Part 10 of cc/ directory shuffles: layers

cc/scrollbar_geometry_fixed_thumb.h

-// 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 CC_SCROLLBAR_GEOMETRY_FIXED_THUMB_H_
-#define CC_SCROLLBAR_GEOMETRY_FIXED_THUMB_H_
-
-#include "cc/base/cc_export.h"
-#include "cc/scrollbar_geometry_stub.h"
-#include "ui/gfx/size.h"
-
-namespace cc {
-
-// This scrollbar geometry class behaves exactly like a normal geometry except
-// it always returns a fixed thumb length. This allows a page to zoom (changing
-// the total size of the scrollable area, changing the thumb length) while not
-// requiring the thumb resource to be repainted.
-class CC_EXPORT ScrollbarGeometryFixedThumb : public ScrollbarGeometryStub {
-public:
-    static scoped_ptr<ScrollbarGeometryFixedThumb> create(scoped_ptr<WebKit::WebScrollbarThemeGeometry>);
-    virtual ~ScrollbarGeometryFixedThumb();
-
-    void setThumbSize(gfx::Size size) { m_thumbSize = size; }
-
-    // WebScrollbarThemeGeometry interface
-    virtual WebKit::WebScrollbarThemeGeometry* clone() const OVERRIDE;
-    virtual int thumbLength(WebKit::WebScrollbar*) OVERRIDE;
-    virtual int thumbPosition(WebKit::WebScrollbar*) OVERRIDE;
-    virtual void splitTrack(WebKit::WebScrollbar*, const WebKit::WebRect& track, WebKit::WebRect& startTrack, WebKit::WebRect& thumb, WebKit::WebRect& endTrack) OVERRIDE;
-
-private:
-    explicit ScrollbarGeometryFixedThumb(scoped_ptr<WebKit::WebScrollbarThemeGeometry>);
-
-    gfx::Size m_thumbSize;
-};
-
-}
-
-#endif  // CC_SCROLLBAR_GEOMETRY_FIXED_THUMB_H_