зеркало из https://github.com/mozilla/gecko-dev.git
501 строка
16 KiB
C++
501 строка
16 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_DWRITEFONTLIST_H
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#define GFX_DWRITEFONTLIST_H
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#include "mozilla/FontPropertyTypes.h"
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#include "mozilla/MathAlgorithms.h"
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#include "mozilla/MemoryReporting.h"
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#include "gfxDWriteCommon.h"
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#include "dwrite_3.h"
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// Currently, we build with WINVER=0x601 (Win7), which means newer
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// declarations in dwrite_3.h will not be visible. Also, we don't
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// yet have the Fall Creators Update SDK available on build machines,
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// so even with updated WINVER, some of the interfaces we need would
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// not be present.
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// To work around this, until the build environment is updated,
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// we #include an extra header that contains copies of the relevant
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// classes/interfaces we need.
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#if !defined(__MINGW32__) && WINVER < 0x0A00
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#include "mozilla/gfx/dw-extra.h"
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#endif
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#include "gfxFont.h"
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#include "gfxUserFontSet.h"
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#include "cairo-win32.h"
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#include "gfxPlatformFontList.h"
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#include "gfxPlatform.h"
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#include <algorithm>
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#include "mozilla/gfx/UnscaledFontDWrite.h"
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/**
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* gfxDWriteFontFamily is a class that describes one of the fonts on the
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* users system. It holds each gfxDWriteFontEntry (maps more directly to
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* a font face) which holds font type, charset info and character map info.
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*/
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class gfxDWriteFontEntry;
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/**
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* \brief Class representing directwrite font family.
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*/
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class gfxDWriteFontFamily : public gfxFontFamily
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{
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public:
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typedef mozilla::FontStretch FontStretch;
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typedef mozilla::FontSlantStyle FontSlantStyle;
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typedef mozilla::FontWeight FontWeight;
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/**
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* Constructs a new DWriteFont Family.
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*
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* \param aName Name identifying the family
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* \param aFamily IDWriteFontFamily object representing the directwrite
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* family object.
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*/
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gfxDWriteFontFamily(const nsAString& aName,
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IDWriteFontFamily *aFamily,
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bool aIsSystemFontFamily = false)
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: gfxFontFamily(aName), mDWFamily(aFamily),
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mIsSystemFontFamily(aIsSystemFontFamily), mForceGDIClassic(false) {}
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virtual ~gfxDWriteFontFamily();
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void FindStyleVariations(FontInfoData *aFontInfoData = nullptr) final;
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void LocalizedName(nsAString& aLocalizedName) final;
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void ReadFaceNames(gfxPlatformFontList *aPlatformFontList,
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bool aNeedFullnamePostscriptNames,
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FontInfoData *aFontInfoData = nullptr) final;
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void SetForceGDIClassic(bool aForce) { mForceGDIClassic = aForce; }
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void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
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FontListSizes* aSizes) const final;
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void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
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FontListSizes* aSizes) const final;
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bool FilterForFontList(nsAtom* aLangGroup,
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const nsACString& aGeneric) const final {
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return !IsSymbolFontFamily();
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}
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protected:
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// helper for FilterForFontList
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bool IsSymbolFontFamily() const;
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/** This font family's directwrite fontfamily object */
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RefPtr<IDWriteFontFamily> mDWFamily;
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bool mIsSystemFontFamily;
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bool mForceGDIClassic;
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};
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/**
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* \brief Class representing DirectWrite FontEntry (a unique font style/family)
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*/
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class gfxDWriteFontEntry : public gfxFontEntry
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{
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public:
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/**
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* Constructs a font entry.
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*
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* \param aFaceName The name of the corresponding font face.
