shell-helper: implement interface in weston module

1 files changed, 255 insertions, 0 deletions

diff --git a/shell/shell-helper.c b/shell/shell-helper.c
new file mode 100644
index 0000000..71e9b6f
--- /dev/null
+++ b/shell/shell-helper.c
@@ -0,0 +1,255 @@
+#include <stdio.h>
+#include <assert.h>
+
+#include <weston/compositor.h>
+
+#include "shell-helper-server-protocol.h"
+
+struct shell_helper {
+	struct weston_compositor *compositor;
+
+	struct wl_listener destroy_listener;
+
+	struct wl_list slide_list;
+};
+
+static void
+shell_helper_move_surface(struct wl_client *client,
+			  struct wl_resource *resource,
+			  struct wl_resource *surface_resource,
+			  int32_t x,
+			  int32_t y)
+{
+	struct shell_helper *helper = wl_resource_get_user_data(resource);
+	struct weston_surface *surface =
+		wl_resource_get_user_data(surface_resource);
+	struct weston_view *view;
+
+	view = container_of(surface->views.next, struct weston_view, surface_link);
+
+	if (!view)
+		return;
+
+	weston_view_set_position(view, x, y);
+	weston_view_update_transform(view);
+}
+
+enum SlideState {
+	SLIDE_STATE_NONE,
+	SLIDE_STATE_SLIDING_OUT,
+	SLIDE_STATE_OUT,
+	SLIDE_STATE_SLIDING_BACK,
+	SLIDE_STATE_BACK
+};
+
+enum SlideRequest {
+	SLIDE_REQUEST_NONE,
+	SLIDE_REQUEST_OUT,
+	SLIDE_REQUEST_BACK
+};
+
+struct slide {
+	struct weston_surface *surface;
+	struct weston_view *view;
+	int x;
+	int y;
+
+	enum SlideState state;
+	enum SlideRequest request;
+
+	struct weston_transform transform;
+
+	struct wl_list link;
+};
+
+static void slide_back(struct slide *slide);
+
+static void
+slide_done_cb(struct weston_view_animation *animation, void *data)
+{
+	struct slide *slide = data;
+
+	slide->state = SLIDE_STATE_OUT;
+
+	wl_list_insert(&slide->view->transform.position.link,
+		       &slide->transform.link);
+	weston_matrix_init(&slide->transform.matrix);
+	weston_matrix_translate(&slide->transform.matrix,
+				slide->x,
+				slide->y,
+				0);
+
+	weston_view_geometry_dirty(slide->view);
+	weston_compositor_schedule_repaint(slide->surface->compositor);
+
+	if (slide->request == SLIDE_REQUEST_BACK) {
+		slide->request = SLIDE_REQUEST_NONE;
+		slide_back(slide);
+	}
+}
+
+static void
+slide_out(struct slide *slide)
+{
+	assert(slide->state == SLIDE_STATE_NONE || slide->state == SLIDE_STATE_BACK);
+
+	slide->state = SLIDE_STATE_SLIDING_OUT;
+
+	weston_move_scale_run(slide->view, slide->x, slide->y,
+			      1.0, 1.0, 0,
+			      slide_done_cb, slide);
+}
+
+static void
+slide_back_done_cb(struct weston_view_animation *animation, void *data)
+{
+	struct slide *slide = data;
+
+	slide->state = SLIDE_STATE_BACK;
+
+	wl_list_remove(&slide->transform.link);
+	weston_view_geometry_dirty(slide->view);
+
+	if (slide->request == SLIDE_REQUEST_OUT) {
+		slide->request = SLIDE_REQUEST_NONE;
+		slide_out(slide);
+	} else {
+		wl_list_remove(&slide->link);
+		free(slide);
+	}
+}
+
+static void
+slide_back(struct slide *slide)
+{
+	assert(slide->state == SLIDE_STATE_OUT);
+
+	slide->state = SLIDE_STATE_SLIDING_BACK;
+
+	weston_move_scale_run(slide->view, -slide->x, -slide->y,
+			      1.0, 1.0, 0,
+			      slide_back_done_cb, slide);
+}
+
+static void
+shell_helper_slide_surface(struct wl_client *client,
+			   struct wl_resource *resource,
+			   struct wl_resource *surface_resource,
+			   int32_t x,
+			   int32_t y)
+{
+	struct shell_helper *helper = wl_resource_get_user_data(resource);
+	struct weston_surface *surface =
+		wl_resource_get_user_data(surface_resource);
+	struct weston_view *view;
+	struct slide *slide;
+
+	wl_list_for_each(slide, &helper->slide_list, link) {
+		if (slide->surface == surface) {
+			if (slide->state == SLIDE_STATE_SLIDING_BACK)
+				slide->request = SLIDE_REQUEST_OUT;
+			return;
+		}
+	}
+
+	view = container_of(surface->views.next, struct weston_view, surface_link);
+
+	if (!view)
+		return;
+
+	slide = malloc(sizeof *slide);
+	if (!slide)
+		return;
+
+	slide->surface = surface;
+	slide->view = view;
+	slide->x = x;
+	slide->y = y;
+
+	slide->state = SLIDE_STATE_NONE;
+	slide->request = SLIDE_REQUEST_NONE;
+
+	wl_list_insert(&helper->slide_list,
+		       &slide->link);
+
+	slide_out(slide);
+}
+
+static void
+shell_helper_slide_surface_back(struct wl_client *client,
+				struct wl_resource *resource,
+				struct wl_resource *surface_resource)
+{
+	struct shell_helper *helper = wl_resource_get_user_data(resource);
+	struct weston_surface *surface =
+		wl_resource_get_user_data(surface_resource);
+	struct weston_view *view;
+	int found = 0;
+	struct slide *slide;
+
+	wl_list_for_each(slide, &helper->slide_list, link) {
+		if (slide->surface == surface) {
+			found = 1;
+			break;
+		}
+	}
+
+	if (!found || slide->state == SLIDE_STATE_SLIDING_BACK)
+		return;
+
+	if (slide->state == SLIDE_STATE_SLIDING_OUT)
+		slide->request = SLIDE_REQUEST_BACK;
+	else
+		slide_back(slide);
+}
+
+static const struct shell_helper_interface helper_implementation = {
+	shell_helper_move_surface,
+	shell_helper_slide_surface,
+	shell_helper_slide_surface_back
+};
+
+static void
+bind_helper(struct wl_client *client, void *data, uint32_t version, uint32_t id)
+{
+	struct shell_helper *helper = data;
+	struct wl_resource *resource;
+
+	resource = wl_resource_create(client, &shell_helper_interface, 1, id);
+	if (resource)
+		wl_resource_set_implementation(resource, &helper_implementation,
+					       helper, NULL);
+}
+
+static void
+helper_destroy(struct wl_listener *listener, void *data)
+{
+	struct shell_helper *helper =
+		container_of(listener, struct shell_helper, destroy_listener);
+
+	free(helper);
+}
+
+WL_EXPORT int
+module_init(struct weston_compositor *ec,
+	    int *argc, char *argv[])
+{
+	struct shell_helper *helper;
+
+	helper = zalloc(sizeof *helper);
+	if (helper == NULL)
+		return -1;
+
+	helper->compositor = ec;
+
+	wl_list_init(&helper->slide_list);
+
+	helper->destroy_listener.notify = helper_destroy;
+	wl_signal_add(&ec->destroy_signal, &helper->destroy_listener);
+
+	if (wl_global_create(ec->wl_display, &shell_helper_interface, 1,
+			     helper, bind_helper) == NULL)
+		return -1;
+
+	return 0;
+}