Source/WebCore/css/CSSProperty.cpp

   1 /**
   2  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
   3  * Copyright (C) 2004, 2005, 2006 Apple Inc.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Library General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Library General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Library General Public License
  16  * along with this library; see the file COPYING.LIB.  If not, write to
  17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  18  * Boston, MA 02110-1301, USA.
  19  */
  20
  21 #include "config.h"
  22 #include "CSSProperty.h"
  23
  24 #include "CSSValueList.h"
  25 #include "StylePropertyShorthand.h"
  26 #include "StylePropertyShorthandFunctions.h"
  27 #include <wtf/NeverDestroyed.h>
  28
  29 namespace WebCore {
  30
  31 struct SameSizeAsCSSProperty {
  32     uint32_t bitfields;
  33     void* value;
  34 };
  35
  36 COMPILE_ASSERT(sizeof(CSSProperty) == sizeof(SameSizeAsCSSProperty), CSSProperty_should_stay_small);
  37
  38 CSSPropertyID StylePropertyMetadata::shorthandID() const
  39 {
  40     if (!m_isSetFromShorthand)
  41         return CSSPropertyInvalid;
  42
  43     auto shorthands = matchingShorthandsForLonghand(static_cast<CSSPropertyID>(m_propertyID));
  44     ASSERT(shorthands.size() && m_indexInShorthandsVector >= 0 && m_indexInShorthandsVector < shorthands.size());
  45     return shorthands[m_indexInShorthandsVector].id();
  46 }
  47
  48 void CSSProperty::wrapValueInCommaSeparatedList()
  49 {
  50     auto list = CSSValueList::createCommaSeparated();
  51     list.get().append(m_value.releaseNonNull());
  52     m_value = WTFMove(list);
  53 }
  54
  55 static CSSPropertyID resolveToPhysicalProperty(TextDirection direction, WritingMode writingMode, LogicalBoxSide logicalSide, const StylePropertyShorthand& shorthand)
  56 {
  57     return shorthand.properties()[mapLogicalSideToPhysicalSide(makeTextFlow(writingMode, direction), logicalSide)];
  58 }
  59
  60 enum LogicalExtent { LogicalWidth, LogicalHeight };
  61
  62 static CSSPropertyID resolveToPhysicalProperty(WritingMode writingMode, LogicalExtent logicalSide, const CSSPropertyID* properties)
  63 {
  64     if (writingMode == TopToBottomWritingMode || writingMode == BottomToTopWritingMode)
  65         return properties[logicalSide];
  66     return logicalSide == LogicalWidth ? properties[1] : properties[0];
  67 }
  68
  69 static const StylePropertyShorthand& borderDirections()
  70 {
  71     static const CSSPropertyID properties[4] = { CSSPropertyBorderTop, CSSPropertyBorderRight, CSSPropertyBorderBottom, CSSPropertyBorderLeft };
  72     static const StylePropertyShorthand borderDirections(CSSPropertyBorder, properties);
  73     return borderDirections;
  74 }
  75
  76 CSSPropertyID CSSProperty::resolveDirectionAwareProperty(CSSPropertyID propertyID, TextDirection direction, WritingMode writingMode)
  77 {
  78     switch (propertyID) {
  79     case CSSPropertyWebkitMarginEnd:
  80         return resolveToPhysicalProperty(direction, writingMode, EndSide, marginShorthand());
  81     case CSSPropertyWebkitMarginStart:
  82         return resolveToPhysicalProperty(direction, writingMode, StartSide, marginShorthand());
  83     case CSSPropertyWebkitMarginBefore:
  84         return resolveToPhysicalProperty(direction, writingMode, BeforeSide, marginShorthand());
  85     case CSSPropertyWebkitMarginAfter:
  86         return resolveToPhysicalProperty(direction, writingMode, AfterSide, marginShorthand());
  87     case CSSPropertyWebkitPaddingEnd:
  88         return resolveToPhysicalProperty(direction, writingMode, EndSide, paddingShorthand());
  89     case CSSPropertyWebkitPaddingStart:
  90         return resolveToPhysicalProperty(direction, writingMode, StartSide, paddingShorthand());
  91     case CSSPropertyWebkitPaddingBefore:
  92         return resolveToPhysicalProperty(direction, writingMode, BeforeSide, paddingShorthand());
  93     case CSSPropertyWebkitPaddingAfter:
  94         return resolveToPhysicalProperty(direction, writingMode, AfterSide, paddingShorthand());
  95     case CSSPropertyWebkitBorderEnd:
  96         return resolveToPhysicalProperty(direction, writingMode, EndSide, borderDirections());
  97     case CSSPropertyWebkitBorderStart:
  98         return resolveToPhysicalProperty(direction, writingMode, StartSide, borderDirections());
  99     case CSSPropertyWebkitBorderBefore:
 100         return resolveToPhysicalProperty(direction, writingMode, BeforeSide, borderDirections());
 101     case CSSPropertyWebkitBorderAfter:
 102         return resolveToPhysicalProperty(direction, writingMode, AfterSide, borderDirections());
 103     case CSSPropertyWebkitBorderEndColor:
 104         return resolveToPhysicalProperty(direction, writingMode, EndSide, borderColorShorthand());
 105     case CSSPropertyWebkitBorderStartColor:
 106         return resolveToPhysicalProperty(direction, writingMode, StartSide, borderColorShorthand());
