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gfxMacPlatformFontList.mm
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gfxMacPlatformFontList.mm
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/* -*- Mode: ObjC; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: BSD
*
* Copyright (C) 2006-2009 Mozilla Corporation. All rights reserved.
*
* Contributor(s):
* Vladimir Vukicevic <vladimir@pobox.com>
* Masayuki Nakano <masayuki@d-toybox.com>
* John Daggett <jdaggett@mozilla.com>
* Jonathan Kew <jfkthame@gmail.com>
*
* Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* ***** END LICENSE BLOCK ***** */
#include "mozilla/Logging.h"
#include <algorithm>
#import <AppKit/AppKit.h>
#include "gfxPlatformMac.h"
#include "gfxMacPlatformFontList.h"
#include "gfxMacFont.h"
#include "gfxUserFontSet.h"
#include "harfbuzz/hb.h"
#include "MainThreadUtils.h"
#include "nsServiceManagerUtils.h"
#include "nsTArray.h"
#include "nsDirectoryServiceUtils.h"
#include "nsDirectoryServiceDefs.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsIDirectoryEnumerator.h"
#include "nsCharTraits.h"
#include "nsCocoaFeatures.h"
#include "nsCocoaUtils.h"
#include "gfxFontConstants.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/dom/ContentParent.h"
#include "mozilla/FontPropertyTypes.h"
#include "mozilla/MemoryReporting.h"
#include "mozilla/Preferences.h"
#include "mozilla/Sprintf.h"
#include "mozilla/Telemetry.h"
#include "mozilla/gfx/2D.h"
#include <unistd.h>
#include <time.h>
#include <dlfcn.h>
using namespace mozilla;
using namespace mozilla::gfx;
using mozilla::dom::SystemFontListEntry;
using mozilla::dom::FontFamilyListEntry;
// indexes into the NSArray objects that the Cocoa font manager returns
// as the available members of a family
#define INDEX_FONT_POSTSCRIPT_NAME 0
#define INDEX_FONT_FACE_NAME 1
#define INDEX_FONT_WEIGHT 2
#define INDEX_FONT_TRAITS 3
static const int kAppleMaxWeight = 14;
static const int kAppleExtraLightWeight = 3;
static const int kAppleUltraLightWeight = 2;
static const int gAppleWeightToCSSWeight[] = {
0,
1, // 1.
1, // 2. W1, ultralight
2, // 3. W2, extralight
3, // 4. W3, light
4, // 5. W4, semilight
5, // 6. W5, medium
6, // 7.
6, // 8. W6, semibold
7, // 9. W7, bold
8, // 10. W8, extrabold
8, // 11.
9, // 12. W9, ultrabold
9, // 13
9 // 14
};
// cache Cocoa's "shared font manager" for performance
static NSFontManager* sFontManager;
static void GetStringForNSString(const NSString* aSrc, nsAString& aDest) {
aDest.SetLength([aSrc length]);
[aSrc getCharacters:reinterpret_cast<unichar*>(aDest.BeginWriting())];
}
static NSString* GetNSStringForString(const nsAString& aSrc) {
return [NSString stringWithCharacters:reinterpret_cast<const unichar*>(aSrc.BeginReading())
length:aSrc.Length()];
}
#define LOG_FONTLIST(args) \
MOZ_LOG(gfxPlatform::GetLog(eGfxLog_fontlist), mozilla::LogLevel::Debug, args)
#define LOG_FONTLIST_ENABLED() \
MOZ_LOG_TEST(gfxPlatform::GetLog(eGfxLog_fontlist), mozilla::LogLevel::Debug)
#define LOG_CMAPDATA_ENABLED() \
MOZ_LOG_TEST(gfxPlatform::GetLog(eGfxLog_cmapdata), mozilla::LogLevel::Debug)
#pragma mark -
// Complex scripts will not render correctly unless appropriate AAT or OT
// layout tables are present.
// For OpenType, we also check that the GSUB table supports the relevant
// script tag, to avoid using things like Arial Unicode MS for Lao (it has
// the characters, but lacks OpenType support).
// TODO: consider whether we should move this to gfxFontEntry and do similar
// cmap-masking on other platforms to avoid using fonts that won't shape
// properly.
nsresult MacOSFontEntry::ReadCMAP(FontInfoData* aFontInfoData) {
// attempt this once, if errors occur leave a blank cmap
if (mCharacterMap) {
return NS_OK;
}
RefPtr<gfxCharacterMap> charmap;
nsresult rv;
if (aFontInfoData && (charmap = GetCMAPFromFontInfo(aFontInfoData, mUVSOffset))) {
rv = NS_OK;
} else {
uint32_t kCMAP = TRUETYPE_TAG('c', 'm', 'a', 'p');
charmap = new gfxCharacterMap();
AutoTable cmapTable(this, kCMAP);
if (cmapTable) {
uint32_t cmapLen;
const uint8_t* cmapData =
reinterpret_cast<const uint8_t*>(hb_blob_get_data(cmapTable, &cmapLen));
rv = gfxFontUtils::ReadCMAP(cmapData, cmapLen, *charmap, mUVSOffset);
} else {
rv = NS_ERROR_NOT_AVAILABLE;
}
}
if (NS_SUCCEEDED(rv) && !mIsDataUserFont && !HasGraphiteTables()) {
// For downloadable fonts, trust the author and don't
// try to munge the cmap based on script shaping support.
