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Bug 1028497 - Part 4: Move the nsUserFontSet object into FontFaceSet. r=jdaggett

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This (a) moves ownership of the gfxUserFontSet into FontFaceSet, (b) moves
nearly all of the functionality of nsUserFontSet into FontFaceSet, and (c)
adds a class that inherits from gfxUserFontSet so that we can override some
of its virtual functions and delegate them to the FontFaceSet.
This commit is contained in:
Cameron McCormack 2014-10-02 12:32:05 +10:00
parent 57b587aadd
commit 1ab9074459
9 changed files with 1096 additions and 916 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
gfx/thebes/gfxUserFontSet.cpp
View File

@ -264,6 +264,24 @@ gfxUserFontEntry::StoreUserFontData(gfxFontEntry* aFontEntry,
}
}
void
gfxUserFontEntry::GetFamilyNameAndURIForLogging(nsACString& aFamilyName,
nsACString& aURI)
{
aFamilyName.Assign(NS_ConvertUTF16toUTF8(mFamilyName));
aURI.Truncate();
if (mSrcIndex == mSrcList.Length()) {
aURI.AppendLiteral("(end of source list)");
} else {
if (mSrcList[mSrcIndex].mURI) {
mSrcList[mSrcIndex].mURI->GetSpec(aURI);
} else {
aURI.AppendLiteral("(invalid URI)");
}
}
}
struct WOFFHeader {
AutoSwap_PRUint32 signature;
AutoSwap_PRUint32 flavor;

9
gfx/thebes/gfxUserFontSet.h
View File

@ -524,6 +524,15 @@ public:
// a valid font resource is found or all sources fail
void Load();
// methods to expose some information to FontFaceSet::UserFontSet
// since we can't make that class a friend
void SetLoader(nsFontFaceLoader* aLoader) { mLoader = aLoader; }
nsFontFaceLoader* GetLoader() { return mLoader; }
nsIPrincipal* GetPrincipal() { return mPrincipal; }
uint32_t GetSrcIndex() { return mSrcIndex; }
void GetFamilyNameAndURIForLogging(nsACString& aFamilyName,
nsACString& aURI);
protected:
const uint8_t* SanitizeOpenTypeData(const uint8_t* aData,
uint32_t aLength,

55
layout/base/nsPresContext.cpp
View File

@ -60,7 +60,7 @@
#include "gfxPrefs.h"
#include "nsIDOMChromeWindow.h"
#include "nsFrameLoader.h"
#include "mozilla/dom/FontFaceSet.h"
#include "nsContentUtils.h"
#include "nsPIWindowRoot.h"
#include "mozilla/Preferences.h"
@ -237,8 +237,7 @@ nsPresContext::nsPresContext(nsIDocument* aDocument, nsPresContextType aType)
mNeverAnimate = false;
}
NS_ASSERTION(mDocument, "Null document");
mUserFontSet = nullptr;
mUserFontSetDirty = true;
mFontFaceSetDirty = true;
mCounterStylesDirty = true;
@ -1094,10 +1093,10 @@ nsPresContext::Init(nsDeviceContext* aDeviceContext)
void
nsPresContext::SetShell(nsIPresShell* aShell)
{
if (mUserFontSet) {
if (mFontFaceSet) {
// Clear out user font set if we have one
mUserFontSet->Destroy();
NS_RELEASE(mUserFontSet);
mFontFaceSet->DestroyUserFontSet();
mFontFaceSet = nullptr;
}
if (mShell) {
@ -2068,7 +2067,7 @@ nsPresContext::GetUserFontSetInternal()
// Set mGetUserFontSetCalled up front, so that FlushUserFontSet will actually
// flush.
mGetUserFontSetCalled = true;
if (mUserFontSetDirty) {
if (mFontFaceSetDirty) {
// If this assertion fails, and there have actually been changes to
// @font-face rules, then we will call StyleChangeReflow in
// FlushUserFontSet. If we're in the middle of reflow,
@ -2080,7 +2079,11 @@ nsPresContext::GetUserFontSetInternal()
FlushUserFontSet();
}
return mUserFontSet;
if (!mFontFaceSet) {
return nullptr;
}
return mFontFaceSet->GetUserFontSet();
}
gfxUserFontSet*
@ -2098,17 +2101,16 @@ nsPresContext::FlushUserFontSet()
if (!mGetUserFontSetCalled) {
return; // No one cares about this font set yet, but we want to be careful
// to not unset our mUserFontSetDirty bit, so when someone really
// to not unset our mFontFaceSetDirty bit, so when someone really
// does we'll create it.
}
if (mUserFontSetDirty) {
if (mFontFaceSetDirty) {
if (gfxPlatform::GetPlatform()->DownloadableFontsEnabled()) {
nsTArray<nsFontFaceRuleContainer> rules;
if (!mShell->StyleSet()->AppendFontFaceRules(this, rules)) {
if (mUserFontSet) {
mUserFontSet->Destroy();
NS_RELEASE(mUserFontSet);
if (mFontFaceSet) {
mFontFaceSet->DestroyUserFontSet();
}
return;
}
@ -2116,17 +2118,16 @@ nsPresContext::FlushUserFontSet()
bool changed = false;
if (rules.Length() == 0) {
if (mUserFontSet) {
mUserFontSet->Destroy();
NS_RELEASE(mUserFontSet);
if (mFontFaceSet) {
mFontFaceSet->DestroyUserFontSet();
changed = true;
}
} else {
if (!mUserFontSet) {
mUserFontSet = new nsUserFontSet(this);
NS_ADDREF(mUserFontSet);
if (!mFontFaceSet) {
mFontFaceSet = new FontFaceSet(mDocument->GetInnerWindow(), this);
}
changed = mUserFontSet->UpdateRules(rules);
mFontFaceSet->EnsureUserFontSet(this);
changed = mFontFaceSet->UpdateRules(rules);
}
// We need to enqueue a style change reflow (for later) to
@ -2138,7 +2139,7 @@ nsPresContext::FlushUserFontSet()
}
}
mUserFontSetDirty = false;
mFontFaceSetDirty = false;
}
}
@ -2152,7 +2153,7 @@ nsPresContext::RebuildUserFontSet()
return;
}
mUserFontSetDirty = true;
mFontFaceSetDirty = true;
mDocument->SetNeedStyleFlush();
// Somebody has already asked for the user font set, so we need to
@ -2192,6 +2193,16 @@ nsPresContext::UserFontSetUpdated()
PostRebuildAllStyleDataEvent(NS_STYLE_HINT_REFLOW);
}
FontFaceSet*
nsPresContext::Fonts()
{
if (!mFontFaceSet) {
mFontFaceSet = new FontFaceSet(mDocument->GetInnerWindow(), this);
GetUserFontSet(); // this will cause the user font set to be created/updated
}
return mFontFaceSet;
}
void
nsPresContext::FlushCounterStyles()
{

10
layout/base/nsPresContext.h
View File

@ -58,7 +58,6 @@ struct nsStyleBorder;
class nsIRunnable;
class gfxUserFontSet;
class gfxTextPerfMetrics;
class nsUserFontSet;
struct nsFontFaceRuleContainer;
class nsPluginFrame;
class nsTransitionManager;
@ -72,6 +71,7 @@ class EventStateManager;
class RestyleManager;
class CounterStyleManager;
namespace dom {
class FontFaceSet;
class MediaQueryList;
}
namespace layers {
@ -871,6 +871,8 @@ public:
// user font set is changed and fonts become unavailable).
void UserFontSetUpdated();
mozilla::dom::FontFaceSet* Fonts();
void FlushCounterStyles();
void RebuildCounterStyles(); // asynchronously
@ -1247,7 +1249,7 @@ protected:
nsInvalidateRequestList mUndeliveredInvalidateRequestsBeforeLastPaint;
// container for per-context fonts (downloadable, SVG, etc.)
nsUserFontSet* mUserFontSet;
nsRefPtr<mozilla::dom::FontFaceSet> mFontFaceSet;
// text performance metrics
nsAutoPtr<gfxTextPerfMetrics> mTextPerf;
@ -1328,8 +1330,8 @@ protected:
// Has there been a change to the viewport's dimensions?
unsigned mPendingViewportChange : 1;
// Is the current mUserFontSet valid?
unsigned mUserFontSetDirty : 1;
// Is the current mFontFaceSet valid?
unsigned mFontFaceSetDirty : 1;
// Has GetUserFontSet() been called?
unsigned mGetUserFontSetCalled : 1;
// Do we currently have an event posted to call FlushUserFontSet?

