Hi, This series adds support for raw pointer events, pointer confinement and introduces pointer warp emulation to implement pointer-lock like features clients use pointer warping for.
Raw pointer events is done by adding a new valuator mask setter that takes both an absolute value and an unaccelerated value. It is similar to that of valuator_mask_set_unaccelerated() except that it takes an absolute pointer coordinate instead of a relative coordinate. Confinement is pretty straight forward; if a client tries to grab a pointer with a confineTo set to some window, this will be translated into confining the pointer using the pointer constraints protocol. Pointer warping emulation works roughly by locking the pointer whenever an X11 client tries to warp the pointer while the cursor is invisible. See the corresponding patch for further details. Note that the compositor side implementation of the pointer constraints protocol need to special case X11 clients due to various reasons. Thus, an unpatched mutter/weston will not be able to enable confinement and warp emulation to work properly. mutter/gnome-shell patches, however, are available here[0]. All of this seems to work fairly Ok on various games I have tested. I've tested SDL 2 using the X11 backend (ioquake3), GLFW using the X11 backend, OpenTTD, Half Life 1, Half Life 2, Shadow Warrior, Trine 2, Portal, and they seem to work with no obvious flaws right now. However given the nature of this approach, I expect various things needs to be tweaked to get all applications working. Also special thanks to Krzysztof Sobiecki for helping out and for testing a lot of games finding. While I realize it is pretty late in the development schedule, assuming these patches introduces too much changes for the coming release, would it be possible to land at least the ABI breaking ones (1-3?) so that it is possible to distribute a patched version that will be ABI compatible with the coming release? Jonas [0] https://github.com/jadahl/mutter/commits/wip/xwayland-pointer-warps Jonas Ådahl (11): dix: Introduce CursorWarpedTo vfunc in Screen dix: Incroduce CursorConfinedTo vfunc in Screen dix: Add valuator_mask_set_absolute_unaccelerated xwayland: Bind the relative pointer manager xwayland: Split up device class init/release into functions xwayland: Dispatch pointer motion events on wl_pointer.frame if possible xwayland: Set unaccelerated pointer motion delta if available xwayland: Put getting a xwl_window from a Window in a helper xwayland: Bind pointer constraints global xwayland: Translate a pointer grab with confineTo to pointer confinement xwayland: Add pointer warp emulator Krzysztof Sobiecki (1): xwayland: Add a new input device used for pointer warping/locking configure.ac | 4 +- dix/events.c | 8 + dix/inpututils.c | 13 + hw/xwayland/.gitignore | 4 + hw/xwayland/Makefile.am | 28 +- hw/xwayland/xwayland-cursor.c | 7 + hw/xwayland/xwayland-input.c | 674 +++++++++++++++++++++++++++++++++++++----- hw/xwayland/xwayland.c | 89 +++++- hw/xwayland/xwayland.h | 43 +++ include/input.h | 5 +- include/scrnintstr.h | 14 + 11 files changed, 815 insertions(+), 74 deletions(-) -- 2.7.4 _______________________________________________ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: https://lists.x.org/mailman/listinfo/xorg-devel
