/* testimage.c * Copyright (C) 2004 Red Hat, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library. If not, see . */ #include #include static void drag_begin (GtkWidget *widget, GdkDragContext *context, gpointer data) { GtkWidget *image = GTK_WIDGET (data); GdkPaintable *paintable; paintable = gtk_image_get_paintable (GTK_IMAGE (image)); gtk_drag_set_icon_paintable (context, paintable, -2, -2); } void drag_data_get (GtkWidget *widget, GdkDragContext *context, GtkSelectionData *selection_data, gpointer data) { GtkWidget *image = GTK_WIDGET (data); GdkPaintable *paintable; paintable = gtk_image_get_paintable (GTK_IMAGE (image)); if (GDK_IS_TEXTURE (paintable)) gtk_selection_data_set_texture (selection_data, GDK_TEXTURE (paintable)); } static void drag_data_received (GtkWidget *widget, GdkDragContext *context, GtkSelectionData *selection_data, guint info, guint32 time, gpointer data) { GtkWidget *image = GTK_WIDGET (data); GdkTexture *texture; if (gtk_selection_data_get_length (selection_data) < 0) return; texture = gtk_selection_data_get_texture (selection_data); gtk_image_set_from_paintable (GTK_IMAGE (image), GDK_PAINTABLE (texture)); g_object_unref (texture); } static gboolean idle_func (gpointer data) { g_print ("keep me busy\n"); return G_SOURCE_CONTINUE; } int main (int argc, char **argv) { GtkWidget *window, *grid; GtkWidget *label, *image; GtkIconTheme *theme; GdkTexture *texture; gchar *icon_name = "help-browser"; gchar *anim_filename = NULL; GtkIconInfo *icon_info; GIcon *icon; GFile *file; gtk_init (); if (argc > 1) icon_name = argv[1]; if (argc > 2) anim_filename = argv[2]; window = gtk_window_new (GTK_WINDOW_TOPLEVEL); grid = gtk_grid_new (); gtk_grid_set_row_spacing (GTK_GRID (grid), 10); gtk_grid_set_column_spacing (GTK_GRID (grid), 10); gtk_container_add (GTK_CONTAINER (window), grid); label = gtk_label_new ("symbolic size"); gtk_grid_attach (GTK_GRID (grid), label, 1, 0, 1, 1); label = gtk_label_new ("fixed size"); gtk_grid_attach (GTK_GRID (grid), label, 2, 0, 1, 1); label = gtk_label_new ("GTK_IMAGE_PIXBUF"); gtk_grid_attach (GTK_GRID (grid), label, 0, 1, 1, 1); theme = gtk_icon_theme_get_default (); icon_info = gtk_icon_theme_lookup_icon_for_scale (theme, icon_name, 48, gtk_widget_get_scale_factor (window), GTK_ICON_LOOKUP_GENERIC_FALLBACK); texture = gtk_icon_info_load_texture (icon_info); g_object_unref (icon_info); image = gtk_image_new_from_paintable (GDK_PAINTABLE (texture)); g_object_unref (texture); gtk_grid_attach (GTK_GRID (grid), image, 2, 1, 1, 1); gtk_drag_source_set (image, GDK_BUTTON1_MASK, NULL, GDK_ACTION_COPY); gtk_drag_source_add_image_targets (image); g_signal_connect (image, "drag_begin", G_CALLBACK (drag_begin), image); g_signal_connect (image, "drag_data_get", G_CALLBACK (drag_data_get), image); gtk_drag_dest_set (image, GTK_DEST_DEFAULT_MOTION | GTK_DEST_DEFAULT_HIGHLIGHT | GTK_DEST_DEFAULT_DROP, NULL, GDK_ACTION_COPY); gtk_drag_dest_add_image_targets (image); g_signal_connect (image, "drag_data_received", G_CALLBACK (drag_data_received), image); label = gtk_label_new ("GTK_IMAGE_ICON_NAME"); gtk_grid_attach (GTK_GRID (grid), label, 0, 4, 1, 1); image = gtk_image_new_from_icon_name (icon_name); gtk_image_set_icon_size (GTK_IMAGE (image), GTK_ICON_SIZE_LARGE); gtk_grid_attach (GTK_GRID (grid), image, 1, 4, 1, 1); image = gtk_image_new_from_icon_name (icon_name); gtk_image_set_icon_size (GTK_IMAGE (image), GTK_ICON_SIZE_LARGE); gtk_image_set_pixel_size (GTK_IMAGE (image), 30); gtk_grid_attach (GTK_GRID (grid), image, 2, 4, 1, 1); label = gtk_label_new ("GTK_IMAGE_GICON"); gtk_grid_attach (GTK_GRID (grid), label, 0, 5, 1, 1); icon = g_themed_icon_new_with_default_fallbacks ("folder-remote"); image = gtk_image_new_from_gicon (icon); gtk_image_set_icon_size (GTK_IMAGE (image), GTK_ICON_SIZE_LARGE); g_object_unref (icon); gtk_grid_attach (GTK_GRID (grid), image, 1, 5, 1, 1); file = g_file_new_for_path ("apple-red.png"); icon = g_file_icon_new (file); image = gtk_image_new_from_gicon (icon); gtk_image_set_icon_size (GTK_IMAGE (image), GTK_ICON_SIZE_LARGE); g_object_unref (icon); gtk_image_set_pixel_size (GTK_IMAGE (image), 30); gtk_grid_attach (GTK_GRID (grid), image, 2, 5, 1, 1); if (anim_filename) { label = gtk_label_new ("GTK_IMAGE_ANIMATION (from file)"); gtk_grid_attach (GTK_GRID (grid), label, 0, 6, 1, 1); image = gtk_image_new_from_file (anim_filename); gtk_image_set_pixel_size (GTK_IMAGE (image), 30); gtk_grid_attach (GTK_GRID (grid), image, 2, 6, 1, 1); /* produce high load */ g_idle_add_full (G_PRIORITY_DEFAULT, idle_func, NULL, NULL); } gtk_widget_show (window); gtk_main (); return 0; }