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gecko-dev/gfx/thebes/gfxFT2FontList.cpp

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/ArrayUtils.h"
#include "mozilla/Base64.h"
#include "mozilla/FontPropertyTypes.h"
#include "mozilla/MemoryReporting.h"
#include "mozilla/dom/ContentChild.h"
#include "gfxAndroidPlatform.h"
#include "mozilla/Omnijar.h"
#include "mozilla/UniquePtr.h"
#include "mozilla/UniquePtrExtensions.h"
#include "nsIInputStream.h"
#include "nsReadableUtils.h"
#include "nsXULAppAPI.h"
#include <dirent.h>
#include <android/log.h>
#define ALOG(args...) __android_log_print(ANDROID_LOG_INFO, "Gecko" , ## args)
#include "ft2build.h"
#include FT_FREETYPE_H
#include FT_TRUETYPE_TAGS_H
#include FT_TRUETYPE_TABLES_H
#include FT_MULTIPLE_MASTERS_H
#include "cairo-ft.h"
#include "gfxFT2FontList.h"
#include "gfxFT2Fonts.h"
#include "gfxFT2Utils.h"
#include "gfxUserFontSet.h"
#include "gfxFontUtils.h"
#include "nsServiceManagerUtils.h"
#include "nsIObserverService.h"
#include "nsTArray.h"
#include "nsUnicharUtils.h"
#include "nsCRT.h"
#include "nsDirectoryServiceUtils.h"
#include "nsDirectoryServiceDefs.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsISimpleEnumerator.h"
#include "nsIMemory.h"
#include "gfxFontConstants.h"
#include "mozilla/Preferences.h"
#include "mozilla/scache/StartupCache.h"
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/stat.h>
using namespace mozilla;
using namespace mozilla::gfx;
static LazyLogModule sFontInfoLog("fontInfoLog");
#undef LOG
#define LOG(args) MOZ_LOG(sFontInfoLog, mozilla::LogLevel::Debug, args)
#define LOG_ENABLED() MOZ_LOG_TEST(sFontInfoLog, mozilla::LogLevel::Debug)
static cairo_user_data_key_t sFTUserFontDataKey;
static __inline void
BuildKeyNameFromFontName(nsAString &aName)
{
ToLowerCase(aName);
}
// Helper to access the FT_Face for a given FT2FontEntry,
// creating a temporary face if the entry does not have one yet.
// This allows us to read font names, tables, etc if necessary
// without permanently instantiating a freetype face and consuming
// memory long-term.
// This may fail (resulting in a null FT_Face), e.g. if it fails to
// allocate memory to uncompress a font from omnijar.
class AutoFTFace {
public:
explicit AutoFTFace(FT2FontEntry* aFontEntry)
: mFace(nullptr), mFontDataBuf(nullptr), mOwnsFace(false)
{
if (aFontEntry->mFTFace) {
mFace = aFontEntry->mFTFace;
return;
}
NS_ASSERTION(!aFontEntry->mFilename.IsEmpty(),
"can't use AutoFTFace for fonts without a filename");
// A relative path (no initial "/") means this is a resource in
// omnijar, not an installed font on the device.
// The NS_ASSERTIONs here should never fail, as the resource must have
// been read successfully during font-list initialization or we'd never
// have created the font entry. The only legitimate runtime failure
// here would be memory allocation, in which case mFace remains null.
if (aFontEntry->mFilename[0] != '/') {
RefPtr<nsZipArchive> reader =
Omnijar::GetReader(Omnijar::Type::GRE);
nsZipItem *item = reader->GetItem(aFontEntry->mFilename.get());
NS_ASSERTION(item, "failed to find zip entry");
uint32_t bufSize = item->RealSize();
mFontDataBuf = static_cast<uint8_t*>(malloc(bufSize));
if (mFontDataBuf) {
nsZipCursor cursor(item, reader, mFontDataBuf, bufSize);
cursor.Copy(&bufSize);
NS_ASSERTION(bufSize == item->RealSize(),
"error reading bundled font");
mDataLength = bufSize;
mFace = Factory::NewFTFaceFromData(nullptr, mFontDataBuf, bufSize, aFontEntry->mFTFontIndex);
if (!mFace) {
NS_WARNING("failed to create freetype face");
}
}
} else {
mFace = Factory::NewFTFace(nullptr, aFontEntry->mFilename.get(), aFontEntry->mFTFontIndex);
if (!mFace) {
NS_WARNING("failed to create freetype face");
}
}
if (FT_Err_Ok != FT_Select_Charmap(mFace, FT_ENCODING_UNICODE)) {
NS_WARNING("failed to select Unicode charmap");
}
mOwnsFace = true;
}
~AutoFTFace() {
if (mFace && mOwnsFace) {
Factory::ReleaseFTFace(mFace);
if (mFontDataBuf) {
free(mFontDataBuf);
}
}
}
operator FT_Face() { return mFace; }
// If we 'forget' the FT_Face (used when ownership is handed over to Cairo),
// we do -not- free the mFontDataBuf (if used); that also becomes the
// responsibility of the new owner of the face.
FT_Face forget() {
NS_ASSERTION(mOwnsFace, "can't forget() when we didn't own the face");
mOwnsFace = false;
return mFace;
}
const uint8_t* FontData() const { return mFontDataBuf; }
uint32_t DataLength() const { return mDataLength; }
private:
FT_Face mFace;
uint8_t* mFontDataBuf; // Uncompressed data (for fonts stored in a JAR),
// or null for fonts instantiated from a file.
// If non-null, this must survive as long as the
// FT_Face.
uint32_t mDataLength; // Size of mFontDataBuf, if present.
bool mOwnsFace;
};
/*
* FT2FontEntry
* gfxFontEntry subclass corresponding to a specific face that can be
* rendered by freetype. This is associated with a face index in a
* file (normally a .ttf/.otf file holding a single face, but in principle
* there could be .ttc files with multiple faces).
* The FT2FontEntry can create the necessary FT_Face on demand, and can
* then create a Cairo font_face and scaled_font for drawing.
