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gfxDWriteFontList.cpp
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gfxDWriteFontList.cpp
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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 "mozilla/ArrayUtils.h"
#include "mozilla/FontPropertyTypes.h"
#include "mozilla/MemoryReporting.h"
#include "mozilla/intl/OSPreferences.h"
#include "gfxDWriteFontList.h"
#include "gfxDWriteFonts.h"
#include "nsUnicharUtils.h"
#include "nsServiceManagerUtils.h"
#include "nsCharSeparatedTokenizer.h"
#include "mozilla/Preferences.h"
#include "mozilla/Sprintf.h"
#include "mozilla/Telemetry.h"
#include "nsDirectoryServiceUtils.h"
#include "nsDirectoryServiceDefs.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsISimpleEnumerator.h"
#include "gfxGDIFontList.h"
#include "nsIWindowsRegKey.h"
#include "harfbuzz/hb.h"
using namespace mozilla;
using namespace mozilla::gfx;
using mozilla::intl::OSPreferences;
#define LOG_FONTLIST(args) \
MOZ_LOG(gfxPlatform::GetLog(eGfxLog_fontlist), LogLevel::Debug, args)
#define LOG_FONTLIST_ENABLED() \
MOZ_LOG_TEST(gfxPlatform::GetLog(eGfxLog_fontlist), LogLevel::Debug)
#define LOG_FONTINIT(args) \
MOZ_LOG(gfxPlatform::GetLog(eGfxLog_fontinit), LogLevel::Debug, args)
#define LOG_FONTINIT_ENABLED() \
MOZ_LOG_TEST(gfxPlatform::GetLog(eGfxLog_fontinit), LogLevel::Debug)
#define LOG_CMAPDATA_ENABLED() \
MOZ_LOG_TEST(gfxPlatform::GetLog(eGfxLog_cmapdata), LogLevel::Debug)
static __inline void BuildKeyNameFromFontName(nsACString& aName) {
ToLowerCase(aName);
}
////////////////////////////////////////////////////////////////////////////////
// gfxDWriteFontFamily
gfxDWriteFontFamily::~gfxDWriteFontFamily() {}
static bool GetEnglishOrFirstName(nsACString& aName,
IDWriteLocalizedStrings* aStrings) {
UINT32 englishIdx = 0;
BOOL exists;
HRESULT hr = aStrings->FindLocaleName(L"en-us", &englishIdx, &exists);
if (FAILED(hr)) {
return false;
}
if (!exists) {
// Use 0 index if english is not found.
englishIdx = 0;
}
AutoTArray<WCHAR, 32> enName;
UINT32 length;
hr = aStrings->GetStringLength(englishIdx, &length);
if (FAILED(hr)) {
return false;
}
if (!enName.SetLength(length + 1, fallible)) {
// Eeep - running out of memory. Unlikely to end well.
return false;
}
hr = aStrings->GetString(englishIdx, enName.Elements(), length + 1);
if (FAILED(hr)) {
return false;
}
aName.Append(NS_ConvertUTF16toUTF8((const char16_t*)enName.Elements(),
enName.Length() - 1));
return true;
}
static HRESULT GetDirectWriteFontName(IDWriteFont* aFont,
nsACString& aFontName) {
HRESULT hr;
RefPtr<IDWriteLocalizedStrings> names;
hr = aFont->GetFaceNames(getter_AddRefs(names));
if (FAILED(hr)) {
return hr;
}
if (!GetEnglishOrFirstName(aFontName, names)) {
return E_FAIL;
}
return S_OK;
}
#define FULLNAME_ID DWRITE_INFORMATIONAL_STRING_FULL_NAME
#define PSNAME_ID DWRITE_INFORMATIONAL_STRING_POSTSCRIPT_NAME
// for use in reading postscript or fullname
static HRESULT GetDirectWriteFaceName(IDWriteFont* aFont,
DWRITE_INFORMATIONAL_STRING_ID aWhichName,
nsACString& aFontName) {
HRESULT hr;
BOOL exists;
RefPtr<IDWriteLocalizedStrings> infostrings;
hr = aFont->GetInformationalStrings(aWhichName, getter_AddRefs(infostrings),
&exists);
if (FAILED(hr) || !exists) {
return E_FAIL;
}
if (!GetEnglishOrFirstName(aFontName, infostrings)) {
return E_FAIL;
}
return S_OK;
}
void gfxDWriteFontFamily::FindStyleVariations(FontInfoData* aFontInfoData) {
HRESULT hr;
if (mHasStyles) {
return;
}
mHasStyles = true;
gfxPlatformFontList* fp = gfxPlatformFontList::PlatformFontList();
bool skipFaceNames =
mFaceNamesInitialized || !fp->NeedFullnamePostscriptNames();
bool fontInfoShouldHaveFaceNames = !mFaceNamesInitialized &&
fp->NeedFullnamePostscriptNames() &&
aFontInfoData;
for (UINT32 i = 0; i < mDWFamily->GetFontCount(); i++) {
RefPtr<IDWriteFont> font;
hr = mDWFamily->GetFont(i, getter_AddRefs(font));
if (FAILED(hr)) {
// This should never happen.
