var figures = raw[4];
- var bounds = raw[5];
- var matrix = raw[6];
- //var bbox = raw[7];
- var background = raw[8];
- return {
- type: 'Pattern',
- getPattern: function Mesh_getPattern(ctx, owner, shadingFill) {
- var combinedScale;
- // Obtain scale from matrix and current transformation matrix.
- if (shadingFill) {
- combinedScale = Util.singularValueDecompose2dScale(
- ctx.mozCurrentTransform);
- } else {
- var matrixScale = Util.singularValueDecompose2dScale(matrix);
- var curMatrixScale = Util.singularValueDecompose2dScale(
- owner.baseTransform);
- combinedScale = [matrixScale[0] * curMatrixScale[0],
- matrixScale[1] * curMatrixScale[1]];
- }
-
-
- // Rasterizing on the main thread since sending/queue large canvases
- // might cause OOM.
- var temporaryPatternCanvas = createMeshCanvas(bounds, combinedScale,
- coords, colors, figures, shadingFill ? null : background);
-
- if (!shadingFill) {
- ctx.setTransform.apply(ctx, owner.baseTransform);
- if (matrix) {
- ctx.transform.apply(ctx, matrix);
- }
- }
-
- ctx.translate(temporaryPatternCanvas.offsetX,
- temporaryPatternCanvas.offsetY);
- ctx.scale(temporaryPatternCanvas.scaleX,
- temporaryPatternCanvas.scaleY);
-
- return ctx.createPattern(temporaryPatternCanvas.canvas, 'no-repeat');
- }
- };
- }
-};
-
-ShadingIRs.Dummy = {
- fromIR: function Dummy_fromIR() {
- return {
- type: 'Pattern',
- getPattern: function Dummy_fromIR_getPattern() {
- return 'hotpink';
- }
- };
- }
-};
-
-function getShadingPatternFromIR(raw) {
- var shadingIR = ShadingIRs[raw[0]];
- if (!shadingIR) {
- error('Unknown IR type: ' + raw[0]);
- }
- return shadingIR.fromIR(raw);
-}
-
-var TilingPattern = (function TilingPatternClosure() {
- var PaintType = {
- COLORED: 1,
- UNCOLORED: 2
- };
-
- var MAX_PATTERN_SIZE = 3000; // 10in @ 300dpi shall be enough
-
- function TilingPattern(IR, color, ctx, objs, commonObjs, baseTransform) {
- this.operatorList = IR[2];
- this.matrix = IR[3] || [1, 0, 0, 1, 0, 0];
- this.bbox = IR[4];
- this.xstep = IR[5];
- this.ystep = IR[6];
- this.paintType = IR[7];
- this.tilingType = IR[8];
- this.color = color;
- this.objs = objs;
- this.commonObjs = commonObjs;
- this.baseTransform = baseTransform;
- this.type = 'Pattern';
- this.ctx = ctx;
- }
-
- TilingPattern.prototype = {
- createPatternCanvas: function TilinPattern_createPatternCanvas(owner) {
- var operatorList = this.operatorList;
- var bbox = this.bbox;
- var xstep = this.xstep;
- var ystep = this.ystep;
- var paintType = this.paintType;
- var tilingType = this.tilingType;
- var color = this.color;
- var objs = this.objs;
- var commonObjs = this.commonObjs;
-
- info('TilingType: ' + tilingType);
-
- var x0 = bbox[0], y0 = bbox[1], x1 = bbox[2], y1 = bbox[3];
-
- var topLeft = [x0, y0];
- // we want the canvas to be as large as the step size
- var botRight = [x0 + xstep, y0 + ystep];
-
- var width = botRight[0] - topLeft[0];
- var height = botRight[1] - topLeft[1];
-
- // Obtain scale from matrix and current transformation matrix.
