1 files changed, 53 insertions, 0 deletions
diff --git a/widget/ScrollbarDrawingMac.h b/widget/ScrollbarDrawingMac.h
new file mode 100644
index 0000000000..ef135337e7
--- /dev/null
+++ b/widget/ScrollbarDrawingMac.h
@@ -0,0 +1,53 @@
+/* -*- 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_ScrollbarDrawing_h
+#define mozilla_widget_ScrollbarDrawing_h
+
+#include "nsColor.h"
+#include "nsITheme.h"
+#include "Units.h"
+
+namespace mozilla {
+namespace gfx {
+class DrawTarget;
+}
+
+namespace widget {
+
+struct ScrollbarParams {
+  bool overlay = false;
+  bool rolledOver = false;
+  bool small = false;
+  bool horizontal = false;
+  bool rtl = false;
+  bool onDarkBackground = false;
+  bool custom = false;
+  // Two colors only used when custom is true.
+  nscolor trackColor = NS_RGBA(0, 0, 0, 0);
+  nscolor faceColor = NS_RGBA(0, 0, 0, 0);
+};
+
+class ScrollbarDrawingMac final {
+ public:
+  static LayoutDeviceIntSize GetMinimumWidgetSize(StyleAppearance aAppearance,
+                                                  nsIFrame* aFrame,
+                                                  float aDpiRatio);
+  static ScrollbarParams ComputeScrollbarParams(nsIFrame* aFrame,
+                                                const ComputedStyle& aStyle,
+                                                bool aIsHorizontal);
+  static void DrawScrollbarThumb(gfx::DrawTarget& aDT, const gfx::Rect& aRect,
+                                 const ScrollbarParams& aParams);
+  static void DrawScrollbarTrack(gfx::DrawTarget& aDT, const gfx::Rect& aRect,
+                                 const ScrollbarParams& aParams);
+  static void DrawScrollCorner(gfx::DrawTarget& aDT, const gfx::Rect& aRect,
+                               const ScrollbarParams& aParams);
+};
+
+}  // namespace widget
+}  // namespace mozilla
+
+#endif