зеркало из https://github.com/mozilla/gecko-dev.git
2427 строки
83 KiB
C++
2427 строки
83 KiB
C++
/* -*- 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/Logging.h"
|
|
|
|
#include "gfxFcPlatformFontList.h"
|
|
#include "gfxFont.h"
|
|
#include "gfxFontConstants.h"
|
|
#include "gfxFontFamilyList.h"
|
|
#include "gfxFT2Utils.h"
|
|
#include "gfxPlatform.h"
|
|
#include "mozilla/ArrayUtils.h"
|
|
#include "mozilla/dom/ContentChild.h"
|
|
#include "mozilla/dom/ContentParent.h"
|
|
#include "mozilla/Preferences.h"
|
|
#include "mozilla/Sprintf.h"
|
|
#include "mozilla/TimeStamp.h"
|
|
#include "nsGkAtoms.h"
|
|
#include "nsUnicodeProperties.h"
|
|
#include "nsUnicodeRange.h"
|
|
#include "nsDirectoryServiceUtils.h"
|
|
#include "nsDirectoryServiceDefs.h"
|
|
#include "nsAppDirectoryServiceDefs.h"
|
|
#include "nsCharSeparatedTokenizer.h"
|
|
#include "nsXULAppAPI.h"
|
|
|
|
#include "mozilla/gfx/HelpersCairo.h"
|
|
|
|
#include <fontconfig/fcfreetype.h>
|
|
#include <dlfcn.h>
|
|
#include <unistd.h>
|
|
|
|
#ifdef MOZ_WIDGET_GTK
|
|
#include <gdk/gdk.h>
|
|
#include "gfxPlatformGtk.h"
|
|
#endif
|
|
|
|
#ifdef MOZ_X11
|
|
#include "mozilla/X11Util.h"
|
|
#endif
|
|
|
|
#ifdef MOZ_CONTENT_SANDBOX
|
|
#include "mozilla/SandboxBrokerPolicyFactory.h"
|
|
#include "mozilla/SandboxSettings.h"
|
|
#endif
|
|
|
|
#include FT_MULTIPLE_MASTERS_H
|
|
|
|
using namespace mozilla;
|
|
using namespace mozilla::gfx;
|
|
using namespace mozilla::unicode;
|
|
|
|
using mozilla::dom::SystemFontListEntry;
|
|
using mozilla::dom::FontPatternListEntry;
|
|
|
|
#ifndef FC_POSTSCRIPT_NAME
|
|
#define FC_POSTSCRIPT_NAME "postscriptname" /* String */
|
|
#endif
|
|
#ifndef FC_VARIABLE
|
|
#define FC_VARIABLE "variable" /* Bool */
|
|
#endif
|
|
|
|
#define PRINTING_FC_PROPERTY "gfx.printing"
|
|
|
|
#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_CMAPDATA_ENABLED() MOZ_LOG_TEST( \
|
|
gfxPlatform::GetLog(eGfxLog_cmapdata), \
|
|
LogLevel::Debug)
|
|
|
|
template <>
|
|
class nsAutoRefTraits<FcFontSet> : public nsPointerRefTraits<FcFontSet>
|
|
{
|
|
public:
|
|
static void Release(FcFontSet *ptr) { FcFontSetDestroy(ptr); }
|
|
};
|
|
|
|
template <>
|
|
class nsAutoRefTraits<FcObjectSet> : public nsPointerRefTraits<FcObjectSet>
|
|
{
|
|
public:
|
|
static void Release(FcObjectSet *ptr) { FcObjectSetDestroy(ptr); }
|
|
};
|
|
|
|
static const FcChar8*
|
|
ToFcChar8Ptr(const char* aStr)
|
|
{
|
|
return reinterpret_cast<const FcChar8*>(aStr);
|
|
}
|
|
|
|
static const char*
|
|
ToCharPtr(const FcChar8 *aStr)
|
|
{
|
|
return reinterpret_cast<const char*>(aStr);
|
|
}
|
|
|
|
FT_Library gfxFcPlatformFontList::sCairoFTLibrary = nullptr;
|
|
|
|
static cairo_user_data_key_t sFcFontlistUserFontDataKey;
|
|
|
|
// canonical name ==> first en name or first name if no en name
|
|
// This is the required logic for fullname lookups as per CSS3 Fonts spec.
|
|
static uint32_t
|
|
FindCanonicalNameIndex(FcPattern* aFont, const char* aLangField)
|
|
{
|
|
uint32_t n = 0, en = 0;
|
|
FcChar8* lang;
|
|
while (FcPatternGetString(aFont, aLangField, n, &lang) == FcResultMatch) {
|
|
// look for 'en' or variants, en-US, en-JP etc.
|
|
uint32_t len = strlen(ToCharPtr(lang));
|
|
bool enPrefix = (strncmp(ToCharPtr(lang), "en", 2) == 0);
|
|
if (enPrefix && (len == 2 || (len > 2 && aLangField[2] == '-'))) {
|
|
en = n;
|
|
break;
|
|
}
|
|
n++;
|
|
}
|
|
return en;
|
|
}
|
|
|
|
static void
|
|
GetFaceNames(FcPattern* aFont, const nsAString& aFamilyName,
|
|
nsAString& aPostscriptName, nsAString& aFullname)
|
|
{
|
|
// get the Postscript name
|
|
FcChar8* psname;
|
|
if (FcPatternGetString(aFont, FC_POSTSCRIPT_NAME, 0, &psname) == FcResultMatch) {
|
|
AppendUTF8toUTF16(ToCharPtr(psname), aPostscriptName);
|
|
}
|
|
|
|
// get the canonical fullname (i.e. en name or first name)
|
|
uint32_t en = FindCanonicalNameIndex(aFont, FC_FULLNAMELANG);
|
|
FcChar8* fullname;
|
|
if (FcPatternGetString(aFont, FC_FULLNAME, en, &fullname) == FcResultMatch) {
|
|
AppendUTF8toUTF16(ToCharPtr(fullname), aFullname);
|
|
}
|
|
|
|
// if have fullname, done
|
|
if (!aFullname.IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
// otherwise, set the fullname to family + style name [en] and use that
|
|
aFullname.Append(aFamilyName);
|
|
|
|
// figure out the en style name
|
|
en = FindCanonicalNameIndex(aFont, FC_STYLELANG);
|
|
nsAutoString style;
|
|
FcChar8* stylename = nullptr;
|
|
FcPatternGetString(aFont, FC_STYLE, en, &stylename);
|
|
if (stylename) {
|
|
AppendUTF8toUTF16(ToCharPtr(stylename), style);
|
|
}
|
|
|
|
if (!style.IsEmpty() && !style.EqualsLiteral("Regular")) {
|
|
aFullname.Append(' ');
|
|
aFullname.Append(style);
|
|
}
|
|
}
|
|
|
|
static FontWeight
|
|
MapFcWeight(int aFcWeight)
|
|
{
|
|
if (aFcWeight <= (FC_WEIGHT_THIN + FC_WEIGHT_EXTRALIGHT) / 2) {
|
|
return FontWeight(100);
|
|
}
|
|
if (aFcWeight <= (FC_WEIGHT_EXTRALIGHT + FC_WEIGHT_LIGHT) / 2) {
|
|
return FontWeight(200);
|
|
}
|
|
if (aFcWeight <= (FC_WEIGHT_LIGHT + FC_WEIGHT_BOOK) / 2) {
|
|
return FontWeight(300);
|
|
}
|
|
if (aFcWeight <= (FC_WEIGHT_REGULAR + FC_WEIGHT_MEDIUM) / 2) {
|
|
// This includes FC_WEIGHT_BOOK
|
|
return FontWeight(400);
|
|
}
|
|
if (aFcWeight <= (FC_WEIGHT_MEDIUM + FC_WEIGHT_DEMIBOLD) / 2) {
|
|
return FontWeight(500);
|
|
}
|
|
if (aFcWeight <= (FC_WEIGHT_DEMIBOLD + FC_WEIGHT_BOLD) / 2) {
|
|
return FontWeight(600);
|
|
}
|
|
if (aFcWeight <= (FC_WEIGHT_BOLD + FC_WEIGHT_EXTRABOLD) / 2) {
|
|
return FontWeight(700);
|
|
}
|
|
if (aFcWeight <= (FC_WEIGHT_EXTRABOLD + FC_WEIGHT_BLACK) / 2) {
|
|
return FontWeight(800);
|
|
}
|
|
if (aFcWeight <= FC_WEIGHT_BLACK) {
|
|
return FontWeight(900);
|
|
}
|
|
|
|
// including FC_WEIGHT_EXTRABLACK
|
|
return FontWeight(901);
|
|
}
|
|
|
|
// TODO(emilio, jfkthame): I think this can now be more fine-grained.
|
|
static FontStretch
|
|
MapFcWidth(int aFcWidth)
|
|
{
|
|
if (aFcWidth <= (FC_WIDTH_ULTRACONDENSED + FC_WIDTH_EXTRACONDENSED) / 2) {
|
|
return FontStretch::UltraCondensed();
|
|
}
|
|
if (aFcWidth <= (FC_WIDTH_EXTRACONDENSED + FC_WIDTH_CONDENSED) / 2) {
|
|
return FontStretch::ExtraCondensed();
|
|
}
|
|
if (aFcWidth <= (FC_WIDTH_CONDENSED + FC_WIDTH_SEMICONDENSED) / 2) {
|
|
return FontStretch::Condensed();
|
|
}
|
|
if (aFcWidth <= (FC_WIDTH_SEMICONDENSED + FC_WIDTH_NORMAL) / 2) {
|
|
return FontStretch::SemiCondensed();
|
|
}
|
|
if (aFcWidth <= (FC_WIDTH_NORMAL + FC_WIDTH_SEMIEXPANDED) / 2) {
|
|
return FontStretch::Normal();
|
|
}
|
|
if (aFcWidth <= (FC_WIDTH_SEMIEXPANDED + FC_WIDTH_EXPANDED) / 2) {
|
|
return FontStretch::SemiExpanded();
|
|
}
|
|
if (aFcWidth <= (FC_WIDTH_EXPANDED + FC_WIDTH_EXTRAEXPANDED) / 2) {
|
|
return FontStretch::Expanded();
|
|
}
|
|
if (aFcWidth <= (FC_WIDTH_EXTRAEXPANDED + FC_WIDTH_ULTRAEXPANDED) / 2) {
|
|
return FontStretch::ExtraExpanded();
|
|
}
|
|
return FontStretch::UltraExpanded();
|
|
}
|
|
|
|
gfxFontconfigFontEntry::gfxFontconfigFontEntry(const nsAString& aFaceName,
|
|
FcPattern* aFontPattern,
|
|
bool aIgnoreFcCharmap)
|
|
: gfxFontEntry(aFaceName), mFontPattern(aFontPattern),
|
|
mFTFace(nullptr), mFTFaceInitialized(false),
|
|
mIgnoreFcCharmap(aIgnoreFcCharmap),
|
|
mHasVariationsInitialized(false),
|
|
mAspect(0.0), mFontData(nullptr), mLength(0)
|
|
{
|
|
// italic
|
|
int slant;
|
|
if (FcPatternGetInteger(aFontPattern, FC_SLANT, 0, &slant) != FcResultMatch) {
|
|
slant = FC_SLANT_ROMAN;
|
|
}
|
|
if (slant == FC_SLANT_OBLIQUE) {
|
|
mStyleRange = SlantStyleRange(FontSlantStyle::Oblique());
|
|
} else if (slant > 0) {
|
|
mStyleRange = SlantStyleRange(FontSlantStyle::Italic());
|
|
}
|
|
|
|
// weight
|
|
int weight;
|
|
if (FcPatternGetInteger(aFontPattern, FC_WEIGHT, 0, &weight) != FcResultMatch) {
|
|
weight = FC_WEIGHT_REGULAR;
|
|
}
|
|
mWeightRange = WeightRange(MapFcWeight(weight));
|
|
|
|
// width
|
|
int width;
|
|
if (FcPatternGetInteger(aFontPattern, FC_WIDTH, 0, &width) != FcResultMatch) {
|
|
width = FC_WIDTH_NORMAL;
|
|
}
|
|
mStretchRange = StretchRange(MapFcWidth(width));
|
|
}
|
|
|
|
gfxFontEntry*
|
|
gfxFontconfigFontEntry::Clone() const
|
|
{
|
|
MOZ_ASSERT(!IsUserFont(), "we can only clone installed fonts!");
|
|
return new gfxFontconfigFontEntry(Name(), mFontPattern, mIgnoreFcCharmap);
|
|
}
|
|
|
|
static FcPattern*
|
|
CreatePatternForFace(FT_Face aFace)
|
|
{
|
|
// Use fontconfig to fill out the pattern from the FTFace.
|
|
// The "file" argument cannot be nullptr (in fontconfig-2.6.0 at
|
|
// least). The dummy file passed here is removed below.
|
|
//
|
|
// When fontconfig scans the system fonts, FcConfigGetBlanks(nullptr)
|
|
// is passed as the "blanks" argument, which provides that unexpectedly
|
|
// blank glyphs are elided. Here, however, we pass nullptr for
|
|
// "blanks", effectively assuming that, if the font has a blank glyph,
|
|
// then the author intends any associated character to be rendered
|
|
// blank.
