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0aac0cc47c
gecko/gfx/thebes/gfxAndroidPlatform.cpp
Makoto Kato 0aac0cc47c Bug 644054 - Support WOFF on Android; r=jfkthame
2011-03-22 21:40:00 -04:00

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Android port code.
*
* The Initial Developer of the Original Code is
* Mozilla Foundation
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Vladimir Vukicevic <vladimir@pobox.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifdef MOZ_IPC
#include "mozilla/dom/ContentChild.h"
#include "nsXULAppAPI.h"
#endif
#include <android/log.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include "gfxAndroidPlatform.h"
#include "cairo.h"
#include "cairo-ft.h"
#include "gfxImageSurface.h"
#include "nsUnicharUtils.h"
#include "nsMathUtils.h"
#include "nsTArray.h"
#include "qcms.h"
#include "ft2build.h"
#include FT_FREETYPE_H
#include "gfxFT2Fonts.h"
#include "gfxPlatformFontList.h"
#include "gfxFT2FontList.h"
#include "mozilla/scache/StartupCache.h"
#include "nsXPCOMStrings.h"
using namespace mozilla;
using namespace dom;
static FT_Library gPlatformFTLibrary = NULL;
#define LOG(args...) __android_log_print(ANDROID_LOG_INFO, "GeckoFonts" , ## args)
gfxAndroidPlatform::gfxAndroidPlatform()
{
FT_Init_FreeType(&gPlatformFTLibrary);
mFonts.Init(200);
mFontAliases.Init(20);
mFontSubstitutes.Init(50);
mPrefFonts.Init(10);
UpdateFontList();
}
gfxAndroidPlatform::~gfxAndroidPlatform()
{
cairo_debug_reset_static_data();
FT_Done_FreeType(gPlatformFTLibrary);
gPlatformFTLibrary = NULL;
}
already_AddRefed<gfxASurface>
gfxAndroidPlatform::CreateOffscreenSurface(const gfxIntSize& size,
gfxASurface::gfxContentType contentType)
{
nsRefPtr<gfxASurface> newSurface;
if (contentType == gfxImageSurface::CONTENT_COLOR)
newSurface = new gfxImageSurface (size, GetOffscreenFormat());
else
newSurface = new gfxImageSurface (size, gfxASurface::FormatFromContent(contentType));
return newSurface.forget();
}
struct FontListData {
FontListData(nsIAtom *aLangGroup, const nsACString& aGenericFamily, nsTArray<nsString>& aListOfFonts) :
mLangGroup(aLangGroup), mGenericFamily(aGenericFamily), mStringArray(aListOfFonts) {}
nsIAtom *mLangGroup;
const nsACString& mGenericFamily;
nsTArray<nsString>& mStringArray;
};
static PLDHashOperator
FontListHashEnumFunc(nsStringHashKey::KeyType aKey,
nsRefPtr<FontFamily>& aFontFamily,
void* userArg)
{
FontListData *data = (FontListData*)userArg;
// use the first variation for now. This data should be the same
// for all the variations and should probably be moved up to
// the Family
gfxFontStyle style;
style.language = data->mLangGroup;
nsRefPtr<FontEntry> aFontEntry = aFontFamily->FindFontEntry(style);
NS_ASSERTION(aFontEntry, "couldn't find any font entry in family");
if (!aFontEntry)
return PL_DHASH_NEXT;
data->mStringArray.AppendElement(aFontFamily->Name());
return PL_DHASH_NEXT;
}
nsresult
gfxAndroidPlatform::GetFontList(nsIAtom *aLangGroup,
const nsACString& aGenericFamily,
nsTArray<nsString>& aListOfFonts)
{
FontListData data(aLangGroup, aGenericFamily, aListOfFonts);
mFonts.Enumerate(FontListHashEnumFunc, &data);
aListOfFonts.Sort();