// We also assume a Graphite font knows what it's doing,
// and provides whatever shaping is needed for the
// characters it supports, so only check/clear the
// complex-script ranges for non-Graphite fonts
// for layout support, check for the presence of mort/morx/kerx and/or
// opentype layout tables
bool hasAATLayout = HasFontTable(TRUETYPE_TAG('m', 'o', 'r', 'x')) ||
HasFontTable(TRUETYPE_TAG('m', 'o', 'r', 't'));
bool hasAppleKerning = HasFontTable(TRUETYPE_TAG('k', 'e', 'r', 'x'));
bool hasGSUB = HasFontTable(TRUETYPE_TAG('G', 'S', 'U', 'B'));
bool hasGPOS = HasFontTable(TRUETYPE_TAG('G', 'P', 'O', 'S'));
if ((hasAATLayout && !(hasGSUB || hasGPOS)) || hasAppleKerning) {
mRequiresAAT = true; // prefer CoreText if font has no OTL tables,
// or if it uses the Apple-specific 'kerx'
// variant of kerning table
}
for (const ScriptRange* sr = gfxPlatformFontList::sComplexScriptRanges; sr->rangeStart; sr++) {
// check to see if the cmap includes complex script codepoints
if (charmap->TestRange(sr->rangeStart, sr->rangeEnd)) {
if (hasAATLayout) {
// prefer CoreText for Apple's complex-script fonts,
// even if they also have some OpenType tables
// (e.g. Geeza Pro Bold on 10.6; see bug 614903)
mRequiresAAT = true;
// and don't mask off complex-script ranges, we assume
// the AAT tables will provide the necessary shaping
continue;
}
// We check for GSUB here, as GPOS alone would not be ok.
if (hasGSUB && SupportsScriptInGSUB(sr->tags, sr->numTags)) {
continue;
}
charmap->ClearRange(sr->rangeStart, sr->rangeEnd);
}
}
// Bug 1360309, 1393624: several of Apple's Chinese fonts have spurious
// blank glyphs for obscure Tibetan and Arabic-script codepoints.
// Blacklist these so that font fallback will not use them.
if (mRequiresAAT &&
(FamilyName().EqualsLiteral("Songti SC") || FamilyName().EqualsLiteral("Songti TC") ||
FamilyName().EqualsLiteral("STSong") ||
// Bug 1390980: on 10.11, the Kaiti fonts are also affected.
FamilyName().EqualsLiteral("Kaiti SC") || FamilyName().EqualsLiteral("Kaiti TC") ||
FamilyName().EqualsLiteral("STKaiti"))) {
charmap->ClearRange(0x0f6b, 0x0f70);
charmap->ClearRange(0x0f8c, 0x0f8f);
charmap->clear(0x0f98);
charmap->clear(0x0fbd);
charmap->ClearRange(0x0fcd, 0x0fff);
charmap->clear(0x0620);
charmap->clear(0x065f);
charmap->ClearRange(0x06ee, 0x06ef);
charmap->clear(0x06ff);
}
}
mHasCmapTable = NS_SUCCEEDED(rv);
if (mHasCmapTable) {
gfxPlatformFontList* pfl = gfxPlatformFontList::PlatformFontList();
mCharacterMap = pfl->FindCharMap(charmap);
} else {
// if error occurred, initialize to null cmap
mCharacterMap = new gfxCharacterMap();
}
LOG_FONTLIST(("(fontlist-cmap) name: %s, size: %zu hash: %8.8x%s\n", mName.get(),
charmap->SizeOfIncludingThis(moz_malloc_size_of), charmap->mHash,
mCharacterMap == charmap ? " new" : ""));
if (LOG_CMAPDATA_ENABLED()) {
char prefix[256];
SprintfLiteral(prefix, "(cmapdata) name: %.220s", mName.get());
charmap->Dump(prefix, eGfxLog_cmapdata);
}
return rv;
}
gfxFont* MacOSFontEntry::CreateFontInstance(const gfxFontStyle* aFontStyle) {
RefPtr<UnscaledFontMac> unscaledFont(mUnscaledFont);
if (!unscaledFont) {
CGFontRef baseFont = GetFontRef();
if (!baseFont) {
return nullptr;
}
unscaledFont = new UnscaledFontMac(baseFont, mIsDataUserFont);
mUnscaledFont = unscaledFont;
}
return new gfxMacFont(unscaledFont, this, aFontStyle);
}
bool MacOSFontEntry::HasVariations() {
if (!mHasVariationsInitialized) {
mHasVariationsInitialized = true;