13
layout/inspector/nsFontFace.cpp
View File

@ -10,6 +10,10 @@
#include "nsFontFaceLoader.h"
#include "mozilla/gfx/2D.h"
#include "zlib.h"
#include "mozilla/dom/FontFaceSet.h"
using namespace mozilla;
using namespace mozilla::dom;
nsFontFace::nsFontFace(gfxFontEntry* aFontEntry,
gfxFontGroup* aFontGroup,
@ -88,10 +92,13 @@ nsFontFace::GetRule(nsIDOMCSSFontFaceRule **aRule)
// in the relevant font group's user font set
nsCSSFontFaceRule* rule = nullptr;
if (mFontEntry->IsUserFont()) {
nsUserFontSet* fontSet =
static_cast<nsUserFontSet*>(mFontGroup->GetUserFontSet());
FontFaceSet::UserFontSet* fontSet =
static_cast<FontFaceSet::UserFontSet*>(mFontGroup->GetUserFontSet());
if (fontSet) {
rule = fontSet->FindRuleForEntry(mFontEntry);
FontFaceSet* fontFaceSet = fontSet->GetFontFaceSet();
if (fontFaceSet) {
rule = fontFaceSet->FindRuleForEntry(mFontEntry);
}
}
}

882
layout/style/FontFaceSet.cpp
View File

@ -6,11 +6,48 @@
#include "FontFaceSet.h"
#ifdef MOZ_LOGGING
#define FORCE_PR_LOG /* Allow logging in the release build */
#endif /* MOZ_LOGGING */
#include "prlog.h"
#include "mozilla/dom/FontFaceSetBinding.h"
#include "mozilla/dom/Promise.h"
#include "nsCrossSiteListenerProxy.h"
#include "nsFontFaceLoader.h"
#include "nsIChannelPolicy.h"
#include "nsIConsoleService.h"
#include "nsIContentPolicy.h"
#include "nsIContentSecurityPolicy.h"
#include "nsIDocShell.h"
#include "nsIDocument.h"
#include "nsINetworkPredictor.h"
#include "nsIPresShell.h"
#include "nsIPrincipal.h"
#include "nsISupportsPriority.h"
#include "nsIWebNavigation.h"
#include "nsNetUtil.h"
#include "nsPresContext.h"
#include "nsPrintfCString.h"
#include "nsStyleSet.h"
using namespace mozilla;
using namespace mozilla::dom;
#ifdef PR_LOGGING
static PRLogModuleInfo*
GetFontFaceSetLog()
{
static PRLogModuleInfo* sLog;
if (!sLog)
sLog = PR_NewLogModule("fontfaceset");
return sLog;
}
#endif /* PR_LOGGING */
#define LOG(args) PR_LOG(GetFontFaceSetLog(), PR_LOG_DEBUG, args)
#define LOG_ENABLED() PR_LOG_TEST(GetFontFaceSetLog(), PR_LOG_DEBUG)
NS_IMPL_CYCLE_COLLECTION_INHERITED(FontFaceSet,
DOMEventTargetHelper,
mReady)
@ -20,15 +57,20 @@ NS_IMPL_RELEASE_INHERITED(FontFaceSet, DOMEventTargetHelper)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(FontFaceSet)
NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
FontFaceSet::FontFaceSet(nsPIDOMWindow* aWindow)
FontFaceSet::FontFaceSet(nsPIDOMWindow* aWindow, nsPresContext* aPresContext)
: DOMEventTargetHelper(aWindow)
, mPresContext(aPresContext)
{
MOZ_COUNT_CTOR(FontFaceSet);
MOZ_ASSERT(mPresContext);
}
FontFaceSet::~FontFaceSet()
{
MOZ_COUNT_DTOR(FontFaceSet);
NS_ASSERTION(mLoaders.Count() == 0, "mLoaders should have been emptied");
}
JSObject*
@ -37,6 +79,16 @@ FontFaceSet::WrapObject(JSContext* aContext)
return FontFaceSetBinding::Wrap(aContext, this);
}
FontFaceSet::UserFontSet*
FontFaceSet::EnsureUserFontSet(nsPresContext* aPresContext)
{
if (!mUserFontSet) {
mUserFontSet = new UserFontSet(this);
mPresContext = aPresContext;
}
return mUserFontSet;
}
already_AddRefed<Promise>
FontFaceSet::Load(const nsAString& aFont,
const nsAString& aText,
@ -107,3 +159,831 @@ FontFaceSet::Length()
{
return 0;
}
static PLDHashOperator DestroyIterator(nsPtrHashKey<nsFontFaceLoader>* aKey,
void* aUserArg)
{
aKey->GetKey()->Cancel();
return PL_DHASH_REMOVE;
}
void
FontFaceSet::DestroyUserFontSet()
{
mPresContext = nullptr;
mLoaders.EnumerateEntries(DestroyIterator, nullptr);
mRules.Clear();
mUserFontSet = nullptr;
}
void
FontFaceSet::RemoveLoader(nsFontFaceLoader* aLoader)
{
mLoaders.RemoveEntry(aLoader);
}
nsresult
FontFaceSet::StartLoad(gfxUserFontEntry* aUserFontEntry,
const gfxFontFaceSrc* aFontFaceSrc)
{
nsresult rv;
nsIPresShell* ps = mPresContext->PresShell();
if (!ps)
return NS_ERROR_FAILURE;
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 = aUserFontEntry->GetPrincipal()->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);
}
// Note we are calling NS_NewChannelInternal() with both a node and a
// principal. This is because the document where the font is being loaded
// might have a different origin from the principal of the stylesheet
// that initiated the font load.
rv = NS_NewChannelInternal(getter_AddRefs(channel),
aFontFaceSrc->mURI,
ps->GetDocument(),
aUserFontEntry->GetPrincipal(),
nsILoadInfo::SEC_NORMAL,
nsIContentPolicy::TYPE_FONT,
channelPolicy,
loadGroup);
NS_ENSURE_SUCCESS(rv, rv);
nsRefPtr<nsFontFaceLoader> fontLoader =
new nsFontFaceLoader(aUserFontEntry, aFontFaceSrc->mURI, this, channel);
if (!fontLoader)
return NS_ERROR_OUT_OF_MEMORY;
#ifdef PR_LOGGING
if (LOG_ENABLED()) {
nsAutoCString 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);
nsCOMPtr<nsISupportsPriority> priorityChannel(do_QueryInterface(channel));
if (priorityChannel) {
priorityChannel->AdjustPriority(nsISupportsPriority::PRIORITY_HIGH);
}
rv = NS_NewStreamLoader(getter_AddRefs(streamLoader), fontLoader);
NS_ENSURE_SUCCESS(rv, rv);
nsIDocument *document = ps->GetDocument();
mozilla::net::PredictorLearn(aFontFaceSrc->mURI, document->GetDocumentURI(),
nsINetworkPredictor::LEARN_LOAD_SUBRESOURCE,
loadGroup);
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, nullptr);
} else {
nsRefPtr<nsCORSListenerProxy> listener =
new nsCORSListenerProxy(streamLoader, aUserFontEntry->GetPrincipal(), false);
rv = listener->Init(channel);
if (NS_SUCCEEDED(rv)) {
rv = channel->AsyncOpen(listener, nullptr);
}
if (NS_FAILED(rv)) {
fontLoader->DropChannel(); // explicitly need to break ref cycle
}
}
if (NS_SUCCEEDED(rv)) {
mLoaders.PutEntry(fontLoader);
fontLoader->StartedLoading(streamLoader);
aUserFontEntry->SetLoader(fontLoader); // let the font entry remember the
// loader, in case we need to cancel it
}
return rv;
}
static PLDHashOperator DetachFontEntries(const nsAString& aKey,
nsRefPtr<gfxUserFontFamily>& aFamily,
void* aUserArg)
{
aFamily->DetachFontEntries();
return PL_DHASH_NEXT;
}
static PLDHashOperator RemoveIfEmpty(const nsAString& aKey,
nsRefPtr<gfxUserFontFamily>& aFamily,
void* aUserArg)
{
return aFamily->GetFontList().Length() ? PL_DHASH_NEXT : PL_DHASH_REMOVE;
}
bool
FontFaceSet::UpdateRules(const nsTArray<nsFontFaceRuleContainer>& aRules)
{
MOZ_ASSERT(mUserFontSet);
bool modified = false;
// The @font-face rules that make up the user font set have changed,
// so we need to update the set. However, we want to preserve existing
// font entries wherever possible, so that we don't discard and then
// re-download resources in the (common) case where at least some of the
// same rules are still present.
nsTArray<FontFaceRuleRecord> oldRules;
mRules.SwapElements(oldRules);
// Remove faces from the font family records; we need to re-insert them
// because we might end up with faces in a different order even if they're
// the same font entries as before. (The order can affect font selection
// where multiple faces match the requested style, perhaps with overlapping
// unicode-range coverage.)
mUserFontSet->mFontFamilies.Enumerate(DetachFontEntries, nullptr);
