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gecko-dev/gfx/thebes/gfxDWriteFontList.cpp

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* 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/MemoryReporting.h"
#ifdef MOZ_LOGGING
#define FORCE_PR_LOG /* Allow logging in the release build */
#endif /* MOZ_LOGGING */
#include "gfxDWriteFontList.h"
#include "gfxDWriteFonts.h"
#include "nsUnicharUtils.h"
#include "nsILocaleService.h"
#include "nsServiceManagerUtils.h"
#include "nsCharSeparatedTokenizer.h"
#include "mozilla/Preferences.h"
#include "mozilla/Telemetry.h"
#include "gfxGDIFontList.h"
#include "nsIWindowsRegKey.h"
#include "harfbuzz/hb.h"
using namespace mozilla;
#define LOG_FONTLIST(args) PR_LOG(gfxPlatform::GetLog(eGfxLog_fontlist), \
PR_LOG_DEBUG, args)
#define LOG_FONTLIST_ENABLED() PR_LOG_TEST( \
gfxPlatform::GetLog(eGfxLog_fontlist), \
PR_LOG_DEBUG)
#define LOG_FONTINIT(args) PR_LOG(gfxPlatform::GetLog(eGfxLog_fontinit), \
PR_LOG_DEBUG, args)
#define LOG_FONTINIT_ENABLED() PR_LOG_TEST( \
gfxPlatform::GetLog(eGfxLog_fontinit), \
PR_LOG_DEBUG)
#define LOG_CMAPDATA_ENABLED() PR_LOG_TEST( \
gfxPlatform::GetLog(eGfxLog_cmapdata), \
PR_LOG_DEBUG)
static __inline void
BuildKeyNameFromFontName(nsAString &aName)
{
if (aName.Length() >= LF_FACESIZE)
aName.Truncate(LF_FACESIZE - 1);
ToLowerCase(aName);
}
////////////////////////////////////////////////////////////////////////////////
// gfxDWriteFontFamily
gfxDWriteFontFamily::~gfxDWriteFontFamily()
{
}
static HRESULT
GetDirectWriteFontName(IDWriteFont *aFont, nsAString& aFontName)
{
HRESULT hr;
nsRefPtr<IDWriteLocalizedStrings> names;
hr = aFont->GetFaceNames(getter_AddRefs(names));
if (FAILED(hr)) {
return hr;
}
BOOL exists;
nsAutoTArray<wchar_t,32> faceName;
UINT32 englishIdx = 0;
hr = names->FindLocaleName(L"en-us", &englishIdx, &exists);
if (FAILED(hr)) {
return hr;
}
if (!exists) {
// No english found, use whatever is first in the list.
englishIdx = 0;
}
UINT32 length;
hr = names->GetStringLength(englishIdx, &length);
if (FAILED(hr)) {
return hr;
}
faceName.SetLength(length + 1);
hr = names->GetString(englishIdx, faceName.Elements(), length + 1);
if (FAILED(hr)) {
return hr;
}
aFontName.Assign(faceName.Elements());
return S_OK;
}
// These strings are only defined in Win SDK 8+, so use #ifdef for now
#if MOZ_WINSDK_TARGETVER > 0x08000000
#define FULLNAME_ID DWRITE_INFORMATIONAL_STRING_FULL_NAME
#define PSNAME_ID DWRITE_INFORMATIONAL_STRING_POSTSCRIPT_NAME
#else
#define FULLNAME_ID DWRITE_INFORMATIONAL_STRING_ID(DWRITE_INFORMATIONAL_STRING_SAMPLE_TEXT + 1)
#define PSNAME_ID DWRITE_INFORMATIONAL_STRING_ID(DWRITE_INFORMATIONAL_STRING_SAMPLE_TEXT + 2)
#endif
// for use in reading postscript or fullname
static HRESULT
GetDirectWriteFaceName(IDWriteFont *aFont,
DWRITE_INFORMATIONAL_STRING_ID aWhichName,
nsAString& aFontName)
{
HRESULT hr;
BOOL exists;
nsRefPtr<IDWriteLocalizedStrings> infostrings;
hr = aFont->GetInformationalStrings(aWhichName, getter_AddRefs(infostrings), &exists);
if (FAILED(hr) || !exists) {
return E_FAIL;
}
nsAutoTArray<wchar_t,32> faceName;
UINT32 englishIdx = 0;
hr = infostrings->FindLocaleName(L"en-us", &englishIdx, &exists);
if (FAILED(hr)) {
return hr;
}
if (!exists) {
// No english found, use whatever is first in the list.
englishIdx = 0;
}
UINT32 length;
hr = infostrings->GetStringLength(englishIdx, &length);
if (FAILED(hr)) {
return hr;
}
faceName.SetLength(length + 1);
hr = infostrings->GetString(englishIdx, faceName.Elements(), length + 1);
if (FAILED(hr)) {
return hr;
}
aFontName.Assign(faceName.Elements());
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++) {
nsRefPtr<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_OBLIQUE) {
// We don't want these.
