/usr/share/gtk-3.0/demo/clipboard.c is in gtk-3-examples 3.4.2-0ubuntu0.9.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 | /* Clipboard
*
* GtkClipboard 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 <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 */
if(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);
}
static GdkPixbuf *
get_image_pixbuf (GtkImage *image)
{
gchar *stock_id;
GtkIconSize size;
switch (gtk_image_get_storage_type (image))
{
case GTK_IMAGE_PIXBUF:
return g_object_ref (gtk_image_get_pixbuf (image));
case GTK_IMAGE_STOCK:
gtk_image_get_stock (image, &stock_id, &size);
return gtk_widget_render_icon_pixbuf (GTK_WIDGET (image),
stock_id, size);
default:
g_warning ("Image storage type %d not handled",
gtk_image_get_storage_type (image));
return NULL;
}
}
static void
drag_begin (GtkWidget *widget,
GdkDragContext *context,
gpointer data)
{
GdkPixbuf *pixbuf;
pixbuf = get_image_pixbuf (GTK_IMAGE (data));
gtk_drag_set_icon_pixbuf (context, pixbuf, -2, -2);
g_object_unref (pixbuf);
}
void
drag_data_get (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint info,
guint time,
gpointer data)
{
GdkPixbuf *pixbuf;
pixbuf = get_image_pixbuf (GTK_IMAGE (data));
gtk_selection_data_set_pixbuf (selection_data, pixbuf);
g_object_unref (pixbuf);
}
static void
drag_data_received (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *selection_data,
guint info,
guint32 time,
gpointer data)
{
GdkPixbuf *pixbuf;
if (gtk_selection_data_get_length (selection_data) > 0)
{
pixbuf = gtk_selection_data_get_pixbuf (selection_data);
gtk_image_set_from_pixbuf (GTK_IMAGE (data), pixbuf);
g_object_unref (pixbuf);
}
}
static void
copy_image (GtkMenuItem *item,
gpointer data)
{
GtkClipboard *clipboard;
GdkPixbuf *pixbuf;
clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
pixbuf = get_image_pixbuf (GTK_IMAGE (data));
gtk_clipboard_set_image (clipboard, pixbuf);
g_object_unref (pixbuf);
}
static void
paste_image (GtkMenuItem *item,
gpointer data)
{
GtkClipboard *clipboard;
GdkPixbuf *pixbuf;
clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
pixbuf = gtk_clipboard_wait_for_image (clipboard);
if (pixbuf)
{
gtk_image_set_from_pixbuf (GTK_IMAGE (data), pixbuf);
g_object_unref (pixbuf);
}
}
static gboolean
button_press (GtkWidget *widget,
GdkEventButton *button,
gpointer data)
{
GtkWidget *menu;
GtkWidget *item;
if (button->button != GDK_BUTTON_SECONDARY)
return FALSE;
menu = gtk_menu_new ();
item = gtk_image_menu_item_new_from_stock (GTK_STOCK_COPY, NULL);
g_signal_connect (item, "activate", G_CALLBACK (copy_image), data);
gtk_widget_show (item);
gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
item = gtk_image_menu_item_new_from_stock (GTK_STOCK_PASTE, NULL);
g_signal_connect (item, "activate", G_CALLBACK (paste_image), data);
gtk_widget_show (item);
gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
gtk_menu_popup (GTK_MENU (menu), NULL, NULL, NULL, NULL, 3, button->time);
return TRUE;
}
GtkWidget *
do_clipboard (GtkWidget *do_widget)
{
if (!window)
{
GtkWidget *vbox, *hbox;
GtkWidget *label;
GtkWidget *entry, *button;
GtkWidget *ebox, *image;
GtkClipboard *clipboard;
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_screen (GTK_WINDOW (window),
gtk_widget_get_screen (do_widget));
gtk_window_set_title (GTK_WINDOW (window), "Clipboard demo");
g_signal_connect (window, "destroy",
G_CALLBACK (gtk_widget_destroyed), &window);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 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_box_new (GTK_ORIENTATION_HORIZONTAL, 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_box_new (GTK_ORIENTATION_HORIZONTAL, 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);
label = gtk_label_new ("Images can be transferred via the clipboard, too");
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
gtk_container_set_border_width (GTK_CONTAINER (hbox), 8);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
/* Create the first image */
image = gtk_image_new_from_stock (GTK_STOCK_DIALOG_WARNING,
GTK_ICON_SIZE_BUTTON);
ebox = gtk_event_box_new ();
gtk_container_add (GTK_CONTAINER (ebox), image);
gtk_container_add (GTK_CONTAINER (hbox), ebox);
/* make ebox a drag source */
gtk_drag_source_set (ebox, GDK_BUTTON1_MASK, NULL, 0, GDK_ACTION_COPY);
gtk_drag_source_add_image_targets (ebox);
g_signal_connect (ebox, "drag-begin",
G_CALLBACK (drag_begin), image);
g_signal_connect (ebox, "drag-data-get",
G_CALLBACK (drag_data_get), image);
/* accept drops on ebox */
gtk_drag_dest_set (ebox, GTK_DEST_DEFAULT_ALL,
NULL, 0, GDK_ACTION_COPY);
gtk_drag_dest_add_image_targets (ebox);
g_signal_connect (ebox, "drag-data-received",
G_CALLBACK (drag_data_received), image);
/* context menu on ebox */
g_signal_connect (ebox, "button-press-event",
G_CALLBACK (button_press), image);
/* Create the second image */
image = gtk_image_new_from_stock (GTK_STOCK_STOP,
GTK_ICON_SIZE_BUTTON);
ebox = gtk_event_box_new ();
gtk_container_add (GTK_CONTAINER (ebox), image);
gtk_container_add (GTK_CONTAINER (hbox), ebox);
/* make ebox a drag source */
gtk_drag_source_set (ebox, GDK_BUTTON1_MASK, NULL, 0, GDK_ACTION_COPY);
gtk_drag_source_add_image_targets (ebox);
g_signal_connect (ebox, "drag-begin",
G_CALLBACK (drag_begin), image);
g_signal_connect (ebox, "drag-data-get",
G_CALLBACK (drag_data_get), image);
/* accept drops on ebox */
gtk_drag_dest_set (ebox, GTK_DEST_DEFAULT_ALL,
NULL, 0, GDK_ACTION_COPY);
gtk_drag_dest_add_image_targets (ebox);
g_signal_connect (ebox, "drag-data-received",
G_CALLBACK (drag_data_received), image);
/* context menu on ebox */
g_signal_connect (ebox, "button-press-event",
G_CALLBACK (button_press), image);
/* tell the clipboard manager to make the data persistent */
clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
gtk_clipboard_set_can_store (clipboard, NULL, 0);
}
if (!gtk_widget_get_visible (window))
gtk_widget_show_all (window);
else
{
gtk_widget_destroy (window);
window = NULL;
}
return window;
}
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