*/
cairo_scaled_font_t *
FT2FontEntry::CreateScaledFont(const gfxFontStyle *aStyle)
{
cairo_font_face_t *cairoFace = CairoFontFace(aStyle);
if (!cairoFace) {
return nullptr;
}
cairo_scaled_font_t *scaledFont = nullptr;
cairo_matrix_t sizeMatrix;
cairo_matrix_t identityMatrix;
// XXX deal with adjusted size
cairo_matrix_init_scale(&sizeMatrix, aStyle->size, aStyle->size);
cairo_matrix_init_identity(&identityMatrix);
cairo_font_options_t *fontOptions = cairo_font_options_create();
if (gfxPlatform::GetPlatform()->RequiresLinearZoom()) {
cairo_font_options_set_hint_metrics(fontOptions, CAIRO_HINT_METRICS_OFF);
}
scaledFont = cairo_scaled_font_create(cairoFace,
&sizeMatrix,
&identityMatrix, fontOptions);
cairo_font_options_destroy(fontOptions);
NS_ASSERTION(cairo_scaled_font_status(scaledFont) == CAIRO_STATUS_SUCCESS,
"Failed to make scaled font");
return scaledFont;
}
FT2FontEntry::~FT2FontEntry()
{
// Do nothing for mFTFace here since FTFontDestroyFunc is called by cairo.
mFTFace = nullptr;
#ifndef ANDROID
if (mFontFace) {
cairo_font_face_destroy(mFontFace);
mFontFace = nullptr;
}
#endif
}
gfxFontEntry*
FT2FontEntry::Clone() const
{
MOZ_ASSERT(!IsUserFont(), "we can only clone installed fonts!");
FT2FontEntry* fe = new FT2FontEntry(Name());
fe->mFilename = mFilename;
fe->mFTFontIndex = mFTFontIndex;
fe->mWeightRange = mWeightRange;
fe->mStretchRange = mStretchRange;
fe->mStyleRange = mStyleRange;
return fe;
}
gfxFont*
FT2FontEntry::CreateFontInstance(const gfxFontStyle *aFontStyle, bool aNeedsBold)
{
cairo_scaled_font_t *scaledFont = CreateScaledFont(aFontStyle);
if (!scaledFont) {
return nullptr;
}
RefPtr<UnscaledFontFreeType> unscaledFont(mUnscaledFont);
if (!unscaledFont) {
unscaledFont =
mFilename.IsEmpty() ?
new UnscaledFontFreeType(mFTFace) :
new UnscaledFontFreeType(mFilename.BeginReading(),
mFTFontIndex);
mUnscaledFont = unscaledFont;
}
gfxFont *font = new gfxFT2Font(unscaledFont, scaledFont, this,
aFontStyle, aNeedsBold);
cairo_scaled_font_destroy(scaledFont);
return font;
}
/* static */
FT2FontEntry*
FT2FontEntry::CreateFontEntry(const nsAString& aFontName,
WeightRange aWeight,
StretchRange aStretch,
SlantStyleRange aStyle,
const uint8_t* aFontData,
uint32_t aLength)
{
// Ownership of aFontData is passed in here; the fontEntry must
// retain it as long as the FT_Face needs it, and ensure it is
// eventually deleted.
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;
}
// Create our FT2FontEntry, which inherits the name of the userfont entry
// as it's not guaranteed that the face has valid names (bug 737315)
FT2FontEntry* fe =
FT2FontEntry::CreateFontEntry(face, nullptr, 0, aFontName,
aFontData, aLength);
if (fe) {
fe->mStyleRange = aStyle;
fe->mWeightRange = aWeight;
fe->mStretchRange = aStretch;
fe->mIsDataUserFont = true;
}
return fe;
}
class FTUserFontData {
public:
FTUserFontData(FT_Face aFace, const uint8_t* aData, uint32_t aLength)
: mFace(aFace), mFontData(aData), mLength(aLength)
{
}
~FTUserFontData()
{
Factory::ReleaseFTFace(mFace);
if (mFontData) {
free((void*)mFontData);
}
}
const uint8_t *FontData() const { return mFontData; }
uint32_t Length() const { return mLength; }
private:
FT_Face mFace;
const uint8_t *mFontData;
uint32_t mLength;
};
static void
FTFontDestroyFunc(void *data)
{
FTUserFontData *userFontData = static_cast<FTUserFontData*>(data);
delete userFontData;
}
/* static */
FT2FontEntry*
FT2FontEntry::CreateFontEntry(const FontListEntry& aFLE)
{
FT2FontEntry *fe = new FT2FontEntry(aFLE.faceName());
fe->mFilename = aFLE.filepath();
fe->mFTFontIndex = aFLE.index();
fe->mWeightRange = WeightRange::FromScalar(aFLE.weightRange());
fe->mStretchRange = StretchRange::FromScalar(aFLE.stretchRange());
fe->mStyleRange = SlantStyleRange::FromScalar(aFLE.styleRange());
return fe;
}
// Helpers to extract font entry properties from an FT_Face
static bool
FTFaceIsItalic(FT_Face aFace)
{
return !!(aFace->style_flags & FT_STYLE_FLAG_ITALIC);
}
static FontWeight
FTFaceGetWeight(FT_Face aFace)
{
TT_OS2 *os2 = static_cast<TT_OS2*>(FT_Get_Sfnt_Table(aFace, ft_sfnt_os2));
uint16_t os2weight = 0;
if (os2 && os2->version != 0xffff) {
// Technically, only 100 to 900 are valid, but some fonts
// have this set wrong -- e.g. "Microsoft Logo Bold Italic" has
// it set to 6 instead of 600. We try to be nice and handle that
// as well.
if (os2->usWeightClass >= 100 && os2->usWeightClass <= 900) {
os2weight = os2->usWeightClass;
} else if (os2->usWeightClass >= 1 && os2->usWeightClass <= 9) {
os2weight = os2->usWeightClass * 100;
}
}
uint16_t result;
if (os2weight != 0) {
result = os2weight;
} else if (aFace->style_flags & FT_STYLE_FLAG_BOLD) {
result = 700;
} else {
result = 400;
}
NS_ASSERTION(result >= 100 && result <= 900, "Invalid weight in font!");
return FontWeight(int(result));
}
// Used to create the font entry for installed faces on the device,
// when iterating over the fonts directories.
// We use the FT_Face to retrieve the details needed for the font entry,
// but unless we have been passed font data (i.e. for a user font),
// we do *not* save a reference to it, nor create a cairo face,
// as we don't want to keep a freetype face for every installed font
// permanently in memory.
/* static */
FT2FontEntry*
FT2FontEntry::CreateFontEntry(FT_Face aFace,
const char* aFilename, uint8_t aIndex,
const nsAString& aName,
const uint8_t* aFontData,
uint32_t aLength)
{
FT2FontEntry *fe = new FT2FontEntry(aName);
fe->mStyleRange = SlantStyleRange(FTFaceIsItalic(aFace)
? FontSlantStyle::Italic()
: FontSlantStyle::Normal());
fe->mWeightRange = WeightRange(FTFaceGetWeight(aFace));
fe->mFilename = aFilename;
fe->mFTFontIndex = aIndex;
if (aFontData) {
fe->mFTFace = aFace;
int flags = gfxPlatform::GetPlatform()->FontHintingEnabled() ?