NS_WARNING("Failed to get existing font from family.");
continue;
}
if (font->GetSimulations() != DWRITE_FONT_SIMULATIONS_NONE) {
// We don't want these in the font list; we'll apply simulations
// on the fly when appropriate.
continue;
}
// name
nsCString fullID(mName);
nsAutoCString faceName;
hr = GetDirectWriteFontName(font, faceName);
if (FAILED(hr)) {
continue;
}
fullID.Append(' ');
fullID.Append(faceName);
// Ignore italic style's "Meiryo" because "Meiryo (Bold) Italic" has
// non-italic style glyphs as Japanese characters. However, using it
// causes serious problem if web pages wants some elements to be
// different style from others only with font-style. For example,
// <em> and <i> should be rendered as italic in the default style.
if (fullID.EqualsLiteral("Meiryo Italic") ||
fullID.EqualsLiteral("Meiryo Bold Italic")) {
continue;
}
gfxDWriteFontEntry* fe =
new gfxDWriteFontEntry(fullID, font, mIsSystemFontFamily);
fe->SetForceGDIClassic(mForceGDIClassic);
fe->SetupVariationRanges();
AddFontEntry(fe);
// postscript/fullname if needed
nsAutoCString psname, fullname;
if (fontInfoShouldHaveFaceNames) {
aFontInfoData->GetFaceNames(fe->Name(), fullname, psname);
if (!fullname.IsEmpty()) {
fp->AddFullname(fe, fullname);
}
if (!psname.IsEmpty()) {
fp->AddPostscriptName(fe, psname);
}
} else if (!skipFaceNames) {
hr = GetDirectWriteFaceName(font, PSNAME_ID, psname);
if (FAILED(hr)) {
skipFaceNames = true;
} else if (psname.Length() > 0) {
fp->AddPostscriptName(fe, psname);
}
hr = GetDirectWriteFaceName(font, FULLNAME_ID, fullname);
if (FAILED(hr)) {
skipFaceNames = true;
} else if (fullname.Length() > 0) {
fp->AddFullname(fe, fullname);
}
}
if (LOG_FONTLIST_ENABLED()) {
nsAutoCString weightString;
fe->Weight().ToString(weightString);
LOG_FONTLIST(
("(fontlist) added (%s) to family (%s)"
" with style: %s weight: %s stretch: %d psname: %s fullname: %s",
fe->Name().get(), Name().get(),
(fe->IsItalic()) ? "italic"
: (fe->IsOblique() ? "oblique" : "normal"),
weightString.get(), fe->Stretch(), psname.get(), fullname.get()));
}
}
// assume that if no error, all postscript/fullnames were initialized
if (!skipFaceNames) {
mFaceNamesInitialized = true;
}
if (!mAvailableFonts.Length()) {
NS_WARNING("Family with no font faces in it.");
}
if (mIsBadUnderlineFamily) {
SetBadUnderlineFonts();
}
}
void gfxDWriteFontFamily::ReadFaceNames(gfxPlatformFontList* aPlatformFontList,
bool aNeedFullnamePostscriptNames,
FontInfoData* aFontInfoData) {
// if all needed names have already been read, skip
if (mOtherFamilyNamesInitialized &&
(mFaceNamesInitialized || !aNeedFullnamePostscriptNames)) {
return;
}
// If we've been passed a FontInfoData, we skip the DWrite implementation
// here and fall back to the generic code which will use that info.
if (!aFontInfoData) {
// DirectWrite version of this will try to read
// postscript/fullnames via DirectWrite API
FindStyleVariations();
}
// fallback to looking up via name table
if (!mOtherFamilyNamesInitialized || !mFaceNamesInitialized) {
gfxFontFamily::ReadFaceNames(aPlatformFontList,
aNeedFullnamePostscriptNames, aFontInfoData);
}
}
void gfxDWriteFontFamily::LocalizedName(nsACString& aLocalizedName) {
aLocalizedName = Name(); // just return canonical name in case of failure
if (!mDWFamily) {
return;
}
HRESULT hr;
nsAutoCString locale;
// We use system locale here because it's what user expects to see.
