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| -rw-r--r-- | gfx/thebes/gfxGDIFontList.h | 356 |
1 files changed, 356 insertions, 0 deletions
diff --git a/gfx/thebes/gfxGDIFontList.h b/gfx/thebes/gfxGDIFontList.h new file mode 100644 index 0000000000..70a2357e17 --- /dev/null +++ b/gfx/thebes/gfxGDIFontList.h @@ -0,0 +1,356 @@ +/* -*- Mode: C++; tab-width: 20; 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 GFX_GDIFONTLIST_H +#define GFX_GDIFONTLIST_H + +#include "mozilla/FontPropertyTypes.h" +#include "mozilla/MemoryReporting.h" +#include "gfxWindowsPlatform.h" +#include "gfxPlatformFontList.h" +#include "nsGkAtoms.h" +#include "mozilla/gfx/UnscaledFontGDI.h" + +#include <windows.h> + +class AutoDC // get the global device context, and auto-release it on + // destruction +{ + public: + AutoDC() { mDC = ::GetDC(nullptr); } + + ~AutoDC() { ::ReleaseDC(nullptr, mDC); } + + HDC GetDC() { return mDC; } + + private: + HDC mDC; +}; + +class AutoSelectFont // select a font into the given DC, and auto-restore +{ + public: + AutoSelectFont(HDC aDC, LOGFONTW* aLogFont) : mOwnsFont(false) { + mFont = ::CreateFontIndirectW(aLogFont); + if (mFont) { + mOwnsFont = true; + mDC = aDC; + mOldFont = (HFONT)::SelectObject(aDC, mFont); + } else { + mOldFont = nullptr; + } + } + + AutoSelectFont(HDC aDC, HFONT aFont) : mOwnsFont(false) { + mDC = aDC; + mFont = aFont; + mOldFont = (HFONT)::SelectObject(aDC, aFont); + } + + ~AutoSelectFont() { + if (mOldFont) { + ::SelectObject(mDC, mOldFont); + if (mOwnsFont) { + ::DeleteObject(mFont); + } + } + } + + bool IsValid() const { return mFont != nullptr; } + + HFONT GetFont() const { return mFont; } + + private: + HDC mDC; + HFONT mFont; + HFONT mOldFont; + bool mOwnsFont; +}; + +/** + * List of different types of fonts we support on Windows. + * These can generally be lumped in to 3 categories where we have to + * do special things: Really old fonts bitmap and vector fonts (device + * and raster), Type 1 fonts, and TrueType/OpenType fonts. + * + * This list is sorted in order from least prefered to most prefered. + * We prefer Type1 fonts over OpenType fonts to avoid falling back to + * things like Arial (opentype) when you ask for Helvetica (type1) + **/ +enum gfxWindowsFontType { + GFX_FONT_TYPE_UNKNOWN = 0, + GFX_FONT_TYPE_DEVICE, + GFX_FONT_TYPE_RASTER, + GFX_FONT_TYPE_TRUETYPE, + GFX_FONT_TYPE_PS_OPENTYPE, + GFX_FONT_TYPE_TT_OPENTYPE, + GFX_FONT_TYPE_TYPE1 +}; + +// A single member of a font family (i.e. a single face, such as Times Italic) +// represented as a LOGFONT that will resolve to the correct face. +// This replaces FontEntry from gfxWindowsFonts.h/cpp. +class GDIFontEntry final : public gfxFontEntry { + public: + LPLOGFONTW GetLogFont() { return &mLogFont; } + + nsresult ReadCMAP(FontInfoData* aFontInfoData = nullptr) override; + + void FillLogFont(LOGFONTW* aLogFont, LONG aWeight, gfxFloat aSize); + + static gfxWindowsFontType DetermineFontType(const NEWTEXTMETRICW& metrics, + DWORD fontType) { + gfxWindowsFontType feType; + if (metrics.ntmFlags & NTM_TYPE1) + feType = GFX_FONT_TYPE_TYPE1; + else if (metrics.ntmFlags & NTM_PS_OPENTYPE) + feType = GFX_FONT_TYPE_PS_OPENTYPE; + else if (metrics.ntmFlags & NTM_TT_OPENTYPE) + feType = GFX_FONT_TYPE_TT_OPENTYPE; + else if (fontType == TRUETYPE_FONTTYPE) + feType = GFX_FONT_TYPE_TRUETYPE; + else if (fontType == RASTER_FONTTYPE) + feType = GFX_FONT_TYPE_RASTER; + else if (fontType == DEVICE_FONTTYPE) + feType = GFX_FONT_TYPE_DEVICE; + else + feType = GFX_FONT_TYPE_UNKNOWN; + + return feType; + } + + bool IsType1() const { return (mFontType == GFX_FONT_TYPE_TYPE1); } + + bool IsTrueType() const { + return (mFontType == GFX_FONT_TYPE_TRUETYPE || + mFontType == GFX_FONT_TYPE_PS_OPENTYPE || + mFontType == GFX_FONT_TYPE_TT_OPENTYPE); + } + + virtual bool SupportsRange(uint8_t range) { + return mUnicodeRanges.test(range); + } + + virtual bool SkipDuringSystemFallback() { + return !HasCmapTable(); // explicitly skip non-SFNT fonts + } + + virtual bool TestCharacterMap(uint32_t aCh); + + virtual void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf, + FontListSizes* aSizes) const; + + gfxFontEntry* Clone() const override; + + // GDI backend doesn't support font variations: + bool HasVariations() override { return false; } + void GetVariationAxes(nsTArray<gfxFontVariationAxis>&) override {} + void GetVariationInstances(nsTArray<gfxFontVariationInstance>&) override {} + + // create a font entry for a font with a given name + static GDIFontEntry* CreateFontEntry(const nsACString& aName, + gfxWindowsFontType aFontType, + SlantStyleRange aStyle, + WeightRange aWeight, + StretchRange aStretch, + gfxUserFontData* aUserFontData); + + gfxWindowsFontType mFontType; + bool mForceGDI; + + gfxSparseBitSet mUnicodeRanges; + + protected: + friend class gfxGDIFont; + + GDIFontEntry(const nsACString& aFaceName, gfxWindowsFontType aFontType, + SlantStyleRange aStyle, WeightRange aWeight, + StretchRange aStretch, gfxUserFontData* aUserFontData); + + void InitLogFont(const nsACString& aName, gfxWindowsFontType aFontType); + + gfxFont* CreateFontInstance(const gfxFontStyle* aFontStyle) override; + + virtual nsresult CopyFontTable(uint32_t aTableTag, + nsTArray<uint8_t>& aBuffer) override; + + already_AddRefed<mozilla::gfx::UnscaledFontGDI> LookupUnscaledFont( + HFONT aFont); + + LOGFONTW mLogFont; + + mozilla::ThreadSafeWeakPtr<mozilla::gfx::UnscaledFontGDI> mUnscaledFont; +}; + +// a single font family, referencing one or more faces +class GDIFontFamily final : public gfxFontFamily { + public: + GDIFontFamily(const nsACString& aName, FontVisibility aVisibility) + : gfxFontFamily(aName, aVisibility), + mWindowsFamily(0), + mWindowsPitch(0), + mCharset() {} + + virtual void FindStyleVariations(FontInfoData* aFontInfoData = nullptr); + + bool FilterForFontList(nsAtom* aLangGroup, + const nsACString& aGeneric) const final { + return !IsSymbolFontFamily() && SupportsLangGroup(aLangGroup) && + MatchesGenericFamily(aGeneric); + } + + protected: + friend class gfxGDIFontList; + + // helpers for FilterForFontList + bool IsSymbolFontFamily() const { return mCharset.test(SYMBOL_CHARSET); } + + bool MatchesGenericFamily(const nsACString& aGeneric) const { + if (aGeneric.IsEmpty()) { + return true; + } + + // Japanese 'Mincho' fonts do not belong to FF_MODERN even if + // they are fixed pitch because they have variable stroke width. + if (mWindowsFamily == FF_ROMAN && mWindowsPitch & FIXED_PITCH) { + return aGeneric.EqualsLiteral("monospace"); + } + + // Japanese 'Gothic' fonts do not belong to FF_SWISS even if + // they are variable pitch because they have constant stroke width. + if (mWindowsFamily == FF_MODERN && mWindowsPitch & VARIABLE_PITCH) { + return aGeneric.EqualsLiteral("sans-serif"); + } + + // All other fonts will be grouped correctly using family... + switch (mWindowsFamily) { + case