nsresult
GDIFontEntry::ReadCMAP()
{
// skip non-SFNT fonts completely
if (mFontType != GFX_FONT_TYPE_PS_OPENTYPE &&
mFontType != GFX_FONT_TYPE_TT_OPENTYPE &&
mFontType != GFX_FONT_TYPE_TRUETYPE)
{
return NS_ERROR_FAILURE;
}
// attempt this once, if errors occur leave a blank cmap
if (mCmapInitialized)
return NS_OK;
mCmapInitialized = PR_TRUE;
const PRUint32 kCmapTag = TRUETYPE_TAG('c','m','a','p');
AutoFallibleTArray<PRUint8,16384> buffer;
if (GetFontTable(kCmapTag, buffer) != NS_OK)
return NS_ERROR_FAILURE;
PRUint8 *cmap = buffer.Elements();
PRPackedBool unicodeFont = PR_FALSE, symbolFont = PR_FALSE;
nsresult rv = gfxFontUtils::ReadCMAP(cmap, buffer.Length(),
mCharacterMap, mUVSOffset,
unicodeFont, symbolFont);
mSymbolFont = symbolFont;
mHasCmapTable = NS_SUCCEEDED(rv);
#ifdef PR_LOGGING
LOG_FONTLIST(("(fontlist-cmap) name: %s, size: %d\n",
NS_ConvertUTF16toUTF8(mName).get(), mCharacterMap.GetSize()));
#endif
return rv;
}
nsresult
FT2FontEntry::ReadCMAP()
{
if (mCharacterMap) {
return NS_OK;
}
nsRefPtr<gfxCharacterMap> charmap = new gfxCharacterMap();
AutoFallibleTArray<PRUint8,16384> buffer;
nsresult rv = GetFontTable(TTAG_cmap, buffer);
if (NS_SUCCEEDED(rv)) {
bool unicodeFont;
bool symbolFont;
rv = gfxFontUtils::ReadCMAP(buffer.Elements(), buffer.Length(),
*charmap, mUVSOffset,
unicodeFont, symbolFont);
}
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();
}
return rv;
}
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
nsSVGGeometryFrame::SetupCairoStrokeHitGeometry(gfxContext *aContext)
{
SetupCairoStrokeGeometry(aContext);
AutoFallibleTArray<gfxFloat, 10> dashes;
gfxFloat dashOffset;
if (GetStrokeDashData(dashes, &dashOffset)) {
aContext->SetDash(dashes.Elements(), dashes.Length(), dashOffset);
}
}
nsresult
FT2FontEntry::ReadCMAP(FontInfoData *aFontInfoData)
{
if (mCharacterMap) {
return NS_OK;
}
nsRefPtr<gfxCharacterMap> charmap = new gfxCharacterMap();
AutoFallibleTArray<uint8_t,16384> buffer;
nsresult rv = CopyFontTable(TTAG_cmap, buffer);
if (NS_SUCCEEDED(rv)) {
bool unicodeFont;
bool symbolFont;
rv = gfxFontUtils::ReadCMAP(buffer.Elements(), buffer.Length(),
*charmap, mUVSOffset,
unicodeFont, symbolFont);
}
if (NS_SUCCEEDED(rv) && !HasGraphiteTables()) {
// We 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 opentype layout tables
bool hasGSUB = HasFontTable(TRUETYPE_TAG('G','S','U','B'));
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)) {
// We check for GSUB here, as GPOS alone would not be ok.
