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gecko-dev/gfx/thebes/gfxGDIFontList.cpp

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Corporation code.
*
* The Initial Developer of the Original Code is Mozilla Corporation.
* Portions created by the Initial Developer are Copyright (C) 2009
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Stuart Parmenter <stuart@mozilla.com>
* Masayuki Nakano <masayuki@d-toybox.com>
* Mats Palmgren <mats.palmgren@bredband.net>
* John Daggett <jdaggett@mozilla.com>
* Jonathan Kew <jfkthame@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifdef MOZ_LOGGING
#define FORCE_PR_LOG /* Allow logging in the release build */
#endif
#include "prlog.h"
#include "gfxGDIFontList.h"
#include "gfxWindowsPlatform.h"
#include "gfxUserFontSet.h"
#include "gfxFontUtils.h"
#include "gfxGDIFont.h"
#include "nsServiceManagerUtils.h"
#include "nsTArray.h"
#include "nsUnicharUtils.h"
#include "nsDirectoryServiceUtils.h"
#include "nsDirectoryServiceDefs.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsISimpleEnumerator.h"
#include "nsIWindowsRegKey.h"
#include <usp10.h>
#define ROUND(x) floor((x) + 0.5)
#ifndef CLEARTYPE_QUALITY
#define CLEARTYPE_QUALITY 5
#endif
#ifdef PR_LOGGING
#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)
#endif // PR_LOGGING
// font info loader constants
// avoid doing this during startup even on slow machines but try to start
// it soon enough so that system fallback doesn't happen first
static const PRUint32 kDelayBeforeLoadingFonts = 120 * 1000; // 2 minutes after init
static const PRUint32 kIntervalBetweenLoadingFonts = 2000; // every 2 seconds until complete
static __inline void
BuildKeyNameFromFontName(nsAString &aName)
{
if (aName.Length() >= LF_FACESIZE)
aName.Truncate(LF_FACESIZE - 1);
ToLowerCase(aName);
}
// Implementation of gfxPlatformFontList for Win32 GDI,
// using GDI font enumeration APIs to get the list of fonts
// from t2embapi.h, included in Platform SDK 6.1 but not 6.0
#ifndef __t2embapi__
#define TTLOAD_PRIVATE 0x00000001
#define LICENSE_PREVIEWPRINT 0x0004
#define E_NONE 0x0000L
typedef unsigned long( WINAPIV *READEMBEDPROC ) ( void*, void*, const unsigned long );
typedef struct
{
unsigned short usStructSize; // size in bytes of structure client should set to sizeof(TTLOADINFO)
unsigned short usRefStrSize; // size in wide characters of pusRefStr including NULL terminator
unsigned short *pusRefStr; // reference or actual string.
}TTLOADINFO;
LONG WINAPI TTLoadEmbeddedFont
(
HANDLE* phFontReference, // on completion, contains handle to identify embedded font installed
// on system
ULONG ulFlags, // flags specifying the request
ULONG* pulPrivStatus, // on completion, contains the embedding status
ULONG ulPrivs, // allows for the reduction of licensing privileges
ULONG* pulStatus, // on completion, may contain status flags for request
READEMBEDPROC lpfnReadFromStream, // callback function for doc/disk reads
LPVOID lpvReadStream, // the input stream tokin
LPWSTR szWinFamilyName, // the new 16 bit windows family name can be NULL
LPSTR szMacFamilyName, // the new 8 bit mac family name can be NULL
TTLOADINFO* pTTLoadInfo // optional security
);
#endif // __t2embapi__
typedef LONG( WINAPI *TTLoadEmbeddedFontProc ) (HANDLE* phFontReference, ULONG ulFlags, ULONG* pulPrivStatus, ULONG ulPrivs, ULONG* pulStatus,
READEMBEDPROC lpfnReadFromStream, LPVOID lpvReadStream, LPWSTR szWinFamilyName,
LPSTR szMacFamilyName, TTLOADINFO* pTTLoadInfo);
typedef LONG( WINAPI *TTDeleteEmbeddedFontProc ) (HANDLE hFontReference, ULONG ulFlags, ULONG* pulStatus);
static TTLoadEmbeddedFontProc TTLoadEmbeddedFontPtr = nsnull;