|
|
FcPattern* pattern =
|
|
FcFreeTypeQueryFace(aFace, ToFcChar8Ptr(""), 0, nullptr);
|
|
// given that we have a FT_Face, not really sure this is possible...
|
|
if (!pattern) {
|
|
pattern = FcPatternCreate();
|
|
}
|
|
FcPatternDel(pattern, FC_FILE);
|
|
FcPatternDel(pattern, FC_INDEX);
|
|
|
|
// Make a new pattern and store the face in it so that cairo uses
|
|
// that when creating a cairo font face.
|
|
FcPatternAddFTFace(pattern, FC_FT_FACE, aFace);
|
|
|
|
return pattern;
|
|
}
|
|
|
|
static FT_Face
|
|
CreateFaceForPattern(FcPattern* aPattern)
|
|
{
|
|
FcChar8 *filename;
|
|
if (FcPatternGetString(aPattern, FC_FILE, 0, &filename) != FcResultMatch) {
|
|
return nullptr;
|
|
}
|
|
int index;
|
|
if (FcPatternGetInteger(aPattern, FC_INDEX, 0, &index) != FcResultMatch) {
|
|
index = 0; // default to 0 if not found in pattern
|
|
}
|
|
return Factory::NewFTFace(nullptr, ToCharPtr(filename), index);
|
|
}
|
|
|
|
gfxFontconfigFontEntry::gfxFontconfigFontEntry(const nsAString& aFaceName,
|
|
WeightRange aWeight,
|
|
StretchRange aStretch,
|
|
SlantStyleRange aStyle,
|
|
const uint8_t *aData,
|
|
uint32_t aLength,
|
|
FT_Face aFace)
|
|
: gfxFontEntry(aFaceName),
|
|
mFTFace(aFace), mFTFaceInitialized(true),
|
|
mIgnoreFcCharmap(true),
|
|
mHasVariationsInitialized(false),
|
|
mAspect(0.0), mFontData(aData), mLength(aLength)
|
|
{
|
|
mWeightRange = aWeight;
|
|
mStyleRange = aStyle;
|
|
mStretchRange = aStretch;
|
|
mIsDataUserFont = true;
|
|
|
|
mFontPattern = CreatePatternForFace(mFTFace);
|
|
|
|
mUserFontData = new FTUserFontData(mFTFace, mFontData);
|
|
}
|
|
|
|
gfxFontconfigFontEntry::gfxFontconfigFontEntry(const nsAString& aFaceName,
|
|
FcPattern* aFontPattern,
|
|
WeightRange aWeight,
|
|
StretchRange aStretch,
|
|
SlantStyleRange aStyle)
|
|
: gfxFontEntry(aFaceName), mFontPattern(aFontPattern),
|
|
mFTFace(nullptr), mFTFaceInitialized(false),
|
|
mHasVariationsInitialized(false),
|
|
mAspect(0.0), mFontData(nullptr), mLength(0)
|
|
{
|
|
mWeightRange = aWeight;
|
|
mStyleRange = aStyle;
|
|
mStretchRange = aStretch;
|
|
mIsLocalUserFont = true;
|
|
|
|
// The proper setting of mIgnoreFcCharmap is tricky for fonts loaded
|
|
// via src:local()...
|
|
// If the local font happens to come from the application fontset,
|
|
// we want to set it to true so that color/svg fonts will work even
|
|
// if the default glyphs are blank; but if the local font is a non-
|
|
// sfnt face (e.g. legacy type 1) then we need to set it to false
|
|
// because our cmap-reading code will fail and we depend on FT+Fc to
|
|
// determine the coverage.
|
|
// We set the flag here, but may flip it the first time TestCharacterMap
|
|
// is called, at which point we'll look to see whether a 'cmap' is
|
|
// actually present in the font.
|
|
mIgnoreFcCharmap = true;
|
|
}
|
|
|
|
typedef FT_Error (*GetVarFunc)(FT_Face, FT_MM_Var**);
|
|
typedef FT_Error (*DoneVarFunc)(FT_Library, FT_MM_Var*);
|
|
static GetVarFunc sGetVar;
|
|
static DoneVarFunc sDoneVar;
|
|
static bool sInitializedVarFuncs = false;
|
|
|
|
static void
|
|
InitializeVarFuncs()
|
|
{
|
|
if (sInitializedVarFuncs) {
|
|
return;
|
|
}
|
|
sInitializedVarFuncs = true;
|
|
#if MOZ_TREE_FREETYPE
|
|
sGetVar = &FT_Get_MM_Var;
|
|
sDoneVar = &FT_Done_MM_Var;
|
|
#else
|
|
sGetVar = (GetVarFunc)dlsym(RTLD_DEFAULT, "FT_Get_MM_Var");
|
|
sDoneVar = (DoneVarFunc)dlsym(RTLD_DEFAULT, "FT_Done_MM_Var");
|
|
#endif
|
|
}
|
|
|
|
gfxFontconfigFontEntry::~gfxFontconfigFontEntry()
|
|
{
|
|
if (mMMVar) {
|
|
// Prior to freetype 2.9, there was no specific function to free the
|
|
// FT_MM_Var record, and the docs just said to use free().
|
|
// InitializeVarFuncs must have been called in order for mMMVar to be
|
|
// non-null here, so we don't need to do it again.
|
|
if (sDoneVar) {
|
|
MOZ_ASSERT(mFTFace, "How did mMMVar get set without a face?");
|
|
(*sDoneVar)(mFTFace->glyph->library, mMMVar);
|
|
} else {
|
|
free(mMMVar);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
gfxFontconfigFontEntry::ReadCMAP(FontInfoData *aFontInfoData)
|
|
{
|
|
// attempt this once, if errors occur leave a blank cmap
|
|
if (mCharacterMap) {
|
|
return NS_OK;
|
|
}
|
|
|
|
RefPtr<gfxCharacterMap> charmap;
|
|
nsresult rv;
|
|
|
|
if (aFontInfoData && (charmap = GetCMAPFromFontInfo(aFontInfoData,
|
|
mUVSOffset))) {
|
|
rv = NS_OK;
|
|
} else {
|
|
uint32_t kCMAP = TRUETYPE_TAG('c','m','a','p');
|
|
charmap = new gfxCharacterMap();
|
|
AutoTable cmapTable(this, kCMAP);
|
|
|
|
if (cmapTable) {
|
|
uint32_t cmapLen;
|
|
const uint8_t* cmapData =
|
|
reinterpret_cast<const uint8_t*>(hb_blob_get_data(cmapTable,
|
|
&cmapLen));
|
|
rv = gfxFontUtils::ReadCMAP(cmapData, cmapLen,
|
|
*charmap, mUVSOffset);
|
|
} else {
|
|
rv = NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
}
|
|
|
|
mHasCmapTable = NS_SUCCEEDED(rv);
|
|
if (mHasCmapTable) {
|
|
gfxPlatformFontList *pfl = gfxPlatformFontList::PlatformFontList();
|
|
mCharacterMap = pfl->FindCharMap(charmap);
|
|
} else {
|
|
// if error occurred, initialize to null cmap
|
|
mCharacterMap = new gfxCharacterMap();
|
|
}
|
|
|
|
LOG_FONTLIST(("(fontlist-cmap) name: %s, size: %zu hash: %8.8x%s\n",
|
|
NS_ConvertUTF16toUTF8(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",
|
|
NS_ConvertUTF16toUTF8(mName).get());
|
|
charmap->Dump(prefix, eGfxLog_cmapdata);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
static bool
|
|
HasChar(FcPattern *aFont, FcChar32 aCh)
|
|
{
|
|
FcCharSet *charset = nullptr;
|
|
FcPatternGetCharSet(aFont, FC_CHARSET, 0, &charset);
|
|
return charset && FcCharSetHasChar(charset, aCh);
|
|
}
|
|
|
|
bool
|
|
gfxFontconfigFontEntry::TestCharacterMap(uint32_t aCh)
|
|
{
|
|
// For user fonts, or for fonts bundled with the app (which might include
|
|
// color/svg glyphs where the default glyphs may be blank, and thus confuse
|
|
// fontconfig/freetype's char map checking), we instead check the cmap
|
|
// directly for character coverage.
|
|
if (mIgnoreFcCharmap) {
|
|
// If it does not actually have a cmap, switch our strategy to use
|
|
// fontconfig's charmap after all (except for data fonts, which must
|
|
// always have a cmap to have passed OTS validation).
|
|
if (!mIsDataUserFont && !HasFontTable(TRUETYPE_TAG('c','m','a','p'))) {
|
|
mIgnoreFcCharmap = false;
|
|
// ...and continue with HasChar() below.
|
|
} else {
|
|
return gfxFontEntry::TestCharacterMap(aCh);
|
|
}
|
|
}
|
|
// otherwise (for system fonts), use the charmap in the pattern
|
|
return HasChar(mFontPattern, aCh);
|
|
}
|
|
|
|
hb_blob_t*
|
|
gfxFontconfigFontEntry::GetFontTable(uint32_t aTableTag)
|
|
{
|
|
// for data fonts, read directly from the font data
|
|
if (mFontData) {
|
|
return gfxFontUtils::GetTableFromFontData(mFontData, aTableTag);
|
|
}
|
|
|
|
return gfxFontEntry::GetFontTable(aTableTag);
|
|
}
|
|
|
|
void
|
|
gfxFontconfigFontEntry::MaybeReleaseFTFace()
|
|
{
|
|
// don't release if either HB or Gr face still exists
|
|
if (mHBFace || mGrFace) {
|
|
return;
|
|
}
|
|
// only close out FT_Face for system fonts, not for data fonts
|
|
if (!mIsDataUserFont) {
|
|
if (mFTFace) {
|
|
if (mMMVar) {
|
|
if (sDoneVar) {
|
|
(*sDoneVar)(mFTFace->glyph->library, mMMVar);
|
|
} else {
|
|
free(mMMVar);
|
|
}
|
|
mMMVar = nullptr;
|
|
}
|
|
Factory::ReleaseFTFace(mFTFace);
|
|
mFTFace = nullptr;
|
|
}
|
|
mFTFaceInitialized = false;
|
|
}
|
|
}
|
|
|
|
void
|
|
gfxFontconfigFontEntry::ForgetHBFace()
|
|
{
|
|
gfxFontEntry::ForgetHBFace();
|
|
MaybeReleaseFTFace();
|
|
}
|
|
|
|
void
|
|
gfxFontconfigFontEntry::ReleaseGrFace(gr_face* aFace)
|
|
{
|
|
gfxFontEntry::ReleaseGrFace(aFace);
|
|
MaybeReleaseFTFace();
|
|
}
|
|
|
|
double
|
|
gfxFontconfigFontEntry::GetAspect()
|
|
{
|
|
if (mAspect != 0.0) {
|
|
return mAspect;
|
|
}
|
|
|
|
// try to compute aspect from OS/2 metrics if available
|
|
AutoTable os2Table(this, TRUETYPE_TAG('O','S','/','2'));
|
|
if (os2Table) {
|
|
uint16_t upem = UnitsPerEm();
|
|
if (upem != kInvalidUPEM) {
|
|
uint32_t len;
|
|
auto os2 = reinterpret_cast<const OS2Table*>
|
|
(hb_blob_get_data(os2Table, &len));
|
|
if (uint16_t(os2->version) >= 2) {
|
|
if (len >= offsetof(OS2Table, sxHeight) + sizeof(int16_t) &&
|
|
int16_t(os2->sxHeight) > 0.1 * upem) {
|
|
mAspect = double(int16_t(os2->sxHeight)) / upem;
|
|
return mAspect;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// default to aspect = 0.5 if the code below fails
|
|
mAspect = 0.5;
|
|
|
|
// create a font to calculate x-height / em-height
|
|
gfxFontStyle s;
|
|
s.size = 100.0; // pick large size to avoid possible hinting artifacts
|
|
RefPtr<gfxFont> font = FindOrMakeFont(&s);
|
|
if (font) {
|
|
const gfxFont::Metrics& metrics =
|
|
font->GetMetrics(gfxFont::eHorizontal);
|
|
|
|
// The factor of 0.1 ensures that xHeight is sane so fonts don't
|
|
// become huge. Strictly ">" ensures that xHeight and emHeight are
|
|
// not both zero.
|
|
if (metrics.xHeight > 0.1 * metrics.emHeight) {
|
|
mAspect = metrics.xHeight / metrics.emHeight;
|
|
}
|
|
}
|
|
|
|
return mAspect;
|
|
}
|
|
|
|
static void
|
|
PrepareFontOptions(FcPattern* aPattern,
|
|
cairo_font_options_t* aFontOptions)
|
|
{
|
|
NS_ASSERTION(aFontOptions, "null font options passed to PrepareFontOptions");
|
|
|
|
// xxx - taken from the gfxFontconfigFonts code, needs to be reviewed
|
|
|
|
FcBool printing;
|
|
if (FcPatternGetBool(aPattern, PRINTING_FC_PROPERTY, 0, &printing) !=
|
|
FcResultMatch) {
|
|
printing = FcFalse;
|
|
}
|
|
|
|
// Font options are set explicitly here to improve cairo's caching
|
|
// behavior and to record the relevant parts of the pattern for
|
|
// SetupCairoFont (so that the pattern can be released).