mHasVariations = gfxPlatform::GetPlatform()->HasVariationFontSupport() &&
HasFontTable(TRUETYPE_TAG('f', 'v', 'a', 'r'));
}
return mHasVariations;
}
void MacOSFontEntry::GetVariationAxes(nsTArray<gfxFontVariationAxis>& aVariationAxes) {
MOZ_ASSERT(aVariationAxes.IsEmpty());
CTFontRef ctFont = CTFontCreateWithGraphicsFont(mFontRef, 0.0, nullptr, nullptr);
CFArrayRef axes = CTFontCopyVariationAxes(ctFont);
CFRelease(ctFont);
if (axes) {
for (CFIndex i = 0; i < CFArrayGetCount(axes); ++i) {
gfxFontVariationAxis axis;
auto val = (CFDictionaryRef)CFArrayGetValueAtIndex(axes, i);
auto num = (CFNumberRef)CFDictionaryGetValue(val, kCTFontVariationAxisIdentifierKey);
SInt32 tag = 0;
if (num) {
CFNumberGetValue(num, kCFNumberSInt32Type, &tag);
}
Float32 minValue = 0, maxValue = 0, defaultValue = 0;
num = (CFNumberRef)CFDictionaryGetValue(val, kCTFontVariationAxisMinimumValueKey);
if (num) {
CFNumberGetValue(num, kCFNumberFloat32Type, &minValue);
}
num = (CFNumberRef)CFDictionaryGetValue(val, kCTFontVariationAxisMaximumValueKey);
if (num) {
CFNumberGetValue(num, kCFNumberFloat32Type, &maxValue);
}
num = (CFNumberRef)CFDictionaryGetValue(val, kCTFontVariationAxisDefaultValueKey);
if (num) {
CFNumberGetValue(num, kCFNumberFloat32Type, &defaultValue);
}
auto name = (CFStringRef)CFDictionaryGetValue(val, kCTFontVariationAxisNameKey);
if (name) {
CFIndex len = CFStringGetLength(name);
nsAutoString nameStr;
nameStr.SetLength(len);
CFStringGetCharacters(name, CFRangeMake(0, len), (UniChar*)nameStr.BeginWriting());
AppendUTF16toUTF8(nameStr, axis.mName);
}
axis.mTag = (uint32_t)tag;
axis.mMinValue = minValue;
axis.mMaxValue = maxValue;
axis.mDefaultValue = defaultValue;
aVariationAxes.AppendElement(axis);
}
CFRelease(axes);
}
}
void MacOSFontEntry::GetVariationInstances(nsTArray<gfxFontVariationInstance>& aInstances) {
gfxFontUtils::GetVariationInstances(this, aInstances);
}
bool MacOSFontEntry::IsCFF() {
if (!mIsCFFInitialized) {
mIsCFFInitialized = true;
mIsCFF = HasFontTable(TRUETYPE_TAG('C', 'F', 'F', ' '));
}
return mIsCFF;
}
MacOSFontEntry::MacOSFontEntry(const nsACString& aPostscriptName, WeightRange aWeight,
bool aIsStandardFace, double aSizeHint)
: gfxFontEntry(aPostscriptName, aIsStandardFace),
mFontRef(NULL),
mSizeHint(aSizeHint),
mFontRefInitialized(false),
mRequiresAAT(false),
mIsCFF(false),
mIsCFFInitialized(false),
mHasVariations(false),
mHasVariationsInitialized(false),
mHasAATSmallCaps(false),
mHasAATSmallCapsInitialized(false),
mCheckedForTracking(false),
mCheckedForOpszAxis(false),
mTrakTable(nullptr),
mTrakValues(nullptr),
mTrakSizeTable(nullptr),
mNumTrakSizes(0) {
mWeightRange = aWeight;
}
MacOSFontEntry::MacOSFontEntry(const nsACString& aPostscriptName, CGFontRef aFontRef,
WeightRange aWeight, StretchRange aStretch, SlantStyleRange aStyle,
bool aIsDataUserFont, bool aIsLocalUserFont)
: gfxFontEntry(aPostscriptName, false),
mFontRef(NULL),
mSizeHint(0.0),
mFontRefInitialized(false),
mRequiresAAT(false),
mIsCFF(false),
mIsCFFInitialized(false),
mHasVariations(false),
mHasVariationsInitialized(false),
mHasAATSmallCaps(false),
mHasAATSmallCapsInitialized(false),
mCheckedForTracking(false),
mCheckedForOpszAxis(false),
mTrakTable(nullptr),
mTrakValues(nullptr),
mTrakSizeTable(nullptr),
mNumTrakSizes(0) {
mFontRef = aFontRef;
mFontRefInitialized = true;
::CFRetain(mFontRef);
mWeightRange = aWeight;
mStretchRange = aStretch;
mFixedPitch = false; // xxx - do we need this for downloaded fonts?
