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gecko-dev/layout/style/nsFontFaceLoader.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
// vim:cindent:ts=2:et:sw=2:
/* ***** 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) 2008
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* John Daggett <jdaggett@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of 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 ***** */
/* code for loading in @font-face defined font data */
#ifdef MOZ_LOGGING
#define FORCE_PR_LOG /* Allow logging in the release build */
#endif /* MOZ_LOGGING */
#include "prlog.h"
#include "nsFontFaceLoader.h"
#include "nsError.h"
#include "nsIFile.h"
#include "nsILocalFile.h"
#include "nsIStreamListener.h"
#include "nsNetUtil.h"
#include "nsIChannelEventSink.h"
#include "nsIInterfaceRequestor.h"
#include "nsContentUtils.h"
#include "mozilla/Preferences.h"
#include "nsPresContext.h"
#include "nsIPresShell.h"
#include "nsIDocument.h"
#include "nsIFrame.h"
#include "nsIPrincipal.h"
#include "nsIScriptSecurityManager.h"
#include "nsDirectoryServiceUtils.h"
#include "nsDirectoryServiceDefs.h"
#include "nsIContentPolicy.h"
#include "nsContentPolicyUtils.h"
#include "nsContentErrors.h"
#include "nsCrossSiteListenerProxy.h"
#include "nsIContentSecurityPolicy.h"
#include "nsIChannelPolicy.h"
#include "nsChannelPolicy.h"
#include "nsIConsoleService.h"
#include "nsStyleSet.h"
#include "nsPrintfCString.h"
using namespace mozilla;
#ifdef PR_LOGGING
static PRLogModuleInfo *gFontDownloaderLog = PR_NewLogModule("fontdownloader");
#endif /* PR_LOGGING */
#define LOG(args) PR_LOG(gFontDownloaderLog, PR_LOG_DEBUG, args)
#define LOG_ENABLED() PR_LOG_TEST(gFontDownloaderLog, PR_LOG_DEBUG)
nsFontFaceLoader::nsFontFaceLoader(gfxProxyFontEntry *aProxy, nsIURI *aFontURI,
nsUserFontSet *aFontSet, nsIChannel *aChannel)
: mFontEntry(aProxy), mFontURI(aFontURI), mFontSet(aFontSet),
mChannel(aChannel)
{
mFontFamily = aProxy->Family();
}
nsFontFaceLoader::~nsFontFaceLoader()
{
if (mLoadTimer) {
mLoadTimer->Cancel();
mLoadTimer = nsnull;
}
if (mFontSet) {
mFontSet->RemoveLoader(this);
}
}
void
nsFontFaceLoader::StartedLoading(nsIStreamLoader *aStreamLoader)
{
PRInt32 loadTimeout =
Preferences::GetInt("gfx.downloadable_fonts.fallback_delay", 3000);
if (loadTimeout > 0) {
mLoadTimer = do_CreateInstance("@mozilla.org/timer;1");
if (mLoadTimer) {
mLoadTimer->InitWithFuncCallback(LoadTimerCallback,
static_cast<void*>(this),
loadTimeout,
nsITimer::TYPE_ONE_SHOT);
}
} else {
mFontEntry->mLoadingState = gfxProxyFontEntry::LOADING_SLOWLY;
}
mStreamLoader = aStreamLoader;
}
void
nsFontFaceLoader::LoadTimerCallback(nsITimer *aTimer, void *aClosure)
{
nsFontFaceLoader *loader = static_cast<nsFontFaceLoader*>(aClosure);
gfxProxyFontEntry *pe = loader->mFontEntry.get();
bool updateUserFontSet = true;
// If the entry is loading, check whether it's >75% done; if so,
// we allow another timeout period before showing a fallback font.
if (pe->mLoadingState == gfxProxyFontEntry::LOADING_STARTED) {
PRInt32 contentLength;
PRUint32 numBytesRead;
if (NS_SUCCEEDED(loader->mChannel->GetContentLength(&contentLength)) &&
contentLength > 0 &&
NS_SUCCEEDED(loader->mStreamLoader->GetNumBytesRead(&numBytesRead)) &&
numBytesRead > 3 * (PRUint32(contentLength) >> 2))
{
// More than 3/4 the data has been downloaded, so allow 50% extra
// time and hope the remainder will arrive before the additional
// time expires.