aListOfFonts.Compact();
return NS_OK;
}
class FontNameCache {
public:
typedef nsAutoTArray<PRUint32, 8> IndexList;
PLDHashTableOps ops;
FontNameCache() : mWriteNeeded(PR_FALSE) {
ops = {
PL_DHashAllocTable,
PL_DHashFreeTable,
StringHash,
HashMatchEntry,
MoveEntry,
PL_DHashClearEntryStub,
PL_DHashFinalizeStub,
NULL};
if (!PL_DHashTableInit(&mMap, &ops, nsnull,
sizeof(FNCMapEntry), 0)) {
mMap.ops = nsnull;
LOG("initializing the map failed");
}
#ifdef MOZ_IPC
NS_ABORT_IF_FALSE(XRE_GetProcessType() == GeckoProcessType_Default,
"StartupCacheFontNameCache should only be used in chrome procsess");
#endif
mCache = mozilla::scache::StartupCache::GetSingleton();
Init();
}
void Init()
{
if (!mMap.ops || !mCache)
return;
nsCAutoString prefName("font.cache");
PRUint32 size;
char* buf;
if (NS_FAILED(mCache->GetBuffer(prefName.get(), &buf, &size)))
return;
LOG("got: %s from the cache", nsDependentCString(buf, size).get());
char* entry = strtok(buf, ";");
while (entry) {
nsCString faceList, filename, indexes;
PRUint32 timestamp, fileSize;
filename.Assign(entry);
entry = strtok(NULL, ";");
if (!entry)
break;
faceList.Assign(entry);
entry = strtok(NULL, ";");
if (!entry)
break;
char* endptr;
timestamp = strtoul(entry, &endptr, 10);
if (*endptr != '\0')
break;
entry = strtok(NULL, ";");
if (!entry)
break;
fileSize = strtoul(entry, &endptr, 10);
if (*endptr != '\0')
break;
entry = strtok(NULL, ";");
if (!entry)
break;
indexes.Assign(entry);
FNCMapEntry* mapEntry =
static_cast<FNCMapEntry*>
(PL_DHashTableOperate(&mMap, filename.get(), PL_DHASH_ADD));
if (mapEntry) {
mapEntry->mFilename = filename;
mapEntry->mTimestamp = timestamp;
mapEntry->mFilesize = fileSize;
mapEntry->mFaces.AssignWithConversion(faceList);
mapEntry->mIndexes = indexes;
}
entry = strtok(NULL, ";");
}
free(buf);
}
virtual void
GetInfoForFile(nsCString& aFileName, nsAString& aFaceList,
PRUint32 *aTimestamp, PRUint32 *aFileSize,
IndexList &aIndexList)
{
if (!mMap.ops)
return;
PLDHashEntryHdr *hdr = PL_DHashTableOperate(&mMap, aFileName.get(), PL_DHASH_LOOKUP);
if (!hdr)
return;
FNCMapEntry* entry = static_cast<FNCMapEntry*>(hdr);
if (entry && entry->mTimestamp && entry->mFilesize) {
*aTimestamp = entry->mTimestamp;
*aFileSize = entry->mFilesize;
char* indexes = const_cast<char*>(entry->mIndexes.get());
char* endptr = indexes + 1;
unsigned long index = strtoul(indexes, &endptr, 10);
while (indexes < endptr && indexes[0] != '\0') {
aIndexList.AppendElement(index);
indexes = endptr + 1;
}
aFaceList.Assign(entry->mFaces);
}
}
virtual void
CacheFileInfo(nsCString& aFileName, nsAString& aFaceList,
PRUint32 aTimestamp, PRUint32 aFileSize,
IndexList &aIndexList)
{
if (!mMap.ops)
return;
FNCMapEntry* entry =
static_cast<FNCMapEntry*>
(PL_DHashTableOperate(&mMap, aFileName.get(), PL_DHASH_ADD));
if (entry) {
entry->mFilename = aFileName;
entry->mTimestamp = aTimestamp;
entry->mFilesize = aFileSize;
entry->mFaces.Assign(aFaceList);
for (PRUint32 i = 0; i < aIndexList.Length(); i++) {
entry->mIndexes.AppendInt(aIndexList[i]);
entry->mIndexes.Append(",");
}
}
mWriteNeeded = PR_TRUE;
}
~FontNameCache() {
if (!mMap.ops)
return;
if (!mWriteNeeded || !mCache) {