mStyleRange = aStyle;
NS_ASSERTION(!(aIsDataUserFont && aIsLocalUserFont),
"userfont is either a data font or a local font");
mIsDataUserFont = aIsDataUserFont;
mIsLocalUserFont = aIsLocalUserFont;
}
gfxFontEntry* MacOSFontEntry::Clone() const {
MOZ_ASSERT(!IsUserFont(), "we can only clone installed fonts!");
MacOSFontEntry* fe = new MacOSFontEntry(Name(), Weight(), mStandardFace, mSizeHint);
fe->mStyleRange = mStyleRange;
fe->mStretchRange = mStretchRange;
fe->mFixedPitch = mFixedPitch;
return fe;
}
CGFontRef MacOSFontEntry::GetFontRef() {
if (!mFontRefInitialized) {
mFontRefInitialized = true;
NSString* psname = GetNSStringForString(NS_ConvertUTF8toUTF16(mName));
mFontRef = ::CGFontCreateWithFontName(CFStringRef(psname));
if (!mFontRef) {
// This happens on macOS 10.12 for font entry names that start with
// .AppleSystemUIFont. For those fonts, we need to go through NSFont
// to get the correct CGFontRef.
// Both the Text and the Display variant of the display font use
// .AppleSystemUIFontSomethingSomething as their member names.
// That's why we're carrying along mSizeHint to this place so that
// we get the variant that we want for this family.
NSFont* font = [NSFont fontWithName:psname size:mSizeHint];
if (font) {
mFontRef = CTFontCopyGraphicsFont((CTFontRef)font, nullptr);
}
}
}
return mFontRef;
}
// For a logging build, we wrap the CFDataRef in a FontTableRec so that we can
// use the MOZ_COUNT_[CD]TOR macros in it. A release build without logging
// does not get this overhead.
class FontTableRec {
public:
explicit FontTableRec(CFDataRef aDataRef) : mDataRef(aDataRef) { MOZ_COUNT_CTOR(FontTableRec); }
~FontTableRec() {
MOZ_COUNT_DTOR(FontTableRec);
::CFRelease(mDataRef);
}
private:
CFDataRef mDataRef;
};
/*static*/ void MacOSFontEntry::DestroyBlobFunc(void* aUserData) {
#ifdef NS_BUILD_REFCNT_LOGGING
FontTableRec* ftr = static_cast<FontTableRec*>(aUserData);
delete ftr;
#else
::CFRelease((CFDataRef)aUserData);
#endif
}
hb_blob_t* MacOSFontEntry::GetFontTable(uint32_t aTag) {
CGFontRef fontRef = GetFontRef();
if (!fontRef) {
return nullptr;
}
CFDataRef dataRef = ::CGFontCopyTableForTag(fontRef, aTag);
if (dataRef) {
return hb_blob_create((const char*)::CFDataGetBytePtr(dataRef), ::CFDataGetLength(dataRef),
HB_MEMORY_MODE_READONLY,
#ifdef NS_BUILD_REFCNT_LOGGING
new FontTableRec(dataRef),
#else
(void*)dataRef,
#endif
DestroyBlobFunc);
}
return nullptr;
}
bool MacOSFontEntry::HasFontTable(uint32_t aTableTag) {
if (mAvailableTables.Count() == 0) {
nsAutoreleasePool localPool;
CGFontRef fontRef = GetFontRef();
if (!fontRef) {
return false;
}
CFArrayRef tags = ::CGFontCopyTableTags(fontRef);
if (!tags) {
return false;
}
int numTags = (int)::CFArrayGetCount(tags);
for (int t = 0; t < numTags; t++) {
uint32_t tag = (uint32_t)(uintptr_t)::CFArrayGetValueAtIndex(tags, t);
mAvailableTables.PutEntry(tag);
}
::CFRelease(tags);
}
return mAvailableTables.GetEntry(aTableTag);
}
typedef struct {
AutoSwap_PRUint32 version;
AutoSwap_PRUint16 format;
AutoSwap_PRUint16 horizOffset;
AutoSwap_PRUint16 vertOffset;
AutoSwap_PRUint16 reserved;
// TrackData horizData;
// TrackData vertData;
} TrakHeader;
typedef struct {
AutoSwap_PRUint16 nTracks;
AutoSwap_PRUint16 nSizes;
AutoSwap_PRUint32 sizeTableOffset;
// trackTableEntry trackTable[];
// fixed32 sizeTable[];
} TrackData;
typedef struct {
AutoSwap_PRUint32 track;
AutoSwap_PRUint16 nameIndex;
AutoSwap_PRUint16 offset;
} TrackTableEntry;
bool MacOSFontEntry::HasTrackingTable() {
if (!mCheckedForTracking) {
mCheckedForTracking = true;
mTrakTable = GetFontTable(TRUETYPE_TAG('t', 'r', 'a', 'k'));
if (mTrakTable) {
if (!ParseTrakTable()) {
hb_blob_destroy(mTrakTable);
mTrakTable = nullptr;
}
}
}
return mTrakTable != nullptr;
}
bool MacOSFontEntry::ParseTrakTable() {
// Check table validity and set up the subtable pointers we need;
// if 'trak' table is invalid, or doesn't contain a 'normal' track,
// return false to tell the caller not to try using it.