for (uint32_t 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);
}
// Remove any residual families that have no font entries (i.e., they were
// not defined at all by the updated set of @font-face rules).
mUserFontSet->mFontFamilies.Enumerate(RemoveIfEmpty, nullptr);
// If any rules are left in the old list, note that the set has changed
// (even if the new set was built entirely by migrating old font entries).
if (oldRules.Length() > 0) {
modified = true;
// Any in-progress loaders for obsolete rules should be cancelled,
// as the resource being downloaded will no longer be required.
// We need to explicitly remove any loaders here, otherwise the loaders
// will keep their "orphaned" font entries alive until they complete,
// even after the oldRules array is deleted.
size_t count = oldRules.Length();
for (size_t i = 0; i < count; ++i) {
gfxUserFontEntry* userFontEntry = oldRules[i].mUserFontEntry;
nsFontFaceLoader* loader = userFontEntry->GetLoader();
if (loader) {
loader->Cancel();
RemoveLoader(loader);
}
}
}
if (modified) {
IncrementGeneration(true);
}
// local rules have been rebuilt, so clear the flag
mUserFontSet->mLocalRulesUsed = false;
return modified;
}
static bool
HasLocalSrc(const nsCSSValue::Array *aSrcArr)
{
size_t numSrc = aSrcArr->Count();
for (size_t i = 0; i < numSrc; i++) {
if (aSrcArr->Item(i).GetUnit() == eCSSUnit_Local_Font) {
return true;
}
}
return false;
}
void
FontFaceSet::IncrementGeneration(bool aIsRebuild)
{
MOZ_ASSERT(mUserFontSet);
mUserFontSet->IncrementGeneration(aIsRebuild);
}
void
FontFaceSet::InsertRule(nsCSSFontFaceRule* aRule, uint8_t 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;
uint32_t 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 (uint32_t i = 0; i < aOldRules.Length(); ++i) {
const FontFaceRuleRecord& ruleRec = aOldRules[i];
if (ruleRec.mContainer.mRule == aRule &&
ruleRec.mContainer.mSheetType == aSheetType) {
// if local rules were used, don't use the old font entry
// for rules containing src local usage
if (mUserFontSet->mLocalRulesUsed) {
aRule->GetDesc(eCSSFontDesc_Src, val);
unit = val.GetUnit();
if (unit == eCSSUnit_Array && HasLocalSrc(val.GetArrayValue())) {
break;
}
}
mUserFontSet->AddFontFace(fontfamily, ruleRec.mUserFontEntry);
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:
FontFaceRuleRecord ruleRec;
ruleRec.mUserFontEntry =
FindOrCreateFontFaceFromRule(fontfamily, aRule, aSheetType);
if (!ruleRec.mUserFontEntry) {
return;
}
ruleRec.mContainer.mRule = aRule;
ruleRec.mContainer.mSheetType = aSheetType;
// Add the entry to the end of the list. If an existing userfont entry was
// returned by FindOrCreateFontFaceFromRule that was already stored on the
// family, gfxUserFontFamily::AddFontEntry(), which AddFontFace calls,
// will automatically remove the earlier occurrence of the same userfont entry.
mUserFontSet->AddFontFace(fontfamily, ruleRec.mUserFontEntry);
mRules.AppendElement(ruleRec);
// this was a new rule and font entry, so note that the set was modified
aFontSetModified = true;
}
already_AddRefed<gfxUserFontEntry>
FontFaceSet::FindOrCreateFontFaceFromRule(const nsAString& aFamilyName,
nsCSSFontFaceRule* aRule,
uint8_t aSheetType)
{
nsCSSValue val;
uint32_t unit;
uint32_t weight = NS_STYLE_FONT_WEIGHT_NORMAL;
int32_t stretch = NS_STYLE_FONT_STRETCH_NORMAL;
uint32_t italicStyle = NS_STYLE_FONT_STYLE_NORMAL;
uint32_t languageOverride = NO_FONT_LANGUAGE_OVERRIDE;
// set up weight
aRule->GetDesc(eCSSFontDesc_Weight, val);
unit = val.GetUnit();
if (unit == eCSSUnit_Integer || unit == eCSSUnit_Enumerated) {
weight = val.GetIntValue();
if (weight == 0) {
weight = NS_STYLE_FONT_WEIGHT_NORMAL;
}
} 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 = NS_STYLE_FONT_STYLE_NORMAL;
} else {
NS_ASSERTION(unit == eCSSUnit_Null,
"@font-face style has unexpected unit");
}
// set up font features
nsTArray<gfxFontFeature> featureSettings;
aRule->GetDesc(eCSSFontDesc_FontFeatureSettings, val);
unit = val.GetUnit();
if (unit == eCSSUnit_Normal) {
// empty list of features
} else if (unit == eCSSUnit_PairList || unit == eCSSUnit_PairListDep) {
nsRuleNode::ComputeFontFeatures(val.GetPairListValue(), 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) {
nsString stringValue;
val.GetStringValue(stringValue);
languageOverride = gfxFontStyle::ParseFontLanguageOverride(stringValue);
} 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 nullptr;
switch (unit) {
case eCSSUnit_Local_Font:
val.GetStringValue(face->mLocalName);
face->mIsLocal = true;
face->mURI = nullptr;
face->mFormatFlags = 0;
break;
case eCSSUnit_URL:
face->mIsLocal = false;
face->mURI = val.GetURLValue();
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 |= gfxUserFontSet::FLAG_FORMAT_WOFF;
} else if (valueString.LowerCaseEqualsASCII("opentype")) {
face->mFormatFlags |= gfxUserFontSet::FLAG_FORMAT_OPENTYPE;
} else if (valueString.LowerCaseEqualsASCII("truetype")) {
face->mFormatFlags |= gfxUserFontSet::FLAG_FORMAT_TRUETYPE;
} else if (valueString.LowerCaseEqualsASCII("truetype-aat")) {
face->mFormatFlags |= gfxUserFontSet::FLAG_FORMAT_TRUETYPE_AAT;
} else if (valueString.LowerCaseEqualsASCII("embedded-opentype")) {
face->mFormatFlags |= gfxUserFontSet::FLAG_FORMAT_EOT;
} else if (valueString.LowerCaseEqualsASCII("svg")) {
face->mFormatFlags |= gfxUserFontSet::FLAG_FORMAT_SVG;
} else {
// unknown format specified, mark to distinguish from the
// case where no format hints are specified
face->mFormatFlags |= gfxUserFontSet::FLAG_FORMAT_UNKNOWN;
}
i++;
}
if (!face->mURI) {
// if URI not valid, omit from src array
srcArray.RemoveElementAt(srcArray.Length() - 1);
NS_WARNING("null url in @font-face rule");
continue;
}
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.IsEmpty()) {
return nullptr;
}
nsRefPtr<gfxUserFontEntry> entry =
mUserFontSet->FindOrCreateFontFace(aFamilyName, srcArray, weight, stretch,
italicStyle, featureSettings,
languageOverride,
nullptr /* aUnicodeRanges */);
return entry.forget();
}
nsCSSFontFaceRule*
FontFaceSet::FindRuleForEntry(gfxFontEntry* aFontEntry)
{
NS_ASSERTION(!aFontEntry->mIsUserFontContainer, "only platform font entries");
for (uint32_t i = 0; i < mRules.Length(); ++i) {
if (mRules[i].mUserFontEntry->GetPlatformFontEntry() == aFontEntry) {
return mRules[i].mContainer.mRule;
}
}
return nullptr;
}
nsCSSFontFaceRule*
FontFaceSet::FindRuleForUserFontEntry(gfxUserFontEntry* aUserFontEntry)
{
for (uint32_t i = 0; i < mRules.Length(); ++i) {
if (mRules[i].mUserFontEntry == aUserFontEntry) {
return mRules[i].mContainer.mRule;
}
}
return nullptr;
}
nsresult
FontFaceSet::LogMessage(gfxUserFontEntry* aUserFontEntry,
const char* aMessage,
uint32_t aFlags,
nsresult aStatus)
{
nsCOMPtr<nsIConsoleService>
console(do_GetService(NS_CONSOLESERVICE_CONTRACTID));
if (!console) {
return NS_ERROR_NOT_AVAILABLE;
}
nsAutoCString familyName;
nsAutoCString fontURI;
aUserFontEntry->GetFamilyNameAndURIForLogging(familyName, fontURI);
char weightKeywordBuf[8]; // plenty to sprintf() a uint16_t
