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      1 /*
      2  * Copyright (C) 2011 Apple Inc. All Rights Reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef ScrollbarThemeMock_h
     27 #define ScrollbarThemeMock_h
     28 
     29 #include "platform/scroll/ScrollbarTheme.h"
     30 
     31 namespace WebCore {
     32 
     33 // Scrollbar theme used in image snapshots, to eliminate appearance differences between platforms.
     34 class PLATFORM_EXPORT ScrollbarThemeMock : public ScrollbarTheme {
     35 public:
     36     virtual int scrollbarThickness(ScrollbarControlSize = RegularScrollbar) OVERRIDE;
     37     virtual bool usesOverlayScrollbars() const OVERRIDE;
     38 
     39 protected:
     40     virtual bool hasButtons(ScrollbarThemeClient*) OVERRIDE { return false; }
     41     virtual bool hasThumb(ScrollbarThemeClient*) OVERRIDE { return true; }
     42 
     43     virtual IntRect backButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool /*painting*/ = false) OVERRIDE { return IntRect(); }
     44     virtual IntRect forwardButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool /*painting*/ = false) OVERRIDE { return IntRect(); }
     45     virtual IntRect trackRect(ScrollbarThemeClient*, bool painting = false) OVERRIDE;
     46 
     47     virtual void paintTrackBackground(GraphicsContext*, ScrollbarThemeClient*, const IntRect&) OVERRIDE;
     48     virtual void paintThumb(GraphicsContext*, ScrollbarThemeClient*, const IntRect&) OVERRIDE;
     49 
     50 private:
     51     virtual bool isMockTheme() const OVERRIDE FINAL { return true; }
     52 };
     53 
     54 }
     55 #endif // ScrollbarThemeMock_h
     56