// See bug 1349454 for details.
OSPreferences::GetInstance()->GetSystemLocale(locale);
RefPtr<IDWriteLocalizedStrings> names;
hr = mDWFamily->GetFamilyNames(getter_AddRefs(names));
if (FAILED(hr)) {
return;
}
UINT32 idx = 0;
BOOL exists;
hr =
names->FindLocaleName(NS_ConvertUTF8toUTF16(locale).get(), &idx, &exists);
if (FAILED(hr)) {
return;
}
if (!exists) {
// Use english is localized is not found.
hr = names->FindLocaleName(L"en-us", &idx, &exists);
if (FAILED(hr)) {
return;
}
if (!exists) {
// Use 0 index if english is not found.
idx = 0;
}
}
AutoTArray<WCHAR, 32> famName;
UINT32 length;
hr = names->GetStringLength(idx, &length);
if (FAILED(hr)) {
return;
}
if (!famName.SetLength(length + 1, fallible)) {
// Eeep - running out of memory. Unlikely to end well.
return;
}
hr = names->GetString(idx, famName.Elements(), length + 1);
if (FAILED(hr)) {
return;
}
aLocalizedName = NS_ConvertUTF16toUTF8((const char16_t*)famName.Elements(),
famName.Length() - 1);
}
bool gfxDWriteFontFamily::IsSymbolFontFamily() const {
// Just check the first font in the family
if (mDWFamily->GetFontCount() > 0) {
RefPtr<IDWriteFont> font;
if (SUCCEEDED(mDWFamily->GetFont(0, getter_AddRefs(font)))) {
return font->IsSymbolFont();
}
}
return false;
}
void gfxDWriteFontFamily::AddSizeOfExcludingThis(MallocSizeOf aMallocSizeOf,
FontListSizes* aSizes) const {
gfxFontFamily::AddSizeOfExcludingThis(aMallocSizeOf, aSizes);
// TODO:
// This doesn't currently account for |mDWFamily|
}
void gfxDWriteFontFamily::AddSizeOfIncludingThis(MallocSizeOf aMallocSizeOf,
FontListSizes* aSizes) const {
aSizes->mFontListSize += aMallocSizeOf(this);
AddSizeOfExcludingThis(aMallocSizeOf, aSizes);
}
////////////////////////////////////////////////////////////////////////////////
// gfxDWriteFontEntry
gfxFontEntry* gfxDWriteFontEntry::Clone() const {
MOZ_ASSERT(!IsUserFont(), "we can only clone installed fonts!");
gfxDWriteFontEntry* fe = new gfxDWriteFontEntry(Name(), mFont);
fe->mWeightRange = mWeightRange;
fe->mStretchRange = mStretchRange;
fe->mStyleRange = mStyleRange;
return fe;
}
gfxDWriteFontEntry::~gfxDWriteFontEntry() {}
static bool UsingArabicOrHebrewScriptSystemLocale() {
LANGID langid = PRIMARYLANGID(::GetSystemDefaultLangID());
switch (langid) {
case LANG_ARABIC:
case LANG_DARI:
case LANG_PASHTO:
case LANG_PERSIAN:
case LANG_SINDHI:
case LANG_UIGHUR:
case LANG_URDU:
case LANG_HEBREW:
return true;
default:
return false;
}
}
nsresult gfxDWriteFontEntry::CopyFontTable(uint32_t aTableTag,
nsTArray<uint8_t>& aBuffer) {
gfxDWriteFontList* pFontList = gfxDWriteFontList::PlatformFontList();
const uint32_t tagBE = NativeEndian::swapToBigEndian(aTableTag);
// Don't use GDI table loading for symbol fonts or for
// italic fonts in Arabic-script system locales because of
// potential cmap discrepancies, see bug 629386.
// Ditto for Hebrew, bug 837498.
