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 COMPUTER, 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 COMPUTER, 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#ifndef RenderVTTCue_h
27#define RenderVTTCue_h
28
29#include "core/rendering/RenderBlockFlow.h"
30#include "core/rendering/RenderInline.h"
31#include "platform/geometry/FloatPoint.h"
32
33namespace blink {
34
35class VTTCue;
36class VTTCueBox;
37
38class RenderVTTCue FINAL : public RenderBlockFlow {
39public:
40    explicit RenderVTTCue(VTTCueBox*);
41
42private:
43    virtual void layout() OVERRIDE;
44
45    bool isOutside() const;
46    bool isOverlapping() const;
47    bool shouldSwitchDirection(InlineFlowBox*, LayoutUnit) const;
48
49    void moveBoxesByStep(LayoutUnit);
50    bool switchDirection(bool&, LayoutUnit&);
51
52    bool findFirstLineBox(InlineFlowBox*&);
53    bool initializeLayoutParameters(InlineFlowBox*, LayoutUnit&, LayoutUnit&);
54    void placeBoxInDefaultPosition(LayoutUnit, bool&);
55    void repositionCueSnapToLinesSet();
56    void repositionCueSnapToLinesNotSet();
57
58    VTTCue* m_cue;
59    FloatPoint m_fallbackPosition;
60};
61
62} // namespace blink
63
64#endif // RenderVTTCue_h
65