|
|
//
|
|
// Most font_options have already been set as defaults on the FcPattern
|
|
// with cairo_ft_font_options_substitute(), then user and system
|
|
// fontconfig configurations were applied. The resulting font_options
|
|
// have been recorded on the face during
|
|
// cairo_ft_font_face_create_for_pattern().
|
|
//
|
|
// None of the settings here cause this scaled_font to behave any
|
|
// differently from how it would behave if it were created from the same
|
|
// face with default font_options.
|
|
//
|
|
// We set options explicitly so that the same scaled_font will be found in
|
|
// the cairo_scaled_font_map when cairo loads glyphs from a context with
|
|
// the same font_face, font_matrix, ctm, and surface font_options.
|
|
//
|
|
// Unfortunately, _cairo_scaled_font_keys_equal doesn't know about the
|
|
// font_options on the cairo_ft_font_face, and doesn't consider default
|
|
// option values to not match any explicit values.
|
|
//
|
|
// Even after cairo_set_scaled_font is used to set font_options for the
|
|
// cairo context, when cairo looks for a scaled_font for the context, it
|
|
// will look for a font with some option values from the target surface if
|
|
// any values are left default on the context font_options. If this
|
|
// scaled_font is created with default font_options, cairo will not find
|
|
// it.
|
|
//
|
|
// The one option not recorded in the pattern is hint_metrics, which will
|
|
// affect glyph metrics. The default behaves as CAIRO_HINT_METRICS_ON.
|
|
// We should be considering the font_options of the surface on which this
|
|
// font will be used, but currently we don't have different gfxFonts for
|
|
// different surface font_options, so we'll create a font suitable for the
|
|
// Screen. Image and xlib surfaces default to CAIRO_HINT_METRICS_ON.
|
|
if (printing) {
|
|
cairo_font_options_set_hint_metrics(aFontOptions, CAIRO_HINT_METRICS_OFF);
|
|
} else {
|
|
cairo_font_options_set_hint_metrics(aFontOptions, CAIRO_HINT_METRICS_ON);
|
|
}
|
|
|
|
// The remaining options have been recorded on the pattern and the face.
|
|
// _cairo_ft_options_merge has some logic to decide which options from the
|
|
// scaled_font or from the cairo_ft_font_face take priority in the way the
|
|
// font behaves.
|
|
//
|
|
// In the majority of cases, _cairo_ft_options_merge uses the options from
|
|
// the cairo_ft_font_face, so sometimes it is not so important which
|
|
// values are set here so long as they are not defaults, but we'll set
|
|
// them to the exact values that we expect from the font, to be consistent
|
|
// and to protect against changes in cairo.
|
|
//
|
|
// In some cases, _cairo_ft_options_merge uses some options from the
|
|
// scaled_font's font_options rather than options on the
|
|
// cairo_ft_font_face (from fontconfig).
|
|
// https://bugs.freedesktop.org/show_bug.cgi?id=11838
|
|
//
|
|
// Surface font options were set on the pattern in
|
|
// cairo_ft_font_options_substitute. If fontconfig has changed the
|
|
// hint_style then that is what the user (or distribution) wants, so we
|
|
// use the setting from the FcPattern.
|
|
//
|
|
// Fallback values here mirror treatment of defaults in cairo-ft-font.c.
|
|
FcBool hinting = FcFalse;
|
|
if (FcPatternGetBool(aPattern, FC_HINTING, 0, &hinting) != FcResultMatch) {
|
|
hinting = FcTrue;
|
|
}
|
|
|
|
cairo_hint_style_t hint_style;
|
|
if (printing || !hinting) {
|
|
hint_style = CAIRO_HINT_STYLE_NONE;
|
|
} else {
|
|
int fc_hintstyle;
|
|
if (FcPatternGetInteger(aPattern, FC_HINT_STYLE,
|
|
0, &fc_hintstyle) != FcResultMatch) {
|
|
fc_hintstyle = FC_HINT_FULL;
|
|
}
|
|
switch (fc_hintstyle) {
|
|
case FC_HINT_NONE:
|
|
hint_style = CAIRO_HINT_STYLE_NONE;
|
|
break;
|
|
case FC_HINT_SLIGHT:
|
|
hint_style = CAIRO_HINT_STYLE_SLIGHT;
|
|
break;
|
|
case FC_HINT_MEDIUM:
|
|
default: // This fallback mirrors _get_pattern_ft_options in cairo.
|
|
hint_style = CAIRO_HINT_STYLE_MEDIUM;
|
|
break;
|
|
case FC_HINT_FULL:
|
|
hint_style = CAIRO_HINT_STYLE_FULL;
|
|
break;
|
|
}
|
|
}
|
|
cairo_font_options_set_hint_style(aFontOptions, hint_style);
|
|
|
|
int rgba;
|
|
if (FcPatternGetInteger(aPattern,
|
|
FC_RGBA, 0, &rgba) != FcResultMatch) {
|
|
rgba = FC_RGBA_UNKNOWN;
|
|
}
|
|
cairo_subpixel_order_t subpixel_order = CAIRO_SUBPIXEL_ORDER_DEFAULT;
|
|
switch (rgba) {
|
|
case FC_RGBA_UNKNOWN:
|
|
case FC_RGBA_NONE:
|
|
default:
|
|
// There is no CAIRO_SUBPIXEL_ORDER_NONE. Subpixel antialiasing
|
|
// is disabled through cairo_antialias_t.
|
|
rgba = FC_RGBA_NONE;
|
|
// subpixel_order won't be used by the font as we won't use
|
|
// CAIRO_ANTIALIAS_SUBPIXEL, but don't leave it at default for
|
|
// caching reasons described above. Fall through:
|
|
MOZ_FALLTHROUGH;
|
|
case FC_RGBA_RGB:
|
|
subpixel_order = CAIRO_SUBPIXEL_ORDER_RGB;
|
|
break;
|
|
case FC_RGBA_BGR:
|
|
subpixel_order = CAIRO_SUBPIXEL_ORDER_BGR;
|
|
break;
|
|
case FC_RGBA_VRGB:
|
|
subpixel_order = CAIRO_SUBPIXEL_ORDER_VRGB;
|
|
break;
|
|
case FC_RGBA_VBGR:
|
|
subpixel_order = CAIRO_SUBPIXEL_ORDER_VBGR;
|
|
break;
|
|
}
|
|
cairo_font_options_set_subpixel_order(aFontOptions, subpixel_order);
|
|
|
|
FcBool fc_antialias;
|
|
if (FcPatternGetBool(aPattern,
|
|
FC_ANTIALIAS, 0, &fc_antialias) != FcResultMatch) {
|
|
fc_antialias = FcTrue;
|
|
}
|
|
cairo_antialias_t antialias;
|
|
if (!fc_antialias) {
|
|
antialias = CAIRO_ANTIALIAS_NONE;
|
|
} else if (rgba == FC_RGBA_NONE) {
|
|
antialias = CAIRO_ANTIALIAS_GRAY;
|
|
} else {
|
|
antialias = CAIRO_ANTIALIAS_SUBPIXEL;
|
|
}
|
|
cairo_font_options_set_antialias(aFontOptions, antialias);
|
|
}
|
|
|
|
static void
|
|
ReleaseFTUserFontData(void* aData)
|
|
{
|
|
static_cast<FTUserFontData*>(aData)->Release();
|
|
}
|
|
|
|
cairo_scaled_font_t*
|
|
gfxFontconfigFontEntry::CreateScaledFont(FcPattern* aRenderPattern,
|
|
gfxFloat aAdjustedSize,
|
|
const gfxFontStyle *aStyle)
|
|
{
|
|
if (aStyle->NeedsSyntheticBold(this)) {
|
|
FcPatternAddBool(aRenderPattern, FC_EMBOLDEN, FcTrue);
|
|
}
|
|
|
|
// will synthetic oblique be applied using a transform?
|
|
bool needsOblique = IsUpright() &&
|
|
aStyle->style != FontSlantStyle::Normal() &&
|
|
aStyle->allowSyntheticStyle;
|
|
|
|
if (needsOblique) {
|
|
// disable embedded bitmaps (mimics behavior in 90-synthetic.conf)
|
|
FcPatternDel(aRenderPattern, FC_EMBEDDED_BITMAP);
|
|
FcPatternAddBool(aRenderPattern, FC_EMBEDDED_BITMAP, FcFalse);
|
|
}
|
|
|
|
AutoTArray<FT_Fixed,8> coords;
|
|
if (HasVariations()) {
|
|
FT_Face ftFace = GetFTFace();
|
|
if (ftFace) {
|
|
AutoTArray<gfxFontVariation,8> settings;
|
|
GetVariationsForStyle(settings, *aStyle);
|
|
gfxFT2FontBase::SetupVarCoords(ftFace, settings, &coords);
|
|
}
|
|
}
|
|
|
|
cairo_font_face_t *face =
|
|
cairo_ft_font_face_create_for_pattern(aRenderPattern,
|
|
coords.Elements(),
|
|
coords.Length());
|
|
|
|
if (mFontData) {
|
|
// for data fonts, add the face/data pointer to the cairo font face
|
|
// so that it gets deleted whenever cairo decides
|
|
NS_ASSERTION(mFTFace, "FT_Face is null when setting user data");
|
|
NS_ASSERTION(mUserFontData, "user font data is null when setting user data");
|
|
mUserFontData.get()->AddRef();
|
|
if (cairo_font_face_set_user_data(face,
|
|
&sFcFontlistUserFontDataKey,
|
|
mUserFontData,
|
|
ReleaseFTUserFontData) != CAIRO_STATUS_SUCCESS) {
|
|
NS_WARNING("Failed binding FTUserFontData to Cairo font face");
|
|
mUserFontData.get()->Release();
|
|
cairo_font_face_destroy(face);
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
cairo_scaled_font_t *scaledFont = nullptr;
|
|
|
|
cairo_matrix_t sizeMatrix;
|
|
cairo_matrix_t identityMatrix;
|
|
|
|
cairo_matrix_init_scale(&sizeMatrix, aAdjustedSize, aAdjustedSize);
|
|
cairo_matrix_init_identity(&identityMatrix);
|
|
|
|
cairo_font_options_t *fontOptions = cairo_font_options_create();
|
|
PrepareFontOptions(aRenderPattern, fontOptions);
|
|
|
|
scaledFont = cairo_scaled_font_create(face, &sizeMatrix,
|
|
&identityMatrix, fontOptions);
|
|
cairo_font_options_destroy(fontOptions);
|
|
|
|
NS_ASSERTION(cairo_scaled_font_status(scaledFont) == CAIRO_STATUS_SUCCESS,
|
|
"Failed to make scaled font");
|
|
|
|
cairo_font_face_destroy(face);
|
|
|
|
return scaledFont;
|
|
}
|
|
|
|
#ifdef MOZ_WIDGET_GTK
|
|
// defintion included below
|
|
static void ApplyGdkScreenFontOptions(FcPattern *aPattern);
|
|
#endif
|
|
|
|
#ifdef MOZ_X11
|
|
static bool
|
|
GetXftInt(Display* aDisplay, const char* aName, int* aResult)
|
|
{
|
|
if (!aDisplay) {
|
|
return false;
|
|
}
|
|
char* value = XGetDefault(aDisplay, "Xft", aName);
|
|
if (!value) {
|
|
return false;
|
|
}
|
|
if (FcNameConstant(const_cast<FcChar8*>(ToFcChar8Ptr(value)), aResult)) {
|
|
return true;
|
|
}
|
|
char* end;
|
|
*aResult = strtol(value, &end, 0);
|
|
if (end != value) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
static void
|
|
PreparePattern(FcPattern* aPattern, bool aIsPrinterFont)
|
|
{
|
|
FcConfigSubstitute(nullptr, aPattern, FcMatchPattern);
|
|
|
|
// This gets cairo_font_options_t for the Screen. We should have
|
|
// different font options for printing (no hinting) but we are not told
|
|
// what we are measuring for.
|
|
//
|
|
// If cairo adds support for lcd_filter, gdk will not provide the default
|
|
// setting for that option. We could get the default setting by creating
|
|
// an xlib surface once, recording its font_options, and then merging the
|
|
// gdk options.
|
|
//
|
|
// Using an xlib surface would also be an option to get Screen font
|
|
// options for non-GTK X11 toolkits, but less efficient than using GDK to
|
|
// pick up dynamic changes.