if (mFont && pFontList->UseGDIFontTableAccess() &&
!(!IsUpright() && UsingArabicOrHebrewScriptSystemLocale()) &&
!mFont->IsSymbolFont()) {
LOGFONTW logfont = {0};
if (InitLogFont(mFont, &logfont)) {
AutoDC dc;
AutoSelectFont font(dc.GetDC(), &logfont);
if (font.IsValid()) {
uint32_t tableSize = ::GetFontData(dc.GetDC(), tagBE, 0, nullptr, 0);
if (tableSize != GDI_ERROR) {
if (aBuffer.SetLength(tableSize, fallible)) {
::GetFontData(dc.GetDC(), tagBE, 0, aBuffer.Elements(),
aBuffer.Length());
return NS_OK;
}
return NS_ERROR_OUT_OF_MEMORY;
}
}
}
}
RefPtr<IDWriteFontFace> fontFace;
nsresult rv = CreateFontFace(getter_AddRefs(fontFace));
if (NS_FAILED(rv)) {
return rv;
}
uint8_t* tableData;
uint32_t len;
void* tableContext = nullptr;
BOOL exists;
HRESULT hr = fontFace->TryGetFontTable(tagBE, (const void**)&tableData, &len,
&tableContext, &exists);
if (FAILED(hr) || !exists) {
return NS_ERROR_FAILURE;
}
if (aBuffer.SetLength(len, fallible)) {
memcpy(aBuffer.Elements(), tableData, len);
rv = NS_OK;
} else {
rv = NS_ERROR_OUT_OF_MEMORY;
}
if (tableContext) {
fontFace->ReleaseFontTable(&tableContext);
}
return rv;
}
// Access to font tables packaged in hb_blob_t form
// object attached to the Harfbuzz blob, used to release
// the table when the blob is destroyed
class FontTableRec {
public:
FontTableRec(IDWriteFontFace* aFontFace, void* aContext)
: mFontFace(aFontFace), mContext(aContext) {
MOZ_COUNT_CTOR(FontTableRec);
}
~FontTableRec() {
MOZ_COUNT_DTOR(FontTableRec);
mFontFace->ReleaseFontTable(mContext);
}
private:
RefPtr<IDWriteFontFace> mFontFace;
void* mContext;
};
static void DestroyBlobFunc(void* aUserData) {
FontTableRec* ftr = static_cast<FontTableRec*>(aUserData);
delete ftr;
}
hb_blob_t* gfxDWriteFontEntry::GetFontTable(uint32_t aTag) {
// try to avoid potentially expensive DWrite call if we haven't actually
// created the font face yet, by using the gfxFontEntry method that will
// use CopyFontTable and then cache the data
if (!mFontFace) {
return gfxFontEntry::GetFontTable(aTag);
}
const void* data;
UINT32 size;
void* context;
BOOL exists;
HRESULT hr = mFontFace->TryGetFontTable(NativeEndian::swapToBigEndian(aTag),
&data, &size, &context, &exists);
if (SUCCEEDED(hr) && exists) {
FontTableRec* ftr = new FontTableRec(mFontFace, context);
return hb_blob_create(static_cast<const char*>(data), size,
HB_MEMORY_MODE_READONLY, ftr, DestroyBlobFunc);
}
return nullptr;
}
nsresult gfxDWriteFontEntry::ReadCMAP(FontInfoData* aFontInfoData) {
AUTO_PROFILER_LABEL("gfxDWriteFontEntry::ReadCMAP", GRAPHICS);
// attempt this once, if errors occur leave a blank cmap
if (mCharacterMap || mShmemCharacterMap) {
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;
}
}
mHasCmapTable = NS_SUCCEEDED(rv);
if (mHasCmapTable) {
// Bug 969504: exclude U+25B6 from Segoe UI family, because it's used
// by sites to represent a "Play" icon, but the glyph in Segoe UI Light
// and Semibold on Windows 7 is too thin. (Ditto for leftward U+25C0.)
// Fallback to Segoe UI Symbol is preferred.
if (FamilyName().EqualsLiteral("Segoe UI")) {
charmap->clear(0x25b6);
charmap->clear(0x25c0);
}
gfxPlatformFontList* pfl = gfxPlatformFontList::PlatformFontList();
fontlist::FontList* sharedFontList = pfl->SharedFontList();
if (!IsUserFont() && mShmemFace) {
mShmemFace->SetCharacterMap(sharedFontList, charmap); // async
if (!TrySetShmemCharacterMap()) {
// Temporarily retain charmap, until the shared version is
// ready for use.
mCharacterMap = charmap;
}
} else {
mCharacterMap = pfl->FindCharMap(charmap);
}
} else {
// if error occurred, initialize to null cmap
mCharacterMap = new gfxCharacterMap();
}
LOG_FONTLIST(("(fontlist-cmap) name: %s, size: %d 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;
}
bool gfxDWriteFontEntry::HasVariations() {
if (mHasVariationsInitialized) {
return mHasVariations;
}
mHasVariationsInitialized = true;
if (!mFontFace) {
// CreateFontFace will initialize the mFontFace field, and also
// mFontFace5 if available on the current DWrite version.
RefPtr<IDWriteFontFace> fontFace;
if (NS_FAILED(CreateFontFace(getter_AddRefs(fontFace)))) {
return false;
}
}
if (mFontFace5) {
mHasVariations = mFontFace5->HasVariations();
}
return mHasVariations;
}
void gfxDWriteFontEntry::GetVariationAxes(
nsTArray<gfxFontVariationAxis>& aAxes) {
if (!HasVariations()) {
return;
}
// HasVariations() will have ensured the mFontFace5 interface is available;
// so we can get an IDWriteFontResource and ask it for the axis info.
