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/*
* Copyright (C) 2015 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "FontVariantBuilder.h"
#include "CSSFunctionValue.h"
#include "CSSPrimitiveValue.h"
#include "CSSValueList.h"
#include "CSSValuePool.h"
#include "StyleBuilderState.h"
#include "TextFlags.h"
namespace WebCore {
FontVariantLigaturesValues extractFontVariantLigatures(const CSSValue& value)
{
FontVariantLigatures common = FontVariantLigatures::Normal;
FontVariantLigatures discretionary = FontVariantLigatures::Normal;
FontVariantLigatures historical = FontVariantLigatures::Normal;
FontVariantLigatures contextualAlternates = FontVariantLigatures::Normal;
if (auto* valueList = dynamicDowncast<CSSValueList>(value)) {
for (auto& item : *valueList) {
switch (item.valueID()) {
case CSSValueNoCommonLigatures:
common = FontVariantLigatures::No;
break;
case CSSValueCommonLigatures:
common = FontVariantLigatures::Yes;
break;
case CSSValueNoDiscretionaryLigatures:
discretionary = FontVariantLigatures::No;
break;
case CSSValueDiscretionaryLigatures:
discretionary = FontVariantLigatures::Yes;
break;
case CSSValueNoHistoricalLigatures:
historical = FontVariantLigatures::No;
break;
case CSSValueHistoricalLigatures:
historical = FontVariantLigatures::Yes;
break;
case CSSValueContextual:
contextualAlternates = FontVariantLigatures::Yes;
break;
case CSSValueNoContextual:
contextualAlternates = FontVariantLigatures::No;
break;
default:
ASSERT_NOT_REACHED();
break;
}
}
} else if (is<CSSPrimitiveValue>(value)) {
switch (value.valueID()) {
case CSSValueNormal:
break;
case CSSValueNone:
common = FontVariantLigatures::No;
discretionary = FontVariantLigatures::No;
historical = FontVariantLigatures::No;
contextualAlternates = FontVariantLigatures::No;
break;
default:
ASSERT_NOT_REACHED();
break;
}
}
return FontVariantLigaturesValues(common, discretionary, historical, contextualAlternates);
}
FontVariantNumericValues extractFontVariantNumeric(const CSSValue& value)
{
FontVariantNumericFigure figure = FontVariantNumericFigure::Normal;
FontVariantNumericSpacing spacing = FontVariantNumericSpacing::Normal;
FontVariantNumericFraction fraction = FontVariantNumericFraction::Normal;
FontVariantNumericOrdinal ordinal = FontVariantNumericOrdinal::Normal;
FontVariantNumericSlashedZero slashedZero = FontVariantNumericSlashedZero::Normal;
if (auto* valueList = dynamicDowncast<CSSValueList>(value)) {
for (auto& item : *valueList) {
switch (item.valueID()) {
case CSSValueLiningNums:
figure = FontVariantNumericFigure::LiningNumbers;
break;
case CSSValueOldstyleNums:
figure = FontVariantNumericFigure::OldStyleNumbers;
break;
case CSSValueProportionalNums:
spacing = FontVariantNumericSpacing::ProportionalNumbers;
break;
case CSSValueTabularNums:
spacing = FontVariantNumericSpacing::TabularNumbers;
break;
case CSSValueDiagonalFractions:
fraction = FontVariantNumericFraction::DiagonalFractions;
break;
case CSSValueStackedFractions:
fraction = FontVariantNumericFraction::StackedFractions;
break;
case CSSValueOrdinal:
ordinal = FontVariantNumericOrdinal::Yes;
break;
case CSSValueSlashedZero:
slashedZero = FontVariantNumericSlashedZero::Yes;
break;
default:
ASSERT_NOT_REACHED();
break;
}
}
} else if (is<CSSPrimitiveValue>(value))
ASSERT(value.valueID() == CSSValueNormal);
return FontVariantNumericValues(figure, spacing, fraction, ordinal, slashedZero);
}
FontVariantEastAsianValues extractFontVariantEastAsian(const CSSValue& value)
{
FontVariantEastAsianVariant variant = FontVariantEastAsianVariant::Normal;
FontVariantEastAsianWidth width = FontVariantEastAsianWidth::Normal;
FontVariantEastAsianRuby ruby = FontVariantEastAsianRuby::Normal;
if (auto* valueList = dynamicDowncast<CSSValueList>(value)) {
for (auto& item : *valueList) {
switch (item.valueID()) {
case CSSValueJis78:
variant = FontVariantEastAsianVariant::Jis78;
break;
case CSSValueJis83:
