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-rw-r--r--gfx/thebes/gfxFontFeatures.cpp47
1 files changed, 47 insertions, 0 deletions
diff --git a/gfx/thebes/gfxFontFeatures.cpp b/gfx/thebes/gfxFontFeatures.cpp
new file mode 100644
index 0000000000..4d1d82927a
--- /dev/null
+++ b/gfx/thebes/gfxFontFeatures.cpp
@@ -0,0 +1,47 @@
+/* -*- 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);
+}