const char* weightKeyword;
const nsAFlatCString& weightKeywordString =
nsCSSProps::ValueToKeyword(aUserFontEntry->Weight(),
nsCSSProps::kFontWeightKTable);
if (weightKeywordString.Length() > 0) {
weightKeyword = weightKeywordString.get();
} else {
sprintf(weightKeywordBuf, "%u", aUserFontEntry->Weight());
weightKeyword = weightKeywordBuf;
}
nsPrintfCString message
("downloadable font: %s "
"(font-family: \"%s\" style:%s weight:%s stretch:%s src index:%d)",
aMessage,
familyName.get(),
aUserFontEntry->IsItalic() ? "italic" : "normal",
weightKeyword,
nsCSSProps::ValueToKeyword(aUserFontEntry->Stretch(),
nsCSSProps::kFontStretchKTable).get(),
aUserFontEntry->GetSrcIndex());
if (NS_FAILED(aStatus)) {
message.AppendLiteral(": ");
switch (aStatus) {
case NS_ERROR_DOM_BAD_URI:
message.AppendLiteral("bad URI or cross-site access not allowed");
break;
case NS_ERROR_CONTENT_BLOCKED:
message.AppendLiteral("content blocked");
break;
default:
message.AppendLiteral("status=");
message.AppendInt(static_cast<uint32_t>(aStatus));
break;
}
}
message.AppendLiteral("\nsource: ");
message.Append(fontURI);
#ifdef PR_LOGGING
if (PR_LOG_TEST(GetFontFaceSetLog(), PR_LOG_DEBUG)) {
PR_LOG(GetFontFaceSetLog(), PR_LOG_DEBUG,
("userfonts (%p) %s", this, message.get()));
}
#endif
// try to give the user an indication of where the rule came from
nsCSSFontFaceRule* rule = FindRuleForUserFontEntry(aUserFontEntry);
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);
// if the style sheet is removed while the font is loading can be null
if (sheet) {
rv = sheet->GetHref(href);
NS_ENSURE_SUCCESS(rv, rv);
} else {
NS_WARNING("null parent stylesheet for @font-face rule");
href.AssignLiteral("unknown");
}
}
nsCOMPtr<nsIScriptError> scriptError =
do_CreateInstance(NS_SCRIPTERROR_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
uint64_t innerWindowID = GetPresContext()->Document()->InnerWindowID();
rv = scriptError->InitWithWindowID(NS_ConvertUTF8toUTF16(message),
href, // file
text, // 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;
}
nsresult
FontFaceSet::CheckFontLoad(const gfxFontFaceSrc* aFontFaceSrc,
nsIPrincipal** aPrincipal,
bool* aBypassCache)
{
// 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
*aPrincipal = ps->GetDocument()->NodePrincipal();
NS_ASSERTION(aFontFaceSrc->mOriginPrincipal,
"null origin principal in @font-face rule");
if (aFontFaceSrc->mUseOriginPrincipal) {
*aPrincipal = aFontFaceSrc->mOriginPrincipal;
}
nsresult rv = nsFontFaceLoader::CheckLoadAllowed(*aPrincipal,
aFontFaceSrc->mURI,
ps->GetDocument());
if (NS_FAILED(rv)) {
return rv;
}
*aBypassCache = false;
nsCOMPtr<nsIDocShell> docShell = ps->GetDocument()->GetDocShell();
if (docShell) {
uint32_t loadType;
if (NS_SUCCEEDED(docShell->GetLoadType(&loadType))) {
if ((loadType >> 16) & nsIWebNavigation::LOAD_FLAGS_BYPASS_CACHE) {
*aBypassCache = true;
}
}
}
return rv;
}
nsresult
FontFaceSet::SyncLoadFontData(gfxUserFontEntry* aFontToLoad,
const gfxFontFaceSrc* aFontFaceSrc,
uint8_t*& aBuffer,
uint32_t& aBufferLength)
{
nsresult rv;
nsCOMPtr<nsIChannel> channel;
// get Content Security Policy from principal to pass into channel
nsCOMPtr<nsIChannelPolicy> channelPolicy;
nsCOMPtr<nsIContentSecurityPolicy> csp;
rv = aFontToLoad->GetPrincipal()->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);
}
nsIPresShell* ps = mPresContext->PresShell();
if (!ps) {
return NS_ERROR_FAILURE;
}
// Note we are calling NS_NewChannelInternal() with both a node and a
// principal. This is because the document where the font is being loaded
// might have a different origin from the principal of the stylesheet
// that initiated the font load.
rv = NS_NewChannelInternal(getter_AddRefs(channel),
aFontFaceSrc->mURI,
ps->GetDocument(),
aFontToLoad->GetPrincipal(),
nsILoadInfo::SEC_NORMAL,
nsIContentPolicy::TYPE_FONT,
channelPolicy);
NS_ENSURE_SUCCESS(rv, rv);
// blocking stream is OK for data URIs
nsCOMPtr<nsIInputStream> stream;
rv = channel->Open(getter_AddRefs(stream));
NS_ENSURE_SUCCESS(rv, rv);
uint64_t bufferLength64;
rv = stream->Available(&bufferLength64);
NS_ENSURE_SUCCESS(rv, rv);
if (bufferLength64 == 0) {
return NS_ERROR_FAILURE;
}
if (bufferLength64 > UINT32_MAX) {
return NS_ERROR_FILE_TOO_BIG;
}
aBufferLength = static_cast<uint32_t>(bufferLength64);
// read all the decoded data
aBuffer = static_cast<uint8_t*> (NS_Alloc(sizeof(uint8_t) * aBufferLength));
if (!aBuffer) {
aBufferLength = 0;
return NS_ERROR_OUT_OF_MEMORY;
}
uint32_t numRead, totalRead = 0;
while (NS_SUCCEEDED(rv =
stream->Read(reinterpret_cast<char*>(aBuffer + totalRead),
aBufferLength - totalRead, &numRead)) &&
numRead != 0)
{
totalRead += numRead;
if (totalRead > aBufferLength) {
rv = NS_ERROR_FAILURE;
break;
}
}
// make sure there's a mime type
if (NS_SUCCEEDED(rv)) {
nsAutoCString mimeType;
rv = channel->GetContentType(mimeType);
aBufferLength = totalRead;
}
if (NS_FAILED(rv)) {
NS_Free(aBuffer);
aBuffer = nullptr;
aBufferLength = 0;
return rv;
}
return NS_OK;
}
bool
FontFaceSet::GetPrivateBrowsing()
{
nsIPresShell* ps = mPresContext->PresShell();
if (!ps) {
return false;
}
nsCOMPtr<nsILoadContext> loadContext = ps->GetDocument()->GetLoadContext();
return loadContext && loadContext->UsePrivateBrowsing();
}
void
FontFaceSet::DoRebuildUserFontSet()
{
if (!mPresContext) {
// AFAICS, this can only happen if someone has already called Destroy() on
// this font-set, which means it is in the process of being torn down --
// so there's no point trying to update its rules.
return;
}
mPresContext->RebuildUserFontSet();
}
// -- FontFaceSet::UserFontSet ------------------------------------------------
/* virtual */ nsresult
FontFaceSet::UserFontSet::CheckFontLoad(const gfxFontFaceSrc* aFontFaceSrc,
nsIPrincipal** aPrincipal,
bool* aBypassCache)
{
if (!mFontFaceSet) {
return NS_ERROR_FAILURE;
}
return mFontFaceSet->CheckFontLoad(aFontFaceSrc, aPrincipal, aBypassCache);
}
/* virtual */ nsresult
FontFaceSet::UserFontSet::StartLoad(gfxUserFontEntry* aUserFontEntry,
const gfxFontFaceSrc* aFontFaceSrc)
{
if (!mFontFaceSet) {
return NS_ERROR_FAILURE;
}
return mFontFaceSet->StartLoad(aUserFontEntry, aFontFaceSrc);
}
/* virtual */ nsresult
FontFaceSet::UserFontSet::LogMessage(gfxUserFontEntry* aUserFontEntry,
const char* aMessage,
uint32_t aFlags,
nsresult aStatus)
{
if (!mFontFaceSet) {
return NS_ERROR_FAILURE;
}
return mFontFaceSet->LogMessage(aUserFontEntry, aMessage, aFlags, aStatus);
}
/* virtual */ nsresult
FontFaceSet::UserFontSet::SyncLoadFontData(gfxUserFontEntry* aFontToLoad,
const gfxFontFaceSrc* aFontFaceSrc,
uint8_t*& aBuffer,
uint32_t& aBufferLength)
{
if (!mFontFaceSet) {
return NS_ERROR_FAILURE;
}
return mFontFaceSet->SyncLoadFontData(aFontToLoad, aFontFaceSrc,
aBuffer, aBufferLength);
}
/* virtual */ bool
FontFaceSet::UserFontSet::GetPrivateBrowsing()
{
return mFontFaceSet && mFontFaceSet->GetPrivateBrowsing();
}
/* virtual */ void
FontFaceSet::UserFontSet::DoRebuildUserFontSet()
{
if (!mFontFaceSet) {
return;
}
mFontFaceSet->DoRebuildUserFontSet();
}