FF_DONTCARE: + return false; + case FF_ROMAN: + return aGeneric.EqualsLiteral("serif"); + case FF_SWISS: + return aGeneric.EqualsLiteral("sans-serif"); + case FF_MODERN: + return aGeneric.EqualsLiteral("monospace"); + case FF_SCRIPT: + return aGeneric.EqualsLiteral("cursive"); + case FF_DECORATIVE: + return aGeneric.EqualsLiteral("fantasy"); + } + + return false; + } + + bool SupportsLangGroup(nsAtom* aLangGroup) const { + if (!aLangGroup || aLangGroup == nsGkAtoms::Unicode) { + return true; + } + + int16_t bit = -1; + + /* map our langgroup names in to Windows charset bits */ + if (aLangGroup == nsGkAtoms::x_western) { + bit = ANSI_CHARSET; + } else if (aLangGroup == nsGkAtoms::Japanese) { + bit = SHIFTJIS_CHARSET; + } else if (aLangGroup == nsGkAtoms::ko) { + bit = HANGEUL_CHARSET; + } else if (aLangGroup == nsGkAtoms::zh_cn) { + bit = GB2312_CHARSET; + } else if (aLangGroup == nsGkAtoms::zh_tw) { + bit = CHINESEBIG5_CHARSET; + } else if (aLangGroup == nsGkAtoms::el) { + bit = GREEK_CHARSET; + } else if (aLangGroup == nsGkAtoms::he) { + bit = HEBREW_CHARSET; + } else if (aLangGroup == nsGkAtoms::ar) { + bit = ARABIC_CHARSET; + } else if (aLangGroup == nsGkAtoms::x_cyrillic) { + bit = RUSSIAN_CHARSET; + } else if (aLangGroup == nsGkAtoms::th) { + bit = THAI_CHARSET; + } + + if (bit != -1) { + return mCharset.test(bit); + } + + return false; + } + + uint8_t mWindowsFamily; + uint8_t mWindowsPitch; + + gfxSparseBitSet mCharset; + + private: + static int CALLBACK FamilyAddStylesProc(const ENUMLOGFONTEXW* lpelfe, + const NEWTEXTMETRICEXW* nmetrics, + DWORD fontType, LPARAM data); +}; + +class gfxGDIFontList final : public gfxPlatformFontList { + public: + static gfxGDIFontList* PlatformFontList() { + return static_cast<gfxGDIFontList*>(sPlatformFontList); + } + + // initialize font lists + virtual nsresult InitFontListForPlatform() override; + + gfxFontFamily* CreateFontFamily(const nsACString& aName, + FontVisibility aVisibility) const override; + + bool FindAndAddFamilies(mozilla::StyleGenericFontFamily aGeneric, + const nsACString& aFamily, + nsTArray<FamilyAndGeneric>* aOutput, + FindFamiliesFlags aFlags, + gfxFontStyle* aStyle = nullptr, + nsAtom* aLanguage = nullptr, + gfxFloat aDevToCssSize = 1.0) override; + + virtual gfxFontEntry* LookupLocalFont(const nsACString& aFontName, + WeightRange aWeightForEntry, + StretchRange aStretchForEntry, + SlantStyleRange aStyleForEntry); + + virtual gfxFontEntry* MakePlatformFont(const nsACString& aFontName, + WeightRange aWeightForEntry, + StretchRange aStretchForEntry, + SlantStyleRange aStyleForEntry, + const uint8_t* aFontData, + uint32_t aLength); + + virtual void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf, + FontListSizes* aSizes) const; + virtual void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf, + FontListSizes* aSizes) const; + + protected: + FontFamily GetDefaultFontForPlatform(const gfxFontStyle* aStyle, + nsAtom* aLanguage = nullptr) override; + + private: + friend class gfxWindowsPlatform; + + gfxGDIFontList(); + + nsresult GetFontSubstitutes(); + + static int CALLBACK EnumFontFamExProc(ENUMLOGFONTEXW* lpelfe, + NEWTEXTMETRICEXW* lpntme, + DWORD fontType, LPARAM lParam); + + virtual already_AddRefed<FontInfoData> CreateFontInfoData(); + +#ifdef MOZ_BUNDLED_FONTS + void ActivateBundledFonts(); +#endif + + FontFamilyTable mFontSubstitutes; + nsTArray<nsCString> mNonExistingFonts; +}; + +#endif /* GFX_GDIFONTLIST_H */ |