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 31namespace WebCore { 32 33class ScrollbarThemeComposite : public ScrollbarTheme { 34public: 35 // Implement ScrollbarTheme interface 36 virtual bool paint(ScrollbarThemeClient*, GraphicsContext*, const IntRect& damageRect); 37 virtual ScrollbarPart hitTest(ScrollbarThemeClient*, const IntPoint&); 38 virtual void invalidatePart(ScrollbarThemeClient*, ScrollbarPart); 39 virtual int thumbPosition(ScrollbarThemeClient*); 40 virtual int thumbLength(ScrollbarThemeClient*); 41 virtual int trackPosition(ScrollbarThemeClient*); 42 virtual int trackLength(ScrollbarThemeClient*); 43 virtual void paintScrollCorner(ScrollView*, GraphicsContext*, const IntRect& cornerRect); 44 virtual void paintOverhangAreas(ScrollView*, GraphicsContext*, const IntRect& horizontalOverhangArea, const IntRect& verticalOverhangArea, const IntRect& dirtyRect); 45 46 virtual bool hasButtons(ScrollbarThemeClient*) = 0; 47 virtual bool hasThumb(ScrollbarThemeClient*) = 0; 48 49 virtual IntRect backButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool painting = false) = 0; 50 virtual IntRect forwardButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool painting = false) = 0; 51 virtual IntRect trackRect(ScrollbarThemeClient*, bool painting = false) = 0; 52 virtual IntRect thumbRect(ScrollbarThemeClient*); 53 54 virtual void splitTrack(ScrollbarThemeClient*, const IntRect& track, IntRect& startTrack, IntRect& thumb, IntRect& endTrack); 55 56 virtual int minimumThumbLength(ScrollbarThemeClient*); 57 58 virtual void paintScrollbarBackground(GraphicsContext*, ScrollbarThemeClient*) { } 59 virtual void paintTrackBackground(GraphicsContext*, ScrollbarThemeClient*, const IntRect&) { } 60 virtual void paintTrackPiece(GraphicsContext*, ScrollbarThemeClient*, const IntRect&, ScrollbarPart) { } 61 virtual void paintButton(GraphicsContext*, ScrollbarThemeClient*, const IntRect&, ScrollbarPart) { } 62 virtual void paintThumb(GraphicsContext*, ScrollbarThemeClient*, const IntRect&) { } 63 64 virtual IntRect constrainTrackRectToTrackPieces(ScrollbarThemeClient*, const IntRect& rect) { return rect; } 65}; 66 67} 68#endif 69