third_party/WebKit/Source/core/style/StyleRareInheritedData.h

/*
 * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
 *           (C) 2000 Antti Koivisto (koivisto@kde.org)
 *           (C) 2000 Dirk Mueller (mueller@kde.org)
 * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
 * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#ifndef StyleRareInheritedData_h
#define StyleRareInheritedData_h

#include "core/CoreExport.h"
#include "core/css/StyleAutoColor.h"
#include "core/css/StyleColor.h"
#include "core/style/TextSizeAdjust.h"
#include "platform/Length.h"
#include "platform/graphics/Color.h"
#include "platform/heap/Handle.h"
#include "platform/text/TabSize.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefCounted.h"
#include "wtf/RefVector.h"
#include "wtf/text/AtomicString.h"

namespace blink {

class AppliedTextDecoration;
class CursorData;
class QuotesData;
class ShadowList;
class StyleImage;
class StyleInheritedVariables;

typedef RefVector<AppliedTextDecoration> AppliedTextDecorationList;
typedef HeapVector<CursorData> CursorList;

// This struct is for rarely used inherited CSS3, CSS2, and WebKit-specific
// properties.  By grouping them together, we save space, and only allocate this
// object when someone actually uses one of these properties.
// TODO(sashab): Move this into a private class on ComputedStyle, and remove
// all methods on it, merging them into copy/creation methods on ComputedStyle
// instead. Keep the allocation logic, only allocating a new object if needed.
class CORE_EXPORT StyleRareInheritedData
    : public RefCounted<StyleRareInheritedData> {
 public:
  static PassRefPtr<StyleRareInheritedData> create() {
    return adoptRef(new StyleRareInheritedData);
  }
  PassRefPtr<StyleRareInheritedData> copy() const {
    return adoptRef(new StyleRareInheritedData(*this));
  }
  ~StyleRareInheritedData();

  bool operator==(const StyleRareInheritedData&) const;
  bool operator!=(const StyleRareInheritedData& o) const {
    return !(*this == o);
  }
  bool shadowDataEquivalent(const StyleRareInheritedData&) const;
  bool quotesDataEquivalent(const StyleRareInheritedData&) const;

  Persistent<StyleImage> listStyleImage;

  StyleColor textStrokeColor() const {
    return m_textStrokeColorIsCurrentColor ? StyleColor::currentColor()
                                           : StyleColor(m_textStrokeColor);
  }
  StyleColor textFillColor() const {
    return m_textFillColorIsCurrentColor ? StyleColor::currentColor()
                                         : StyleColor(m_textFillColor);
  }
  StyleColor textEmphasisColor() const {
    return m_textEmphasisColorIsCurrentColor ? StyleColor::currentColor()
                                             : StyleColor(m_textEmphasisColor);
  }
  StyleAutoColor caretColor() const {
    if (m_caretColorIsCurrentColor)
      return StyleAutoColor::currentColor();
    if (m_caretColorIsAuto)
      return StyleAutoColor::autoColor();
    return StyleAutoColor(m_caretColor);
  }
  StyleColor visitedLinkTextStrokeColor() const {
    return m_visitedLinkTextStrokeColorIsCurrentColor
               ? StyleColor::currentColor()
               : StyleColor(m_visitedLinkTextStrokeColor);
  }
  StyleColor visitedLinkTextFillColor() const {
    return m_visitedLinkTextFillColorIsCurrentColor
               ? StyleColor::currentColor()
               : StyleColor(m_visitedLinkTextFillColor);
  }
  StyleColor visitedLinkTextEmphasisColor() const {
    return m_visitedLinkTextEmphasisColorIsCurrentColor
               ? StyleColor::currentColor()
               : StyleColor(m_visitedLinkTextEmphasisColor);
  }
  StyleAutoColor visitedLinkCaretColor() const {
    if (m_visitedLinkCaretColorIsCurrentColor)
      return StyleAutoColor::currentColor();
    if (m_visitedLinkCaretColorIsAuto)
      return StyleAutoColor::autoColor();
    return StyleAutoColor(m_visitedLinkCaretColor);
  }