continue;
}
// name
nsString fullID(mName);
nsAutoString faceName;
hr = GetDirectWriteFontName(font, faceName);
if (FAILED(hr)) {
continue;
}
fullID.Append(NS_LITERAL_STRING(" "));
fullID.Append(faceName);
gfxDWriteFontEntry *fe = new gfxDWriteFontEntry(fullID, font);
fe->SetForceGDIClassic(mForceGDIClassic);
AddFontEntry(fe);
// postscript/fullname if needed
nsAutoString 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);
}
}
#ifdef PR_LOGGING
if (LOG_FONTLIST_ENABLED()) {
LOG_FONTLIST(("(fontlist) added (%s) to family (%s)"
" with style: %s weight: %d stretch: %d psname: %s fullname: %s",
NS_ConvertUTF16toUTF8(fe->Name()).get(),
NS_ConvertUTF16toUTF8(Name()).get(),
(fe->IsItalic()) ? "italic" : "normal",
fe->Weight(), fe->Stretch(),
NS_ConvertUTF16toUTF8(psname).get(),
NS_ConvertUTF16toUTF8(fullname).get()));
}
#endif
}
// 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)
{
// if all needed names have already been read, skip
if (mOtherFamilyNamesInitialized &&
(mFaceNamesInitialized || !aNeedFullnamePostscriptNames)) {
return;
}
// 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);
}
}
void
gfxDWriteFontFamily::LocalizedName(nsAString &aLocalizedName)
{
aLocalizedName.AssignLiteral("Unknown Font");
HRESULT hr;
nsresult rv;
nsCOMPtr<nsILocaleService> ls = do_GetService(NS_LOCALESERVICE_CONTRACTID,
&rv);
nsCOMPtr<nsILocale> locale;
rv = ls->GetApplicationLocale(getter_AddRefs(locale));
nsString localeName;
if (NS_SUCCEEDED(rv)) {
rv = locale->GetCategory(NS_LITERAL_STRING(NSILOCALE_MESSAGE),
localeName);
}
if (NS_FAILED(rv)) {
localeName.AssignLiteral("en-us");
}
nsRefPtr<IDWriteLocalizedStrings> names;
hr = mDWFamily->GetFamilyNames(getter_AddRefs(names));
if (FAILED(hr)) {
return;
}
UINT32 idx = 0;
BOOL exists;
hr = names->FindLocaleName(localeName.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;
}
}
AutoFallibleTArray<WCHAR, 32> famName;
UINT32 length;
hr = names->GetStringLength(idx, &length);
if (FAILED(hr)) {
return;
}
if (!famName.SetLength(length + 1)) {
// Eeep - running out of memory. Unlikely to end well.
return;
}
hr = names->GetString(idx, famName.Elements(), length + 1);
if (FAILED(hr)) {
return;
}
aLocalizedName = nsDependentString(famName.Elements());
}
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
gfxDWriteFontEntry::~gfxDWriteFontEntry()
{
}
bool
gfxDWriteFontEntry::IsSymbolFont()
{
if (mFont) {
return mFont->IsSymbolFont();
} else {
return false;
}
}
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,
FallibleTArray<uint8_t> &aBuffer)
{
gfxDWriteFontList *pFontList = gfxDWriteFontList::PlatformFontList();
// 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() &&
!(mItalic && UsingArabicOrHebrewScriptSystemLocale()) &&
!mFont->IsSymbolFont())
{
LOGFONTW logfont = { 0 };
if (!InitLogFont(mFont, &logfont))
return NS_ERROR_FAILURE;
AutoDC dc;
AutoSelectFont font(dc.GetDC(), &logfont);
if (font.IsValid()) {
uint32_t tableSize =
::GetFontData(dc.GetDC(),
NativeEndian::swapToBigEndian(aTableTag), 0,
nullptr, 0);
if (tableSize != GDI_ERROR) {
if (aBuffer.SetLength(tableSize)) {
::GetFontData(dc.GetDC(),
NativeEndian::swapToBigEndian(aTableTag), 0,
aBuffer.Elements(), aBuffer.Length());
return NS_OK;
}
return NS_ERROR_OUT_OF_MEMORY;
}
}
return NS_ERROR_FAILURE;
}
nsRefPtr<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(NativeEndian::swapToBigEndian(aTableTag),
(const void**)&tableData, &len,
&tableContext, &exists);
if (FAILED(hr) || !exists) {
return NS_ERROR_FAILURE;
}
if (aBuffer.SetLength(len)) {
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)
{ }
~FontTableRec() {
mFontFace->ReleaseFontTable(mContext);
}
private:
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)
{
// attempt this once, if errors occur leave a blank cmap
if (mCharacterMap) {
return NS_OK;
}
nsRefPtr<gfxCharacterMap> charmap;
nsresult rv;
bool symbolFont;
if (aFontInfoData && (charmap = GetCMAPFromFontInfo(aFontInfoData,
mUVSOffset,
symbolFont))) {
rv = NS_OK;
} else {
uint32_t kCMAP = TRUETYPE_TAG('c','m','a','p');
charmap = new gfxCharacterMap();
AutoTable cmapTable(this, kCMAP);
if (cmapTable) {
bool unicodeFont = false, symbolFont = false; // currently ignored
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,
unicodeFont, symbolFont);
} 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();
mCharacterMap = pfl->FindCharMap(charmap);
} else {
// if error occurred, initialize to null cmap
mCharacterMap = new gfxCharacterMap();
}
#ifdef PR_LOGGING
LOG_FONTLIST(("(fontlist-cmap) name: %s, size: %d hash: %8.8x%s\n",
NS_ConvertUTF16toUTF8(mName).get(),
charmap->SizeOfIncludingThis(moz_malloc_size_of),
charmap->mHash, mCharacterMap == charmap ? " new" : ""));
if (LOG_CMAPDATA_ENABLED()) {
char prefix[256];
sprintf(prefix, "(cmapdata) name: %.220s",
NS_ConvertUTF16toUTF8(mName).get());
charmap->Dump(prefix, eGfxLog_cmapdata);
}
#endif
return rv;
}
gfxFont *
gfxDWriteFontEntry::CreateFontInstance(const gfxFontStyle* aFontStyle,
bool aNeedsBold)
{
return new gfxDWriteFont(this, aFontStyle, aNeedsBold);
}
nsresult
gfxDWriteFontEntry::CreateFontFace(IDWriteFontFace **aFontFace,
DWRITE_FONT_SIMULATIONS aSimulations)
{
// 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 = gfxWindowsPlatform::GetPlatform()->GetDWriteFactory()->
CreateFontFace(mFaceType,
1,
&fontFile,
0,
DWRITE_FONT_SIMULATIONS_NONE,
getter_AddRefs(mFontFace));
} else {
NS_NOTREACHED("invalid font entry");
return NS_ERROR_FAILURE;
}
if (FAILED(hr)) {
return NS_ERROR_FAILURE;
}
}
// check whether we need to add a DWrite simulated style
if ((aSimulations & DWRITE_FONT_SIMULATIONS_BOLD) &&
!(mFontFace->GetSimulations() & DWRITE_FONT_SIMULATIONS_BOLD)) {
// if so, we need to return not mFontFace itself but a version that
// has the Bold simulation - unfortunately, DWrite doesn't provide
// a simple API for this
UINT32 numberOfFiles = 0;
if (FAILED(mFontFace->GetFiles(&numberOfFiles, nullptr))) {
return NS_ERROR_FAILURE;
}
nsAutoTArray<IDWriteFontFile*,1> files;
files.AppendElements(numberOfFiles);
if (FAILED(mFontFace->GetFiles(&numberOfFiles, files.Elements()))) {
return NS_ERROR_FAILURE;
}
HRESULT hr = gfxWindowsPlatform::GetPlatform()->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 mFontFace and return that
*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);
return (FAILED(hr) ? false : true);
}
bool
gfxDWriteFontEntry::IsCJKFont()
{
if (mIsCJK != UNINITIALIZED_VALUE) {
return mIsCJK;
}
mIsCJK = false;
const uint32_t kOS2Tag = TRUETYPE_TAG('O','S','/','2');
AutoFallibleTArray<uint8_t,128> buffer;
if (CopyFontTable(kOS2Tag, buffer) != NS_OK) {
return mIsCJK;
}
// 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 (buffer.Length() >= offsetof(OS2Table, sxHeight)) {
const OS2Table* os2 =
reinterpret_cast<const OS2Table*>(buffer.Elements());
if ((uint32_t(os2->codePageRange1) & CJK_CODEPAGE_BITS) != 0) {
mIsCJK = true;
}
}
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()
: mInitialized(false), 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.
