gtk.OffscreenWindow
gtk.OffscreenWindow — a toplevel container widget used to manage offscreen rendering of child widgets (new in PyGTK 2.22)
Synopsis
class gtk.OffscreenWindow(gtk.Window): |
Ancestry
+--GObject +-- gtk.Object +-- gtk.Widget +-- gtk.Container +-- gtk.Bin +-- gtk.Window +-- gtk.OffscreenWindow
gtk.OffscreenWindow Signal Prototypes
Description
Note
This widget is available in PyGTK 2.22 and above.
gtk.OffscreenWindow
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 gtk.OffscreenWindow
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
gtk.OffscreenWindow
and then retrieve
the snapshot as a gtk.gdk.Pixmap
or
gtk.gdk.Pixbuf
.
gtk.OffscreenWindow
derives
from gtk.Window
only as an implementation
detail. Applications should not use any API specific to gtk.Window
to operate on this object. It should be treated as a gtk.Bin
that has no parent widget.
When contained offscreen widgets are redrawn,
gtk.OffscreenWindow
will emit a
"damage-event" signal.
Constructor
gtk.OffscreenWindow ()
Returns : | A pointer to a gtk.Widget |
Note
This constructor is available in PyGTK 2.22 and above.
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.
Methods
gtk.OffscreenWindow.get_pixmap
def get_pixmap()
Returns : | A gtk.gdk.Pixmap , or None . |
Note
This method is available in PyGTK 2.22 and above.
Retrieves a snapshot of the contained widget in the form of a
gtk.gdk.Pixmap
.
gtk.OffscreenWindow.get_pixbuf
def get_pixbuf()
Returns : | A gtk.gdk.Pixbuf , or None . |
Note
This method is available in PyGTK 2.22 and above.
Retrieves a snapshot of the contained widget in the form of a
gtk.gdk.Pixbuf
.