pe->mLoadingState = gfxProxyFontEntry::LOADING_ALMOST_DONE;
PRUint32 delay;
loader->mLoadTimer->GetDelay(&delay);
loader->mLoadTimer->InitWithFuncCallback(LoadTimerCallback,
static_cast<void*>(loader),
delay >> 1,
nsITimer::TYPE_ONE_SHOT);
updateUserFontSet = false;
LOG(("fontdownloader (%p) 75%% done, resetting timer\n", loader));
}
}
// If the font is not 75% loaded, or if we've already timed out once
// before, we mark this entry as "loading slowly", so the fallback
// font will be used in the meantime, and tell the context to refresh.
if (updateUserFontSet) {
pe->mLoadingState = gfxProxyFontEntry::LOADING_SLOWLY;
nsPresContext *ctx = loader->mFontSet->GetPresContext();
NS_ASSERTION(ctx, "fontSet doesn't have a presContext?");
gfxUserFontSet *fontSet;
if (ctx && (fontSet = ctx->GetUserFontSet()) != nsnull) {
fontSet->IncrementGeneration();
ctx->UserFontSetUpdated();
LOG(("fontdownloader (%p) timeout reflow\n", loader));
}
}
}
NS_IMPL_ISUPPORTS1(nsFontFaceLoader, nsIStreamLoaderObserver)
NS_IMETHODIMP
nsFontFaceLoader::OnStreamComplete(nsIStreamLoader* aLoader,
nsISupports* aContext,
nsresult aStatus,
PRUint32 aStringLen,
const PRUint8* aString)
{
if (!mFontSet) {
// We've been canceled
return aStatus;
}
mFontSet->RemoveLoader(this);
#ifdef PR_LOGGING
if (LOG_ENABLED()) {
nsCAutoString fontURI;
mFontURI->GetSpec(fontURI);
if (NS_SUCCEEDED(aStatus)) {
LOG(("fontdownloader (%p) download completed - font uri: (%s)\n",
this, fontURI.get()));
} else {
LOG(("fontdownloader (%p) download failed - font uri: (%s) error: %8.8x\n",
this, fontURI.get(), aStatus));
}
}
#endif
nsPresContext *ctx = mFontSet->GetPresContext();
NS_ASSERTION(ctx && !ctx->PresShell()->IsDestroying(),
"We should have been canceled already");
// whether an error occurred or not, notify the user font set of the completion
gfxUserFontSet *userFontSet = ctx->GetUserFontSet();
if (!userFontSet) {
return aStatus;
}
if (NS_SUCCEEDED(aStatus)) {
// for HTTP requests, check whether the request _actually_ succeeded;
// the "request status" in aStatus does not necessarily indicate this,
// because HTTP responses such as 404 (Not Found) will still result in
// a success code and potentially an HTML error page from the server
// as the resulting data. We don't want to use that as a font.
nsCOMPtr<nsIRequest> request;
nsCOMPtr<nsIHttpChannel> httpChannel;
aLoader->GetRequest(getter_AddRefs(request));
httpChannel = do_QueryInterface(request);
if (httpChannel) {
bool succeeded;
nsresult rv = httpChannel->GetRequestSucceeded(&succeeded);
if (NS_SUCCEEDED(rv) && !succeeded) {
aStatus = NS_ERROR_NOT_AVAILABLE;
}
}
}
// The userFontSet is responsible for freeing the downloaded data
// (aString) when finished with it; the pointer is no longer valid
// after OnLoadComplete returns.
