gecko/gfx/thebes/gfxFT2Fonts.h

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5.4 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 Foundation code.
*
* The Initial Developer of the Original Code is Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2005
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Vladimir Vukicevic <vladimir@mozilla.com>
* Masayuki Nakano <masayuki@d-toybox.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_FT2FONTS_H
#define GFX_FT2FONTS_H
#include "cairo.h"
#include "gfxTypes.h"
#include "gfxFont.h"
#include "gfxFT2FontBase.h"
#include "gfxContext.h"
#include "gfxFontUtils.h"
#include "gfxUserFontSet.h"
class FT2FontEntry;
class gfxFT2Font : public gfxFT2FontBase {
public: // new functions
gfxFT2Font(cairo_scaled_font_t *aCairoFont,
FT2FontEntry *aFontEntry,
const gfxFontStyle *aFontStyle,
bool aNeedsBold);
virtual ~gfxFT2Font ();
cairo_font_face_t *CairoFontFace();
FT2FontEntry *GetFontEntry();
static already_AddRefed<gfxFT2Font>
GetOrMakeFont(const nsAString& aName, const gfxFontStyle *aStyle,
bool aNeedsBold = false);
static already_AddRefed<gfxFT2Font>
GetOrMakeFont(FT2FontEntry *aFontEntry, const gfxFontStyle *aStyle,
bool aNeedsBold = false);
struct CachedGlyphData {
CachedGlyphData()
: glyphIndex(0xffffffffU) { }
CachedGlyphData(PRUint32 gid)
: glyphIndex(gid) { }
PRUint32 glyphIndex;
PRInt32 lsbDelta;
PRInt32 rsbDelta;
PRInt32 xAdvance;
};
const CachedGlyphData* GetGlyphDataForChar(PRUint32 ch) {
CharGlyphMapEntryType *entry = mCharGlyphCache.PutEntry(ch);
if (!entry)
return nsnull;
if (entry->mData.glyphIndex == 0xffffffffU) {
// this is a new entry, fill it
FillGlyphDataForChar(ch, &entry->mData);
}
return &entry->mData;
}
protected:
virtual bool ShapeWord(gfxContext *aContext,
gfxShapedWord *aShapedWord,
const PRUnichar *aString,
bool aPreferPlatformShaping = false);
void FillGlyphDataForChar(PRUint32 ch, CachedGlyphData *gd);
void AddRange(gfxShapedWord *aShapedWord, const PRUnichar *str);
typedef nsBaseHashtableET<nsUint32HashKey, CachedGlyphData> CharGlyphMapEntryType;
typedef nsTHashtable<CharGlyphMapEntryType> CharGlyphMap;
CharGlyphMap mCharGlyphCache;
};
#ifndef ANDROID // not needed on Android, uses the standard gfxFontGroup directly
class THEBES_API gfxFT2FontGroup : public gfxFontGroup {
public: // new functions
gfxFT2FontGroup (const nsAString& families,
const gfxFontStyle *aStyle,
gfxUserFontSet *aUserFontSet);
virtual ~gfxFT2FontGroup ();
protected: // from gfxFontGroup
virtual gfxFontGroup *Copy(const gfxFontStyle *aStyle);
protected: // new functions
static bool FontCallback (const nsAString & fontName,
const nsACString & genericName,
bool aUseFontSet,
void *closure);
bool mEnableKerning;
void GetPrefFonts(nsIAtom *aLangGroup,
nsTArray<nsRefPtr<gfxFontEntry> >& aFontEntryList);
void GetCJKPrefFonts(nsTArray<nsRefPtr<gfxFontEntry> >& aFontEntryList);
void FamilyListToArrayList(const nsString& aFamilies,
nsIAtom *aLangGroup,
nsTArray<nsRefPtr<gfxFontEntry> > *aFontEntryList);
already_AddRefed<gfxFT2Font> WhichFontSupportsChar(const nsTArray<nsRefPtr<gfxFontEntry> >& aFontEntryList,
PRUint32 aCh);
already_AddRefed<gfxFont> WhichPrefFontSupportsChar(PRUint32 aCh);
already_AddRefed<gfxFont> WhichSystemFontSupportsChar(PRUint32 aCh);
nsTArray<gfxTextRange> mRanges;
nsString mString;
};
#endif // !ANDROID
#endif /* GFX_FT2FONTS_H */