if (hasGSUB && SupportsScriptInGSUB(sr->tags)) {
continue;
}
charmap->ClearRange(sr->rangeStart, sr->rangeEnd);
}
}
}
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();
}
return rv;
}
nsresult
GDIFontEntry::ReadCMAP()
{
// skip non-SFNT fonts completely
if (mFontType != GFX_FONT_TYPE_PS_OPENTYPE &&
mFontType != GFX_FONT_TYPE_TT_OPENTYPE &&
mFontType != GFX_FONT_TYPE_TRUETYPE)
{
return NS_ERROR_FAILURE;
}
// attempt this once, if errors occur leave a blank cmap
if (mCmapInitialized)
return NS_OK;
mCmapInitialized = true;
const PRUint32 kCmapTag = TRUETYPE_TAG('c','m','a','p');
AutoFallibleTArray<PRUint8,16384> buffer;
if (GetFontTable(kCmapTag, buffer) != NS_OK)
return NS_ERROR_FAILURE;
PRUint8 *cmap = buffer.Elements();
bool unicodeFont = false, symbolFont = false;
nsresult rv = gfxFontUtils::ReadCMAP(cmap, buffer.Length(),
mCharacterMap, mUVSOffset,
unicodeFont, symbolFont);
mSymbolFont = symbolFont;
mHasCmapTable = NS_SUCCEEDED(rv);
#ifdef PR_LOGGING
LOG_FONTLIST(("(fontlist-cmap) name: %s, size: %d\n",
NS_ConvertUTF16toUTF8(mName).get(),
mCharacterMap.SizeOfExcludingThis(moz_malloc_size_of)));
if (LOG_CMAPDATA_ENABLED()) {
char prefix[256];
sprintf(prefix, "(cmapdata) name: %.220s",
NS_ConvertUTF16toUTF8(mName).get());
mCharacterMap.Dump(prefix, eGfxLog_cmapdata);
}
#endif
return rv;
}
nsresult
FT2FontEntry::ReadCMAP()
{
if (mCmapInitialized) {
return NS_OK;
}
// attempt this once, if errors occur leave a blank cmap
mCmapInitialized = true;
AutoFallibleTArray<PRUint8,16384> buffer;
nsresult rv = GetFontTable(TTAG_cmap, buffer);
if (NS_SUCCEEDED(rv)) {
bool unicodeFont;
bool symbolFont;
rv = gfxFontUtils::ReadCMAP(buffer.Elements(), buffer.Length(),
mCharacterMap, mUVSOffset,
unicodeFont, symbolFont);
}
mHasCmapTable = NS_SUCCEEDED(rv);
return rv;
}
gfxFontEntry*
gfxGDIFontList::MakePlatformFont(const gfxProxyFontEntry *aProxyEntry,
const uint8_t *aFontData,
uint32_t aLength)
{
// MakePlatformFont is responsible for deleting the font data with NS_Free
// so we set up a stack object to ensure it is freed even if we take an
// early exit
struct FontDataDeleter {
FontDataDeleter(const uint8_t *aFontData)
: mFontData(aFontData) { }
~FontDataDeleter() { NS_Free((void*)mFontData); }
const uint8_t *mFontData;
};
FontDataDeleter autoDelete(aFontData);
bool hasVertical;
bool isCFF = gfxFontUtils::IsCffFont(aFontData, hasVertical);
nsresult rv;
HANDLE fontRef = nullptr;
bool isEmbedded = false;
nsAutoString uniqueName;
rv = gfxFontUtils::MakeUniqueUserFontName(uniqueName);
if (NS_FAILED(rv))
return nullptr;
// for TTF fonts, first try using the t2embed library if available
if (!isCFF && TTLoadEmbeddedFontPtr && TTDeleteEmbeddedFontPtr) {
// TrueType-style glyphs, use EOT library
AutoFallibleTArray<uint8_t,2048> eotHeader;
uint8_t *buffer;
uint32_t eotlen;
isEmbedded = true;
uint32_t nameLen = NS_MIN<uint32_t>(uniqueName.Length(), LF_FACESIZE - 1);
nsAutoString fontName(Substring(uniqueName, 0, nameLen));
FontDataOverlay overlayNameData = {0, 0, 0};
rv = gfxFontUtils::MakeEOTHeader(aFontData, aLength, &eotHeader,
&overlayNameData);
if (NS_SUCCEEDED(rv)) {
// load in embedded font data
eotlen = eotHeader.Length();
buffer = reinterpret_cast<uint8_t*> (eotHeader.Elements());
