EdgeSizesTopBottom
Vec2 = [10, 10] Height of the top and of the bottom cap. In the image it is a distance in texels from the top and from the bottom edge to the cut. On screen it is the height of the cap in pixels of the icon's layout.
A vertical three-slice packed image provider: the whole image is cut into a top cap, a middle and a bottom cap. The caps keep their height and the middle stretches. All three pieces stretch to the icon's full width.
Slicing and the scaling of the edge sizes are described on IUiTextureDataProvider.
Vec2 = [10, 10] Height of the top and of the bottom cap. In the image it is a distance in texels from the top and from the bottom edge to the cut. On screen it is the height of the cap in pixels of the icon's layout.