FT_LOAD_DEFAULT :
(FT_LOAD_NO_AUTOHINT | FT_LOAD_NO_HINTING);
fe->mFontFace = cairo_ft_font_face_create_for_ft_face(aFace, flags, nullptr, 0);
FTUserFontData *userFontData = new FTUserFontData(aFace, aFontData, aLength);
cairo_font_face_set_user_data(fe->mFontFace, &sFTUserFontDataKey,
userFontData, FTFontDestroyFunc);
}
return fe;
}
// construct font entry name for an installed font from names in the FT_Face,
// and then create our FT2FontEntry
static FT2FontEntry*
CreateNamedFontEntry(FT_Face aFace, const char* aFilename, uint8_t aIndex)
{
if (!aFace->family_name) {
return nullptr;
}
nsAutoString fontName;
AppendUTF8toUTF16(aFace->family_name, fontName);
if (aFace->style_name && strcmp("Regular", aFace->style_name)) {
fontName.Append(' ');
AppendUTF8toUTF16(aFace->style_name, fontName);
}
return FT2FontEntry::CreateFontEntry(aFace, aFilename, aIndex, fontName);
}
FT2FontEntry*
gfxFT2Font::GetFontEntry()
{
return static_cast<FT2FontEntry*> (mFontEntry.get());
}
cairo_font_face_t *
FT2FontEntry::CairoFontFace(const gfxFontStyle* aStyle)
{
// Create our basic (no-variations) mFontFace if not already present;
// this also ensures we have mFTFace available.
if (!mFontFace) {
AutoFTFace face(this);
if (!face) {
return nullptr;
}
int flags = gfxPlatform::GetPlatform()->FontHintingEnabled() ?
FT_LOAD_DEFAULT :
(FT_LOAD_NO_AUTOHINT | FT_LOAD_NO_HINTING);
mFontFace = cairo_ft_font_face_create_for_ft_face(face, flags,
nullptr, 0);
auto userFontData = new FTUserFontData(face, face.FontData(),
face.DataLength());
cairo_font_face_set_user_data(mFontFace, &sFTUserFontDataKey,
userFontData, FTFontDestroyFunc);
mFTFace = face.forget();
}
// If variations are present, we will not use our cached mFontFace
// but always create a new cairo_font_face_t because its FT_Face will
// have custom variation coordinates applied.
if ((!mVariationSettings.IsEmpty() ||
(aStyle && !aStyle->variationSettings.IsEmpty())) &&
(mFTFace->face_flags & FT_FACE_FLAG_MULTIPLE_MASTERS)) {
int flags = gfxPlatform::GetPlatform()->FontHintingEnabled() ?
FT_LOAD_DEFAULT :
(FT_LOAD_NO_AUTOHINT | FT_LOAD_NO_HINTING);
// Resolve variations from entry (descriptor) and style (property)
AutoTArray<gfxFontVariation,8> settings;
GetVariationsForStyle(settings, aStyle ? *aStyle : gfxFontStyle());
AutoTArray<FT_Fixed,8> coords;
gfxFT2FontBase::SetupVarCoords(mFTFace, settings, &coords);
// Create a separate FT_Face because we need to apply custom
// variation settings to it.
FT_Face ftFace;
if (!mFilename.IsEmpty()) {
ftFace = Factory::NewFTFace(nullptr, mFilename.get(), mFTFontIndex);
} else {
auto ufd = reinterpret_cast<FTUserFontData*>(
cairo_font_face_get_user_data(mFontFace, &sFTUserFontDataKey));
ftFace = Factory::NewFTFaceFromData(nullptr, ufd->FontData(),
ufd->Length(), mFTFontIndex);
}
// The variation coordinates will actually be applied to ftFace by
// gfxFT2FontBase::InitMetrics, so we don't need to do it here.
cairo_font_face_t* cairoFace =
cairo_ft_font_face_create_for_ft_face(ftFace, flags,
coords.Elements(),
coords.Length());
// Set up user data to properly release the FT_Face when the cairo face
// is deleted.
static cairo_user_data_key_t sDestroyFaceKey;
if (cairo_font_face_set_user_data(cairoFace, &sDestroyFaceKey, ftFace,
(cairo_destroy_func_t)&Factory::ReleaseFTFace)) {
// set_user_data failed! discard, and fall back to default face
cairo_font_face_destroy(cairoFace);
FT_Done_Face(ftFace);
} else {
return cairoFace;
}
}
return mFontFace;
}
// Copied/modified from similar code in gfxMacPlatformFontList.mm:
// Complex scripts will not render correctly unless Graphite or OT
// layout tables are present.
// For OpenType, we also check that the GSUB table supports the relevant
// script tag, to avoid using things like Arial Unicode MS for Lao (it has
// the characters, but lacks OpenType support).
// TODO: consider whether we should move this to gfxFontEntry and do similar
// cmap-masking on all platforms to avoid using fonts that won't shape
// properly.
nsresult
FT2FontEntry::ReadCMAP(FontInfoData *aFontInfoData)
{
if (mCharacterMap) {
return NS_OK;
}
RefPtr<gfxCharacterMap> charmap = new gfxCharacterMap();
AutoTArray<uint8_t, 16384> buffer;
nsresult rv = CopyFontTable(TTAG_cmap, buffer);
if (NS_SUCCEEDED(rv)) {
rv = gfxFontUtils::ReadCMAP(buffer.Elements(), buffer.Length(),
*charmap, mUVSOffset);
}
if (NS_SUCCEEDED(rv) && !mIsDataUserFont && !HasGraphiteTables()) {
// For downloadable fonts, trust the author and don't
// try to munge the cmap based on script shaping support.
// We also assume a Graphite font knows what it's doing,
// and provides whatever shaping is needed for the
// characters it supports, so only check/clear the
// complex-script ranges for non-Graphite fonts
// for layout support, check for the presence of opentype layout tables
bool hasGSUB = HasFontTable(TRUETYPE_TAG('G','S','U','B'));
for (const ScriptRange* sr = gfxPlatformFontList::sComplexScriptRanges;
sr->rangeStart; sr++) {
// check to see if the cmap includes complex script codepoints
if (charmap->TestRange(sr->rangeStart, sr->rangeEnd)) {
// We check for GSUB here, as GPOS alone would not be ok.
if (hasGSUB && SupportsScriptInGSUB(sr->tags)) {
continue;
}
charmap->ClearRange(sr->rangeStart, sr->rangeEnd);
}
}
}
#ifdef MOZ_WIDGET_ANDROID
// Hack for the SamsungDevanagari font, bug 1012365:
// pretend the font supports U+0972.
