set_scale_factor

Sets the scaling factor for the Cairo surface used by this.

This function should rarely be used.

The default scaling factor of a Canvas content uses the window_scaling_factor property, which is set by the windowing system. By using this function it is possible to override that setting.

Changing the scale factor will invalidate the this.

Parameters:

this	a Canvas
scale	the scale factor, or -1 for the default