commit 50b7f5fe78772b25d2df2d10a56604b04a5607d7
author Charlie Birks <charlie@daftgames.net> Tue Jan 29 12:14:33 2019 +0000
committer Charlie Birks <charlie@daftgames.net> Tue Jan 29 12:14:33 2019 +0000
tree ef8ef394e0d12f1bf75d782d0048aa7452199ea7
parent bf51d0cd3f29a680f1a831e146ab19840a1843bb

Emscripten: reset fullscreen_window when leaving fullscreen
If the browser left fullscreen mode by the user pressing ESC, the next
call to SDL_SetWindowFullscreen(1) will fail as it thinks the window is
already fullscreen. (#65)

src/video/emscripten/SDL_emscriptenevents.c

diff --git a/src/video/emscripten/SDL_emscriptenevents.c b/src/video/emscripten/SDL_emscriptenevents.c
index 57235a1..f01502a 100644
--- a/src/video/emscripten/SDL_emscriptenevents.c
+++ b/src/video/emscripten/SDL_emscriptenevents.c
@@ -551,6 +551,8 @@
 Emscripten_HandleFullscreenChange(int eventType, const EmscriptenFullscreenChangeEvent *fullscreenChangeEvent, void *userData)
 {
     SDL_WindowData *window_data = userData;
+    SDL_VideoDisplay *display;
+
     if(fullscreenChangeEvent->isFullscreen)
     {
         window_data->window->flags |= window_data->requested_fullscreen_mode;
@@ -563,6 +565,13 @@
     else
     {
         window_data->window->flags &= ~FULLSCREEN_MASK;
+
+        /* reset fullscreen window if the browser left fullscreen */
+        display = SDL_GetDisplayForWindow(window_data->window);
+
+        if (display->fullscreen_window == window_data->window) {
+            display->fullscreen_window = NULL;
+        }
     }
 
     return 0;