 107     case CSSPropertyWebkitBorderBeforeColor:
 108         return resolveToPhysicalProperty(direction, writingMode, BeforeSide, borderColorShorthand());
 109     case CSSPropertyWebkitBorderAfterColor:
 110         return resolveToPhysicalProperty(direction, writingMode, AfterSide, borderColorShorthand());
 111     case CSSPropertyWebkitBorderEndStyle:
 112         return resolveToPhysicalProperty(direction, writingMode, EndSide, borderStyleShorthand());
 113     case CSSPropertyWebkitBorderStartStyle:
 114         return resolveToPhysicalProperty(direction, writingMode, StartSide, borderStyleShorthand());
 115     case CSSPropertyWebkitBorderBeforeStyle:
 116         return resolveToPhysicalProperty(direction, writingMode, BeforeSide, borderStyleShorthand());
 117     case CSSPropertyWebkitBorderAfterStyle:
 118         return resolveToPhysicalProperty(direction, writingMode, AfterSide, borderStyleShorthand());
 119     case CSSPropertyWebkitBorderEndWidth:
 120         return resolveToPhysicalProperty(direction, writingMode, EndSide, borderWidthShorthand());
 121     case CSSPropertyWebkitBorderStartWidth:
 122         return resolveToPhysicalProperty(direction, writingMode, StartSide, borderWidthShorthand());
 123     case CSSPropertyWebkitBorderBeforeWidth:
 124         return resolveToPhysicalProperty(direction, writingMode, BeforeSide, borderWidthShorthand());
 125     case CSSPropertyWebkitBorderAfterWidth:
 126         return resolveToPhysicalProperty(direction, writingMode, AfterSide, borderWidthShorthand());
 127     case CSSPropertyWebkitLogicalWidth: {
 128         const CSSPropertyID properties[2] = { CSSPropertyWidth, CSSPropertyHeight };
 129         return resolveToPhysicalProperty(writingMode, LogicalWidth, properties);
 130     }
 131     case CSSPropertyWebkitLogicalHeight: {
 132         const CSSPropertyID properties[2] = { CSSPropertyWidth, CSSPropertyHeight };
 133         return resolveToPhysicalProperty(writingMode, LogicalHeight, properties);
 134     }
 135     case CSSPropertyWebkitMinLogicalWidth: {
 136         const CSSPropertyID properties[2] = { CSSPropertyMinWidth, CSSPropertyMinHeight };
 137         return resolveToPhysicalProperty(writingMode, LogicalWidth, properties);
 138     }
 139     case CSSPropertyWebkitMinLogicalHeight: {
 140         const CSSPropertyID properties[2] = { CSSPropertyMinWidth, CSSPropertyMinHeight };
 141         return resolveToPhysicalProperty(writingMode, LogicalHeight, properties);
 142     }
 143     case CSSPropertyWebkitMaxLogicalWidth: {
 144         const CSSPropertyID properties[2] = { CSSPropertyMaxWidth, CSSPropertyMaxHeight };
 145         return resolveToPhysicalProperty(writingMode, LogicalWidth, properties);
 146     }
 147     case CSSPropertyWebkitMaxLogicalHeight: {
 148         const CSSPropertyID properties[2] = { CSSPropertyMaxWidth, CSSPropertyMaxHeight };
 149         return resolveToPhysicalProperty(writingMode, LogicalHeight, properties);
 150     }
 151     default:
 152         return propertyID;
 153     }
 154 }
 155
 156 bool CSSProperty::isDescriptorOnly(CSSPropertyID propertyID)
 157 {
 158     switch (propertyID) {
 159 #if ENABLE(CSS_DEVICE_ADAPTATION)
 160     case CSSPropertyMinZoom:
 161     case CSSPropertyMaxZoom:
 162     case CSSPropertyOrientation:
 163     case CSSPropertyUserZoom:
 164 #endif
 165     case CSSPropertySrc:
 166     case CSSPropertyUnicodeRange:
 167     case CSSPropertyFontDisplay:
 168         return true;
 169     default:
 170         return false;
 171     }
 172 }
 173
 174 bool CSSProperty::isDirectionAwareProperty(CSSPropertyID propertyID)
 175 {
 176     switch (propertyID) {
 177     case CSSPropertyWebkitBorderEndColor:
 178     case CSSPropertyWebkitBorderEndStyle:
 179     case CSSPropertyWebkitBorderEndWidth:
 180     case CSSPropertyWebkitBorderStartColor:
 181     case CSSPropertyWebkitBorderStartStyle:
 182     case CSSPropertyWebkitBorderStartWidth:
 183     case CSSPropertyWebkitBorderBeforeColor:
 184     case CSSPropertyWebkitBorderBeforeStyle:
 185     case CSSPropertyWebkitBorderBeforeWidth:
 186     case CSSPropertyWebkitBorderAfterColor:
 187     case CSSPropertyWebkitBorderAfterStyle:
 188     case CSSPropertyWebkitBorderAfterWidth:
 189     case CSSPropertyWebkitMarginEnd:
 190     case CSSPropertyWebkitMarginStart:
 191     case CSSPropertyWebkitMarginBefore:
 192     case CSSPropertyWebkitMarginAfter:
 193     case CSSPropertyWebkitPaddingEnd:
 194     case CSSPropertyWebkitPaddingStart:
 195     case CSSPropertyWebkitPaddingBefore:
 196     case CSSPropertyWebkitPaddingAfter:
 197     case CSSPropertyWebkitLogicalWidth:
 198     case CSSPropertyWebkitLogicalHeight:
 199     case CSSPropertyWebkitMinLogicalWidth:
 200     case CSSPropertyWebkitMinLogicalHeight:
 201     case CSSPropertyWebkitMaxLogicalWidth:
 202     case CSSPropertyWebkitMaxLogicalHeight:
 203         return true;
 204     default:
 205         return false;
 206     }
 207 }
 208
 209 } // namespace WebCore