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      1 /*
      2  * Copyright (C) 2012 Google 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  *
      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 AND ITS CONTRIBUTORS "AS IS" AND ANY
     15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     16  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     17  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     18  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     19  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     20  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     21  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef ScrollbarThemeClient_h
     27 #define ScrollbarThemeClient_h
     28 
     29 #include "platform/PlatformExport.h"
     30 #include "platform/geometry/IntPoint.h"
     31 #include "platform/geometry/IntRect.h"
     32 #include "platform/geometry/IntSize.h"
     33 #include "platform/scroll/ScrollTypes.h"
     34 #include "wtf/PassOwnPtr.h"
     35 #include "wtf/Vector.h"
     36 
     37 namespace WebCore {
     38 
     39 class Widget;
     40 
     41 class PLATFORM_EXPORT ScrollbarThemeClient {
     42 public:
     43     virtual int x() const = 0;
     44     virtual int y() const = 0;
     45     virtual int width() const = 0;
     46     virtual int height() const = 0;
     47     virtual IntSize size() const = 0;
     48     virtual IntPoint location() const = 0;
     49 
     50     virtual Widget* parent() const = 0;
     51     virtual Widget* root() const = 0;
     52 
     53     virtual void setFrameRect(const IntRect&) = 0;
     54     virtual IntRect frameRect() const = 0;
     55 
     56     virtual void invalidate() = 0;
     57     virtual void invalidateRect(const IntRect&) = 0;
     58 
     59     virtual ScrollbarOverlayStyle scrollbarOverlayStyle() const = 0;
     60     virtual void getTickmarks(Vector<IntRect>&) const = 0;
     61     virtual bool isScrollableAreaActive() const = 0;
     62     virtual bool isScrollViewScrollbar() const = 0;
     63 
     64     virtual IntPoint convertFromContainingWindow(const IntPoint& windowPoint) = 0;
     65 
     66     virtual bool isCustomScrollbar() const = 0;
     67     virtual ScrollbarOrientation orientation() const = 0;
     68     virtual bool isLeftSideVerticalScrollbar() const = 0;
     69 
     70     virtual int value() const = 0;
     71     virtual float currentPos() const = 0;
     72     virtual int visibleSize() const = 0;
     73     virtual int totalSize() const = 0;
     74     virtual int maximum() const = 0;
     75     virtual ScrollbarControlSize controlSize() const = 0;
     76 
     77     virtual ScrollbarPart pressedPart() const = 0;
     78     virtual ScrollbarPart hoveredPart() const = 0;
     79 
     80     virtual void styleChanged() = 0;
     81 
     82     virtual bool enabled() const = 0;
     83     virtual void setEnabled(bool) = 0;
     84 
     85     virtual bool isOverlayScrollbar() const = 0;
     86 
     87     virtual bool isAlphaLocked() const = 0;
     88     virtual void setIsAlphaLocked(bool) = 0;
     89 
     90 protected:
     91     virtual ~ScrollbarThemeClient() { }
     92 };
     93 
     94 } // namespace WebCore
     95 
     96 #endif // ScollbarThemeClient_h
     97