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* \param aFont DirectWrite font object
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*/
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gfxDWriteFontEntry(const nsAString& aFaceName,
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IDWriteFont *aFont,
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bool aIsSystemFont = false)
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: gfxFontEntry(aFaceName), mFont(aFont), mFontFile(nullptr),
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mIsSystemFont(aIsSystemFont), mForceGDIClassic(false),
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mHasVariations(false), mHasVariationsInitialized(false)
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{
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DWRITE_FONT_STYLE dwriteStyle = aFont->GetStyle();
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FontSlantStyle style =
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(dwriteStyle == DWRITE_FONT_STYLE_ITALIC
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? FontSlantStyle::Italic()
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: (dwriteStyle == DWRITE_FONT_STYLE_OBLIQUE
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? FontSlantStyle::Oblique()
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: FontSlantStyle::Normal()));
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mStyleRange = SlantStyleRange(style);
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mStretchRange =
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StretchRange(FontStretchFromDWriteStretch(aFont->GetStretch()));
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int weight = NS_ROUNDUP(aFont->GetWeight() - 50, 100);
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weight = mozilla::Clamp(weight, 100, 900);
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mWeightRange = WeightRange(FontWeight(weight));
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mIsCJK = UNINITIALIZED_VALUE;
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}
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/**
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* Constructs a font entry using a font. But with custom font values.
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* This is used for creating correct font entries for @font-face with local
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* font source.
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*
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* \param aFaceName The name of the corresponding font face.
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* \param aFont DirectWrite font object
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* \param aWeight Weight of the font
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* \param aStretch Stretch of the font
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* \param aStyle italic or oblique of font
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*/
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gfxDWriteFontEntry(const nsAString& aFaceName,
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IDWriteFont *aFont,
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WeightRange aWeight,
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StretchRange aStretch,
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SlantStyleRange aStyle)
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: gfxFontEntry(aFaceName), mFont(aFont), mFontFile(nullptr),
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mIsSystemFont(false), mForceGDIClassic(false),
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mHasVariations(false), mHasVariationsInitialized(false)
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{
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mWeightRange = aWeight;
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mStretchRange = aStretch;
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mStyleRange = aStyle;
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mIsLocalUserFont = true;
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mIsCJK = UNINITIALIZED_VALUE;
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}
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/**
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* Constructs a font entry using a font file.
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*
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* \param aFaceName The name of the corresponding font face.
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* \param aFontFile DirectWrite fontfile object
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* \param aFontFileStream DirectWrite fontfile stream object
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* \param aWeight Weight of the font
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* \param aStretch Stretch of the font
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* \param aStyle italic or oblique of font
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*/
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gfxDWriteFontEntry(const nsAString& aFaceName,
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IDWriteFontFile *aFontFile,
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IDWriteFontFileStream *aFontFileStream,
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WeightRange aWeight,
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StretchRange aStretch,
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SlantStyleRange aStyle)
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: gfxFontEntry(aFaceName), mFont(nullptr),
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mFontFile(aFontFile), mFontFileStream(aFontFileStream),
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mIsSystemFont(false), mForceGDIClassic(false),
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mHasVariations(false), mHasVariationsInitialized(false)
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{
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mWeightRange = aWeight;
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mStretchRange = aStretch;
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mStyleRange = aStyle;
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mIsDataUserFont = true;
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mIsCJK = UNINITIALIZED_VALUE;
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}
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gfxFontEntry* Clone() const override;
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virtual ~gfxDWriteFontEntry();
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virtual hb_blob_t* GetFontTable(uint32_t aTableTag) override;
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nsresult ReadCMAP(FontInfoData *aFontInfoData = nullptr);
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bool IsCJKFont();
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bool HasVariations() override;
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void GetVariationAxes(nsTArray<gfxFontVariationAxis>& aAxes) override;
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void GetVariationInstances(nsTArray<gfxFontVariationInstance>& aInstances) override;
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void SetForceGDIClassic(bool aForce) { mForceGDIClassic = aForce; }
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bool GetForceGDIClassic() { return mForceGDIClassic; }
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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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protected:
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friend class gfxDWriteFont;
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friend class gfxDWriteFontList;
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virtual nsresult CopyFontTable(uint32_t aTableTag,
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nsTArray<uint8_t>& aBuffer) override;
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virtual gfxFont *CreateFontInstance(const gfxFontStyle *aFontStyle);
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nsresult CreateFontFace(
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IDWriteFontFace **aFontFace,
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const gfxFontStyle* aFontStyle = nullptr,
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DWRITE_FONT_SIMULATIONS aSimulations = DWRITE_FONT_SIMULATIONS_NONE);
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static bool InitLogFont(IDWriteFont *aFont, LOGFONTW *aLogFont);
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/**
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* A fontentry only needs to have either of these. If it has both only
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* the IDWriteFont will be used.
