pjs/gfx/thebes/gfxDWriteFontList.cpp

651 строка
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C++
Исходник Обычный вид История

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Foundation 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):
* Bas Schouten <bschouten@mozilla.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 ***** */
#include "gfxDWriteFontList.h"
#include "gfxDWriteFonts.h"
#include "nsUnicharUtils.h"
#include "nsILocaleService.h"
#include "gfxGDIFontList.h"
#include "nsIWindowsRegKey.h"
// font info loader constants
static const PRUint32 kDelayBeforeLoadingFonts = 8 * 1000; // 8secs
static const PRUint32 kIntervalBetweenLoadingFonts = 150; // 150ms
static __inline void
BuildKeyNameFromFontName(nsAString &aName)
{
if (aName.Length() >= LF_FACESIZE)
aName.Truncate(LF_FACESIZE - 1);
ToLowerCase(aName);
}
////////////////////////////////////////////////////////////////////////////////
// gfxDWriteFontFamily
gfxDWriteFontFamily::~gfxDWriteFontFamily()
{
}
void
gfxDWriteFontFamily::FindStyleVariations()
{
HRESULT hr;
if (mHasStyles) {
return;
}
mHasStyles = PR_TRUE;
for (UINT32 i = 0; i < mDWFamily->GetFontCount(); i++) {
nsRefPtr<IDWriteFont> font;
hr = mDWFamily->GetFont(i, getter_AddRefs(font));
if (FAILED(hr)) {
// This should never happen.
NS_WARNING("Failed to get existing font from family.");
continue;
}
if (font->GetSimulations() & DWRITE_FONT_SIMULATIONS_OBLIQUE) {
// We don't want these.
continue;
}
nsRefPtr<IDWriteLocalizedStrings> names;
hr = font->GetFaceNames(getter_AddRefs(names));
if (FAILED(hr)) {
continue;
}
BOOL exists;
nsAutoTArray<WCHAR,32> faceName;
UINT32 englishIdx = 0;
hr = names->FindLocaleName(L"en-us", &englishIdx, &exists);
if (FAILED(hr)) {
continue;
}
if (!exists) {
// No english found, use whatever is first in the list.
englishIdx = 0;
}
UINT32 length;
hr = names->GetStringLength(englishIdx, &length);
if (FAILED(hr)) {
continue;
}
if (!faceName.SetLength(length + 1)) {
// Eeep - running out of memory. Unlikely to end well.
continue;
}
hr = names->GetString(englishIdx, faceName.Elements(), length + 1);
if (FAILED(hr)) {
continue;
}
nsString fullID(mName);
fullID.Append(faceName.Elements());
/**
* Faces do not have a localized name so we just put the en-us name in
* here.
*/
gfxDWriteFontEntry *fe =
new gfxDWriteFontEntry(fullID, font);
fe->SetFamily(this);
mAvailableFonts.AppendElement(fe);
}
if (!mAvailableFonts.Length()) {
NS_WARNING("Family with no font faces in it.");
}
if (mIsBadUnderlineFamily) {
SetBadUnderlineFonts();
}
}
void
gfxDWriteFontFamily::LocalizedName(nsAString &aLocalizedName)
{
aLocalizedName.AssignLiteral("Unknown Font");
HRESULT hr;
nsresult rv;
nsCOMPtr<nsILocaleService> ls = do_GetService(NS_LOCALESERVICE_CONTRACTID,
&rv);
nsCOMPtr<nsILocale> locale;
rv = ls->GetApplicationLocale(getter_AddRefs(locale));
nsString localeName;
if (NS_SUCCEEDED(rv)) {
rv = locale->GetCategory(NS_LITERAL_STRING(NSILOCALE_MESSAGE),
localeName);
}
if (NS_FAILED(rv)) {
localeName.AssignLiteral("en-us");
}
nsRefPtr<IDWriteLocalizedStrings> names;
hr = mDWFamily->GetFamilyNames(getter_AddRefs(names));
if (FAILED(hr)) {
return;
}
UINT32 idx = 0;
BOOL exists;
hr = names->FindLocaleName(localeName.BeginReading(),
&idx,
&exists);
if (FAILED(hr)) {
return;
}
if (!exists) {
// Use english is localized is not found.
hr = names->FindLocaleName(L"en-us", &idx, &exists);
if (FAILED(hr)) {
return;
}
if (!exists) {
// Use 0 index if english is not found.
