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GTK2
GTK2.Gnome2Canvas
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Method GTK2.Gnome2Canvas()->set_pixels_per_unit()
- Method
set_pixels_per_unit
Gnome2.Canvas set_pixels_per_unit(float n)
- Description
Sets the zooming factor of a canvas by specifying the number of pixels that
correspond to one canvas unit.
The anchor point for zooming, i.e. the point that stays fixed and all
others zoom inwards or outwards from it, depends on whether the canvas is
set to center the scrolling region or not. You can contorl this using the
set_center_scroll_region() function. If the canvas is set to center the
scroll region, then the center of the canvas window is used as the anchor
point for zooming. Otherwise, the upper-left corner of the canvas window
is used as the anchor point.
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