unsigned int len;
const char* data = hb_blob_get_data(mTrakTable, &len);
if (len < sizeof(TrakHeader)) {
return false;
}
auto trak = reinterpret_cast<const TrakHeader*>(data);
uint16_t horizOffset = trak->horizOffset;
if (trak->version != 0x00010000 || uint16_t(trak->format) != 0 || horizOffset == 0 ||
uint16_t(trak->reserved) != 0) {
return false;
}
// Find the horizontal trackData, and check it doesn't overrun the buffer.
if (horizOffset > len - sizeof(TrackData)) {
return false;
}
auto trackData = reinterpret_cast<const TrackData*>(data + horizOffset);
uint16_t nTracks = trackData->nTracks;
mNumTrakSizes = trackData->nSizes;
if (nTracks == 0 || mNumTrakSizes < 2) {
return false;
}
uint32_t sizeTableOffset = trackData->sizeTableOffset;
// Find the trackTable, and check it doesn't overrun the buffer.
if (horizOffset > len - (sizeof(TrackData) + nTracks * sizeof(TrackTableEntry))) {
return false;
}
auto trackTable =
reinterpret_cast<const TrackTableEntry*>(data + horizOffset + sizeof(TrackData));
// Look for 'normal' tracking, bail out if no such track is present.
unsigned trackIndex;
for (trackIndex = 0; trackIndex < nTracks; ++trackIndex) {
if (trackTable[trackIndex].track == 0x00000000) {
break;
}
}
if (trackIndex == nTracks) {
return false;
}
// Find list of tracking values, and check they won't overrun.
uint16_t offset = trackTable[trackIndex].offset;
if (offset > len - mNumTrakSizes * sizeof(uint16_t)) {
return false;
}
mTrakValues = reinterpret_cast<const AutoSwap_PRInt16*>(data + offset);
// Find the size subtable, and check it doesn't overrun the buffer.
mTrakSizeTable = reinterpret_cast<const AutoSwap_PRInt32*>(data + sizeTableOffset);
if (mTrakSizeTable + mNumTrakSizes > reinterpret_cast<const AutoSwap_PRInt32*>(data + len)) {
return false;
}
return true;
}
float MacOSFontEntry::TrackingForCSSPx(float aSize) const {
MOZ_ASSERT(mTrakTable && mTrakValues && mTrakSizeTable);
// Find index of first sizeTable entry that is >= the requested size.
Fixed fixedSize = X2Fix(aSize);
unsigned sizeIndex;
for (sizeIndex = 0; sizeIndex < mNumTrakSizes; ++sizeIndex) {
if (mTrakSizeTable[sizeIndex] >= fixedSize) {
break;
}
}
// Return the tracking value for the requested size, or an interpolated
// value if the exact size isn't found.
if (sizeIndex == mNumTrakSizes) {
// Request is larger than last entry in the table, so just use that.
// (We don't attempt to extrapolate more extreme tracking values than
// the largest or smallest present in the table.)
return int16_t(mTrakValues[mNumTrakSizes - 1]);
}
if (sizeIndex == 0 || mTrakSizeTable[sizeIndex] == fixedSize) {
// Found an exact match, or size was smaller than the first entry.
return int16_t(mTrakValues[sizeIndex]);
}
// Requested size falls between two entries: interpolate value.
double s0 = Fix2X(mTrakSizeTable[sizeIndex - 1]);
double s1 = Fix2X(mTrakSizeTable[sizeIndex]);
double t = (aSize - s0) / (s1 - s0);
return (1.0 - t) * int16_t(mTrakValues[sizeIndex - 1]) + t * int16_t(mTrakValues[sizeIndex]);
}
static bool CheckForAATSmallCaps(CFArrayRef aFeatures) {
// Walk the array of feature descriptors from the font, and see whether
// a small-caps feature setting is available.
