third_party/WebKit/Source/core/html/TextMetrics.h

   1 /*
   2  * Copyright (C) 2008 Apple 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  * 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 #ifndef TextMetrics_h
  27 #define TextMetrics_h
  28
  29 #include "bindings/core/v8/ScriptWrappable.h"
  30 #include "core/CoreExport.h"
  31 #include "platform/heap/Handle.h"
  32
  33 namespace blink {
  34
  35 class CORE_EXPORT TextMetrics final : public GarbageCollected<TextMetrics>, public ScriptWrappable {
  36     DEFINE_WRAPPERTYPEINFO();
  37 public:
  38     static TextMetrics* create()
  39     {
  40         return new TextMetrics;
  41     }
  42
  43     float width() const { return m_width; }
  44     void setWidth(float w) { m_width = w; }
  45
  46     float actualBoundingBoxLeft() const { return m_actualBoundingBoxLeft; }
  47     void setActualBoundingBoxLeft(float actualBoundingBoxLeft) { m_actualBoundingBoxLeft = actualBoundingBoxLeft; }
  48
  49     float actualBoundingBoxRight() const { return m_actualBoundingBoxRight; }
  50     void setActualBoundingBoxRight(float actualBoundingBoxRight) { m_actualBoundingBoxRight = actualBoundingBoxRight; }
  51
  52     float fontBoundingBoxAscent() const { return m_fontBoundingBoxAscent; }
  53     void setFontBoundingBoxAscent(float fontBoundingBoxAscent) { m_fontBoundingBoxAscent = fontBoundingBoxAscent; }
  54
  55     float fontBoundingBoxDescent() const { return m_fontBoundingBoxDescent; }
  56     void setFontBoundingBoxDescent(float fontBoundingBoxDescent) { m_fontBoundingBoxDescent = fontBoundingBoxDescent; }
  57
  58     float actualBoundingBoxAscent() const { return m_actualBoundingBoxAscent; }
  59     void setActualBoundingBoxAscent(float actualBoundingBoxAscent) { m_actualBoundingBoxAscent = actualBoundingBoxAscent; }
  60
  61     float actualBoundingBoxDescent() const { return m_actualBoundingBoxDescent; }
  62     void setActualBoundingBoxDescent(float actualBoundingBoxDescent) { m_actualBoundingBoxDescent = actualBoundingBoxDescent; }
  63
  64     float emHeightAscent() const { return m_emHeightAscent; }
  65     void setEmHeightAscent(float emHeightAscent) { m_emHeightAscent = emHeightAscent; }
  66
  67     float emHeightDescent() const { return m_emHeightDescent; }
  68     void setEmHeightDescent(float emHeightDescent) { m_emHeightDescent = emHeightDescent; }
  69
  70     float hangingBaseline() const { return m_hangingBaseline; }
  71     void setHangingBaseline(float hangingBaseline) { m_hangingBaseline = hangingBaseline; }
  72
  73     float alphabeticBaseline() const { return m_alphabeticBaseline; }
  74     void setAlphabeticBaseline(float alphabeticBaseline) { m_alphabeticBaseline = alphabeticBaseline; }
  75
  76     float ideographicBaseline() const { return m_ideographicBaseline; }
  77     void setIdeographicBaseline(float ideographicBaseline) { m_ideographicBaseline = ideographicBaseline; }
  78
  79     DEFINE_INLINE_TRACE() { }
  80
  81 private:
  82     TextMetrics()
  83         : m_width(0)
  84         , m_actualBoundingBoxLeft(0)
  85         , m_actualBoundingBoxRight(0)
  86         , m_fontBoundingBoxAscent(0)
  87         , m_fontBoundingBoxDescent(0)
  88         , m_actualBoundingBoxAscent(0)
  89         , m_actualBoundingBoxDescent(0)
  90         , m_emHeightAscent(0)
  91         , m_emHeightDescent(0)
  92         , m_hangingBaseline(0)
  93         , m_alphabeticBaseline(0)
  94         , m_ideographicBaseline(0) { }
  95
  96     // x-direction
  97     float m_width;
  98     float m_actualBoundingBoxLeft;
  99     float m_actualBoundingBoxRight;
 100
 101     // y-direction
 102     float m_fontBoundingBoxAscent;
 103     float m_fontBoundingBoxDescent;
 104     float m_actualBoundingBoxAscent;
 105     float m_actualBoundingBoxDescent;
 106     float m_emHeightAscent;
 107     float m_emHeightDescent;
 108     float m_hangingBaseline;
 109     float m_alphabeticBaseline;
 110     float m_ideographicBaseline;
 111 };
 112
 113 } // namespace blink
 114
 115 #endif // TextMetrics_h