misc: Use the OpenURI D-Bus portal for opening URLs

This works inside of containers, and supports passing an activation token with the request, which is needed on Wayland to transfer focus to the browser.

test/testurl.c

@@ -25,29 +25,27 @@ static void tryOpenURL(const char *url)
 
 int main(int argc, char **argv)
 {
-    int i;
-    SDLTest_CommonState *state;
-
-    state = SDLTest_CommonCreateState(argv, 0);
-
-    if (!SDL_Init(SDL_INIT_VIDEO)) {
-        SDL_Log("SDL_Init failed: %s", SDL_GetError());
-        return 1;
-    }
+    const char *url = NULL;
+    SDLTest_CommonState *state = SDLTest_CommonCreateState(argv, 0);
+    bool use_gui = false;
 
     /* Parse commandline */
-    for (i = 1; i < argc;) {
+    for (int i = 1; i < argc;) {
         int consumed;
 
         consumed = SDLTest_CommonArg(state, i);
         if (consumed == 0) {
             if (argv[i][0] != '-') {
-                tryOpenURL(argv[i]);
+                url = argv[i];
+                consumed = 1;
+            } else if (SDL_strcasecmp(argv[i], "--gui") == 0) {
+                use_gui = true;
                 consumed = 1;
             }
         }
         if (consumed <= 0) {
             static const char *options[] = {
+                "[--gui]"
                 "[URL [...]]",
                 NULL,
             };
@@ -57,6 +55,38 @@ int main(int argc, char **argv)
         i += consumed;
     }
 
+    state->flags = SDL_INIT_VIDEO;
+    if (!SDLTest_CommonInit(state)) {
+        return SDL_APP_FAILURE;
+    }
+
+    if (!use_gui) {
+        tryOpenURL(url);
+    } else {
+        SDL_Event event;
+        bool quit = false;
+
+        while (!quit) {
+            while (SDL_PollEvent(&event)) {
+                if (event.type == SDL_EVENT_KEY_DOWN) {
+                    if (event.key.key == SDLK_SPACE) {
+                        tryOpenURL(url);
+                    } else if (event.key.key == SDLK_ESCAPE) {
+                        quit = true;
+                    }
+                } else if (event.type == SDL_EVENT_QUIT) {
+                    quit = true;
+                }
+            }
+
+            SDL_SetRenderDrawColor(state->renderers[0], 0, 0, 0, 255);
+            SDL_RenderClear(state->renderers[0]);
+            SDL_SetRenderDrawColor(state->renderers[0], 255, 255, 255, 255);
+            SDL_RenderDebugTextFormat(state->renderers[0], 8.f, 16.f, "Press space to open %s", url);
+            SDL_RenderPresent(state->renderers[0]);
+        }
+    }
+
     SDL_Quit();
     SDLTest_CommonDestroyState(state);
     return 0;