- var matrixScale = Util.singularValueDecompose2dScale(this.matrix);
- var curMatrixScale = Util.singularValueDecompose2dScale(
- this.baseTransform);
- var combinedScale = [matrixScale[0] * curMatrixScale[0],
- matrixScale[1] * curMatrixScale[1]];
-
- // MAX_PATTERN_SIZE is used to avoid OOM situation.
- // Use width and height values that are as close as possible to the end
- // result when the pattern is used. Too low value makes the pattern look
- // blurry. Too large value makes it look too crispy.
- width = Math.min(Math.ceil(Math.abs(width * combinedScale[0])),
- MAX_PATTERN_SIZE);
-
- height = Math.min(Math.ceil(Math.abs(height * combinedScale[1])),
- MAX_PATTERN_SIZE);
-
- var tmpCanvas = CachedCanvases.getCanvas('pattern', width, height, true);
- var tmpCtx = tmpCanvas.context;
- var graphics = new CanvasGraphics(tmpCtx, commonObjs, objs);
- graphics.groupLevel = owner.groupLevel;
-
- this.setFillAndStrokeStyleToContext(tmpCtx, paintType, color);
-
- this.setScale(width, height, xstep, ystep);
- this.transformToScale(graphics);
-
- // transform coordinates to pattern space
- var tmpTranslate = [1, 0, 0, 1, -topLeft[0], -topLeft[1]];
- graphics.transform.apply(graphics, tmpTranslate);
-
- this.clipBbox(graphics, bbox, x0, y0, x1, y1);
-
- graphics.executeOperatorList(operatorList);
- return tmpCanvas.canvas;
- },
-
- setScale: function TilingPattern_setScale(width, height, xstep, ystep) {
- this.scale = [width / xstep, height / ystep];
- },
-
- transformToScale: function TilingPattern_transformToScale(graphics) {
- var scale = this.scale;
- var tmpScale = [scale[0], 0, 0, scale[1], 0, 0];
- graphics.transform.apply(graphics, tmpScale);
- },
-
- scaleToContext: function TilingPattern_scaleToContext() {
- var scale = this.scale;
- this.ctx.scale(1 / scale[0], 1 / scale[1]);
- },
-
- clipBbox: function clipBbox(graphics, bbox, x0, y0, x1, y1) {
- if (bbox && isArray(bbox) && 4 == bbox.length) {
- var bboxWidth = x1 - x0;
- var bboxHeight = y1 - y0;
- graphics.rectangle(x0, y0, bboxWidth, bboxHeight);
- graphics.clip();
- graphics.endPath();
- }
- },
-
- setFillAndStrokeStyleToContext:
- function setFillAndStrokeStyleToContext(context, paintType, color) {
- switch (paintType) {
- case PaintType.COLORED:
- var ctx = this.ctx;
- context.fillStyle = ctx.fillStyle;
- context.strokeStyle = ctx.strokeStyle;
- break;
- case PaintType.UNCOLORED:
- var cssColor = Util.makeCssRgb(color);
- context.fillStyle = cssColor;
- context.strokeStyle = cssColor;
- break;
- default:
- error('Unsupported paint type: ' + paintType);
- }
- },
-
- getPattern: function TilingPattern_getPattern(ctx, owner) {
- var temporaryPatternCanvas = this.createPatternCanvas(owner);
-
- ctx = this.ctx;
- ctx.setTransform.apply(ctx, this.baseTransform);
- ctx.transform.apply(ctx, this.matrix);
- this.scaleToContext();
-
- return ctx.createPattern(temporaryPatternCanvas, 'repeat');
- }
- };
-
- return TilingPattern;
-})();
-
-
-PDFJS.disableFontFace = false;
-
-var FontLoader = {
- insertRule: function fontLoaderInsertRule(rule) {
- var styleElement = document.getElementById('PDFJS_FONT_STYLE_TAG');
- if (!styleElement) {
- styleElement = document.createElement('style');
- styleElement.id = 'PDFJS_FONT_STYLE_TAG';
- document.documentElement.getElementsByTagName('head')[0].appendChild(
- styleElement);
- }
-
- var styleSheet = styleElement.sheet;
- styleSheet.insertRule(rule, styleSheet.cssRules.length);
- },
-
- clear: function fontLoaderClear() {
- var styleElement = document.getElementById('PDFJS_FONT_STYLE_TAG');
- if (styleElement) {
- styleElement.parentNode.removeChild(styleElement);
- }
- },
- get loadTestFont() {
- // This is a CFF font with 1 glyph for '.' that fills its entire width and
- // height.