// This is called even in the case of a failed download (HTTP 404, etc),
// as there may still be data to be freed (e.g. an error page),
// and we need the fontSet to initiate loading the next source.
bool fontUpdate = userFontSet->OnLoadComplete(mFontEntry,
aString, aStringLen,
aStatus);
// when new font loaded, need to reflow
if (fontUpdate) {
// Update layout for the presence of the new font. Since this is
// asynchronous, reflows will coalesce.
ctx->UserFontSetUpdated();
LOG(("fontdownloader (%p) reflow\n", this));
}
return NS_SUCCESS_ADOPTED_DATA;
}
void
nsFontFaceLoader::Cancel()
{
mFontEntry->mLoadingState = gfxProxyFontEntry::NOT_LOADING;
mFontSet = nsnull;
if (mLoadTimer) {
mLoadTimer->Cancel();
mLoadTimer = nsnull;
}
mChannel->Cancel(NS_BINDING_ABORTED);
}
nsresult
nsFontFaceLoader::CheckLoadAllowed(nsIPrincipal* aSourcePrincipal,
nsIURI* aTargetURI,
nsISupports* aContext)
{
nsresult rv;
if (!aSourcePrincipal)
return NS_OK;
// check with the security manager
nsIScriptSecurityManager *secMan = nsContentUtils::GetSecurityManager();
rv = secMan->CheckLoadURIWithPrincipal(aSourcePrincipal, aTargetURI,
nsIScriptSecurityManager::STANDARD);
if (NS_FAILED(rv)) {
return rv;
}
// check content policy
PRInt16 shouldLoad = nsIContentPolicy::ACCEPT;
rv = NS_CheckContentLoadPolicy(nsIContentPolicy::TYPE_FONT,
aTargetURI,
aSourcePrincipal,
aContext,
EmptyCString(), // mime type
nsnull,
&shouldLoad,
nsContentUtils::GetContentPolicy(),
nsContentUtils::GetSecurityManager());
if (NS_FAILED(rv) || NS_CP_REJECTED(shouldLoad)) {
return NS_ERROR_CONTENT_BLOCKED;
}
return NS_OK;
}
nsUserFontSet::nsUserFontSet(nsPresContext *aContext)
: mPresContext(aContext)
{
NS_ASSERTION(mPresContext, "null context passed to nsUserFontSet");
mLoaders.Init();
}
nsUserFontSet::~nsUserFontSet()
{
NS_ASSERTION(mLoaders.Count() == 0, "mLoaders should have been emptied");
}
static PLDHashOperator DestroyIterator(nsPtrHashKey<nsFontFaceLoader>* aKey,
void* aUserArg)
{
aKey->GetKey()->Cancel();
return PL_DHASH_REMOVE;
}
void
nsUserFontSet::Destroy()
{
mPresContext = nsnull;
mLoaders.EnumerateEntries(DestroyIterator, nsnull);
}
void
nsUserFontSet::RemoveLoader(nsFontFaceLoader *aLoader)
{
mLoaders.RemoveEntry(aLoader);
}
nsresult
nsUserFontSet::StartLoad(gfxProxyFontEntry *aProxy,
const gfxFontFaceSrc *aFontFaceSrc)
{
nsresult rv;
// check same-site origin
nsIPresShell *ps = mPresContext->PresShell();
if (!ps)
return NS_ERROR_FAILURE;
NS_ASSERTION(aFontFaceSrc && !aFontFaceSrc->mIsLocal,
"bad font face url passed to fontloader");
NS_ASSERTION(aFontFaceSrc->mURI, "null font uri");
if (!aFontFaceSrc->mURI)
return NS_ERROR_FAILURE;
// use document principal, original principal if flag set
// this enables user stylesheets to load font files via
// @font-face rules
nsCOMPtr<nsIPrincipal> principal = ps->GetDocument()->NodePrincipal();
NS_ASSERTION(aFontFaceSrc->mOriginPrincipal,
"null origin principal in @font-face rule");
if (aFontFaceSrc->mUseOriginPrincipal) {
principal = do_QueryInterface(aFontFaceSrc->mOriginPrincipal);
}
rv = nsFontFaceLoader::CheckLoadAllowed(principal, aFontFaceSrc->mURI,
ps->GetDocument());
if (NS_FAILED(rv)) {
LogMessage(aProxy, "download not allowed", nsIScriptError::errorFlag, rv);
return rv;
}
nsCOMPtr<nsIStreamLoader> streamLoader;
nsCOMPtr<nsILoadGroup> loadGroup(ps->GetDocument()->GetDocumentLoadGroup());
nsCOMPtr<nsIChannel> channel;
// get Content Security Policy from principal to pass into channel
nsCOMPtr<nsIChannelPolicy> channelPolicy;
nsCOMPtr<nsIContentSecurityPolicy> csp;
rv = principal->GetCsp(getter_AddRefs(csp));
NS_ENSURE_SUCCESS(rv, rv);
if (csp) {
