1/*
2 * Copyright (C) 2012 Victor Carbune (victor@rosedu.org)
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 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#if ENABLE(VIDEO_TRACK)
29
30#include "FloatPoint.h"
31#include "RenderBlockFlow.h"
32
33namespace WebCore {
34
35class RenderBox;
36class VTTCue;
37class VTTCueBox;
38
39class RenderVTTCue final : public RenderBlockFlow {
40 WTF_MAKE_ISO_ALLOCATED(RenderVTTCue);
41public:
42 RenderVTTCue(VTTCueBox&, RenderStyle&&);
43
44private:
45 void layout() override;
46
47 bool isOutside() const;
48 bool rectIsWithinContainer(const IntRect&) const;
49 bool isOverlapping() const;
50 RenderObject* overlappingObject() const;
51 RenderObject* overlappingObjectForRect(const IntRect&) const;
52 bool shouldSwitchDirection(InlineFlowBox*, LayoutUnit) const;
53
54 void moveBoxesByStep(LayoutUnit);
55 bool switchDirection(bool&, LayoutUnit&);
56 void moveIfNecessaryToKeepWithinContainer();
57 bool findNonOverlappingPosition(int& x, int& y) const;
58
59 bool initializeLayoutParameters(InlineFlowBox*&, LayoutUnit&, LayoutUnit&);
60 void placeBoxInDefaultPosition(LayoutUnit, bool&);
61 void repositionCueSnapToLinesSet();
62 void repositionCueSnapToLinesNotSet();
63 void repositionGenericCue();
64
65 VTTCue* m_cue;
66 FloatPoint m_fallbackPosition;
67};
68
69} // namespace WebCore
70
71#endif // ENABLE(VIDEO_TRACK)
72