static TTDeleteEmbeddedFontProc TTDeleteEmbeddedFontPtr = nsnull;
class WinUserFontData : public gfxUserFontData {
public:
WinUserFontData(HANDLE aFontRef, PRBool aIsEmbedded)
: mFontRef(aFontRef), mIsEmbedded(aIsEmbedded)
{ }
virtual ~WinUserFontData()
{
if (mIsEmbedded) {
ULONG pulStatus;
LONG err;
err = TTDeleteEmbeddedFontPtr(mFontRef, 0, &pulStatus);
#if DEBUG
if (err != E_NONE) {
char buf[256];
sprintf(buf, "error deleting embedded font handle (%p) - TTDeleteEmbeddedFont returned %8.8x", mFontRef, err);
NS_ASSERTION(err == E_NONE, buf);
}
#endif
} else {
BOOL success;
success = RemoveFontMemResourceEx(mFontRef);
#if DEBUG
if (!success) {
char buf[256];
sprintf(buf, "error deleting font handle (%p) - RemoveFontMemResourceEx failed", mFontRef);
NS_ASSERTION(success, buf);
}
#endif
}
}
HANDLE mFontRef;
PRPackedBool mIsEmbedded;
};
BYTE
FontTypeToOutPrecision(PRUint8 fontType)
{
BYTE ret;
switch (fontType) {
case GFX_FONT_TYPE_TT_OPENTYPE:
case GFX_FONT_TYPE_TRUETYPE:
ret = OUT_TT_ONLY_PRECIS;
break;
case GFX_FONT_TYPE_PS_OPENTYPE:
ret = OUT_PS_ONLY_PRECIS;
break;
case GFX_FONT_TYPE_TYPE1:
ret = OUT_OUTLINE_PRECIS;
break;
case GFX_FONT_TYPE_RASTER:
ret = OUT_RASTER_PRECIS;
break;
case GFX_FONT_TYPE_DEVICE:
ret = OUT_DEVICE_PRECIS;
break;
default:
ret = OUT_DEFAULT_PRECIS;
}
return ret;
}
/***************************************************************
*
* GDIFontEntry
*
*/
GDIFontEntry::GDIFontEntry(const nsAString& aFaceName, gfxWindowsFontType aFontType,
PRBool aItalic, PRUint16 aWeight, gfxUserFontData *aUserFontData) :
gfxFontEntry(aFaceName),
mWindowsFamily(0), mWindowsPitch(0),
mFontType(aFontType),
mForceGDI(PR_FALSE), mUnknownCMAP(PR_FALSE),
mUnicodeFont(PR_FALSE),
mCharset(), mUnicodeRanges()
{
mUserFontData = aUserFontData;
mItalic = aItalic;
mWeight = aWeight;
if (IsType1())
mForceGDI = PR_TRUE;
mIsUserFont = aUserFontData != nsnull;
InitLogFont(aFaceName, aFontType);
}
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);
mUnicodeFont = unicodeFont;
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;
}
gfxFont *
GDIFontEntry::CreateFontInstance(const gfxFontStyle* aFontStyle, PRBool aNeedsBold)
{
PRBool isXP = (gfxWindowsPlatform::WindowsOSVersion()
< gfxWindowsPlatform::kWindowsVista);
PRBool useClearType = isXP && !aFontStyle->systemFont &&
(gfxWindowsPlatform::GetPlatform()->UseClearTypeAlways() ||
(mIsUserFont && !mIsLocalUserFont &&
gfxWindowsPlatform::GetPlatform()->UseClearTypeForDownloadableFonts()));
return new gfxGDIFont(this, aFontStyle, aNeedsBold,
(useClearType ? gfxFont::kAntialiasSubpixel
: gfxFont::kAntialiasDefault));
}
nsresult
GDIFontEntry::GetFontTable(PRUint32 aTableTag,
FallibleTArray<PRUint8>& aBuffer)
{
if (!IsTrueType()) {
return NS_ERROR_FAILURE;
}
AutoDC dc;
AutoSelectFont font(dc.GetDC(), &mLogFont);
if (font.IsValid()) {
PRInt32 tableSize =
::GetFontData(dc.GetDC(), NS_SWAP32(aTableTag), 0, NULL, NULL);
if (tableSize != GDI_ERROR) {
if (aBuffer.SetLength(tableSize)) {
::GetFontData(dc.GetDC(), NS_SWAP32(aTableTag), 0,
aBuffer.Elements(), tableSize);
return NS_OK;
}
return NS_ERROR_OUT_OF_MEMORY;
}
}
return NS_ERROR_FAILURE;
}
void
GDIFontEntry::FillLogFont(LOGFONTW *aLogFont, PRBool aItalic,
PRUint16 aWeight, gfxFloat aSize,
PRBool aUseCleartype)
{
memcpy(aLogFont, &mLogFont, sizeof(LOGFONTW));
aLogFont->lfHeight = (LONG)-ROUND(aSize);
if (aLogFont->lfHeight == 0)
aLogFont->lfHeight = -1;
// always force lfItalic if we want it. Font selection code will
// do its best to give us an italic font entry, but if no face exists
// it may give us a regular one based on weight. Windows should
// do fake italic for us in that case.