int32_t ret;
ULONG privStatus, pulStatus;
EOTFontStreamReader eotReader(aFontData, aLength, buffer, eotlen,
&overlayNameData);
ret = TTLoadEmbeddedFontPtr(&fontRef, TTLOAD_PRIVATE, &privStatus,
LICENSE_PREVIEWPRINT, &pulStatus,
EOTFontStreamReader::ReadEOTStream,
&eotReader,
(PRUnichar*)(fontName.get()), 0, 0);
if (ret != E_NONE) {
fontRef = nullptr;
char buf[256];
sprintf(buf, "font (%s) not loaded using TTLoadEmbeddedFont - error %8.8x",
NS_ConvertUTF16toUTF8(aProxyEntry->Name()).get(), ret);
NS_WARNING(buf);
}
}
}
// load CFF fonts or fonts that failed with t2embed loader
if (fontRef == nullptr) {
// Postscript-style glyphs, swizzle name table, load directly
FallibleTArray<uint8_t> newFontData;
isEmbedded = false;
rv = gfxFontUtils::RenameFont(uniqueName, aFontData, aLength, &newFontData);
if (NS_FAILED(rv))
return nullptr;
DWORD numFonts = 0;
uint8_t *fontData = reinterpret_cast<uint8_t*> (newFontData.Elements());
uint32_t fontLength = newFontData.Length();
NS_ASSERTION(fontData, "null font data after renaming");
// http://msdn.microsoft.com/en-us/library/ms533942(VS.85).aspx
// "A font that is added by AddFontMemResourceEx is always private
// to the process that made the call and is not enumerable."
fontRef = AddFontMemResourceEx(fontData, fontLength,
0 /* reserved */, &numFonts);
if (!fontRef)
return nullptr;
// only load fonts with a single face contained in the data
// AddFontMemResourceEx generates an additional face name for
// vertical text if the font supports vertical writing
if (fontRef && numFonts != 1 + !!hasVertical) {
RemoveFontMemResourceEx(fontRef);
return nullptr;
}
}
// make a new font entry using the unique name
WinUserFontData *winUserFontData = new WinUserFontData(fontRef, isEmbedded);
uint16_t w = (aProxyEntry->mWeight == 0 ? 400 : aProxyEntry->mWeight);
GDIFontEntry *fe = GDIFontEntry::CreateFontEntry(uniqueName,
gfxWindowsFontType(isCFF ? GFX_FONT_TYPE_PS_OPENTYPE : GFX_FONT_TYPE_TRUETYPE) /*type*/,
uint32_t(aProxyEntry->mItalic ? NS_FONT_STYLE_ITALIC : NS_FONT_STYLE_NORMAL),
w, aProxyEntry->mStretch, winUserFontData, false);
if (!fe)
return fe;
fe->mIsUserFont = true;
// Uniscribe doesn't place CFF fonts loaded privately
// via AddFontMemResourceEx on XP/Vista
if (isCFF && gfxWindowsPlatform::WindowsOSVersion()
< gfxWindowsPlatform::kWindows7) {
fe->mForceGDI = true;
}
return fe;
}
nsresult
GDIFontEntry::ReadCMAP()
{
// attempt this once, if errors occur leave a blank cmap
if (mCharacterMap) {
return NS_OK;
}
// skip non-SFNT fonts completely
if (mFontType != GFX_FONT_TYPE_PS_OPENTYPE &&
mFontType != GFX_FONT_TYPE_TT_OPENTYPE &&
mFontType != GFX_FONT_TYPE_TRUETYPE)
{
mCharacterMap = new gfxCharacterMap();
mCharacterMap->mBuildOnTheFly = true;
return NS_ERROR_FAILURE;
}
nsRefPtr<gfxCharacterMap> charmap = new gfxCharacterMap();
uint32_t kCMAP = TRUETYPE_TAG('c','m','a','p');
nsresult rv;
AutoFallibleTArray<uint8_t,16384> cmap;
rv = GetFontTable(kCMAP, cmap);
bool unicodeFont = false, symbolFont = false; // currently ignored
if (NS_SUCCEEDED(rv)) {
rv = gfxFontUtils::ReadCMAP(cmap.Elements(), cmap.Length(),
*charmap, mUVSOffset,
unicodeFont, symbolFont);
}
mSymbolFont = symbolFont;
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();