123
layout/style/FontFaceSet.h
View File

@ -8,8 +8,14 @@
#include "mozilla/DOMEventTargetHelper.h"
#include "mozilla/dom/FontFaceSetBinding.h"
#include "gfxUserFontSet.h"
#include "nsCSSRules.h"
#include "nsPIDOMWindow.h"
struct gfxFontFaceSrc;
class gfxUserFontEntry;
class nsFontFaceLoader;
class nsIPrincipal;
class nsPIDOMWindow;
namespace mozilla {
@ -24,15 +30,81 @@ namespace dom {
class FontFaceSet MOZ_FINAL : public DOMEventTargetHelper
{
friend class UserFontSet;
public:
/**
* A gfxUserFontSet that integrates with the layout and style systems to
* manage @font-face rules and handle network requests for font loading.
*
* We would combine this class and FontFaceSet into the one class if it were
* possible; it's not because FontFaceSet is cycle collected and
* gfxUserFontSet isn't (and can't be, as gfx classes don't use the cycle
* collector). So UserFontSet exists just to override the needed virtual
* methods from gfxUserFontSet and to forward them on FontFaceSet.
*/
class UserFontSet MOZ_FINAL : public gfxUserFontSet
{
friend class FontFaceSet;
public:
UserFontSet(FontFaceSet* aFontFaceSet)
: mFontFaceSet(aFontFaceSet)
{
}
FontFaceSet* GetFontFaceSet() { return mFontFaceSet; }
virtual nsresult CheckFontLoad(const gfxFontFaceSrc* aFontFaceSrc,
nsIPrincipal** aPrincipal,
bool* aBypassCache) MOZ_OVERRIDE;
virtual nsresult StartLoad(gfxUserFontEntry* aUserFontEntry,
const gfxFontFaceSrc* aFontFaceSrc) MOZ_OVERRIDE;
protected:
virtual bool GetPrivateBrowsing() MOZ_OVERRIDE;
virtual nsresult SyncLoadFontData(gfxUserFontEntry* aFontToLoad,
const gfxFontFaceSrc* aFontFaceSrc,
uint8_t*& aBuffer,
uint32_t& aBufferLength) MOZ_OVERRIDE;
virtual nsresult LogMessage(gfxUserFontEntry* aUserFontEntry,
const char* aMessage,
uint32_t aFlags = nsIScriptError::errorFlag,
nsresult aStatus = NS_OK) MOZ_OVERRIDE;
virtual void DoRebuildUserFontSet() MOZ_OVERRIDE;
private:
nsRefPtr<FontFaceSet> mFontFaceSet;
};
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(FontFaceSet, DOMEventTargetHelper)
FontFaceSet(nsPIDOMWindow* aWindow);
FontFaceSet(nsPIDOMWindow* aWindow, nsPresContext* aPresContext);
virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;
// Web IDL
UserFontSet* EnsureUserFontSet(nsPresContext* aPresContext);
UserFontSet* GetUserFontSet() { return mUserFontSet; }
// Called when this font set is no longer associated with a presentation.
void DestroyUserFontSet();
// Called by nsFontFaceLoader when the loader has completed normally.
// It's removed from the mLoaders set.
void RemoveLoader(nsFontFaceLoader* aLoader);
bool UpdateRules(const nsTArray<nsFontFaceRuleContainer>& aRules);
nsPresContext* GetPresContext() { return mPresContext; }
// search for @font-face rule that matches a platform font entry
nsCSSFontFaceRule* FindRuleForEntry(gfxFontEntry* aFontEntry);
void IncrementGeneration(bool aIsRebuild = false);
// -- Web IDL --------------------------------------------------------------
IMPL_EVENT_HANDLER(loading)
IMPL_EVENT_HANDLER(loadingdone)
IMPL_EVENT_HANDLER(loadingerror)
@ -55,7 +127,54 @@ public:
private:
~FontFaceSet();
// The font-set keeps track of the collection of rules, and their
// corresponding font entries (whether proxies or real entries),
// so that we can update the set without having to throw away
// all the existing fonts.
struct FontFaceRuleRecord {
nsRefPtr<gfxUserFontEntry> mUserFontEntry;
nsFontFaceRuleContainer mContainer;
};
void InsertRule(nsCSSFontFaceRule* aRule, uint8_t aSheetType,
nsTArray<FontFaceRuleRecord>& oldRules,
bool& aFontSetModified);
already_AddRefed<gfxUserFontEntry> FindOrCreateFontFaceFromRule(
const nsAString& aFamilyName,
nsCSSFontFaceRule* aRule,
uint8_t aSheetType);
// search for @font-face rule that matches a userfont font entry
nsCSSFontFaceRule* FindRuleForUserFontEntry(gfxUserFontEntry* aUserFontEntry);
nsresult StartLoad(gfxUserFontEntry* aUserFontEntry,
const gfxFontFaceSrc* aFontFaceSrc);
nsresult CheckFontLoad(const gfxFontFaceSrc* aFontFaceSrc,
nsIPrincipal** aPrincipal,
bool* aBypassCache);
bool GetPrivateBrowsing();
nsresult SyncLoadFontData(gfxUserFontEntry* aFontToLoad,
const gfxFontFaceSrc* aFontFaceSrc,
uint8_t*& aBuffer,
uint32_t& aBufferLength);
nsresult LogMessage(gfxUserFontEntry* aUserFontEntry,
const char* aMessage,
uint32_t aFlags,
nsresult aStatus);
void DoRebuildUserFontSet();
nsRefPtr<UserFontSet> mUserFontSet;
nsPresContext* mPresContext;
nsRefPtr<mozilla::dom::Promise> mReady;
// Set of all loaders pointing to us. These are not strong pointers,
// but that's OK because nsFontFaceLoader always calls RemoveLoader on
// us before it dies (unless we die first).
nsTHashtable< nsPtrHashKey<nsFontFaceLoader> > mLoaders;
nsTArray<FontFaceRuleRecord> mRules;
};
} // namespace dom