RefPtr<IDWriteFontResource> resource;
HRESULT hr = mFontFace5->GetFontResource(getter_AddRefs(resource));
if (FAILED(hr) || !resource) {
return;
}
uint32_t count = resource->GetFontAxisCount();
AutoTArray<DWRITE_FONT_AXIS_VALUE, 4> defaultValues;
AutoTArray<DWRITE_FONT_AXIS_RANGE, 4> ranges;
defaultValues.SetLength(count);
ranges.SetLength(count);
resource->GetDefaultFontAxisValues(defaultValues.Elements(), count);
resource->GetFontAxisRanges(ranges.Elements(), count);
for (uint32_t i = 0; i < count; ++i) {
gfxFontVariationAxis axis;
MOZ_ASSERT(ranges[i].axisTag == defaultValues[i].axisTag);
DWRITE_FONT_AXIS_ATTRIBUTES attrs = resource->GetFontAxisAttributes(i);
if (attrs & DWRITE_FONT_AXIS_ATTRIBUTES_HIDDEN) {
continue;
}
if (!(attrs & DWRITE_FONT_AXIS_ATTRIBUTES_VARIABLE)) {
continue;
}
// Extract the 4 chars of the tag from DWrite's packed version,
// and reassemble them in the order we use for TRUETYPE_TAG.
uint32_t t = defaultValues[i].axisTag;
axis.mTag = TRUETYPE_TAG(t & 0xff, (t >> 8) & 0xff, (t >> 16) & 0xff,
(t >> 24) & 0xff);
// Try to get a human-friendly name (may not be present)
RefPtr<IDWriteLocalizedStrings> names;
resource->GetAxisNames(i, getter_AddRefs(names));
if (names) {
GetEnglishOrFirstName(axis.mName, names);
}
axis.mMinValue = ranges[i].minValue;
axis.mMaxValue = ranges[i].maxValue;
axis.mDefaultValue = defaultValues[i].value;
aAxes.AppendElement(axis);
}
}
void gfxDWriteFontEntry::GetVariationInstances(
nsTArray<gfxFontVariationInstance>& aInstances) {
gfxFontUtils::GetVariationInstances(this, aInstances);
}
gfxFont* gfxDWriteFontEntry::CreateFontInstance(
const gfxFontStyle* aFontStyle) {
bool needsBold = aFontStyle->NeedsSyntheticBold(this);
DWRITE_FONT_SIMULATIONS sims =
needsBold ? DWRITE_FONT_SIMULATIONS_BOLD : DWRITE_FONT_SIMULATIONS_NONE;
ThreadSafeWeakPtr<UnscaledFontDWrite>& unscaledFontPtr =
needsBold ? mUnscaledFontBold : mUnscaledFont;
RefPtr<UnscaledFontDWrite> unscaledFont(unscaledFontPtr);
if (!unscaledFont) {
RefPtr<IDWriteFontFace> fontFace;
nsresult rv = CreateFontFace(getter_AddRefs(fontFace), aFontStyle, sims);
if (NS_FAILED(rv)) {
return nullptr;
}
unscaledFont =
new UnscaledFontDWrite(fontFace, mIsSystemFont ? mFont : nullptr, sims);
unscaledFontPtr = unscaledFont;
}
RefPtr<IDWriteFontFace> fontFace;
if (HasVariations() && !aFontStyle->variationSettings.IsEmpty()) {
nsresult rv = CreateFontFace(getter_AddRefs(fontFace), aFontStyle, sims);
if (NS_FAILED(rv)) {
return nullptr;
}
}
return new gfxDWriteFont(unscaledFont, this, aFontStyle, fontFace);
}
nsresult gfxDWriteFontEntry::CreateFontFace(
IDWriteFontFace** aFontFace, const gfxFontStyle* aFontStyle,
DWRITE_FONT_SIMULATIONS aSimulations) {
// Convert an OpenType font tag from our uint32_t representation
// (as constructed by TRUETYPE_TAG(...)) to the order DWrite wants.
