1 /* 2 * Copyright (C) 2013 Google Inc. All rights reserved. 3 * 4 * * Redistributions of source code must retain the above copyright 5 * notice, this list of conditions and the following disclaimer. 6 * * Redistributions in binary form must reproduce the above 7 * copyright notice, this list of conditions and the following disclaimer 8 * in the documentation and/or other materials provided with the 9 * distribution. 10 * * Neither the name of Google Inc. nor the names of its 11 * contributors may be used to endorse or promote products derived from 12 * this software without specific prior written permission. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 15 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 16 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 17 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 18 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 19 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 20 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef StyleBuilderConverter_h 28 #define StyleBuilderConverter_h 29 30 #include "core/css/CSSValue.h" 31 #include "core/css/resolver/StyleResolverState.h" 32 #include "core/rendering/RenderView.h" 33 #include "core/rendering/style/QuotesData.h" 34 #include "core/rendering/style/ShadowList.h" 35 #include "core/rendering/style/StyleReflection.h" 36 #include "core/svg/SVGLength.h" 37 #include "platform/LengthSize.h" 38 #include "platform/fonts/FontDescription.h" 39 40 namespace blink { 41 42 // Note that we assume the parser only allows valid CSSValue types. 43 44 class StyleBuilderConverter { 45 public: 46 static PassRefPtr<StyleReflection> convertBoxReflect(StyleResolverState&, CSSValue*); 47 static AtomicString convertFragmentIdentifier(StyleResolverState&, CSSValue*); 48 static Color convertColor(StyleResolverState&, CSSValue*, bool forVisitedLink = false); 49 template <typename T> static T convertComputedLength(StyleResolverState&, CSSValue*); 50 static LengthBox convertClip(StyleResolverState&, CSSValue*); 51 template <typename T> static T convertFlags(StyleResolverState&, CSSValue*); 52 static PassRefPtr<FontFeatureSettings> convertFontFeatureSettings(StyleResolverState&, CSSValue*); 53 static FontDescription::Size convertFontSize(StyleResolverState&, CSSValue*); 54 static FontWeight convertFontWeight(StyleResolverState&, CSSValue*); 55 static FontDescription::VariantLigatures convertFontVariantLigatures(StyleResolverState&, CSSValue*); 56 static EGlyphOrientation convertGlyphOrientation(StyleResolverState&, CSSValue*); 57 static GridPosition convertGridPosition(StyleResolverState&, CSSValue*); 58 static GridTrackSize convertGridTrackSize(StyleResolverState&, CSSValue*); 59 template <typename T> static T convertLineWidth(StyleResolverState&, CSSValue*); 60 static Length convertLength(StyleResolverState&, CSSValue*); 61 static Length convertLengthOrAuto(StyleResolverState&, CSSValue*); 62 static Length convertLengthSizing(StyleResolverState&, CSSValue*); 63 static Length convertLengthMaxSizing(StyleResolverState&, CSSValue*); 64 static LengthPoint convertLengthPoint(StyleResolverState&, CSSValue*); 65 static LineBoxContain convertLineBoxContain(StyleResolverState&, CSSValue*); 66 static float convertNumberOrPercentage(StyleResolverState&, CSSValue*); 67 static PassRefPtr<QuotesData> convertQuotes(StyleResolverState&, CSSValue*); 68 static LengthSize convertRadius(StyleResolverState&, CSSValue*); 69 static EPaintOrder convertPaintOrder(StyleResolverState&, CSSValue*); 70 static PassRefPtr<ShadowList> convertShadow(StyleResolverState&, CSSValue*); 71 static float convertSpacing(StyleResolverState&, CSSValue*); 72 template <CSSValueID IdForNone> static AtomicString convertString(StyleResolverState&, CSSValue*); 73 static PassRefPtr<SVGLengthList> convertStrokeDasharray(StyleResolverState&, CSSValue*); 74 static StyleColor convertStyleColor(StyleResolverState&, CSSValue*, bool forVisitedLink = false); 75 static Color convertSVGColor(StyleResolverState&, CSSValue*); 76 static PassRefPtr<SVGLength> convertSVGLength(StyleResolverState&, CSSValue*); 77 static float convertTextStrokeWidth(StyleResolverState&, CSSValue*); 78 79 static bool convertGridTrackList(CSSValue*, Vector<GridTrackSize>&, NamedGridLinesMap&, OrderedNamedGridLines&, StyleResolverState&); 80 static void createImplicitNamedGridLinesFromGridArea(const NamedGridAreaMap&, NamedGridLinesMap&, GridTrackSizingDirection); 81 }; 82 83 template <typename T> 84 T StyleBuilderConverter::convertComputedLength(StyleResolverState& state, CSSValue* value) 85 { 86 return toCSSPrimitiveValue(value)->computeLength<T>(state.cssToLengthConversionData()); 87 } 88 89 template <typename T> 90 T StyleBuilderConverter::convertFlags(StyleResolverState& state, CSSValue* value) 91 { 92 T flags = static_cast<T>(0); 93 for (CSSValueListIterator i(value); i.hasMore(); i.advance()) 94 flags |= *toCSSPrimitiveValue(i.value()); 95 return flags; 96 } 97 98 template <typename T> 99 T StyleBuilderConverter::convertLineWidth(StyleResolverState& state, CSSValue* value) 100 { 101 CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value); 102 CSSValueID valueID = primitiveValue->getValueID(); 103 if (valueID == CSSValueThin) 104 return 1; 105 if (valueID == CSSValueMedium) 106 return 3; 107 if (valueID == CSSValueThick) 108 return 5; 109 if (valueID == CSSValueInvalid) { 110 // Any original result that was >= 1 should not be allowed to fall below 1. 111 // This keeps border lines from vanishing. 112 T result = primitiveValue->computeLength<T>(state.cssToLengthConversionData()); 113 if (state.style()->effectiveZoom() < 1.0f && result < 1.0) { 114 T originalLength = primitiveValue->computeLength<T>(state.cssToLengthConversionData().copyWithAdjustedZoom(1.0)); 115 if (originalLength >= 1.0) 116 return 1.0; 117 } 118 return result; 119 } 120 ASSERT_NOT_REACHED(); 121 return 0; 122 } 123 124 template <CSSValueID IdForNone> 125 AtomicString StyleBuilderConverter::convertString(StyleResolverState&, CSSValue* value) 126 { 127 CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value); 128 if (primitiveValue->getValueID() == IdForNone) 129 return nullAtom; 130 return AtomicString(primitiveValue->getStringValue()); 131 } 132 133 } // namespace blink 134 135 #endif 136