gfxFontFamily *
gfxDWriteFontList::GetDefaultFont(const gfxFontStyle *aStyle)
{
nsAutoString resolvedName;
// try Arial first
if (ResolveFontName(NS_LITERAL_STRING("Arial"), resolvedName)) {
return FindFamily(resolvedName);
}
// otherwise, use local default
NONCLIENTMETRICSW ncm;
ncm.cbSize = sizeof(ncm);
BOOL status = ::SystemParametersInfoW(SPI_GETNONCLIENTMETRICS,
sizeof(ncm), &ncm, 0);
if (status) {
if (ResolveFontName(nsDependentString(ncm.lfMessageFont.lfFaceName),
resolvedName)) {
return FindFamily(resolvedName);
}
}
return nullptr;
}
gfxFontEntry *
gfxDWriteFontList::LookupLocalFont(const gfxProxyFontEntry *aProxyEntry,
const nsAString& aFullname)
{
gfxFontEntry *lookup;
// initialize name lookup tables if needed
if (!mFaceNamesInitialized) {
InitFaceNameLists();
}
// lookup in name lookup tables, return null if not found
if (!(lookup = mExtraNames->mPostscriptNames.GetWeak(aFullname)) &&
!(lookup = mExtraNames->mFullnames.GetWeak(aFullname)))
{
return nullptr;
}
gfxDWriteFontEntry* dwriteLookup = static_cast<gfxDWriteFontEntry*>(lookup);
gfxDWriteFontEntry *fe =
new gfxDWriteFontEntry(lookup->Name(),
dwriteLookup->mFont,
aProxyEntry->Weight(),
aProxyEntry->Stretch(),
aProxyEntry->IsItalic());
fe->SetForceGDIClassic(dwriteLookup->GetForceGDIClassic());
return fe;
}
gfxFontEntry *
gfxDWriteFontList::MakePlatformFont(const gfxProxyFontEntry *aProxyEntry,
const uint8_t *aFontData,
uint32_t aLength)
{
nsresult rv;
nsAutoString uniqueName;
rv = gfxFontUtils::MakeUniqueUserFontName(uniqueName);
if (NS_FAILED(rv)) {
NS_Free((void*)aFontData);
return nullptr;
}
FallibleTArray<uint8_t> newFontData;
rv = gfxFontUtils::RenameFont(uniqueName, aFontData, aLength, &newFontData);
NS_Free((void*)aFontData);
if (NS_FAILED(rv)) {
return nullptr;
}
nsRefPtr<IDWriteFontFile> fontFile;
HRESULT hr;
/**
* We pass in a pointer to a structure containing a pointer to the array
* containing the font data and a unique identifier. DWrite will
* internally copy what is at that pointer, and pass that to
* CreateStreamFromKey. The array will be empty when the function
* succesfully returns since it swaps out the data.
