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 ScrollbarThemeComposite_h 27#define ScrollbarThemeComposite_h 28 29#include "ScrollbarTheme.h" 30 31#if PLATFORM(COCOA) 32typedef id ScrollbarPainter; 33#else 34typedef void* ScrollbarPainter; 35#endif 36 37namespace WebCore { 38 39class ScrollbarThemeComposite : public ScrollbarTheme { 40public: 41 // Implement ScrollbarTheme interface 42 virtual bool paint(ScrollbarThemeClient*, GraphicsContext*, const IntRect& damageRect); 43 virtual ScrollbarPart hitTest(ScrollbarThemeClient*, const IntPoint&); 44 virtual void invalidatePart(ScrollbarThemeClient*, ScrollbarPart); 45 virtual int thumbPosition(ScrollbarThemeClient*); 46 virtual int thumbLength(ScrollbarThemeClient*); 47 virtual int trackPosition(ScrollbarThemeClient*); 48 virtual int trackLength(ScrollbarThemeClient*); 49 virtual void paintScrollCorner(ScrollView*, GraphicsContext*, const IntRect& cornerRect); 50 virtual void paintOverhangAreas(ScrollView*, GraphicsContext*, const IntRect& horizontalOverhangArea, const IntRect& verticalOverhangArea, const IntRect& dirtyRect); 51 52 virtual bool hasButtons(ScrollbarThemeClient*) = 0; 53 virtual bool hasThumb(ScrollbarThemeClient*) = 0; 54 55 virtual IntRect backButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool painting = false) = 0; 56 virtual IntRect forwardButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool painting = false) = 0; 57 virtual IntRect trackRect(ScrollbarThemeClient*, bool painting = false) = 0; 58 virtual IntRect thumbRect(ScrollbarThemeClient*); 59 60 virtual void splitTrack(ScrollbarThemeClient*, const IntRect& track, IntRect& startTrack, IntRect& thumb, IntRect& endTrack); 61 62 virtual int minimumThumbLength(ScrollbarThemeClient*); 63 64 virtual void willPaintScrollbar(GraphicsContext*, ScrollbarThemeClient*) { } 65 virtual void didPaintScrollbar(GraphicsContext*, ScrollbarThemeClient*) { } 66 67 virtual void paintScrollbarBackground(GraphicsContext*, ScrollbarThemeClient*) { } 68 virtual void paintTrackBackground(GraphicsContext*, ScrollbarThemeClient*, const IntRect&) { } 69 virtual void paintTrackPiece(GraphicsContext*, ScrollbarThemeClient*, const IntRect&, ScrollbarPart) { } 70 virtual void paintButton(GraphicsContext*, ScrollbarThemeClient*, const IntRect&, ScrollbarPart) { } 71 virtual void paintThumb(GraphicsContext*, ScrollbarThemeClient*, const IntRect&) { } 72 73 virtual IntRect constrainTrackRectToTrackPieces(ScrollbarThemeClient*, const IntRect& rect) { return rect; } 74}; 75 76} 77#endif 78