Index: third_party/WebKit/Source/core/paint/PaintInvalidationCapableScrollableArea.h |
diff --git a/third_party/WebKit/Source/core/paint/PaintInvalidationCapableScrollableArea.h b/third_party/WebKit/Source/core/paint/PaintInvalidationCapableScrollableArea.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..1120378da9abda5c09dbe7df6eea57d0749e2609 |
--- /dev/null |
+++ b/third_party/WebKit/Source/core/paint/PaintInvalidationCapableScrollableArea.h |
@@ -0,0 +1,39 @@ |
+// Copyright 2015 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef PaintInvalidationCapableScrollableArea_h |
+#define PaintInvalidationCapableScrollableArea_h |
+ |
+#include "core/CoreExport.h" |
+#include "platform/geometry/LayoutRect.h" |
+#include "platform/scroll/ScrollableArea.h" |
+ |
+namespace blink { |
+ |
+class LayoutBox; |
+class LayoutBoxModelObject; |
+class LayoutScrollbarPart; |
+class PaintInvalidationContainer; |
+class PaintInvalidationState; |
+ |
+// Base class of FrameView and PaintLayerScrollableArea to share paint invalidation code. |
+// TODO(wangxianzhu): Combine this into PaintLayerScrollableArea when root-layer-scrolls launches. |
+class CORE_EXPORT PaintInvalidationCapableScrollableArea : public ScrollableArea { |
+public: |
+ void willRemoveScrollbar(Scrollbar*, ScrollbarOrientation) override; |
+ void invalidatePaintOfScrollControlsIfNeeded(const PaintInvalidationState&, const LayoutBoxModelObject& paintInvalidationContainer); |
+ |
+private: |
+ virtual LayoutBox& boxForScrollControlPaintInvalidation() const = 0; |
+ virtual LayoutScrollbarPart* scrollCorner() const = 0; |
+ virtual LayoutScrollbarPart* resizer() const = 0; |
+ |
+ LayoutRect m_horizontalScrollbarPreviousPaintInvalidationRect; |
+ LayoutRect m_verticalScrollbarPreviousPaintInvalidationRect; |
+ LayoutRect m_scrollCornerPreviousPaintInvalidationRect; |
+}; |
+ |
+} // namespace blink |
+ |
+#endif // PaintInvalidationCapableScrollableArea_h |