[gtk+/wip/clipboard: 8/8] Add an interactive test for GdkClipboard

[Matthias Clasen <matthiasc src gnome org>]

commit 99ed426f015e2947ccd5c54bb2b62121d11fa617
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Jun 16 00:28:38 2014 -0400

    Add an interactive test for GdkClipboard
    
    This test can put text, images or data content on the clipboard
    and receive such data as well. Button sensitivity is updated
    based on the availability of suitable clipboard content.

 tests/Makefile.am      |    2 +
 tests/testclipboard2.c |  231 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 233 insertions(+), 0 deletions(-)
---
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 1cf7bf2..585bac2 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -45,6 +45,7 @@ noinst_PROGRAMS =  $(TEST_PROGS)      \
        testcairo                       \
        testcalendar                    \
        testclipboard                   \
+       testclipboard2                  \
        testcolorchooser                \
        testcombo                       \
        testcombochange                 \
@@ -189,6 +190,7 @@ testbuttons_DEPENDENCIES = $(TEST_DEPS)
 testcairo_DEPENDENCIES = $(TEST_DEPS)
 testcalendar_DEPENDENCIES = $(TEST_DEPS)
 testclipboard_DEPENDENCIES = $(TEST_DEPS)
+testclipboard2_DEPENDENCIES = $(TEST_DEPS)
 testcolorchooser_DEPENDENCIES = $(TEST_DEPS)
 testcombo_DEPENDENCIES = $(TEST_DEPS)
 testcombochange_DEPENDENCIES = $(TEST_DEPS)
diff --git a/tests/testclipboard2.c b/tests/testclipboard2.c
new file mode 100644
index 0000000..0af556a
--- /dev/null
+++ b/tests/testclipboard2.c
@@ -0,0 +1,231 @@
+#include <gtk/gtk.h>
+#include <string.h>
+
+static GdkClipboard *clipboard;
+
+static void
+clear (GtkWidget *entry)
+{
+  gdk_clipboard_clear (clipboard);
+}
+
+/* text */
+
+static void
+copy_text (GtkWidget *w)
+{
+  gdk_clipboard_set_text (clipboard, gtk_entry_get_text (GTK_ENTRY (w)));
+}
+
+static void
+text_received (GObject      *source,
+               GAsyncResult *res,
+               gpointer      data)
+{
+  gchar *text;
+  GtkWidget *entry = data;
+  GError *error = NULL;
+
+  text = gdk_clipboard_get_text_finish (GDK_CLIPBOARD (source), res, &error);
+  if (!text)
+    {
+      g_print ("error receiving text: %s\n", error ? error->message : "no error set");
+      if (error)
+        g_error_free (error);
+      return;
+    }
+
+  gtk_entry_set_text (GTK_ENTRY (entry), text);
+  g_free (text);
+}
+
+static void
+paste_text (GtkWidget *w)
+{
+  gdk_clipboard_get_text_async (clipboard, NULL, text_received, w);
+}
+
+static void
+has_text (GtkWidget *w)
+{
+  gtk_widget_set_sensitive (w, gdk_clipboard_text_available (clipboard));
+}
+
+/* image */
+
+static void
+copy_image (GtkWidget *w)
+{
+  gdk_clipboard_set_image (clipboard, gtk_image_get_pixbuf (GTK_IMAGE (w)));
+}
+
+static void
+image_received (GObject      *source,
+                GAsyncResult *res,
+                gpointer      data)
+{
+  GtkWidget *image = data;
+  GdkPixbuf *pixbuf;
+  GError *error = NULL;
+
+  pixbuf = gdk_clipboard_get_image_finish (GDK_CLIPBOARD (source), res, &error);
+  if (!pixbuf)
+    {
+      g_print ("error receiving image: %s\n", error ? error->message : "no error set");
+      if (error)
+        g_error_free (error);
+      return;
+    }
+
+  gtk_image_set_from_pixbuf (GTK_IMAGE (image), pixbuf);
+  g_object_unref (pixbuf);
+}
+
+static void
+paste_image (GtkWidget *w)
+{
+  gdk_clipboard_get_image_async (clipboard, NULL, image_received, w);
+}
+
+static void
+has_image (GtkWidget *w)
+{
+  gtk_widget_set_sensitive (w, gdk_clipboard_image_available (clipboard));
+}
+
+/* data */
+
+static void
+provider (GdkClipboard  *clipboard,
+          const gchar   *content_type,
+          GOutputStream *output,
+          gpointer       data)
+{
+  gchar *text = data;
+
+  g_output_stream_write_all (output, text, strlen (text), NULL, NULL, NULL);
+  g_output_stream_close (output, NULL, NULL);      
+}
+
+static void
+copy_data (GtkWidget *w)
+{
+  const gchar *types[2] = { "foo/bar", NULL };
+
+  gdk_clipboard_set_data (clipboard, types, provider,