aLogFont->lfItalic = aItalic;
aLogFont->lfWeight = aWeight;
aLogFont->lfQuality = (aUseCleartype ? CLEARTYPE_QUALITY : DEFAULT_QUALITY);
}
#define MISSING_GLYPH 0x1F
PRBool
GDIFontEntry::TestCharacterMap(PRUint32 aCh)
{
if (ReadCMAP() != NS_OK) {
// Type1 fonts aren't necessarily Unicode but
// this is the best guess we can make here
mUnicodeFont = IsType1();
// For fonts where we failed to read the character map,
// we can take a slow path to look up glyphs character by character
mUnknownCMAP = PR_TRUE;
}
if (mUnknownCMAP) {
if (aCh > 0xFFFF)
return PR_FALSE;
// previous code was using the group style
gfxFontStyle fakeStyle;
if (mItalic)
fakeStyle.style = FONT_STYLE_ITALIC;
fakeStyle.weight = mWeight * 100;
nsRefPtr<gfxFont> tempFont = FindOrMakeFont(&fakeStyle, PR_FALSE);
if (!tempFont || !tempFont->Valid())
return PR_FALSE;
gfxGDIFont *font = static_cast<gfxGDIFont*>(tempFont.get());
HDC dc = GetDC((HWND)nsnull);
SetGraphicsMode(dc, GM_ADVANCED);
HFONT hfont = font->GetHFONT();
HFONT oldFont = (HFONT)SelectObject(dc, hfont);
PRUnichar str[1] = { (PRUnichar)aCh };
WORD glyph[1];
PRBool hasGlyph = PR_FALSE;
// Bug 573038 - in some cases GetGlyphIndicesW returns 0xFFFF for a
// missing glyph or 0x1F in other cases to indicate the "invalid"
// glyph. Map both cases to "not found"
if (IsType1() || mForceGDI) {
// Type1 fonts and uniscribe APIs don't get along.
// ScriptGetCMap will return E_HANDLE
DWORD ret = GetGlyphIndicesW(dc, str, 1,
glyph, GGI_MARK_NONEXISTING_GLYPHS);
if (ret != GDI_ERROR
&& glyph[0] != 0xFFFF
&& glyph[0] != MISSING_GLYPH)
{
hasGlyph = PR_TRUE;
}
} else {
// ScriptGetCMap works better than GetGlyphIndicesW
// for things like bitmap/vector fonts
SCRIPT_CACHE sc = NULL;
HRESULT rv = ScriptGetCMap(dc, &sc, str, 1, 0, glyph);
if (rv == S_OK)
hasGlyph = PR_TRUE;
}
SelectObject(dc, oldFont);
ReleaseDC(NULL, dc);
if (hasGlyph) {
mCharacterMap.set(aCh);
return PR_TRUE;
}
} else {
// font had a cmap so simply check that
return mCharacterMap.test(aCh);
}
return PR_FALSE;
}
void
GDIFontEntry::InitLogFont(const nsAString& aName,
gfxWindowsFontType aFontType)
{
#define CLIP_TURNOFF_FONTASSOCIATION 0x40
mLogFont.lfHeight = -1;
// Fill in logFont structure
mLogFont.lfWidth = 0;
mLogFont.lfEscapement = 0;
mLogFont.lfOrientation = 0;
mLogFont.lfUnderline = FALSE;
mLogFont.lfStrikeOut = FALSE;
mLogFont.lfCharSet = DEFAULT_CHARSET;
mLogFont.lfOutPrecision = FontTypeToOutPrecision(aFontType);
mLogFont.lfClipPrecision = CLIP_TURNOFF_FONTASSOCIATION;
mLogFont.lfQuality = DEFAULT_QUALITY;
mLogFont.lfPitchAndFamily = DEFAULT_PITCH | FF_DONTCARE;
// always force lfItalic if we want it. Font selection code will
// do its best to give us an italic font entry, but if no face exists
// it may give us a regular one based on weight. Windows should
// do fake italic for us in that case.
