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use css size for touch normalisation

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This commit is contained in:
Charlie Birks 2016-09-12 23:58:08 -07:00
parent 1096f32309
commit be08cc61f9
1 changed files with 5 additions and 2 deletions
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7
src/video/emscripten/SDL_emscriptenevents.c
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@ -374,12 +374,15 @@ Emscripten_HandleTouch(int eventType, const EmscriptenTouchEvent *touchEvent, vo
{
SDL_WindowData *window_data = userData;
int i;
double client_w, client_h;
SDL_TouchID deviceId = 1;
if (SDL_AddTouch(deviceId, "") < 0) {
return 0;
}
emscripten_get_element_css_size(NULL, &client_w, &client_h);
for (i = 0; i < touchEvent->numTouches; i++) {
SDL_FingerID id;
float x, y;
@ -388,8 +391,8 @@ Emscripten_HandleTouch(int eventType, const EmscriptenTouchEvent *touchEvent, vo
continue;
id = touchEvent->touches[i].identifier;
x = touchEvent->touches[i].canvasX / (float)window_data->windowed_width;
y = touchEvent->touches[i].canvasY / (float)window_data->windowed_height;
x = touchEvent->touches[i].canvasX / client_w;
y = touchEvent->touches[i].canvasY / client_h;
if (eventType == EMSCRIPTEN_EVENT_TOUCHSTART) {
if (!window_data->finger_touching) {