channelPolicy = do_CreateInstance("@mozilla.org/nschannelpolicy;1");
channelPolicy->SetContentSecurityPolicy(csp);
channelPolicy->SetLoadType(nsIContentPolicy::TYPE_FONT);
}
rv = NS_NewChannel(getter_AddRefs(channel),
aFontFaceSrc->mURI,
nsnull,
loadGroup,
nsnull,
nsIRequest::LOAD_NORMAL,
channelPolicy);
NS_ENSURE_SUCCESS(rv, rv);
nsRefPtr<nsFontFaceLoader> fontLoader =
new nsFontFaceLoader(aProxy, aFontFaceSrc->mURI, this, channel);
if (!fontLoader)
return NS_ERROR_OUT_OF_MEMORY;
#ifdef PR_LOGGING
if (LOG_ENABLED()) {
nsCAutoString fontURI, referrerURI;
aFontFaceSrc->mURI->GetSpec(fontURI);
if (aFontFaceSrc->mReferrer)
aFontFaceSrc->mReferrer->GetSpec(referrerURI);
LOG(("fontdownloader (%p) download start - font uri: (%s) "
"referrer uri: (%s)\n",
fontLoader.get(), fontURI.get(), referrerURI.get()));
}
#endif
nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(channel));
if (httpChannel)
httpChannel->SetReferrer(aFontFaceSrc->mReferrer);
rv = NS_NewStreamLoader(getter_AddRefs(streamLoader), fontLoader);
NS_ENSURE_SUCCESS(rv, rv);
bool inherits = false;
rv = NS_URIChainHasFlags(aFontFaceSrc->mURI,
nsIProtocolHandler::URI_INHERITS_SECURITY_CONTEXT,
&inherits);
if (NS_SUCCEEDED(rv) && inherits) {
// allow data, javascript, etc URI's
rv = channel->AsyncOpen(streamLoader, nsnull);
} else {
nsCOMPtr<nsIStreamListener> listener =
new nsCORSListenerProxy(streamLoader, principal, channel,
false, &rv);
if (NS_FAILED(rv)) {
fontLoader->DropChannel(); // explicitly need to break ref cycle
}
NS_ENSURE_TRUE(listener, NS_ERROR_OUT_OF_MEMORY);
NS_ENSURE_SUCCESS(rv, rv);
rv = channel->AsyncOpen(listener, nsnull);
}
if (NS_SUCCEEDED(rv)) {
mLoaders.PutEntry(fontLoader);
fontLoader->StartedLoading(streamLoader);
}
return rv;
}
bool
nsUserFontSet::UpdateRules(const nsTArray<nsFontFaceRuleContainer>& aRules)
{
bool modified = false;
// destroy any current loaders, as the entries they refer to
// may be about to get replaced
if (mLoaders.Count() > 0) {
modified = true; // trigger reflow so that any necessary downloads
// will be reinitiated
}
mLoaders.EnumerateEntries(DestroyIterator, nsnull);
nsTArray<FontFaceRuleRecord> oldRules;
mRules.SwapElements(oldRules);
// destroy the font family records; we need to re-create them
// because we might end up with faces in a different order,
// even if they're the same font entries as before
mFontFamilies.Clear();
for (PRUint32 i = 0, i_end = aRules.Length(); i < i_end; ++i) {
// insert each rule into our list, migrating old font entries if possible
// rather than creating new ones; set modified to true if we detect
// that rule ordering has changed, or if a new entry is created
InsertRule(aRules[i].mRule, aRules[i].mSheetType, oldRules, modified);
}
// if any rules are left in the old list, note that the set has changed
if (oldRules.Length() > 0) {
modified = true;
}
if (modified) {
IncrementGeneration();
}
return modified;
}
void
nsUserFontSet::InsertRule(nsCSSFontFaceRule *aRule, PRUint8 aSheetType,
nsTArray<FontFaceRuleRecord>& aOldRules,
bool& aFontSetModified)
{
NS_ABORT_IF_FALSE(aRule->GetType() == mozilla::css::Rule::FONT_FACE_RULE,
"InsertRule passed a non-fontface CSS rule");
// set up family name
nsAutoString fontfamily;
nsCSSValue val;
PRUint32 unit;
aRule->GetDesc(eCSSFontDesc_Family, val);
unit = val.GetUnit();
if (unit == eCSSUnit_String) {
val.GetStringValue(fontfamily);
} else {
NS_ASSERTION(unit == eCSSUnit_Null,
"@font-face family name has unexpected unit");
}
if (fontfamily.IsEmpty()) {
// If there is no family name, this rule cannot contribute a
// usable font, so there is no point in processing it further.