814
layout/style/nsFontFaceLoader.cpp
View File

@ -14,28 +14,16 @@
#include "nsFontFaceLoader.h"
#include "nsError.h"
#include "nsNetUtil.h"
#include "nsContentUtils.h"
#include "mozilla/Preferences.h"
#include "FontFaceSet.h"
#include "nsPresContext.h"
#include "nsIPresShell.h"
#include "nsIPrincipal.h"
#include "nsIScriptSecurityManager.h"
#include "nsIHttpChannel.h"
#include "nsIContentPolicy.h"
#include "nsContentPolicyUtils.h"
#include "nsCrossSiteListenerProxy.h"
#include "nsIContentSecurityPolicy.h"
#include "nsIDocShell.h"
#include "nsIWebNavigation.h"
#include "nsISupportsPriority.h"
#include "nsINetworkPredictor.h"
#include "nsIConsoleService.h"
#include "nsStyleSet.h"
#include "nsPrintfCString.h"
#include "mozilla/gfx/2D.h"
using namespace mozilla;
@ -57,11 +45,11 @@ GetFontDownloaderLog()
nsFontFaceLoader::nsFontFaceLoader(gfxUserFontEntry* aUserFontEntry,
nsIURI* aFontURI,
nsUserFontSet* aFontSet,
mozilla::dom::FontFaceSet* aFontFaceSet,
nsIChannel* aChannel)
: mUserFontEntry(aUserFontEntry),
mFontURI(aFontURI),
mFontSet(aFontSet),
mFontFaceSet(aFontFaceSet),
mChannel(aChannel)
{
}
@ -75,8 +63,8 @@ nsFontFaceLoader::~nsFontFaceLoader()
mLoadTimer->Cancel();
mLoadTimer = nullptr;
}
if (mFontSet) {
mFontSet->RemoveLoader(this);
if (mFontFaceSet) {
mFontFaceSet->RemoveLoader(this);
}
}
@ -104,7 +92,7 @@ nsFontFaceLoader::LoadTimerCallback(nsITimer* aTimer, void* aClosure)
{
nsFontFaceLoader* loader = static_cast<nsFontFaceLoader*>(aClosure);
if (!loader->mFontSet) {
if (!loader->mFontFaceSet) {
// We've been canceled
return;
}
@ -143,11 +131,10 @@ nsFontFaceLoader::LoadTimerCallback(nsITimer* aTimer, void* aClosure)
// font will be used in the meantime, and tell the context to refresh.
if (updateUserFontSet) {
ufe->mFontDataLoadingState = gfxUserFontEntry::LOADING_SLOWLY;
gfxUserFontSet* fontSet = loader->mFontSet;
nsPresContext* ctx = loader->mFontSet->GetPresContext();
nsPresContext* ctx = loader->mFontFaceSet->GetPresContext();
NS_ASSERTION(ctx, "userfontset doesn't have a presContext?");
if (ctx) {
fontSet->IncrementGeneration();
loader->mFontFaceSet->IncrementGeneration();
ctx->UserFontSetUpdated();
LOG(("fontdownloader (%p) timeout reflow\n", loader));
}
@ -163,12 +150,12 @@ nsFontFaceLoader::OnStreamComplete(nsIStreamLoader* aLoader,
uint32_t aStringLen,
const uint8_t* aString)
{
if (!mFontSet) {
if (!mFontFaceSet) {
// We've been canceled
return aStatus;
}
mFontSet->RemoveLoader(this);
mFontFaceSet->RemoveLoader(this);
#ifdef PR_LOGGING
if (LOG_ENABLED()) {
@ -184,7 +171,7 @@ nsFontFaceLoader::OnStreamComplete(nsIStreamLoader* aLoader,
}
#endif
nsPresContext* ctx = mFontSet->GetPresContext();
nsPresContext* ctx = mFontFaceSet->GetPresContext();
NS_ASSERTION(ctx && !ctx->PresShell()->IsDestroying(),
"We should have been canceled already");
@ -225,7 +212,7 @@ nsFontFaceLoader::OnStreamComplete(nsIStreamLoader* aLoader,
}
// done with font set
mFontSet = nullptr;
mFontFaceSet = nullptr;
if (mLoadTimer) {
mLoadTimer->Cancel();
mLoadTimer = nullptr;
@ -239,7 +226,7 @@ nsFontFaceLoader::Cancel()
{
mUserFontEntry->mFontDataLoadingState = gfxUserFontEntry::NOT_LOADING;
mUserFontEntry->mLoader = nullptr;
mFontSet = nullptr;
mFontFaceSet = nullptr;
if (mLoadTimer) {
mLoadTimer->Cancel();
mLoadTimer = nullptr;
@ -283,776 +270,3 @@ nsFontFaceLoader::CheckLoadAllowed(nsIPrincipal* aSourcePrincipal,
return NS_OK;
}
nsUserFontSet::nsUserFontSet(nsPresContext* aContext)
: mPresContext(aContext)
{
NS_ASSERTION(mPresContext, "null context passed to nsUserFontSet");
}
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 = nullptr;
mLoaders.EnumerateEntries(DestroyIterator, nullptr);
mRules.Clear();
}
void
nsUserFontSet::RemoveLoader(nsFontFaceLoader* aLoader)
{
mLoaders.RemoveEntry(aLoader);
}
nsresult
nsUserFontSet::StartLoad(gfxUserFontEntry* aUserFontEntry,
const gfxFontFaceSrc* aFontFaceSrc)
{
nsresult rv;
nsIPresShell* ps = mPresContext->PresShell();
if (!ps)
return NS_ERROR_FAILURE;
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 = aUserFontEntry->mPrincipal->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);
}
// Note we are calling NS_NewChannelInternal() with both a node and a
// principal. This is because the document where the font is being loaded
// might have a different origin from the principal of the stylesheet
// that initiated the font load.
rv = NS_NewChannelInternal(getter_AddRefs(channel),
aFontFaceSrc->mURI,
ps->GetDocument(),
aUserFontEntry->mPrincipal,
nsILoadInfo::SEC_NORMAL,
nsIContentPolicy::TYPE_FONT,
channelPolicy,
loadGroup);
NS_ENSURE_SUCCESS(rv, rv);
nsRefPtr<nsFontFaceLoader> fontLoader =
new nsFontFaceLoader(aUserFontEntry, aFontFaceSrc->mURI, this, channel);
if (!fontLoader)
return NS_ERROR_OUT_OF_MEMORY;
#ifdef PR_LOGGING
if (LOG_ENABLED()) {
nsAutoCString 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);
nsCOMPtr<nsISupportsPriority> priorityChannel(do_QueryInterface(channel));
if (priorityChannel) {
priorityChannel->AdjustPriority(nsISupportsPriority::PRIORITY_HIGH);
}
rv = NS_NewStreamLoader(getter_AddRefs(streamLoader), fontLoader);
NS_ENSURE_SUCCESS(rv, rv);
nsIDocument *document = ps->GetDocument();
mozilla::net::PredictorLearn(aFontFaceSrc->mURI, document->GetDocumentURI(),
nsINetworkPredictor::LEARN_LOAD_SUBRESOURCE,
loadGroup);
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, nullptr);
} else {
nsRefPtr<nsCORSListenerProxy> listener =
new nsCORSListenerProxy(streamLoader, aUserFontEntry->mPrincipal, false);
rv = listener->Init(channel);
if (NS_SUCCEEDED(rv)) {
rv = channel->AsyncOpen(listener, nullptr);
}
if (NS_FAILED(rv)) {
fontLoader->DropChannel(); // explicitly need to break ref cycle
}
}
if (NS_SUCCEEDED(rv)) {
mLoaders.PutEntry(fontLoader);
fontLoader->StartedLoading(streamLoader);
aUserFontEntry->mLoader = fontLoader; // let the font entry remember the
// loader, in case we need to cancel it
}
return rv;
}
static PLDHashOperator DetachFontEntries(const nsAString& aKey,
nsRefPtr<gfxUserFontFamily>& aFamily,
void* aUserArg)
{
aFamily->DetachFontEntries();
return PL_DHASH_NEXT;
}
static PLDHashOperator RemoveIfEmpty(const nsAString& aKey,
nsRefPtr<gfxUserFontFamily>& aFamily,
void* aUserArg)
{
return aFamily->GetFontList().Length() ? PL_DHASH_NEXT : PL_DHASH_REMOVE;
}
bool
nsUserFontSet::UpdateRules(const nsTArray<nsFontFaceRuleContainer>& aRules)
{
bool modified = false;
// The @font-face rules that make up the user font set have changed,
// so we need to update the set. However, we want to preserve existing
// font entries wherever possible, so that we don't discard and then
// re-download resources in the (common) case where at least some of the
// same rules are still present.
nsTArray<FontFaceRuleRecord> oldRules;
mRules.SwapElements(oldRules);
// Remove faces from the font family records; we need to re-insert them
// because we might end up with faces in a different order even if they're
// the same font entries as before. (The order can affect font selection
// where multiple faces match the requested style, perhaps with overlapping
// unicode-range coverage.)
mFontFamilies.Enumerate(DetachFontEntries, nullptr);
for (uint32_t 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);
}
// Remove any residual families that have no font entries (i.e., they were
// not defined at all by the updated set of @font-face rules).
mFontFamilies.Enumerate(RemoveIfEmpty, nullptr);
// If any rules are left in the old list, note that the set has changed
// (even if the new set was built entirely by migrating old font entries).
if (oldRules.Length() > 0) {
modified = true;
// Any in-progress loaders for obsolete rules should be cancelled,
// as the resource being downloaded will no longer be required.
// We need to explicitly remove any loaders here, otherwise the loaders
// will keep their "orphaned" font entries alive until they complete,
// even after the oldRules array is deleted.
size_t count = oldRules.Length();
for (size_t i = 0; i < count; ++i) {
gfxUserFontEntry* userFontEntry = oldRules[i].mUserFontEntry;
nsFontFaceLoader* loader = userFontEntry->mLoader;
if (loader) {
loader->Cancel();
RemoveLoader(loader);
}
}
}
if (modified) {
IncrementGeneration(true);
}
// local rules have been rebuilt, so clear the flag
mLocalRulesUsed = false;
return modified;
}
static bool
HasLocalSrc(const nsCSSValue::Array *aSrcArr)
{
size_t numSrc = aSrcArr->Count();
for (size_t i = 0; i < numSrc; i++) {
if (aSrcArr->Item(i).GetUnit() == eCSSUnit_Local_Font) {
return true;
}
}
return false;
}
void
nsUserFontSet::InsertRule(nsCSSFontFaceRule* aRule, uint8_t 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;
uint32_t 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 (uint32_t i = 0; i < aOldRules.Length(); ++i) {
const FontFaceRuleRecord& ruleRec = aOldRules[i];
if (ruleRec.mContainer.mRule == aRule &&
ruleRec.mContainer.mSheetType == aSheetType) {
// if local rules were used, don't use the old font entry
// for rules containing src local usage
if (mLocalRulesUsed) {
aRule->GetDesc(eCSSFontDesc_Src, val);
unit = val.GetUnit();
if (unit == eCSSUnit_Array && HasLocalSrc(val.GetArrayValue())) {
break;
}
}
AddFontFace(fontfamily, ruleRec.mUserFontEntry);
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:
FontFaceRuleRecord ruleRec;
ruleRec.mUserFontEntry =
FindOrCreateFontFaceFromRule(fontfamily, aRule, aSheetType);
if (!ruleRec.mUserFontEntry) {
return;
}
ruleRec.mContainer.mRule = aRule;