*/
ffReferenceKey key;
key.mArray = &newFontData;
nsCOMPtr<nsIUUIDGenerator> uuidgen =
do_GetService("@mozilla.org/uuid-generator;1");
if (!uuidgen) {
return nullptr;
}
rv = uuidgen->GenerateUUIDInPlace(&key.mGUID);
if (NS_FAILED(rv)) {
return nullptr;
}
hr = gfxWindowsPlatform::GetPlatform()->GetDWriteFactory()->
CreateCustomFontFileReference(&key,
sizeof(key),
gfxDWriteFontFileLoader::Instance(),
getter_AddRefs(fontFile));
if (FAILED(hr)) {
NS_WARNING("Failed to create custom font file reference.");
return nullptr;
}
BOOL isSupported;
DWRITE_FONT_FILE_TYPE fileType;
UINT32 numFaces;
gfxDWriteFontEntry *entry =
new gfxDWriteFontEntry(uniqueName,
fontFile,
aProxyEntry->Weight(),
aProxyEntry->Stretch(),
aProxyEntry->IsItalic());
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;
}
#ifdef DEBUG_DWRITE_STARTUP
#define LOGREGISTRY(msg) LogRegistryEvent(msg)
// for use when monitoring process
static void LogRegistryEvent(const wchar_t *msg)
{
HKEY dummyKey;
HRESULT hr;
wchar_t buf[512];
wsprintfW(buf, L" log %s", msg);
hr = RegOpenKeyExW(HKEY_LOCAL_MACHINE, buf, 0, KEY_READ, &dummyKey);
if (SUCCEEDED(hr)) {
RegCloseKey(dummyKey);
}
}
#else
#define LOGREGISTRY(msg)
#endif
nsresult
gfxDWriteFontList::InitFontList()
{
LOGREGISTRY(L"InitFontList start");
mInitialized = false;
LARGE_INTEGER frequency; // ticks per second
LARGE_INTEGER t1, t2, t3; // ticks
double elapsedTime, upTime;
char nowTime[256], nowDate[256];
if (LOG_FONTINIT_ENABLED()) {
GetTimeFormat(LOCALE_INVARIANT, TIME_FORCE24HOURFORMAT,
nullptr, nullptr, nowTime, 256);
GetDateFormat(LOCALE_INVARIANT, 0, nullptr, nullptr, nowDate, 256);
}
upTime = (double) GetTickCount();
QueryPerformanceFrequency(&frequency);
QueryPerformanceCounter(&t1);
HRESULT hr;
gfxFontCache *fc = gfxFontCache::GetCache();
if (fc) {
fc->AgeAllGenerations();
}
mGDIFontTableAccess = Preferences::GetBool("gfx.font_rendering.directwrite.use_gdi_table_loading", false);
gfxPlatformFontList::InitFontList();
mFontSubstitutes.Clear();
mNonExistingFonts.Clear();
QueryPerformanceCounter(&t2);
hr = gfxWindowsPlatform::GetPlatform()->GetDWriteFactory()->
GetGdiInterop(getter_AddRefs(mGDIInterop));
if (FAILED(hr)) {
return NS_ERROR_FAILURE;
}
LOGREGISTRY(L"InitFontList end");
QueryPerformanceCounter(&t3);
if (LOG_FONTINIT_ENABLED()) {
// determine dwrite version
nsAutoString dwriteVers;
gfxWindowsPlatform::GetDLLVersion(L"dwrite.dll", dwriteVers);
LOG_FONTINIT(("InitFontList\n"));
LOG_FONTINIT(("Start: %s %s\n", nowDate, nowTime));
LOG_FONTINIT(("Uptime: %9.3f s\n", upTime/1000));
LOG_FONTINIT(("dwrite version: %s\n",
NS_ConvertUTF16toUTF8(dwriteVers).get()));
}
elapsedTime = (t3.QuadPart - t1.QuadPart) * 1000.0 / frequency.QuadPart;
Telemetry::Accumulate(Telemetry::DWRITEFONT_INITFONTLIST_TOTAL, elapsedTime);
LOG_FONTINIT(("Total time in InitFontList: %9.3f ms\n", elapsedTime));
elapsedTime = (t2.QuadPart - t1.QuadPart) * 1000.0 / frequency.QuadPart;
Telemetry::Accumulate(Telemetry::DWRITEFONT_INITFONTLIST_INIT, elapsedTime);
LOG_FONTINIT((" --- gfxPlatformFontList init: %9.3f ms\n", elapsedTime));
elapsedTime = (t3.QuadPart - t2.QuadPart) * 1000.0 / frequency.QuadPart;
Telemetry::Accumulate(Telemetry::DWRITEFONT_INITFONTLIST_GDI, elapsedTime);
LOG_FONTINIT((" --- GdiInterop object: %9.3f ms\n", elapsedTime));
return NS_OK;
}
nsresult
gfxDWriteFontList::DelayedInitFontList()
{
LOGREGISTRY(L"DelayedInitFontList start");
LARGE_INTEGER frequency; // ticks per second
LARGE_INTEGER t1, t2, t3; // ticks
double elapsedTime, upTime;
char nowTime[256], nowDate[256];
if (LOG_FONTINIT_ENABLED()) {
GetTimeFormat(LOCALE_INVARIANT, TIME_FORCE24HOURFORMAT,
nullptr, nullptr, nowTime, 256);
GetDateFormat(LOCALE_INVARIANT, 0, nullptr, nullptr, nowDate, 256);
}
upTime = (double) GetTickCount();
QueryPerformanceFrequency(&frequency);
QueryPerformanceCounter(&t1);
HRESULT hr;
LOGREGISTRY(L"calling GetSystemFontCollection");
nsRefPtr<IDWriteFontCollection> systemFonts;
hr = gfxWindowsPlatform::GetPlatform()->GetDWriteFactory()->
GetSystemFontCollection(getter_AddRefs(systemFonts));
NS_ASSERTION(SUCCEEDED(hr), "GetSystemFontCollection failed!");
LOGREGISTRY(L"GetSystemFontCollection done");
if (FAILED(hr)) {
return NS_ERROR_FAILURE;
}
QueryPerformanceCounter(&t2);
for (UINT32 i = 0; i < systemFonts->GetFontFamilyCount(); i++) {
nsRefPtr<IDWriteFontFamily> family;
systemFonts->GetFontFamily(i, getter_AddRefs(family));
nsRefPtr<IDWriteLocalizedStrings> names;
hr = family->GetFamilyNames(getter_AddRefs(names));
if (FAILED(hr)) {
continue;
}
UINT32 englishIdx = 0;
BOOL exists;
hr = names->FindLocaleName(L"en-us", &englishIdx, &exists);
if (FAILED(hr)) {
continue;
}
if (!exists) {
// Use 0 index if english is not found.
englishIdx = 0;
}
AutoFallibleTArray<WCHAR, 32> enName;
UINT32 length;
hr = names->GetStringLength(englishIdx, &length);
if (FAILED(hr)) {
continue;
}
if (!enName.SetLength(length + 1)) {
// Eeep - running out of memory. Unlikely to end well.