return;
}
// first, we check in oldRules; if the rule exists there, just move it
// to the new rule list, and put the entry into the appropriate family
for (PRUint32 i = 0; i < aOldRules.Length(); ++i) {
const FontFaceRuleRecord& ruleRec = aOldRules[i];
if (ruleRec.mContainer.mRule == aRule &&
ruleRec.mContainer.mSheetType == aSheetType) {
AddFontFace(fontfamily, ruleRec.mFontEntry);
mRules.AppendElement(ruleRec);
aOldRules.RemoveElementAt(i);
// note the set has been modified if an old rule was skipped to find
// this one - something has been dropped, or ordering changed
if (i > 0) {
aFontSetModified = true;
}
return;
}
}
// this is a new rule:
PRUint32 weight = NS_STYLE_FONT_WEIGHT_NORMAL;
PRUint32 stretch = NS_STYLE_FONT_STRETCH_NORMAL;
PRUint32 italicStyle = FONT_STYLE_NORMAL;
nsString featureSettings, languageOverride;
// set up weight
aRule->GetDesc(eCSSFontDesc_Weight, val);
unit = val.GetUnit();
if (unit == eCSSUnit_Integer || unit == eCSSUnit_Enumerated) {
weight = val.GetIntValue();
} else if (unit == eCSSUnit_Normal) {
weight = NS_STYLE_FONT_WEIGHT_NORMAL;
} else {
NS_ASSERTION(unit == eCSSUnit_Null,
"@font-face weight has unexpected unit");
}
// set up stretch
aRule->GetDesc(eCSSFontDesc_Stretch, val);
unit = val.GetUnit();
if (unit == eCSSUnit_Enumerated) {
stretch = val.GetIntValue();
} else if (unit == eCSSUnit_Normal) {
stretch = NS_STYLE_FONT_STRETCH_NORMAL;
} else {
NS_ASSERTION(unit == eCSSUnit_Null,
"@font-face stretch has unexpected unit");
}
// set up font style
aRule->GetDesc(eCSSFontDesc_Style, val);
unit = val.GetUnit();
if (unit == eCSSUnit_Enumerated) {
italicStyle = val.GetIntValue();
} else if (unit == eCSSUnit_Normal) {
italicStyle = FONT_STYLE_NORMAL;
} else {
NS_ASSERTION(unit == eCSSUnit_Null,
"@font-face style has unexpected unit");
}
// set up font features
aRule->GetDesc(eCSSFontDesc_FontFeatureSettings, val);
unit = val.GetUnit();
if (unit == eCSSUnit_Normal) {
// empty feature string
} else if (unit == eCSSUnit_String) {
val.GetStringValue(featureSettings);
} else {
NS_ASSERTION(unit == eCSSUnit_Null,
"@font-face font-feature-settings has unexpected unit");
}
// set up font language override
aRule->GetDesc(eCSSFontDesc_FontLanguageOverride, val);
unit = val.GetUnit();
if (unit == eCSSUnit_Normal) {
// empty feature string
} else if (unit == eCSSUnit_String) {
val.GetStringValue(languageOverride);
} else {
NS_ASSERTION(unit == eCSSUnit_Null,
"@font-face font-language-override has unexpected unit");
}
// set up src array
nsTArray<gfxFontFaceSrc> srcArray;
aRule->GetDesc(eCSSFontDesc_Src, val);
unit = val.GetUnit();
if (unit == eCSSUnit_Array) {
nsCSSValue::Array *srcArr = val.GetArrayValue();
size_t numSrc = srcArr->Count();
for (size_t i = 0; i < numSrc; i++) {
val = srcArr->Item(i);
unit = val.GetUnit();
gfxFontFaceSrc *face = srcArray.AppendElements(1);
if (!face)
return;
switch (unit) {