mLogFont.lfItalic = mItalic;
mLogFont.lfWeight = mWeight;
int len = PR_MIN(aName.Length(), LF_FACESIZE - 1);
memcpy(&mLogFont.lfFaceName, nsPromiseFlatString(aName).get(), len * 2);
mLogFont.lfFaceName[len] = '\0';
}
GDIFontEntry*
GDIFontEntry::CreateFontEntry(const nsAString& aName, gfxWindowsFontType aFontType,
PRBool aItalic, PRUint16 aWeight,
gfxUserFontData* aUserFontData)
{
// jtdfix - need to set charset, unicode ranges, pitch/family
GDIFontEntry *fe = new GDIFontEntry(aName, aFontType, aItalic, aWeight,
aUserFontData);
// ReadCMAP may change the values of mUnicodeFont and mSymbolFont
if (NS_FAILED(fe->ReadCMAP())) {
// Type1 fonts aren't necessarily Unicode but
// this is the best guess we can make here
if (fe->IsType1())
fe->mUnicodeFont = PR_TRUE;
else
fe->mUnicodeFont = PR_FALSE;
// For fonts where we failed to read the character map,
// we can take a slow path to look up glyphs character by character
fe->mUnknownCMAP = PR_TRUE;
}
return fe;
}
/***************************************************************
*
* GDIFontFamily
*
*/
int CALLBACK
GDIFontFamily::FamilyAddStylesProc(const ENUMLOGFONTEXW *lpelfe,
const NEWTEXTMETRICEXW *nmetrics,
DWORD fontType, LPARAM data)
{
const NEWTEXTMETRICW& metrics = nmetrics->ntmTm;
LOGFONTW logFont = lpelfe->elfLogFont;
GDIFontFamily *ff = reinterpret_cast<GDIFontFamily*>(data);
// Some fonts claim to support things > 900, but we don't so clamp the sizes
logFont.lfWeight = PR_MAX(PR_MIN(logFont.lfWeight, 900), 100);
gfxWindowsFontType feType = GDIFontEntry::DetermineFontType(metrics, fontType);
GDIFontEntry *fe = nsnull;
for (PRUint32 i = 0; i < ff->mAvailableFonts.Length(); ++i) {
fe = static_cast<GDIFontEntry*>(ff->mAvailableFonts[i].get());
if (feType > fe->mFontType) {
// if the new type is better than the old one, remove the old entries
ff->mAvailableFonts.RemoveElementAt(i);
--i;
} else if (feType < fe->mFontType) {
// otherwise if the new type is worse, skip it
return 1;
}
}
for (PRUint32 i = 0; i < ff->mAvailableFonts.Length(); ++i) {
fe = static_cast<GDIFontEntry*>(ff->mAvailableFonts[i].get());
// check if we already know about this face
if (fe->mWeight == logFont.lfWeight &&
fe->mItalic == (logFont.lfItalic == 0xFF)) {
// update the charset bit here since this could be different
fe->mCharset.set(metrics.tmCharSet);
return 1;
}
}
fe = GDIFontEntry::CreateFontEntry(nsDependentString(lpelfe->elfFullName), feType, (logFont.lfItalic == 0xFF),
(PRUint16) (logFont.lfWeight), nsnull);
if (!fe)
return 1;
ff->AddFontEntry(fe);
// mark the charset bit
fe->mCharset.set(metrics.tmCharSet);
fe->mWindowsFamily = logFont.lfPitchAndFamily & 0xF0;
fe->mWindowsPitch = logFont.lfPitchAndFamily & 0x0F;
if (nmetrics->ntmFontSig.fsUsb[0] != 0x00000000 &&
nmetrics->ntmFontSig.fsUsb[1] != 0x00000000 &&
nmetrics->ntmFontSig.fsUsb[2] != 0x00000000 &&
nmetrics->ntmFontSig.fsUsb[3] != 0x00000000) {
// set the unicode ranges
PRUint32 x = 0;