- return shadow(this, 'loadTestFont', atob(
- 'T1RUTwALAIAAAwAwQ0ZGIDHtZg4AAAOYAAAAgUZGVE1lkzZwAAAEHAAAABxHREVGABQAFQ' +
- 'AABDgAAAAeT1MvMlYNYwkAAAEgAAAAYGNtYXABDQLUAAACNAAAAUJoZWFk/xVFDQAAALwA' +
- 'AAA2aGhlYQdkA+oAAAD0AAAAJGhtdHgD6AAAAAAEWAAAAAZtYXhwAAJQAAAAARgAAAAGbm' +
- 'FtZVjmdH4AAAGAAAAAsXBvc3T/hgAzAAADeAAAACAAAQAAAAEAALZRFsRfDzz1AAsD6AAA' +
- 'AADOBOTLAAAAAM4KHDwAAAAAA+gDIQAAAAgAAgAAAAAAAAABAAADIQAAAFoD6AAAAAAD6A' +
- 'ABAAAAAAAAAAAAAAAAAAAAAQAAUAAAAgAAAAQD6AH0AAUAAAKKArwAAACMAooCvAAAAeAA' +
- 'MQECAAACAAYJAAAAAAAAAAAAAQAAAAAAAAAAAAAAAFBmRWQAwAAuAC4DIP84AFoDIQAAAA' +
- 'AAAQAAAAAAAAAAACAAIAABAAAADgCuAAEAAAAAAAAAAQAAAAEAAAAAAAEAAQAAAAEAAAAA' +
- 'AAIAAQAAAAEAAAAAAAMAAQAAAAEAAAAAAAQAAQAAAAEAAAAAAAUAAQAAAAEAAAAAAAYAAQ' +
- 'AAAAMAAQQJAAAAAgABAAMAAQQJAAEAAgABAAMAAQQJAAIAAgABAAMAAQQJAAMAAgABAAMA' +
- 'AQQJAAQAAgABAAMAAQQJAAUAAgABAAMAAQQJAAYAAgABWABYAAAAAAAAAwAAAAMAAAAcAA' +
- 'EAAAAAADwAAwABAAAAHAAEACAAAAAEAAQAAQAAAC7//wAAAC7////TAAEAAAAAAAABBgAA' +
- 'AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEAAAAAAA' +
- 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA' +
- 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA' +
- 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA' +
- 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMAAA' +
- 'AAAAD/gwAyAAAAAQAAAAAAAAAAAAAAAAAAAAABAAQEAAEBAQJYAAEBASH4DwD4GwHEAvgc' +
- 'A/gXBIwMAYuL+nz5tQXkD5j3CBLnEQACAQEBIVhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWF' +
- 'hYWFhYWFhYAAABAQAADwACAQEEE/t3Dov6fAH6fAT+fPp8+nwHDosMCvm1Cvm1DAz6fBQA' +
- 'AAAAAAABAAAAAMmJbzEAAAAAzgTjFQAAAADOBOQpAAEAAAAAAAAADAAUAAQAAAABAAAAAg' +
- 'ABAAAAAAAAAAAD6AAAAAAAAA=='
- ));
- },
-
- loadTestFontId: 0,
-
- loadingContext: {
- requests: [],
- nextRequestId: 0
- },
-
- isSyncFontLoadingSupported: (function detectSyncFontLoadingSupport() {
- if (isWorker) {
- return false;
- }
-
- // User agent string sniffing is bad, but there is no reliable way to tell
- // if font is fully loaded and ready to be used with canvas.
