michael@0: /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "gfxFontFeatures.h"
michael@0: #include "nsUnicharUtils.h"
michael@0: #include "nsHashKeys.h"
michael@0: 
michael@0: using namespace mozilla;
michael@0: 
michael@0: gfxFontFeatureValueSet::gfxFontFeatureValueSet()
michael@0:     : mFontFeatureValues(10)
michael@0: {
michael@0: }
michael@0: 
michael@0: bool
michael@0: gfxFontFeatureValueSet::GetFontFeatureValuesFor(const nsAString& aFamily,
michael@0:                                                 uint32_t aVariantProperty,
michael@0:                                                 const nsAString& aName,
michael@0:                                                 nsTArray<uint32_t>& aValues)
michael@0: {
michael@0:     nsAutoString family(aFamily), name(aName);
michael@0:     ToLowerCase(family);
michael@0:     ToLowerCase(name);
michael@0:     FeatureValueHashKey key(family, aVariantProperty, name);
michael@0: 
michael@0:     aValues.Clear();
michael@0:     FeatureValueHashEntry *entry = mFontFeatureValues.GetEntry(key);
michael@0:     if (entry) {
michael@0:         NS_ASSERTION(entry->mValues.Length() > 0,
michael@0:                      "null array of font feature values");
michael@0:         aValues.AppendElements(entry->mValues);
michael@0:         return true;
michael@0:     }
michael@0: 
michael@0:     return false;
michael@0: }
michael@0: 
michael@0: 
michael@0: void
michael@0: gfxFontFeatureValueSet::AddFontFeatureValues(const nsAString& aFamily,
michael@0:                  const nsTArray<gfxFontFeatureValueSet::FeatureValues>& aValues)
michael@0: {
michael@0:     nsAutoString family(aFamily);
michael@0:     ToLowerCase(family);
michael@0: 
michael@0:     uint32_t i, numFeatureValues = aValues.Length();
michael@0:     for (i = 0; i < numFeatureValues; i++) {
michael@0:         const FeatureValues& fv = aValues.ElementAt(i);
michael@0:         uint32_t alternate = fv.alternate;
michael@0:         uint32_t j, numValues = fv.valuelist.Length();
michael@0:         for (j = 0; j < numValues; j++) {
michael@0:             const ValueList& v = fv.valuelist.ElementAt(j);
michael@0:             nsAutoString name(v.name);
michael@0:             ToLowerCase(name);
michael@0:             FeatureValueHashKey key(family, alternate, name);
michael@0:             FeatureValueHashEntry *entry = mFontFeatureValues.PutEntry(key);
michael@0:             entry->mKey = key;
michael@0:             entry->mValues = v.featureSelectors;
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: bool
michael@0: gfxFontFeatureValueSet::FeatureValueHashEntry::KeyEquals(
michael@0:                                                const KeyTypePointer aKey) const
michael@0: {
michael@0:     return aKey->mPropVal == mKey.mPropVal &&
michael@0:            aKey->mFamily.Equals(mKey.mFamily) &&
michael@0:            aKey->mName.Equals(mKey.mName);
michael@0: }
michael@0: 
michael@0: PLDHashNumber
michael@0: gfxFontFeatureValueSet::FeatureValueHashEntry::HashKey(
michael@0:                                                      const KeyTypePointer aKey)
michael@0: {
michael@0:     return HashString(aKey->mFamily) + HashString(aKey->mName) +
michael@0:            aKey->mPropVal * uint32_t(0xdeadbeef);
michael@0: }
michael@0: