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 namespace WebCore { 32 33 class ScrollbarThemeComposite : public ScrollbarTheme { 34 public: 35 virtual bool paint(Scrollbar*, GraphicsContext* context, const IntRect& damageRect); 36 37 virtual ScrollbarPart hitTest(Scrollbar*, const PlatformMouseEvent&); 38 39 virtual void invalidatePart(Scrollbar*, ScrollbarPart); 40 41 virtual int thumbPosition(Scrollbar*); 42 virtual int thumbLength(Scrollbar*); 43 virtual int trackPosition(Scrollbar*); 44 virtual int trackLength(Scrollbar*); 45 46 virtual void paintScrollCorner(ScrollView*, GraphicsContext*, const IntRect& cornerRect); 47 48 protected: 49 virtual bool hasButtons(Scrollbar*) = 0; 50 virtual bool hasThumb(Scrollbar*) = 0; 51 52 virtual IntRect backButtonRect(Scrollbar*, ScrollbarPart, bool painting = false) = 0; 53 virtual IntRect forwardButtonRect(Scrollbar*, ScrollbarPart, bool painting = false) = 0; 54 virtual IntRect trackRect(Scrollbar*, bool painting = false) = 0; 55 56 virtual void splitTrack(Scrollbar*, const IntRect& track, IntRect& startTrack, IntRect& thumb, IntRect& endTrack); 57 58 virtual int minimumThumbLength(Scrollbar*); 59 60 virtual void paintScrollbarBackground(GraphicsContext*, Scrollbar*) {} 61 virtual void paintTrackBackground(GraphicsContext*, Scrollbar*, const IntRect&) {} 62 virtual void paintTrackPiece(GraphicsContext*, Scrollbar*, const IntRect&, ScrollbarPart) {} 63 virtual void paintButton(GraphicsContext*, Scrollbar*, const IntRect&, ScrollbarPart) {} 64 virtual void paintThumb(GraphicsContext*, Scrollbar*, const IntRect&) {} 65 virtual void paintTickmarks(GraphicsContext*, Scrollbar*, const IntRect&) {} 66 67 virtual IntRect constrainTrackRectToTrackPieces(Scrollbar*, const IntRect& rect) { return rect; } 68 }; 69 70 } 71 #endif 72
