gfx/thebes/gfxFontFeatures.cpp@97036ab72558 (annotated)
gfx/thebes/gfxFontFeatures.cpp
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- |
| michael@0 | 2 | * This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #include "gfxFontFeatures.h" |
| michael@0 | 7 | #include "nsUnicharUtils.h" |
| michael@0 | 8 | #include "nsHashKeys.h" |
| michael@0 | 9 | |
| michael@0 | 10 | using namespace mozilla; |
| michael@0 | 11 | |
| michael@0 | 12 | gfxFontFeatureValueSet::gfxFontFeatureValueSet() |
| michael@0 | 13 | : mFontFeatureValues(10) |
| michael@0 | 14 | { |
| michael@0 | 15 | } |
| michael@0 | 16 | |
| michael@0 | 17 | bool |
| michael@0 | 18 | gfxFontFeatureValueSet::GetFontFeatureValuesFor(const nsAString& aFamily, |
| michael@0 | 19 | uint32_t aVariantProperty, |
| michael@0 | 20 | const nsAString& aName, |
| michael@0 | 21 | nsTArray<uint32_t>& aValues) |
| michael@0 | 22 | { |
| michael@0 | 23 | nsAutoString family(aFamily), name(aName); |
| michael@0 | 24 | ToLowerCase(family); |
| michael@0 | 25 | ToLowerCase(name); |
| michael@0 | 26 | FeatureValueHashKey key(family, aVariantProperty, name); |
| michael@0 | 27 | |
| michael@0 | 28 | aValues.Clear(); |
| michael@0 | 29 | FeatureValueHashEntry *entry = mFontFeatureValues.GetEntry(key); |
| michael@0 | 30 | if (entry) { |
| michael@0 | 31 | NS_ASSERTION(entry->mValues.Length() > 0, |
| michael@0 | 32 | "null array of font feature values"); |
| michael@0 | 33 | aValues.AppendElements(entry->mValues); |
| michael@0 | 34 | return true; |
| michael@0 | 35 | } |
| michael@0 | 36 | |
| michael@0 | 37 | return false; |
| michael@0 | 38 | } |
| michael@0 | 39 | |
| michael@0 | 40 | |
| michael@0 | 41 | void |
| michael@0 | 42 | gfxFontFeatureValueSet::AddFontFeatureValues(const nsAString& aFamily, |
| michael@0 | 43 | const nsTArray<gfxFontFeatureValueSet::FeatureValues>& aValues) |
| michael@0 | 44 | { |
| michael@0 | 45 | nsAutoString family(aFamily); |
| michael@0 | 46 | ToLowerCase(family); |
| michael@0 | 47 | |
| michael@0 | 48 | uint32_t i, numFeatureValues = aValues.Length(); |
| michael@0 | 49 | for (i = 0; i < numFeatureValues; i++) { |
| michael@0 | 50 | const FeatureValues& fv = aValues.ElementAt(i); |
| michael@0 | 51 | uint32_t alternate = fv.alternate; |
| michael@0 | 52 | uint32_t j, numValues = fv.valuelist.Length(); |
| michael@0 | 53 | for (j = 0; j < numValues; j++) { |
| michael@0 | 54 | const ValueList& v = fv.valuelist.ElementAt(j); |
| michael@0 | 55 | nsAutoString name(v.name); |
| michael@0 | 56 | ToLowerCase(name); |
| michael@0 | 57 | FeatureValueHashKey key(family, alternate, name); |
| michael@0 | 58 | FeatureValueHashEntry *entry = mFontFeatureValues.PutEntry(key); |
| michael@0 | 59 | entry->mKey = key; |
| michael@0 | 60 | entry->mValues = v.featureSelectors; |
| michael@0 | 61 | } |
| michael@0 | 62 | } |
| michael@0 | 63 | } |
| michael@0 | 64 | |
| michael@0 | 65 | bool |
| michael@0 | 66 | gfxFontFeatureValueSet::FeatureValueHashEntry::KeyEquals( |
| michael@0 | 67 | const KeyTypePointer aKey) const |
| michael@0 | 68 | { |
| michael@0 | 69 | return aKey->mPropVal == mKey.mPropVal && |
| michael@0 | 70 | aKey->mFamily.Equals(mKey.mFamily) && |
| michael@0 | 71 | aKey->mName.Equals(mKey.mName); |
| michael@0 | 72 | } |
| michael@0 | 73 | |
| michael@0 | 74 | PLDHashNumber |
| michael@0 | 75 | gfxFontFeatureValueSet::FeatureValueHashEntry::HashKey( |
| michael@0 | 76 | const KeyTypePointer aKey) |
| michael@0 | 77 | { |
| michael@0 | 78 | return HashString(aKey->mFamily) + HashString(aKey->mName) + |
| michael@0 | 79 | aKey->mPropVal * uint32_t(0xdeadbeef); |
| michael@0 | 80 | } |
| michael@0 | 81 |
