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#include <stdlib.h>
#include <string.h>
#include <gtk/gtk.h>
#include <gdk/gdkwayland.h>
#include "desktop-shell-client-protocol.h"
gchar *filename = "background.jpg";
struct desktop {
struct wl_display *display;
struct wl_registry *registry;
struct desktop_shell *shell;
struct wl_output *output;
struct wl_surface *surface;
GdkDisplay *gdk_display;
/* Background */
GtkWidget *window;
GdkPixbuf *background;
};
static void
desktop_shell_configure(void *data,
struct desktop_shell *desktop_shell,
uint32_t edges,
struct wl_surface *surface,
int32_t width, int32_t height)
{
struct desktop *desktop = wl_surface_get_user_data(surface);
gtk_widget_set_size_request (desktop->window, width, height);
}
static void
desktop_shell_prepare_lock_surface(void *data,
struct desktop_shell *desktop_shell)
{
}
static void
desktop_shell_grab_cursor(void *data, struct desktop_shell *desktop_shell,
uint32_t cursor)
{
}
static const struct desktop_shell_listener listener = {
desktop_shell_configure,
desktop_shell_prepare_lock_surface,
desktop_shell_grab_cursor
};
/* Expose callback for the drawing area */
static gboolean
draw_cb (GtkWidget *widget, cairo_t *cr, gpointer data)
{
struct desktop *desktop = data;
gdk_cairo_set_source_pixbuf (cr, desktop->background, 0, 0);
cairo_paint (cr);
return TRUE;
}
/* Destroy handler for the window */
static void
destroy_cb (GObject *object, gpointer data)
{
gtk_main_quit ();
}
static void
background_create(struct desktop *desktop)
{
GdkWindow *gdk_window;
/* TODO: get the "right" directory */
desktop->background = gdk_pixbuf_new_from_file (filename, NULL);
if (!desktop->background) {
g_message ("Could not load background.");
exit (EXIT_FAILURE);
}
desktop->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
g_signal_connect (desktop->window, "destroy",
G_CALLBACK (destroy_cb), NULL);
g_signal_connect (desktop->window, "draw",
G_CALLBACK (draw_cb), desktop);
gtk_window_set_title(GTK_WINDOW(desktop->window), "gtk shell");
gtk_window_set_decorated(GTK_WINDOW(desktop->window), FALSE);
gtk_widget_realize(desktop->window);
gdk_window = gtk_widget_get_window(desktop->window);
gdk_wayland_window_set_use_custom_surface(gdk_window);
desktop->surface = gdk_wayland_window_get_wl_surface(gdk_window);
desktop_shell_set_background(desktop->shell, desktop->output,
desktop->surface);
gtk_widget_show_all(desktop->window);
}
static void
registry_handle_global(void *data, struct wl_registry *registry,
uint32_t name, const char *interface, uint32_t version)
{
struct desktop *d = data;
if (!strcmp(interface, "desktop_shell")) {
d->shell = wl_registry_bind(registry, name,
&desktop_shell_interface, 1);
desktop_shell_add_listener(d->shell, &listener, d);
} else if (!strcmp(interface, "wl_output")) {
/* TODO: create multiple outputs */
d->output = wl_registry_bind(registry, name,
&wl_output_interface, 1);
}
}
static void
registry_handle_global_remove(void *data, struct wl_registry *registry,
uint32_t name)
{
}
static const struct wl_registry_listener registry_listener = {
registry_handle_global,
registry_handle_global_remove
};
int
main(int argc, char *argv[])
{
struct desktop *desktop;
gtk_init(&argc, &argv);
desktop = malloc(sizeof *desktop);
desktop->output = NULL;
desktop->shell = NULL;
desktop->gdk_display = gdk_display_get_default();
desktop->display =
gdk_wayland_display_get_wl_display(desktop->gdk_display);
if (desktop->display == NULL) {
fprintf(stderr, "failed to get display: %m\n");
return -1;
}
desktop->registry = wl_display_get_registry(desktop->display);
wl_registry_add_listener(desktop->registry,
®istry_listener, desktop);
/* Wait until we have been notified about the compositor and shell
* objects */
while (!desktop->output || !desktop->shell)
wl_display_roundtrip (desktop->display);
background_create(desktop);
gtk_main();
return EXIT_SUCCESS;
}
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