|
|
if(aIsPrinterFont) {
|
|
cairo_font_options_t *options = cairo_font_options_create();
|
|
cairo_font_options_set_hint_style (options, CAIRO_HINT_STYLE_NONE);
|
|
cairo_font_options_set_antialias (options, CAIRO_ANTIALIAS_GRAY);
|
|
cairo_ft_font_options_substitute(options, aPattern);
|
|
cairo_font_options_destroy(options);
|
|
FcPatternAddBool(aPattern, PRINTING_FC_PROPERTY, FcTrue);
|
|
} else if (!gfxPlatform::IsHeadless()) {
|
|
#ifdef MOZ_WIDGET_GTK
|
|
ApplyGdkScreenFontOptions(aPattern);
|
|
|
|
#ifdef MOZ_X11
|
|
FcValue value;
|
|
int lcdfilter;
|
|
if (FcPatternGet(aPattern, FC_LCD_FILTER, 0, &value) == FcResultNoMatch) {
|
|
GdkDisplay* dpy = gdk_display_get_default();
|
|
if (GDK_IS_X11_DISPLAY(dpy) &&
|
|
GetXftInt(GDK_DISPLAY_XDISPLAY(dpy), "lcdfilter", &lcdfilter)) {
|
|
FcPatternAddInteger(aPattern, FC_LCD_FILTER, lcdfilter);
|
|
}
|
|
}
|
|
#endif // MOZ_X11
|
|
#endif // MOZ_WIDGET_GTK
|
|
}
|
|
|
|
FcDefaultSubstitute(aPattern);
|
|
}
|
|
|
|
void
|
|
gfxFontconfigFontEntry::UnscaledFontCache::MoveToFront(size_t aIndex) {
|
|
if (aIndex > 0) {
|
|
ThreadSafeWeakPtr<UnscaledFontFontconfig> front =
|
|
Move(mUnscaledFonts[aIndex]);
|
|
for (size_t i = aIndex; i > 0; i--) {
|
|
mUnscaledFonts[i] = Move(mUnscaledFonts[i-1]);
|
|
}
|
|
mUnscaledFonts[0] = Move(front);
|
|
}
|
|
}
|
|
|
|
already_AddRefed<UnscaledFontFontconfig>
|
|
gfxFontconfigFontEntry::UnscaledFontCache::Lookup(const char* aFile, uint32_t aIndex) {
|
|
for (size_t i = 0; i < kNumEntries; i++) {
|
|
RefPtr<UnscaledFontFontconfig> entry(mUnscaledFonts[i]);
|
|
if (entry &&
|
|
!strcmp(entry->GetFile(), aFile) &&
|
|
entry->GetIndex() == aIndex) {
|
|
MoveToFront(i);
|
|
return entry.forget();
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
static inline gfxFloat
|
|
SizeForStyle(gfxFontconfigFontEntry* aEntry, const gfxFontStyle& aStyle)
|
|
{
|
|
return aStyle.sizeAdjust >= 0.0 ?
|
|
aStyle.GetAdjustedSize(aEntry->GetAspect()) :
|
|
aStyle.size;
|
|
}
|
|
|
|
static double
|
|
ChooseFontSize(gfxFontconfigFontEntry* aEntry,
|
|
const gfxFontStyle& aStyle)
|
|
{
|
|
double requestedSize = SizeForStyle(aEntry, aStyle);
|
|
double bestDist = -1.0;
|
|
double bestSize = requestedSize;
|
|
double size;
|
|
int v = 0;
|
|
while (FcPatternGetDouble(aEntry->GetPattern(),
|
|
FC_PIXEL_SIZE, v, &size) == FcResultMatch) {
|
|
++v;
|
|
double dist = fabs(size - requestedSize);
|
|
if (bestDist < 0.0 || dist < bestDist) {
|
|
bestDist = dist;
|
|
bestSize = size;
|
|
}
|
|
}
|
|
// If the font has bitmaps but wants to be scaled, then let it scale.
|
|
if (bestSize >= 0.0) {
|
|
FcBool scalable;
|
|
if (FcPatternGetBool(aEntry->GetPattern(),
|
|
FC_SCALABLE, 0, &scalable) == FcResultMatch &&
|
|
scalable) {
|
|
return requestedSize;
|
|
}
|
|
}
|
|
return bestSize;
|
|
}
|
|
|
|
gfxFont*
|
|
gfxFontconfigFontEntry::CreateFontInstance(const gfxFontStyle *aFontStyle)
|
|
{
|
|
nsAutoRef<FcPattern> pattern(FcPatternCreate());
|
|
if (!pattern) {
|
|
NS_WARNING("Failed to create Fontconfig pattern for font instance");
|
|
return nullptr;
|
|
}
|
|
|
|
double size = ChooseFontSize(this, *aFontStyle);
|
|
FcPatternAddDouble(pattern, FC_PIXEL_SIZE, size);
|
|
|
|
FT_Face face = mFTFace;
|
|
FcPattern* fontPattern = mFontPattern;
|
|
if (face && face->face_flags & FT_FACE_FLAG_MULTIPLE_MASTERS) {
|
|
// For variation fonts, we create a new FT_Face and FcPattern here
|
|
// so that variation coordinates from the style can be applied
|
|
// without affecting other font instances created from the same
|
|
// entry (font resource).
|
|
if (mFontData) {
|
|
// For user fonts: create a new FT_Face from the font data, and then
|
|
// make a pattern from that.
|
|
face = Factory::NewFTFaceFromData(nullptr, mFontData, mLength, 0);
|
|
fontPattern = CreatePatternForFace(face);
|
|
} else {
|
|
// For system fonts: create a new FT_Face and store it in a copy of
|
|
// the original mFontPattern.
|
|
fontPattern = FcPatternDuplicate(mFontPattern);
|
|
face = CreateFaceForPattern(fontPattern);
|
|
if (face) {
|
|
FcPatternAddFTFace(fontPattern, FC_FT_FACE, face);
|
|
} else {
|
|
// I don't think CreateFaceForPattern above should ever fail,
|
|
// but just in case let's fall back here.
|
|
face = mFTFace;
|
|
}
|
|
}
|
|
}
|
|
|
|
PreparePattern(pattern, aFontStyle->printerFont);
|
|
nsAutoRef<FcPattern> renderPattern
|
|
(FcFontRenderPrepare(nullptr, pattern, fontPattern));
|
|
if (fontPattern != mFontPattern) {
|
|
// Discard temporary pattern used for variation support
|
|
FcPatternDestroy(fontPattern);
|
|
}
|
|
if (!renderPattern) {
|
|
NS_WARNING("Failed to prepare Fontconfig pattern for font instance");
|
|
return nullptr;
|
|
}
|
|
|
|
cairo_scaled_font_t* scaledFont =
|
|
CreateScaledFont(renderPattern, size, aFontStyle);
|
|
|
|
const FcChar8* file = ToFcChar8Ptr("");
|
|
int index = 0;
|
|
if (!mFontData) {
|
|
if (FcPatternGetString(renderPattern, FC_FILE, 0,
|
|
const_cast<FcChar8**>(&file)) != FcResultMatch ||
|
|
FcPatternGetInteger(renderPattern, FC_INDEX, 0, &index) != FcResultMatch) {
|
|
NS_WARNING("No file in Fontconfig pattern for font instance");
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
RefPtr<UnscaledFontFontconfig> unscaledFont =
|
|
mUnscaledFontCache.Lookup(ToCharPtr(file), index);
|
|
if (!unscaledFont) {
|
|
unscaledFont =
|
|
mFontData ?
|
|
new UnscaledFontFontconfig(face) :
|
|
new UnscaledFontFontconfig(ToCharPtr(file), index);
|
|
mUnscaledFontCache.Add(unscaledFont);
|
|
}
|
|
|
|
gfxFont* newFont =
|
|
new gfxFontconfigFont(unscaledFont, scaledFont,
|
|
renderPattern, size,
|
|
this, aFontStyle);
|
|
cairo_scaled_font_destroy(scaledFont);
|
|
|
|
return newFont;
|
|
}
|
|
|
|
FT_Face
|
|
gfxFontconfigFontEntry::GetFTFace()
|
|
{
|
|
if (!mFTFaceInitialized) {
|
|
mFTFaceInitialized = true;
|
|
mFTFace = CreateFaceForPattern(mFontPattern);
|
|
}
|
|
return mFTFace;
|
|
}
|
|
|
|
bool
|
|
gfxFontconfigFontEntry::HasVariations()
|
|
{
|
|
if (mHasVariationsInitialized) {
|
|
return mHasVariations;
|
|
}
|
|
mHasVariationsInitialized = true;
|
|
mHasVariations = false;
|
|
|
|
if (!gfxPlatform::GetPlatform()->HasVariationFontSupport()) {
|
|
return mHasVariations;
|
|
}
|
|
|
|
// For installed fonts, query the fontconfig pattern rather than paying
|
|
// the cost of loading a FT_Face that we otherwise might never need.
|
|
if (!IsUserFont() || IsLocalUserFont()) {
|
|
FcBool variable;
|
|
if ((FcPatternGetBool(mFontPattern, FC_VARIABLE, 0,
|
|
&variable) == FcResultMatch) && variable) {
|
|
mHasVariations = true;
|
|
}
|
|
} else {
|
|
FT_Face face = GetFTFace();
|
|
if (face) {
|
|
mHasVariations = face->face_flags & FT_FACE_FLAG_MULTIPLE_MASTERS;
|
|
}
|
|
}
|
|
|
|
return mHasVariations;
|
|
}
|
|
|
|
FT_MM_Var*
|
|
gfxFontconfigFontEntry::GetMMVar()
|
|
{
|
|
if (mMMVarInitialized) {
|
|
return mMMVar;
|
|
}
|
|
mMMVarInitialized = true;
|
|
InitializeVarFuncs();
|
|
if (!sGetVar) {
|
|
return nullptr;
|
|
}
|
|
FT_Face face = GetFTFace();
|
|
if (!face) {
|
|
return nullptr;
|
|
}
|
|
if (FT_Err_Ok != (*sGetVar)(face, &mMMVar)) {
|
|
mMMVar = nullptr;
|
|
}
|
|
return mMMVar;
|
|
}
|
|
|
|
void
|
|
gfxFontconfigFontEntry::GetVariationAxes(nsTArray<gfxFontVariationAxis>& aAxes)
|
|
{
|
|
if (!HasVariations()) {
|
|
return;
|
|
}
|
|
gfxFT2Utils::GetVariationAxes(GetMMVar(), aAxes);
|
|
}
|
|
|
|
void
|
|
gfxFontconfigFontEntry::GetVariationInstances(
|
|
nsTArray<gfxFontVariationInstance>& aInstances)
|
|
{
|
|
if (!HasVariations()) {
|
|
return;
|
|
}
|
|
gfxFT2Utils::GetVariationInstances(this, GetMMVar(), aInstances);
|
|
}
|
|
|
|
nsresult
|
|
gfxFontconfigFontEntry::CopyFontTable(uint32_t aTableTag,
|
|
nsTArray<uint8_t>& aBuffer)
|
|
{
|
|
NS_ASSERTION(!mIsDataUserFont,
|
|
"data fonts should be reading tables directly from memory");
|
|
|
|
FT_Face face = GetFTFace();
|
|
if (!face) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
FT_ULong length = 0;
|
|
if (FT_Load_Sfnt_Table(face, aTableTag, 0, nullptr, &length) != 0) {
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
if (!aBuffer.SetLength(length, fallible)) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
if (FT_Load_Sfnt_Table(face, aTableTag, 0, aBuffer.Elements(), &length) != 0) {
|
|
aBuffer.Clear();
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
gfxFontconfigFontFamily::FindStyleVariations(FontInfoData *aFontInfoData)
|
|
{
|
|
if (mHasStyles) {
|
|
return;
|
|
}
|
|
|
|
// add font entries for each of the faces
|
|
uint32_t numFonts = mFontPatterns.Length();
|
|
NS_ASSERTION(numFonts, "font family containing no faces!!");
|
|
uint32_t numRegularFaces = 0;
|
|
for (uint32_t i = 0; i < numFonts; i++) {
|
|
FcPattern* face = mFontPatterns[i];
|
|
|
|
// figure out the psname/fullname and choose which to use as the facename
|
|
nsAutoString psname, fullname;
|
|
GetFaceNames(face, mName, psname, fullname);
|
|
const nsAutoString& faceName = !psname.IsEmpty() ? psname : fullname;
|
|
|
|
gfxFontconfigFontEntry *fontEntry =
|
|
new gfxFontconfigFontEntry(faceName, face, mContainsAppFonts);
|
|
|
|
if (gfxPlatform::GetPlatform()->HasVariationFontSupport()) {
|
|
fontEntry->SetupVariationRanges();
|
|
}
|
|
|
|
AddFontEntry(fontEntry);
|
|
|
|
if (fontEntry->IsNormalStyle()) {
|
|
numRegularFaces++;
|
|
}
|
|
|
|
if (LOG_FONTLIST_ENABLED()) {
|
|
nsAutoCString weightString;
|
|
fontEntry->Weight().ToString(weightString);
|
|
nsAutoCString stretchString;
|
|
fontEntry->Stretch().ToString(stretchString);
|
|
nsAutoCString styleString;
|
|
fontEntry->SlantStyle().ToString(styleString);
|
|
LOG_FONTLIST(("(fontlist) added (%s) to family (%s)"
|
|
" with style: %s weight: %s stretch: %s"
|
|
" psname: %s fullname: %s",
|
|
NS_ConvertUTF16toUTF8(fontEntry->Name()).get(),
|
|
NS_ConvertUTF16toUTF8(Name()).get(),
|
|
styleString.get(),
|
|
weightString.get(),
|
|
stretchString.get(),
|
|
NS_ConvertUTF16toUTF8(psname).get(),
|
|
NS_ConvertUTF16toUTF8(fullname).get()));
|
|
}
|
|
}
|
|
|
|
// somewhat arbitrary, but define a family with two or more regular
|
|
// faces as a family for which intra-family fallback should be used
|
|
if (numRegularFaces > 1) {
|
|
mCheckForFallbackFaces = true;
|
|
}
|
|
mFaceNamesInitialized = true;
|
|
mFontPatterns.Clear();
|
|
SetHasStyles(true);
|
|
}
|
|
|
|
void
|
|
gfxFontconfigFontFamily::AddFontPattern(FcPattern* aFontPattern)
|
|
{
|
|
NS_ASSERTION(!mHasStyles,
|
|
"font patterns must not be added to already enumerated families");
|
|
|
|
FcBool outline;
|
|
if (FcPatternGetBool(aFontPattern, FC_OUTLINE, 0, &outline) != FcResultMatch ||
|
|
!outline) {
|
|
mHasNonScalableFaces = true;
|
|
|
|
FcBool scalable;
|
|
if (FcPatternGetBool(aFontPattern, FC_SCALABLE, 0, &scalable) == FcResultMatch &&
|
|
scalable) {
|
|
mForceScalable = true;
|
|
}
|
|
}
|
|
|
|
nsCountedRef<FcPattern> pattern(aFontPattern);
|
|
mFontPatterns.AppendElement(pattern);
|
|
}
|
|
|
|
static const double kRejectDistance = 10000.0;
|
|
|
|
// Calculate a distance score representing the size disparity between the
|
|
// requested style's size and the font entry's size.