idx = 0;
}
}
nsAutoTArray<WCHAR, 32> famName;
UINT32 length;
hr = names->GetStringLength(idx, &length);
if (FAILED(hr)) {
return;
}
if (!famName.SetLength(length + 1)) {
// Eeep - running out of memory. Unlikely to end well.
return;
}
hr = names->GetString(idx, famName.Elements(), length + 1);
if (FAILED(hr)) {
return;
}
aLocalizedName = nsDependentString(famName.Elements());
}
////////////////////////////////////////////////////////////////////////////////
// gfxDWriteFontEntry
gfxDWriteFontEntry::~gfxDWriteFontEntry()
{
}
PRBool
gfxDWriteFontEntry::IsSymbolFont()
{
if (mFont) {
return mFont->IsSymbolFont();
} else {
return PR_FALSE;
}
}
nsresult
gfxDWriteFontEntry::GetFontTable(PRUint32 aTableTag,
nsTArray<PRUint8> &aBuffer)
{
nsRefPtr<IDWriteFontFace> fontFace;
HRESULT hr;
nsresult rv;
rv = CreateFontFace(getter_AddRefs(fontFace));
if (NS_FAILED(rv)) {
return rv;
}
PRUint8 *tableData;
PRUint32 len;
void *tableContext = NULL;
BOOL exists;
hr = fontFace->TryGetFontTable(NS_SWAP32(aTableTag),
(const void**)&tableData,
&len,
&tableContext,
&exists);
if (FAILED(hr) || !exists) {
return NS_ERROR_FAILURE;
}
if (!aBuffer.SetLength(len)) {
return NS_ERROR_OUT_OF_MEMORY;
}
memcpy(aBuffer.Elements(), tableData, len);
if (tableContext) {
fontFace->ReleaseFontTable(&tableContext);
}
return NS_OK;
}
nsresult
gfxDWriteFontEntry::ReadCMAP()
{
nsRefPtr<IDWriteFontFace> fontFace;
HRESULT hr;
nsresult rv;
rv = CreateFontFace(getter_AddRefs(fontFace));
if (NS_FAILED(rv)) {
return rv;
}
PRUint8 *tableData;
PRUint32 len;
void *tableContext = NULL;
BOOL exists;
hr = fontFace->TryGetFontTable(DWRITE_MAKE_OPENTYPE_TAG('c', 'm', 'a', 'p'),
(const void**)&tableData,
&len,
&tableContext,
&exists);
if (FAILED(hr)) {
return NS_ERROR_FAILURE;
}
PRPackedBool isSymbol = fontFace->IsSymbolFont();
PRPackedBool isUnicode = PR_TRUE;
if (exists) {
rv = gfxFontUtils::ReadCMAP(tableData,
len,
mCharacterMap,
mUVSOffset,
isUnicode,
isSymbol);
}
fontFace->ReleaseFontTable(tableContext);
mCmapInitialized = PR_TRUE;
mHasCmapTable = NS_SUCCEEDED(rv);
return rv;
}
gfxFont *
gfxDWriteFontEntry::CreateFontInstance(const gfxFontStyle* aFontStyle,
PRBool aNeedsBold)
{
return new gfxDWriteFont(this, aFontStyle, aNeedsBold);
}
nsresult
gfxDWriteFontEntry::CreateFontFace(IDWriteFontFace **aFontFace,
DWRITE_FONT_SIMULATIONS aSimulations)
{
HRESULT hr;
if (mFont) {
hr = mFont->CreateFontFace(aFontFace);
} else if (mFontFile) {
IDWriteFontFile *fontFile = mFontFile.get();
hr = gfxWindowsPlatform::GetPlatform()->GetDWriteFactory()->
CreateFontFace(mFaceType,
1,
&fontFile,
0,
aSimulations,
aFontFace);
}
if (FAILED(hr)) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
// gfxDWriteFontList
gfxDWriteFontList::gfxDWriteFontList()
{
mFontSubstitutes.Init();
}
gfxFontEntry *
gfxDWriteFontList::GetDefaultFont(const gfxFontStyle *aStyle,
PRBool &aNeedsBold)
{
NONCLIENTMETRICSW ncm;
ncm.cbSize = sizeof(ncm);
BOOL status = ::SystemParametersInfoW(SPI_GETNONCLIENTMETRICS,
sizeof(ncm), &ncm, 0);
if (status) {
nsAutoString resolvedName;
if (ResolveFontName(nsDependentString(ncm.lfMessageFont.lfFaceName),
resolvedName)) {
return FindFontForFamily(resolvedName, aStyle, aNeedsBold);
}
}
return nsnull;
}
gfxFontEntry *
gfxDWriteFontList::LookupLocalFont(const gfxProxyFontEntry *aProxyEntry,
const nsAString& aFullname)
{
PRBool found;