continue;
}
hr = names->GetString(englishIdx, enName.Elements(), length + 1);
if (FAILED(hr)) {
continue;
}
nsAutoString name(enName.Elements());
BuildKeyNameFromFontName(name);
nsRefPtr<gfxFontFamily> fam;
if (mFontFamilies.GetWeak(name)) {
continue;
}
nsDependentString familyName(enName.Elements());
fam = new gfxDWriteFontFamily(familyName, family);
if (!fam) {
continue;
}
if (mBadUnderlineFamilyNames.Contains(name)) {
fam->SetBadUnderlineFamily();
}
mFontFamilies.Put(name, fam);
// now add other family name localizations, if present
uint32_t nameCount = names->GetCount();
uint32_t nameIndex;
for (nameIndex = 0; nameIndex < nameCount; nameIndex++) {
UINT32 nameLen;
AutoFallibleTArray<WCHAR, 32> localizedName;
// only add other names
if (nameIndex == englishIdx) {
continue;
}
hr = names->GetStringLength(nameIndex, &nameLen);
if (FAILED(hr)) {
continue;
}
if (!localizedName.SetLength(nameLen + 1)) {
continue;
}
hr = names->GetString(nameIndex, localizedName.Elements(),
nameLen + 1);
if (FAILED(hr)) {
continue;
}
nsDependentString locName(localizedName.Elements());
if (!familyName.Equals(locName)) {
AddOtherFamilyName(fam, locName);
}
}
// at this point, all family names have been read in
fam->SetOtherFamilyNamesInitialized();
}
mOtherFamilyNamesInitialized = true;
GetFontSubstitutes();
// bug 642093 - DirectWrite does not support old bitmap (.fon)
// font files, but a few of these such as "Courier" and "MS Sans Serif"
// are frequently specified in shoddy CSS, without appropriate fallbacks.
// By mapping these to TrueType equivalents, we provide better consistency
// with both pre-DW systems and with IE9, which appears to do the same.
GetDirectWriteSubstitutes();
// bug 551313 - DirectWrite creates a Gill Sans family out of
// poorly named members of the Gill Sans MT family containing
// only Ultra Bold weights. This causes big problems for pages
// using Gill Sans which is usually only available on OSX
nsAutoString nameGillSans(L"Gill Sans");
nsAutoString nameGillSansMT(L"Gill Sans MT");
BuildKeyNameFromFontName(nameGillSans);
BuildKeyNameFromFontName(nameGillSansMT);
gfxFontFamily *gillSansFamily = mFontFamilies.GetWeak(nameGillSans);
gfxFontFamily *gillSansMTFamily = mFontFamilies.GetWeak(nameGillSansMT);
if (gillSansFamily && gillSansMTFamily) {
gillSansFamily->FindStyleVariations();
nsTArray<nsRefPtr<gfxFontEntry> >& faces = gillSansFamily->GetFontList();
uint32_t i;
bool allUltraBold = true;
for (i = 0; i < faces.Length(); i++) {
// does the face have 'Ultra Bold' in the name?
if (faces[i]->Name().Find(NS_LITERAL_STRING("Ultra Bold")) == -1) {
allUltraBold = false;
break;
}
}
// if all the Gill Sans faces are Ultra Bold ==> move faces
// for Gill Sans into Gill Sans MT family
if (allUltraBold) {
// add faces to Gill Sans MT
for (i = 0; i < faces.Length(); i++) {
gillSansMTFamily->AddFontEntry(faces[i]);
#ifdef PR_LOGGING
if (LOG_FONTLIST_ENABLED()) {
gfxFontEntry *fe = faces[i];
LOG_FONTLIST(("(fontlist) moved (%s) to family (%s)"
" with style: %s weight: %d stretch: %d",
NS_ConvertUTF16toUTF8(fe->Name()).get(),
NS_ConvertUTF16toUTF8(gillSansMTFamily->Name()).get(),
(fe->IsItalic()) ? "italic" : "normal",
fe->Weight(), fe->Stretch()));
}
#endif
}
// remove Gills Sans
mFontFamilies.Remove(nameGillSans);
}
}
nsAdoptingCString classicFamilies =
Preferences::GetCString("gfx.font_rendering.cleartype_params.force_gdi_classic_for_families");
if (classicFamilies) {
nsCCharSeparatedTokenizer tokenizer(classicFamilies, ',');
while (tokenizer.hasMoreTokens()) {
NS_ConvertUTF8toUTF16 name(tokenizer.nextToken());
BuildKeyNameFromFontName(name);
gfxFontFamily *family = mFontFamilies.GetWeak(name);
if (family) {
static_cast<gfxDWriteFontFamily*>(family)->SetForceGDIClassic(true);
}
}
}
mForceGDIClassicMaxFontSize =
Preferences::GetInt("gfx.font_rendering.cleartype_params.force_gdi_classic_max_size",
mForceGDIClassicMaxFontSize);
GetPrefsAndStartLoader();
LOGREGISTRY(L"DelayedInitFontList end");
QueryPerformanceCounter(&t3);
if (LOG_FONTINIT_ENABLED()) {
// determine dwrite version
nsAutoString dwriteVers;
gfxWindowsPlatform::GetDLLVersion(L"dwrite.dll", dwriteVers);
LOG_FONTINIT(("DelayedInitFontList\n"));
LOG_FONTINIT(("Start: %s %s\n", nowDate, nowTime));
LOG_FONTINIT(("Uptime: %9.3f s\n", upTime/1000));
LOG_FONTINIT(("dwrite version: %s\n",
NS_ConvertUTF16toUTF8(dwriteVers).get()));
}
elapsedTime = (t3.QuadPart - t1.QuadPart) * 1000.0 / frequency.QuadPart;
Telemetry::Accumulate(Telemetry::DWRITEFONT_DELAYEDINITFONTLIST_TOTAL, elapsedTime);
Telemetry::Accumulate(Telemetry::DWRITEFONT_DELAYEDINITFONTLIST_COUNT,
systemFonts->GetFontFamilyCount());
Telemetry::Accumulate(Telemetry::DWRITEFONT_DELAYEDINITFONTLIST_GDI_TABLE, mGDIFontTableAccess);
LOG_FONTINIT((
"Total time in DelayedInitFontList: %9.3f ms (families: %d, %s)\n",
elapsedTime, systemFonts->GetFontFamilyCount(),
(mGDIFontTableAccess ? "gdi table access" : "dwrite table access")));
elapsedTime = (t2.QuadPart - t1.QuadPart) * 1000.0 / frequency.QuadPart;
Telemetry::Accumulate(Telemetry::DWRITEFONT_DELAYEDINITFONTLIST_COLLECT, elapsedTime);
LOG_FONTINIT((" --- GetSystemFontCollection: %9.3f ms\n", elapsedTime));
