shrink

Description:

public unowned RoundedRect? shrink (float top, float right, float bottom, float left)

Shrinks (or grows) the given rectangle by moving the 4 sides according to the offsets given.

The corner radii will be changed in a way that tries to keep the center of the corner circle intact. This emulates CSS behavior.

This function also works for growing rectangles if you pass negative values for the top, right, bottom or left.

this	The `GskRoundedRect` to shrink or grow
top	How far to move the top side downwards
right	How far to move the right side to the left
bottom	How far to move the bottom side upwards
left	How far to move the left side to the right

the resized `GskRoundedRect`