Without this fix, a regular custom NSBox such as a simple box with a 1px border would become several pixels smaller in Cappuccino.
This fix makes sure we only try to adjust the size for primary and secondary type NSBoxes.
Without this fix, setting a corner radius of 0 on a CPBoxCustom resulted in there being a corner radius anyhow.
This fix makes sure to preserve the corner radius, border width and margins for non-primary style boxes.
- The default box background color is now clear, that is what Cocoa does.
- Bezel drawing uses CPDrawTiledRects, obeys border width.
- CPDrawTiledRects/CPDrawColorTiledRects explicitly sets the line width and saves/restores the graphics state.
- Whitespace cleanup in CPBox.