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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /layout/style/FontFace.h
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/. */
+
+#ifndef mozilla_dom_FontFace_h
+#define mozilla_dom_FontFace_h
+
+#include "mozilla/dom/FontFaceBinding.h"
+#include "gfxUserFontSet.h"
+#include "nsAutoPtr.h"
+#include "nsCSSPropertyID.h"
+#include "nsCSSValue.h"
+#include "nsWrapperCache.h"
+
+class gfxFontFaceBufferSource;
+class nsCSSFontFaceRule;
+
+namespace mozilla {
+struct CSSFontFaceDescriptors;
+namespace dom {
+class FontFaceBufferSource;
+struct FontFaceDescriptors;
+class FontFaceSet;
+class Promise;
+class StringOrArrayBufferOrArrayBufferView;
+} // namespace dom
+} // namespace mozilla
+
+namespace mozilla {
+namespace dom {
+
+class FontFace final : public nsISupports,
+ public nsWrapperCache
+{
+ friend class mozilla::dom::FontFaceBufferSource;
+ friend class Entry;
+
+public:
+ class Entry final : public gfxUserFontEntry {
+ friend class FontFace;
+
+ public:
+ Entry(gfxUserFontSet* aFontSet,
+ const nsTArray<gfxFontFaceSrc>& aFontFaceSrcList,
+ uint32_t aWeight,
+ int32_t aStretch,
+ uint8_t aStyle,
+ const nsTArray<gfxFontFeature>& aFeatureSettings,
+ uint32_t aLanguageOverride,
+ gfxSparseBitSet* aUnicodeRanges,
+ uint8_t aFontDisplay)
+ : gfxUserFontEntry(aFontSet, aFontFaceSrcList, aWeight, aStretch,
+ aStyle, aFeatureSettings, aLanguageOverride,
+ aUnicodeRanges, aFontDisplay) {}
+
+ virtual void SetLoadState(UserFontLoadState aLoadState) override;
+ virtual void GetUserFontSets(nsTArray<gfxUserFontSet*>& aResult) override;
+ const AutoTArray<FontFace*,1>& GetFontFaces() { return mFontFaces; }
+
+ protected:
+ // The FontFace objects that use this user font entry. We need to store
+ // an array of these, not just a single pointer, since the user font
+ // cache can return the same entry for different FontFaces that have
+ // the same descriptor values and come from the same origin.
+ AutoTArray<FontFace*,1> mFontFaces;
+ };
+
+ NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+ NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(FontFace)
+
+ nsISupports* GetParentObject() const { return mParent; }
+ virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
+
+ static already_AddRefed<FontFace>
+ CreateForRule(nsISupports* aGlobal, FontFaceSet* aFontFaceSet,
+ nsCSSFontFaceRule* aRule);
+
+ nsCSSFontFaceRule* GetRule() { return mRule; }
+
+ void GetDesc(nsCSSFontDesc aDescID, nsCSSValue& aResult) const;
+
+ gfxUserFontEntry* CreateUserFontEntry();
+ gfxUserFontEntry* GetUserFontEntry() const { return mUserFontEntry; }
+ void SetUserFontEntry(gfxUserFontEntry* aEntry);
+
+ /**
+ * Returns whether this object is in the specified FontFaceSet.
+ */
+ bool IsInFontFaceSet(FontFaceSet* aFontFaceSet) const;
+
+ void AddFontFaceSet(FontFaceSet* aFontFaceSet);
+ void RemoveFontFaceSet(FontFaceSet* aFontFaceSet);
+
+ FontFaceSet* GetPrimaryFontFaceSet() const { return mFontFaceSet; }
+
+ /**
+ * Gets the family name of the FontFace as a raw string (such as 'Times', as
+ * opposed to GetFamily, which returns a CSS-escaped string, such as
+ * '"Times"'). Returns whether a valid family name was available.
+ */
+ bool GetFamilyName(nsString& aResult);
+
+ /**
+ * Returns whether this object is CSS-connected, i.e. reflecting an
+ * @font-face rule.
+ */
+ bool HasRule() const { return mRule; }
+
+ /**
+ * Breaks the connection between this FontFace and its @font-face rule.
+ */
+ void DisconnectFromRule();
+
+ /**
+ * Returns whether there is an ArrayBuffer or ArrayBufferView of font
+ * data.
+ */
+ bool HasFontData() const;
+
+ /**
+ * Creates a gfxFontFaceBufferSource to represent the font data
+ * in this object.
+ */
+ already_AddRefed<gfxFontFaceBufferSource> CreateBufferSource();
+
+ /**
+ * Gets a pointer to and the length of the font data stored in the
+ * ArrayBuffer or ArrayBufferView.
