Adding upstream version 124.0.1.upstream/124.0.1

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

1 files changed, 281 insertions, 0 deletions

diff --git a/layout/inspector/InspectorFontFace.cpp b/layout/inspector/InspectorFontFace.cpp
new file mode 100644
index 0000000000..59a336fd1b
--- /dev/null
+++ b/layout/inspector/InspectorFontFace.cpp
@@ -0,0 +1,281 @@
+/* -*- 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 "InspectorFontFace.h"
+
+#include "gfxPlatformFontList.h"
+#include "gfxTextRun.h"
+#include "gfxUserFontSet.h"
+#include "nsFontFaceLoader.h"
+#include "mozilla/gfx/2D.h"
+#include "brotli/decode.h"
+#include "zlib.h"
+#include "mozilla/dom/CSSFontFaceRule.h"
+#include "mozilla/dom/FontFaceSet.h"
+#include "mozilla/ServoBindings.h"
+#include "mozilla/Unused.h"
+
+namespace mozilla {
+namespace dom {
+
+InspectorFontFace::InspectorFontFace(gfxFontEntry* aFontEntry,
+                                     gfxFontGroup* aFontGroup,
+                                     FontMatchType aMatchType)
+    : mFontEntry(aFontEntry), mFontGroup(aFontGroup), mMatchType(aMatchType) {
+  MOZ_COUNT_CTOR(InspectorFontFace);
+}
+
+InspectorFontFace::~InspectorFontFace() { MOZ_COUNT_DTOR(InspectorFontFace); }
+
+bool InspectorFontFace::FromFontGroup() {
+  return bool(mMatchType.kind & FontMatchType::Kind::kFontGroup);
+}
+
+bool InspectorFontFace::FromLanguagePrefs() {
+  return bool(mMatchType.kind & FontMatchType::Kind::kPrefsFallback);
+}
+
+bool InspectorFontFace::FromSystemFallback() {
+  return bool(mMatchType.kind & FontMatchType::Kind::kSystemFallback);
+}
+
+void InspectorFontFace::GetName(nsAString& aName) {
+  if (mFontEntry->IsUserFont() && !mFontEntry->IsLocalUserFont()) {
+    NS_ASSERTION(mFontEntry->mUserFontData, "missing userFontData");
+    aName.Append(NS_ConvertUTF8toUTF16(mFontEntry->mUserFontData->mRealName));
+  } else {
+    aName.Append(NS_ConvertUTF8toUTF16(mFontEntry->RealFaceName()));
+  }
+}
+
+void InspectorFontFace::GetCSSFamilyName(nsAString& aCSSFamilyName) {
+  aCSSFamilyName.Append(NS_ConvertUTF8toUTF16(mFontEntry->FamilyName()));
+}
+
+void InspectorFontFace::GetCSSGeneric(nsAString& aName) {
+  if (mMatchType.generic != StyleGenericFontFamily::None) {
+    aName.AssignASCII(gfxPlatformFontList::GetGenericName(mMatchType.generic));
+  } else {
+    aName.Truncate(0);
+  }
+}
+
+CSSFontFaceRule* InspectorFontFace::GetRule() {
+  if (!mRule) {
+    // check whether this font entry is associated with an @font-face rule
+    // in the relevant font group's user font set
+    StyleLockedFontFaceRule* rule = nullptr;
+    if (mFontEntry->IsUserFont()) {
+      auto* fontFaceSet =
+          static_cast<FontFaceSetImpl*>(mFontGroup->GetUserFontSet());
+      if (fontFaceSet) {
+        rule = fontFaceSet->FindRuleForEntry(mFontEntry);
+      }
+    }
+    if (rule) {
+      // XXX It would be better if we can share this with CSSOM tree,
+      // but that may require us to create another map, which is not
+      // great either. As far as they would use the same backend, and
+      // we don't really support mutating @font-face rule via CSSOM,
+      // it's probably fine for now.
