Add clipboard demo.

2004-07-29  Anders Carlsson  <andersca@gnome.org>

	* demos/gtk-demo/Makefile.am:
	* demos/gtk-demo/clipboard.c: (copy_button_clicked),
	(paste_received), (paste_button_clicked), (do_clipboard):
	Add clipboard demo.

2 files changed, 125 insertions, 0 deletions

diff --git a/demos/gtk-demo/Makefile.am b/demos/gtk-demo/Makefile.am
index 7557fb91bb..65a52ca9b8 100644
--- a/demos/gtk-demo/Makefile.am
+++ b/demos/gtk-demo/Makefile.am
@@ -8,6 +8,7 @@ demos =						\
 	appwindow.c				\
 	button_box.c				\
 	changedisplay.c				\
+	clipboard.c				\
 	colorsel.c				\
 	dialog.c				\
 	drawingarea.c				\
diff --git a/demos/gtk-demo/clipboard.c b/demos/gtk-demo/clipboard.c
new file mode 100644
index 0000000000..c4f04c7540
--- /dev/null
+++ b/demos/gtk-demo/clipboard.c
@@ -0,0 +1,124 @@
+/* Clipboard
+ *
+ * GtkClipboard is used for clipboard handling. This demo shows how to
+ * copy and paste text to and from the clipboard.
+ */
+
+#include <config.h>
+#include <gtk/gtk.h>
+#include <string.h>
+
+static GtkWidget *window = NULL;
+
+void
+copy_button_clicked (GtkWidget *button,
+		     gpointer   user_data)
+{
+  GtkWidget *entry;
+  GtkClipboard *clipboard;
+
+  entry = GTK_WIDGET (user_data);
+  
+  /* Get the clipboard object */
+  clipboard = gtk_widget_get_clipboard (entry,
+					GDK_SELECTION_CLIPBOARD);
+
+  /* Set clipboard text */
+  gtk_clipboard_set_text (clipboard, gtk_entry_get_text (GTK_ENTRY (entry)), -1);
+}
+
+void
+paste_received (GtkClipboard *clipboard,
+		const gchar  *text,
+		gpointer      user_data)
+{
+  GtkWidget *entry;
+
+  entry = GTK_WIDGET (user_data);
+  
+  /* Set the entry text */
+  gtk_entry_set_text (GTK_ENTRY (entry), text);
+}
+
+void
+paste_button_clicked (GtkWidget *button,
+		     gpointer   user_data)
+{
+  GtkWidget *entry;
+  GtkClipboard *clipboard;
+
+  entry = GTK_WIDGET (user_data);
+  
+  /* Get the clipboard object */
+  clipboard = gtk_widget_get_clipboard (entry,
+					GDK_SELECTION_CLIPBOARD);
+
+  /* Request the contents of the clipboard, contents_received will be
+     called when we do get the contents.
+   */
+  gtk_clipboard_request_text (clipboard,
+			      paste_received, entry);
+}
+
+GtkWidget *
+do_clipboard (GtkWidget *do_widget)
+{
+  if (!window)
+    {
+      GtkWidget *vbox, *hbox;
+      GtkWidget *label;
+      GtkWidget *entry, *button;
+      
+      window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+      vbox = gtk_vbox_new (FALSE, 0);
+      gtk_container_set_border_width (GTK_CONTAINER (vbox), 8);
+      
+      gtk_container_add (GTK_CONTAINER (window), vbox);
+
+      label = gtk_label_new ("\"Copy\" will copy the text\nin the entry to the clipboard");
+      
+      gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
+
+      hbox = gtk_hbox_new (FALSE, 4);
+      gtk_container_set_border_width (GTK_CONTAINER (hbox), 8);
+      gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
+
+      /* Create the first entry */
+      entry = gtk_entry_new ();
+      gtk_box_pack_start (GTK_BOX (hbox), entry, TRUE, TRUE, 0);
+      
+      /* Create the button */
+      button = gtk_button_new_from_stock (GTK_STOCK_COPY);
+      gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
+      g_signal_connect (button, "clicked",
+			G_CALLBACK (copy_button_clicked), entry);
+
+      label = gtk_label_new ("\"Paste\" will paste the text from the clipboard to the entry");
+      gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
+
+      hbox = gtk_hbox_new (FALSE, 4);
+      gtk_container_set_border_width (GTK_CONTAINER (hbox), 8);
+      gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
+
+      /* Create the second entry */
+      entry = gtk_entry_new ();
+      gtk_box_pack_start (GTK_BOX (hbox), entry, TRUE, TRUE, 0);
+      
+      /* Create the button */
+      button = gtk_button_new_from_stock (GTK_STOCK_PASTE);
+      gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
+      g_signal_connect (button, "clicked",
+			G_CALLBACK (paste_button_clicked), entry);
+      
+    }
+
+  if (!GTK_WIDGET_VISIBLE (window))
+    gtk_widget_show_all (window);
+  else
+    {
+      gtk_widget_destroy (window);
+      window = NULL;
+    }
+
+  return window;
+}