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21ea7ebb6a
The peculiar way we handle coordinates results in relative coordinates on absolute devices being added to the last value, then that value is mapped to the screen (taking the device dimensions into account). From that mapped value we get the final coordinates, both screen and device coordinates. To avoid uneven scaling on relative coordinates, they are pre-scaled by screen ratio:resolution:device ratio factor before being mapped. This ensures that a circle drawn on the device is a circle on the screen. Previously, we used the ratio to scale x up. Synaptics already does its own scaling based on the resolution and that is done by scaling y down by the ratio. So we can remove the code from the driver and get approximately the same behaviour here. Minor ABI bump, so we can remove this from synaptics. Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> Tested-by: Emmanuel Benisty <benisty.e@gmail.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