on-size

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`on-size`

Called when the window is resized. The window's new size is provided to the method. (The size values are for the entire window, not just the client area.)

(send a-canvas:wide-snip-mixin on-size width height) -> void
width : exact integer in [0, 10000]
height : exact integer in [0, 10000]
If the canvas is dispalying an editor, its on-display-size method is called.
Adjusts the sizes of the marked snips.
See add-wide-snip and add-tall-snip.

PLT