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61a92a78cd
The interface to RegionInit():
RegionInit (RegionPtr pReg, BoxPtr rect, int size);
is very confusing because it doesn't take a list of boxes, it takes
*one* box, but if that box is NULL, it initializes an empty region
with 'size' rectangles preallocated.
Most callers of this function were correctly passing either NULL or
just one box, but there were three confused cases, where the code
seems to expect a region to be created from a list of boxes.
This patch adds a new function RegionInitBoxes() and fixes those
instances to call that instead.
And yes, the pixman function to initialize a region from a list of
boxes is called init_rects() because pixman is also awesome.
V2: Make RegionInitBoxes() return a Bool indicating whether the call
succeeded, and fix the callers to check this return value.
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Søren Sandmann <ssp@redhat.com>
X Server
The X server accepts requests from client applications to create windows,
which are (normally rectangular) "virtual screens" that the client program
can draw into.
Windows are then composed on the actual screen by the X server
(or by a separate composite manager) as directed by the window manager,
which usually communicates with the user via graphical controls such as buttons
and draggable titlebars and borders.
For a comprehensive overview of X Server and X Window System, consult the
following article:
http://en.wikipedia.org/wiki/X_server
All questions regarding this software should be directed at the
Xorg mailing list:
http://lists.freedesktop.org/mailman/listinfo/xorg
Please submit bug reports to the Xorg bugzilla:
https://bugs.freedesktop.org/enter_bug.cgi?product=xorg
The master development code repository can be found at:
git://anongit.freedesktop.org/git/xorg/xserver
http://cgit.freedesktop.org/xorg/xserver
For patch submission instructions, see:
http://www.x.org/wiki/Development/Documentation/SubmittingPatches
For more information on the git code manager, see:
http://wiki.x.org/wiki/GitPage