PL_DHashTableFinish(&mMap);
return;
}
nsCAutoString buf;
PL_DHashTableEnumerate(&mMap, WriteOutMap, &buf);
PL_DHashTableFinish(&mMap);
nsCAutoString prefName("font.cache");
mCache->PutBuffer(prefName.get(), buf.get(), buf.Length() + 1);
}
private:
mozilla::scache::StartupCache* mCache;
PLDHashTable mMap;
PRBool mWriteNeeded;
static PLDHashOperator WriteOutMap(PLDHashTable *aTable,
PLDHashEntryHdr *aHdr,
PRUint32 aNumber, void *aData)
{
nsCAutoString* buf = (nsCAutoString*)aData;
FNCMapEntry* entry = static_cast<FNCMapEntry*>(aHdr);
buf->Append(entry->mFilename);
buf->Append(";");
buf->AppendWithConversion(entry->mFaces);
buf->Append(";");
buf->AppendInt(entry->mTimestamp);
buf->Append(";");
buf->AppendInt(entry->mFilesize);
buf->Append(";");
buf->Append(entry->mIndexes);
buf->Append(";");
return PL_DHASH_NEXT;
}
typedef struct : public PLDHashEntryHdr {
public:
nsCString mFilename;
PRUint32 mTimestamp;
PRUint32 mFilesize;
nsString mFaces;
nsCString mIndexes;
} FNCMapEntry;
static PLDHashNumber StringHash(PLDHashTable *table, const void *key) {
PLDHashNumber h = 0;
for (const char *s = reinterpret_cast<const char*>(key); *s; ++s)
h = PR_ROTATE_LEFT32(h, 4) ^ NS_ToLower(*s);
return h;
}
static PRBool HashMatchEntry(PLDHashTable *table,
const PLDHashEntryHdr *aHdr, const void *key)
{
const FNCMapEntry* entry =
static_cast<const FNCMapEntry*>(aHdr);
return entry->mFilename.Equals((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->mIndexes.Assign(from->mIndexes);
}
};
void
gfxAndroidPlatform::AppendFacesFromFontFile(const char *aFileName, FontNameCache* aFontCache, InfallibleTArray<FontListEntry>* aFontList)
{
nsString faceList;
PRUint32 timestamp = 0;
PRUint32 filesize = 0;
FontNameCache::IndexList indexList;
nsCString fileName(aFileName);
if (aFontCache)
aFontCache->GetInfoForFile(fileName, faceList, &timestamp, &filesize, indexList);
struct stat s;
int stat_ret = stat(aFileName, &s);
if (!faceList.IsEmpty() && indexList.Length() && 0 == stat_ret &&
s.st_mtime == timestamp && s.st_size == filesize) {
PRInt32 beginning = 0;
PRInt32 end = faceList.Find(",", PR_TRUE, beginning, -1);
for (PRUint32 i = 0; i < indexList.Length() && end != kNotFound; i++) {
nsDependentSubstring name(faceList, beginning, end);
ToLowerCase(name);
FontListEntry fle(NS_ConvertUTF16toUTF8(name), fileName,
indexList[i]);
aFontList->AppendElement(fle);
beginning = end + 1;
end = faceList.Find(",", PR_TRUE, beginning, -1);
}
return;
}
faceList.AssignLiteral("");
timestamp = s.st_mtime;
filesize = s.st_size;
FT_Face dummy;
if (FT_Err_Ok == FT_New_Face(GetFTLibrary(), aFileName, -1, &dummy)) {
for (FT_Long i = 0; i < dummy->num_faces; i++) {
FT_Face face;
if (FT_Err_Ok != FT_New_Face(GetFTLibrary(), aFileName,
i, &face))
continue;
nsDependentCString name(face->family_name);
ToLowerCase(name);
nsRefPtr<FontFamily> ff;
faceList.AppendWithConversion(name);
faceList.AppendLiteral(",");
indexList.AppendElement(i);
ToLowerCase(name);
FontListEntry fle(name, fileName, i);
aFontList->AppendElement(fle);
}
FT_Done_Face(dummy);
if (aFontCache && 0 == stat_ret)
aFontCache->CacheFileInfo(fileName, faceList, timestamp, filesize, indexList);
}
}
void