elapsedTime = (t3.QuadPart - t2.QuadPart) * 1000.0 / frequency.QuadPart;
Telemetry::Accumulate(Telemetry::DWRITEFONT_DELAYEDINITFONTLIST_ITERATE, elapsedTime);
LOG_FONTINIT((" --- iterate over families: %9.3f ms\n", elapsedTime));
return NS_OK;
}
static void
RemoveCharsetFromFontSubstitute(nsAString &aName)
{
int32_t comma = aName.FindChar(char16_t(','));
if (comma >= 0)
aName.Truncate(comma);
}
#define MAX_VALUE_NAME 512
#define MAX_VALUE_DATA 512
nsresult
gfxDWriteFontList::GetFontSubstitutes()
{
HKEY hKey;
DWORD i, rv, lenAlias, lenActual, valueType;
WCHAR aliasName[MAX_VALUE_NAME];
WCHAR actualName[MAX_VALUE_DATA];
if (RegOpenKeyExW(HKEY_LOCAL_MACHINE,
L"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\FontSubstitutes",
0, KEY_READ, &hKey) != ERROR_SUCCESS)
{
return NS_ERROR_FAILURE;
}
for (i = 0, rv = ERROR_SUCCESS; rv != ERROR_NO_MORE_ITEMS; i++) {
aliasName[0] = 0;
lenAlias = ArrayLength(aliasName);
actualName[0] = 0;
lenActual = sizeof(actualName);
rv = RegEnumValueW(hKey, i, aliasName, &lenAlias, nullptr, &valueType,
(LPBYTE)actualName, &lenActual);
if (rv != ERROR_SUCCESS || valueType != REG_SZ || lenAlias == 0) {
continue;
}
if (aliasName[0] == WCHAR('@')) {
continue;
}
nsAutoString substituteName((char16_t*) aliasName);
nsAutoString actualFontName((char16_t*) actualName);
RemoveCharsetFromFontSubstitute(substituteName);
BuildKeyNameFromFontName(substituteName);
RemoveCharsetFromFontSubstitute(actualFontName);
BuildKeyNameFromFontName(actualFontName);
gfxFontFamily *ff;
if (!actualFontName.IsEmpty() &&
(ff = mFontFamilies.GetWeak(actualFontName))) {
mFontSubstitutes.Put(substituteName, ff);
} else {
mNonExistingFonts.AppendElement(substituteName);
}
}
return NS_OK;
}
struct FontSubstitution {
const WCHAR* aliasName;
const WCHAR* actualName;
};
static const FontSubstitution sDirectWriteSubs[] = {
{ L"MS Sans Serif", L"Microsoft Sans Serif" },
{ L"MS Serif", L"Times New Roman" },
{ L"Courier", L"Courier New" },
{ L"Small Fonts", L"Arial" },
{ L"Roman", L"Times New Roman" },
{ L"Script", L"Mistral" }
};
void
gfxDWriteFontList::GetDirectWriteSubstitutes()
{
for (uint32_t i = 0; i < ArrayLength(sDirectWriteSubs); ++i) {
const FontSubstitution& sub(sDirectWriteSubs[i]);
nsAutoString substituteName((char16_t*)sub.aliasName);
BuildKeyNameFromFontName(substituteName);
if (nullptr != mFontFamilies.GetWeak(substituteName)) {
// don't do the substitution if user actually has a usable font
// with this name installed
continue;
}
nsAutoString actualFontName((char16_t*)sub.actualName);
BuildKeyNameFromFontName(actualFontName);
gfxFontFamily *ff;
if (nullptr != (ff = mFontFamilies.GetWeak(actualFontName))) {
mFontSubstitutes.Put(substituteName, ff);
} else {
mNonExistingFonts.AppendElement(substituteName);
}
}
}
bool
gfxDWriteFontList::GetStandardFamilyName(const nsAString& aFontName,
nsAString& aFamilyName)
{
gfxFontFamily *family = FindFamily(aFontName);
if (family) {
family->LocalizedName(aFamilyName);
return true;
}
return false;
}
gfxFontFamily* gfxDWriteFontList::FindFamily(const nsAString& aFamily)
{
if (!mInitialized) {
mInitialized = true;
DelayedInitFontList();
}
return gfxPlatformFontList::FindFamily(aFamily);
}
void
gfxDWriteFontList::GetFontFamilyList(nsTArray<nsRefPtr<gfxFontFamily> >& aFamilyArray)
{
if (!mInitialized) {
mInitialized = true;
DelayedInitFontList();
}
return gfxPlatformFontList::GetFontFamilyList(aFamilyArray);
}
bool
gfxDWriteFontList::ResolveFontName(const nsAString& aFontName,
nsAString& aResolvedFontName)
{
if (!mInitialized) {
mInitialized = true;
DelayedInitFontList();
}
nsAutoString keyName(aFontName);
BuildKeyNameFromFontName(keyName);
gfxFontFamily *ff = mFontSubstitutes.GetWeak(keyName);
if (ff) {
aResolvedFontName = ff->Name();
return true;
}
if (mNonExistingFonts.Contains(keyName)) {
return false;
}
return gfxPlatformFontList::ResolveFontName(aFontName, aResolvedFontName);
}
void
gfxDWriteFontList::AddSizeOfExcludingThis(MallocSizeOf aMallocSizeOf,
FontListSizes* aSizes) const
{
gfxPlatformFontList::AddSizeOfExcludingThis(aMallocSizeOf, aSizes);
aSizes->mFontListSize +=
mFontSubstitutes.SizeOfExcludingThis(SizeOfFamilyNameEntryExcludingThis,
aMallocSizeOf);
aSizes->mFontListSize +=
mNonExistingFonts.SizeOfExcludingThis(aMallocSizeOf);
for (uint32_t i = 0; i < mNonExistingFonts.Length(); ++i) {
aSizes->mFontListSize +=
mNonExistingFonts[i].SizeOfExcludingThisIfUnshared(aMallocSizeOf);
}
}
void
gfxDWriteFontList::AddSizeOfIncludingThis(MallocSizeOf aMallocSizeOf,
FontListSizes* aSizes) const
{
aSizes->mFontListSize += aMallocSizeOf(this);
AddSizeOfExcludingThis(aMallocSizeOf, aSizes);
}
static HRESULT GetFamilyName(IDWriteFont *aFont, nsString& aFamilyName)
{
HRESULT hr;
nsRefPtr<IDWriteFontFamily> family;
// clean out previous value
aFamilyName.Truncate();
hr = aFont->GetFontFamily(getter_AddRefs(family));
if (FAILED(hr)) {
return hr;
}
nsRefPtr<IDWriteLocalizedStrings> familyNames;
hr = family->GetFamilyNames(getter_AddRefs(familyNames));
if (FAILED(hr)) {
return hr;
}
UINT32 index = 0;
BOOL exists = false;
hr = familyNames->FindLocaleName(L"en-us", &index, &exists);
if (FAILED(hr)) {
return hr;
}
// If the specified locale doesn't exist, select the first on the list.