// Just bail out (returning false) if at any point we fail to find the
// expected dictionary keys, etc; if the font has bad data, we don't even
// try to search the rest of it.
auto numFeatures = CFArrayGetCount(aFeatures);
for (auto f = 0; f < numFeatures; ++f) {
auto featureDict = (CFDictionaryRef)CFArrayGetValueAtIndex(aFeatures, f);
if (!featureDict) {
return false;
}
auto featureNum =
(CFNumberRef)CFDictionaryGetValue(featureDict, CFSTR("CTFeatureTypeIdentifier"));
if (!featureNum) {
return false;
}
int16_t featureType;
if (!CFNumberGetValue(featureNum, kCFNumberSInt16Type, &featureType)) {
return false;
}
if (featureType == kLetterCaseType || featureType == kLowerCaseType) {
// Which selector to look for, depending whether we've found the
// legacy LetterCase feature or the new LowerCase one.
const uint16_t smallCaps =
(featureType == kLetterCaseType) ? kSmallCapsSelector : kLowerCaseSmallCapsSelector;
auto selectors =
(CFArrayRef)CFDictionaryGetValue(featureDict, CFSTR("CTFeatureTypeSelectors"));
if (!selectors) {
return false;
}
auto numSelectors = CFArrayGetCount(selectors);
for (auto s = 0; s < numSelectors; s++) {
auto selectorDict = (CFDictionaryRef)CFArrayGetValueAtIndex(selectors, s);
if (!selectorDict) {
return false;
}
auto selectorNum =
(CFNumberRef)CFDictionaryGetValue(selectorDict, CFSTR("CTFeatureSelectorIdentifier"));
if (!selectorNum) {
return false;
}
int16_t selectorValue;
if (!CFNumberGetValue(selectorNum, kCFNumberSInt16Type, &selectorValue)) {
return false;
}
if (selectorValue == smallCaps) {
return true;
}
}
}
}
return false;
}
bool MacOSFontEntry::SupportsOpenTypeFeature(Script aScript, uint32_t aFeatureTag) {
// If we're going to shape with Core Text, we don't support added
// OpenType features (aside from any CT applies by default), except
// for 'smcp' which we map to an AAT feature selector.
if (RequiresAATLayout()) {
if (aFeatureTag != HB_TAG('s', 'm', 'c', 'p')) {
return false;
}
if (mHasAATSmallCapsInitialized) {
return mHasAATSmallCaps;
}
mHasAATSmallCapsInitialized = true;
CTFontRef ctFont = CTFontCreateWithGraphicsFont(mFontRef, 0.0, nullptr, nullptr);
if (ctFont) {
CFArrayRef features = CTFontCopyFeatures(ctFont);
CFRelease(ctFont);
if (features) {
mHasAATSmallCaps = CheckForAATSmallCaps(features);
CFRelease(features);
}
}
return mHasAATSmallCaps;
}
return gfxFontEntry::SupportsOpenTypeFeature(aScript, aFeatureTag);
}
void MacOSFontEntry::AddSizeOfIncludingThis(MallocSizeOf aMallocSizeOf,
FontListSizes* aSizes) const {
aSizes->mFontListSize += aMallocSizeOf(this);
AddSizeOfExcludingThis(aMallocSizeOf, aSizes);
}
/* gfxMacFontFamily */
#pragma mark -
class gfxMacFontFamily : public gfxFontFamily {
public:
explicit gfxMacFontFamily(const nsACString& aName, double aSizeHint)
: gfxFontFamily(aName), mSizeHint(aSizeHint) {}
virtual ~gfxMacFontFamily() {}
virtual void LocalizedName(nsACString& aLocalizedName);
virtual void FindStyleVariations(FontInfoData* aFontInfoData = nullptr);
virtual bool IsSingleFaceFamily() const { return false; }
protected:
double mSizeHint;
};
void gfxMacFontFamily::LocalizedName(nsACString& aLocalizedName) {
nsAutoreleasePool localPool;
// It's unsafe to call HasOtherFamilyNames off the main thread because
// it entrains FindStyleVariations, which calls GetWeightOverride, which
// retrieves prefs. And the pref names can change (via user overrides),
// so we can't use gfxPrefs to access them.
if (NS_IsMainThread() && !HasOtherFamilyNames()) {
aLocalizedName = mName;
return;
}
NSString* family = GetNSStringForString(NS_ConvertUTF8toUTF16(mName));
NSString* localized = [sFontManager localizedNameForFamily:family face:nil];
if (localized) {
nsAutoString locName;
GetStringForNSString(localized, locName);
CopyUTF16toUTF8(locName, aLocalizedName);
return;
}
// failed to get localized name, just use the canonical one
aLocalizedName = mName;
}
// Return the CSS weight value to use for the given face, overriding what
// AppKit gives us (used to adjust families with bad weight values, see
// bug 931426).