for (PRUint32 i = 0; i < 4; ++i) {
DWORD range = nmetrics->ntmFontSig.fsUsb[i];
for (PRUint32 k = 0; k < 32; ++k) {
fe->mUnicodeRanges.set(x++, (range & (1 << k)) != 0);
}
}
}
#ifdef PR_LOGGING
if (LOG_FONTLIST_ENABLED()) {
LOG_FONTLIST(("(fontlist) added (%s) to family (%s)"
" with style: %s weight: %d stretch: %d",
NS_ConvertUTF16toUTF8(fe->Name()).get(),
NS_ConvertUTF16toUTF8(ff->Name()).get(),
(logFont.lfItalic == 0xff) ? "italic" : "normal",
logFont.lfWeight, fe->Stretch()));
}
#endif
return 1;
}
void
GDIFontFamily::FindStyleVariations()
{
if (mHasStyles)
return;
mHasStyles = PR_TRUE;
HDC hdc = GetDC(nsnull);
SetGraphicsMode(hdc, GM_ADVANCED);
LOGFONTW logFont;
memset(&logFont, 0, sizeof(LOGFONTW));
logFont.lfCharSet = DEFAULT_CHARSET;
logFont.lfPitchAndFamily = 0;
PRUint32 l = PR_MIN(mName.Length(), LF_FACESIZE - 1);
memcpy(logFont.lfFaceName,
nsPromiseFlatString(mName).get(),
l * sizeof(PRUnichar));
logFont.lfFaceName[l] = 0;
EnumFontFamiliesExW(hdc, &logFont,
(FONTENUMPROCW)GDIFontFamily::FamilyAddStylesProc,
(LPARAM)this, 0);
#ifdef PR_LOGGING
if (LOG_FONTLIST_ENABLED() && mAvailableFonts.Length() == 0) {
LOG_FONTLIST(("(fontlist) no styles available in family \"%s\"",
NS_ConvertUTF16toUTF8(mName).get()));
}
#endif
ReleaseDC(nsnull, hdc);
if (mIsBadUnderlineFamily)
SetBadUnderlineFonts();
}
/***************************************************************
*
* gfxGDIFontList
*
*/
gfxGDIFontList::gfxGDIFontList()
{
mFontSubstitutes.Init(50);
InitializeFontEmbeddingProcs();
}
static void
RemoveCharsetFromFontSubstitute(nsAString &aName)
{
PRInt32 comma = aName.FindChar(PRUnichar(','));
if (comma >= 0)
aName.Truncate(comma);
}
#define MAX_VALUE_NAME 512
#define MAX_VALUE_DATA 512
nsresult
gfxGDIFontList::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 = sizeof(aliasName);
actualName[0] = 0;
lenActual = sizeof(actualName);
rv = RegEnumValueW(hKey, i, aliasName, &lenAlias, NULL, &valueType,
(LPBYTE)actualName, &lenActual);
if (rv != ERROR_SUCCESS || valueType != REG_SZ || lenAlias == 0) {
continue;
}
if (aliasName[0] == WCHAR('@')) {
continue;
}
nsAutoString substituteName((PRUnichar*) aliasName);
nsAutoString actualFontName((PRUnichar*) 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;
}
nsresult
gfxGDIFontList::InitFontList()
{
gfxFontCache *fc = gfxFontCache::GetCache();
if (fc)
fc->AgeAllGenerations();
// reset font lists
gfxPlatformFontList::InitFontList();
mFontSubstitutes.Clear();
mNonExistingFonts.Clear();
// iterate over available families
LOGFONTW logfont;
memset(&logfont, 0, sizeof(logfont));
logfont.lfCharSet = DEFAULT_CHARSET;
AutoDC hdc;
int result = EnumFontFamiliesExW(hdc.GetDC(), &logfont,
(FONTENUMPROCW)&EnumFontFamExProc,
0, 0);
GetFontSubstitutes();
StartLoader(kDelayBeforeLoadingFonts, kIntervalBetweenLoadingFonts);
return NS_OK;
}
int CALLBACK
gfxGDIFontList::EnumFontFamExProc(ENUMLOGFONTEXW *lpelfe,
NEWTEXTMETRICEXW *lpntme,
DWORD fontType,
LPARAM lParam)
{