ruleRec.mContainer.mSheetType = aSheetType;
// Add the entry to the end of the list. If an existing userfont entry was
// returned by FindOrCreateFontFaceFromRule that was already stored on the
// family, gfxUserFontFamily::AddFontEntry(), which AddFontFace calls,
// will automatically remove the earlier occurrence of the same userfont entry.
AddFontFace(fontfamily, ruleRec.mUserFontEntry);
mRules.AppendElement(ruleRec);
// this was a new rule and font entry, so note that the set was modified
aFontSetModified = true;
}
already_AddRefed<gfxUserFontEntry>
nsUserFontSet::FindOrCreateFontFaceFromRule(const nsAString& aFamilyName,
nsCSSFontFaceRule* aRule,
uint8_t aSheetType)
{
nsCSSValue val;
uint32_t unit;
uint32_t weight = NS_STYLE_FONT_WEIGHT_NORMAL;
int32_t stretch = NS_STYLE_FONT_STRETCH_NORMAL;
uint32_t italicStyle = NS_STYLE_FONT_STYLE_NORMAL;
uint32_t languageOverride = NO_FONT_LANGUAGE_OVERRIDE;
// set up weight
aRule->GetDesc(eCSSFontDesc_Weight, val);
unit = val.GetUnit();
if (unit == eCSSUnit_Integer || unit == eCSSUnit_Enumerated) {
weight = val.GetIntValue();
if (weight == 0) {
weight = NS_STYLE_FONT_WEIGHT_NORMAL;
}
} 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 = NS_STYLE_FONT_STYLE_NORMAL;
} else {
NS_ASSERTION(unit == eCSSUnit_Null,
"@font-face style has unexpected unit");
}
// set up font features
nsTArray<gfxFontFeature> featureSettings;
aRule->GetDesc(eCSSFontDesc_FontFeatureSettings, val);
unit = val.GetUnit();
if (unit == eCSSUnit_Normal) {
// empty list of features
} else if (unit == eCSSUnit_PairList || unit == eCSSUnit_PairListDep) {
nsRuleNode::ComputeFontFeatures(val.GetPairListValue(), 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) {
nsString stringValue;
val.GetStringValue(stringValue);
languageOverride = gfxFontStyle::ParseFontLanguageOverride(stringValue);
} 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 nullptr;
switch (unit) {
case eCSSUnit_Local_Font:
val.GetStringValue(face->mLocalName);
face->mIsLocal = true;
face->mURI = nullptr;
face->mFormatFlags = 0;
break;
case eCSSUnit_URL:
face->mIsLocal = false;
face->mURI = val.GetURLValue();
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++;
}
if (!face->mURI) {
// if URI not valid, omit from src array
srcArray.RemoveElementAt(srcArray.Length() - 1);
NS_WARNING("null url in @font-face rule");
continue;
}
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.IsEmpty()) {
return nullptr;
}
nsRefPtr<gfxUserFontEntry> entry =
FindOrCreateFontFace(aFamilyName, srcArray, weight, stretch, italicStyle,
featureSettings, languageOverride,
nullptr /* aUnicodeRanges */);
return entry.forget();
}
nsCSSFontFaceRule*
nsUserFontSet::FindRuleForEntry(gfxFontEntry* aFontEntry)
{
NS_ASSERTION(!aFontEntry->mIsUserFontContainer, "only platform font entries");
for (uint32_t i = 0; i < mRules.Length(); ++i) {
if (mRules[i].mUserFontEntry->GetPlatformFontEntry() == aFontEntry) {
return mRules[i].mContainer.mRule;
}
}
return nullptr;
}
nsCSSFontFaceRule*
nsUserFontSet::FindRuleForUserFontEntry(gfxUserFontEntry* aUserFontEntry)
{
for (uint32_t i = 0; i < mRules.Length(); ++i) {
if (mRules[i].mUserFontEntry == aUserFontEntry) {
return mRules[i].mContainer.mRule;
}
}
return nullptr;
}
nsresult
nsUserFontSet::LogMessage(gfxUserFontEntry* aUserFontEntry,
const char* aMessage,
uint32_t aFlags,
nsresult aStatus)
{
nsCOMPtr<nsIConsoleService>
console(do_GetService(NS_CONSOLESERVICE_CONTRACTID));
if (!console) {
return NS_ERROR_NOT_AVAILABLE;
}
NS_ConvertUTF16toUTF8 familyName(aUserFontEntry->mFamilyName);
nsAutoCString fontURI;
if (aUserFontEntry->mSrcIndex == aUserFontEntry->mSrcList.Length()) {
fontURI.AppendLiteral("(end of source list)");
} else {
if (aUserFontEntry->mSrcList[aUserFontEntry->mSrcIndex].mURI) {
aUserFontEntry->mSrcList[aUserFontEntry->mSrcIndex].mURI->GetSpec(fontURI);
} else {
fontURI.AppendLiteral("(invalid URI)");
}
}
char weightKeywordBuf[8]; // plenty to sprintf() a uint16_t
const char* weightKeyword;
const nsAFlatCString& weightKeywordString =
nsCSSProps::ValueToKeyword(aUserFontEntry->Weight(),
nsCSSProps::kFontWeightKTable);
if (weightKeywordString.Length() > 0) {
weightKeyword = weightKeywordString.get();
} else {
sprintf(weightKeywordBuf, "%u", aUserFontEntry->Weight());
weightKeyword = weightKeywordBuf;
}
nsPrintfCString message
("downloadable font: %s "
"(font-family: \"%s\" style:%s weight:%s stretch:%s src index:%d)",
aMessage,
familyName.get(),
aUserFontEntry->IsItalic() ? "italic" : "normal",
weightKeyword,
nsCSSProps::ValueToKeyword(aUserFontEntry->Stretch(),
nsCSSProps::kFontStretchKTable).get(),
aUserFontEntry->mSrcIndex);
if (NS_FAILED(aStatus)) {
message.AppendLiteral(": ");
switch (aStatus) {
case NS_ERROR_DOM_BAD_URI:
message.AppendLiteral("bad URI or cross-site access not allowed");
break;
case NS_ERROR_CONTENT_BLOCKED:
message.AppendLiteral("content blocked");
break;
default:
message.AppendLiteral("status=");
message.AppendInt(static_cast<uint32_t>(aStatus));
break;
}
}
message.AppendLiteral("\nsource: ");
message.Append(fontURI);
#ifdef PR_LOGGING
if (PR_LOG_TEST(GetUserFontsLog(), PR_LOG_DEBUG)) {
PR_LOG(GetUserFontsLog(), PR_LOG_DEBUG,
("userfonts (%p) %s", this, message.get()));
}
#endif
// try to give the user an indication of where the rule came from
nsCSSFontFaceRule* rule = FindRuleForUserFontEntry(aUserFontEntry);
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);
// if the style sheet is removed while the font is loading can be null
if (sheet) {
rv = sheet->GetHref(href);
NS_ENSURE_SUCCESS(rv, rv);
} else {
NS_WARNING("null parent stylesheet for @font-face rule");
href.AssignLiteral("unknown");
}
}
nsCOMPtr<nsIScriptError> scriptError =
do_CreateInstance(NS_SCRIPTERROR_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
uint64_t innerWindowID = GetPresContext()->Document()->InnerWindowID();
rv = scriptError->InitWithWindowID(NS_ConvertUTF8toUTF16(message),
href, // file
text, // 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;
}
nsresult
nsUserFontSet::CheckFontLoad(const gfxFontFaceSrc* aFontFaceSrc,
nsIPrincipal** aPrincipal,
bool* aBypassCache)
{
// 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
*aPrincipal = ps->GetDocument()->NodePrincipal();
NS_ASSERTION(aFontFaceSrc->mOriginPrincipal,
"null origin principal in @font-face rule");
if (aFontFaceSrc->mUseOriginPrincipal) {
*aPrincipal = aFontFaceSrc->mOriginPrincipal;
}
nsresult rv = nsFontFaceLoader::CheckLoadAllowed(*aPrincipal,
aFontFaceSrc->mURI,
ps->GetDocument());
if (NS_FAILED(rv)) {
return rv;
}
*aBypassCache = false;
nsCOMPtr<nsIDocShell> docShell = ps->GetDocument()->GetDocShell();
if (docShell) {
uint32_t loadType;
if (NS_SUCCEEDED(docShell->GetLoadType(&loadType))) {
if ((loadType >> 16) & nsIWebNavigation::LOAD_FLAGS_BYPASS_CACHE) {
*aBypassCache = true;
}
}
}
return rv;
}
nsresult
nsUserFontSet::SyncLoadFontData(gfxUserFontEntry* aFontToLoad,
const gfxFontFaceSrc* aFontFaceSrc,
uint8_t*& aBuffer,
uint32_t& aBufferLength)
{
nsresult rv;
nsCOMPtr<nsIChannel> channel;
// get Content Security Policy from principal to pass into channel
nsCOMPtr<nsIChannelPolicy> channelPolicy;
nsCOMPtr<nsIContentSecurityPolicy> csp;
rv = aFontToLoad->mPrincipal->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);
}
nsIPresShell* ps = mPresContext->PresShell();
if (!ps) {
return NS_ERROR_FAILURE;
}
// Note we are calling NS_NewChannelInternal() with both a node and a
// principal. This is because the document where the font is being loaded
// might have a different origin from the principal of the stylesheet
// that initiated the font load.
rv = NS_NewChannelInternal(getter_AddRefs(channel),
aFontFaceSrc->mURI,
ps->GetDocument(),
aFontToLoad->mPrincipal,
nsILoadInfo::SEC_NORMAL,
nsIContentPolicy::TYPE_FONT,
channelPolicy);
NS_ENSURE_SUCCESS(rv, rv);
// blocking stream is OK for data URIs
nsCOMPtr<nsIInputStream> stream;
rv = channel->Open(getter_AddRefs(stream));
NS_ENSURE_SUCCESS(rv, rv);
uint64_t bufferLength64;
rv = stream->Available(&bufferLength64);
NS_ENSURE_SUCCESS(rv, rv);
if (bufferLength64 == 0) {
return NS_ERROR_FAILURE;
}
if (bufferLength64 > UINT32_MAX) {
return NS_ERROR_FILE_TOO_BIG;
}
aBufferLength = static_cast<uint32_t>(bufferLength64);
// read all the decoded data
aBuffer = static_cast<uint8_t*> (NS_Alloc(sizeof(uint8_t) * aBufferLength));
if (!aBuffer) {
aBufferLength = 0;
return NS_ERROR_OUT_OF_MEMORY;
}
uint32_t numRead, totalRead = 0;
while (NS_SUCCEEDED(rv =
stream->Read(reinterpret_cast<char*>(aBuffer + totalRead),
aBufferLength - totalRead, &numRead)) &&
numRead != 0)
{
totalRead += numRead;
if (totalRead > aBufferLength) {
rv = NS_ERROR_FAILURE;
break;
}
}
// make sure there's a mime type
if (NS_SUCCEEDED(rv)) {
nsAutoCString mimeType;
rv = channel->GetContentType(mimeType);
aBufferLength = totalRead;
}
if (NS_FAILED(rv)) {
NS_Free(aBuffer);
aBuffer = nullptr;
aBufferLength = 0;
return rv;
}
return NS_OK;
}
bool
nsUserFontSet::GetPrivateBrowsing()
{
nsIPresShell* ps = mPresContext->PresShell();
if (!ps) {
return false;
}
nsCOMPtr<nsILoadContext> loadContext = ps->GetDocument()->GetLoadContext();
return loadContext && loadContext->UsePrivateBrowsing();
}
void
nsUserFontSet::DoRebuildUserFontSet()
{
if (!mPresContext) {
// AFAICS, this can only happen if someone has already called Destroy() on
// this font-set, which means it is in the process of being torn down --
// so there's no point trying to update its rules.
return;
}
mPresContext->RebuildUserFontSet();
}

