webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 375 insertions, 0 deletions

diff --git a/Source/WebCore/css/FontVariantBuilder.cpp b/Source/WebCore/css/FontVariantBuilder.cpp
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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 "CSSPrimitiveValue.h"
+#include "CSSValueList.h"
+#include "CSSValuePool.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 (is<CSSValueList>(value)) {
+        for (auto& item : downcast<CSSValueList>(value)) {
+            switch (downcast<CSSPrimitiveValue>(item.get()).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 (downcast<CSSPrimitiveValue>(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 (is<CSSValueList>(value)) {
+        for (auto& item : downcast<CSSValueList>(value)) {
+            switch (downcast<CSSPrimitiveValue>(item.get()).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(downcast<CSSPrimitiveValue>(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 (is<CSSValueList>(value)) {
+        for (auto& item : downcast<CSSValueList>(value)) {
+            switch (downcast<CSSPrimitiveValue>(item.get()).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(downcast<CSSPrimitiveValue>(value).valueID() == CSSValueNormal);
+
+    return FontVariantEastAsianValues(variant, width, ruby);
+}
+
+Ref<CSSValue> computeFontVariant(const FontVariantSettings& variantSettings)
+{
+    if (variantSettings.isAllNormal())
+        return CSSValuePool::singleton().createIdentifierValue(CSSValueNormal);
+
+    auto list = CSSValueList::createSpaceSeparated();
+
+    switch (variantSettings.commonLigatures) {
+    case FontVariantLigatures::Normal:
+        break;
+    case FontVariantLigatures::Yes:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueCommonLigatures));
+        break;
+    case FontVariantLigatures::No:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueNoCommonLigatures));
+        break;
+    }
+
+    switch (variantSettings.discretionaryLigatures) {
+    case FontVariantLigatures::Normal:
+        break;
+    case FontVariantLigatures::Yes:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueDiscretionaryLigatures));
+        break;
+    case FontVariantLigatures::No:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueNoDiscretionaryLigatures));
+        break;
+    }
+
+    switch (variantSettings.historicalLigatures) {
+    case FontVariantLigatures::Normal:
+        break;
+    case FontVariantLigatures::Yes:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueHistoricalLigatures));
+        break;
+    case FontVariantLigatures::No:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueNoHistoricalLigatures));
+        break;
+    }
+
+    switch (variantSettings.contextualAlternates) {
+    case FontVariantLigatures::Normal:
+        break;
+    case FontVariantLigatures::Yes:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueContextual));
+        break;
+    case FontVariantLigatures::No:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueNoContextual));
+        break;
+    }
+
+    switch (variantSettings.position) {
+    case FontVariantPosition::Normal:
+        break;
+    case FontVariantPosition::Subscript:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueSub));
+        break;
+    case FontVariantPosition::Superscript:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueSuper));
+        break;
+    }
+
+    switch (variantSettings.caps) {
+    case FontVariantCaps::Normal:
+        break;
+    case FontVariantCaps::Small:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueSmallCaps));
+        break;
+    case FontVariantCaps::AllSmall:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueAllSmallCaps));
+        break;
+    case FontVariantCaps::Petite:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValuePetiteCaps));
+        break;
+    case FontVariantCaps::AllPetite:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueAllPetiteCaps));
+        break;
+    case FontVariantCaps::Unicase:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueUnicase));
+        break;
+    case FontVariantCaps::Titling:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueTitlingCaps));
+        break;
+    }
+
+    switch (variantSettings.numericFigure) {
+    case FontVariantNumericFigure::Normal:
+        break;
+    case FontVariantNumericFigure::LiningNumbers:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueLiningNums));
+        break;
+    case FontVariantNumericFigure::OldStyleNumbers:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueOldstyleNums));
+        break;
+    }
+
+    switch (variantSettings.numericSpacing) {
+    case FontVariantNumericSpacing::Normal:
+        break;
+    case FontVariantNumericSpacing::ProportionalNumbers:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueProportionalNums));
+        break;
+    case FontVariantNumericSpacing::TabularNumbers:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueTabularNums));
+        break;
+    }
+
+    switch (variantSettings.numericFraction) {
+    case FontVariantNumericFraction::Normal:
+        break;
+    case FontVariantNumericFraction::DiagonalFractions:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueDiagonalFractions));
+        break;
+    case FontVariantNumericFraction::StackedFractions:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueStackedFractions));
+        break;
+    }
+
+    switch (variantSettings.numericOrdinal) {
+    case FontVariantNumericOrdinal::Normal:
+        break;
+    case FontVariantNumericOrdinal::Yes:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueOrdinal));
+        break;
+    }
+
+    switch (variantSettings.numericSlashedZero) {
+    case FontVariantNumericSlashedZero::Normal:
+        break;
+    case FontVariantNumericSlashedZero::Yes:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueSlashedZero));
+        break;
+    }
+
+    switch (variantSettings.alternates) {
+    case FontVariantAlternates::Normal:
+        break;
+    case FontVariantAlternates::HistoricalForms:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueHistoricalForms));
+        break;
+    }
+
+    switch (variantSettings.eastAsianVariant) {
+    case FontVariantEastAsianVariant::Normal:
+        break;
+    case FontVariantEastAsianVariant::Jis78:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueJis78));
+        break;
+    case FontVariantEastAsianVariant::Jis83:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueJis83));
+        break;
+    case FontVariantEastAsianVariant::Jis90:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueJis90));
+        break;
+    case FontVariantEastAsianVariant::Jis04:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueJis04));
+        break;
+    case FontVariantEastAsianVariant::Simplified:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueSimplified));
+        break;
+    case FontVariantEastAsianVariant::Traditional:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueTraditional));
+        break;
+    }
+
+    switch (variantSettings.eastAsianWidth) {
+    case FontVariantEastAsianWidth::Normal:
+        break;
+    case FontVariantEastAsianWidth::Full:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueFullWidth));
+        break;
+    case FontVariantEastAsianWidth::Proportional:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueProportionalWidth));
+        break;
+    }
+
+    switch (variantSettings.eastAsianRuby) {
+    case FontVariantEastAsianRuby::Normal:
+        break;
+    case FontVariantEastAsianRuby::Yes:
+        list.get().append(CSSValuePool::singleton().createIdentifierValue(CSSValueRuby));
+        break;
+    }
+
+    return WTFMove(list);
+}
+
+}
+