gfxFontEntry *lookup;
// initialize name lookup tables if needed
if (!mFaceNamesInitialized) {
InitFaceNameLists();
}
// lookup in name lookup tables, return null if not found
if (!(lookup = mPostscriptNames.GetWeak(aFullname, &found)) &&
!(lookup = mFullnames.GetWeak(aFullname, &found)))
{
return nsnull;
}
gfxFontEntry *fe =
new gfxDWriteFontEntry(lookup->Name(),
static_cast<gfxDWriteFontEntry*>(lookup)->mFont,
aProxyEntry->Weight(),
aProxyEntry->Stretch(),
aProxyEntry->IsItalic());
return fe;
}
gfxFontEntry *
gfxDWriteFontList::MakePlatformFont(const gfxProxyFontEntry *aProxyEntry,
const PRUint8 *aFontData,
PRUint32 aLength)
{
nsresult rv;
nsAutoString uniqueName;
rv = gfxFontUtils::MakeUniqueUserFontName(uniqueName);
if (NS_FAILED(rv)) {
NS_Free((void*)aFontData);
return nsnull;
}
nsTArray<PRUint8> newFontData;
rv = gfxFontUtils::RenameFont(uniqueName, aFontData, aLength, &newFontData);
NS_Free((void*)aFontData);
if (NS_FAILED(rv)) {
return nsnull;
}
DWORD numFonts = 0;
nsRefPtr<IDWriteFontFile> fontFile;
HRESULT hr;
/**
* We pass in a pointer to a structure containing a pointer to the array
* containing the font data and a unique identifier. DWrite will
* internally copy what is at that pointer, and pass that to
* CreateStreamFromKey. The array will be empty when the function
* succesfully returns since it swaps out the data.
*/
ffReferenceKey key;
key.mArray = &newFontData;
nsCOMPtr<nsIUUIDGenerator> uuidgen =
do_GetService("@mozilla.org/uuid-generator;1");
if (!uuidgen) {
return nsnull;
}
rv = uuidgen->GenerateUUIDInPlace(&key.mGUID);
if (NS_FAILED(rv)) {
return nsnull;
}
hr = gfxWindowsPlatform::GetPlatform()->GetDWriteFactory()->
CreateCustomFontFileReference(&key,
sizeof(key),
gfxDWriteFontFileLoader::Instance(),
getter_AddRefs(fontFile));
if (FAILED(hr)) {
NS_WARNING("Failed to create custom font file reference.");
return nsnull;
}
BOOL isSupported;
DWRITE_FONT_FILE_TYPE fileType;
UINT32 numFaces;
PRUint16 w = (aProxyEntry->mWeight == 0 ? 400 : aProxyEntry->mWeight);
gfxDWriteFontEntry *entry =
new gfxDWriteFontEntry(uniqueName,
fontFile,
aProxyEntry->Weight(),
aProxyEntry->Stretch(),
aProxyEntry->IsItalic());
fontFile->Analyze(&isSupported, &fileType, &entry->mFaceType, &numFaces);
if (!isSupported || numFaces > 1) {
// We don't know how to deal with 0 faces either.
delete entry;
return nsnull;
}
return entry;
}
nsresult
gfxDWriteFontList::InitFontList()
{
HRESULT hr;
gfxFontCache *fc = gfxFontCache::GetCache();
if (fc) {
fc->AgeAllGenerations();
}
gfxPlatformFontList::InitFontList();
mFontSubstitutes.Clear();
mNonExistingFonts.Clear();
nsRefPtr<IDWriteFontCollection> systemFonts;
hr = gfxWindowsPlatform::GetPlatform()->GetDWriteFactory()->
GetSystemFontCollection(getter_AddRefs(systemFonts));
NS_ASSERTION(SUCCEEDED(hr), "GetSystemFontCollection failed!");
if (FAILED(hr)) {
return NS_ERROR_FAILURE;
}
for (UINT32 i = 0; i < systemFonts->GetFontFamilyCount(); i++) {
nsRefPtr<IDWriteFontFamily> family;
systemFonts->GetFontFamily(i, getter_AddRefs(family));
nsRefPtr<IDWriteLocalizedStrings> names;
hr = family->GetFamilyNames(getter_AddRefs(names));
if (FAILED(hr)) {
continue;
}
UINT32 englishIdx = 0;
BOOL exists;
hr = names->FindLocaleName(L"en-us", &englishIdx, &exists);
if (FAILED(hr)) {
continue;
}
if (!exists) {
// Use 0 index if english is not found.