auto makeDWriteAxisTag = [](uint32_t aTag) {
return DWRITE_MAKE_FONT_AXIS_TAG((aTag >> 24) & 0xff, (aTag >> 16) & 0xff,
(aTag >> 8) & 0xff, aTag & 0xff);
};
// initialize mFontFace if this hasn't been done before
if (!mFontFace) {
HRESULT hr;
if (mFont) {
hr = mFont->CreateFontFace(getter_AddRefs(mFontFace));
} else if (mFontFile) {
IDWriteFontFile* fontFile = mFontFile.get();
hr = Factory::GetDWriteFactory()->CreateFontFace(
mFaceType, 1, &fontFile, 0, DWRITE_FONT_SIMULATIONS_NONE,
getter_AddRefs(mFontFace));
} else {
MOZ_ASSERT_UNREACHABLE("invalid font entry");
return NS_ERROR_FAILURE;
}
if (FAILED(hr)) {
return NS_ERROR_FAILURE;
}
// Also get the IDWriteFontFace5 interface if we're running on a
// sufficiently new DWrite version where it is available.
if (mFontFace) {
mFontFace->QueryInterface(__uuidof(IDWriteFontFace5),
(void**)getter_AddRefs(mFontFace5));
if (!mVariationSettings.IsEmpty()) {
// If the font entry has variations specified, mFontFace5 will
// be a distinct face that has the variations applied.
RefPtr<IDWriteFontResource> resource;
HRESULT hr = mFontFace5->GetFontResource(getter_AddRefs(resource));
if (SUCCEEDED(hr) && resource) {
AutoTArray<DWRITE_FONT_AXIS_VALUE, 4> fontAxisValues;
for (const auto& v : mVariationSettings) {
DWRITE_FONT_AXIS_VALUE axisValue = {makeDWriteAxisTag(v.mTag),
v.mValue};
fontAxisValues.AppendElement(axisValue);
}
resource->CreateFontFace(
mFontFace->GetSimulations(), fontAxisValues.Elements(),
fontAxisValues.Length(), getter_AddRefs(mFontFace5));
}
}
}
}
// Do we need to modify DWrite simulations from what mFontFace has?
bool needSimulations =
(aSimulations & DWRITE_FONT_SIMULATIONS_BOLD) &&
!(mFontFace->GetSimulations() & DWRITE_FONT_SIMULATIONS_BOLD);
// If the IDWriteFontFace5 interface is available, we can try using
// IDWriteFontResource to create a new modified face.
if (mFontFace5 && (HasVariations() || needSimulations)) {
RefPtr<IDWriteFontResource> resource;
HRESULT hr = mFontFace5->GetFontResource(getter_AddRefs(resource));
if (SUCCEEDED(hr) && resource) {
AutoTArray<DWRITE_FONT_AXIS_VALUE, 4> fontAxisValues;
// Get the variation settings needed to instantiate the fontEntry
// for a particular fontStyle, or use default style if no aFontStyle
// was passed (e.g. instantiating a face just to read font tables).
AutoTArray<gfxFontVariation, 4> vars;
GetVariationsForStyle(vars, aFontStyle ? *aFontStyle : gfxFontStyle());
// Copy variation settings to DWrite's type.
if (!vars.IsEmpty()) {
for (const auto& v : vars) {
DWRITE_FONT_AXIS_VALUE axisValue = {makeDWriteAxisTag(v.mTag),
v.mValue};
fontAxisValues.AppendElement(axisValue);
}
}
IDWriteFontFace5* ff5;
resource->CreateFontFace(aSimulations, fontAxisValues.Elements(),
fontAxisValues.Length(), &ff5);
if (ff5) {
*aFontFace = ff5;
return NS_OK;
}
}
}
// Do we need to add DWrite simulations to the face?
if (needSimulations) {
// if so, we need to return not mFontFace itself but a version that
// has the Bold simulation - unfortunately, old DWrite doesn't provide
// a simple API for this
UINT32 numberOfFiles = 0;
if (FAILED(mFontFace->GetFiles(&numberOfFiles, nullptr))) {
return NS_ERROR_FAILURE;
}
AutoTArray<IDWriteFontFile*, 1> files;
files.AppendElements(numberOfFiles);
if (FAILED(mFontFace->GetFiles(&numberOfFiles, files.Elements()))) {
return NS_ERROR_FAILURE;
}
HRESULT hr = Factory::GetDWriteFactory()->CreateFontFace(
mFontFace->GetType(), numberOfFiles, files.Elements(),
mFontFace->GetIndex(), aSimulations, aFontFace);
for (UINT32 i = 0; i < numberOfFiles; ++i) {
files[i]->Release();
}
return FAILED(hr) ? NS_ERROR_FAILURE : NS_OK;
}
// no simulation: we can just add a reference to mFontFace5 (if present)
// or mFontFace (otherwise) and return that
if (mFontFace5) {
*aFontFace = mFontFace5;
} else {
*aFontFace = mFontFace;
}
(*aFontFace)->AddRef();
return NS_OK;
}
bool gfxDWriteFontEntry::InitLogFont(IDWriteFont* aFont, LOGFONTW* aLogFont) {
HRESULT hr;
BOOL isInSystemCollection;
IDWriteGdiInterop* gdi =
gfxDWriteFontList::PlatformFontList()->GetGDIInterop();
hr = gdi->ConvertFontToLOGFONT(aFont, aLogFont, &isInSystemCollection);
// If the font is not in the system collection, GDI will be unable to
// select it and load its tables, so we return false here to indicate
// failure, and let CopyFontTable fall back to DWrite native methods.