variant = FontVariantEastAsianVariant::Jis83;
break;
case CSSValueJis90:
variant = FontVariantEastAsianVariant::Jis90;
break;
case CSSValueJis04:
variant = FontVariantEastAsianVariant::Jis04;
break;
case CSSValueSimplified:
variant = FontVariantEastAsianVariant::Simplified;
break;
case CSSValueTraditional:
variant = FontVariantEastAsianVariant::Traditional;
break;
case CSSValueFullWidth:
width = FontVariantEastAsianWidth::Full;
break;
case CSSValueProportionalWidth:
width = FontVariantEastAsianWidth::Proportional;
break;
case CSSValueRuby:
ruby = FontVariantEastAsianRuby::Yes;
break;
default:
ASSERT_NOT_REACHED();
break;
}
}
} else if (is<CSSPrimitiveValue>(value))
ASSERT(value.valueID() == CSSValueNormal);
return FontVariantEastAsianValues(variant, width, ruby);
}
FontVariantAlternates extractFontVariantAlternates(const CSSValue& value, Style::BuilderState& builderState)
{
auto processSingleItemFunction = [&](const CSSFunctionValue& function, String& parameterToSet) -> bool {
if (function.size() != 1) {
builderState.setCurrentPropertyInvalidAtComputedValueTime();
return false;
}
RefPtr primitiveArgument = dynamicDowncast<CSSPrimitiveValue>(function[0]);
if (!primitiveArgument || !primitiveArgument->isCustomIdent()) {
builderState.setCurrentPropertyInvalidAtComputedValueTime();
return false;
}
parameterToSet = primitiveArgument->customIdent();
return true;
};
auto processListFunction = [&](const CSSFunctionValue& function, Vector<String>& parameterToSet) -> bool {
if (!function.size()) {
builderState.setCurrentPropertyInvalidAtComputedValueTime();
return false;
}
for (Ref argument : function) {
RefPtr primitiveArgument = dynamicDowncast<CSSPrimitiveValue>(argument);
if (!primitiveArgument || !primitiveArgument->isCustomIdent()) {
builderState.setCurrentPropertyInvalidAtComputedValueTime();
return false;
}
parameterToSet.append(primitiveArgument->customIdent());
}
return true;
};
auto result = FontVariantAlternates::Normal();
if (RefPtr valueList = dynamicDowncast<CSSValueList>(value)) {
for (Ref item : *valueList) {
if (RefPtr primitive = dynamicDowncast<CSSPrimitiveValue>(item.get())) {
switch (primitive->valueID()) {
case CSSValueHistoricalForms:
result.valuesRef().historicalForms = true;
break;
default:
builderState.setCurrentPropertyInvalidAtComputedValueTime();
return FontVariantAlternates::Normal();
}
} else if (RefPtr function = dynamicDowncast<CSSFunctionValue>(item.get())) {
switch (function->name()) {
case CSSValueSwash:
if (!processSingleItemFunction(*function, result.valuesRef().swash))
return FontVariantAlternates::Normal();
break;
case CSSValueStylistic:
if (!processSingleItemFunction(*function, result.valuesRef().stylistic))
return FontVariantAlternates::Normal();
break;
case CSSValueStyleset:
if (!processListFunction(*function, result.valuesRef().styleset))
return FontVariantAlternates::Normal();
break;
case CSSValueCharacterVariant:
if (!processListFunction(*function, result.valuesRef().characterVariant))
return FontVariantAlternates::Normal();
break;
case CSSValueOrnaments:
if (!processSingleItemFunction(*function, result.valuesRef().ornaments))
return FontVariantAlternates::Normal();
break;
case CSSValueAnnotation:
if (!processSingleItemFunction(*function, result.valuesRef().annotation))
return FontVariantAlternates::Normal();
break;
default:
builderState.setCurrentPropertyInvalidAtComputedValueTime();
return FontVariantAlternates::Normal();
}
} else {
builderState.setCurrentPropertyInvalidAtComputedValueTime();
return FontVariantAlternates::Normal();
}
}
} else if (is<CSSPrimitiveValue>(value)) {
switch (value.valueID()) {
case CSSValueNormal:
break;
case CSSValueHistoricalForms:
result.valuesRef().historicalForms = true;
break;
default:
builderState.setCurrentPropertyInvalidAtComputedValueTime();
return FontVariantAlternates::Normal();
}
}
return result;
}
} // WebCore namespace
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