Widget.cairoTransformToWindow

Transforms the given cairo context cr that from widget-relative coordinates to window-relative coordinates. If the widget's window is not an ancestor of window, no modification will be applied. This is the inverse to the transformation GTK applies when preparing an expose event to be emitted with the "draw" signal. It is intended to help porting multiwindow widgets from GTK+ 2 to the rendering architecture of GTK+ 3.

class Widget
static
void
cairoTransformToWindow

Parameters

cr Context

the cairo context to transform

widget Widget

the widget the context is currently centered for

window Window

the window to transform the context to Since 3.0

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