tests: Add simple test for image clipboard

tests/Makefile.am

@@ -40,6 +40,7 @@ noinst_PROGRAMS =  $(TEST_PROGS)	\
 	testbuttons			\
 	testcairo			\
 	testcalendar			\
+	testclipboard			\
 	testcombo			\
 	testcombochange			\
 	testcellrenderertext		\
@@ -148,6 +149,7 @@ testbbox_DEPENDENCIES = $(TEST_DEPS)
 testbuttons_DEPENDENCIES = $(TEST_DEPS)
 testcairo_DEPENDENCIES = $(TEST_DEPS)
 testcalendar_DEPENDENCIES = $(TEST_DEPS)
+testclipboard_DEPENDENCIES = $(TEST_DEPS)
 testcombo_DEPENDENCIES = $(TEST_DEPS)
 testcombochange_DEPENDENCIES = $(TEST_DEPS)
 testcellrenderertext_DEPENDENCIES = $(TEST_DEPS)
@@ -234,6 +236,7 @@ testboxcss_LDADD = $(LDADDS)
 testbuttons_LDADD = $(LDADDS)
 testcairo_LDADD = $(LDADDS)
 testcalendar_LDADD = $(LDADDS)
+testclipboard_LDADD = $(LDADDS)
 testcombo_LDADD = $(LDADDS)
 testcombochange_LDADD = $(LDADDS)
 testcellrenderertext_LDADD = $(LDADDS)

tests/testclipboard.c

@@ -0,0 +1,140 @@
+/*
+ * Copyright (C) 2011  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>
+
+GtkClipboard *clipboard;
+GtkWidget *image;
+GtkWidget *label;
+
+#define SIZE 256.
+
+static void
+image_request_cb (GtkClipboard *clipboard,
+                  GdkPixbuf *pixbuf,
+                  gpointer data)
+{
+  GdkPixbuf *copy;
+  int height;
+  int width;
+  gdouble factor;
+  char *str;
+
+  if (pixbuf != NULL)
+    {
+      height = gdk_pixbuf_get_height (pixbuf);
+      width = gdk_pixbuf_get_width (pixbuf);
+
+      factor = MAX ((SIZE / height), (SIZE / width));
+
+      copy = gdk_pixbuf_scale_simple (pixbuf, width * factor, height * factor, GDK_INTERP_BILINEAR);
+      gtk_image_set_from_pixbuf (GTK_IMAGE (image), copy);
+      g_object_unref (copy);
+      str = g_strdup_printf ("<b>Image</b> %d \342\234\225 %d", width, height);
+    }
+  else
+    {
+      str = g_strdup ("<b>No image data</b>");
+    }
+  gtk_label_set_markup (GTK_LABEL (label), str);
+  g_free (str);
+}
+
+static void
+update_display (void)
+{
+  gtk_clipboard_request_image (clipboard, image_request_cb, NULL);
+}
+
+static void
+on_owner_change (GtkClipboard *clipboard,
+                 GdkEvent     *event,
+                 gpointer      user_data)
+{
+  update_display ();
+}
+
+static void
+on_response (GtkDialog *dialog,
+             gint       response_id,
+             gpointer   user_data)
+{
+  switch (response_id)
+    {
+    case 0:
+      /* copy large */
+      {
+        GtkIconTheme *theme;
+        GdkPixbuf *pixbuf;
+        theme = gtk_icon_theme_get_default ();
+        pixbuf = gtk_icon_theme_load_icon (theme, "terminal", 1600, 0, NULL);
+        gtk_clipboard_set_image (clipboard, pixbuf);
+      }
+      break;
+    case 1:
+      /* copy small */
+      {
+        GtkIconTheme *theme;
+        GdkPixbuf *pixbuf;
+        theme = gtk_icon_theme_get_default ();
+        pixbuf = gtk_icon_theme_load_icon (theme, "terminal", 48, 0, NULL);
+        gtk_clipboard_set_image (clipboard, pixbuf);
+      }
+      break;
+    case GTK_RESPONSE_CLOSE:
+    default:
+      gtk_main_quit ();
+      break;
+    }
+}
+
+int
+main (int argc, char **argv)
+{
+  GtkWidget *window;
+
+  gtk_init (&argc, &argv);
+
+  window = gtk_dialog_new_with_buttons ("Clipboard",
+                                        NULL,
+                                        0,
+                                        "Copy Large", 0,
+                                        "Copy Small", 1,
+                                        GTK_STOCK_CLOSE, GTK_RESPONSE_CLOSE,
+                                        NULL);
+
+  image = gtk_image_new ();
+  gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (window))), image, FALSE, FALSE, 0);
+  label = gtk_label_new ("No data found");
+  gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (window))), label, FALSE, FALSE, 0);
+
+  g_signal_connect (window, "response", G_CALLBACK (on_response), NULL);
+
+  clipboard = gtk_clipboard_get_for_display (gtk_widget_get_display (window),
+                                             GDK_SELECTION_CLIPBOARD);
+  g_signal_connect (clipboard, "owner-change", G_CALLBACK (on_owner_change), NULL);
+
+  update_display ();
+
+  gtk_widget_show_all (window);
+
+  gtk_main ();
+
+  return 0;
+}