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71 lines
2.4 KiB
C++
71 lines
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "gfxFontFeatures.h"
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#include "nsUnicharUtils.h"
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#include "nsHashKeys.h"
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using namespace mozilla;
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gfxFontFeatureValueSet::gfxFontFeatureValueSet() : mFontFeatureValues(8) {}
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bool gfxFontFeatureValueSet::GetFontFeatureValuesFor(
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const nsACString& aFamily, uint32_t aVariantProperty,
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const nsAString& aName, nsTArray<uint32_t>& aValues) {
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nsAutoCString family(aFamily);
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ToLowerCase(family);
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FeatureValueHashKey key(family, aVariantProperty, aName);
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aValues.Clear();
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FeatureValueHashEntry* entry = mFontFeatureValues.GetEntry(key);
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if (entry) {
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NS_ASSERTION(entry->mValues.Length() > 0,
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"null array of font feature values");
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aValues.AppendElements(entry->mValues);
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return true;
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}
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return false;
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}
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void gfxFontFeatureValueSet::AddFontFeatureValues(
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const nsACString& aFamily,
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const nsTArray<gfxFontFeatureValueSet::FeatureValues>& aValues) {
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nsAutoCString family(aFamily);
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ToLowerCase(family);
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uint32_t i, numFeatureValues = aValues.Length();
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for (i = 0; i < numFeatureValues; i++) {
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const FeatureValues& fv = aValues.ElementAt(i);
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uint32_t alternate = fv.alternate;
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uint32_t j, numValues = fv.valuelist.Length();
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for (j = 0; j < numValues; j++) {
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const ValueList& v = fv.valuelist.ElementAt(j);
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auto* array = AppendFeatureValueHashEntry(family, v.name, alternate);
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*array = v.featureSelectors;
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}
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}
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}
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nsTArray<uint32_t>* gfxFontFeatureValueSet::AppendFeatureValueHashEntry(
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const nsACString& aFamily, const nsAString& aName, uint32_t aAlternate) {
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FeatureValueHashKey key(aFamily, aAlternate, aName);
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FeatureValueHashEntry* entry = mFontFeatureValues.PutEntry(key);
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entry->mKey = key;
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return &entry->mValues;
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}
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bool gfxFontFeatureValueSet::FeatureValueHashEntry::KeyEquals(
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const KeyTypePointer aKey) const {
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return aKey->mPropVal == mKey.mPropVal &&
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aKey->mFamily.Equals(mKey.mFamily) && aKey->mName.Equals(mKey.mName);
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}
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PLDHashNumber gfxFontFeatureValueSet::FeatureValueHashEntry::HashKey(
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const KeyTypePointer aKey) {
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return HashString(aKey->mFamily) + HashString(aKey->mName) +
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aKey->mPropVal * uint32_t(0xdeadbeef);
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}
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