1 files changed, 43 insertions, 0 deletions
diff --git a/hal/fallback/FallbackScreenConfiguration.h b/hal/fallback/FallbackScreenConfiguration.h
new file mode 100644
index 0000000000..cde9c5c6b4
--- /dev/null
+++ b/hal/fallback/FallbackScreenConfiguration.h
@@ -0,0 +1,43 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_fallback_FallbackScreenConfiguration_h
+#define mozilla_fallback_FallbackScreenConfiguration_h
+
+#include "Hal.h"
+#include "nsIScreenManager.h"
+#include "nsServiceManagerUtils.h"
+
+namespace mozilla {
+namespace fallback {
+
+inline void GetCurrentScreenConfiguration(
+    hal::ScreenConfiguration* aScreenConfiguration) {
+  nsresult rv;
+  nsCOMPtr<nsIScreenManager> screenMgr =
+      do_GetService("@mozilla.org/gfx/screenmanager;1", &rv);
+  if (NS_FAILED(rv)) {
+    NS_ERROR("Can't find nsIScreenManager!");
+    return;
+  }
+
+  int32_t colorDepth, pixelDepth, x, y, w, h;
+  hal::ScreenOrientation orientation;
+  nsCOMPtr<nsIScreen> screen;
+
+  screenMgr->GetPrimaryScreen(getter_AddRefs(screen));
+  screen->GetRect(&x, &y, &w, &h);
+  screen->GetColorDepth(&colorDepth);
+  screen->GetPixelDepth(&pixelDepth);
+  orientation = w >= h ? hal::eScreenOrientation_LandscapePrimary
+                       : hal::eScreenOrientation_PortraitPrimary;
+
+  *aScreenConfiguration = hal::ScreenConfiguration(
+      nsIntRect(x, y, w, h), orientation, 0, colorDepth, pixelDepth);
+}
+
+}  // namespace fallback
+}  // namespace mozilla
+
+#endif  // mozilla_fallback_FallbackScreenConfiguration_h