|
|
static double
|
|
SizeDistance(gfxFontconfigFontEntry* aEntry,
|
|
const gfxFontStyle& aStyle,
|
|
bool aForceScalable)
|
|
{
|
|
double requestedSize = SizeForStyle(aEntry, aStyle);
|
|
double bestDist = -1.0;
|
|
double size;
|
|
int v = 0;
|
|
while (FcPatternGetDouble(aEntry->GetPattern(),
|
|
FC_PIXEL_SIZE, v, &size) == FcResultMatch) {
|
|
++v;
|
|
double dist = fabs(size - requestedSize);
|
|
if (bestDist < 0.0 || dist < bestDist) {
|
|
bestDist = dist;
|
|
}
|
|
}
|
|
if (bestDist < 0.0) {
|
|
// No size means scalable
|
|
return -1.0;
|
|
} else if (aForceScalable || 5.0 * bestDist < requestedSize) {
|
|
// fontconfig prefers a matching family or lang to pixelsize of bitmap
|
|
// fonts. CSS suggests a tolerance of 20% on pixelsize.
|
|
return bestDist;
|
|
} else {
|
|
// Reject any non-scalable fonts that are not within tolerance.
|
|
return kRejectDistance;
|
|
}
|
|
}
|
|
|
|
void
|
|
gfxFontconfigFontFamily::FindAllFontsForStyle(const gfxFontStyle& aFontStyle,
|
|
nsTArray<gfxFontEntry*>& aFontEntryList,
|
|
bool aIgnoreSizeTolerance)
|
|
{
|
|
gfxFontFamily::FindAllFontsForStyle(aFontStyle,
|
|
aFontEntryList,
|
|
aIgnoreSizeTolerance);
|
|
|
|
if (!mHasNonScalableFaces) {
|
|
return;
|
|
}
|
|
|
|
// Iterate over the the available fonts while compacting any groups
|
|
// of unscalable fonts with matching styles into a single entry
|
|
// corresponding to the closest available size. If the closest
|
|
// available size is rejected for being outside tolerance, then the
|
|
// entire group will be skipped.
|
|
size_t skipped = 0;
|
|
gfxFontconfigFontEntry* bestEntry = nullptr;
|
|
double bestDist = -1.0;
|
|
for (size_t i = 0; i < aFontEntryList.Length(); i++) {
|
|
gfxFontconfigFontEntry* entry =
|
|
static_cast<gfxFontconfigFontEntry*>(aFontEntryList[i]);
|
|
double dist = SizeDistance(entry, aFontStyle,
|
|
mForceScalable || aIgnoreSizeTolerance);
|
|
// If the entry is scalable or has a style that does not match
|
|
// the group of unscalable fonts, then start a new group.
|
|
if (dist < 0.0 ||
|
|
!bestEntry ||
|
|
bestEntry->Stretch() != entry->Stretch() ||
|
|
bestEntry->Weight() != entry->Weight() ||
|
|
bestEntry->SlantStyle() != entry->SlantStyle()) {
|
|
// If the best entry in this group is still outside the tolerance,
|
|
// then skip the entire group.
|
|
if (bestDist >= kRejectDistance) {
|
|
skipped++;
|
|
}
|
|
// Remove any compacted entries from the previous group.
|
|
if (skipped) {
|
|
i -= skipped;
|
|
aFontEntryList.RemoveElementsAt(i, skipped);
|
|
skipped = 0;
|
|
}
|
|
// Mark the start of the new group.
|
|
bestEntry = entry;
|
|
bestDist = dist;
|
|
} else {
|
|
// If this entry more closely matches the requested size than the
|
|
// current best in the group, then take this entry instead.
|
|
if (dist < bestDist) {
|
|
aFontEntryList[i-1-skipped] = entry;
|
|
bestEntry = entry;
|
|
bestDist = dist;
|
|
}
|
|
skipped++;
|
|
}
|
|
}
|
|
// If the best entry in this group is still outside the tolerance,
|
|
// then skip the entire group.
|
|
if (bestDist >= kRejectDistance) {
|
|
skipped++;
|
|
}
|
|
// Remove any compacted entries from the current group.
|
|
if (skipped) {
|
|
aFontEntryList.TruncateLength(aFontEntryList.Length() - skipped);
|
|
}
|
|
}
|
|
|
|
static bool
|
|
PatternHasLang(const FcPattern *aPattern, const FcChar8 *aLang)
|
|
{
|
|
FcLangSet *langset;
|
|
|
|
if (FcPatternGetLangSet(aPattern, FC_LANG, 0, &langset) != FcResultMatch) {
|
|
return false;
|
|
}
|
|
|
|
if (FcLangSetHasLang(langset, aLang) != FcLangDifferentLang) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
gfxFontconfigFontFamily::SupportsLangGroup(nsAtom *aLangGroup) const
|
|
{
|
|
if (!aLangGroup || aLangGroup == nsGkAtoms::Unicode) {
|
|
return true;
|
|
}
|
|
|
|
nsAutoCString fcLang;
|
|
gfxFcPlatformFontList* pfl = gfxFcPlatformFontList::PlatformFontList();
|
|
pfl->GetSampleLangForGroup(aLangGroup, fcLang);
|
|
if (fcLang.IsEmpty()) {
|
|
return true;
|
|
}
|
|
|
|
// Before FindStyleVariations has been called, mFontPatterns will contain
|
|
// the font patterns. Afterward, it'll be empty, but mAvailableFonts
|
|
// will contain the font entries, each of which holds a reference to its
|
|
// pattern. We only check the first pattern in each list, because support
|
|
// for langs is considered to be consistent across all faces in a family.
|
|
FcPattern* fontPattern;
|
|
if (mFontPatterns.Length()) {
|
|
fontPattern = mFontPatterns[0];
|
|
} else if (mAvailableFonts.Length()) {
|
|
fontPattern = static_cast<gfxFontconfigFontEntry*>
|
|
(mAvailableFonts[0].get())->GetPattern();
|
|
} else {
|
|
return true;
|
|
}
|
|
|
|
// is lang included in the underlying pattern?
|
|
return PatternHasLang(fontPattern, ToFcChar8Ptr(fcLang.get()));
|
|
}
|
|
|
|
/* virtual */
|
|
gfxFontconfigFontFamily::~gfxFontconfigFontFamily()
|
|
{
|
|
// Should not be dropped by stylo
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
}
|
|
|
|
template<typename Func>
|
|
void
|
|
gfxFontconfigFontFamily::AddFacesToFontList(Func aAddPatternFunc)
|
|
{
|
|
if (HasStyles()) {
|
|
for (auto& fe : mAvailableFonts) {
|
|
if (!fe) {
|
|
continue;
|
|
}
|
|
auto fce = static_cast<gfxFontconfigFontEntry*>(fe.get());
|
|
aAddPatternFunc(fce->GetPattern(), mContainsAppFonts);
|
|
}
|
|
} else {
|
|
for (auto& pat : mFontPatterns) {
|
|
aAddPatternFunc(pat, mContainsAppFonts);
|
|
}
|
|
}
|
|
}
|
|
|
|
gfxFontconfigFont::gfxFontconfigFont(const RefPtr<UnscaledFontFontconfig>& aUnscaledFont,
|
|
cairo_scaled_font_t *aScaledFont,
|
|
FcPattern *aPattern,
|
|
gfxFloat aAdjustedSize,
|
|
gfxFontEntry *aFontEntry,
|
|
const gfxFontStyle *aFontStyle)
|
|
: gfxFT2FontBase(aUnscaledFont, aScaledFont, aFontEntry, aFontStyle)
|
|
, mPattern(aPattern)
|
|
{
|
|
mAdjustedSize = aAdjustedSize;
|
|
}
|
|
|
|
gfxFontconfigFont::~gfxFontconfigFont()
|
|
{
|
|
}
|
|
|
|
already_AddRefed<ScaledFont>
|
|
gfxFontconfigFont::GetScaledFont(mozilla::gfx::DrawTarget *aTarget)
|
|
{
|
|
if (!mAzureScaledFont) {
|
|
mAzureScaledFont =
|
|
Factory::CreateScaledFontForFontconfigFont(GetCairoScaledFont(),
|
|
GetPattern(),
|
|
GetUnscaledFont(),
|
|
GetAdjustedSize());
|
|
}
|
|
|
|
RefPtr<ScaledFont> scaledFont(mAzureScaledFont);
|
|
return scaledFont.forget();
|
|
}
|
|
|
|
gfxFcPlatformFontList::gfxFcPlatformFontList()
|
|
: mLocalNames(64)
|
|
, mGenericMappings(32)
|
|
, mFcSubstituteCache(64)
|
|
, mLastConfig(nullptr)
|
|
, mAlwaysUseFontconfigGenerics(true)
|
|
{
|
|
if (XRE_IsParentProcess()) {
|
|
// if the rescan interval is set, start the timer
|
|
int rescanInterval = FcConfigGetRescanInterval(nullptr);
|
|
if (rescanInterval) {
|
|
mLastConfig = FcConfigGetCurrent();
|
|
NS_NewTimerWithFuncCallback(getter_AddRefs(mCheckFontUpdatesTimer),
|
|
CheckFontUpdates,
|
|
this,
|
|
(rescanInterval + 1) * 1000,
|
|
nsITimer::TYPE_REPEATING_SLACK,
|
|
"gfxFcPlatformFontList::gfxFcPlatformFontList");
|
|
if (!mCheckFontUpdatesTimer) {
|
|
NS_WARNING("Failure to create font updates timer");
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef MOZ_BUNDLED_FONTS
|
|
mBundledFontsInitialized = false;
|
|
#endif
|
|
}
|
|
|
|
gfxFcPlatformFontList::~gfxFcPlatformFontList()
|
|
{
|
|
if (mCheckFontUpdatesTimer) {
|
|
mCheckFontUpdatesTimer->Cancel();
|
|
mCheckFontUpdatesTimer = nullptr;
|
|
}
|
|
}
|
|
|
|
void
|
|
gfxFcPlatformFontList::AddFontSetFamilies(FcFontSet* aFontSet,
|
|
const SandboxPolicy* aPolicy,
|
|
bool aAppFonts)
|
|
{
|
|
// This iterates over the fonts in a font set and adds in gfxFontFamily
|
|
// objects for each family. Individual gfxFontEntry objects for each face
|
|
// are not created here; the patterns are just stored in the family. When
|
|
// a family is actually used, it will be populated with gfxFontEntry
|
|
// records and the patterns moved to those.
|
|
|
|
if (!aFontSet) {
|
|
NS_WARNING("AddFontSetFamilies called with a null font set.");
|
|
return;
|
|
}
|
|
|
|
FcChar8* lastFamilyName = (FcChar8*)"";
|
|
RefPtr<gfxFontconfigFontFamily> fontFamily;
|
|
nsAutoString familyName;
|
|
for (int f = 0; f < aFontSet->nfont; f++) {
|
|
FcPattern* pattern = aFontSet->fonts[f];
|
|
|
|
// Skip any fonts that aren't readable for us (e.g. due to restrictive
|
|
// file ownership/permissions).
|
|
FcChar8* path;
|
|
if (FcPatternGetString(pattern, FC_FILE, 0, &path) != FcResultMatch) {
|
|
continue;
|
|
}
|
|
if (access(reinterpret_cast<const char*>(path), F_OK | R_OK) != 0) {
|
|
continue;
|
|
}
|
|
|
|
#ifdef MOZ_CONTENT_SANDBOX
|
|
// Skip any fonts that will be blocked by the content-process sandbox
|
|
// policy.
