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a6e85e6330
Emulate pointer warps by locking the pointer and sending relative motion events instead of absolute. X will keep track of the "fake" pointer cursor position given the relative motion events, and the client warping the cursor will warp the faked cursor position. Various requirements need to be met for the pointer warp emulator to enable: The cursor must be invisible: since it would not be acceptable that a fake cursor position would be different from the visual representation of the cursor, emulation can only be done when there is no visual representation done by the Wayland compositor. Thus, for the emulator to enable, the cursor must be hidden, and would the cursor be displayed while the emulator is active, the emulator would be destroyed. The window that is warped within must be likely to have pointer focus. For example, warping outside of the window region will be ignored. The pointer warp emulator will disable itself once the fake cursor position leaves the window region, or the cursor is made visible. This makes various games depending on pointer warping (such as 3D first-person shooters and stategy games using click-to-drag-map like things) work. Signed-off-by: Jonas Ådahl <jadahl@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
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git://anongit.freedesktop.org/git/xorg/xserver
http://cgit.freedesktop.org/xorg/xserver
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http://www.x.org/wiki/Development/Documentation/SubmittingPatches
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