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