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
31namespace blink {
32
33class WebScrollbar;
34
35class BLINK_PLATFORM_EXPORT WebScrollbarThemeGeometry {
36public:
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