|
|
if (aPolicy && !(aPolicy->Lookup(reinterpret_cast<const char*>(path)) &
|
|
SandboxBroker::Perms::MAY_READ)) {
|
|
continue;
|
|
}
|
|
#endif
|
|
|
|
AddPatternToFontList(pattern, lastFamilyName,
|
|
familyName, fontFamily, aAppFonts);
|
|
}
|
|
}
|
|
|
|
void
|
|
gfxFcPlatformFontList::AddPatternToFontList(FcPattern* aFont,
|
|
FcChar8*& aLastFamilyName,
|
|
nsAString& aFamilyName,
|
|
RefPtr<gfxFontconfigFontFamily>& aFontFamily,
|
|
bool aAppFonts)
|
|
{
|
|
// get canonical name
|
|
uint32_t cIndex = FindCanonicalNameIndex(aFont, FC_FAMILYLANG);
|
|
FcChar8* canonical = nullptr;
|
|
FcPatternGetString(aFont, FC_FAMILY, cIndex, &canonical);
|
|
if (!canonical) {
|
|
return;
|
|
}
|
|
|
|
// same as the last one? no need to add a new family, skip
|
|
if (FcStrCmp(canonical, aLastFamilyName) != 0) {
|
|
aLastFamilyName = canonical;
|
|
|
|
// add new family if one doesn't already exist
|
|
aFamilyName.Truncate();
|
|
AppendUTF8toUTF16(ToCharPtr(canonical), aFamilyName);
|
|
nsAutoString keyName(aFamilyName);
|
|
ToLowerCase(keyName);
|
|
|
|
aFontFamily = static_cast<gfxFontconfigFontFamily*>
|
|
(mFontFamilies.GetWeak(keyName));
|
|
if (!aFontFamily) {
|
|
aFontFamily = new gfxFontconfigFontFamily(aFamilyName);
|
|
mFontFamilies.Put(keyName, aFontFamily);
|
|
}
|
|
// Record if the family contains fonts from the app font set
|
|
// (in which case we won't rely on fontconfig's charmap, due to
|
|
// bug 1276594).
|
|
if (aAppFonts) {
|
|
aFontFamily->SetFamilyContainsAppFonts(true);
|
|
}
|
|
|
|
// Add pointers to other localized family names. Most fonts
|
|
// only have a single name, so the first call to GetString
|
|
// will usually not match
|
|
FcChar8* otherName;
|
|
int n = (cIndex == 0 ? 1 : 0);
|
|
while (FcPatternGetString(aFont, FC_FAMILY, n, &otherName) ==
|
|
FcResultMatch) {
|
|
NS_ConvertUTF8toUTF16 otherFamilyName(ToCharPtr(otherName));
|
|
AddOtherFamilyName(aFontFamily, otherFamilyName);
|
|
n++;
|
|
if (n == int(cIndex)) {
|
|
n++; // skip over canonical name
|
|
}
|
|
}
|
|
}
|
|
|
|
MOZ_ASSERT(aFontFamily, "font must belong to a font family");
|
|
aFontFamily->AddFontPattern(aFont);
|
|
|
|
// map the psname, fullname ==> font family for local font lookups
|
|
nsAutoString psname, fullname;
|
|
GetFaceNames(aFont, aFamilyName, psname, fullname);
|
|
if (!psname.IsEmpty()) {
|
|
ToLowerCase(psname);
|
|
mLocalNames.Put(psname, aFont);
|
|
}
|
|
if (!fullname.IsEmpty()) {
|
|
ToLowerCase(fullname);
|
|
mLocalNames.Put(fullname, aFont);
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
gfxFcPlatformFontList::InitFontListForPlatform()
|
|
{
|
|
#ifdef MOZ_BUNDLED_FONTS
|
|
ActivateBundledFonts();
|
|
#endif
|
|
|
|
mLocalNames.Clear();
|
|
mFcSubstituteCache.Clear();
|
|
|
|
mAlwaysUseFontconfigGenerics = PrefFontListsUseOnlyGenerics();
|
|
mOtherFamilyNamesInitialized = true;
|
|
|
|
if (XRE_IsContentProcess()) {
|
|
// Content process: use the font list passed from the chrome process,
|
|
// because we can't rely on fontconfig in the presence of sandboxing;
|
|
// it may report fonts that we can't actually access.
|
|
|
|
FcChar8* lastFamilyName = (FcChar8*)"";
|
|
RefPtr<gfxFontconfigFontFamily> fontFamily;
|
|
nsAutoString familyName;
|
|
|
|
// Get font list that was passed during XPCOM startup
|
|
// or in an UpdateFontList message.
|
|
auto& fontList = dom::ContentChild::GetSingleton()->SystemFontList();
|
|
|
|
// For fontconfig versions between 2.10.94 and 2.11.1 inclusive,
|
|
// we need to escape any leading space in the charset element,
|
|
// otherwise FcNameParse will fail. :(
|
|
//
|
|
// The bug was introduced on 2013-05-24 by
|
|
// https://cgit.freedesktop.org/fontconfig/commit/?id=cd9b1033a68816a7acfbba1718ba0aa5888f6ec7
|
|
// "Bug 64906 - FcNameParse() should ignore leading whitespace in parameters"
|
|
// because ignoring a leading space in the encoded value of charset
|
|
// causes erroneous decoding of the whole element.
|
|
// This first shipped in version 2.10.94, and was eventually fixed as
|
|
// a side-effect of switching to the "human-readable" representation of
|
|
// charsets on 2014-07-03 in
|
|
// https://cgit.freedesktop.org/fontconfig/commit/?id=e708e97c351d3bc9f7030ef22ac2f007d5114730
|
|
// "Change charset parse/unparse format to be human readable"
|
|
// (with a followup fix next day) which means a leading space is no
|
|
// longer significant. This fix landed after 2.11.1 had been shipped,
|
|
// so the first version tag without the bug is 2.11.91.
|
|
int fcVersion = FcGetVersion();
|
|
bool fcCharsetParseBug = fcVersion >= 21094 && fcVersion <= 21101;
|
|
|
|
for (SystemFontListEntry& fle : fontList) {
|
|
MOZ_ASSERT(fle.type() ==
|
|
SystemFontListEntry::Type::TFontPatternListEntry);
|
|
FontPatternListEntry& fpe(fle);
|
|
nsCString& patternStr = fpe.pattern();
|
|
if (fcCharsetParseBug) {
|
|
int32_t index = patternStr.Find(":charset= ");
|
|
if (index != kNotFound) {
|
|
// insert backslash after the =, before the space
|
|
patternStr.Insert('\\', index + 9);
|
|
}
|
|
}
|
|
FcPattern* pattern =
|
|
FcNameParse((const FcChar8*)patternStr.get());
|
|
AddPatternToFontList(pattern, lastFamilyName, familyName,
|
|
fontFamily, fpe.appFontFamily());
|
|
FcPatternDestroy(pattern);
|
|
}
|
|
|
|
LOG_FONTLIST(("got font list from chrome process: "
|
|
"%u faces in %u families",
|
|
(unsigned)fontList.Length(), mFontFamilies.Count()));
|
|
|
|
fontList.Clear();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
mLastConfig = FcConfigGetCurrent();
|
|
|
|
UniquePtr<SandboxPolicy> policy;
|
|
|
|
#ifdef MOZ_CONTENT_SANDBOX
|
|
// If read sandboxing is enabled, create a temporary SandboxPolicy to
|
|
// check font paths; use a fake PID to avoid picking up any PID-specific
|
|
// rules by accident.
|
|
SandboxBrokerPolicyFactory policyFactory;
|
|
if (GetEffectiveContentSandboxLevel() > 2 &&
|
|
!PR_GetEnv("MOZ_DISABLE_CONTENT_SANDBOX")) {
|
|
policy = policyFactory.GetContentPolicy(-1, false);
|
|
}
|
|
#endif
|
|
|
|
// iterate over available fonts
|
|
FcFontSet* systemFonts = FcConfigGetFonts(nullptr, FcSetSystem);
|
|
AddFontSetFamilies(systemFonts, policy.get(), /* aAppFonts = */ false);
|
|
|
|
#ifdef MOZ_BUNDLED_FONTS
|
|
FcFontSet* appFonts = FcConfigGetFonts(nullptr, FcSetApplication);
|
|
AddFontSetFamilies(appFonts, policy.get(), /* aAppFonts = */ true);
|
|
#endif
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
gfxFcPlatformFontList::ReadSystemFontList(
|
|
InfallibleTArray<SystemFontListEntry>* retValue)
|
|
{
|
|
// Fontconfig versions below 2.9 drop the FC_FILE element in FcNameUnparse
|
|
// (see https://bugs.freedesktop.org/show_bug.cgi?id=26718), so when using
|
|
// an older version, we manually append it to the unparsed pattern.
|
|
if (FcGetVersion() < 20900) {
|
|
for (auto iter = mFontFamilies.Iter(); !iter.Done(); iter.Next()) {
|
|
auto family =
|
|
static_cast<gfxFontconfigFontFamily*>(iter.Data().get());
|
|
family->AddFacesToFontList([&](FcPattern* aPat, bool aAppFonts) {
|
|
char* s = (char*)FcNameUnparse(aPat);
|
|
nsAutoCString patternStr(s);
|
|
free(s);
|
|
if (FcResultMatch ==
|
|
FcPatternGetString(aPat, FC_FILE, 0, (FcChar8**)&s)) {
|
|
patternStr.Append(":file=");
|
|
patternStr.Append(s);
|
|
}
|
|
retValue->AppendElement(FontPatternListEntry(patternStr,
|
|
aAppFonts));
|
|
});
|
|
}
|
|
} else {
|
|
for (auto iter = mFontFamilies.Iter(); !iter.Done(); iter.Next()) {
|
|
auto family =
|
|
static_cast<gfxFontconfigFontFamily*>(iter.Data().get());
|
|
family->AddFacesToFontList([&](FcPattern* aPat, bool aAppFonts) {
|
|
char* s = (char*)FcNameUnparse(aPat);
|
|
nsDependentCString patternStr(s);
|
|
retValue->AppendElement(FontPatternListEntry(patternStr,
|
|
aAppFonts));
|
|
free(s);
|
|
});
|
|
}
|
|
}
|
|
}
|
|
|
|
// For displaying the fontlist in UI, use explicit call to FcFontList. Using
|
|
// FcFontList results in the list containing the localized names as dictated
|
|
// by system defaults.
|
|
static void
|
|
GetSystemFontList(nsTArray<nsString>& aListOfFonts, nsAtom *aLangGroup)
|
|
{
|
|
aListOfFonts.Clear();
|
|
|
|
nsAutoRef<FcPattern> pat(FcPatternCreate());
|
|
if (!pat) {
|
|
return;
|
|
}
|
|
|
|
nsAutoRef<FcObjectSet> os(FcObjectSetBuild(FC_FAMILY, nullptr));
|
|
if (!os) {
|
|
return;
|
|
}
|
|
|
|
// add the lang to the pattern
|
|
nsAutoCString fcLang;
|
|
gfxFcPlatformFontList* pfl = gfxFcPlatformFontList::PlatformFontList();
|
|
pfl->GetSampleLangForGroup(aLangGroup, fcLang);
|
|
if (!fcLang.IsEmpty()) {
|
|
FcPatternAddString(pat, FC_LANG, ToFcChar8Ptr(fcLang.get()));
|
|
}
|
|
|
|
nsAutoRef<FcFontSet> fs(FcFontList(nullptr, pat, os));
|
|
if (!fs) {
|
|
return;
|
|
}
|
|
|
|
for (int i = 0; i < fs->nfont; i++) {
|
|
char *family;
|
|
|
|
if (FcPatternGetString(fs->fonts[i], FC_FAMILY, 0,
|
|
(FcChar8 **) &family) != FcResultMatch)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
// Remove duplicates...
|
|
nsAutoString strFamily;
|
|
AppendUTF8toUTF16(family, strFamily);
|
|
if (aListOfFonts.Contains(strFamily)) {
|
|
continue;
|
|
}
|
|
|
|
aListOfFonts.AppendElement(strFamily);
|
|
}
|
|
|
|
aListOfFonts.Sort();
|
|
}
|
|
|
|
void
|
|
gfxFcPlatformFontList::GetFontList(nsAtom *aLangGroup,
|
|
const nsACString& aGenericFamily,
|
|
nsTArray<nsString>& aListOfFonts)
|
|
{
|
|
// Get the list of font family names using fontconfig
|
|
GetSystemFontList(aListOfFonts, aLangGroup);
|
|
|
|
// Under Linux, the generics "serif", "sans-serif" and "monospace"
|
|
// are included in the pref fontlist. These map to whatever fontconfig
|
|
// decides they should be for a given language, rather than one of the
|
|
// fonts listed in the prefs font lists (e.g. font.name.*, font.name-list.*)
|
|
bool serif = false, sansSerif = false, monospace = false;
|
|
if (aGenericFamily.IsEmpty())
|
|
serif = sansSerif = monospace = true;
|
|
else if (aGenericFamily.LowerCaseEqualsLiteral("serif"))
|
|
serif = true;
|
|
else if (aGenericFamily.LowerCaseEqualsLiteral("sans-serif"))
|
|
sansSerif = true;
|
|
else if (aGenericFamily.LowerCaseEqualsLiteral("monospace"))
|
|
monospace = true;
|
|
else if (aGenericFamily.LowerCaseEqualsLiteral("cursive") ||
|
|
aGenericFamily.LowerCaseEqualsLiteral("fantasy"))
|
|
serif = sansSerif = true;
|
|
else
|
|
NS_NOTREACHED("unexpected CSS generic font family");
|
|
|
|
// The first in the list becomes the default in
|
|
// FontBuilder.readFontSelection() if the preference-selected font is not
|
|
// available, so put system configured defaults first.