if (!exists) {
index = 0;
}
AutoFallibleTArray<WCHAR, 32> name;
UINT32 length;
hr = familyNames->GetStringLength(index, &length);
if (FAILED(hr)) {
return hr;
}
if (!name.SetLength(length + 1)) {
return E_FAIL;
}
hr = familyNames->GetString(index, name.Elements(), length + 1);
if (FAILED(hr)) {
return hr;
}
aFamilyName.Assign(name.Elements());
return S_OK;
}
// bug 705594 - the method below doesn't actually do any "drawing", it's only
// used to invoke the DirectWrite layout engine to determine the fallback font
// for a given character.
IFACEMETHODIMP FontFallbackRenderer::DrawGlyphRun(
void* clientDrawingContext,
FLOAT baselineOriginX,
FLOAT baselineOriginY,
DWRITE_MEASURING_MODE measuringMode,
DWRITE_GLYPH_RUN const* glyphRun,
DWRITE_GLYPH_RUN_DESCRIPTION const* glyphRunDescription,
IUnknown* clientDrawingEffect
)
{
if (!mSystemFonts) {
return E_FAIL;
}
HRESULT hr = S_OK;
nsRefPtr<IDWriteFont> font;
hr = mSystemFonts->GetFontFromFontFace(glyphRun->fontFace,
getter_AddRefs(font));
if (FAILED(hr)) {
return hr;
}
// copy the family name
hr = GetFamilyName(font, mFamilyName);
if (FAILED(hr)) {
return hr;
}
// Arial is used as the default fallback font
// so if it matches ==> no font found
if (mFamilyName.EqualsLiteral("Arial")) {
mFamilyName.Truncate();
return E_FAIL;
}
return hr;
}
gfxFontEntry*
gfxDWriteFontList::GlobalFontFallback(const uint32_t aCh,
int32_t aRunScript,
const gfxFontStyle* aMatchStyle,
uint32_t& aCmapCount,
gfxFontFamily** aMatchedFamily)
{
bool useCmaps = gfxPlatform::GetPlatform()->UseCmapsDuringSystemFallback();
if (useCmaps) {
return gfxPlatformFontList::GlobalFontFallback(aCh,
aRunScript,
aMatchStyle,
aCmapCount,
aMatchedFamily);
}
HRESULT hr;
nsRefPtr<IDWriteFactory> dwFactory =
gfxWindowsPlatform::GetPlatform()->GetDWriteFactory();
if (!dwFactory) {
return nullptr;
}
// initialize fallback renderer
if (!mFallbackRenderer) {
mFallbackRenderer = new FontFallbackRenderer(dwFactory);
}
// initialize text format
if (!mFallbackFormat) {
hr = dwFactory->CreateTextFormat(L"Arial", nullptr,
DWRITE_FONT_WEIGHT_REGULAR,
DWRITE_FONT_STYLE_NORMAL,
DWRITE_FONT_STRETCH_NORMAL,
72.0f, L"en-us",
getter_AddRefs(mFallbackFormat));
if (FAILED(hr)) {
return nullptr;
}
}
// set up string with fallback character
wchar_t str[16];
uint32_t strLen;
if (IS_IN_BMP(aCh)) {
str[0] = static_cast<wchar_t> (aCh);
str[1] = 0;
strLen = 1;
} else {
str[0] = static_cast<wchar_t> (H_SURROGATE(aCh));
str[1] = static_cast<wchar_t> (L_SURROGATE(aCh));
str[2] = 0;
strLen = 2;
}
// set up layout
nsRefPtr<IDWriteTextLayout> fallbackLayout;
hr = dwFactory->CreateTextLayout(str, strLen, mFallbackFormat,
200.0f, 200.0f,
getter_AddRefs(fallbackLayout));
if (FAILED(hr)) {
return nullptr;
}
// call the draw method to invoke the DirectWrite layout functions
// which determine the fallback font
hr = fallbackLayout->Draw(nullptr, mFallbackRenderer, 50.0f, 50.0f);
if (FAILED(hr)) {
return nullptr;
}
gfxFontFamily *family = FindFamily(mFallbackRenderer->FallbackFamilyName());
if (family) {
gfxFontEntry *fontEntry;
bool needsBold; // ignored in the system fallback case
fontEntry = family->FindFontForStyle(*aMatchStyle, needsBold);
if (fontEntry && fontEntry->TestCharacterMap(aCh)) {
*aMatchedFamily = family;
return fontEntry;
}
Telemetry::Accumulate(Telemetry::BAD_FALLBACK_FONT, true);
}
return nullptr;
}
// used to load system-wide font info on off-main thread
class DirectWriteFontInfo : public FontInfoData {
public:
DirectWriteFontInfo(bool aLoadOtherNames,
bool aLoadFaceNames,
bool aLoadCmaps) :
FontInfoData(aLoadOtherNames, aLoadFaceNames, aLoadCmaps)
{}
virtual ~DirectWriteFontInfo() {}
// loads font data for all members of a given family
virtual void LoadFontFamilyData(const nsAString& aFamilyName);
nsRefPtr<IDWriteFontCollection> mSystemFonts;
};
void
DirectWriteFontInfo::LoadFontFamilyData(const nsAString& aFamilyName)
{
// lookup the family
nsAutoTArray<wchar_t, 32> famName;
uint32_t len = aFamilyName.Length();
famName.SetLength(len + 1);
memcpy(famName.Elements(), aFamilyName.BeginReading(), len * sizeof(char16_t));
famName[len] = 0;
HRESULT hr;
BOOL exists = false;
uint32_t index;
hr = mSystemFonts->FindFamilyName(famName.Elements(), &index, &exists);
if (FAILED(hr) || !exists) {
return;
}
nsRefPtr<IDWriteFontFamily> family;
mSystemFonts->GetFontFamily(index, getter_AddRefs(family));
if (!family) {
return;
}
// later versions of DirectWrite support querying the fullname/psname
bool loadFaceNamesUsingDirectWrite = mLoadFaceNames;
for (uint32_t i = 0; i < family->GetFontCount(); i++) {
// get the font
nsRefPtr<IDWriteFont> dwFont;
hr = family->GetFont(i, getter_AddRefs(dwFont));
if (FAILED(hr)) {
// This should never happen.