englishIdx = 0;
}
nsAutoTArray<WCHAR, 32> famName;
UINT32 length;
hr = names->GetStringLength(englishIdx, &length);
if (FAILED(hr)) {
continue;
}
if (!famName.SetLength(length + 1)) {
// Eeep - running out of memory. Unlikely to end well.
continue;
}
hr = names->GetString(englishIdx, famName.Elements(), length + 1);
if (FAILED(hr)) {
continue;
}
nsAutoString name(famName.Elements());
BuildKeyNameFromFontName(name);
if (!mFontFamilies.GetWeak(name)) {
nsRefPtr<gfxFontFamily> fam =
new gfxDWriteFontFamily(nsDependentString(famName.Elements()),
family);
if (mBadUnderlineFamilyNames.Contains(name)) {
fam->SetBadUnderlineFamily();
}
mFontFamilies.Put(name, fam);
}
}
GetFontSubstitutes();
StartLoader(kDelayBeforeLoadingFonts, kIntervalBetweenLoadingFonts);
return NS_OK;
}
static void
RemoveCharsetFromFontSubstitute(nsAString &aName)
{
PRInt32 comma = aName.FindChar(PRUnichar(','));
if (comma >= 0)
aName.Truncate(comma);
}
nsresult
gfxDWriteFontList::GetFontSubstitutes()
{
// Create the list of FontSubstitutes
nsCOMPtr<nsIWindowsRegKey> regKey =
do_CreateInstance("@mozilla.org/windows-registry-key;1");
if (!regKey) {
return NS_ERROR_FAILURE;
}
NS_NAMED_LITERAL_STRING(
kFontSubstitutesKey,
"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\FontSubstitutes");
nsresult rv = regKey->Open(nsIWindowsRegKey::ROOT_KEY_LOCAL_MACHINE,
kFontSubstitutesKey,
nsIWindowsRegKey::ACCESS_READ);
if (NS_FAILED(rv)) {
return rv;
}
PRUint32 count;
rv = regKey->GetValueCount(&count);
if (NS_FAILED(rv) || count == 0)
return rv;
for (PRUint32 i = 0; i < count; i++) {
nsAutoString substituteName;
rv = regKey->GetValueName(i, substituteName);
if (NS_FAILED(rv) || substituteName.IsEmpty() ||
substituteName.CharAt(1) == PRUnichar('@')) {
continue;
}
PRUint32 valueType;
rv = regKey->GetValueType(substituteName, &valueType);
if (NS_FAILED(rv) || valueType != nsIWindowsRegKey::TYPE_STRING) {
continue;
}
nsAutoString actualFontName;
rv = regKey->ReadStringValue(substituteName, actualFontName);
if (NS_FAILED(rv)) {
continue;
}
RemoveCharsetFromFontSubstitute(substituteName);
BuildKeyNameFromFontName(substituteName);
RemoveCharsetFromFontSubstitute(actualFontName);
BuildKeyNameFromFontName(actualFontName);
gfxFontFamily *ff;
if (!actualFontName.IsEmpty() &&
(ff = mFontFamilies.GetWeak(actualFontName))) {
mFontSubstitutes.Put(substituteName, ff);
} else {
mNonExistingFonts.AppendElement(substituteName);
}
}
return NS_OK;
}
PRBool
gfxDWriteFontList::GetStandardFamilyName(const nsAString& aFontName,
nsAString& aFamilyName)
{
gfxFontFamily *family = FindFamily(aFontName);
if (family) {
family->LocalizedName(aFamilyName);
return PR_TRUE;
}
return PR_FALSE;
}
PRBool
gfxDWriteFontList::ResolveFontName(const nsAString& aFontName,
nsAString& aResolvedFontName)
{
nsAutoString keyName(aFontName);
BuildKeyNameFromFontName(keyName);
nsRefPtr<gfxFontFamily> ff;
if (mFontSubstitutes.Get(keyName, &ff)) {
aResolvedFontName = ff->Name();
return PR_TRUE;
}
if (mNonExistingFonts.Contains(keyName)) {
return PR_FALSE;
}
return gfxPlatformFontList::ResolveFontName(aFontName, aResolvedFontName);
}