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      1 /*
      2  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
      3  * Copyright (C) 2009 Google Inc. All Rights Reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
     15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     17  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
     18  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     19  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     20  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     21  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     22  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     24  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 #ifndef ScrollbarThemeChromiumMac_h
     28 #define ScrollbarThemeChromiumMac_h
     29 
     30 #include "ScrollbarThemeComposite.h"
     31 
     32 // This file (and its associated .mm file) is a clone of ScrollbarThemeMac.h.
     33 // See the .mm file for details.
     34 
     35 namespace WebCore {
     36 
     37 class ScrollbarThemeChromiumMac : public ScrollbarThemeComposite {
     38 public:
     39     ScrollbarThemeChromiumMac();
     40     virtual ~ScrollbarThemeChromiumMac();
     41 
     42     virtual bool paint(Scrollbar*, GraphicsContext* context, const IntRect& damageRect);
     43 
     44     virtual int scrollbarThickness(ScrollbarControlSize = RegularScrollbar);
     45 
     46     virtual bool supportsControlTints() const { return true; }
     47 
     48     virtual double initialAutoscrollTimerDelay();
     49     virtual double autoscrollTimerDelay();
     50 
     51     virtual ScrollbarButtonsPlacement buttonsPlacement() const;
     52 
     53     virtual void registerScrollbar(Scrollbar*);
     54     virtual void unregisterScrollbar(Scrollbar*);
     55 
     56 protected:
     57     virtual bool hasButtons(Scrollbar*);
     58     virtual bool hasThumb(Scrollbar*);
     59 
     60     virtual IntRect backButtonRect(Scrollbar*, ScrollbarPart, bool painting = false);
     61     virtual IntRect forwardButtonRect(Scrollbar*, ScrollbarPart, bool painting = false);
     62     virtual IntRect trackRect(Scrollbar*, bool painting = false);
     63 
     64     virtual int minimumThumbLength(Scrollbar*);
     65 
     66     virtual bool shouldCenterOnThumb(Scrollbar*, const PlatformMouseEvent&);
     67 
     68 public:
     69     void preferencesChanged();
     70 };
     71 
     72 }
     73 
     74 #endif // ScrollbarThemeChromiumMac_h
     75