+ */
+ bool GetData(uint8_t*& aBuffer, uint32_t& aLength);
+
+ // Web IDL
+ static already_AddRefed<FontFace>
+ Constructor(const GlobalObject& aGlobal,
+ const nsAString& aFamily,
+ const mozilla::dom::StringOrArrayBufferOrArrayBufferView& aSource,
+ const mozilla::dom::FontFaceDescriptors& aDescriptors,
+ ErrorResult& aRV);
+
+ void GetFamily(nsString& aResult);
+ void SetFamily(const nsAString& aValue, mozilla::ErrorResult& aRv);
+ void GetStyle(nsString& aResult);
+ void SetStyle(const nsAString& aValue, mozilla::ErrorResult& aRv);
+ void GetWeight(nsString& aResult);
+ void SetWeight(const nsAString& aValue, mozilla::ErrorResult& aRv);
+ void GetStretch(nsString& aResult);
+ void SetStretch(const nsAString& aValue, mozilla::ErrorResult& aRv);
+ void GetUnicodeRange(nsString& aResult);
+ void SetUnicodeRange(const nsAString& aValue, mozilla::ErrorResult& aRv);
+ void GetVariant(nsString& aResult);
+ void SetVariant(const nsAString& aValue, mozilla::ErrorResult& aRv);
+ void GetFeatureSettings(nsString& aResult);
+ void SetFeatureSettings(const nsAString& aValue, mozilla::ErrorResult& aRv);
+ void GetDisplay(nsString& aResult);
+ void SetDisplay(const nsAString& aValue, mozilla::ErrorResult& aRv);
+
+ mozilla::dom::FontFaceLoadStatus Status();
+ mozilla::dom::Promise* Load(mozilla::ErrorResult& aRv);
+ mozilla::dom::Promise* GetLoaded(mozilla::ErrorResult& aRv);
+
+private:
+ FontFace(nsISupports* aParent, FontFaceSet* aFontFaceSet);
+ ~FontFace();
+
+ void InitializeSource(const StringOrArrayBufferOrArrayBufferView& aSource);
+
+ // Helper function for Load.
+ void DoLoad();
+
+ /**
+ * Parses a @font-face descriptor value, storing the result in aResult.
+ * Returns whether the parsing was successful.
+ */
+ bool ParseDescriptor(nsCSSFontDesc aDescID, const nsAString& aString,
+ nsCSSValue& aResult);
+
+ // Helper function for the descriptor setter methods.
+ void SetDescriptor(nsCSSFontDesc aFontDesc,
+ const nsAString& aValue,
+ mozilla::ErrorResult& aRv);
+
+ /**
+ * Sets all of the descriptor values in mDescriptors using values passed
+ * to the JS constructor.
+ */
+ bool SetDescriptors(const nsAString& aFamily,
+ const FontFaceDescriptors& aDescriptors);
+
+ /**
+ * Sets the current loading status.
+ */
+ void SetStatus(mozilla::dom::FontFaceLoadStatus aStatus);
+
+ void GetDesc(nsCSSFontDesc aDescID,
+ nsCSSPropertyID aPropID,
+ nsString& aResult) const;
+
+ /**
+ * Returns and takes ownership of the buffer storing the font data.
+ */
+ void TakeBuffer(uint8_t*& aBuffer, uint32_t& aLength);
+
+ // Acts like mLoaded->MaybeReject(aResult), except it doesn't create mLoaded
+ // if it doesn't already exist.
+ void Reject(nsresult aResult);
+
+ // Creates mLoaded if it doesn't already exist. It may immediately resolve or
+ // reject mLoaded based on mStatus and mLoadedRejection.
+ void EnsurePromise();
+
+ nsCOMPtr<nsISupports> mParent;
+
+ // A Promise that is fulfilled once the font represented by this FontFace is
+ // loaded, and is rejected if the load fails. This promise is created lazily
+ // when JS asks for it.
+ RefPtr<mozilla::dom::Promise> mLoaded;
+
+ // Saves the rejection code for mLoaded if mLoaded hasn't been created yet.
+ nsresult mLoadedRejection;
+
+ // The @font-face rule this FontFace object is reflecting, if it is a
+ // rule backed FontFace.
+ RefPtr<nsCSSFontFaceRule> mRule;
+
+ // The FontFace object's user font entry. This is initially null, but is set
+ // during FontFaceSet::UpdateRules and when a FontFace is explicitly loaded.
+ RefPtr<Entry> mUserFontEntry;
+
+ // The current load status of the font represented by this FontFace.
+ // Note that we can't just reflect the value of the gfxUserFontEntry's
+ // status, since the spec sometimes requires us to go through the event
+ // loop before updating the status, rather than doing it immediately.
+ mozilla::dom::FontFaceLoadStatus mStatus;
+
+ // Represents where a FontFace's data is coming from.
+ enum SourceType {
+ eSourceType_FontFaceRule = 1,
+ eSourceType_URLs,
+ eSourceType_Buffer
+ };
+
+ // Where the font data for this FontFace is coming from.
+ SourceType mSourceType;
+
+ // If the FontFace was constructed with an ArrayBuffer(View), this is a
+ // copy of the data from it.
+ uint8_t* mSourceBuffer;
+ uint32_t mSourceBufferLength;
+
+ // The values corresponding to the font face descriptors, if we are not
+ // a rule backed FontFace object. For rule backed objects, we use
+ // the descriptors stored in mRule.
+ nsAutoPtr<mozilla::CSSFontFaceDescriptors> mDescriptors;
+
+ // The primary FontFaceSet this FontFace is associated with,
+ // regardless of whether it is currently "in" the set.
+ RefPtr<FontFaceSet> mFontFaceSet;
+
+ // Other FontFaceSets (apart from mFontFaceSet) that this FontFace
+ // appears in.
+ nsTArray<RefPtr<FontFaceSet>> mOtherFontFaceSets;
+
+ // Whether this FontFace appears in mFontFaceSet.
+ bool mInFontFaceSet;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // !defined(mozilla_dom_FontFace_h)