1 /* 2 * Copyright (C) 2008 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 RenderScrollbarTheme_h 27 #define RenderScrollbarTheme_h 28 29 #include "ScrollbarThemeComposite.h" 30 31 namespace WebCore { 32 33 class PlatformMouseEvent; 34 class Scrollbar; 35 class ScrollView; 36 37 class RenderScrollbarTheme : public ScrollbarThemeComposite { 38 public: 39 virtual ~RenderScrollbarTheme() {}; 40 41 virtual int scrollbarThickness(ScrollbarControlSize controlSize) { return ScrollbarTheme::nativeTheme()->scrollbarThickness(controlSize); } 42 43 virtual ScrollbarButtonsPlacement buttonsPlacement() const { return ScrollbarTheme::nativeTheme()->buttonsPlacement(); } 44 45 virtual bool supportsControlTints() const { return true; } 46 47 virtual void paintScrollCorner(ScrollView*, GraphicsContext* context, const IntRect& cornerRect); 48 49 virtual bool shouldCenterOnThumb(Scrollbar* scrollbar, const PlatformMouseEvent& event) { return ScrollbarTheme::nativeTheme()->shouldCenterOnThumb(scrollbar, event); } 50 51 virtual double initialAutoscrollTimerDelay() { return ScrollbarTheme::nativeTheme()->initialAutoscrollTimerDelay(); } 52 virtual double autoscrollTimerDelay() { return ScrollbarTheme::nativeTheme()->autoscrollTimerDelay(); } 53 54 virtual void registerScrollbar(Scrollbar* scrollbar) { return ScrollbarTheme::nativeTheme()->registerScrollbar(scrollbar); } 55 virtual void unregisterScrollbar(Scrollbar* scrollbar) { return ScrollbarTheme::nativeTheme()->unregisterScrollbar(scrollbar); } 56 57 virtual int minimumThumbLength(Scrollbar*); 58 59 void buttonSizesAlongTrackAxis(Scrollbar* scrollbar, int& beforeSize, int& afterSize); 60 61 static RenderScrollbarTheme* renderScrollbarTheme(); 62 63 protected: 64 virtual bool hasButtons(Scrollbar*); 65 virtual bool hasThumb(Scrollbar*); 66 67 virtual IntRect backButtonRect(Scrollbar*, ScrollbarPart, bool painting = false); 68 virtual IntRect forwardButtonRect(Scrollbar*, ScrollbarPart, bool painting = false); 69 virtual IntRect trackRect(Scrollbar*, bool painting = false); 70 71 virtual void paintScrollbarBackground(GraphicsContext*, Scrollbar*); 72 virtual void paintTrackBackground(GraphicsContext*, Scrollbar*, const IntRect&); 73 virtual void paintTrackPiece(GraphicsContext*, Scrollbar*, const IntRect&, ScrollbarPart); 74 virtual void paintButton(GraphicsContext*, Scrollbar*, const IntRect&, ScrollbarPart); 75 virtual void paintThumb(GraphicsContext*, Scrollbar*, const IntRect&); 76 77 virtual IntRect constrainTrackRectToTrackPieces(Scrollbar*, const IntRect&); 78 }; 79 80 } // namespace WebCore 81 82 #endif // RenderScrollbarTheme_h 83
