[ Version ( since = "1.18" ) ]
public void set_scale_factor (int scale)
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.
| this |
a Canvas |
| scale |
the scale factor, or -1 for the default |