third_party/WebKit/Source/core/layout/LayoutVTTCue.h

   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 LayoutVTTCue_h
  27 #define LayoutVTTCue_h
  28
  29 #include "core/layout/LayoutBlockFlow.h"
  30 #include "platform/heap/Handle.h"
  31
  32 namespace blink {
  33
  34 class VTTCueBox;
  35
  36 class LayoutVTTCue final : public LayoutBlockFlow {
  37 public:
  38     LayoutVTTCue(ContainerNode*, float snapToLinesPosition);
  39
  40     // The computed line position for snap-to-lines layout, and NaN for
  41     // non-snap-to-lines layout where no adjustment should take place.
  42     float snapToLinesPosition() { return m_snapToLinesPosition; }
  43
  44 private:
  45     void layout() override;
  46
  47     void repositionCueSnapToLinesNotSet();
  48
  49     float m_snapToLinesPosition;
  50 };
  51
  52 } // namespace blink
  53
  54 #endif // LayoutVTTCue_h