1/*
2 * Copyright (C) 2013 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 ScrollbarThemeMacOverlayAPI_h
32#define ScrollbarThemeMacOverlayAPI_h
33
34#include "platform/scroll/ScrollbarThemeMacCommon.h"
35
36typedef id ScrollbarPainter;
37
38namespace WebCore {
39
40class PLATFORM_EXPORT ScrollbarThemeMacOverlayAPI : public ScrollbarThemeMacCommon {
41public:
42    virtual void updateEnabledState(ScrollbarThemeClient*) OVERRIDE;
43    virtual int scrollbarThickness(ScrollbarControlSize = RegularScrollbar) OVERRIDE;
44    virtual bool usesOverlayScrollbars() const OVERRIDE;
45    virtual void updateScrollbarOverlayStyle(ScrollbarThemeClient*) OVERRIDE;
46    virtual ScrollbarButtonsPlacement buttonsPlacement() const OVERRIDE;
47
48    virtual void registerScrollbar(ScrollbarThemeClient*) OVERRIDE;
49    virtual void unregisterScrollbar(ScrollbarThemeClient*) OVERRIDE;
50
51    void setNewPainterForScrollbar(ScrollbarThemeClient*, ScrollbarPainter);
52    ScrollbarPainter painterForScrollbar(ScrollbarThemeClient*);
53
54    virtual void paintTrackBackground(GraphicsContext*, ScrollbarThemeClient*, const IntRect&) OVERRIDE;
55    virtual void paintThumb(GraphicsContext*, ScrollbarThemeClient*, const IntRect&) OVERRIDE;
56
57protected:
58    virtual IntRect trackRect(ScrollbarThemeClient*, bool painting = false) OVERRIDE;
59    virtual IntRect backButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool painting = false) OVERRIDE;
60    virtual IntRect forwardButtonRect(ScrollbarThemeClient*, ScrollbarPart, bool painting = false) OVERRIDE;
61
62    virtual bool hasButtons(ScrollbarThemeClient*) OVERRIDE { return false; }
63    virtual bool hasThumb(ScrollbarThemeClient*) OVERRIDE;
64
65    virtual int minimumThumbLength(ScrollbarThemeClient*) OVERRIDE;
66};
67
68}
69
70#endif
71