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Handle wayland touch cancel message #10950

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Sep 26, 2024
Merged

Handle wayland touch cancel message #10950

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22 changes: 22 additions & 0 deletions src/video/wayland/SDL_waylandevents.c
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Original file line number Diff line number Diff line change
Expand Up @@ -932,6 +932,28 @@ static void touch_handler_frame(void *data, struct wl_touch *touch)

static void touch_handler_cancel(void *data, struct wl_touch *touch)
{
struct SDL_WaylandTouchPoint *tp;
while ((tp = touch_points.head)) {
wl_fixed_t fx = 0, fy = 0;
struct wl_surface *surface = NULL;
int id = tp->id;

touch_del(id, &fx, &fy, &surface);

if (surface) {
SDL_WindowData *window_data = (SDL_WindowData *)wl_surface_get_user_data(surface);

if (window_data) {
const double dblx = wl_fixed_to_double(fx) * window_data->pointer_scale_x;
const double dbly = wl_fixed_to_double(fy) * window_data->pointer_scale_y;
const float x = dblx / window_data->sdlwindow->w;
const float y = dbly / window_data->sdlwindow->h;

SDL_SendTouch((SDL_TouchID)(intptr_t)touch, (SDL_FingerID)id,
window_data->sdlwindow, SDL_FALSE, x, y, 1.0f);
}
}
}
}

static const struct wl_touch_listener touch_listener = {
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