Index: cc/CCScrollbarGeometryStub.h |
diff --git a/cc/CCScrollbarGeometryStub.h b/cc/CCScrollbarGeometryStub.h |
new file mode 100644 |
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+++ b/cc/CCScrollbarGeometryStub.h |
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+// Copyright 2012 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 CCScrollbarGeometryStub_h |
+#define CCScrollbarGeometryStub_h |
+ |
+#include <public/WebScrollbarThemeGeometry.h> |
+#include <wtf/PassOwnPtr.h> |
+#include <wtf/OwnPtr.h> |
+ |
+namespace WebCore { |
+ |
+// This subclass wraps an existing scrollbar geometry class so that |
+// another class can derive from it and override specific functions, while |
+// passing through the remaining ones. |
+class CCScrollbarGeometryStub : public WebKit::WebScrollbarThemeGeometry { |
+public: |
+ virtual ~CCScrollbarGeometryStub(); |
+ |
+ // Allow derived classes to update themselves from a scrollbar. |
+ void update(WebKit::WebScrollbar*) { } |
+ |
+ // WebScrollbarThemeGeometry interface |
+ virtual WebKit::WebScrollbarThemeGeometry* clone() const OVERRIDE; |
+ virtual int thumbPosition(WebKit::WebScrollbar*) OVERRIDE; |
+ virtual int thumbLength(WebKit::WebScrollbar*) OVERRIDE; |
+ virtual int trackPosition(WebKit::WebScrollbar*) OVERRIDE; |
+ virtual int trackLength(WebKit::WebScrollbar*) OVERRIDE; |
+ virtual bool hasButtons(WebKit::WebScrollbar*) OVERRIDE; |
+ virtual bool hasThumb(WebKit::WebScrollbar*) OVERRIDE; |
+ virtual WebKit::WebRect trackRect(WebKit::WebScrollbar*) OVERRIDE; |
+ virtual WebKit::WebRect thumbRect(WebKit::WebScrollbar*) OVERRIDE; |
+ virtual int minimumThumbLength(WebKit::WebScrollbar*) OVERRIDE; |
+ virtual int scrollbarThickness(WebKit::WebScrollbar*) OVERRIDE; |
+ virtual WebKit::WebRect backButtonStartRect(WebKit::WebScrollbar*) OVERRIDE; |
+ virtual WebKit::WebRect backButtonEndRect(WebKit::WebScrollbar*) OVERRIDE; |
+ virtual WebKit::WebRect forwardButtonStartRect(WebKit::WebScrollbar*) OVERRIDE; |
+ virtual WebKit::WebRect forwardButtonEndRect(WebKit::WebScrollbar*) OVERRIDE; |
+ virtual WebKit::WebRect constrainTrackRectToTrackPieces(WebKit::WebScrollbar*, const WebKit::WebRect&) OVERRIDE; |
+ virtual void splitTrack(WebKit::WebScrollbar*, const WebKit::WebRect& track, WebKit::WebRect& startTrack, WebKit::WebRect& thumb, WebKit::WebRect& endTrack) OVERRIDE; |
+ |
+protected: |
+ explicit CCScrollbarGeometryStub(PassOwnPtr<WebKit::WebScrollbarThemeGeometry>); |
+ |
+private: |
+ OwnPtr<WebKit::WebScrollbarThemeGeometry> m_geometry; |
+}; |
+ |
+} |
+ |
+#endif |