case eCSSUnit_Local_Font:
val.GetStringValue(face->mLocalName);
face->mIsLocal = true;
face->mURI = nsnull;
face->mFormatFlags = 0;
break;
case eCSSUnit_URL:
face->mIsLocal = false;
face->mURI = val.GetURLValue();
NS_ASSERTION(face->mURI, "null url in @font-face rule");
face->mReferrer = val.GetURLStructValue()->mReferrer;
face->mOriginPrincipal = val.GetURLStructValue()->mOriginPrincipal;
NS_ASSERTION(face->mOriginPrincipal, "null origin principal in @font-face rule");
// agent and user stylesheets are treated slightly differently,
// the same-site origin check and access control headers are
// enforced against the sheet principal rather than the document
// principal to allow user stylesheets to include @font-face rules
face->mUseOriginPrincipal = (aSheetType == nsStyleSet::eUserSheet ||
aSheetType == nsStyleSet::eAgentSheet);
face->mLocalName.Truncate();
face->mFormatFlags = 0;
while (i + 1 < numSrc && (val = srcArr->Item(i+1),
val.GetUnit() == eCSSUnit_Font_Format)) {
nsDependentString valueString(val.GetStringBufferValue());
if (valueString.LowerCaseEqualsASCII("woff")) {
face->mFormatFlags |= FLAG_FORMAT_WOFF;
} else if (valueString.LowerCaseEqualsASCII("opentype")) {
face->mFormatFlags |= FLAG_FORMAT_OPENTYPE;
} else if (valueString.LowerCaseEqualsASCII("truetype")) {
face->mFormatFlags |= FLAG_FORMAT_TRUETYPE;
} else if (valueString.LowerCaseEqualsASCII("truetype-aat")) {
face->mFormatFlags |= FLAG_FORMAT_TRUETYPE_AAT;
} else if (valueString.LowerCaseEqualsASCII("embedded-opentype")) {
face->mFormatFlags |= FLAG_FORMAT_EOT;
} else if (valueString.LowerCaseEqualsASCII("svg")) {
face->mFormatFlags |= FLAG_FORMAT_SVG;
} else {
// unknown format specified, mark to distinguish from the
// case where no format hints are specified
face->mFormatFlags |= FLAG_FORMAT_UNKNOWN;
}
i++;
}
break;
default:
NS_ASSERTION(unit == eCSSUnit_Local_Font || unit == eCSSUnit_URL,
"strange unit type in font-face src array");
break;
}
}
} else {
NS_ASSERTION(unit == eCSSUnit_Null, "@font-face src has unexpected unit");
}
if (srcArray.Length() > 0) {
FontFaceRuleRecord ruleRec;
ruleRec.mContainer.mRule = aRule;
ruleRec.mContainer.mSheetType = aSheetType;
ruleRec.mFontEntry = AddFontFace(fontfamily, srcArray,
weight, stretch, italicStyle,
featureSettings, languageOverride);
if (ruleRec.mFontEntry) {
mRules.AppendElement(ruleRec);
}
// this was a new rule and fontEntry, so note that the set was modified
aFontSetModified = true;
}
}
void
nsUserFontSet::ReplaceFontEntry(gfxProxyFontEntry *aProxy,
gfxFontEntry *aFontEntry)
{
for (PRUint32 i = 0; i < mRules.Length(); ++i) {
if (mRules[i].mFontEntry == aProxy) {
mRules[i].mFontEntry = aFontEntry;
break;
}
}
static_cast<gfxMixedFontFamily*>(aProxy->Family())->
ReplaceFontEntry(aProxy, aFontEntry);
}
nsCSSFontFaceRule*
nsUserFontSet::FindRuleForEntry(gfxFontEntry *aFontEntry)
{