if (!charmap->test(0x0972) &&
charmap->test(0x0905) && charmap->test(0x0945)) {
charmap->set(0x0972);
}
#endif
mHasCmapTable = NS_SUCCEEDED(rv);
if (mHasCmapTable) {
gfxPlatformFontList *pfl = gfxPlatformFontList::PlatformFontList();
mCharacterMap = pfl->FindCharMap(charmap);
} else {
// if error occurred, initialize to null cmap
mCharacterMap = new gfxCharacterMap();
}
return rv;
}
nsresult
FT2FontEntry::CopyFontTable(uint32_t aTableTag, nsTArray<uint8_t>& aBuffer)
{
AutoFTFace face(this);
if (!face) {
return NS_ERROR_FAILURE;
}
FT_Error status;
FT_ULong len = 0;
status = FT_Load_Sfnt_Table(face, aTableTag, 0, nullptr, &len);
if (status != FT_Err_Ok || len == 0) {
return NS_ERROR_FAILURE;
}
if (!aBuffer.SetLength(len, fallible)) {
return NS_ERROR_OUT_OF_MEMORY;
}
uint8_t *buf = aBuffer.Elements();
status = FT_Load_Sfnt_Table(face, aTableTag, 0, buf, &len);
NS_ENSURE_TRUE(status == FT_Err_Ok, NS_ERROR_FAILURE);
return NS_OK;
}
hb_blob_t*
FT2FontEntry::GetFontTable(uint32_t aTableTag)
{
if (mFontFace) {
// if there's a cairo font face, we may be able to return a blob
// that just wraps a range of the attached user font data
FTUserFontData *userFontData = static_cast<FTUserFontData*>(
cairo_font_face_get_user_data(mFontFace, &sFTUserFontDataKey));
if (userFontData && userFontData->FontData()) {
return gfxFontUtils::GetTableFromFontData(userFontData->FontData(),
aTableTag);
}
}
// otherwise, use the default method (which in turn will call our
// implementation of CopyFontTable)
return gfxFontEntry::GetFontTable(aTableTag);
}
void
FT2FontEntry::AddSizeOfExcludingThis(MallocSizeOf aMallocSizeOf,
FontListSizes* aSizes) const
{
gfxFontEntry::AddSizeOfExcludingThis(aMallocSizeOf, aSizes);
aSizes->mFontListSize +=
mFilename.SizeOfExcludingThisIfUnshared(aMallocSizeOf);
}
void
FT2FontEntry::AddSizeOfIncludingThis(MallocSizeOf aMallocSizeOf,
FontListSizes* aSizes) const
{
aSizes->mFontListSize += aMallocSizeOf(this);
AddSizeOfExcludingThis(aMallocSizeOf, aSizes);
}
/*
* FT2FontFamily
* A standard gfxFontFamily; just adds a method used to support sending
* the font list from chrome to content via IPC.
*/
void
FT2FontFamily::AddFacesToFontList(InfallibleTArray<FontListEntry>* aFontList)
{
for (int i = 0, n = mAvailableFonts.Length(); i < n; ++i) {
const FT2FontEntry *fe =
static_cast<const FT2FontEntry*>(mAvailableFonts[i].get());
if (!fe) {
continue;
}
aFontList->AppendElement(FontListEntry(Name(),
fe->Name(),
fe->mFilename,
fe->Weight().AsScalar(),
fe->Stretch().AsScalar(),
fe->SlantStyle().AsScalar(),
fe->mFTFontIndex));
}
}
/*
* Startup cache support for the font list:
* We store the list of families and faces, with their style attributes and the
* corresponding font files, in the startup cache.
* This allows us to recreate the gfxFT2FontList collection of families and
* faces without instantiating Freetype faces for each font file (in order to
* find their attributes), leading to significantly quicker startup.
*/
#define CACHE_KEY "font.cached-list"
class FontNameCache {
public:
// Creates the object but does NOT load the cached data from the startup
// cache; call Init() after creation to do that.
FontNameCache()
: mMap(&mOps, sizeof(FNCMapEntry), 0)
, mWriteNeeded(false)
{
// HACK ALERT: it's weird to assign |mOps| after we passed a pointer to
// it to |mMap|'s constructor. A more normal approach here would be to
// have a static |sOps| member. Unfortunately, this mysteriously but
// consistently makes Fennec start-up slower, so we take this
// unorthodox approach instead. It's safe because PLDHashTable's
// constructor doesn't dereference the pointer; it just makes a copy of
// it.
mOps = (PLDHashTableOps) {
StringHash,
HashMatchEntry,
MoveEntry,
PLDHashTable::ClearEntryStub,
nullptr
};
MOZ_ASSERT(XRE_IsParentProcess(),
"FontNameCache should only be used in chrome process");
mCache = mozilla::scache::StartupCache::GetSingleton();
}
~FontNameCache()
{
if (!mWriteNeeded || !mCache) {
return;
}
nsAutoCString buf;
for (auto iter = mMap.Iter(); !iter.Done(); iter.Next()) {
auto entry = static_cast<FNCMapEntry*>(iter.Get());
if (!entry->mFileExists) {
// skip writing entries for files that are no longer present
continue;
}
buf.Append(entry->mFilename);
buf.Append(';');
buf.Append(entry->mFaces);
buf.Append(';');
buf.AppendInt(entry->mTimestamp);
buf.Append(';');
buf.AppendInt(entry->mFilesize);
buf.Append(';');
}
mCache->PutBuffer(CACHE_KEY,
UniquePtr<char[]>(ToNewCString(buf)), buf.Length() + 1);
}
// This may be called more than once (if we re-load the font list).
void Init()
{
if (!mCache) {
return;
}
uint32_t size;
UniquePtr<char[]> buf;
if (NS_FAILED(mCache->GetBuffer(CACHE_KEY, &buf, &size))) {
return;
}
LOG(("got: %s from the cache", nsDependentCString(buf.get(), size).get()));
mMap.Clear();
mWriteNeeded = false;
const char* beginning = buf.get();
const char* end = strchr(beginning, ';');
while (end) {
nsCString filename(beginning, end - beginning);
beginning = end + 1;
if (!(end = strchr(beginning, ';'))) {
break;
}
nsCString faceList(beginning, end - beginning);
beginning = end + 1;
if (!(end = strchr(beginning, ';'))) {
break;
}
uint32_t timestamp = strtoul(beginning, nullptr, 10);
beginning = end + 1;
if (!(end = strchr(beginning, ';'))) {
break;
}
uint32_t filesize = strtoul(beginning, nullptr, 10);
auto mapEntry =
static_cast<FNCMapEntry*>(mMap.Add(filename.get(), fallible));
if (mapEntry) {
mapEntry->mFilename.Assign(filename);
mapEntry->mTimestamp = timestamp;
mapEntry->mFilesize = filesize;
mapEntry->mFaces.Assign(faceList);
// entries from the startupcache are marked "non-existing"
// until we have confirmed that the file still exists
mapEntry->mFileExists = false;
}
beginning = end + 1;
end = strchr(beginning, ';');
}
}
void
GetInfoForFile(const nsCString& aFileName, nsCString& aFaceList,
uint32_t *aTimestamp, uint32_t *aFilesize)
{
auto entry = static_cast<FNCMapEntry*>(mMap.Search(aFileName.get()));
if (entry) {
*aTimestamp = entry->mTimestamp;
*aFilesize = entry->mFilesize;
aFaceList.Assign(entry->mFaces);
// this entry does correspond to an existing file
// (although it might not be up-to-date, in which case
// it will get overwritten via CacheFileInfo)
entry->mFileExists = true;
}
}
void
CacheFileInfo(const nsCString& aFileName, const nsCString& aFaceList,
uint32_t aTimestamp, uint32_t aFilesize)
{
auto entry =
static_cast<FNCMapEntry*>(mMap.Add(aFileName.get(), fallible));
if (entry) {
entry->mFilename.Assign(aFileName);
entry->mTimestamp = aTimestamp;
entry->mFilesize = aFilesize;
entry->mFaces.Assign(aFaceList);
entry->mFileExists = true;
}
mWriteNeeded = true;
}
private:
mozilla::scache::StartupCache* mCache;
PLDHashTable mMap;
bool mWriteNeeded;
PLDHashTableOps mOps;
typedef struct : public PLDHashEntryHdr {
public:
nsCString mFilename;
uint32_t mTimestamp;
uint32_t mFilesize;
nsCString mFaces;
bool mFileExists;
} FNCMapEntry;
static PLDHashNumber StringHash(const void *key)
{
return HashString(reinterpret_cast<const char*>(key));
}
static bool HashMatchEntry(const PLDHashEntryHdr *aHdr, const void *key)
{
const FNCMapEntry* entry =
static_cast<const FNCMapEntry*>(aHdr);
return entry->mFilename.Equals(reinterpret_cast<const char*>(key));
}
static void MoveEntry(PLDHashTable *table, const PLDHashEntryHdr *aFrom,
PLDHashEntryHdr *aTo)
{
FNCMapEntry* to = static_cast<FNCMapEntry*>(aTo);
const FNCMapEntry* from = static_cast<const FNCMapEntry*>(aFrom);
to->mFilename.Assign(from->mFilename);
to->mTimestamp = from->mTimestamp;
to->mFilesize = from->mFilesize;
to->mFaces.Assign(from->mFaces);
to->mFileExists = from->mFileExists;
}
};
/***************************************************************
*
* gfxFT2FontList
*
*/
// For Mobile, we use gfxFT2Fonts, and we build the font list by directly
// scanning the system's Fonts directory for OpenType and TrueType files.