|
|
if (monospace)
|
|
aListOfFonts.InsertElementAt(0, NS_LITERAL_STRING("monospace"));
|
|
if (sansSerif)
|
|
aListOfFonts.InsertElementAt(0, NS_LITERAL_STRING("sans-serif"));
|
|
if (serif)
|
|
aListOfFonts.InsertElementAt(0, NS_LITERAL_STRING("serif"));
|
|
}
|
|
|
|
gfxFontFamily*
|
|
gfxFcPlatformFontList::GetDefaultFontForPlatform(const gfxFontStyle* aStyle)
|
|
{
|
|
// Get the default font by using a fake name to retrieve the first
|
|
// scalable font that fontconfig suggests for the given language.
|
|
PrefFontList* prefFonts =
|
|
FindGenericFamilies(NS_LITERAL_STRING("-moz-default"), aStyle->language);
|
|
NS_ASSERTION(prefFonts, "null list of generic fonts");
|
|
if (prefFonts && !prefFonts->IsEmpty()) {
|
|
return (*prefFonts)[0];
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
gfxFontEntry*
|
|
gfxFcPlatformFontList::LookupLocalFont(const nsAString& aFontName,
|
|
WeightRange aWeightForEntry,
|
|
StretchRange aStretchForEntry,
|
|
SlantStyleRange aStyleForEntry)
|
|
{
|
|
nsAutoString keyName(aFontName);
|
|
ToLowerCase(keyName);
|
|
|
|
// if name is not in the global list, done
|
|
FcPattern* fontPattern = mLocalNames.Get(keyName);
|
|
if (!fontPattern) {
|
|
return nullptr;
|
|
}
|
|
|
|
return new gfxFontconfigFontEntry(aFontName, fontPattern,
|
|
aWeightForEntry,
|
|
aStretchForEntry,
|
|
aStyleForEntry);
|
|
}
|
|
|
|
gfxFontEntry*
|
|
gfxFcPlatformFontList::MakePlatformFont(const nsAString& aFontName,
|
|
WeightRange aWeightForEntry,
|
|
StretchRange aStretchForEntry,
|
|
SlantStyleRange aStyleForEntry,
|
|
const uint8_t* aFontData,
|
|
uint32_t aLength)
|
|
{
|
|
FT_Face face = Factory::NewFTFaceFromData(nullptr, aFontData, aLength, 0);
|
|
if (!face) {
|
|
free((void*)aFontData);
|
|
return nullptr;
|
|
}
|
|
if (FT_Err_Ok != FT_Select_Charmap(face, FT_ENCODING_UNICODE)) {
|
|
Factory::ReleaseFTFace(face);
|
|
free((void*)aFontData);
|
|
return nullptr;
|
|
}
|
|
|
|
return new gfxFontconfigFontEntry(aFontName,
|
|
aWeightForEntry,
|
|
aStretchForEntry,
|
|
aStyleForEntry,
|
|
aFontData, aLength, face);
|
|
}
|
|
|
|
bool
|
|
gfxFcPlatformFontList::FindAndAddFamilies(const nsAString& aFamily,
|
|
nsTArray<gfxFontFamily*>* aOutput,
|
|
FindFamiliesFlags aFlags,
|
|
gfxFontStyle* aStyle,
|
|
gfxFloat aDevToCssSize)
|
|
{
|
|
nsAutoString familyName(aFamily);
|
|
ToLowerCase(familyName);
|
|
nsAtom* language = (aStyle ? aStyle->language.get() : nullptr);
|
|
|
|
// deprecated generic names are explicitly converted to standard generics
|
|
bool isDeprecatedGeneric = false;
|
|
if (familyName.EqualsLiteral("sans") ||
|
|
familyName.EqualsLiteral("sans serif")) {
|
|
familyName.AssignLiteral("sans-serif");
|
|
isDeprecatedGeneric = true;
|
|
} else if (familyName.EqualsLiteral("mono")) {
|
|
familyName.AssignLiteral("monospace");
|
|
isDeprecatedGeneric = true;
|
|
}
|
|
|
|
// fontconfig generics? use fontconfig to determine the family for lang
|
|
if (isDeprecatedGeneric ||
|
|
mozilla::FontFamilyName::Convert(familyName).IsGeneric()) {
|
|
PrefFontList* prefFonts = FindGenericFamilies(familyName, language);
|
|
if (prefFonts && !prefFonts->IsEmpty()) {
|
|
aOutput->AppendElements(*prefFonts);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// fontconfig allows conditional substitutions in such a way that it's
|
|
// difficult to distinguish an explicit substitution from other suggested
|
|
// choices. To sniff out explicit substitutions, compare the substitutions
|
|
// for "font, -moz-sentinel" to "-moz-sentinel" to sniff out the
|
|
// substitutions
|
|
//
|
|
// Example:
|
|
//
|
|
// serif ==> DejaVu Serif, ...
|
|
// Helvetica, serif ==> Helvetica, TeX Gyre Heros, Nimbus Sans L, DejaVu Serif
|
|
//
|
|
// In this case fontconfig is including Tex Gyre Heros and
|
|
// Nimbus Sans L as alternatives for Helvetica.
|
|
|
|
// Because the FcConfigSubstitute call is quite expensive, we cache the
|
|
// actual font families found via this process. So check the cache first:
|
|
NS_ConvertUTF16toUTF8 familyToFind(familyName);
|
|
AutoTArray<gfxFontFamily*,10> cachedFamilies;
|
|
if (mFcSubstituteCache.Get(familyToFind, &cachedFamilies)) {
|
|
if (cachedFamilies.IsEmpty()) {
|
|
return false;
|
|
}
|
|
aOutput->AppendElements(cachedFamilies);
|
|
return true;
|
|
}
|
|
|
|
// It wasn't in the cache, so we need to ask fontconfig...
|
|
const FcChar8* kSentinelName = ToFcChar8Ptr("-moz-sentinel");
|
|
FcChar8* sentinelFirstFamily = nullptr;
|
|
nsAutoRef<FcPattern> sentinelSubst(FcPatternCreate());
|
|
FcPatternAddString(sentinelSubst, FC_FAMILY, kSentinelName);
|
|
FcConfigSubstitute(nullptr, sentinelSubst, FcMatchPattern);
|
|
FcPatternGetString(sentinelSubst, FC_FAMILY, 0, &sentinelFirstFamily);
|
|
|
|
// substitutions for font, -moz-sentinel pattern
|
|
nsAutoRef<FcPattern> fontWithSentinel(FcPatternCreate());
|
|
FcPatternAddString(fontWithSentinel, FC_FAMILY,
|
|
ToFcChar8Ptr(familyToFind.get()));
|
|
FcPatternAddString(fontWithSentinel, FC_FAMILY, kSentinelName);
|
|
FcConfigSubstitute(nullptr, fontWithSentinel, FcMatchPattern);
|
|
|
|
// Add all font family matches until reaching the sentinel.
|
|
FcChar8* substName = nullptr;
|
|
for (int i = 0;
|
|
FcPatternGetString(fontWithSentinel, FC_FAMILY,
|
|
i, &substName) == FcResultMatch;
|
|
i++)
|
|
{
|
|
NS_ConvertUTF8toUTF16 subst(ToCharPtr(substName));
|
|
if (sentinelFirstFamily &&
|
|
FcStrCmp(substName, sentinelFirstFamily) == 0) {
|
|
break;
|
|
}
|
|
gfxPlatformFontList::FindAndAddFamilies(subst,
|
|
&cachedFamilies,
|
|
aFlags);
|
|
}
|
|
|
|
// Cache the resulting list, so we don't have to do this again.
|
|
mFcSubstituteCache.Put(familyToFind, cachedFamilies);
|
|
|
|
if (cachedFamilies.IsEmpty()) {
|
|
return false;
|
|
}
|
|
aOutput->AppendElements(cachedFamilies);
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
gfxFcPlatformFontList::GetStandardFamilyName(const nsAString& aFontName,
|
|
nsAString& aFamilyName)
|
|
{
|
|
aFamilyName.Truncate();
|
|
|
|
// The fontconfig list of fonts includes generic family names in the
|
|
// font list. For these, just use the generic name.
|
|
if (aFontName.EqualsLiteral("serif") ||
|
|
aFontName.EqualsLiteral("sans-serif") ||
|
|
aFontName.EqualsLiteral("monospace")) {
|
|
aFamilyName.Assign(aFontName);
|
|
return true;
|
|
}
|
|
|
|
nsAutoRef<FcPattern> pat(FcPatternCreate());
|
|
if (!pat) {
|
|
return true;
|
|
}
|
|
|
|
nsAutoRef<FcObjectSet> os(FcObjectSetBuild(FC_FAMILY, nullptr));
|
|
if (!os) {
|
|
return true;
|
|
}
|
|
|
|
// add the family name to the pattern
|
|
NS_ConvertUTF16toUTF8 familyName(aFontName);
|
|
FcPatternAddString(pat, FC_FAMILY, ToFcChar8Ptr(familyName.get()));
|
|
|
|
nsAutoRef<FcFontSet> givenFS(FcFontList(nullptr, pat, os));
|
|
if (!givenFS) {
|
|
return true;
|
|
}
|
|
|
|
// See if there is a font face with first family equal to the given family
|
|
// (needs to be in sync with names coming from GetFontList())
|
|
nsTArray<nsCString> candidates;
|
|
for (int i = 0; i < givenFS->nfont; i++) {
|
|
char* firstFamily;
|
|
|
|
if (FcPatternGetString(givenFS->fonts[i], FC_FAMILY, 0,
|
|
(FcChar8 **) &firstFamily) != FcResultMatch)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
nsDependentCString first(firstFamily);
|
|
if (!candidates.Contains(first)) {
|
|
candidates.AppendElement(first);
|
|
|
|
if (familyName.Equals(first)) {
|
|
aFamilyName.Assign(aFontName);
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Because fontconfig conflates different family name types, need to
|
|
// double check that the candidate name is not simply a different
|
|
// name type. For example, if a font with nameID=16 "Minion Pro" and
|
|
// nameID=21 "Minion Pro Caption" exists, calling FcFontList with
|
|
// family="Minion Pro" will return a set of patterns some of which
|
|
// will have a first family of "Minion Pro Caption". Ignore these
|
|
// patterns and use the first candidate that maps to a font set with
|
|
// the same number of faces and an identical set of patterns.
|
|
for (uint32_t j = 0; j < candidates.Length(); ++j) {
|
|
FcPatternDel(pat, FC_FAMILY);
|
|
FcPatternAddString(pat, FC_FAMILY, (FcChar8 *)candidates[j].get());
|
|
|
|
nsAutoRef<FcFontSet> candidateFS(FcFontList(nullptr, pat, os));
|
|
if (!candidateFS) {
|
|
return true;
|
|
}
|
|
|
|
if (candidateFS->nfont != givenFS->nfont) {
|
|
continue;
|
|
}
|
|
|
|
bool equal = true;
|
|
for (int i = 0; i < givenFS->nfont; ++i) {
|
|
if (!FcPatternEqual(candidateFS->fonts[i], givenFS->fonts[i])) {
|
|
equal = false;
|
|
break;
|
|
}
|
|
}
|
|
if (equal) {
|
|
AppendUTF8toUTF16(candidates[j], aFamilyName);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// didn't find localized name, leave family name blank
|
|
return true;
|
|
}
|
|
|
|
void
|
|
gfxFcPlatformFontList::AddGenericFonts(mozilla::FontFamilyType aGenericType,
|
|
nsAtom* aLanguage,
|
|
nsTArray<gfxFontFamily*>& aFamilyList)
|
|
{
|
|
bool usePrefFontList = false;
|
|
|
|
// treat -moz-fixed as monospace
|
|
if (aGenericType == eFamily_moz_fixed) {
|
|
aGenericType = eFamily_monospace;
|
|
}
|
|
|
|
const char* generic = GetGenericName(aGenericType);
|
|
NS_ASSERTION(generic, "weird generic font type");
|
|
if (!generic) {
|
|
return;
|
|
}
|
|
|
|
// By default, most font prefs on Linux map to "use fontconfig"
|
|
// keywords. So only need to explicitly lookup font pref if
|
|
// non-default settings exist
|
|
NS_ConvertASCIItoUTF16 genericToLookup(generic);
|
|
if ((!mAlwaysUseFontconfigGenerics && aLanguage) ||
|
|
aLanguage == nsGkAtoms::x_math) {
|
|
nsAtom* langGroup = GetLangGroup(aLanguage);
|
|
nsAutoString fontlistValue;
|
|
Preferences::GetString(NamePref(generic, langGroup).get(),
|
|
fontlistValue);
|
|
nsresult rv;
|
|
if (fontlistValue.IsEmpty()) {
|
|
// The font name list may have two or more family names as comma
|
|
// separated list. In such case, not matching with generic font
|
|
// name is fine because if the list prefers specific font, we
|
|
// should try to use the pref with complicated path.
