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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#include "mozilla/dom/FontFace.h"
#include <algorithm>
#include "gfxFontUtils.h"
#include "mozilla/dom/CSSFontFaceRule.h"
#include "mozilla/dom/FontFaceBinding.h"
#include "mozilla/dom/FontFaceImpl.h"
#include "mozilla/dom/FontFaceSet.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/dom/TypedArray.h"
#include "mozilla/dom/UnionTypes.h"
#include "mozilla/CycleCollectedJSContext.h"
#include "mozilla/ServoBindings.h"
#include "mozilla/ServoCSSParser.h"
#include "mozilla/ServoStyleSet.h"
#include "mozilla/ServoUtils.h"
#include "mozilla/StaticPrefs_layout.h"
#include "nsStyleUtil.h"
namespace mozilla {
namespace dom {
// -- Utility functions ------------------------------------------------------
template <typename T>
static void GetDataFrom(const T& aObject, uint8_t*& aBuffer,
uint32_t& aLength) {
MOZ_ASSERT(!aBuffer);
// We need to use malloc here because the gfxUserFontEntry will be calling
// free on it, so the Vector's default AllocPolicy (MallocAllocPolicy) is
// fine.
Maybe<Vector<uint8_t>> buffer =
aObject.template CreateFromData<Vector<uint8_t>>();
if (buffer.isNothing()) {
return;
}
aLength = buffer->length();
aBuffer = buffer->extractOrCopyRawBuffer();
}
// -- FontFace ---------------------------------------------------------------
NS_IMPL_CYCLE_COLLECTION_CLASS(FontFace)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(FontFace)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mParent)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mLoaded)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(FontFace)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mParent)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mLoaded)
tmp->Destroy();
NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(FontFace)
NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
NS_IMPL_CYCLE_COLLECTION_TRACE_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(FontFace)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(FontFace)
NS_IMPL_CYCLE_COLLECTING_RELEASE(FontFace)
FontFace::FontFace(nsIGlobalObject* aParent)
: mParent(aParent), mLoadedRejection(NS_OK) {}
FontFace::~FontFace() {
// Assert that we don't drop any FontFace objects during a Servo traversal,
// since PostTraversalTask objects can hold raw pointers to FontFaces.
MOZ_ASSERT(!gfxFontUtils::IsInServoTraversal());
Destroy();
}
void FontFace::Destroy() { mImpl->Destroy(); }
JSObject* FontFace::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return FontFace_Binding::Wrap(aCx, this, aGivenProto);
}
already_AddRefed<FontFace> FontFace::CreateForRule(
nsIGlobalObject* aGlobal, FontFaceSet* aFontFaceSet,
StyleLockedFontFaceRule* aRule) {
FontFaceSetImpl* setImpl = aFontFaceSet->GetImpl();
MOZ_ASSERT(setImpl);
RefPtr<FontFace> obj = new FontFace(aGlobal);
obj->mImpl = FontFaceImpl::CreateForRule(obj, setImpl, aRule);
return obj.forget();
}
already_AddRefed<FontFace> FontFace::Constructor(
const GlobalObject& aGlobal, const nsACString& aFamily,
const UTF8StringOrArrayBufferOrArrayBufferView& aSource,
const FontFaceDescriptors& aDescriptors, ErrorResult& aRv) {
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
FontFaceSet* set = global->GetFonts();
if (NS_WARN_IF(!set)) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
FontFaceSetImpl* setImpl = set->GetImpl();
if (NS_WARN_IF(!setImpl)) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
RefPtr<FontFace> obj = new FontFace(global);
obj->mImpl = new FontFaceImpl(obj, setImpl);
if (!obj->mImpl->SetDescriptors(aFamily, aDescriptors)) {
return obj.forget();
}
if (aSource.IsUTF8String()) {
obj->mImpl->InitializeSourceURL(aSource.GetAsUTF8String());
} else {
uint8_t* buffer = nullptr;
uint32_t length = 0;
if (aSource.IsArrayBuffer()) {
GetDataFrom(aSource.GetAsArrayBuffer(), buffer, length);
} else if (aSource.IsArrayBufferView()) {
GetDataFrom(aSource.GetAsArrayBufferView(), buffer, length);
} else {
MOZ_ASSERT_UNREACHABLE("Unhandled source type!");
return nullptr;
}
obj->mImpl->InitializeSourceBuffer(buffer, length);