#define JAR_LAST_MODIFED_TIME "jar-last-modified-time"
class WillShutdownObserver : public nsIObserver
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
explicit WillShutdownObserver(gfxFT2FontList* aFontList)
: mFontList(aFontList)
{ }
protected:
virtual ~WillShutdownObserver()
{ }
gfxFT2FontList *mFontList;
};
NS_IMPL_ISUPPORTS(WillShutdownObserver, nsIObserver)
NS_IMETHODIMP
WillShutdownObserver::Observe(nsISupports *aSubject,
const char *aTopic,
const char16_t *aData)
{
if (!nsCRT::strcmp(aTopic, NS_XPCOM_WILL_SHUTDOWN_OBSERVER_ID)) {
mFontList->WillShutdown();
} else {
NS_NOTREACHED("unexpected notification topic");
}
return NS_OK;
}
gfxFT2FontList::gfxFT2FontList()
: mJarModifiedTime(0)
{
nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
if (obs) {
mObserver = new WillShutdownObserver(this);
obs->AddObserver(mObserver, NS_XPCOM_WILL_SHUTDOWN_OBSERVER_ID, false);
}
}
gfxFT2FontList::~gfxFT2FontList()
{
if (mObserver) {
nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
if (obs) {
obs->RemoveObserver(mObserver, NS_XPCOM_WILL_SHUTDOWN_OBSERVER_ID);
}
mObserver = nullptr;
}
}
void
gfxFT2FontList::AppendFacesFromCachedFaceList(
const nsCString& aFileName,
const nsCString& aFaceList,
StandardFile aStdFile)
{
const char *beginning = aFaceList.get();
const char *end = strchr(beginning, ',');
while (end) {
NS_ConvertUTF8toUTF16 familyName(beginning, end - beginning);
ToLowerCase(familyName);
beginning = end + 1;
if (!(end = strchr(beginning, ','))) {
break;
}
NS_ConvertUTF8toUTF16 faceName(beginning, end - beginning);
beginning = end + 1;
if (!(end = strchr(beginning, ','))) {
break;
}
uint32_t index = strtoul(beginning, nullptr, 10);
beginning = end + 1;
if (!(end = strchr(beginning, ','))) {
break;
}
nsAutoCString minStyle(beginning, end - beginning);
nsAutoCString maxStyle(minStyle);
int32_t colon = minStyle.FindChar(':');
if (colon > 0) {
maxStyle.Assign(minStyle.BeginReading() + colon + 1);
minStyle.Truncate(colon - 1);
}
beginning = end + 1;
if (!(end = strchr(beginning, ','))) {
break;
}
char* limit;
float minWeight = strtof(beginning, &limit);
float maxWeight;
if (*limit == ':' && limit + 1 < end) {
maxWeight = strtof(limit + 1, nullptr);
} else {
maxWeight = minWeight;
}
beginning = end + 1;
if (!(end = strchr(beginning, ','))) {
break;
}
float minStretch = strtof(beginning, &limit);
float maxStretch;
if (*limit == ':' && limit + 1 < end) {
maxStretch = strtof(limit + 1, nullptr);
} else {
maxStretch = minStretch;
}
FontListEntry fle(
familyName, faceName, aFileName,
WeightRange(FontWeight(minWeight),
FontWeight(maxWeight)).AsScalar(),
StretchRange(FontStretch(minStretch),
FontStretch(maxStretch)).AsScalar(),
SlantStyleRange(FontSlantStyle::FromString(minStyle.get()),
FontSlantStyle::FromString(maxStyle.get())).AsScalar(),
index);
AppendFaceFromFontListEntry(fle, aStdFile);
beginning = end + 1;
end = strchr(beginning, ',');
}
}
static void
AppendToFaceList(nsCString& aFaceList,
nsAString& aFamilyName, FT2FontEntry* aFontEntry)
{
aFaceList.Append(NS_ConvertUTF16toUTF8(aFamilyName));
aFaceList.Append(',');
aFaceList.Append(NS_ConvertUTF16toUTF8(aFontEntry->Name()));
aFaceList.Append(',');
aFaceList.AppendInt(aFontEntry->mFTFontIndex);
aFaceList.Append(',');
aFaceList.Append(aFontEntry->IsItalic() ? '1' : '0');
aFaceList.Append(',');
aFaceList.AppendFloat(aFontEntry->Weight().Min().ToFloat());
aFaceList.Append(':');
aFaceList.AppendFloat(aFontEntry->Weight().Max().ToFloat());
aFaceList.Append(',');
aFaceList.AppendFloat(aFontEntry->Stretch().Min().Percentage());
aFaceList.Append(':');
aFaceList.AppendFloat(aFontEntry->Stretch().Max().Percentage());
aFaceList.Append(',');
}
void
FT2FontEntry::CheckForBrokenFont(gfxFontFamily *aFamily)
{
// note if the family is in the "bad underline" blacklist
if (aFamily->IsBadUnderlineFamily()) {
mIsBadUnderlineFont = true;
}
// bug 721719 - set the IgnoreGSUB flag on entries for Roboto
// because of unwanted on-by-default "ae" ligature.