+      uint32_t line, column;
+      Servo_FontFaceRule_GetSourceLocation(rule, &line, &column);
+      mRule =
+          new CSSFontFaceRule(do_AddRef(rule), nullptr, nullptr, line, column);
+    }
+  }
+  return mRule;
+}
+
+int32_t InspectorFontFace::SrcIndex() {
+  if (mFontEntry->IsUserFont()) {
+    NS_ASSERTION(mFontEntry->mUserFontData, "missing userFontData");
+    return mFontEntry->mUserFontData->mSrcIndex;
+  }
+
+  return -1;
+}
+
+void InspectorFontFace::GetURI(nsAString& aURI) {
+  aURI.Truncate();
+  if (mFontEntry->IsUserFont() && !mFontEntry->IsLocalUserFont()) {
+    NS_ASSERTION(mFontEntry->mUserFontData, "missing userFontData");
+    if (mFontEntry->mUserFontData->mURI) {
+      nsAutoCString spec;
+      mFontEntry->mUserFontData->mURI->GetSpec(spec);
+      AppendUTF8toUTF16(spec, aURI);
+    }
+  }
+}
+
+void InspectorFontFace::GetLocalName(nsAString& aLocalName) {
+  aLocalName.Truncate();
+  if (mFontEntry->IsLocalUserFont()) {
+    NS_ASSERTION(mFontEntry->mUserFontData, "missing userFontData");
+    aLocalName.Append(
+        NS_ConvertUTF8toUTF16(mFontEntry->mUserFontData->mLocalName));
+  }
+}
+
+void InspectorFontFace::GetFormat(nsAString& aFormat) {
+  aFormat.Truncate();
+  if (mFontEntry->IsUserFont() && !mFontEntry->IsLocalUserFont()) {
+    NS_ASSERTION(mFontEntry->mUserFontData, "missing userFontData");
+    switch (mFontEntry->mUserFontData->mFormatHint) {
+      case StyleFontFaceSourceFormatKeyword::None:
+        break;
+      case StyleFontFaceSourceFormatKeyword::Collection:
+        aFormat.AssignLiteral("collection");
+        break;
+      case StyleFontFaceSourceFormatKeyword::Opentype:
+        aFormat.AssignLiteral("opentype");
+        break;
+      case StyleFontFaceSourceFormatKeyword::Truetype:
+        aFormat.AssignLiteral("truetype");
+        break;
+      case StyleFontFaceSourceFormatKeyword::EmbeddedOpentype:
+        aFormat.AssignLiteral("embedded-opentype");
+        break;
+      case StyleFontFaceSourceFormatKeyword::Svg:
+        aFormat.AssignLiteral("svg");
+        break;
+      case StyleFontFaceSourceFormatKeyword::Woff:
+        aFormat.AssignLiteral("woff");
+        break;
+      case StyleFontFaceSourceFormatKeyword::Woff2:
+        aFormat.AssignLiteral("woff2");
+        break;
+      case StyleFontFaceSourceFormatKeyword::Unknown:
+        aFormat.AssignLiteral("unknown!");
+        break;
+    }
+  }
+}
+
+void InspectorFontFace::GetMetadata(nsAString& aMetadata) {
+  aMetadata.Truncate();
+  if (mFontEntry->IsUserFont() && !mFontEntry->IsLocalUserFont()) {
+    NS_ASSERTION(mFontEntry->mUserFontData, "missing userFontData");
+    const gfxUserFontData* userFontData = mFontEntry->mUserFontData.get();
+    if (userFontData->mMetadata.Length() && userFontData->mMetaOrigLen) {
+      nsAutoCString str;
+      str.SetLength(userFontData->mMetaOrigLen);
+      if (str.Length() == userFontData->mMetaOrigLen) {
+        switch (userFontData->mCompression) {
+          case gfxUserFontData::kZlibCompression: {
+            uLongf destLen = userFontData->mMetaOrigLen;
+            if (uncompress((Bytef*)(str.BeginWriting()), &destLen,
+                           (const Bytef*)(userFontData->mMetadata.Elements()),
+                           userFontData->mMetadata.Length()) == Z_OK &&
+                destLen == userFontData->mMetaOrigLen) {
+              AppendUTF8toUTF16(str, aMetadata);
+            }
+          } break;
+          case gfxUserFontData::kBrotliCompression: {
+            size_t decodedSize = userFontData->mMetaOrigLen;
+            if (BrotliDecoderDecompress(userFontData->mMetadata.Length(),
+                                        userFontData->mMetadata.Elements(),
+                                        &decodedSize,
+                                        (uint8_t*)str.BeginWriting()) == 1 &&
+                decodedSize == userFontData->mMetaOrigLen) {
+              AppendUTF8toUTF16(str, aMetadata);
+            }
+          } break;
+        }
+      }
+    }
+  }
+}
+
+// Append an OpenType tag to a string as a 4-ASCII-character code.