gfxAndroidPlatform::FindFontsInDirectory(const nsCString& aFontsDir,
FontNameCache* aFontCache)
{
DIR *d = opendir(aFontsDir.get());
struct dirent *ent = NULL;
while(d && (ent = readdir(d)) != NULL) {
int namelen = strlen(ent->d_name);
if (namelen > 4 &&
strcasecmp(ent->d_name + namelen - 4, ".ttf") == 0)
{
nsCString s(aFontsDir);
s.Append(nsDependentCString(ent->d_name));
AppendFacesFromFontFile(nsPromiseFlatCString(s).get(),
aFontCache, &mFontList);
}
}
closedir(d);
}
void
gfxAndroidPlatform::GetFontList(InfallibleTArray<FontListEntry>* retValue)
{
#ifdef MOZ_IPC
if (XRE_GetProcessType() != GeckoProcessType_Default) {
mozilla::dom::ContentChild::GetSingleton()->SendReadFontList(retValue);
return;
}
#endif
if (mFontList.Length() > 0) {
*retValue = mFontList;
return;
}
// ANDROID_ROOT is the root of the android system, typically /system
// font files are in /$ANDROID_ROOT/fonts/
FontNameCache fnc;
FindFontsInDirectory(NS_LITERAL_CSTRING("/system/fonts/"), &fnc);
char *androidRoot = PR_GetEnv("ANDROID_ROOT");
if (androidRoot && strcmp(androidRoot, "/system")) {
nsCString root(androidRoot);
root.Append("/fonts/");
FindFontsInDirectory(root, &fnc);
}
*retValue = mFontList;
}
nsresult
gfxAndroidPlatform::UpdateFontList()
{
gfxFontCache *fc = gfxFontCache::GetCache();
if (fc)
fc->AgeAllGenerations();
mFonts.Clear();
mFontAliases.Clear();
mFontSubstitutes.Clear();
mPrefFonts.Clear();
mCodepointsWithNoFonts.reset();
InfallibleTArray<FontListEntry> fontList;
GetFontList(&fontList);
for (PRUint32 i = 0; i < fontList.Length(); i++) {
NS_ConvertUTF8toUTF16 name(fontList[i].familyName());
nsRefPtr<FontFamily> ff;
if (!mFonts.Get(name, &ff)) {
ff = new FontFamily(name);
mFonts.Put(name, ff);
}
ff->AddFontFileAndIndex(fontList[i].filepath(), fontList[i].index());
}
// initialize the cmap loading process after font list has been initialized
//StartLoader(kDelayBeforeLoadingCmaps, kIntervalBetweenLoadingCmaps);
// initialize ranges of characters for which system-wide font search should be skipped
mCodepointsWithNoFonts.SetRange(0,0x1f); // C0 controls
mCodepointsWithNoFonts.SetRange(0x7f,0x9f); // C1 controls
return NS_OK;
}
nsresult
gfxAndroidPlatform::ResolveFontName(const nsAString& aFontName,
FontResolverCallback aCallback,
void *aClosure,
PRBool& aAborted)
{
if (aFontName.IsEmpty())
return NS_ERROR_FAILURE;
nsAutoString resolvedName;
gfxPlatformFontList* platformFontList = gfxPlatformFontList::PlatformFontList();
if (platformFontList) {
if (!platformFontList->ResolveFontName(aFontName, resolvedName)) {
aAborted = PR_FALSE;
return NS_OK;
}
}
nsAutoString keyName(aFontName);
ToLowerCase(keyName);
nsRefPtr<FontFamily> ff;
if (mFonts.Get(keyName, &ff) ||
mFontSubstitutes.Get(keyName, &ff) ||
mFontAliases.Get(keyName, &ff))
{
aAborted = !(*aCallback)(ff->Name(), aClosure);
} else {
aAborted = PR_FALSE;
}
return NS_OK;
}
static PRBool SimpleResolverCallback(const nsAString& aName, void* aClosure)
{
nsString *result = static_cast<nsString*>(aClosure);
result->Assign(aName);
return PR_FALSE;
}
nsresult
gfxAndroidPlatform::GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName)
{
aFamilyName.Truncate();
PRBool aborted;