// (See also AppendFaceFromFontListEntry.)
if (aFamily->Name().EqualsLiteral("roboto")) {
mIgnoreGSUB = true;
}
// bug 706888 - set the IgnoreGSUB flag on the broken version of
// Droid Sans Arabic from certain phones, as identified by the
// font checksum in the 'head' table
else if (aFamily->Name().EqualsLiteral("droid sans arabic")) {
AutoFTFace face(this);
if (face) {
const TT_Header *head = static_cast<const TT_Header*>
(FT_Get_Sfnt_Table(face, ft_sfnt_head));
if (head && head->CheckSum_Adjust == 0xe445242) {
mIgnoreGSUB = true;
}
}
}
}
void
gfxFT2FontList::AppendFacesFromFontFile(const nsCString& aFileName,
FontNameCache *aCache,
StandardFile aStdFile)
{
nsCString cachedFaceList;
uint32_t filesize = 0, timestamp = 0;
if (aCache) {
aCache->GetInfoForFile(aFileName, cachedFaceList, &timestamp, &filesize);
}
struct stat s;
int statRetval = stat(aFileName.get(), &s);
if (!cachedFaceList.IsEmpty() && 0 == statRetval &&
uint32_t(s.st_mtime) == timestamp && s.st_size == filesize)
{
LOG(("using cached font info for %s", aFileName.get()));
AppendFacesFromCachedFaceList(aFileName, cachedFaceList, aStdFile);
return;
}
FT_Face dummy = Factory::NewFTFace(nullptr, aFileName.get(), -1);
if (dummy) {
LOG(("reading font info via FreeType for %s", aFileName.get()));
nsCString newFaceList;
timestamp = s.st_mtime;
filesize = s.st_size;
for (FT_Long i = 0; i < dummy->num_faces; i++) {
FT_Face face = Factory::NewFTFace(nullptr, aFileName.get(), i);
if (!face) {
continue;
}
AddFaceToList(aFileName, i, aStdFile, face, newFaceList);
Factory::ReleaseFTFace(face);
}
Factory::ReleaseFTFace(dummy);
if (aCache && 0 == statRetval && !newFaceList.IsEmpty()) {
aCache->CacheFileInfo(aFileName, newFaceList, timestamp, filesize);
}
}
}
void
gfxFT2FontList::FindFontsInOmnijar(FontNameCache *aCache)
{
bool jarChanged = false;
mozilla::scache::StartupCache* cache =
mozilla::scache::StartupCache::GetSingleton();
UniquePtr<char[]> cachedModifiedTimeBuf;
uint32_t longSize;
if (cache &&
NS_SUCCEEDED(cache->GetBuffer(JAR_LAST_MODIFED_TIME,
&cachedModifiedTimeBuf,
&longSize)) &&
longSize == sizeof(int64_t))
{
nsCOMPtr<nsIFile> jarFile = Omnijar::GetPath(Omnijar::Type::GRE);
jarFile->GetLastModifiedTime(&mJarModifiedTime);
if (mJarModifiedTime > *(int64_t*)cachedModifiedTimeBuf.get()) {
jarChanged = true;
}
}
static const char* sJarSearchPaths[] = {
"res/fonts/*.ttf$",
};
RefPtr<nsZipArchive> reader = Omnijar::GetReader(Omnijar::Type::GRE);
for (unsigned i = 0; i < ArrayLength(sJarSearchPaths); i++) {
nsZipFind* find;
if (NS_SUCCEEDED(reader->FindInit(sJarSearchPaths[i], &find))) {
const char* path;
uint16_t len;
while (NS_SUCCEEDED(find->FindNext(&path, &len))) {
nsCString entryName(path, len);
AppendFacesFromOmnijarEntry(reader, entryName, aCache,
jarChanged);
}
delete find;
}
}
}
// Given the freetype face corresponding to an entryName and face index,
// add the face to the available font list and to the faceList string
void
gfxFT2FontList::AddFaceToList(const nsCString& aEntryName, uint32_t aIndex,
StandardFile aStdFile,
FT_Face aFace,
nsCString& aFaceList)
{
if (FT_Err_Ok != FT_Select_Charmap(aFace, FT_ENCODING_UNICODE)) {
// ignore faces that don't support a Unicode charmap
return;
}
// build the font entry name and create an FT2FontEntry,
// but do -not- keep a reference to the FT_Face
RefPtr<FT2FontEntry> fe =
CreateNamedFontEntry(aFace, aEntryName.get(), aIndex);
if (fe) {
NS_ConvertUTF8toUTF16 name(aFace->family_name);
BuildKeyNameFromFontName(name);
RefPtr<gfxFontFamily> family = mFontFamilies.GetWeak(name);
if (!family) {
family = new FT2FontFamily(name);
mFontFamilies.Put(name, family);
if (mSkipSpaceLookupCheckFamilies.Contains(name)) {
family->SetSkipSpaceFeatureCheck(true);
}
if (mBadUnderlineFamilyNames.Contains(name)) {
family->SetBadUnderlineFamily();
}
}
fe->mStandardFace = (aStdFile == kStandard);
family->AddFontEntry(fe);
fe->CheckForBrokenFont(family);
AppendToFaceList(aFaceList, name, fe);
if (LOG_ENABLED()) {
nsAutoCString weightString;
fe->Weight().ToString(weightString);
nsAutoCString stretchString;
fe->Stretch().ToString(stretchString);
LOG(("(fontinit) added (%s) to family (%s)"
" with style: %s weight: %s stretch: %s",
NS_ConvertUTF16toUTF8(fe->Name()).get(),
NS_ConvertUTF16toUTF8(family->Name()).get(),
fe->IsItalic() ? "italic" : "normal",
weightString.get(),
stretchString.get()));
}
}
}
void
gfxFT2FontList::AppendFacesFromOmnijarEntry(nsZipArchive* aArchive,
const nsCString& aEntryName,
FontNameCache *aCache,
bool aJarChanged)
{
nsCString faceList;
if (aCache && !aJarChanged) {
uint32_t filesize, timestamp;
aCache->GetInfoForFile(aEntryName, faceList, &timestamp, &filesize);
if (faceList.Length() > 0) {
AppendFacesFromCachedFaceList(aEntryName, faceList);
return;
}
}
nsZipItem *item = aArchive->GetItem(aEntryName.get());
NS_ASSERTION(item, "failed to find zip entry");
uint32_t bufSize = item->RealSize();
// We use fallible allocation here; if there's not enough RAM, we'll simply
// ignore the bundled fonts and fall back to the device's installed fonts.
