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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "gfxFontFeatures.h"
#include "nsAtom.h"
#include "nsUnicharUtils.h"
#include "nsHashKeys.h"
using namespace mozilla;
gfxFontFeatureValueSet::gfxFontFeatureValueSet() : mFontFeatureValues(8) {}
Span<const uint32_t> gfxFontFeatureValueSet::GetFontFeatureValuesFor(
const nsACString& aFamily, uint32_t aVariantProperty, nsAtom* aName) const {
nsAutoCString family(aFamily);
ToLowerCase(family);
FeatureValueHashKey key(family, aVariantProperty, aName);
FeatureValueHashEntry* entry = mFontFeatureValues.GetEntry(key);
if (!entry) {
return {};
}
NS_ASSERTION(entry->mValues.Length() > 0,
"null array of font feature values");
return {entry->mValues};
}
nsTArray<uint32_t>* gfxFontFeatureValueSet::AppendFeatureValueHashEntry(
const nsACString& aFamily, nsAtom* aName, uint32_t aAlternate) {
FeatureValueHashKey key(aFamily, aAlternate, aName);
FeatureValueHashEntry* entry = mFontFeatureValues.PutEntry(key);
entry->mKey = key;
return &entry->mValues;
}
bool gfxFontFeatureValueSet::FeatureValueHashEntry::KeyEquals(
const KeyTypePointer aKey) const {
return aKey->mPropVal == mKey.mPropVal && aKey->mName == mKey.mName &&
aKey->mFamily.Equals(mKey.mFamily);
}
PLDHashNumber gfxFontFeatureValueSet::FeatureValueHashEntry::HashKey(
const KeyTypePointer aKey) {
return HashString(aKey->mFamily) + aKey->mName->hash() +
aKey->mPropVal * uint32_t(0xdeadbeef);
}