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/* Clipboard
*
* GdkClipboard is used for clipboard handling. This demo shows how to
* copy and paste text to and from the clipboard.
*
* It also shows how to transfer images via the clipboard or via
* drag-and-drop, and how to make clipboard contents persist after
* the application exits. Clipboard persistence requires a clipboard
* manager to run.
*/
#include <glib/gi18n.h>
#include <gtk/gtk.h>
#include <string.h>
#include "demoimage.h"
static GtkWidget *window = NULL;
static void
copy_button_clicked (GtkWidget *button,
gpointer user_data)
{
GtkWidget *entry;
GdkClipboard *clipboard;
entry = GTK_WIDGET (user_data);
/* Get the clipboard object */
clipboard = gtk_widget_get_clipboard (entry);
/* Set clipboard text */
gdk_clipboard_set_text (clipboard, gtk_editable_get_text (GTK_EDITABLE (entry)));
}
static void
paste_received (GObject *source_object,
GAsyncResult *result,
gpointer user_data)
{
GdkClipboard *clipboard;
GtkWidget *entry;
char *text;
GError *error = NULL;
clipboard = GDK_CLIPBOARD (source_object);
entry = GTK_WIDGET (user_data);
/* Get the resulting text of the read operation */
text = gdk_clipboard_read_text_finish (clipboard, result, &error);
if (text)
{
/* Set the entry text */
gtk_editable_set_text (GTK_EDITABLE (entry), text);
g_free (text);
}
else
{
GtkWidget *dialog;
/* Show an error about why pasting failed.
* Usually you probably want to ignore such failures,
* but for demonstration purposes, we show the error.
*/
dialog = gtk_message_dialog_new (GTK_WINDOW (window),
GTK_DIALOG_DESTROY_WITH_PARENT | GTK_DIALOG_MODAL,
GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE,
"Could not paste text: %s",
error->message);
g_signal_connect (dialog, "response",
G_CALLBACK (gtk_window_destroy), NULL);
gtk_widget_show (dialog);
g_error_free (error);
}
}
static void
paste_button_clicked (GtkWidget *button,
gpointer user_data)
{
GtkWidget *entry;
GdkClipboard *clipboard;
entry = GTK_WIDGET (user_data);
/* Get the clipboard object */
clipboard = gtk_widget_get_clipboard (entry);
/* Request the contents of the clipboard, contents_received will be
called when we do get the contents.
*/
gdk_clipboard_read_text_async (clipboard, NULL, paste_received, entry);
}
GtkWidget *
do_clipboard (GtkWidget *do_widget)
{
if (!window)
{
GtkWidget *vbox, *hbox;
GtkWidget *label;
GtkWidget *entry, *button;
GtkWidget *image;
window = gtk_window_new ();
gtk_window_set_display (GTK_WINDOW (window),
gtk_widget_get_display (do_widget));
gtk_window_set_title (GTK_WINDOW (window), "Clipboard");
g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_widget_set_margin_start (vbox, 8);
gtk_widget_set_margin_end (vbox, 8);
gtk_widget_set_margin_top (vbox, 8);
gtk_widget_set_margin_bottom (vbox, 8);
gtk_window_set_child (GTK_WINDOW (window), vbox);
label = gtk_label_new ("\"Copy\" will copy the text\nin the entry to the clipboard");
gtk_box_append (GTK_BOX (vbox), label);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
gtk_widget_set_margin_start (hbox, 8);
gtk_widget_set_margin_end (hbox, 8);
gtk_widget_set_margin_top (hbox, 8);
gtk_widget_set_margin_bottom (hbox, 8);
gtk_box_append (GTK_BOX (vbox), hbox);
/* Create the first entry */
entry = gtk_entry_new ();
gtk_box_append (GTK_BOX (hbox), entry);
/* Create the button */
button = gtk_button_new_with_mnemonic (_("_Copy"));
gtk_box_append (GTK_BOX (hbox), button);
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_append (GTK_BOX (vbox), label);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
gtk_widget_set_margin_start (hbox, 8);
gtk_widget_set_margin_end (hbox, 8);
gtk_widget_set_margin_top (hbox, 8);
gtk_widget_set_margin_bottom (hbox, 8);
gtk_box_append (GTK_BOX (vbox), hbox);
/* Create the second entry */
entry = gtk_entry_new ();
gtk_box_append (GTK_BOX (hbox), entry);
/* Create the button */
button = gtk_button_new_with_mnemonic (_("_Paste"));
gtk_box_append (GTK_BOX (hbox), button);
g_signal_connect (button, "clicked",
G_CALLBACK (paste_button_clicked), entry);
label = gtk_label_new ("Images can be transferred via the clipboard, too");
gtk_box_append (GTK_BOX (vbox), label);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
gtk_widget_set_margin_start (hbox, 8);
gtk_widget_set_margin_end (hbox, 8);
gtk_widget_set_margin_top (hbox, 8);
gtk_widget_set_margin_bottom (hbox, 8);
gtk_box_append (GTK_BOX (vbox), hbox);
/* Create the first image */
image = demo_image_new ("dialog-warning");
gtk_box_append (GTK_BOX (hbox), image);
/* Create the second image */
image = demo_image_new ("process-stop");
gtk_box_append (GTK_BOX (hbox), image);
/* Create the third image */
image = demo_image_new ("weather-clear");
gtk_box_append (GTK_BOX (hbox), image);
}
if (!gtk_widget_get_visible (window))
gtk_widget_show (window);
else
gtk_window_destroy (GTK_WINDOW (window));
return window;
}
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