- var userAgent = window.navigator.userAgent;
- var m = /Mozilla\/5.0.*?rv:(\d+).*? Gecko/.exec(userAgent);
- if (m && m[1] >= 14) {
- return true;
- }
- // TODO other browsers
- return false;
- })(),
-
- bind: function fontLoaderBind(fonts, callback) {
- assert(!isWorker, 'bind() shall be called from main thread');
-
- var rules = [], fontsToLoad = [];
- for (var i = 0, ii = fonts.length; i < ii; i++) {
- var font = fonts[i];
-
- // Add the font to the DOM only once or skip if the font
- // is already loaded.
- if (font.attached || font.loading === false) {
- continue;
- }
- font.attached = true;
-
- var rule = font.bindDOM();
- if (rule) {
- rules.push(rule);
- fontsToLoad.push(font);
- }
- }
-
- var request = FontLoader.queueLoadingCallback(callback);
- if (rules.length > 0 && !this.isSyncFontLoadingSupported) {
- FontLoader.prepareFontLoadEvent(rules, fontsToLoad, request);
- } else {
- request.complete();
- }
- },
-
- queueLoadingCallback: function FontLoader_queueLoadingCallback(callback) {
- function LoadLoader_completeRequest() {
- assert(!request.end, 'completeRequest() cannot be called twice');
- request.end = Date.now();
-
- // sending all completed requests in order how they were queued
- while (context.requests.length > 0 && context.requests[0].end) {
- var otherRequest = context.requests.shift();
- setTimeout(otherRequest.callback, 0);
- }
- }
-
- var context = FontLoader.loadingContext;
- var requestId = 'pdfjs-font-loading-' + (context.nextRequestId++);
- var request = {
- id: requestId,
- complete: LoadLoader_completeRequest,
- callback: callback,
- started: Date.now()
- };
- context.requests.push(request);
- return request;
- },
-
- prepareFontLoadEvent: function fontLoaderPrepareFontLoadEvent(rules,
- fonts,
- request) {
- /** Hack begin */
- // There's currently no event when a font has finished downloading so the
- // following code is a dirty hack to 'guess' when a font is
- // ready. It's assumed fonts are loaded in order, so add a known test
- // font after the desired fonts and then test for the loading of that
- // test font.
-
- function int32(data, offset) {
- return (data.charCodeAt(offset) << 24) |
- (data.charCodeAt(offset + 1) << 16) |
- (data.charCodeAt(offset + 2) << 8) |
- (data.charCodeAt(offset + 3) & 0xff);
- }
-
- function spliceString(s, offset, remove, insert) {
- var chunk1 = s.substr(0, offset);
- var chunk2 = s.substr(offset + remove);
- return chunk1 + insert + chunk2;
- }
-
- var i, ii;
-
- var canvas = document.createElement('canvas');
- canvas.width = 1;
- canvas.height = 1;
- var ctx = canvas.getContext('2d');
-
- var called = 0;
- function isFontReady(name, callback) {
- called++;
- // With setTimeout clamping this gives the font ~100ms to load.
- if(called > 30) {
- warn('Load test font never loaded.');
- callback();
- return;
- }
- ctx.font = '30px ' + name;
- ctx.fillText('.', 0, 20);
- var imageData = ctx.getImageData(0, 0, 1, 1);
- if (imageData.data[3] > 0) {
- callback();
- return;
- }
- setTimeout(isFontReady.bind(null, name, callback));
- }
-
- var loadTestFontId = 'lt' + Date.now() + this.loadTestFontId++;
- // Chromium seems to cache fonts based on a hash of the actual font data,
- // so the font must be modified for each load test else it will appear to
- // be loaded already.
- // TODO: This could maybe be made faster by avoiding the btoa of the full
- // font by splitting it in chunks before hand and padding the font id.
