Adding upstream version 115.8.0esr.upstream/115.8.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 319 insertions, 0 deletions

diff --git a/layout/style/FontFace.cpp b/layout/style/FontFace.cpp
new file mode 100644
index 0000000000..61ce5b9c38
--- /dev/null
+++ b/layout/style/FontFace.cpp
@@ -0,0 +1,319 @@
+/* -*- 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
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#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);
+  aObject.ComputeState();
+  // We use malloc here rather than a FallibleTArray or fallible
+  // operator new[] since the gfxUserFontEntry will be calling free
+  // on it.
+  aBuffer = (uint8_t*)malloc(aObject.Length());
+  if (!aBuffer) {
+    return;
+  }
+  memcpy((void*)aBuffer, aObject.Data(), aObject.Length());
+  aLength = aObject.Length();
+}
+
+// -- 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;
+  }
+
+  // If the pref is not set, don't create the Promise (which the page wouldn't
+  // be able to get to anyway) as it causes the window.FontFace constructor
+  // to be created.
+  if (FontFaceSet::IsEnabled()) {
+    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