+                          (gpointer)g_strdup (gtk_entry_get_text (GTK_ENTRY (w))), g_free);
+}
+
+static void
+data_received (GObject      *source,
+               GAsyncResult *res,
+               gpointer      data)
+{
+  GInputStream *is;
+  GError *error = NULL;
+  gchar buffer[128];
+  gssize size;
+  GtkWidget *w = data;
+
+  is = gdk_clipboard_get_data_finish (GDK_CLIPBOARD (source), res, &error);
+  if (!is)
+    return;
+
+  size = g_input_stream_read (is, buffer, 128, NULL, NULL);
+  if (size == -1)
+    {
+      g_object_unref (is);
+      return;
+    }
+
+  gtk_entry_set_text (GTK_ENTRY (w), buffer);
+  g_object_unref (is);
+}
+
+static void
+paste_data (GtkWidget *w)
+{
+  gdk_clipboard_get_data_async (clipboard, "foo/bar", NULL, data_received, w);
+}
+
+static void
+has_data (GtkWidget *w)
+{
+  gtk_widget_set_sensitive (w, gdk_clipboard_data_available (clipboard, "foo/bar"));
+}
+
+int
+main (int argc, char *argv[])
+{
+  GtkWidget *window;
+  GtkWidget *vbox;
+  GtkWidget *box;
+  GtkWidget *entry;
+  GtkWidget *button;
+  GtkWidget *image;
+
+  gtk_init (NULL, NULL);
+
+  clipboard = gdk_display_get_clipboard (gdk_display_get_default ());
+
+  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+  vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 10);
+  gtk_container_add (GTK_CONTAINER (window), vbox);
+
+  box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 10);
+  gtk_container_add (GTK_CONTAINER (vbox), box);
+  entry = gtk_entry_new ();
+  gtk_container_add (GTK_CONTAINER (box), entry);
+  button = gtk_button_new_with_label ("Copy");
+  gtk_container_add (GTK_CONTAINER (box), button);
+  g_signal_connect_swapped (button, "clicked", G_CALLBACK (copy_text), entry);
+  button = gtk_button_new_with_label ("Paste");
+  gtk_container_add (GTK_CONTAINER (box), button);
+  g_signal_connect_swapped (button, "clicked", G_CALLBACK (paste_text), entry);
+  g_signal_connect_swapped (clipboard, "changed", G_CALLBACK (has_text), button);
+  button = gtk_button_new_with_label ("Clear");
+  gtk_container_add (GTK_CONTAINER (box), button);
+  g_signal_connect_swapped (button, "clicked", G_CALLBACK (clear), entry);
+
+  box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 10);
+  gtk_container_add (GTK_CONTAINER (vbox), box);
+  image = gtk_image_new ();
+  if (argc > 1)
+    gtk_image_set_from_file (GTK_IMAGE (image), argv[1]);
+  else
+    gtk_image_set_from_resource (GTK_IMAGE (image), 
"/org/gtk/libgtk/theme/Adwaita/assets/slider-vert-scale-has-marks-above 2 png");
+  gtk_container_add (GTK_CONTAINER (box), image);
+  button = gtk_button_new_with_label ("Copy");
+  gtk_container_add (GTK_CONTAINER (box), button);
+  g_signal_connect_swapped (button, "clicked", G_CALLBACK (copy_image), image);
+  button = gtk_button_new_with_label ("Paste");
+  gtk_container_add (GTK_CONTAINER (box), button);
+  g_signal_connect_swapped (button, "clicked", G_CALLBACK (paste_image), image);
+  g_signal_connect_swapped (clipboard, "changed", G_CALLBACK (has_image), button);
+  button = gtk_button_new_with_label ("Clear");
+  gtk_container_add (GTK_CONTAINER (box), button);
+  g_signal_connect_swapped (button, "clicked", G_CALLBACK (clear), image);
+
+  box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 10);
+  gtk_container_add (GTK_CONTAINER (vbox), box);
+  entry = gtk_entry_new ();
+  gtk_container_add (GTK_CONTAINER (box), entry);
+  button = gtk_button_new_with_label ("Copy");
+  gtk_container_add (GTK_CONTAINER (box), button);
+  g_signal_connect_swapped (button, "clicked", G_CALLBACK (copy_data), entry);
+  button = gtk_button_new_with_label ("Paste");
+  gtk_container_add (GTK_CONTAINER (box), button);
+  g_signal_connect_swapped (button, "clicked", G_CALLBACK (paste_data), entry);
+  g_signal_connect_swapped (clipboard, "changed", G_CALLBACK (has_data), button);
+  button = gtk_button_new_with_label ("Clear");
+  gtk_container_add (GTK_CONTAINER (box), button);
+  g_signal_connect_swapped (button, "clicked", G_CALLBACK (clear), entry);
+
+  g_signal_emit_by_name (clipboard, "changed", 0);
+
+  gtk_widget_show_all (window);
+
+  gtk_main ();
+  
+  return 0;
+}