mirror of
https://github.com/classilla/tenfourfox.git
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192 lines
6.7 KiB
C++
192 lines
6.7 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GFX_FT2FONTLIST_H
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#define GFX_FT2FONTLIST_H
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#include "mozilla/MemoryReporting.h"
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#include "gfxPlatformFontList.h"
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namespace mozilla {
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namespace dom {
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class FontListEntry;
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};
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};
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using mozilla::dom::FontListEntry;
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class FontNameCache;
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typedef struct FT_FaceRec_* FT_Face;
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class nsZipArchive;
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class FT2FontEntry : public gfxFontEntry
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{
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public:
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FT2FontEntry(const nsAString& aFaceName) :
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gfxFontEntry(aFaceName),
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mFTFace(nullptr),
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mFontFace(nullptr),
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mFTFontIndex(0)
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{
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}
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~FT2FontEntry();
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const nsString& GetName() const {
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return Name();
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}
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// create a font entry for a downloaded font
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static FT2FontEntry*
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CreateFontEntry(const nsAString& aFontName,
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uint16_t aWeight,
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int16_t aStretch,
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uint8_t aStyle,
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const uint8_t* aFontData,
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uint32_t aLength);
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// create a font entry representing an installed font, identified by
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// a FontListEntry; the freetype and cairo faces will not be instantiated
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// until actually needed
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static FT2FontEntry*
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CreateFontEntry(const FontListEntry& aFLE);
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// Create a font entry for a given freetype face; if it is an installed font,
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// also record the filename and index.
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// aFontData (if non-nullptr) is NS_Malloc'ed data that aFace depends on,
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// to be freed after the face is destroyed
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static FT2FontEntry*
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CreateFontEntry(FT_Face aFace,
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const char *aFilename, uint8_t aIndex,
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const nsAString& aName,
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const uint8_t* aFontData = nullptr);
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virtual gfxFont *CreateFontInstance(const gfxFontStyle *aFontStyle,
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bool aNeedsBold);
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// Create (if necessary) and return the cairo_font_face for this font.
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// This may fail and return null, so caller must be prepared to handle this.
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cairo_font_face_t *CairoFontFace();
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// Create a cairo_scaled_font for this face, with the given style.
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// This may fail and return null, so caller must be prepared to handle this.
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cairo_scaled_font_t *CreateScaledFont(const gfxFontStyle *aStyle);
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nsresult ReadCMAP(FontInfoData *aFontInfoData = nullptr);
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virtual hb_blob_t* GetFontTable(uint32_t aTableTag) override;
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virtual nsresult CopyFontTable(uint32_t aTableTag,
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FallibleTArray<uint8_t>& aBuffer) override;
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// Check for various kinds of brokenness, and set flags on the entry
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// accordingly so that we avoid using bad font tables
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void CheckForBrokenFont(gfxFontFamily *aFamily);
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virtual void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
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FontListSizes* aSizes) const;
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virtual void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
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FontListSizes* aSizes) const;
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FT_Face mFTFace;
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cairo_font_face_t *mFontFace;
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nsCString mFilename;
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uint8_t mFTFontIndex;
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};
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class FT2FontFamily : public gfxFontFamily
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{
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public:
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// Flags to indicate whether a font should be "visible" in the global
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// font list (available for use in font-family), or "hidden" (available
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// only to support a matching data: URI used in @font-face).
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typedef enum {
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kVisible,
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kHidden
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} Visibility;
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FT2FontFamily(const nsAString& aName) :
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gfxFontFamily(aName) { }
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// Append this family's faces to the IPC fontlist
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void AddFacesToFontList(InfallibleTArray<FontListEntry>* aFontList,
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Visibility aVisibility);
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};
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class gfxFT2FontList : public gfxPlatformFontList
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{
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public:
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gfxFT2FontList();
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virtual gfxFontFamily* GetDefaultFont(const gfxFontStyle* aStyle);
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virtual gfxFontEntry* LookupLocalFont(const nsAString& aFontName,
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uint16_t aWeight,
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int16_t aStretch,
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uint8_t aStyle);
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virtual gfxFontEntry* MakePlatformFont(const nsAString& aFontName,
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uint16_t aWeight,
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int16_t aStretch,
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uint8_t aStyle,
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const uint8_t* aFontData,
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uint32_t aLength);
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void GetSystemFontList(InfallibleTArray<FontListEntry>* retValue);
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static gfxFT2FontList* PlatformFontList() {
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return static_cast<gfxFT2FontList*>(gfxPlatformFontList::PlatformFontList());
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}
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virtual void GetFontFamilyList(nsTArray<RefPtr<gfxFontFamily> >& aFamilyArray);
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protected:
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typedef enum {
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kUnknown,
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kStandard
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} StandardFile;
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virtual nsresult InitFontList();
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void AppendFaceFromFontListEntry(const FontListEntry& aFLE,
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StandardFile aStdFile);
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void AppendFacesFromFontFile(const nsCString& aFileName,
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FontNameCache *aCache,
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StandardFile aStdFile,
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FT2FontFamily::Visibility aVisibility);
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void AppendFacesFromOmnijarEntry(nsZipArchive *aReader,
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const nsCString& aEntryName,
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FontNameCache *aCache,
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bool aJarChanged);
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// the defaults here are suitable for reading bundled fonts from omnijar
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void AppendFacesFromCachedFaceList(const nsCString& aFileName,
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const nsCString& aFaceList,
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StandardFile aStdFile = kStandard,
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FT2FontFamily::Visibility aVisibility =
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FT2FontFamily::kVisible);
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void AddFaceToList(const nsCString& aEntryName, uint32_t aIndex,
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StandardFile aStdFile,
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FT2FontFamily::Visibility aVisibility,
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FT_Face aFace, nsCString& aFaceList);
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void FindFonts();
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void FindFontsInOmnijar(FontNameCache *aCache);
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void FindFontsInDir(const nsCString& aDir, FontNameCache* aFNC,
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FT2FontFamily::Visibility aVisibility);
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nsTHashtable<nsStringHashKey> mSkipSpaceLookupCheckFamilies;
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private:
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FontFamilyTable mHiddenFontFamilies;
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};
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#endif /* GFX_FT2FONTLIST_H */
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