const LOGFONTW& lf = lpelfe->elfLogFont;
if (lf.lfFaceName[0] == '@') {
return 1;
}
nsAutoString name(lf.lfFaceName);
BuildKeyNameFromFontName(name);
gfxGDIFontList *fontList = PlatformFontList();
if (!fontList->mFontFamilies.GetWeak(name)) {
nsDependentString faceName(lf.lfFaceName);
nsRefPtr<gfxFontFamily> family = new GDIFontFamily(faceName);
fontList->mFontFamilies.Put(name, family);
// if locale is such that CJK font names are the default coming from
// GDI, then if a family name is non-ASCII immediately read in other
// family names. This assures that MS Gothic, MS Mincho are all found
// before lookups begin.
if (!IsASCII(faceName)) {
family->ReadOtherFamilyNames(gfxPlatformFontList::PlatformFontList());
}
if (fontList->mBadUnderlineFamilyNames.Contains(name))
family->SetBadUnderlineFamily();
}
return 1;
}
gfxFontEntry*
gfxGDIFontList::LookupLocalFont(const gfxProxyFontEntry *aProxyEntry,
const nsAString& aFullname)
{
PRBool found;
gfxFontEntry *lookup;
// initialize name lookup tables if needed
if (!mFaceNamesInitialized) {
InitFaceNameLists();
}
// lookup in name lookup tables, return null if not found
if (!(lookup = mPostscriptNames.GetWeak(aFullname, &found)) &&
!(lookup = mFullnames.GetWeak(aFullname, &found)))
{
return nsnull;
}
// create a new font entry with the proxy entry style characteristics
PRUint16 w = (aProxyEntry->mWeight == 0 ? 400 : aProxyEntry->mWeight);
PRBool isCFF = PR_FALSE; // jtdfix -- need to determine this
// use the face name from the lookup font entry, which will be the localized
// face name which GDI mapping tables use (e.g. with the system locale set to
// Dutch, a fullname of 'Arial Bold' will find a font entry with the face name
// 'Arial Vet' which can be used as a key in GDI font lookups).
gfxFontEntry *fe = GDIFontEntry::CreateFontEntry(lookup->Name(),
gfxWindowsFontType(isCFF ? GFX_FONT_TYPE_PS_OPENTYPE : GFX_FONT_TYPE_TRUETYPE) /*type*/,
PRUint32(aProxyEntry->mItalic ? FONT_STYLE_ITALIC : FONT_STYLE_NORMAL),
w, nsnull);
if (!fe)
return nsnull;
fe->mIsUserFont = PR_TRUE;
fe->mIsLocalUserFont = PR_TRUE;
return fe;
}
void gfxGDIFontList::InitializeFontEmbeddingProcs()
{
HMODULE fontlib = LoadLibraryW(L"t2embed.dll");
if (!fontlib)
return;
TTLoadEmbeddedFontPtr = (TTLoadEmbeddedFontProc) GetProcAddress(fontlib, "TTLoadEmbeddedFont");
TTDeleteEmbeddedFontPtr = (TTDeleteEmbeddedFontProc) GetProcAddress(fontlib, "TTDeleteEmbeddedFont");
}
// used to control stream read by Windows TTLoadEmbeddedFont API
class EOTFontStreamReader {
public:
EOTFontStreamReader(const PRUint8 *aFontData, PRUint32 aLength, PRUint8 *aEOTHeader,
PRUint32 aEOTHeaderLen, FontDataOverlay *aNameOverlay)
: mCurrentChunk(0), mChunkOffset(0)
{
NS_ASSERTION(aFontData, "null font data ptr passed in");
NS_ASSERTION(aEOTHeader, "null EOT header ptr passed in");
NS_ASSERTION(aNameOverlay, "null name overlay struct passed in");
if (aNameOverlay->overlaySrc) {
mNumChunks = 4;
// 0 : EOT header
