* Alexander Larsson <alexl@redhat.com>
*/
+#include "config.h"
+
#include "gtkoffscreenwindow.h"
+#include "gtkprivate.h"
+
/**
* SECTION:gtkoffscreenwindow
- * @short_description: A toplevel container widget used to manage offscreen
- * rendering of child widgets.
+ * @short_description: A toplevel to manage offscreen rendering of child widgets
* @title: GtkOffscreenWindow
*
- * #GtkOffscreenWindow is strictly intended to be used for obtaining
+ * GtkOffscreenWindow is strictly intended to be used for obtaining
* snapshots of widgets that are not part of a normal widget hierarchy.
- * It differs from gtk_widget_get_snapshot() in that the widget you
- * want to get a snapshot of need not be displayed on the user's screen
- * as a part of a widget hierarchy. However, since #GtkOffscreenWindow
- * is a toplevel widget you cannot obtain snapshots of a full window
- * with it since you cannot pack a toplevel widget in another toplevel.
+ * Since #GtkOffscreenWindow is a toplevel widget you cannot obtain
+ * snapshots of a full window with it since you cannot pack a toplevel
+ * widget in another toplevel.
*
* The idea is to take a widget and manually set the state of it,
- * add it to a #GtkOffscreenWindow and then retrieve the snapshot
- * as a #GdkPixmap or #GdkPixbuf.
+ * add it to a GtkOffscreenWindow and then retrieve the snapshot
+ * as a #cairo_surface_t or #GdkPixbuf.
*
- * #GtkOffscreenWindow derives from #GtkWindow only as an implementation
+ * GtkOffscreenWindow derives from #GtkWindow only as an implementation
* detail. Applications should not use any API specific to #GtkWindow
* to operate on this object. It should be treated as a #GtkBin that
* has no parent widget.
*
- * When contained offscreen widgets are redrawn, #GtkOffscreenWindow
+ * When contained offscreen widgets are redrawn, GtkOffscreenWindow
* will emit a #GtkWidget::damage-event signal.
*/
requisition->height = border_width * 2;
child = gtk_bin_get_child (bin);
- if (gtk_widget_get_visible (child))
+
+ if (child != NULL && gtk_widget_get_visible (child))
{
GtkRequisition child_req;
- gtk_widget_size_request (child, &child_req);
+ gtk_widget_get_preferred_size (child, &child_req, NULL);
requisition->width += child_req.width;
requisition->height += child_req.height;
GtkWidget *child;
gint border_width;
- widget->allocation = *allocation;
+ gtk_widget_set_allocation (widget, allocation);
border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
if (gtk_widget_get_realized (widget))
- gdk_window_move_resize (widget->window,
+ gdk_window_move_resize (gtk_widget_get_window (widget),
allocation->x,
allocation->y,
allocation->width,
allocation->height);
child = gtk_bin_get_child (bin);
- if (gtk_widget_get_visible (child))
+
+ if (child != NULL && gtk_widget_get_visible (child))
{
GtkAllocation child_alloc;
static void
gtk_offscreen_window_realize (GtkWidget *widget)
{
+ GtkAllocation allocation;
GtkBin *bin;
GtkWidget *child;
+ GdkWindow *window;
GdkWindowAttr attributes;
gint attributes_mask;
gint border_width;
border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
- attributes.x = widget->allocation.x;
- attributes.y = widget->allocation.y;
- attributes.width = widget->allocation.width;
- attributes.height = widget->allocation.height;
+ gtk_widget_get_allocation (widget, &allocation);
+
+ attributes.x = allocation.x;
+ attributes.y = allocation.y;
+ attributes.width = allocation.width;
+ attributes.height = allocation.height;
attributes.window_type = GDK_WINDOW_OFFSCREEN;
attributes.event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;
attributes.visual = gtk_widget_get_visual (widget);
- attributes.colormap = gtk_widget_get_colormap (widget);
attributes.wclass = GDK_INPUT_OUTPUT;
- attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
+ attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
- widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
- &attributes, attributes_mask);
- gdk_window_set_user_data (widget->window, widget);
+ window = gdk_window_new (gtk_widget_get_parent_window (widget),
+ &attributes, attributes_mask);
+ gtk_widget_set_window (widget, window);
+ gdk_window_set_user_data (window, widget);
child = gtk_bin_get_child (bin);
if (child)
- gtk_widget_set_parent_window (child, widget->window);
-
- widget->style = gtk_style_attach (widget->style, widget->window);
+ gtk_widget_set_parent_window (child, window);
- gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
+ gtk_widget_style_attach (widget);
+ gtk_style_set_background (gtk_widget_get_style (widget),
+ window, GTK_STATE_NORMAL);
}
static void
GtkAllocation allocation = { 0, 0 };
GtkRequisition requisition;
- gtk_widget_size_request (widget, &requisition);
+ gtk_widget_get_preferred_size (widget, &requisition, NULL);
allocation.width = requisition.width;
allocation.height = requisition.height;
gboolean need_resize;
GtkContainer *container;
- GTK_WIDGET_SET_FLAGS (widget, GTK_VISIBLE);
+ _gtk_widget_set_visible_flag (widget, TRUE);
container = GTK_CONTAINER (widget);
need_resize = _gtk_container_get_need_resize (container) || !gtk_widget_get_realized (widget);
static void
gtk_offscreen_window_hide (GtkWidget *widget)
{
- GTK_WIDGET_UNSET_FLAGS (widget, GTK_VISIBLE);
+ _gtk_widget_set_visible_flag (widget, FALSE);
gtk_widget_unmap (widget);
}
* gtk_offscreen_window_new:
*
* Creates a toplevel container widget that is used to retrieve
- * snapshots of widgets without showing them on the screen. For
- * widgets that are on the screen and part of a normal widget
- * hierarchy, gtk_widget_get_snapshot() can be used instead.
+ * snapshots of widgets without showing them on the screen.
*
* Return value: A pointer to a #GtkWidget
*
}
/**
- * gtk_offscreen_window_get_pixmap:
+ * gtk_offscreen_window_get_surface:
* @offscreen: the #GtkOffscreenWindow contained widget.
*
* Retrieves a snapshot of the contained widget in the form of
- * a #GdkPixmap. If you need to keep this around over window
+ * a #cairo_surface_t. If you need to keep this around over window
* resizes then you should add a reference to it.
*
- * Returns: A #GdkPixmap pointer to the offscreen pixmap, or %NULL.
+ * Returns: (transfer none): A #cairo_surface_t pointer to the offscreen
+ * surface, or %NULL.
*
* Since: 2.20
*/
-GdkPixmap *
-gtk_offscreen_window_get_pixmap (GtkOffscreenWindow *offscreen)
+cairo_surface_t *
+gtk_offscreen_window_get_surface (GtkOffscreenWindow *offscreen)
{
g_return_val_if_fail (GTK_IS_OFFSCREEN_WINDOW (offscreen), NULL);
- return gdk_offscreen_window_get_pixmap (GTK_WIDGET (offscreen)->window);
+ return gdk_offscreen_window_get_surface (gtk_widget_get_window (GTK_WIDGET (offscreen)));
}
/**
* and the application should unreference it once it is no longer
* needed.
*
- * Returns: A #GdkPixbuf pointer, or %NULL.
+ * Returns: (transfer full): A #GdkPixbuf pointer, or %NULL.
*
* Since: 2.20
*/
GdkPixbuf *
gtk_offscreen_window_get_pixbuf (GtkOffscreenWindow *offscreen)
{
- GdkPixmap *pixmap = NULL;
+ cairo_surface_t *surface;
GdkPixbuf *pixbuf = NULL;
+ GdkWindow *window;
g_return_val_if_fail (GTK_IS_OFFSCREEN_WINDOW (offscreen), NULL);
- pixmap = gdk_offscreen_window_get_pixmap (GTK_WIDGET (offscreen)->window);
+ window = gtk_widget_get_window (GTK_WIDGET (offscreen));
+ surface = gdk_offscreen_window_get_surface (window);
- if (pixmap != NULL)
+ if (surface != NULL)
{
- gint width, height;
-
- gdk_drawable_get_size (pixmap, &width, &height);
-
- pixbuf = gdk_pixbuf_get_from_drawable (NULL, pixmap, NULL,
- 0, 0, 0, 0,
- width, height);
+ pixbuf = gdk_pixbuf_get_from_surface (surface,
+ 0, 0,
+ gdk_window_get_width (window),
+ gdk_window_get_height (window));
}
return pixbuf;
projects / ~andy / gtk / blobdiff