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gtk/tests/testimage.c

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/* 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <gtk/gtk.h>
#include <gio/gio.h>
static void
drag_begin (GtkWidget *widget,
GdkDragContext *context,
gpointer data)
{
GtkWidget *image = GTK_WIDGET (data);
GdkPixbuf *pixbuf = gtk_image_get_pixbuf (GTK_IMAGE (image));
gtk_drag_set_icon_pixbuf (context, pixbuf, -2, -2);
}
void
drag_data_get (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint info,
guint time,
gpointer data)
{
GtkWidget *image = GTK_WIDGET (data);
GdkPixbuf *pixbuf = gtk_image_get_pixbuf (GTK_IMAGE (image));
gtk_selection_data_set_pixbuf (selection_data, pixbuf);
}
static void
drag_data_received (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *selection_data,
guint info,
guint32 time,
gpointer data)
{
GtkWidget *image = GTK_WIDGET (data);
GdkPixbuf *pixbuf;
if (gtk_selection_data_get_length (selection_data) < 0)
return;
pixbuf = gtk_selection_data_get_pixbuf (selection_data);
gtk_image_set_from_pixbuf (GTK_IMAGE (image), pixbuf);
}
static gboolean
idle_func (gpointer data)
{
g_print ("keep me busy\n");
return TRUE;
}
static gboolean
anim_image_draw (GtkWidget *widget,
cairo_t *cr,
gpointer data)
{
g_print ("start busyness\n");
g_signal_handlers_disconnect_by_func (widget, anim_image_draw, data);
/* produce high load */
g_idle_add_full (G_PRIORITY_DEFAULT,
idle_func, NULL, NULL);
return FALSE;
}
int
main (int argc, char **argv)
{
GtkWidget *window, *grid;
GtkWidget *label, *image, *box;
GtkIconTheme *theme;
GdkPixbuf *pixbuf;
GtkIconSet *iconset;
GtkIconSource *iconsource;
gchar *icon_name = "gnome-terminal";
gchar *anim_filename = NULL;
GIcon *icon;
GFile *file;
gtk_init (&argc, &argv);
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_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 ();
pixbuf = gtk_icon_theme_load_icon (theme, icon_name, 48, 0, NULL);
image = gtk_image_new_from_pixbuf (pixbuf);
box = gtk_event_box_new ();
gtk_container_add (GTK_CONTAINER (box), image);
gtk_grid_attach (GTK_GRID (grid), box, 2, 1, 1, 1);
gtk_drag_source_set (box, GDK_BUTTON1_MASK,
NULL, 0,
GDK_ACTION_COPY);
gtk_drag_source_add_image_targets (box);
g_signal_connect (box, "drag_begin", G_CALLBACK (drag_begin), image);
g_signal_connect (box, "drag_data_get", G_CALLBACK (drag_data_get), image);
gtk_drag_dest_set (box,
GTK_DEST_DEFAULT_MOTION |
GTK_DEST_DEFAULT_HIGHLIGHT |
GTK_DEST_DEFAULT_DROP,
NULL, 0, GDK_ACTION_COPY);
gtk_drag_dest_add_image_targets (box);
g_signal_connect (box, "drag_data_received",
G_CALLBACK (drag_data_received), image);
label = gtk_label_new ("GTK_IMAGE_STOCK");
gtk_grid_attach (GTK_GRID (grid), label, 0, 2, 1, 1);
image = gtk_image_new_from_stock (GTK_STOCK_REDO, GTK_ICON_SIZE_DIALOG);
gtk_grid_attach (GTK_GRID (grid), image, 1, 2, 1, 1);
label = gtk_label_new ("GTK_IMAGE_ICON_SET");
gtk_grid_attach (GTK_GRID (grid), label, 0, 3, 1, 1);
iconsource = gtk_icon_source_new ();
gtk_icon_source_set_icon_name (iconsource, icon_name);
iconset = gtk_icon_set_new ();
gtk_icon_set_add_source (iconset, iconsource);
image = gtk_image_new_from_icon_set (iconset, GTK_ICON_SIZE_DIALOG);
gtk_grid_attach (GTK_GRID (grid), image, 1, 3, 1, 1);
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_ICON_SIZE_DIALOG);
gtk_grid_attach (GTK_GRID (grid), image, 1, 4, 1, 1);
image = gtk_image_new_from_icon_name (icon_name, GTK_ICON_SIZE_DIALOG);
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_ICON_SIZE_DIALOG);
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_ICON_SIZE_DIALOG);
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_signal_connect_after (image, "draw",
G_CALLBACK (anim_image_draw),
NULL);
}
gtk_widget_show_all (window);
gtk_main ();
return 0;
}
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