There is a quirk with XInput2 mouse capture that causes a leave event to be sent if the pointer moves out->in->out, which breaks mouse tracking outside the window. If the mouse leaves the window with buttons pressed, continue tracking it until the buttons are released.
(cherry picked from commit 8c733d1f7b)
According to the documentation and testing the `emscripten_webgl_create_context` function returns `0` on error as oppposed to a negative number. This was causing the error message to be empty when the later `emscripten_webgl_make_context_current` call fails given the invalid context.
See https://emscripten.org/docs/api_reference/html5.h.html#c.emscripten_webgl_create_context
(cherry picked from commit 7e1d4f843c)
Xfce, unlike every other window manager in existence, sends ConfigureNotify events before PropertyNotify events when toggling the fullscreen and maximized window state. Check the window state when handling ConfigureNotify events, and defer emitting SDL size/position events until the corresponding PropertyNotify event arrives, since SDL and clients expect to get the window state before the new size and position.
(cherry picked from commit 11a3296a42)
Under certain circumstances, processing events may try to position a child before it is fully initialized. Check the internal data before proceeding.
(cherry picked from commit 9da46bc37f)
The window may be initially maximized or made fullscreen by the window manager for various reasons, such as automatically declaring a window that precisely fills the usable desktop space as maximized, or a "kiosk-mode" automatically making the window fullscreen.
Don't redundantly make restored or unset fullscreen calls when initially showing a window, or the expected state can be unset.
(cherry picked from commit adad7dcae0)
It doesn't work well with Vulkan, and Vulkan windows may not have the Vulkan flag set in all circumstances, so only enable it if we explicitly know that OpenGL is being requested instead.
(cherry picked from commit 646f1f243f)
On non-compositing window managers, XIconifyWindow can trigger map/unmap events, which would toggle the window hidden/shown state. This should not be done, as a hidden window in SDL is equivalent to a withdrawn window in X, and SDL will try to set/reset state when it is shown again.
Unless the window is explicitly being withdrawn via X11_HideWindow(), set unmapped windows to the minimized/occluded state, and send a restored event when mapped again.
(cherry picked from commit 667b706a93)
External windows often handle their own events, and SDL implicitly processing events during synchronization can be unexpected and cause issues. For requests that don't change the window state beyond size or position, use the legacy synchronization method that synthesizes events from the window attributes without processing events.
(cherry picked from commit 6e2d3c9b5d)
For some reason this locks up the Windows compositor when called by Steam. I'm disabling it for now until we understand why and whether this can cause issues for other applications as well.
(cherry picked from commit a23f97483f)
The window failing to enter/exit fullscreen notifications don't necessarily imply anything about the actual state of the window. On failure, dump pending events, and don't presume anything about the current window state, as it will be handled by subsequent enter/leave notifications.
(cherry picked from commit 09fff161e9)
GNOME requires this to allow keyboard grabs on XWayland. Otherwise, XGrabKeyboard will still report success, but shortcuts won't be inhibited.
See 5f132f3975
(cherry picked from commit 716e33f106)
The accelerated relative coordinates are always relative to the desktop resolution, and need to be scaled with emulated fullscreen resolutions for mouse movement to remain stable. Otherwise, pointer speeds will be too fast on emulated resolutions below the desktop resolution, and too slow on those above.
(cherry picked from commit 027df89ed3)
We can't use keyboard input as a signal about whether a keyboard is attached. There might be keyboard input from any number of generated inputs or non-keyboard devices.
(cherry picked from commit 8caeaaacdd)