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*/
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RefPtr<IDWriteFont> mFont;
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RefPtr<IDWriteFontFile> mFontFile;
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// For custom fonts, we hold a reference to the IDWriteFontFileStream for
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// for the IDWriteFontFile, so that the data is available.
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RefPtr<IDWriteFontFileStream> mFontFileStream;
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// font face corresponding to the mFont/mFontFile *without* any DWrite
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// style simulations applied
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RefPtr<IDWriteFontFace> mFontFace;
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// Extended fontface interface if supported, else null
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RefPtr<IDWriteFontFace5> mFontFace5;
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DWRITE_FONT_FACE_TYPE mFaceType;
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int8_t mIsCJK;
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bool mIsSystemFont;
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bool mForceGDIClassic;
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bool mHasVariations;
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bool mHasVariationsInitialized;
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mozilla::ThreadSafeWeakPtr<mozilla::gfx::UnscaledFontDWrite> mUnscaledFont;
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mozilla::ThreadSafeWeakPtr<mozilla::gfx::UnscaledFontDWrite> mUnscaledFontBold;
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};
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// custom text renderer used to determine the fallback font for a given char
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class DWriteFontFallbackRenderer final : public IDWriteTextRenderer
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{
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public:
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explicit DWriteFontFallbackRenderer(IDWriteFactory *aFactory)
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: mRefCount(0)
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{
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HRESULT hr = S_OK;
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hr = aFactory->GetSystemFontCollection(getter_AddRefs(mSystemFonts));
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NS_ASSERTION(SUCCEEDED(hr), "GetSystemFontCollection failed!");
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}
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~DWriteFontFallbackRenderer()
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{}
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// IDWriteTextRenderer methods
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IFACEMETHOD(DrawGlyphRun)(
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void* clientDrawingContext,
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FLOAT baselineOriginX,
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FLOAT baselineOriginY,
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DWRITE_MEASURING_MODE measuringMode,
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DWRITE_GLYPH_RUN const* glyphRun,
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DWRITE_GLYPH_RUN_DESCRIPTION const* glyphRunDescription,
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IUnknown* clientDrawingEffect
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);
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IFACEMETHOD(DrawUnderline)(
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void* clientDrawingContext,
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FLOAT baselineOriginX,
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FLOAT baselineOriginY,
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DWRITE_UNDERLINE const* underline,
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IUnknown* clientDrawingEffect
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)
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{
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return E_NOTIMPL;
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}
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IFACEMETHOD(DrawStrikethrough)(
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void* clientDrawingContext,
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FLOAT baselineOriginX,
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FLOAT baselineOriginY,
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DWRITE_STRIKETHROUGH const* strikethrough,
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IUnknown* clientDrawingEffect
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)
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{
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return E_NOTIMPL;
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}
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IFACEMETHOD(DrawInlineObject)(
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void* clientDrawingContext,
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FLOAT originX,
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FLOAT originY,
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IDWriteInlineObject* inlineObject,
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BOOL isSideways,
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BOOL isRightToLeft,
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IUnknown* clientDrawingEffect
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)
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{
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return E_NOTIMPL;
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}
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// IDWritePixelSnapping methods
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IFACEMETHOD(IsPixelSnappingDisabled)(
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void* clientDrawingContext,
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BOOL* isDisabled
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)
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{
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*isDisabled = FALSE;
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return S_OK;
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}
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IFACEMETHOD(GetCurrentTransform)(
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void* clientDrawingContext,
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DWRITE_MATRIX* transform
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)
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{
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const DWRITE_MATRIX ident = {1.0, 0.0, 0.0, 1.0, 0.0, 0.0};
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*transform = ident;
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return S_OK;
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}
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IFACEMETHOD(GetPixelsPerDip)(
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void* clientDrawingContext,
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FLOAT* pixelsPerDip
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)
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{
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*pixelsPerDip = 1.0f;
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return S_OK;
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}
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// IUnknown methods
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IFACEMETHOD_(unsigned long, AddRef) ()
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{
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return InterlockedIncrement(&mRefCount);
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}
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IFACEMETHOD_(unsigned long, Release) ()
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{
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unsigned long newCount = InterlockedDecrement(&mRefCount);
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if (newCount == 0)