// A return value of 0 indicates no override - use the existing weight.
static inline int GetWeightOverride(const nsAString& aPSName) {
nsAutoCString prefName("font.weight-override.");
// The PostScript name is required to be ASCII; if it's not, the font is
// broken anyway, so we really don't care that this is lossy.
LossyAppendUTF16toASCII(aPSName, prefName);
return Preferences::GetInt(prefName.get(), 0);
}
void gfxMacFontFamily::FindStyleVariations(FontInfoData* aFontInfoData) {
if (mHasStyles) return;
AUTO_PROFILER_LABEL_DYNAMIC_NSCSTRING("gfxMacFontFamily::FindStyleVariations", LAYOUT, mName);
nsAutoreleasePool localPool;
NSString* family = GetNSStringForString(NS_ConvertUTF8toUTF16(mName));
// create a font entry for each face
NSArray* fontfaces = [sFontManager
availableMembersOfFontFamily:family]; // returns an array of [psname, style name, weight,
// traits] elements, goofy api
int faceCount = [fontfaces count];
int faceIndex;
for (faceIndex = 0; faceIndex < faceCount; faceIndex++) {
NSArray* face = [fontfaces objectAtIndex:faceIndex];
NSString* psname = [face objectAtIndex:INDEX_FONT_POSTSCRIPT_NAME];
int32_t appKitWeight = [[face objectAtIndex:INDEX_FONT_WEIGHT] unsignedIntValue];
uint32_t macTraits = [[face objectAtIndex:INDEX_FONT_TRAITS] unsignedIntValue];
NSString* facename = [face objectAtIndex:INDEX_FONT_FACE_NAME];
bool isStandardFace = false;
if (appKitWeight == kAppleExtraLightWeight) {
// if the facename contains UltraLight, set the weight to the ultralight weight value
NSRange range = [facename rangeOfString:@"ultralight" options:NSCaseInsensitiveSearch];
if (range.location != NSNotFound) {
appKitWeight = kAppleUltraLightWeight;
}
}
// make a nsString
nsAutoString postscriptFontName;
GetStringForNSString(psname, postscriptFontName);
int32_t cssWeight = GetWeightOverride(postscriptFontName);
if (cssWeight) {
// scale down and clamp, to get a value from 1..9
cssWeight = ((cssWeight + 50) / 100);
cssWeight = std::max(1, std::min(cssWeight, 9));
} else {
cssWeight = gfxMacPlatformFontList::AppleWeightToCSSWeight(appKitWeight);
}
cssWeight *= 100; // scale up to CSS values
if ([facename isEqualToString:@"Regular"] || [facename isEqualToString:@"Bold"] ||
[facename isEqualToString:@"Italic"] || [facename isEqualToString:@"Oblique"] ||
[facename isEqualToString:@"Bold Italic"] || [facename isEqualToString:@"Bold Oblique"]) {
isStandardFace = true;
}
// create a font entry
MacOSFontEntry* fontEntry =
new MacOSFontEntry(NS_ConvertUTF16toUTF8(postscriptFontName),
WeightRange(FontWeight(cssWeight)), isStandardFace, mSizeHint);
if (!fontEntry) {
break;
}
// set additional properties based on the traits reported by Cocoa
if (macTraits & (NSCondensedFontMask | NSNarrowFontMask | NSCompressedFontMask)) {
fontEntry->mStretchRange = StretchRange(FontStretch::Condensed());
} else if (macTraits & NSExpandedFontMask) {
fontEntry->mStretchRange = StretchRange(FontStretch::Expanded());
}
// Cocoa fails to set the Italic traits bit for HelveticaLightItalic,
// at least (see bug 611855), so check for style name endings as well
if ((macTraits & NSItalicFontMask) || [facename hasSuffix:@"Italic"] ||
[facename hasSuffix:@"Oblique"]) {
fontEntry->mStyleRange = SlantStyleRange(FontSlantStyle::Italic());
}
if (macTraits & NSFixedPitchFontMask) {
fontEntry->mFixedPitch = true;
}
if (gfxPlatform::GetPlatform()->HasVariationFontSupport()) {
fontEntry->SetupVariationRanges();
}
if (LOG_FONTLIST_ENABLED()) {
nsAutoCString weightString;
fontEntry->Weight().ToString(weightString);
nsAutoCString stretchString;
fontEntry->Stretch().ToString(stretchString);
LOG_FONTLIST(("(fontlist) added (%s) to family (%s)"
" with style: %s weight: %s stretch: %s"
" (apple-weight: %d macTraits: %8.8x)",
fontEntry->Name().get(), Name().get(),
fontEntry->IsItalic() ? "italic" : "normal", weightString.get(),
stretchString.get(), appKitWeight, macTraits));
}
