1 /* 2 * Copyright (c) 2008, 2009, Google 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 are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef ScrollbarThemeChromium_h 32 #define ScrollbarThemeChromium_h 33 34 #include "ScrollbarThemeComposite.h" 35 36 namespace WebCore { 37 38 class PlatformMouseEvent; 39 40 // This class contains the Chromium scrollbar implementations for Windows 41 // and Linux. All of the symbols here in must be defined somewhere in the 42 // code and we manage the platform specific parts by linking in different, 43 // platform specific, files. Methods that we shared across platforms are 44 // implemented in ScrollbarThemeChromium.cpp 45 class ScrollbarThemeChromium : public ScrollbarThemeComposite { 46 public: 47 ScrollbarThemeChromium(); 48 virtual ~ScrollbarThemeChromium(); 49 50 virtual int scrollbarThickness(ScrollbarControlSize = RegularScrollbar); 51 52 virtual void themeChanged(); 53 54 virtual bool invalidateOnMouseEnterExit(); 55 56 protected: hasButtons(Scrollbar *)57 virtual bool hasButtons(Scrollbar*) { return true; } 58 virtual bool hasThumb(Scrollbar*); 59 60 virtual IntRect backButtonRect(Scrollbar*, ScrollbarPart, bool painting = false); 61 virtual IntRect forwardButtonRect(Scrollbar*, ScrollbarPart, bool painting = false); 62 virtual IntRect trackRect(Scrollbar*, bool painting = false); 63 64 virtual void paintScrollCorner(ScrollView*, GraphicsContext*, const IntRect&); 65 virtual bool shouldCenterOnThumb(Scrollbar*, const PlatformMouseEvent&); 66 67 virtual void paintTrackBackground(GraphicsContext*, Scrollbar*, const IntRect&); 68 virtual void paintTrackPiece(GraphicsContext*, Scrollbar*, const IntRect&, ScrollbarPart); 69 virtual void paintButton(GraphicsContext*, Scrollbar*, const IntRect&, ScrollbarPart); 70 virtual void paintThumb(GraphicsContext*, Scrollbar*, const IntRect&); 71 virtual void paintTickmarks(GraphicsContext*, Scrollbar*, const IntRect&); 72 73 private: 74 IntSize buttonSize(Scrollbar*); 75 76 int getThemeState(Scrollbar*, ScrollbarPart) const; 77 int getThemeArrowState(Scrollbar*, ScrollbarPart) const; 78 int getClassicThemeState(Scrollbar*, ScrollbarPart) const; 79 }; 80 81 } // namespace WebCore 82 83 #endif 84