1 /* 2 * Copyright (C) 2012 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 WebScrollbarThemeGeometry_h 27 #define WebScrollbarThemeGeometry_h 28 29 #include "WebRect.h" 30 31 namespace blink { 32 33 class WebScrollbar; 34 35 class BLINK_PLATFORM_EXPORT WebScrollbarThemeGeometry { 36 public: 37 virtual ~WebScrollbarThemeGeometry() { } 38 39 virtual WebScrollbarThemeGeometry* clone() const = 0; 40 virtual int thumbPosition(WebScrollbar*) = 0; 41 virtual int thumbLength(WebScrollbar*) = 0; 42 virtual int trackPosition(WebScrollbar*) = 0; 43 virtual int trackLength(WebScrollbar*) = 0; 44 virtual bool hasButtons(WebScrollbar*) = 0; 45 virtual bool hasThumb(WebScrollbar*) = 0; 46 virtual WebRect trackRect(WebScrollbar*) = 0; 47 virtual WebRect thumbRect(WebScrollbar*) = 0; 48 virtual int minimumThumbLength(WebScrollbar*) = 0; 49 virtual int scrollbarThickness(WebScrollbar*) = 0; 50 virtual WebRect backButtonStartRect(WebScrollbar*) = 0; 51 virtual WebRect backButtonEndRect(WebScrollbar*) = 0; 52 virtual WebRect forwardButtonStartRect(WebScrollbar*) = 0; 53 virtual WebRect forwardButtonEndRect(WebScrollbar*) = 0; 54 virtual WebRect constrainTrackRectToTrackPieces(WebScrollbar*, const WebRect&) = 0; 55 virtual void splitTrack(WebScrollbar*, const WebRect& track, WebRect& startTrack, WebRect& thumb, WebRect& endTrack) = 0; 56 }; 57 58 } // namespace blink 59 60 #endif 61