// insert into font entry array of family
AddFontEntry(fontEntry);
}
SortAvailableFonts();
SetHasStyles(true);
if (mIsBadUnderlineFamily) {
SetBadUnderlineFonts();
}
}
/* gfxSingleFaceMacFontFamily */
#pragma mark -
class gfxSingleFaceMacFontFamily : public gfxFontFamily {
public:
explicit gfxSingleFaceMacFontFamily(const nsACString& aName) : gfxFontFamily(aName) {
mFaceNamesInitialized = true; // omit from face name lists
}
virtual ~gfxSingleFaceMacFontFamily() {}
virtual void LocalizedName(nsACString& aLocalizedName);
virtual void ReadOtherFamilyNames(gfxPlatformFontList* aPlatformFontList);
virtual bool IsSingleFaceFamily() const { return true; }
};
void gfxSingleFaceMacFontFamily::LocalizedName(nsACString& aLocalizedName) {
nsAutoreleasePool localPool;
if (!HasOtherFamilyNames()) {
aLocalizedName = mName;
return;
}
gfxFontEntry* fe = mAvailableFonts[0];
NSFont* font = [NSFont fontWithName:GetNSStringForString(NS_ConvertUTF8toUTF16(fe->Name()))
size:0.0];
if (font) {
NSString* localized = [font displayName];
if (localized) {
nsAutoString locName;
GetStringForNSString(localized, locName);
CopyUTF16toUTF8(locName, aLocalizedName);
return;
}
}
// failed to get localized name, just use the canonical one
aLocalizedName = mName;
}
void gfxSingleFaceMacFontFamily::ReadOtherFamilyNames(gfxPlatformFontList* aPlatformFontList) {
if (mOtherFamilyNamesInitialized) {
return;
}
gfxFontEntry* fe = mAvailableFonts[0];
if (!fe) {
return;
}
const uint32_t kNAME = TRUETYPE_TAG('n', 'a', 'm', 'e');
gfxFontEntry::AutoTable nameTable(fe, kNAME);
if (!nameTable) {
return;
}
mHasOtherFamilyNames = ReadOtherFamilyNamesForFace(aPlatformFontList, nameTable, true);
mOtherFamilyNamesInitialized = true;
}
/* gfxMacPlatformFontList */
#pragma mark -
// A bunch of fonts for "additional language support" are shipped in a
// "Language Support" directory, and don't show up in the standard font
// list returned by CTFontManagerCopyAvailableFontFamilyNames unless
// we explicitly activate them.
#define LANG_FONTS_DIR "/Library/Application Support/Apple/Fonts/Language Support"
gfxMacPlatformFontList::gfxMacPlatformFontList()
: gfxPlatformFontList(false), mDefaultFont(nullptr), mUseSizeSensitiveSystemFont(false) {
#ifdef MOZ_BUNDLED_FONTS
ActivateBundledFonts();
#endif
nsresult rv;
nsCOMPtr<nsIFile> langFonts(do_CreateInstance(NS_LOCAL_FILE_CONTRACTID, &rv));
if (NS_SUCCEEDED(rv)) {
rv = langFonts->InitWithNativePath(NS_LITERAL_CSTRING(LANG_FONTS_DIR));
if (NS_SUCCEEDED(rv)) {
ActivateFontsFromDir(langFonts);
}
}
// Only the parent process listens for OS font-changed notifications;
// after rebuilding its list, it will update the content processes.
if (XRE_IsParentProcess()) {
::CFNotificationCenterAddObserver(::CFNotificationCenterGetLocalCenter(), this,
RegisteredFontsChangedNotificationCallback,
kCTFontManagerRegisteredFontsChangedNotification, 0,
CFNotificationSuspensionBehaviorDeliverImmediately);
}
// cache this in a static variable so that MacOSFontFamily objects
// don't have to repeatedly look it up
sFontManager = [NSFontManager sharedFontManager];
}
gfxMacPlatformFontList::~gfxMacPlatformFontList() {
if (XRE_IsParentProcess()) {
::CFNotificationCenterRemoveObserver(::CFNotificationCenterGetLocalCenter(), this,
kCTFontManagerRegisteredFontsChangedNotification, 0);
}
if (mDefaultFont) {
::CFRelease(mDefaultFont);
}
}
void gfxMacPlatformFontList::AddFamily(const nsACString& aFamilyName, bool aSystemFont) {
FontFamilyTable& table = aSystemFont ? mSystemFontFamilies : mFontFamilies;
double sizeHint = 0.0;
if (aSystemFont && mUseSizeSensitiveSystemFont &&
mSystemDisplayFontFamilyName.Equals(aFamilyName)) {
sizeHint = 128.0;
}
nsAutoCString key;
ToLowerCase(aFamilyName, key);
RefPtr<gfxFontFamily> familyEntry = new gfxMacFontFamily(aFamilyName, sizeHint);
table.Put(key, familyEntry);
// check the bad underline blacklist
if (mBadUnderlineFamilyNames.ContainsSorted(key)) {