return ResolveFontName(aFontName, SimpleResolverCallback, &aFamilyName, aborted);
}
gfxPlatformFontList*
gfxAndroidPlatform::CreatePlatformFontList()
{
gfxPlatformFontList* list = new gfxFT2FontList();
if (NS_SUCCEEDED(list->InitFontList())) {
return list;
}
gfxPlatformFontList::Shutdown();
return nsnull;
}
PRBool
gfxAndroidPlatform::IsFontFormatSupported(nsIURI *aFontURI, PRUint32 aFormatFlags)
{
// check for strange format flags
NS_ASSERTION(!(aFormatFlags & gfxUserFontSet::FLAG_FORMAT_NOT_USED),
"strange font format hint set");
// accept supported formats
if (aFormatFlags & (gfxUserFontSet::FLAG_FORMAT_OPENTYPE |
gfxUserFontSet::FLAG_FORMAT_WOFF |
gfxUserFontSet::FLAG_FORMAT_TRUETYPE)) {
return PR_TRUE;
}
// reject all other formats, known and unknown
if (aFormatFlags != 0) {
return PR_FALSE;
}
// no format hint set, need to look at data
return PR_TRUE;
}
gfxFontGroup *
gfxAndroidPlatform::CreateFontGroup(const nsAString &aFamilies,
const gfxFontStyle *aStyle,
gfxUserFontSet* aUserFontSet)
{
return new gfxFT2FontGroup(aFamilies, aStyle, aUserFontSet);
}
FT_Library
gfxAndroidPlatform::GetFTLibrary()
{
return gPlatformFTLibrary;
}
FontFamily *
gfxAndroidPlatform::FindFontFamily(const nsAString& aName)
{
nsAutoString name(aName);
ToLowerCase(name);
nsRefPtr<FontFamily> ff;
if (!mFonts.Get(name, &ff) &&
!mFontSubstitutes.Get(name, &ff) &&
!mFontAliases.Get(name, &ff)) {
return nsnull;
}
return ff.get();
}
FontEntry *
gfxAndroidPlatform::FindFontEntry(const nsAString& aName, const gfxFontStyle& aFontStyle)
{
nsRefPtr<FontFamily> ff = FindFontFamily(aName);
if (!ff)
return nsnull;
return ff->FindFontEntry(aFontStyle);
}
static PLDHashOperator
FindFontForCharProc(nsStringHashKey::KeyType aKey,
nsRefPtr<FontFamily>& aFontFamily,
void* aUserArg)
{
FontSearch *data = (FontSearch*)aUserArg;
aFontFamily->FindFontForChar(data);
return PL_DHASH_NEXT;
}
already_AddRefed<gfxFont>
gfxAndroidPlatform::FindFontForChar(PRUint32 aCh, gfxFont *aFont)
{
// is codepoint with no matching font? return null immediately
if (mCodepointsWithNoFonts.test(aCh)) {
return nsnull;
}
FontSearch data(aCh, aFont);
// find fonts that support the character
mFonts.Enumerate(FindFontForCharProc, &data);
if (data.mBestMatch) {
nsRefPtr<gfxFT2Font> font =
gfxFT2Font::GetOrMakeFont(static_cast<FontEntry*>(data.mBestMatch.get()),
aFont->GetStyle());
gfxFont* ret = font.forget().get();
return already_AddRefed<gfxFont>(ret);
}
// no match? add to set of non-matching codepoints
mCodepointsWithNoFonts.set(aCh);
return nsnull;
}
gfxFontEntry*
gfxAndroidPlatform::MakePlatformFont(const gfxProxyFontEntry *aProxyEntry,
const PRUint8 *aFontData, PRUint32 aLength)
{
return gfxPlatformFontList::PlatformFontList()->MakePlatformFont(aProxyEntry,
aFontData,
aLength);
}
PRBool
gfxAndroidPlatform::GetPrefFontEntries(const nsCString& aKey, nsTArray<nsRefPtr<gfxFontEntry> > *aFontEntryList)
{
return mPrefFonts.Get(aKey, aFontEntryList);
}
void
gfxAndroidPlatform::SetPrefFontEntries(const nsCString& aKey, nsTArray<nsRefPtr<gfxFontEntry> >& aFontEntryList)
{
mPrefFonts.Put(aKey, aFontEntryList);
}
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