// For fonts where we failed to read the character map,
// we can take a slow path to look up glyphs character by character
mCharacterMap->mBuildOnTheFly = true;
}
#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;
}
void
gfxMacFont::InitMetrics()
{
mIsValid = false;
::memset(&mMetrics, 0, sizeof(mMetrics));
PRUint32 upem = 0;
// try to get unitsPerEm from sfnt head table, to avoid calling CGFont
// if possible (bug 574368) and because CGFontGetUnitsPerEm does not
// return the true value for OpenType/CFF fonts (it normalizes to 1000,
// which then leads to metrics errors when we read the 'hmtx' table to
// get glyph advances for HarfBuzz, see bug 580863)
const PRUint32 kHeadTableTag = TRUETYPE_TAG('h','e','a','d');
AutoFallibleTArray<PRUint8,sizeof(HeadTable)> headData;
if (NS_SUCCEEDED(mFontEntry->GetFontTable(kHeadTableTag, headData)) &&
headData.Length() >= sizeof(HeadTable)) {
HeadTable *head = reinterpret_cast<HeadTable*>(headData.Elements());
upem = head->unitsPerEm;
} else {
upem = ::CGFontGetUnitsPerEm(mCGFont);
}
if (upem < 16 || upem > 16384) {
// See http://www.microsoft.com/typography/otspec/head.htm
#ifdef DEBUG
char warnBuf[1024];
sprintf(warnBuf, "Bad font metrics for: %s (invalid unitsPerEm value)",
NS_ConvertUTF16toUTF8(mFontEntry->Name()).get());
NS_WARNING(warnBuf);
#endif
return;
}
mAdjustedSize = NS_MAX(mStyle.size, 1.0);
mFUnitsConvFactor = mAdjustedSize / upem;
// For CFF fonts, when scaling values read from CGFont* APIs, we need to
// use CG's idea of unitsPerEm, which may differ from the "true" value in
// the head table of the font (see bug 580863)
gfxFloat cgConvFactor;
if (static_cast<MacOSFontEntry*>(mFontEntry.get())->IsCFF()) {
cgConvFactor = mAdjustedSize / ::CGFontGetUnitsPerEm(mCGFont);
} else {
cgConvFactor = mFUnitsConvFactor;
}
// Try to read 'sfnt' metrics; for local, non-sfnt fonts ONLY, fall back to
// platform APIs. The InitMetrics...() functions will set mIsValid on success.
if (!InitMetricsFromSfntTables(mMetrics) &&
(!mFontEntry->IsUserFont() || mFontEntry->IsLocalUserFont())) {
InitMetricsFromPlatform();
}
if (!mIsValid) {
return;
}
if (mMetrics.xHeight == 0.0) {
mMetrics.xHeight = ::CGFontGetXHeight(mCGFont) * cgConvFactor;
}
if (mStyle.sizeAdjust != 0.0 && mStyle.size > 0.0 &&
mMetrics.xHeight > 0.0) {
// apply font-size-adjust, and recalculate metrics
gfxFloat aspect = mMetrics.xHeight / mStyle.size;
mAdjustedSize = mStyle.GetAdjustedSize(aspect);
mFUnitsConvFactor = mAdjustedSize / upem;
if (static_cast<MacOSFontEntry*>(mFontEntry.get())->IsCFF()) {
cgConvFactor = mAdjustedSize / ::CGFontGetUnitsPerEm(mCGFont);
} else {
cgConvFactor = mFUnitsConvFactor;
}
mMetrics.xHeight = 0.0;
if (!InitMetricsFromSfntTables(mMetrics) &&
(!mFontEntry->IsUserFont() || mFontEntry->IsLocalUserFont())) {
InitMetricsFromPlatform();
}
if (!mIsValid) {
// this shouldn't happen, as we succeeded earlier before applying
// the size-adjust factor! But check anyway, for paranoia's sake.
return;
}
if (mMetrics.xHeight == 0.0) {
mMetrics.xHeight = ::CGFontGetXHeight(mCGFont) * cgConvFactor;
}
}
// Once we reach here, we've got basic metrics and set mIsValid = TRUE;
// there should be no further points of actual failure in InitMetrics().