for (PRUint32 i = 0; i < mRules.Length(); ++i) {
if (mRules[i].mFontEntry == aFontEntry) {
return mRules[i].mContainer.mRule;
}
}
return nsnull;
}
nsresult
nsUserFontSet::LogMessage(gfxProxyFontEntry *aProxy,
const char *aMessage,
PRUint32 aFlags,
nsresult aStatus)
{
nsCOMPtr<nsIConsoleService>
console(do_GetService(NS_CONSOLESERVICE_CONTRACTID));
if (!console) {
return NS_ERROR_NOT_AVAILABLE;
}
NS_ConvertUTF16toUTF8 familyName(aProxy->FamilyName());
nsCAutoString fontURI;
if (aProxy->mSrcIndex == aProxy->mSrcList.Length()) {
fontURI.AppendLiteral("(end of source list)");
} else {
if (aProxy->mSrcList[aProxy->mSrcIndex].mURI) {
aProxy->mSrcList[aProxy->mSrcIndex].mURI->GetSpec(fontURI);
} else {
fontURI.AppendLiteral("(invalid URI)");
}
}
char weightKeywordBuf[8]; // plenty to sprintf() a PRUint16
const char *weightKeyword;
const nsAFlatCString& weightKeywordString =
nsCSSProps::ValueToKeyword(aProxy->Weight(),
nsCSSProps::kFontWeightKTable);
if (weightKeywordString.Length() > 0) {
weightKeyword = weightKeywordString.get();
} else {
sprintf(weightKeywordBuf, "%u", aProxy->Weight());
weightKeyword = weightKeywordBuf;
}
nsPrintfCString
msg(1024,
"downloadable font: %s "
"(font-family: \"%s\" style:%s weight:%s stretch:%s src index:%d)",
aMessage,
familyName.get(),
aProxy->IsItalic() ? "italic" : "normal",
weightKeyword,
nsCSSProps::ValueToKeyword(aProxy->Stretch(),
nsCSSProps::kFontStretchKTable).get(),
aProxy->mSrcIndex);
if (aStatus != 0) {
msg.Append(": ");
switch (aStatus) {
case NS_ERROR_DOM_BAD_URI:
msg.Append("bad URI or cross-site access not allowed");
break;
case NS_ERROR_CONTENT_BLOCKED:
msg.Append("content blocked");
break;
default:
msg.Append("status=");
msg.AppendInt(aStatus);
break;
}
}
msg.Append("\nsource: ");
msg.Append(fontURI);
#ifdef PR_LOGGING
if (PR_LOG_TEST(sUserFontsLog, PR_LOG_DEBUG)) {
PR_LOG(sUserFontsLog, PR_LOG_DEBUG,
("userfonts (%p) %s", this, msg.get()));
}
#endif
// try to give the user an indication of where the rule came from
nsCSSFontFaceRule* rule = FindRuleForEntry(aProxy);
nsString href;
nsString text;
nsresult rv;
if (rule) {
rv = rule->GetCssText(text);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMCSSStyleSheet> sheet;
rv = rule->GetParentStyleSheet(getter_AddRefs(sheet));
NS_ENSURE_SUCCESS(rv, rv);
rv = sheet->GetHref(href);
NS_ENSURE_SUCCESS(rv, rv);
}
nsCOMPtr<nsIScriptError> scriptError =
do_CreateInstance(NS_SCRIPTERROR_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
PRUint64 innerWindowID = GetPresContext()->Document()->InnerWindowID();
rv = scriptError->InitWithWindowID(NS_ConvertUTF8toUTF16(msg).get(),
href.get(), // file
text.get(), // src line
0, 0, // line & column number
aFlags, // flags
"CSS Loader", // category (make separate?)
innerWindowID);
if (NS_SUCCEEDED(rv)) {
console->LogMessage(scriptError);
}
return NS_OK;
}
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