auto buf = MakeUniqueFallible<uint8_t[]>(bufSize);
if (!buf) {
return;
}
nsZipCursor cursor(item, aArchive, buf.get(), bufSize);
uint8_t* data = cursor.Copy(&bufSize);
NS_ASSERTION(data && bufSize == item->RealSize(),
"error reading bundled font");
if (!data) {
return;
}
FT_Face dummy = Factory::NewFTFaceFromData(nullptr, buf.get(), bufSize, 0);
if (!dummy) {
return;
}
for (FT_Long i = 0; i < dummy->num_faces; i++) {
FT_Face face = Factory::NewFTFaceFromData(nullptr, buf.get(), bufSize, i);
if (!face) {
continue;
}
AddFaceToList(aEntryName, i, kStandard, face, faceList);
Factory::ReleaseFTFace(face);
}
Factory::ReleaseFTFace(dummy);
if (aCache && !faceList.IsEmpty()) {
aCache->CacheFileInfo(aEntryName, faceList, 0, bufSize);
}
}
// Called on each family after all fonts are added to the list;
// this will sort faces to give priority to "standard" font files
// if aUserArg is non-null (i.e. we're using it as a boolean flag)
static void
FinalizeFamilyMemberList(nsStringHashKey::KeyType aKey,
RefPtr<gfxFontFamily>& aFamily,
bool aSortFaces)
{
gfxFontFamily *family = aFamily.get();
family->SetHasStyles(true);
if (aSortFaces) {
family->SortAvailableFonts();
}
family->CheckForSimpleFamily();
}
void
gfxFT2FontList::FindFonts()
{
gfxFontCache *fc = gfxFontCache::GetCache();
if (fc)
fc->AgeAllGenerations();
ClearLangGroupPrefFonts();
mCodepointsWithNoFonts.reset();
mCodepointsWithNoFonts.SetRange(0,0x1f); // C0 controls
mCodepointsWithNoFonts.SetRange(0x7f,0x9f); // C1 controls
if (!XRE_IsParentProcess()) {
// Content process: ask the Chrome process to give us the list
InfallibleTArray<FontListEntry> fonts;
mozilla::dom::ContentChild::GetSingleton()->SendReadFontList(&fonts);
for (uint32_t i = 0, n = fonts.Length(); i < n; ++i) {
// We don't need to identify "standard" font files here,
// as the faces are already sorted.
AppendFaceFromFontListEntry(fonts[i], kUnknown);
}
// Passing null for userdata tells Finalize that it does not need
// to sort faces (because they were already sorted by chrome,
// so we just maintain the existing order)
for (auto iter = mFontFamilies.Iter(); !iter.Done(); iter.Next()) {
nsStringHashKey::KeyType key = iter.Key();
RefPtr<gfxFontFamily>& family = iter.Data();
FinalizeFamilyMemberList(key, family, /* aSortFaces */ false);
}
LOG(("got font list from chrome process: %" PRIdPTR " faces in %"
PRIu32 " families",
fonts.Length(), mFontFamilies.Count()));
return;
}
// Chrome process: get the cached list (if any)
if (!mFontNameCache) {
mFontNameCache = MakeUnique<FontNameCache>();
}
mFontNameCache->Init();
// ANDROID_ROOT is the root of the android system, typically /system;
// font files are in /$ANDROID_ROOT/fonts/
nsCString root;
char *androidRoot = PR_GetEnv("ANDROID_ROOT");
if (androidRoot) {
root = androidRoot;
} else {
root = NS_LITERAL_CSTRING("/system");
}
root.AppendLiteral("/fonts");
FindFontsInDir(root, mFontNameCache.get());
if (mFontFamilies.Count() == 0) {
// if we can't find/read the font directory, we are doomed!
MOZ_CRASH("Could not read the system fonts directory");
}
// Look for fonts stored in omnijar, unless we're on a low-memory
// device where we don't want to spend the RAM to decompress them.
// (Prefs may disable this, or force-enable it even with low memory.)
bool lowmem;
nsCOMPtr<nsIMemory> mem = nsMemory::GetGlobalMemoryService();
if ((NS_SUCCEEDED(mem->IsLowMemoryPlatform(&lowmem)) && !lowmem &&
Preferences::GetBool("gfx.bundled_fonts.enabled")) ||
Preferences::GetBool("gfx.bundled_fonts.force-enabled")) {
FindFontsInOmnijar(mFontNameCache.get());
}
// Look for downloaded fonts in a profile-agnostic "fonts" directory.
nsCOMPtr<nsIProperties> dirSvc =
do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID);
if (dirSvc) {
nsCOMPtr<nsIFile> appDir;
nsresult rv = dirSvc->Get(NS_XPCOM_CURRENT_PROCESS_DIR,
NS_GET_IID(nsIFile), getter_AddRefs(appDir));
if (NS_SUCCEEDED(rv)) {
appDir->AppendNative(NS_LITERAL_CSTRING("fonts"));
nsCString localPath;
if (NS_SUCCEEDED(appDir->GetNativePath(localPath))) {
FindFontsInDir(localPath, mFontNameCache.get());
}
}
}
// look for locally-added fonts in a "fonts" subdir of the profile
nsCOMPtr<nsIFile> localDir;
nsresult rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_LOCAL_50_DIR,
getter_AddRefs(localDir));
if (NS_SUCCEEDED(rv) &&
NS_SUCCEEDED(localDir->Append(NS_LITERAL_STRING("fonts")))) {
nsCString localPath;
rv = localDir->GetNativePath(localPath);
if (NS_SUCCEEDED(rv)) {
FindFontsInDir(localPath, mFontNameCache.get());
}
}
// Finalize the families by sorting faces into standard order
// and marking "simple" families.
// Passing non-null userData here says that we want faces to be sorted.
for (auto iter = mFontFamilies.Iter(); !iter.Done(); iter.Next()) {
nsStringHashKey::KeyType key = iter.Key();
RefPtr<gfxFontFamily>& family = iter.Data();
FinalizeFamilyMemberList(key, family, /* aSortFaces */ true);
}
}
void
gfxFT2FontList::FindFontsInDir(const nsCString& aDir,
FontNameCache *aFNC)
{
static const char* sStandardFonts[] = {
"DroidSans.ttf",
"DroidSans-Bold.ttf",
"DroidSerif-Regular.ttf",
"DroidSerif-Bold.ttf",
"DroidSerif-Italic.ttf",
"DroidSerif-BoldItalic.ttf",
"DroidSansMono.ttf",
"DroidSansArabic.ttf",
"DroidSansHebrew.ttf",
"DroidSansThai.ttf",
"MTLmr3m.ttf",
"MTLc3m.ttf",
"NanumGothic.ttf",
"DroidSansJapanese.ttf",
"DroidSansFallback.ttf"
};
DIR *d = opendir(aDir.get());
if (!d) {
return;
}
struct dirent *ent = nullptr;
while ((ent = readdir(d)) != nullptr) {
const char *ext = strrchr(ent->d_name, '.');
if (!ext) {
continue;
}
if (strcasecmp(ext, ".ttf") == 0 ||
strcasecmp(ext, ".otf") == 0 ||
strcasecmp(ext, ".woff") == 0 ||
strcasecmp(ext, ".ttc") == 0) {
bool isStdFont = false;
for (unsigned int i = 0;
i < ArrayLength(sStandardFonts) && !isStdFont; i++) {
isStdFont = strcmp(sStandardFonts[i], ent->d_name) == 0;
}
nsCString s(aDir);
s.Append('/');
s.Append(ent->d_name);
// Add the face(s) from this file to our font list;
// note that if we have cached info for this file in fnc,
// and the file is unchanged, we won't actually need to read it.