// (If one is introduced, be sure to reset mIsValid to FALSE!)
mMetrics.emHeight = mAdjustedSize;
// Measure/calculate additional metrics, independent of whether we used
// the tables directly or ATS metrics APIs
CFDataRef cmap =
::CGFontCopyTableForTag(mCGFont, TRUETYPE_TAG('c','m','a','p'));
PRUint32 glyphID;
if (mMetrics.aveCharWidth <= 0) {
mMetrics.aveCharWidth = GetCharWidth(cmap, 'x', &glyphID,
cgConvFactor);
if (glyphID == 0) {
// we didn't find 'x', so use maxAdvance rather than zero
mMetrics.aveCharWidth = mMetrics.maxAdvance;
}
}
if (IsSyntheticBold()) {
mMetrics.aveCharWidth += GetSyntheticBoldOffset();
mMetrics.maxAdvance += GetSyntheticBoldOffset();
}
mMetrics.spaceWidth = GetCharWidth(cmap, ' ', &glyphID, cgConvFactor);
if (glyphID == 0) {
// no space glyph?!
mMetrics.spaceWidth = mMetrics.aveCharWidth;
}
mSpaceGlyph = glyphID;
mMetrics.zeroOrAveCharWidth = GetCharWidth(cmap, '0', &glyphID,
cgConvFactor);
if (glyphID == 0) {
mMetrics.zeroOrAveCharWidth = mMetrics.aveCharWidth;
}
if (cmap) {
::CFRelease(cmap);
}
CalculateDerivedMetrics(mMetrics);
SanitizeMetrics(&mMetrics, mFontEntry->mIsBadUnderlineFont);
#if 0
fprintf (stderr, "Font: %p (%s) size: %f\n", this,
NS_ConvertUTF16toUTF8(GetName()).get(), mStyle.size);
// fprintf (stderr, " fbounds.origin.x %f y %f size.width %f height %f\n", fbounds.origin.x, fbounds.origin.y, fbounds.size.width, fbounds.size.height);
fprintf (stderr, " emHeight: %f emAscent: %f emDescent: %f\n", mMetrics.emHeight, mMetrics.emAscent, mMetrics.emDescent);
fprintf (stderr, " maxAscent: %f maxDescent: %f maxAdvance: %f\n", mMetrics.maxAscent, mMetrics.maxDescent, mMetrics.maxAdvance);
fprintf (stderr, " internalLeading: %f externalLeading: %f\n", mMetrics.internalLeading, mMetrics.externalLeading);
fprintf (stderr, " spaceWidth: %f aveCharWidth: %f xHeight: %f\n", mMetrics.spaceWidth, mMetrics.aveCharWidth, mMetrics.xHeight);
fprintf (stderr, " uOff: %f uSize: %f stOff: %f stSize: %f supOff: %f subOff: %f\n", mMetrics.underlineOffset, mMetrics.underlineSize, mMetrics.strikeoutOffset, mMetrics.strikeoutSize, mMetrics.superscriptOffset, mMetrics.subscriptOffset);
#endif
}
nsresult
gfxDWriteFontEntry::ReadCMAP()
{
HRESULT hr;
nsresult rv;
// attempt this once, if errors occur leave a blank cmap
if (mCmapInitialized)
return NS_OK;
mCmapInitialized = PR_TRUE;
// if loading via GDI, just use GetFontTable
if (mFont && gfxDWriteFontList::PlatformFontList()->UseGDIFontTableAccess()) {
const PRUint32 kCmapTag = TRUETYPE_TAG('c','m','a','p');
AutoFallibleTArray<PRUint8,16384> buffer;
if (GetFontTable(kCmapTag, buffer) != NS_OK)