return (SUCCEEDED(hr) && isInSystemCollection);
}
bool gfxDWriteFontEntry::IsCJKFont() {
if (mIsCJK != UNINITIALIZED_VALUE) {
return mIsCJK;
}
mIsCJK = false;
const uint32_t kOS2Tag = TRUETYPE_TAG('O', 'S', '/', '2');
hb_blob_t* blob = GetFontTable(kOS2Tag);
if (!blob) {
return mIsCJK;
}
// |blob| is an owning reference, but is not RAII-managed, so it must be
// explicitly freed using |hb_blob_destroy| before we return. (Beware of
// adding any early-return codepaths!)
uint32_t len;
const OS2Table* os2 =
reinterpret_cast<const OS2Table*>(hb_blob_get_data(blob, &len));
// ulCodePageRange bit definitions for the CJK codepages,
// from http://www.microsoft.com/typography/otspec/os2.htm#cpr
const uint32_t CJK_CODEPAGE_BITS =
(1 << 17) | // codepage 932 - JIS/Japan
(1 << 18) | // codepage 936 - Chinese (simplified)
(1 << 19) | // codepage 949 - Korean Wansung
(1 << 20) | // codepage 950 - Chinese (traditional)
(1 << 21); // codepage 1361 - Korean Johab
if (len >= offsetof(OS2Table, sxHeight)) {
if ((uint32_t(os2->codePageRange1) & CJK_CODEPAGE_BITS) != 0) {
mIsCJK = true;
}
}
hb_blob_destroy(blob);
return mIsCJK;
}
void gfxDWriteFontEntry::AddSizeOfExcludingThis(MallocSizeOf aMallocSizeOf,
FontListSizes* aSizes) const {
gfxFontEntry::AddSizeOfExcludingThis(aMallocSizeOf, aSizes);
// TODO:
// This doesn't currently account for the |mFont| and |mFontFile| members
}
void gfxDWriteFontEntry::AddSizeOfIncludingThis(MallocSizeOf aMallocSizeOf,
FontListSizes* aSizes) const {
aSizes->mFontListSize += aMallocSizeOf(this);
AddSizeOfExcludingThis(aMallocSizeOf, aSizes);
}
////////////////////////////////////////////////////////////////////////////////
// gfxDWriteFontList
gfxDWriteFontList::gfxDWriteFontList() : mForceGDIClassicMaxFontSize(0.0) {}
// bug 602792 - CJK systems default to large CJK fonts which cause excessive
// I/O strain during cold startup due to dwrite caching bugs. Default to
// Arial to avoid this.
FontFamily gfxDWriteFontList::GetDefaultFontForPlatform(
const gfxFontStyle* aStyle) {
// try Arial first
FontFamily ff;
ff = FindFamily(NS_LITERAL_CSTRING("Arial"));
if (!ff.IsNull()) {
return ff;
}
// otherwise, use local default
NONCLIENTMETRICSW ncm;
ncm.cbSize = sizeof(ncm);
BOOL status =
::SystemParametersInfoW(SPI_GETNONCLIENTMETRICS, sizeof(ncm), &ncm, 0);
if (status) {
ff = FindFamily(NS_ConvertUTF16toUTF8(ncm.lfMessageFont.lfFaceName));
}
return ff;
}
gfxFontEntry* gfxDWriteFontList::LookupLocalFont(
const nsACString& aFontName, WeightRange aWeightForEntry,
StretchRange aStretchForEntry, SlantStyleRange aStyleForEntry) {
if (SharedFontList()) {
return LookupInSharedFaceNameList(aFontName, aWeightForEntry,
aStretchForEntry, aStyleForEntry);
}
gfxFontEntry* lookup;
lookup = LookupInFaceNameLists(aFontName);
if (!lookup) {
return nullptr;
}
gfxDWriteFontEntry* dwriteLookup = static_cast<gfxDWriteFontEntry*>(lookup);
gfxDWriteFontEntry* fe =
new gfxDWriteFontEntry(lookup->Name(), dwriteLookup->mFont,
aWeightForEntry, aStretchForEntry, aStyleForEntry);
fe->SetForceGDIClassic(dwriteLookup->GetForceGDIClassic());
return fe;
}
gfxFontEntry* gfxDWriteFontList::MakePlatformFont(
const nsACString& aFontName, WeightRange aWeightForEntry,
