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
39 namespace WebCore {
40
41 // Note that we assume the parser only allows valid CSSValue types.
42
43 class StyleBuilderConverter {
44 public:
45 static PassRefPtr<StyleReflection> convertBoxReflect(StyleResolverState&, CSSValue*);
46 static AtomicString convertFragmentIdentifier(StyleResolverState&, CSSValue*);
47 template <typename T> static T convertComputedLength(StyleResolverState&, CSSValue*);
48 static EGlyphOrientation convertGlyphOrientation(StyleResolverState&, CSSValue*);
49 static GridPosition convertGridPosition(StyleResolverState&, CSSValue*);
50 static GridTrackSize convertGridTrackSize(StyleResolverState&, CSSValue*);
51 template <typename T> static T convertLineWidth(StyleResolverState&, CSSValue*);
52 static Length convertLength(StyleResolverState&, CSSValue*);
53 static Length convertLengthOrAuto(StyleResolverState&, CSSValue*);
54 static Length convertLengthSizing(StyleResolverState&, CSSValue*);
55 static Length convertLengthMaxSizing(StyleResolverState&, CSSValue*);
56 static LengthPoint convertLengthPoint(StyleResolverState&, CSSValue*);
57 static LineBoxContain convertLineBoxContain(StyleResolverState&, CSSValue*);
58 static float convertNumberOrPercentage(StyleResolverState&, CSSValue*);
59 static PassRefPtr<QuotesData> convertQuotes(StyleResolverState&, CSSValue*);
60 static LengthSize convertRadius(StyleResolverState&, CSSValue*);
61 static EPaintOrder convertPaintOrder(StyleResolverState&, CSSValue*);
62 static PassRefPtr<ShadowList> convertShadow(StyleResolverState&, CSSValue*);
63 static float convertSpacing(StyleResolverState&, CSSValue*);
64 template <CSSValueID IdForNone> static AtomicString convertString(StyleResolverState&, CSSValue*);
65 static PassRefPtr<SVGLengthList> convertStrokeDasharray(StyleResolverState&, CSSValue*);
66 static Color convertSVGColor(StyleResolverState&, CSSValue*);
67 static PassRefPtr<SVGLength> convertSVGLength(StyleResolverState&, CSSValue*);
68 static float convertTextStrokeWidth(StyleResolverState&, CSSValue*);
69
70 static bool convertGridTrackList(CSSValue*, Vector<GridTrackSize>&, NamedGridLinesMap&, OrderedNamedGridLines&, StyleResolverState&);
71 static void createImplicitNamedGridLinesFromGridArea(const NamedGridAreaMap&, NamedGridLinesMap&, GridTrackSizingDirection);
72 };
73
74 template <typename T>
convertComputedLength(StyleResolverState & state,CSSValue * value)75 T StyleBuilderConverter::convertComputedLength(StyleResolverState& state, CSSValue* value)
76 {
77 return toCSSPrimitiveValue(value)->computeLength<T>(state.cssToLengthConversionData());
78 }
79
80 template <typename T>
convertLineWidth(StyleResolverState & state,CSSValue * value)81 T StyleBuilderConverter::convertLineWidth(StyleResolverState& state, CSSValue* value)
82 {
83 CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
84 CSSValueID valueID = primitiveValue->getValueID();
85 if (valueID == CSSValueThin)
86 return 1;
87 if (valueID == CSSValueMedium)
88 return 3;
89 if (valueID == CSSValueThick)
90 return 5;
91 if (valueID == CSSValueInvalid) {
92 // Any original result that was >= 1 should not be allowed to fall below 1.
93 // This keeps border lines from vanishing.
94 T result = primitiveValue->computeLength<T>(state.cssToLengthConversionData());
95 if (state.style()->effectiveZoom() < 1.0f && result < 1.0) {
96 T originalLength = primitiveValue->computeLength<T>(state.cssToLengthConversionData().copyWithAdjustedZoom(1.0));
97 if (originalLength >= 1.0)
98 return 1.0;
99 }
100 return result;
101 }
102 ASSERT_NOT_REACHED();
103 return 0;
104 }
105
106 template <CSSValueID IdForNone>
convertString(StyleResolverState &,CSSValue * value)107 AtomicString StyleBuilderConverter::convertString(StyleResolverState&, CSSValue* value)
108 {
109 CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
110 if (primitiveValue->getValueID() == IdForNone)
111 return nullAtom;
112 return AtomicString(primitiveValue->getStringValue());
113 }
114
115 } // namespace WebCore
116
117 #endif
118