return NS_ERROR_FAILURE;
PRUint8 *cmap = buffer.Elements();
PRPackedBool unicodeFont = PR_FALSE, symbolFont = PR_FALSE;
rv = gfxFontUtils::ReadCMAP(cmap, buffer.Length(),
mCharacterMap, mUVSOffset,
unicodeFont, symbolFont);
mHasCmapTable = NS_SUCCEEDED(rv);
return rv;
}
// loading using dwrite, don't use GetFontTable to avoid copy
nsRefPtr<IDWriteFontFace> fontFace;
rv = CreateFontFace(getter_AddRefs(fontFace));
if (NS_FAILED(rv)) {
return rv;
}
PRUint8 *tableData;
PRUint32 len;
void *tableContext = NULL;
BOOL exists;
hr = fontFace->TryGetFontTable(DWRITE_MAKE_OPENTYPE_TAG('c', 'm', 'a', 'p'),
(const void**)&tableData,
&len,
&tableContext,
&exists);
if (FAILED(hr)) {
return NS_ERROR_FAILURE;
}
PRPackedBool isSymbol = fontFace->IsSymbolFont();
PRPackedBool isUnicode = PR_TRUE;
if (exists) {
rv = gfxFontUtils::ReadCMAP(tableData,
len,
mCharacterMap,
mUVSOffset,
isUnicode,
isSymbol);
}
fontFace->ReleaseFontTable(tableContext);
#ifdef PR_LOGGING
LOG_FONTLIST(("(fontlist-cmap) name: %s, size: %d\n",
NS_ConvertUTF16toUTF8(mName).get(), mCharacterMap.GetSize()));
#endif
mHasCmapTable = NS_SUCCEEDED(rv);
return rv;
}
nsresult
gfxDWriteFontEntry::ReadCMAP()
{
HRESULT hr;
nsresult rv;
// attempt this once, if errors occur leave a blank cmap
if (mCharacterMap) {
return NS_OK;
}
nsRefPtr<gfxCharacterMap> charmap = new gfxCharacterMap();
// if loading via GDI, just use GetFontTable
if (mFont && gfxDWriteFontList::PlatformFontList()->UseGDIFontTableAccess()) {
uint32_t kCMAP = TRUETYPE_TAG('c','m','a','p');
AutoFallibleTArray<uint8_t,16384> cmap;
rv = GetFontTable(kCMAP, cmap);
bool unicodeFont = false, symbolFont = false; // currently ignored
if (NS_SUCCEEDED(rv)) {
rv = gfxFontUtils::ReadCMAP(cmap.Elements(), cmap.Length(),
*charmap, mUVSOffset,
unicodeFont, symbolFont);
}
} else {
// loading using dwrite, don't use GetFontTable to avoid copy
nsRefPtr<IDWriteFontFace> fontFace;
rv = CreateFontFace(getter_AddRefs(fontFace));
if (NS_SUCCEEDED(rv)) {
const uint32_t kCmapTag = DWRITE_MAKE_OPENTYPE_TAG('c', 'm', 'a', 'p');
uint8_t *tableData;
uint32_t len;
void *tableContext = NULL;
BOOL exists;
hr = fontFace->TryGetFontTable(kCmapTag, (const void**)&tableData,
&len, &tableContext, &exists);
if (SUCCEEDED(hr)) {
bool isSymbol = fontFace->IsSymbolFont();
bool isUnicode = true;
if (exists) {
rv = gfxFontUtils::ReadCMAP(tableData, len, *charmap,
mUVSOffset, isUnicode,
isSymbol);
}
fontFace->ReleaseFontTable(tableContext);
} else {
rv = NS_ERROR_FAILURE;
}
}
}
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();
}
#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;
}