  void setTextStrokeColor(const StyleColor& color) {
    m_textStrokeColor = color.resolve(Color());
    m_textStrokeColorIsCurrentColor = color.isCurrentColor();
  }
  void setTextFillColor(const StyleColor& color) {
    m_textFillColor = color.resolve(Color());
    m_textFillColorIsCurrentColor = color.isCurrentColor();
  }
  void setTextEmphasisColor(const StyleColor& color) {
    m_textEmphasisColor = color.resolve(Color());
    m_textEmphasisColorIsCurrentColor = color.isCurrentColor();
  }
  void setCaretColor(const StyleAutoColor& color) {
    m_caretColor = color.resolve(Color());
    m_caretColorIsCurrentColor = color.isCurrentColor();
    m_caretColorIsAuto = color.isAutoColor();
  }
  void setVisitedLinkTextStrokeColor(const StyleColor& color) {
    m_visitedLinkTextStrokeColor = color.resolve(Color());
    m_visitedLinkTextStrokeColorIsCurrentColor = color.isCurrentColor();
  }
  void setVisitedLinkTextFillColor(const StyleColor& color) {
    m_visitedLinkTextFillColor = color.resolve(Color());
    m_visitedLinkTextFillColorIsCurrentColor = color.isCurrentColor();
  }
  void setVisitedLinkTextEmphasisColor(const StyleColor& color) {
    m_visitedLinkTextEmphasisColor = color.resolve(Color());
    m_visitedLinkTextEmphasisColorIsCurrentColor = color.isCurrentColor();
  }
  void setVisitedLinkCaretColor(const StyleAutoColor& color) {
    m_visitedLinkCaretColor = color.resolve(Color());
    m_visitedLinkCaretColorIsCurrentColor = color.isCurrentColor();
    m_visitedLinkCaretColorIsAuto = color.isAutoColor();
  }

  Color m_textStrokeColor;
  float textStrokeWidth;
  Color m_textFillColor;
  Color m_textEmphasisColor;
  Color m_caretColor;

  Color m_visitedLinkTextStrokeColor;
  Color m_visitedLinkTextFillColor;
  Color m_visitedLinkTextEmphasisColor;
  Color m_visitedLinkCaretColor;

  RefPtr<ShadowList>
      textShadow;  // Our text shadow information for shadowed text drawing.
  AtomicString
      highlight;  // Apple-specific extension for custom highlight rendering.

  Persistent<CursorList> cursorData;

  Length indent;
  float m_effectiveZoom;

  // Paged media properties.
  short widows;
  short orphans;

  unsigned m_textStrokeColorIsCurrentColor : 1;
  unsigned m_textFillColorIsCurrentColor : 1;
  unsigned m_textEmphasisColorIsCurrentColor : 1;
  unsigned m_caretColorIsCurrentColor : 1;
  unsigned m_caretColorIsAuto : 1;
  unsigned m_visitedLinkTextStrokeColorIsCurrentColor : 1;
  unsigned m_visitedLinkTextFillColorIsCurrentColor : 1;
  unsigned m_visitedLinkTextEmphasisColorIsCurrentColor : 1;
  unsigned m_visitedLinkCaretColorIsCurrentColor : 1;
  unsigned m_visitedLinkCaretColorIsAuto : 1;

  unsigned textSecurity : 2;          // ETextSecurity
  unsigned userModify : 2;            // EUserModify (editing)
  unsigned wordBreak : 2;             // EWordBreak
  unsigned overflowWrap : 1;          // EOverflowWrap
  unsigned lineBreak : 3;             // LineBreak
  unsigned userSelect : 2;            // EUserSelect
  unsigned speak : 3;                 // ESpeak
  unsigned hyphens : 2;               // Hyphens
  unsigned textEmphasisFill : 1;      // TextEmphasisFill
  unsigned textEmphasisMark : 3;      // TextEmphasisMark
  unsigned textEmphasisPosition : 1;  // TextEmphasisPosition
  unsigned m_textAlignLast : 3;       // TextAlignLast
  unsigned m_textJustify : 2;         // TextJustify
  unsigned m_textOrientation : 2;     // TextOrientation
  unsigned m_textCombine : 1;         // CSS3 text-combine-upright properties
  unsigned m_textIndentLine : 1;      // TextIndentEachLine
  unsigned m_textIndentType : 1;      // TextIndentHanging
  // CSS Image Values Level 3
  unsigned m_imageRendering : 3;         // EImageRendering
  unsigned m_textUnderlinePosition : 1;  // TextUnderlinePosition
  unsigned m_textDecorationSkip : 3;     // TextDecorationSkip
  unsigned m_rubyPosition : 1;           // RubyPosition

  // Though will-change is not itself an inherited property, the intent
  // expressed by 'will-change: contents' includes descendants.
  unsigned m_subtreeWillChangeContents : 1;

  unsigned m_selfOrAncestorHasDirAutoAttribute : 1;

  unsigned m_respectImageOrientation : 1;

  unsigned m_snapHeightPosition : 7;

  AtomicString hyphenationString;
  short hyphenationLimitBefore;
  short hyphenationLimitAfter;
  short hyphenationLimitLines;

  uint8_t m_snapHeightUnit;

  AtomicString textEmphasisCustomMark;
  RefPtr<QuotesData> quotes;

  Color tapHighlightColor;

  RefPtr<AppliedTextDecorationList> appliedTextDecorations;
  TabSize m_tabSize;

  RefPtr<StyleInheritedVariables> variables;
  TextSizeAdjust m_textSizeAdjust;

 private:
  StyleRareInheritedData();
  StyleRareInheritedData(const StyleRareInheritedData&);
};

}  // namespace blink

#endif  // StyleRareInheritedData_h