diff options
Diffstat (limited to 'gtk/gtkwidget.c')
| -rw-r--r-- | gtk/gtkwidget.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c index 78e425be71..1f4f9fbd09 100644 --- a/gtk/gtkwidget.c +++ b/gtk/gtkwidget.c @@ -127,6 +127,7 @@ enum { QUERY_TOOLTIP, KEYNAV_FAILED, DRAG_FAILED, + DAMAGE_EVENT, LAST_SIGNAL }; @@ -1994,6 +1995,28 @@ gtk_widget_class_init (GtkWidgetClass *klass) GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE); /** + * GtkWidget::damage-event: + * @widget: the object which received the signal + * @event: the #GdkEventExpose event + * + * Emitted when a redirected window belonging to @widget gets drawn into. + * The region/area members of the event shows what area of the redirected + * drawable was drawn into. + * + * Returns: %TRUE to stop other handlers from being invoked for the event. + * %FALSE to propagate the event further. + * + * Since: 2.16 + */ + widget_signals[DAMAGE_EVENT] = + g_signal_new ("damage_event", + G_TYPE_FROM_CLASS (gobject_class), + G_SIGNAL_RUN_LAST, 0, + _gtk_boolean_handled_accumulator, NULL, + _gtk_marshal_BOOLEAN__BOXED, + G_TYPE_BOOLEAN, 1, + GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE); +/** * GtkWidget::grab-broken-event: * @widget: the object which received the signal * @event: the #GdkEventGrabBroken event @@ -4667,6 +4690,9 @@ gtk_widget_event_internal (GtkWidget *widget, case GDK_GRAB_BROKEN: signal_num = GRAB_BROKEN; break; + case GDK_DAMAGE: + signal_num = DAMAGE_EVENT; + break; default: g_warning ("gtk_widget_event(): unhandled event type: %d", event->type); signal_num = -1; @@ -8285,6 +8311,53 @@ gtk_widget_unref (GtkWidget *widget) g_object_unref ((GObject*) widget); } +/** + * gtk_widget_get_snapshot: + * @widget: a #GtkWidget + * + * Creates a #GdkPixmap of the contents of the widget and its + * children. Works even if the widget is obscured. + * Note that the depth and visual of the resulting pixmap is dependent + * on the widget being snapshot and likely differs from those of a target + * widget displaying the pixmap. Use gdk_pixbuf_get_from_drawable() + * to convert the pixmap to a visual independant representation. + * + * Return value: #GdkPixmap of the widget + * Since: 2.16 + **/ +GdkPixmap* +gtk_widget_get_snapshot (GtkWidget *widget) +{ + GdkPixmap *pixmap; + int x, y; + + if (!GTK_WIDGET_REALIZED (widget)) + gtk_widget_realize (widget); + + pixmap = gdk_pixmap_new (widget->window, + widget->allocation.width, + widget->allocation.height, + gdk_drawable_get_depth (widget->window)); + if (GTK_WIDGET_NO_WINDOW (widget)) + { + x = widget->allocation.x; + y = widget->allocation.y; + } + else + x = y = 0; + + gdk_window_redirect_to_drawable (widget->window, + pixmap, + x, y, + 0, 0, + widget->allocation.width, + widget->allocation.height); + gtk_widget_queue_draw (widget); + gdk_window_process_updates (widget->window, TRUE); + gdk_window_remove_redirection (widget->window); + + return pixmap; +} /* style properties */ |