gecko/gfx/thebes/gfxGDIFontList.h
2011-10-17 10:59:28 -04:00

371 lines
12 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Corporation code.
*
* The Initial Developer of the Original Code is Mozilla Corporation.
* Portions created by the Initial Developer are Copyright (C) 2009
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Stuart Parmenter <stuart@mozilla.com>
* Masayuki Nakano <masayuki@d-toybox.com>
* John Daggett <jdaggett@mozilla.com>
* Jonathan Kew <jfkthame@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef GFX_GDIFONTLIST_H
#define GFX_GDIFONTLIST_H
#include "gfxWindowsPlatform.h"
#include "gfxPlatformFontList.h"
#include "gfxAtoms.h"
#include <windows.h>
class AutoDC // get the global device context, and auto-release it on destruction
{
public:
AutoDC() {
mDC = ::GetDC(NULL);
}
~AutoDC() {
::ReleaseDC(NULL, 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 = NULL;
}
}
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 != NULL;
}
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 : public gfxFontEntry
{
public:
LPLOGFONTW GetLogFont() { return &mLogFont; }
nsresult ReadCMAP();
virtual bool IsSymbolFont();
void FillLogFont(LOGFONTW *aLogFont, bool aItalic,
PRUint16 aWeight, gfxFloat aSize, bool aUseCleartype);
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 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;
}
virtual bool SupportsLangGroup(nsIAtom* aLangGroup) const {
if (!aLangGroup || aLangGroup == gfxAtoms::x_unicode) {
return true;
}
PRInt16 bit = -1;
/* map our langgroup names in to Windows charset bits */
if (aLangGroup == gfxAtoms::x_western) {
bit = ANSI_CHARSET;
} else if (aLangGroup == gfxAtoms::ja) {
bit = SHIFTJIS_CHARSET;
} else if (aLangGroup == gfxAtoms::ko) {
bit = HANGEUL_CHARSET;
} else if (aLangGroup == gfxAtoms::ko_xxx) {
bit = JOHAB_CHARSET;
} else if (aLangGroup == gfxAtoms::zh_cn) {
bit = GB2312_CHARSET;
} else if (aLangGroup == gfxAtoms::zh_tw) {
bit = CHINESEBIG5_CHARSET;
} else if (aLangGroup == gfxAtoms::el) {
bit = GREEK_CHARSET;
} else if (aLangGroup == gfxAtoms::tr) {
bit = TURKISH_CHARSET;
} else if (aLangGroup == gfxAtoms::he) {
bit = HEBREW_CHARSET;
} else if (aLangGroup == gfxAtoms::ar) {
bit = ARABIC_CHARSET;
} else if (aLangGroup == gfxAtoms::x_baltic) {
bit = BALTIC_CHARSET;
} else if (aLangGroup == gfxAtoms::x_cyrillic) {
bit = RUSSIAN_CHARSET;
} else if (aLangGroup == gfxAtoms::th) {
bit = THAI_CHARSET;
} else if (aLangGroup == gfxAtoms::x_central_euro) {
bit = EASTEUROPE_CHARSET;
} else if (aLangGroup == gfxAtoms::x_symbol) {
bit = SYMBOL_CHARSET;
}
if (bit != -1) {
return mCharset.test(bit);
}
return false;
}
virtual bool SupportsRange(PRUint8 range) {
return mUnicodeRanges.test(range);
}
virtual bool SkipDuringSystemFallback() {
return !HasCmapTable(); // explicitly skip non-SFNT fonts
}
virtual bool TestCharacterMap(PRUint32 aCh);
// create a font entry for a font with a given name
static GDIFontEntry* CreateFontEntry(const nsAString& aName,
gfxWindowsFontType aFontType,
bool aItalic,
PRUint16 aWeight, PRInt16 aStretch,
gfxUserFontData* aUserFontData);
// create a font entry for a font referenced by its fullname
static GDIFontEntry* LoadLocalFont(const gfxProxyFontEntry &aProxyEntry,
const nsAString& aFullname);
PRUint8 mWindowsFamily;
PRUint8 mWindowsPitch;
gfxWindowsFontType mFontType;
bool mForceGDI : 1;
bool mUnknownCMAP : 1;
gfxSparseBitSet mCharset;
gfxSparseBitSet mUnicodeRanges;
protected:
friend class gfxWindowsFont;
GDIFontEntry(const nsAString& aFaceName, gfxWindowsFontType aFontType,
bool aItalic, PRUint16 aWeight, PRInt16 aStretch,
gfxUserFontData *aUserFontData);
void InitLogFont(const nsAString& aName, gfxWindowsFontType aFontType);
virtual gfxFont *CreateFontInstance(const gfxFontStyle *aFontStyle, bool aNeedsBold);
virtual nsresult GetFontTable(PRUint32 aTableTag,
FallibleTArray<PRUint8>& aBuffer);
LOGFONTW mLogFont;
};
// a single font family, referencing one or more faces
class GDIFontFamily : public gfxFontFamily
{
public:
GDIFontFamily(nsAString &aName) :
gfxFontFamily(aName) {}
virtual void FindStyleVariations();
private:
static int CALLBACK FamilyAddStylesProc(const ENUMLOGFONTEXW *lpelfe,
const NEWTEXTMETRICEXW *nmetrics,
DWORD fontType, LPARAM data);
};
class gfxGDIFontList : public gfxPlatformFontList {
public:
static gfxGDIFontList* PlatformFontList() {
return static_cast<gfxGDIFontList*>(sPlatformFontList);
}
// initialize font lists
virtual nsresult InitFontList();
virtual gfxFontEntry* GetDefaultFont(const gfxFontStyle* aStyle, bool& aNeedsBold);
virtual gfxFontEntry* LookupLocalFont(const gfxProxyFontEntry *aProxyEntry,
const nsAString& aFontName);
virtual gfxFontEntry* MakePlatformFont(const gfxProxyFontEntry *aProxyEntry,
const PRUint8 *aFontData, PRUint32 aLength);
virtual bool ResolveFontName(const nsAString& aFontName,
nsAString& aResolvedFontName);
private:
friend class gfxWindowsPlatform;
gfxGDIFontList();
void InitializeFontEmbeddingProcs();
nsresult GetFontSubstitutes();
static int CALLBACK EnumFontFamExProc(ENUMLOGFONTEXW *lpelfe,
NEWTEXTMETRICEXW *lpntme,
DWORD fontType,
LPARAM lParam);
typedef nsDataHashtable<nsStringHashKey, nsRefPtr<gfxFontFamily> > FontTable;
FontTable mFontSubstitutes;
nsTArray<nsString> mNonExistingFonts;
};
#endif /* GFX_GDIFONTLIST_H */