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47 lines
1.7 KiB
C++
47 lines
1.7 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 "nsAtom.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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Span<const uint32_t> gfxFontFeatureValueSet::GetFontFeatureValuesFor(
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const nsACString& aFamily, uint32_t aVariantProperty, nsAtom* aName) const {
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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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FeatureValueHashEntry* entry = mFontFeatureValues.GetEntry(key);
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if (!entry) {
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return {};
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}
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NS_ASSERTION(entry->mValues.Length() > 0,
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"null array of font feature values");
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return {entry->mValues};
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}
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nsTArray<uint32_t>* gfxFontFeatureValueSet::AppendFeatureValueHashEntry(
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const nsACString& aFamily, nsAtom* 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 && aKey->mName == mKey.mName &&
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aKey->mFamily.Equals(mKey.mFamily);
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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) + aKey->mName->hash() +
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aKey->mPropVal * uint32_t(0xdeadbeef);
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}
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