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Add SDL_TouchDeviceType enum and SDL_GetTouchDeviceType(SDL_TouchID id).

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Touch device types include SDL_TOUCH_DEVICE_DIRECT (a touch screen with window-relative coordinates for touches), SDL_TOUCH_DEVICE_INDIRECT_ABSOLUTE (a trackpad-style device with absolute device coordinates), and SDL_TOUCH_DEVICE_INDIRECT_RELATIVE (a trackpad-style device with screen cursor-relative coordinates).

Phone screens are an example of a direct device type. Mac trackpads are the indirect-absolute touch device type. The Apple TV remote is an indirect-relative touch device type.
This commit is contained in:
Alex Szpakowski
2018-11-10 16:15:48 -04:00
parent 2196e5765c
commit 5029d50ea8
15 changed files with 109 additions and 15 deletions
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2
src/video/emscripten/SDL_emscriptenevents.c
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@@ -428,7 +428,7 @@ Emscripten_HandleTouch(int eventType, const EmscriptenTouchEvent *touchEvent, vo
int preventDefault = 0;
SDL_TouchID deviceId = 1;
if (SDL_AddTouch(deviceId, "") < 0) {
if (SDL_AddTouch(deviceId, SDL_TOUCH_DEVICE_DIRECT, "") < 0) {
return 0;
}