1 /* 2 * Copyright (C) 2011 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 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef ScrollbarThemeOverlay_h 27 #define ScrollbarThemeOverlay_h 28 29 #include "platform/scroll/ScrollbarTheme.h" 30 31 namespace WebCore { 32 33 // This scrollbar theme is used to get overlay scrollbar for platforms other 34 // than Mac. Mac's overlay scrollbars are in ScrollbarThemeMac*. 35 class PLATFORM_EXPORT ScrollbarThemeOverlay : public ScrollbarTheme { 36 public: 37 enum HitTestBehavior { AllowHitTest, DisallowHitTest }; 38 39 ScrollbarThemeOverlay(int thumbThickness, int scrollbarMargin, HitTestBehavior, Color = Color(128, 128, 128, 128)); 40 virtual ~ScrollbarThemeOverlay() { } 41 42 virtual int scrollbarThickness(ScrollbarControlSize) OVERRIDE; 43 virtual bool usesOverlayScrollbars() const OVERRIDE; 44 45 virtual int thumbPosition(ScrollbarThemeClient*) OVERRIDE; 46 virtual int thumbLength(ScrollbarThemeClient*) OVERRIDE; 47 48 virtual bool hasButtons(ScrollbarThemeClient*) OVERRIDE { return false; }; 49 virtual bool hasThumb(ScrollbarThemeClient*) OVERRIDE; 50 51 virtual IntRect backButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool painting = false) OVERRIDE; 52 virtual IntRect forwardButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool painting = false) OVERRIDE; 53 virtual IntRect trackRect(ScrollbarThemeClient*, bool painting = false) OVERRIDE; 54 virtual int thumbThickness(ScrollbarThemeClient*) OVERRIDE; 55 56 virtual void paintThumb(GraphicsContext*, ScrollbarThemeClient*, const IntRect&) OVERRIDE; 57 virtual ScrollbarPart hitTest(ScrollbarThemeClient*, const IntPoint&) OVERRIDE; 58 59 private: 60 int m_thumbThickness; 61 int m_scrollbarMargin; 62 HitTestBehavior m_allowHitTest; 63 Color m_color; 64 }; 65 66 } // namespace WebCore 67 68 #endif 69
