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Fix synthetically generated mouse events getting lost forever after the device orientation changes (or the window is otherwise resized) while a finger is touching the screen.

This commit is contained in:
Alex Szpakowski 2019-06-16 14:10:30 -03:00
parent f4625f52f2
commit 9306ef9b10
1 changed files with 9 additions and 0 deletions
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9
src/events/SDL_touch.c
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@ -262,6 +262,15 @@ SDL_SendTouch(SDL_TouchID id, SDL_FingerID fingerid,
/* FIXME: maybe we should only restrict to a few SDL_TouchDeviceType */ /* FIXME: maybe we should only restrict to a few SDL_TouchDeviceType */
if (id != SDL_MOUSE_TOUCHID) { if (id != SDL_MOUSE_TOUCHID) {
SDL_Window *window = SDL_GetMouseFocus(); SDL_Window *window = SDL_GetMouseFocus();
if (window == NULL) {
/* Mouse focus may have been lost by e.g. the window resizing
* due to device orientation change while the mouse state is
* pressed (because its position is now out of the window).
* SendMouse* will update mouse focus again after that, but
* if those are never called then SDL might think the
* 'mouse' has no focus at all. */
window = SDL_GetKeyboardFocus();
}
if (window) { if (window) {
if (down) { if (down) {
if (finger_touching == SDL_FALSE) { if (finger_touching == SDL_FALSE) {