StretchRange aStretchForEntry, SlantStyleRange aStyleForEntry,
const uint8_t* aFontData, uint32_t aLength) {
RefPtr<IDWriteFontFileStream> fontFileStream;
RefPtr<IDWriteFontFile> fontFile;
HRESULT hr = gfxDWriteFontFileLoader::CreateCustomFontFile(
aFontData, aLength, getter_AddRefs(fontFile),
getter_AddRefs(fontFileStream));
free((void*)aFontData);
if (FAILED(hr)) {
NS_WARNING("Failed to create custom font file reference.");
return nullptr;
}
nsAutoString uniqueName;
nsresult rv = gfxFontUtils::MakeUniqueUserFontName(uniqueName);
if (NS_FAILED(rv)) {
return nullptr;
}
BOOL isSupported;
DWRITE_FONT_FILE_TYPE fileType;
UINT32 numFaces;
gfxDWriteFontEntry* entry = new gfxDWriteFontEntry(
NS_ConvertUTF16toUTF8(uniqueName), fontFile, fontFileStream,
aWeightForEntry, aStretchForEntry, aStyleForEntry);
fontFile->Analyze(&isSupported, &fileType, &entry->mFaceType, &numFaces);
if (!isSupported || numFaces > 1) {
// We don't know how to deal with 0 faces either.
delete entry;
return nullptr;
}
return entry;
}
gfxFontEntry* gfxDWriteFontList::CreateFontEntry(
fontlist::Face* aFace, const fontlist::Family* aFamily) {
IDWriteFontCollection* collection =
#ifdef MOZ_BUNDLED_FONTS
aFamily->IsBundled() ? mBundledFonts : mSystemFonts;
#else
mSystemFonts;
#endif
RefPtr<IDWriteFontFamily> family;
collection->GetFontFamily(aFamily->Index(), getter_AddRefs(family));
RefPtr<IDWriteFont> font;
family->GetFont(aFace->mIndex, getter_AddRefs(font));
nsAutoCString faceName;
HRESULT hr = GetDirectWriteFontName(font, faceName);
if (FAILED(hr)) {
return nullptr;
}
auto fe = new gfxDWriteFontEntry(faceName, font, !aFamily->IsBundled());
fe->mStyleRange = aFace->mStyle;
fe->mStretchRange = aFace->mStretch;
fe->mWeightRange = aFace->mWeight;
fe->mShmemFace = aFace;
fe->mIsBadUnderlineFont = aFamily->IsBadUnderlineFamily();
fe->mFamilyName = aFamily->DisplayName().AsString(SharedFontList());
fe->mForceGDIClassic = aFamily->IsForceClassic();
return fe;
}
void gfxDWriteFontList::AppendFamiliesFromCollection(
IDWriteFontCollection* aCollection,
nsTArray<fontlist::Family::InitData>& aFamilies,
const nsTArray<nsCString>* aForceClassicFams) {
for (unsigned i = 0; i < aCollection->GetFontFamilyCount(); ++i) {
RefPtr<IDWriteFontFamily> family;
aCollection->GetFontFamily(i, getter_AddRefs(family));
RefPtr<IDWriteLocalizedStrings> names;
HRESULT hr = family->GetFamilyNames(getter_AddRefs(names));
if (FAILED(hr)) {
continue;
}
nsAutoCString key, name;
if (!GetEnglishOrFirstName(name, names)) {
continue;
}
key = name;
BuildKeyNameFromFontName(key);
bool bad = mBadUnderlineFamilyNames.ContainsSorted(key);
bool classic = aForceClassicFams && aForceClassicFams->ContainsSorted(key);
aFamilies.AppendElement(fontlist::Family::InitData(
key, name, i, false, aCollection != mSystemFonts, bad, classic));
}
}
void gfxDWriteFontList::GetFacesInitDataForFamily(
const fontlist::Family* aFamily,
nsTArray<fontlist::Face::InitData>& aFaces) const {
IDWriteFontCollection* collection =
#ifdef MOZ_BUNDLED_FONTS
aFamily->IsBundled() ? mBundledFonts : mSystemFonts;
#else
mSystemFonts;
#endif
if (!collection) {
return;
}
RefPtr<IDWriteFontFamily> family;
collection->GetFontFamily(aFamily->Index(), getter_AddRefs(family));