- var data = this.loadTestFont;
- var COMMENT_OFFSET = 976; // has to be on 4 byte boundary (for checksum)
- data = spliceString(data, COMMENT_OFFSET, loadTestFontId.length,
- loadTestFontId);
- // CFF checksum is important for IE, adjusting it
- var CFF_CHECKSUM_OFFSET = 16;
- var XXXX_VALUE = 0x58585858; // the "comment" filled with 'X'
- var checksum = int32(data, CFF_CHECKSUM_OFFSET);
- for (i = 0, ii = loadTestFontId.length - 3; i < ii; i += 4) {
- checksum = (checksum - XXXX_VALUE + int32(loadTestFontId, i)) | 0;
- }
- if (i < loadTestFontId.length) { // align to 4 bytes boundary
- checksum = (checksum - XXXX_VALUE +
- int32(loadTestFontId + 'XXX', i)) | 0;
- }
- data = spliceString(data, CFF_CHECKSUM_OFFSET, 4, string32(checksum));
-
- var url = 'url(data:font/opentype;base64,' + btoa(data) + ');';
- var rule = '@font-face { font-family:"' + loadTestFontId + '";src:' +
- url + '}';
- FontLoader.insertRule(rule);
-
- var names = [];
- for (i = 0, ii = fonts.length; i < ii; i++) {
- names.push(fonts[i].loadedName);
- }
- names.push(loadTestFontId);
-
- var div = document.createElement('div');
- div.setAttribute('style',
- 'visibility: hidden;' +
- 'width: 10px; height: 10px;' +
- 'position: absolute; top: 0px; left: 0px;');
- for (i = 0, ii = names.length; i < ii; ++i) {
- var span = document.createElement('span');
- span.textContent = 'Hi';
- span.style.fontFamily = names[i];
- div.appendChild(span);
- }
- document.body.appendChild(div);
-
- isFontReady(loadTestFontId, function() {
- document.body.removeChild(div);
- request.complete();
- });
- /** Hack end */
- }
-};
-
-var FontFace = (function FontFaceClosure() {
- function FontFace(name, file, properties) {
- this.compiledGlyphs = {};
- if (arguments.length === 1) {
- // importing translated data
- var data = arguments[0];
- for (var i in data) {
- this[i] = data[i];
- }
- return;
- }
- }
- FontFace.prototype = {
- bindDOM: function FontFace_bindDOM() {
- if (!this.data) {
- return null;
- }
-
- if (PDFJS.disableFontFace) {
- this.disableFontFace = true;
- return null;
- }
-
- var data = bytesToString(new Uint8Array(this.data));
- var fontName = this.loadedName;
-
- // Add the font-face rule to the document
- var url = ('url(data:' + this.mimetype + ';base64,' +
- window.btoa(data) + ');');
- var rule = '@font-face { font-family:"' + fontName + '";src:' + url + '}';
- FontLoader.insertRule(rule);
-
- if (PDFJS.pdfBug && 'FontInspector' in globalScope &&
- globalScope['FontInspector'].enabled) {
- globalScope['FontInspector'].fontAdded(this, url);
- }
-
- return rule;
- },
-
- getPathGenerator: function (objs, character) {
- if (!(character in this.compiledGlyphs)) {
- var js = objs.get(this.loadedName + '_path_' + character);
- /*jshint -W054 */
- this.compiledGlyphs[character] = new Function('c', 'size', js);
- }
- return this.compiledGlyphs[character];
- }
- };
- return FontFace;
-})();
-
-
-}).call((typeof window === 'undefined') ? this : window);
-
-if (!PDFJS.workerSrc && typeof document !== 'undefined') {
- // workerSrc is not set -- using last script url to define default location
- PDFJS.workerSrc = (function () {
- 'use strict';
- var scriptTagContainer = document.body ||
- document.getElementsByTagName('head')[0];
- var pdfjsSrc = scriptTagContainer.lastChild.src;
- return pdfjsSrc && pdfjsSrc.replace(/\.js$/i, '.worker.js');
- })();
-}
-
-
generated by cgit v1.3.1 (git 2.54.0) at 2026-08-02 10:46:02 +0000