+static void AppendTagAsASCII(nsAString& aString, uint32_t aTag) {
+  aString.AppendPrintf("%c%c%c%c", (aTag >> 24) & 0xff, (aTag >> 16) & 0xff,
+                       (aTag >> 8) & 0xff, aTag & 0xff);
+}
+
+void InspectorFontFace::GetVariationAxes(
+    nsTArray<InspectorVariationAxis>& aResult, ErrorResult& aRV) {
+  if (!mFontEntry->HasVariations()) {
+    return;
+  }
+  AutoTArray<gfxFontVariationAxis, 4> axes;
+  mFontEntry->GetVariationAxes(axes);
+  MOZ_ASSERT(!axes.IsEmpty());
+  if (!aResult.SetCapacity(axes.Length(), mozilla::fallible)) {
+    aRV.Throw(NS_ERROR_OUT_OF_MEMORY);
+    return;
+  }
+  for (auto a : axes) {
+    InspectorVariationAxis& axis = *aResult.AppendElement();
+    AppendTagAsASCII(axis.mTag, a.mTag);
+    axis.mName.Append(NS_ConvertUTF8toUTF16(a.mName));
+    axis.mMinValue = a.mMinValue;
+    axis.mMaxValue = a.mMaxValue;
+    axis.mDefaultValue = a.mDefaultValue;
+  }
+}
+
+void InspectorFontFace::GetVariationInstances(
+    nsTArray<InspectorVariationInstance>& aResult, ErrorResult& aRV) {
+  if (!mFontEntry->HasVariations()) {
+    return;
+  }
+  AutoTArray<gfxFontVariationInstance, 16> instances;
+  mFontEntry->GetVariationInstances(instances);
+  if (!aResult.SetCapacity(instances.Length(), mozilla::fallible)) {
+    aRV.Throw(NS_ERROR_OUT_OF_MEMORY);
+    return;
+  }
+  for (const auto& i : instances) {
+    InspectorVariationInstance& inst = *aResult.AppendElement();
+    inst.mName.Append(NS_ConvertUTF8toUTF16(i.mName));
+    // inst.mValues is a webidl sequence<>, which is a fallible array,
+    // so we are required to use fallible SetCapacity and AppendElement calls,
+    // and check the result. In practice we don't expect failure here; the
+    // list of values cannot get huge because of limits in the font format.
+    if (!inst.mValues.SetCapacity(i.mValues.Length(), mozilla::fallible)) {
+      aRV.Throw(NS_ERROR_OUT_OF_MEMORY);
+      return;
+    }
+    for (const auto& v : i.mValues) {
+      InspectorVariationValue value;
+      AppendTagAsASCII(value.mAxis, v.mAxis);
+      value.mValue = v.mValue;
+      // This won't fail, because of SetCapacity above.
+      Unused << inst.mValues.AppendElement(value, mozilla::fallible);
+    }
+  }
+}
+
+void InspectorFontFace::GetFeatures(nsTArray<InspectorFontFeature>& aResult,
+                                    ErrorResult& aRV) {
+  AutoTArray<gfxFontFeatureInfo, 64> features;
+  mFontEntry->GetFeatureInfo(features);
+  if (features.IsEmpty()) {
+    return;
+  }
+  if (!aResult.SetCapacity(features.Length(), mozilla::fallible)) {
+    aRV.Throw(NS_ERROR_OUT_OF_MEMORY);
+    return;
+  }
+  for (auto& f : features) {
+    InspectorFontFeature& feat = *aResult.AppendElement();
+    AppendTagAsASCII(feat.mTag, f.mTag);
+    AppendTagAsASCII(feat.mScript, f.mScript);
+    AppendTagAsASCII(feat.mLanguageSystem, f.mLangSys);
+  }
+}
+
+void InspectorFontFace::GetRanges(nsTArray<RefPtr<nsRange>>& aResult) {
+  aResult = mRanges.Clone();
+}
+
+void InspectorFontFace::AddRange(nsRange* aRange) {
+  mRanges.AppendElement(aRange);
+}
+
+}  // namespace dom
+}  // namespace mozilla