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https://github.com/Relintai/sdl2_frt.git
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use css size for touch normalisation
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1096f32309
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@ -374,12 +374,15 @@ Emscripten_HandleTouch(int eventType, const EmscriptenTouchEvent *touchEvent, vo
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{
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SDL_WindowData *window_data = userData;
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int i;
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double client_w, client_h;
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SDL_TouchID deviceId = 1;
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if (SDL_AddTouch(deviceId, "") < 0) {
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return 0;
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}
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emscripten_get_element_css_size(NULL, &client_w, &client_h);
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for (i = 0; i < touchEvent->numTouches; i++) {
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SDL_FingerID id;
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float x, y;
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@ -388,8 +391,8 @@ Emscripten_HandleTouch(int eventType, const EmscriptenTouchEvent *touchEvent, vo
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continue;
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id = touchEvent->touches[i].identifier;
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x = touchEvent->touches[i].canvasX / (float)window_data->windowed_width;
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y = touchEvent->touches[i].canvasY / (float)window_data->windowed_height;
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x = touchEvent->touches[i].canvasX / client_w;
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y = touchEvent->touches[i].canvasY / client_h;
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if (eventType == EMSCRIPTEN_EVENT_TOUCHSTART) {
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if (!window_data->finger_touching) {
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