1 files changed, 84 insertions, 0 deletions
diff --git a/widget/Screen.h b/widget/Screen.h
new file mode 100644
index 0000000000..f3f8b4a628
--- /dev/null
+++ b/widget/Screen.h
@@ -0,0 +1,84 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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_widget_Screen_h
+#define mozilla_widget_Screen_h
+
+#include "nsIScreen.h"
+
+#include "Units.h"
+#include "mozilla/HalScreenConfiguration.h"  // For hal::ScreenOrientation
+
+namespace mozilla {
+namespace dom {
+class ScreenDetails;
+}  // namespace dom
+
+namespace widget {
+
+class Screen final : public nsIScreen {
+ public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSISCREEN
+
+  using OrientationAngle = uint16_t;
+  enum class IsPseudoDisplay : bool { No, Yes };
+
+  Screen(LayoutDeviceIntRect aRect, LayoutDeviceIntRect aAvailRect,
+         uint32_t aPixelDepth, uint32_t aColorDepth, uint32_t aRefreshRate,
+         DesktopToLayoutDeviceScale aContentsScale,
+         CSSToLayoutDeviceScale aDefaultCssScale, float aDpi, IsPseudoDisplay,
+         hal::ScreenOrientation = hal::ScreenOrientation::None,
+         OrientationAngle = 0);
+  explicit Screen(const dom::ScreenDetails& aScreenDetails);
+  Screen(const Screen& aOther);
+
+  dom::ScreenDetails ToScreenDetails() const;
+
+  OrientationAngle GetOrientationAngle() const { return mOrientationAngle; }
+  hal::ScreenOrientation GetOrientationType() const {
+    return mScreenOrientation;
+  }
+
+  /**
+   * Return default orientation type that angle is 0.
+   * This returns LandscapePrimary or PortraitPrimary.
+   */
+  hal::ScreenOrientation GetDefaultOrientationType() const;
+
+  float GetDPI() const { return mDPI; }
+
+  const LayoutDeviceIntRect& GetRect() const { return mRect; }
+  const LayoutDeviceIntRect& GetAvailRect() const { return mAvailRect; }
+  const DesktopToLayoutDeviceScale& GetContentsScaleFactor() const {
+    return mContentsScale;
+  }
+
+  enum class IncludeOSZoom : bool { No, Yes };
+  CSSToLayoutDeviceScale GetCSSToLayoutDeviceScale(IncludeOSZoom) const;
+
+ private:
+  virtual ~Screen() = default;
+
+  const LayoutDeviceIntRect mRect;
+  const LayoutDeviceIntRect mAvailRect;
+  const DesktopIntRect mRectDisplayPix;
+  const DesktopIntRect mAvailRectDisplayPix;
+  const uint32_t mPixelDepth;
+  const uint32_t mColorDepth;
+  const uint32_t mRefreshRate;
+  const DesktopToLayoutDeviceScale mContentsScale;
+  const CSSToLayoutDeviceScale mDefaultCssScale;
+  const float mDPI;
+  const hal::ScreenOrientation mScreenOrientation;
+  const OrientationAngle mOrientationAngle;
+  const bool mIsPseudoDisplay;
+};
+
+}  // namespace widget
+}  // namespace mozilla
+
+#endif