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/* -*- 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*>(
gfxPlatformFontList::PlatformFontList());
}
// 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 */