mDataChunks[0].mData = aEOTHeader;
mDataChunks[0].mLength = aEOTHeaderLen;
// 1 : start of font data to overlayDest
mDataChunks[1].mData = aFontData;
mDataChunks[1].mLength = aNameOverlay->overlayDest;
// 2 : overlay data
mDataChunks[2].mData = aFontData + aNameOverlay->overlaySrc;
mDataChunks[2].mLength = aNameOverlay->overlaySrcLen;
// 3 : rest of font data
mDataChunks[3].mData = aFontData + aNameOverlay->overlayDest + aNameOverlay->overlaySrcLen;
mDataChunks[3].mLength = aLength - aNameOverlay->overlayDest - aNameOverlay->overlaySrcLen;
} else {
mNumChunks = 2;
// 0 : EOT header
mDataChunks[0].mData = aEOTHeader;
mDataChunks[0].mLength = aEOTHeaderLen;
// 1 : font data
mDataChunks[1].mData = aFontData;
mDataChunks[1].mLength = aLength;
}
}
~EOTFontStreamReader()
{
}
struct FontDataChunk {
const PRUint8 *mData;
PRUint32 mLength;
};
PRUint32 mNumChunks;
FontDataChunk mDataChunks[4];
PRUint32 mCurrentChunk;
PRUint32 mChunkOffset;
unsigned long Read(void *outBuffer, const unsigned long aBytesToRead)
{
PRUint32 bytesLeft = aBytesToRead; // bytes left in the out buffer
PRUint8 *out = static_cast<PRUint8*> (outBuffer);
while (mCurrentChunk < mNumChunks && bytesLeft) {
FontDataChunk& currentChunk = mDataChunks[mCurrentChunk];
PRUint32 bytesToCopy = PR_MIN(bytesLeft,
currentChunk.mLength - mChunkOffset);
memcpy(out, currentChunk.mData + mChunkOffset, bytesToCopy);
bytesLeft -= bytesToCopy;
mChunkOffset += bytesToCopy;
out += bytesToCopy;
NS_ASSERTION(mChunkOffset <= currentChunk.mLength, "oops, buffer overrun");
if (mChunkOffset == currentChunk.mLength) {
mCurrentChunk++;
mChunkOffset = 0;
}
}
return aBytesToRead - bytesLeft;
}
static unsigned long ReadEOTStream(void *aReadStream, void *outBuffer,
const unsigned long aBytesToRead)
{
EOTFontStreamReader *eotReader =
static_cast<EOTFontStreamReader*> (aReadStream);
return eotReader->Read(outBuffer, aBytesToRead);
}
};
gfxFontEntry*
gfxGDIFontList::MakePlatformFont(const gfxProxyFontEntry *aProxyEntry,
const PRUint8 *aFontData,
PRUint32 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 PRUint8 *aFontData)
: mFontData(aFontData) { }
~FontDataDeleter() { NS_Free((void*)mFontData); }
const PRUint8 *mFontData;
};
FontDataDeleter autoDelete(aFontData);
// if calls aren't available, bail
if (!TTLoadEmbeddedFontPtr || !TTDeleteEmbeddedFontPtr)
return nsnull;
PRBool isCFF = gfxFontUtils::IsCffFont(aFontData);
nsresult rv;
HANDLE fontRef = nsnull;
PRBool isEmbedded = PR_FALSE;
nsAutoString uniqueName;
rv = gfxFontUtils::MakeUniqueUserFontName(uniqueName);
if (NS_FAILED(rv))
return nsnull;
// for TTF fonts, first try using the t2embed library
if (!isCFF) {
// TrueType-style glyphs, use EOT library
AutoFallibleTArray<PRUint8,2048> eotHeader;
PRUint8 *buffer;
PRUint32 eotlen;
isEmbedded = PR_TRUE;
PRUint32 nameLen = PR_MIN(uniqueName.Length(), LF_FACESIZE - 1);
nsPromiseFlatString 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<PRUint8*> (eotHeader.Elements());