}
return obj.forget();
}
void FontFace::GetFamily(nsACString& aResult) { mImpl->GetFamily(aResult); }
void FontFace::SetFamily(const nsACString& aValue, ErrorResult& aRv) {
mImpl->SetFamily(aValue, aRv);
}
void FontFace::GetStyle(nsACString& aResult) { mImpl->GetStyle(aResult); }
void FontFace::SetStyle(const nsACString& aValue, ErrorResult& aRv) {
mImpl->SetStyle(aValue, aRv);
}
void FontFace::GetWeight(nsACString& aResult) { mImpl->GetWeight(aResult); }
void FontFace::SetWeight(const nsACString& aValue, ErrorResult& aRv) {
mImpl->SetWeight(aValue, aRv);
}
void FontFace::GetStretch(nsACString& aResult) { mImpl->GetStretch(aResult); }
void FontFace::SetStretch(const nsACString& aValue, ErrorResult& aRv) {
mImpl->SetStretch(aValue, aRv);
}
void FontFace::GetUnicodeRange(nsACString& aResult) {
mImpl->GetUnicodeRange(aResult);
}
void FontFace::SetUnicodeRange(const nsACString& aValue, ErrorResult& aRv) {
mImpl->SetUnicodeRange(aValue, aRv);
}
void FontFace::GetVariant(nsACString& aResult) { mImpl->GetVariant(aResult); }
void FontFace::SetVariant(const nsACString& aValue, ErrorResult& aRv) {
mImpl->SetVariant(aValue, aRv);
}
void FontFace::GetFeatureSettings(nsACString& aResult) {
mImpl->GetFeatureSettings(aResult);
}
void FontFace::SetFeatureSettings(const nsACString& aValue, ErrorResult& aRv) {
mImpl->SetFeatureSettings(aValue, aRv);
}
void FontFace::GetVariationSettings(nsACString& aResult) {
mImpl->GetVariationSettings(aResult);
}
void FontFace::SetVariationSettings(const nsACString& aValue,
ErrorResult& aRv) {
mImpl->SetVariationSettings(aValue, aRv);
}
void FontFace::GetDisplay(nsACString& aResult) { mImpl->GetDisplay(aResult); }
void FontFace::SetDisplay(const nsACString& aValue, ErrorResult& aRv) {
mImpl->SetDisplay(aValue, aRv);
}
void FontFace::GetAscentOverride(nsACString& aResult) {
mImpl->GetAscentOverride(aResult);
}
void FontFace::SetAscentOverride(const nsACString& aValue, ErrorResult& aRv) {
mImpl->SetAscentOverride(aValue, aRv);
}
void FontFace::GetDescentOverride(nsACString& aResult) {
mImpl->GetDescentOverride(aResult);
}
void FontFace::SetDescentOverride(const nsACString& aValue, ErrorResult& aRv) {
mImpl->SetDescentOverride(aValue, aRv);
}
void FontFace::GetLineGapOverride(nsACString& aResult) {
mImpl->GetLineGapOverride(aResult);
}
void FontFace::SetLineGapOverride(const nsACString& aValue, ErrorResult& aRv) {
mImpl->SetLineGapOverride(aValue, aRv);
}
void FontFace::GetSizeAdjust(nsACString& aResult) {
mImpl->GetSizeAdjust(aResult);
}
void FontFace::SetSizeAdjust(const nsACString& aValue, ErrorResult& aRv) {
mImpl->SetSizeAdjust(aValue, aRv);
}
FontFaceLoadStatus FontFace::Status() { return mImpl->Status(); }
Promise* FontFace::Load(ErrorResult& aRv) {
EnsurePromise();
if (!mLoaded) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
mImpl->Load(aRv);
return mLoaded;
}
Promise* FontFace::GetLoaded(ErrorResult& aRv) {
EnsurePromise();
if (!mLoaded) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
return mLoaded;
}
void FontFace::MaybeResolve() {
gfxFontUtils::AssertSafeThreadOrServoFontMetricsLocked();
if (!mLoaded) {
return;
}
if (ServoStyleSet* ss = gfxFontUtils::CurrentServoStyleSet()) {
// See comments in Gecko_GetFontMetrics.
ss->AppendTask(PostTraversalTask::ResolveFontFaceLoadedPromise(this));
return;
}
mLoaded->MaybeResolve(this);
}
void FontFace::MaybeReject(nsresult aResult) {
gfxFontUtils::AssertSafeThreadOrServoFontMetricsLocked();
if (ServoStyleSet* ss = gfxFontUtils::CurrentServoStyleSet()) {
// See comments in Gecko_GetFontMetrics.
ss->AppendTask(
PostTraversalTask::RejectFontFaceLoadedPromise(this, aResult));
return;
}
if (mLoaded) {
mLoaded->MaybeReject(aResult);
} else if (mLoadedRejection == NS_OK) {
mLoadedRejection = aResult;
}
}
void FontFace::EnsurePromise() {
if (mLoaded || !mImpl || !mParent) {
return;
}
ErrorResult rv;
mLoaded = Promise::Create(mParent, rv);
if (mImpl->Status() == FontFaceLoadStatus::Loaded) {
mLoaded->MaybeResolve(this);
} else if (mLoadedRejection != NS_OK) {
mLoaded->MaybeReject(mLoadedRejection);
}
}
} // namespace dom
} // namespace mozilla