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{
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delete this;
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return 0;
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}
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return newCount;
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}
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IFACEMETHOD(QueryInterface) (IID const& riid, void** ppvObject)
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{
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if (__uuidof(IDWriteTextRenderer) == riid) {
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*ppvObject = this;
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} else if (__uuidof(IDWritePixelSnapping) == riid) {
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*ppvObject = this;
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} else if (__uuidof(IUnknown) == riid) {
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*ppvObject = this;
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} else {
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*ppvObject = nullptr;
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return E_FAIL;
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}
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this->AddRef();
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return S_OK;
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}
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const nsString& FallbackFamilyName() { return mFamilyName; }
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protected:
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long mRefCount;
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RefPtr<IDWriteFontCollection> mSystemFonts;
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nsString mFamilyName;
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};
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class gfxDWriteFontList : public gfxPlatformFontList {
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public:
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gfxDWriteFontList();
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static gfxDWriteFontList* PlatformFontList() {
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return static_cast<gfxDWriteFontList*>(sPlatformFontList);
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}
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// initialize font lists
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virtual nsresult InitFontListForPlatform() override;
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gfxFontFamily* CreateFontFamily(const nsAString& aName) const override;
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virtual gfxFontEntry* LookupLocalFont(const nsAString& aFontName,
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WeightRange aWeightForEntry,
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StretchRange aStretchForEntry,
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SlantStyleRange aStyleForEntry);
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virtual gfxFontEntry* MakePlatformFont(const nsAString& aFontName,
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WeightRange aWeightForEntry,
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StretchRange aStretchForEntry,
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SlantStyleRange aStyleForEntry,
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const uint8_t* aFontData,
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uint32_t aLength);
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bool GetStandardFamilyName(const nsAString& aFontName,
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nsAString& aFamilyName);
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IDWriteGdiInterop *GetGDIInterop() { return mGDIInterop; }
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bool UseGDIFontTableAccess() { return mGDIFontTableAccess; }
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bool FindAndAddFamilies(const nsAString& aFamily,
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nsTArray<FamilyAndGeneric>* aOutput,
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FindFamiliesFlags aFlags,
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gfxFontStyle* aStyle = nullptr,
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gfxFloat aDevToCssSize = 1.0) override;
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gfxFloat GetForceGDIClassicMaxFontSize() { return mForceGDIClassicMaxFontSize; }
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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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protected:
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virtual gfxFontFamily*
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GetDefaultFontForPlatform(const gfxFontStyle* aStyle) override;
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// attempt to use platform-specific fallback for the given character,
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// return null if no usable result found
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gfxFontEntry*
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PlatformGlobalFontFallback(const uint32_t aCh,
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Script aRunScript,
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const gfxFontStyle* aMatchStyle,
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gfxFontFamily** aMatchedFamily) override;
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private:
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friend class gfxDWriteFontFamily;
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nsresult GetFontSubstitutes();
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void GetDirectWriteSubstitutes();
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virtual bool UsesSystemFallback() { return true; }
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void GetFontsFromCollection(IDWriteFontCollection* aCollection);
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#ifdef MOZ_BUNDLED_FONTS
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already_AddRefed<IDWriteFontCollection>
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CreateBundledFontsCollection(IDWriteFactory* aFactory);
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#endif
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/**
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* Fonts listed in the registry as substitutes but for which no actual
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* font family is found.
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*/
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nsTArray<nsString> mNonExistingFonts;
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/**
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* Table of font substitutes, we grab this from the registry to get
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* alternative font names.
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*/
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FontFamilyTable mFontSubstitutes;
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virtual already_AddRefed<FontInfoData> CreateFontInfoData();
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gfxFloat mForceGDIClassicMaxFontSize;
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// whether to use GDI font table access routines
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bool mGDIFontTableAccess;
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RefPtr<IDWriteGdiInterop> mGDIInterop;
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RefPtr<DWriteFontFallbackRenderer> mFallbackRenderer;
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RefPtr<IDWriteTextFormat> mFallbackFormat;
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RefPtr<IDWriteFontCollection> mSystemFonts;
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#ifdef MOZ_BUNDLED_FONTS
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RefPtr<IDWriteFontCollection> mBundledFonts;
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#endif
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};
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#endif /* GFX_DWRITEFONTLIST_H */
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