PRInt32 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 = nsnull;
char buf[256];
sprintf(buf, "font (%s) not loaded using TTLoadEmbeddedFont - error %8.8x", NS_ConvertUTF16toUTF8(aProxyEntry->FamilyName()).get(), ret);
NS_WARNING(buf);
}
}
}
// load CFF fonts or fonts that failed with t2embed loader
if (fontRef == nsnull) {
// Postscript-style glyphs, swizzle name table, load directly
FallibleTArray<PRUint8> newFontData;
isEmbedded = PR_FALSE;
rv = gfxFontUtils::RenameFont(uniqueName, aFontData, aLength, &newFontData);
if (NS_FAILED(rv))
return nsnull;
DWORD numFonts = 0;
PRUint8 *fontData = reinterpret_cast<PRUint8*> (newFontData.Elements());
PRUint32 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 nsnull;
// only load fonts with a single face contained in the data
if (fontRef && numFonts != 1) {
RemoveFontMemResourceEx(fontRef);
return nsnull;
}
}
// make a new font entry using the unique name
WinUserFontData *winUserFontData = new WinUserFontData(fontRef, isEmbedded);
PRUint16 w = (aProxyEntry->mWeight == 0 ? 400 : aProxyEntry->mWeight);
GDIFontEntry *fe = GDIFontEntry::CreateFontEntry(uniqueName,
gfxWindowsFontType(isCFF ? GFX_FONT_TYPE_PS_OPENTYPE : GFX_FONT_TYPE_TRUETYPE) /*type*/,
PRUint32(aProxyEntry->mItalic ? FONT_STYLE_ITALIC : FONT_STYLE_NORMAL),
w, winUserFontData);
if (!fe)
return fe;
fe->mIsUserFont = PR_TRUE;
// Uniscribe doesn't place CFF fonts loaded privately
// via AddFontMemResourceEx on XP/Vista
if (isCFF && gfxWindowsPlatform::WindowsOSVersion()
< gfxWindowsPlatform::kWindows7) {
fe->mForceGDI = PR_TRUE;
}
return fe;
}
gfxFontEntry*
gfxGDIFontList::GetDefaultFont(const gfxFontStyle* aStyle, PRBool& aNeedsBold)
{
// this really shouldn't fail to find a font....
HGDIOBJ hGDI = ::GetStockObject(DEFAULT_GUI_FONT);
LOGFONTW logFont;
if (hGDI && ::GetObjectW(hGDI, sizeof(logFont), &logFont)) {
nsAutoString resolvedName;
if (ResolveFontName(nsDependentString(logFont.lfFaceName), resolvedName)) {
return FindFontForFamily(resolvedName, aStyle, aNeedsBold);
}
}
// ...but just in case, try another approach as well
NONCLIENTMETRICSW ncm;
ncm.cbSize = sizeof(ncm);
BOOL status = ::SystemParametersInfoW(SPI_GETNONCLIENTMETRICS,
sizeof(ncm), &ncm, 0);
if (status) {
nsAutoString resolvedName;
if (ResolveFontName(nsDependentString(ncm.lfMessageFont.lfFaceName), resolvedName)) {
return FindFontForFamily(resolvedName, aStyle, aNeedsBold);
}
}
return nsnull;
}
PRBool
gfxGDIFontList::ResolveFontName(const nsAString& aFontName, nsAString& aResolvedFontName)
{
nsAutoString keyName(aFontName);
BuildKeyNameFromFontName(keyName);
nsRefPtr<gfxFontFamily> ff;
if (mFontSubstitutes.Get(keyName, &ff)) {
aResolvedFontName = ff->Name();
return PR_TRUE;
}
if (mNonExistingFonts.Contains(keyName))
return PR_FALSE;
if (gfxPlatformFontList::ResolveFontName(aFontName, aResolvedFontName))
return PR_TRUE;
return PR_FALSE;
}
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