88
layout/style/nsFontFaceLoader.h
View File

@ -21,99 +21,19 @@
class nsPresContext;
class nsIPrincipal;
class nsFontFaceLoader;
// nsUserFontSet - defines the loading mechanism for downloadable fonts
class nsUserFontSet : public gfxUserFontSet
{
public:
explicit nsUserFontSet(nsPresContext* aContext);
// Called when this font set is no longer associated with a presentation.
void Destroy();
// starts loading process, creating and initializing a nsFontFaceLoader obj
// returns whether load process successfully started or not
nsresult StartLoad(gfxUserFontEntry* aFontToLoad,
const gfxFontFaceSrc* aFontFaceSrc) MOZ_OVERRIDE;
// Called by nsFontFaceLoader when the loader has completed normally.
// It's removed from the mLoaders set.
void RemoveLoader(nsFontFaceLoader* aLoader);
bool UpdateRules(const nsTArray<nsFontFaceRuleContainer>& aRules);
nsPresContext* GetPresContext() { return mPresContext; }
// search for @font-face rule that matches a platform font entry
nsCSSFontFaceRule* FindRuleForEntry(gfxFontEntry* aFontEntry);
protected:
// Protected destructor, to discourage deletion outside of Release()
// (since we inherit from refcounted class gfxUserFontSet):
~nsUserFontSet();
// The font-set keeps track of the collection of rules, and their
// corresponding font entries (whether proxies or real entries),
// so that we can update the set without having to throw away
// all the existing fonts.
struct FontFaceRuleRecord {
nsRefPtr<gfxUserFontEntry> mUserFontEntry;
nsFontFaceRuleContainer mContainer;
};
void InsertRule(nsCSSFontFaceRule* aRule, uint8_t aSheetType,
nsTArray<FontFaceRuleRecord>& oldRules,
bool& aFontSetModified);
already_AddRefed<gfxUserFontEntry> FindOrCreateFontFaceFromRule(
const nsAString& aFamilyName,
nsCSSFontFaceRule* aRule,
uint8_t aSheetType);
virtual nsresult LogMessage(gfxUserFontEntry* aUserFontEntry,
const char* aMessage,
uint32_t aFlags = nsIScriptError::errorFlag,
nsresult aStatus = NS_OK) MOZ_OVERRIDE;
virtual nsresult CheckFontLoad(const gfxFontFaceSrc* aFontFaceSrc,
nsIPrincipal** aPrincipal,
bool* aBypassCache) MOZ_OVERRIDE;
virtual nsresult SyncLoadFontData(gfxUserFontEntry* aFontToLoad,
const gfxFontFaceSrc* aFontFaceSrc,
uint8_t*& aBuffer,
uint32_t& aBufferLength) MOZ_OVERRIDE;
virtual bool GetPrivateBrowsing() MOZ_OVERRIDE;
virtual void DoRebuildUserFontSet() MOZ_OVERRIDE;
// search for @font-face rule that matches a userfont font entry
nsCSSFontFaceRule* FindRuleForUserFontEntry(gfxUserFontEntry* aUserFontEntry);
nsPresContext* mPresContext; // weak reference
// Set of all loaders pointing to us. These are not strong pointers,
// but that's OK because nsFontFaceLoader always calls RemoveLoader on
// us before it dies (unless we die first).
nsTHashtable< nsPtrHashKey<nsFontFaceLoader> > mLoaders;
nsTArray<FontFaceRuleRecord> mRules;
};
class nsFontFaceLoader : public nsIStreamLoaderObserver
{
public:
nsFontFaceLoader(gfxUserFontEntry* aFontToLoad, nsIURI* aFontURI,
nsUserFontSet* aFontSet, nsIChannel* aChannel);
mozilla::dom::FontFaceSet* aFontFaceSet,
nsIChannel* aChannel);
NS_DECL_ISUPPORTS
NS_DECL_NSISTREAMLOADEROBSERVER
// initiate the load
nsresult Init();
// cancel the load and remove its reference to mFontSet
// cancel the load and remove its reference to mFontFaceSet
void Cancel();
void DropChannel() { mChannel = nullptr; }
@ -132,7 +52,7 @@ protected:
private:
nsRefPtr<gfxUserFontEntry> mUserFontEntry;
nsCOMPtr<nsIURI> mFontURI;
nsRefPtr<nsUserFontSet> mFontSet;
nsRefPtr<mozilla::dom::FontFaceSet> mFontFaceSet;
nsCOMPtr<nsIChannel> mChannel;
nsCOMPtr<nsITimer> mLoadTimer;