|
|
rv = Preferences::GetString(NameListPref(generic, langGroup).get(),
|
|
fontlistValue);
|
|
} else {
|
|
rv = NS_OK;
|
|
}
|
|
if (NS_SUCCEEDED(rv)) {
|
|
if (!fontlistValue.EqualsLiteral("serif") &&
|
|
!fontlistValue.EqualsLiteral("sans-serif") &&
|
|
!fontlistValue.EqualsLiteral("monospace")) {
|
|
usePrefFontList = true;
|
|
} else {
|
|
// serif, sans-serif or monospace was specified
|
|
genericToLookup.Assign(fontlistValue);
|
|
}
|
|
}
|
|
}
|
|
|
|
// when pref fonts exist, use standard pref font lookup
|
|
if (usePrefFontList) {
|
|
return gfxPlatformFontList::AddGenericFonts(aGenericType,
|
|
aLanguage,
|
|
aFamilyList);
|
|
}
|
|
|
|
PrefFontList* prefFonts = FindGenericFamilies(genericToLookup, aLanguage);
|
|
NS_ASSERTION(prefFonts, "null generic font list");
|
|
aFamilyList.AppendElements(*prefFonts);
|
|
}
|
|
|
|
void
|
|
gfxFcPlatformFontList::ClearLangGroupPrefFonts()
|
|
{
|
|
ClearGenericMappings();
|
|
gfxPlatformFontList::ClearLangGroupPrefFonts();
|
|
mAlwaysUseFontconfigGenerics = PrefFontListsUseOnlyGenerics();
|
|
}
|
|
|
|
/* static */ FT_Library
|
|
gfxFcPlatformFontList::GetFTLibrary()
|
|
{
|
|
if (!sCairoFTLibrary) {
|
|
// Use cairo's FT_Library so that cairo takes care of shutdown of the
|
|
// FT_Library after it has destroyed its font_faces, and FT_Done_Face
|
|
// has been called on each FT_Face, at least until this bug is fixed:
|
|
// https://bugs.freedesktop.org/show_bug.cgi?id=18857
|
|
//
|
|
// Cairo keeps it's own FT_Library object for creating FT_Face
|
|
// instances, so use that. There's no simple API for accessing this
|
|
// so use the hacky method below of making a font and extracting
|
|
// the library pointer from that.
|
|
|
|
FcPattern* pat =
|
|
FcPatternBuild(0, FC_FAMILY, FcTypeString, "serif", (char*)0);
|
|
cairo_font_face_t* face =
|
|
cairo_ft_font_face_create_for_pattern(pat, nullptr, 0);
|
|
FcPatternDestroy(pat);
|
|
|
|
cairo_matrix_t identity;
|
|
cairo_matrix_init_identity(&identity);
|
|
cairo_font_options_t* options = cairo_font_options_create();
|
|
cairo_scaled_font_t* sf =
|
|
cairo_scaled_font_create(face, &identity, &identity, options);
|
|
cairo_font_options_destroy(options);
|
|
cairo_font_face_destroy(face);
|
|
|
|
FT_Face ft = cairo_ft_scaled_font_lock_face(sf);
|
|
|
|
sCairoFTLibrary = ft->glyph->library;
|
|
|
|
cairo_ft_scaled_font_unlock_face(sf);
|
|
cairo_scaled_font_destroy(sf);
|
|
}
|
|
|
|
return sCairoFTLibrary;
|
|
}
|
|
|
|
gfxPlatformFontList::PrefFontList*
|
|
gfxFcPlatformFontList::FindGenericFamilies(const nsAString& aGeneric,
|
|
nsAtom* aLanguage)
|
|
{
|
|
// set up name
|
|
NS_ConvertUTF16toUTF8 generic(aGeneric);
|
|
|
|
nsAutoCString fcLang;
|
|
GetSampleLangForGroup(aLanguage, fcLang);
|
|
ToLowerCase(fcLang);
|
|
|
|
nsAutoCString genericLang(generic);
|
|
if (fcLang.Length() > 0) {
|
|
genericLang.Append('-');
|
|
}
|
|
genericLang.Append(fcLang);
|
|
|
|
// try to get the family from the cache
|
|
PrefFontList* prefFonts = mGenericMappings.Get(genericLang);
|
|
if (prefFonts) {
|
|
return prefFonts;
|
|
}
|
|
|
|
// if not found, ask fontconfig to pick the appropriate font
|
|
nsAutoRef<FcPattern> genericPattern(FcPatternCreate());
|
|
FcPatternAddString(genericPattern, FC_FAMILY,
|
|
ToFcChar8Ptr(generic.get()));
|
|
|
|
// -- prefer scalable fonts
|
|
FcPatternAddBool(genericPattern, FC_SCALABLE, FcTrue);
|
|
|
|
// -- add the lang to the pattern
|
|
if (!fcLang.IsEmpty()) {
|
|
FcPatternAddString(genericPattern, FC_LANG,
|
|
ToFcChar8Ptr(fcLang.get()));
|
|
}
|
|
|
|
// -- perform substitutions
|
|
FcConfigSubstitute(nullptr, genericPattern, FcMatchPattern);
|
|
FcDefaultSubstitute(genericPattern);
|
|
|
|
// -- sort to get the closest matches
|
|
FcResult result;
|
|
nsAutoRef<FcFontSet> faces(FcFontSort(nullptr, genericPattern, FcFalse,
|
|
nullptr, &result));
|
|
|
|
if (!faces) {
|
|
return nullptr;
|
|
}
|
|
|
|
// -- select the fonts to be used for the generic
|
|
prefFonts = new PrefFontList; // can be empty but in practice won't happen
|
|
uint32_t limit = gfxPlatformGtk::GetPlatform()->MaxGenericSubstitions();
|
|
bool foundFontWithLang = false;
|
|
for (int i = 0; i < faces->nfont; i++) {
|
|
FcPattern* font = faces->fonts[i];
|
|
FcChar8* mappedGeneric = nullptr;
|
|
|
|
FcPatternGetString(font, FC_FAMILY, 0, &mappedGeneric);
|
|
if (mappedGeneric) {
|
|
NS_ConvertUTF8toUTF16 mappedGenericName(ToCharPtr(mappedGeneric));
|
|
AutoTArray<gfxFontFamily*,1> genericFamilies;
|
|
if (gfxPlatformFontList::FindAndAddFamilies(mappedGenericName,
|
|
&genericFamilies,
|
|
FindFamiliesFlags(0))) {
|
|
MOZ_ASSERT(genericFamilies.Length() == 1,
|
|
"expected a single family");
|
|
if (!prefFonts->Contains(genericFamilies[0])) {
|
|
prefFonts->AppendElement(genericFamilies[0]);
|
|
bool foundLang =
|
|
!fcLang.IsEmpty() &&
|
|
PatternHasLang(font, ToFcChar8Ptr(fcLang.get()));
|
|
foundFontWithLang = foundFontWithLang || foundLang;
|
|
// check to see if the list is full
|
|
if (prefFonts->Length() >= limit) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// if no font in the list matches the lang, trim all but the first one
|
|
if (!prefFonts->IsEmpty() && !foundFontWithLang) {
|
|
prefFonts->TruncateLength(1);
|
|
}
|
|
|
|
mGenericMappings.Put(genericLang, prefFonts);
|
|
return prefFonts;
|
|
}
|
|
|
|
bool
|
|
gfxFcPlatformFontList::PrefFontListsUseOnlyGenerics()
|
|
{
|
|
static const char kFontNamePrefix[] = "font.name.";
|
|
|
|
bool prefFontsUseOnlyGenerics = true;
|
|
uint32_t count;
|
|
char** names;
|
|
nsresult rv = Preferences::GetRootBranch()->
|
|
GetChildList(kFontNamePrefix, &count, &names);
|
|
if (NS_SUCCEEDED(rv) && count) {
|
|
for (size_t i = 0; i < count; i++) {
|
|
// Check whether all font.name prefs map to generic keywords
|
|
// and that the pref name and keyword match.
|
|
// Ex: font.name.serif.ar ==> "serif" (ok)
|
|
// Ex: font.name.serif.ar ==> "monospace" (return false)
|
|
// Ex: font.name.serif.ar ==> "DejaVu Serif" (return false)
|
|
// Ex: font.name.serif.ar ==> "" and
|
|
// font.name-list.serif.ar ==> "serif" (ok)
|
|
// Ex: font.name.serif.ar ==> "" and
|
|
// font.name-list.serif.ar ==> "Something, serif"
|
|
// (return false)
|
|
|
|
nsDependentCString prefName(names[i] +
|
|
ArrayLength(kFontNamePrefix) - 1);
|
|
nsCCharSeparatedTokenizer tokenizer(prefName, '.');
|
|
const nsDependentCSubstring& generic = tokenizer.nextToken();
|
|
const nsDependentCSubstring& langGroup = tokenizer.nextToken();
|
|
nsAutoCString fontPrefValue;
|
|
Preferences::GetCString(names[i], fontPrefValue);
|
|
if (fontPrefValue.IsEmpty()) {
|
|
// The font name list may have two or more family names as comma
|
|
// separated list. In such case, not matching with generic font
|
|
// name is fine because if the list prefers specific font, this
|
|
// should return false.
|
|
Preferences::GetCString(NameListPref(generic, langGroup).get(),
|
|
fontPrefValue);
|
|
}
|
|
|
|
if (!langGroup.EqualsLiteral("x-math") &&
|
|
!generic.Equals(fontPrefValue)) {
|
|
prefFontsUseOnlyGenerics = false;
|
|
break;
|
|
}
|
|
}
|
|
NS_FREE_XPCOM_ALLOCATED_POINTER_ARRAY(count, names);
|
|
}
|
|
return prefFontsUseOnlyGenerics;
|
|
}
|
|
|
|
/* static */ void
|
|
gfxFcPlatformFontList::CheckFontUpdates(nsITimer *aTimer, void *aThis)
|
|
{
|
|
// A content process is not supposed to check this directly;
|
|
// it will be notified by the parent when the font list changes.
|
|
MOZ_ASSERT(XRE_IsParentProcess());
|
|
|
|
// check for font updates
|
|
FcInitBringUptoDate();
|
|
|
|
// update fontlist if current config changed
|
|
gfxFcPlatformFontList *pfl = static_cast<gfxFcPlatformFontList*>(aThis);
|
|
FcConfig* current = FcConfigGetCurrent();
|
|
if (current != pfl->GetLastConfig()) {
|
|
pfl->UpdateFontList();
|
|
pfl->ForceGlobalReflow();
|
|
|
|
mozilla::dom::ContentParent::NotifyUpdatedFonts();
|
|
}
|
|
}
|
|
|
|
gfxFontFamily*
|
|
gfxFcPlatformFontList::CreateFontFamily(const nsAString& aName) const
|
|
{
|
|
return new gfxFontconfigFontFamily(aName);
|
|
}
|
|
|
|
#ifdef MOZ_BUNDLED_FONTS
|
|
void
|
|
gfxFcPlatformFontList::ActivateBundledFonts()
|
|
{
|
|
if (!mBundledFontsInitialized) {
|
|
mBundledFontsInitialized = true;
|
|
nsCOMPtr<nsIFile> localDir;
|
|
nsresult rv = NS_GetSpecialDirectory(NS_GRE_DIR, getter_AddRefs(localDir));
|
|
if (NS_FAILED(rv)) {
|
|
return;
|
|
}
|
|
if (NS_FAILED(localDir->Append(NS_LITERAL_STRING("fonts")))) {
|
|
return;
|
|
}
|
|
bool isDir;
|
|
if (NS_FAILED(localDir->IsDirectory(&isDir)) || !isDir) {
|
|
return;
|
|
}
|
|
if (NS_FAILED(localDir->GetNativePath(mBundledFontsPath))) {
|
|
return;
|
|
}
|
|
}
|
|
if (!mBundledFontsPath.IsEmpty()) {
|
|
FcConfigAppFontAddDir(nullptr, ToFcChar8Ptr(mBundledFontsPath.get()));
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef MOZ_WIDGET_GTK
|
|
/***************************************************************************
|
|
*
|
|
* This function must be last in the file because it uses the system cairo
|
|
* library. Above this point the cairo library used is the tree cairo if
|
|
* MOZ_TREE_CAIRO.
|
|
*/
|
|
|
|
#if MOZ_TREE_CAIRO
|
|
// Tree cairo symbols have different names. Disable their activation through
|
|
// preprocessor macros.
|
|
#undef cairo_ft_font_options_substitute
|
|
|
|
// The system cairo functions are not declared because the include paths cause
|
|
// the gdk headers to pick up the tree cairo.h.
|
|
extern "C" {
|
|
NS_VISIBILITY_DEFAULT void
|
|
cairo_ft_font_options_substitute (const cairo_font_options_t *options,
|
|
FcPattern *pattern);
|
|
}
|
|
#endif
|
|
|
|
static void
|
|
ApplyGdkScreenFontOptions(FcPattern *aPattern)
|
|
{
|
|
const cairo_font_options_t *options =
|
|
gdk_screen_get_font_options(gdk_screen_get_default());
|
|
|
|
cairo_ft_font_options_substitute(options, aPattern);
|
|
}
|
|
|
|
#endif // MOZ_WIDGET_GTK
|