ClipToPicture and ClipToInversePicture not implemented

[jackburton]

ClipToPicture and ClipToInversePicture aren't implemented. BView sends already the necessary data to app_server, but app_server currently just ignores the commands.

Some documentation about ClipToPicture can be found here: ​http://www.beunited.org/bebook/The%20Interface%20Kit/ViewGraphicsState.html

I also have some old proof-of-concept code laying around which implements ClipToPicture client side (attached).

[jackburton]

ClipToPicture proof of concept

[jackburton]

By the way: I tested this code (with BRegion::Include() instead of BRegion::_AddRect()) on haiku and it doesn't produce the correct result, while it works correctly on beos.

[jackburton]

Found the problem: looks like drawing to a B_GRAY8 bitmap doesn't work. Using a B_RGBA32 bitmap works correctly.

[jackburton]

I added the client side implementation in hrev27321. A slow implementation is better than nothing.

[jackburton]

Let's close this.