1 files changed, 52 insertions, 0 deletions
diff --git a/widget/ScrollbarDrawingGTK.h b/widget/ScrollbarDrawingGTK.h
new file mode 100644
index 0000000000..162997e127
--- /dev/null
+++ b/widget/ScrollbarDrawingGTK.h
@@ -0,0 +1,52 @@
+/* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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_ScrollbarDrawingGTK_h
+#define mozilla_widget_ScrollbarDrawingGTK_h
+
+#include "nsITheme.h"
+#include "nsNativeTheme.h"
+#include "ScrollbarDrawing.h"
+
+namespace mozilla::widget {
+
+class ScrollbarDrawingGTK final : public ScrollbarDrawing {
+ public:
+  ScrollbarDrawingGTK() : ScrollbarDrawing(Kind::Gtk) {}
+  virtual ~ScrollbarDrawingGTK() = default;
+
+  LayoutDeviceIntSize GetMinimumWidgetSize(nsPresContext*,
+                                           StyleAppearance aAppearance,
+                                           nsIFrame* aFrame) override;
+
+  Maybe<nsITheme::Transparency> GetScrollbarPartTransparency(
+      nsIFrame* aFrame, StyleAppearance aAppearance) override;
+
+  template <typename PaintBackendData>
+  bool DoPaintScrollbarThumb(PaintBackendData&, const LayoutDeviceRect&,
+                             ScrollbarKind, nsIFrame*, const ComputedStyle&,
+                             const ElementState& aElementState,
+                             const DocumentState& aDocumentState, const Colors&,
+                             const DPIRatio&);
+  bool PaintScrollbarThumb(DrawTarget&, const LayoutDeviceRect&, ScrollbarKind,
+                           nsIFrame*, const ComputedStyle& aStyle,
+                           const ElementState& aElementState,
+                           const DocumentState& aDocumentState, const Colors&,
+                           const DPIRatio&) override;
+  bool PaintScrollbarThumb(WebRenderBackendData&, const LayoutDeviceRect&,
+                           ScrollbarKind, nsIFrame*,
+                           const ComputedStyle& aStyle,
+                           const ElementState& aElementState,
+                           const DocumentState& aDocumentState, const Colors&,
+                           const DPIRatio&) override;
+
+  void RecomputeScrollbarParams() override;
+
+  bool ShouldDrawScrollbarButtons() override;
+};
+
+}  // namespace mozilla::widget
+
+#endif