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1 // Copyright 2012 The Chromium Authors. All rights reserved. | 1 // Copyright 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef CCScrollbarGeometryStub_h |
| 6 #define CCScrollbarGeometryStub_h |
| 7 |
| 8 #include <public/WebScrollbarThemeGeometry.h> |
| 9 #include <wtf/OwnPtr.h> |
| 10 #include <wtf/PassOwnPtr.h> |
| 11 |
| 12 namespace cc { |
| 13 |
| 14 // This subclass wraps an existing scrollbar geometry class so that |
| 15 // another class can derive from it and override specific functions, while |
| 16 // passing through the remaining ones. |
| 17 class CCScrollbarGeometryStub : public WebKit::WebScrollbarThemeGeometry { |
| 18 public: |
| 19 virtual ~CCScrollbarGeometryStub(); |
| 20 |
| 21 // Allow derived classes to update themselves from a scrollbar. |
| 22 void update(WebKit::WebScrollbar*) { } |
| 23 |
| 24 // WebScrollbarThemeGeometry interface |
| 25 virtual WebKit::WebScrollbarThemeGeometry* clone() const OVERRIDE; |
| 26 virtual int thumbPosition(WebKit::WebScrollbar*) OVERRIDE; |
| 27 virtual int thumbLength(WebKit::WebScrollbar*) OVERRIDE; |
| 28 virtual int trackPosition(WebKit::WebScrollbar*) OVERRIDE; |
| 29 virtual int trackLength(WebKit::WebScrollbar*) OVERRIDE; |
| 30 virtual bool hasButtons(WebKit::WebScrollbar*) OVERRIDE; |
| 31 virtual bool hasThumb(WebKit::WebScrollbar*) OVERRIDE; |
| 32 virtual WebKit::WebRect trackRect(WebKit::WebScrollbar*) OVERRIDE; |
| 33 virtual WebKit::WebRect thumbRect(WebKit::WebScrollbar*) OVERRIDE; |
| 34 virtual int minimumThumbLength(WebKit::WebScrollbar*) OVERRIDE; |
| 35 virtual int scrollbarThickness(WebKit::WebScrollbar*) OVERRIDE; |
| 36 virtual WebKit::WebRect backButtonStartRect(WebKit::WebScrollbar*) OVERRIDE; |
| 37 virtual WebKit::WebRect backButtonEndRect(WebKit::WebScrollbar*) OVERRIDE; |
| 38 virtual WebKit::WebRect forwardButtonStartRect(WebKit::WebScrollbar*) OVERRI
DE; |
| 39 virtual WebKit::WebRect forwardButtonEndRect(WebKit::WebScrollbar*) OVERRIDE
; |
| 40 virtual WebKit::WebRect constrainTrackRectToTrackPieces(WebKit::WebScrollbar
*, const WebKit::WebRect&) OVERRIDE; |
| 41 virtual void splitTrack(WebKit::WebScrollbar*, const WebKit::WebRect& track,
WebKit::WebRect& startTrack, WebKit::WebRect& thumb, WebKit::WebRect& endTrack)
OVERRIDE; |
| 42 |
| 43 protected: |
| 44 explicit CCScrollbarGeometryStub(PassOwnPtr<WebKit::WebScrollbarThemeGeometr
y>); |
| 45 |
| 46 private: |
| 47 OwnPtr<WebKit::WebScrollbarThemeGeometry> m_geometry; |
| 48 }; |
| 49 |
| 50 } |
| 51 |
| 52 #endif |
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