NS_WARNING("Failed to get existing font from family.");
continue;
}
if (dwFont->GetSimulations() & DWRITE_FONT_SIMULATIONS_OBLIQUE) {
// We don't want these.
continue;
}
mLoadStats.fonts++;
// get the name of the face
nsString fullID(aFamilyName);
nsAutoString fontName;
hr = GetDirectWriteFontName(dwFont, fontName);
if (FAILED(hr)) {
continue;
}
fullID.Append(NS_LITERAL_STRING(" "));
fullID.Append(fontName);
FontFaceData fontData;
bool haveData = true;
nsRefPtr<IDWriteFontFace> dwFontFace;
if (mLoadFaceNames) {
// try to load using DirectWrite first
if (loadFaceNamesUsingDirectWrite) {
hr = GetDirectWriteFaceName(dwFont, PSNAME_ID, fontData.mPostscriptName);
if (FAILED(hr)) {
loadFaceNamesUsingDirectWrite = false;
}
hr = GetDirectWriteFaceName(dwFont, FULLNAME_ID, fontData.mFullName);
if (FAILED(hr)) {
loadFaceNamesUsingDirectWrite = false;
}
}
// if DirectWrite read fails, load directly from name table
if (!loadFaceNamesUsingDirectWrite) {
hr = dwFont->CreateFontFace(getter_AddRefs(dwFontFace));
if (SUCCEEDED(hr)) {
uint32_t kNAME =
NativeEndian::swapToBigEndian(TRUETYPE_TAG('n','a','m','e'));
const char *nameData;
BOOL exists;
void* ctx;
uint32_t nameSize;
hr = dwFontFace->TryGetFontTable(
kNAME,
(const void**)&nameData, &nameSize, &ctx, &exists);
if (SUCCEEDED(hr) && nameData && nameSize > 0) {
gfxFontUtils::ReadCanonicalName(nameData, nameSize,
gfxFontUtils::NAME_ID_FULL,
fontData.mFullName);
gfxFontUtils::ReadCanonicalName(nameData, nameSize,
gfxFontUtils::NAME_ID_POSTSCRIPT,
fontData.mPostscriptName);
dwFontFace->ReleaseFontTable(ctx);
}
}
}
haveData = !fontData.mPostscriptName.IsEmpty() ||
!fontData.mFullName.IsEmpty();
if (haveData) {
mLoadStats.facenames++;
}
}
// cmaps
if (mLoadCmaps) {
if (!dwFontFace) {
hr = dwFont->CreateFontFace(getter_AddRefs(dwFontFace));
if (!SUCCEEDED(hr)) {
continue;
}
}
uint32_t kCMAP =
NativeEndian::swapToBigEndian(TRUETYPE_TAG('c','m','a','p'));
const uint8_t *cmapData;
BOOL exists;
void* ctx;
uint32_t cmapSize;
hr = dwFontFace->TryGetFontTable(kCMAP,
(const void**)&cmapData, &cmapSize, &ctx, &exists);
if (SUCCEEDED(hr)) {
bool cmapLoaded = false;
bool unicodeFont = false, symbolFont = false;
nsRefPtr<gfxCharacterMap> charmap = new gfxCharacterMap();
uint32_t offset;
if (cmapData &&
cmapSize > 0 &&
NS_SUCCEEDED(
gfxFontUtils::ReadCMAP(cmapData, cmapSize, *charmap,
offset, unicodeFont, symbolFont))) {
fontData.mCharacterMap = charmap;
fontData.mUVSOffset = offset;
fontData.mSymbolFont = symbolFont;
cmapLoaded = true;
mLoadStats.cmaps++;
}
dwFontFace->ReleaseFontTable(ctx);
haveData = haveData || cmapLoaded;
}
}
// if have data, load
if (haveData) {
mFontFaceData.Put(fullID, fontData);
}
}
}
already_AddRefed<FontInfoData>
gfxDWriteFontList::CreateFontInfoData()
{
bool loadCmaps = !UsesSystemFallback() ||
gfxPlatform::GetPlatform()->UseCmapsDuringSystemFallback();
nsRefPtr<DirectWriteFontInfo> fi =
new DirectWriteFontInfo(false, NeedFullnamePostscriptNames(), loadCmaps);
gfxWindowsPlatform::GetPlatform()->GetDWriteFactory()->
GetSystemFontCollection(getter_AddRefs(fi->mSystemFonts));
return fi.forget();
}
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