// If the file is new/changed, this will update the FontNameCache.
AppendFacesFromFontFile(s, aFNC, isStdFont ? kStandard : kUnknown);
}
}
closedir(d);
}
void
gfxFT2FontList::AppendFaceFromFontListEntry(const FontListEntry& aFLE,
StandardFile aStdFile)
{
FT2FontEntry* fe = FT2FontEntry::CreateFontEntry(aFLE);
if (fe) {
fe->mStandardFace = (aStdFile == kStandard);
nsAutoString name(aFLE.familyName());
RefPtr<gfxFontFamily> family = mFontFamilies.GetWeak(name);
if (!family) {
family = new FT2FontFamily(name);
mFontFamilies.Put(name, family);
if (mSkipSpaceLookupCheckFamilies.Contains(name)) {
family->SetSkipSpaceFeatureCheck(true);
}
if (mBadUnderlineFamilyNames.Contains(name)) {
family->SetBadUnderlineFamily();
}
}
family->AddFontEntry(fe);
fe->CheckForBrokenFont(family);
}
}
void
gfxFT2FontList::GetSystemFontList(InfallibleTArray<FontListEntry>* retValue)
{
for (auto iter = mFontFamilies.Iter(); !iter.Done(); iter.Next()) {
auto family = static_cast<FT2FontFamily*>(iter.Data().get());
family->AddFacesToFontList(retValue);
}
}
static void
LoadSkipSpaceLookupCheck(nsTHashtable<nsStringHashKey>& aSkipSpaceLookupCheck)
{
AutoTArray<nsString, 5> skiplist;
gfxFontUtils::GetPrefsFontList(
"font.whitelist.skip_default_features_space_check",
skiplist);
uint32_t numFonts = skiplist.Length();
for (uint32_t i = 0; i < numFonts; i++) {
ToLowerCase(skiplist[i]);
aSkipSpaceLookupCheck.PutEntry(skiplist[i]);
}
}
nsresult
gfxFT2FontList::InitFontListForPlatform()
{
LoadSkipSpaceLookupCheck(mSkipSpaceLookupCheckFamilies);
FindFonts();
return NS_OK;
}
// called for each family name, based on the assumption that the
// first part of the full name is the family name
gfxFontEntry*
gfxFT2FontList::LookupLocalFont(const nsAString& aFontName,
WeightRange aWeightForEntry,
StretchRange aStretchForEntry,
SlantStyleRange aStyleForEntry)
{
// walk over list of names
FT2FontEntry* fontEntry = nullptr;
nsString fullName(aFontName);
for (auto iter = mFontFamilies.Iter(); !iter.Done(); iter.Next()) {
// Check family name, based on the assumption that the
// first part of the full name is the family name
RefPtr<gfxFontFamily>& fontFamily = iter.Data();
// does the family name match up to the length of the family name?
const nsString& family = fontFamily->Name();
nsString fullNameFamily;
fullName.Left(fullNameFamily, family.Length());
// if so, iterate over faces in this family to see if there is a match
if (family.Equals(fullNameFamily, nsCaseInsensitiveStringComparator())) {
nsTArray<RefPtr<gfxFontEntry> >& fontList = fontFamily->GetFontList();
int index, len = fontList.Length();
for (index = 0; index < len; index++) {
gfxFontEntry* fe = fontList[index];
if (!fe) {
continue;
}
if (fe->Name().Equals(fullName,
nsCaseInsensitiveStringComparator())) {
fontEntry = static_cast<FT2FontEntry*>(fe);
goto searchDone;
}
}
}
}
searchDone:
if (!fontEntry) {
return nullptr;
}
// Clone the font entry so that we can then set its style descriptors
// from the userfont entry rather than the actual font.
// Ensure existence of mFTFace in the original entry
fontEntry->CairoFontFace();
if (!fontEntry->mFTFace) {
return nullptr;
}
FT2FontEntry* fe =
FT2FontEntry::CreateFontEntry(fontEntry->mFTFace,
fontEntry->mFilename.get(),
fontEntry->mFTFontIndex,
fontEntry->Name(), nullptr);
if (fe) {
fe->mStyleRange = aStyleForEntry;
fe->mWeightRange = aWeightForEntry;
fe->mStretchRange = aStretchForEntry;
fe->mIsLocalUserFont = true;
}
return fe;
}
gfxFontFamily*
gfxFT2FontList::GetDefaultFontForPlatform(const gfxFontStyle* aStyle)
{
gfxFontFamily *ff = nullptr;
#if defined(MOZ_WIDGET_ANDROID)
ff = FindFamily(NS_LITERAL_STRING("Roboto"));
if (!ff) {
ff = FindFamily(NS_LITERAL_STRING("Droid Sans"));
}
#endif
/* TODO: what about Qt or other platforms that may use this? */
return ff;
}
gfxFontEntry*
gfxFT2FontList::MakePlatformFont(const nsAString& aFontName,
WeightRange aWeightForEntry,
StretchRange aStretchForEntry,
SlantStyleRange aStyleForEntry,
const uint8_t* aFontData,
uint32_t aLength)
{
// The FT2 font needs the font data to persist, so we do NOT free it here
// but instead pass ownership to the font entry.
// Deallocation will happen later, when the font face is destroyed.
return FT2FontEntry::CreateFontEntry(aFontName,
aWeightForEntry,
aStretchForEntry,
aStyleForEntry,
aFontData, aLength);
}
void
gfxFT2FontList::GetFontFamilyList(nsTArray<RefPtr<gfxFontFamily> >& aFamilyArray)
{
for (auto iter = mFontFamilies.Iter(); !iter.Done(); iter.Next()) {
RefPtr<gfxFontFamily>& family = iter.Data();
aFamilyArray.AppendElement(family);
}
}
gfxFontFamily*
gfxFT2FontList::CreateFontFamily(const nsAString& aName) const
{
return new FT2FontFamily(aName);
}
void
gfxFT2FontList::WillShutdown()
{
mozilla::scache::StartupCache* cache =
mozilla::scache::StartupCache::GetSingleton();
if (cache && mJarModifiedTime > 0) {
const size_t bufSize = sizeof(mJarModifiedTime);
auto buf = MakeUnique<char[]>(bufSize);
memcpy(buf.get(), &mJarModifiedTime, bufSize);
cache->PutBuffer(JAR_LAST_MODIFED_TIME,
Move(buf), bufSize);
}
mFontNameCache = nullptr;
}
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