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Fixed bug 4581 - generate synthetic mouse events at window boundaries

when real touch events are actually outside the window.
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1bsyl committed Apr 10, 2019
1 parent cfefe54 commit aae49015daf1e9cd389d8ed3ec0cba2bd4273104
Showing with 12 additions and 12 deletions.
  1. +12 −12 src/events/SDL_touch.c
@@ -257,18 +257,16 @@ SDL_SendTouch(SDL_TouchID id, SDL_FingerID fingerid,
if (finger_touching == SDL_FALSE) {
int pos_x = (int)(x * (float)window->w);
int pos_y = (int)(y * (float)window->h);
if (pos_x >= 0 && pos_y >= 0 && pos_x < window->w && pos_y < window->h) {
SDL_SendMouseMotion(window, SDL_TOUCH_MOUSEID, 0, pos_x, pos_y);
SDL_SendMouseButton(window, SDL_TOUCH_MOUSEID, SDL_PRESSED, SDL_BUTTON_LEFT);
}
if (pos_x < 0) pos_x = 0;
if (pos_x > window->w - 1) pos_x = window->w - 1;
if (pos_y < 0) pos_y = 0;
if (pos_y > window->h - 1) pos_y = window->h - 1;
SDL_SendMouseMotion(window, SDL_TOUCH_MOUSEID, 0, pos_x, pos_y);
SDL_SendMouseButton(window, SDL_TOUCH_MOUSEID, SDL_PRESSED, SDL_BUTTON_LEFT);
}
} else {
if (finger_touching == SDL_TRUE && track_touchid == id && track_fingerid == fingerid) {
int pos_x = (int)(x * (float)window->w);
int pos_y = (int)(y * (float)window->h);
if (pos_x >= 0 && pos_y >= 0 && pos_x < window->w && pos_y < window->h) {
SDL_SendMouseButton(window, SDL_TOUCH_MOUSEID, SDL_RELEASED, SDL_BUTTON_LEFT);
}
SDL_SendMouseButton(window, SDL_TOUCH_MOUSEID, SDL_RELEASED, SDL_BUTTON_LEFT);
}
}
}
@@ -361,9 +359,11 @@ SDL_SendTouchMotion(SDL_TouchID id, SDL_FingerID fingerid,
if (finger_touching == SDL_TRUE && track_touchid == id && track_fingerid == fingerid) {
int pos_x = (int)(x * (float)window->w);
int pos_y = (int)(y * (float)window->h);
if (pos_x >= 0 && pos_y >= 0 && pos_x < window->w && pos_y < window->h) {
SDL_SendMouseMotion(window, SDL_TOUCH_MOUSEID, 0, pos_x, pos_y);
}
if (pos_x < 0) pos_x = 0;
if (pos_x > window->w - 1) pos_x = window->w - 1;
if (pos_y < 0) pos_y = 0;
if (pos_y > window->h - 1) pos_y = window->h - 1;
SDL_SendMouseMotion(window, SDL_TOUCH_MOUSEID, 0, pos_x, pos_y);
}
}
}

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