gecko/gfx/thebes/gfxPangoFonts.h
2012-05-21 12:12:37 +01:00

102 lines
3.4 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* 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_PANGOFONTS_H
#define GFX_PANGOFONTS_H
#include "cairo.h"
#include "gfxTypes.h"
#include "gfxFont.h"
#include "nsAutoRef.h"
#include "nsTArray.h"
#include <pango/pango.h>
class gfxFcFontSet;
class gfxFcFont;
class gfxProxyFontEntry;
typedef struct _FcPattern FcPattern;
typedef struct FT_FaceRec_* FT_Face;
typedef struct FT_LibraryRec_ *FT_Library;
class THEBES_API gfxPangoFontGroup : public gfxFontGroup {
public:
gfxPangoFontGroup (const nsAString& families,
const gfxFontStyle *aStyle,
gfxUserFontSet *aUserFontSet);
virtual ~gfxPangoFontGroup ();
virtual gfxFontGroup *Copy(const gfxFontStyle *aStyle);
virtual gfxFont *GetFontAt(PRInt32 i);
virtual void UpdateFontList();
virtual already_AddRefed<gfxFont>
FindFontForChar(PRUint32 aCh, PRUint32 aPrevCh, PRInt32 aRunScript,
gfxFont *aPrevMatchedFont,
PRUint8 *aMatchType);
static void Shutdown();
// Used for @font-face { src: local(); }
static gfxFontEntry *NewFontEntry(const gfxProxyFontEntry &aProxyEntry,
const nsAString &aFullname);
// Used for @font-face { src: url(); }
static gfxFontEntry *NewFontEntry(const gfxProxyFontEntry &aProxyEntry,
const PRUint8 *aFontData,
PRUint32 aLength);
// Interfaces used internally
// (but public so that they can be accessed from non-member functions):
// A language guessed from the gfxFontStyle
PangoLanguage *GetPangoLanguage() { return mPangoLanguage; }
private:
// @param aLang [in] language to use for pref fonts and system default font
// selection, or NULL for the language guessed from the gfxFontStyle.
// The FontGroup holds a reference to this set.
gfxFcFontSet *GetFontSet(PangoLanguage *aLang = NULL);
class FontSetByLangEntry {
public:
FontSetByLangEntry(PangoLanguage *aLang, gfxFcFontSet *aFontSet);
PangoLanguage *mLang;
nsRefPtr<gfxFcFontSet> mFontSet;
};
// There is only one of entry in this array unless characters from scripts
// of other languages are measured.
nsAutoTArray<FontSetByLangEntry,1> mFontSets;
gfxFloat mSizeAdjustFactor;
PangoLanguage *mPangoLanguage;
void GetFcFamilies(nsTArray<nsString> *aFcFamilyList,
nsIAtom *aLanguage);
// @param aLang [in] language to use for pref fonts and system font
// resolution, or NULL to guess a language from the gfxFontStyle.
// @param aMatchPattern [out] if non-NULL, will return the pattern used.
already_AddRefed<gfxFcFontSet>
MakeFontSet(PangoLanguage *aLang, gfxFloat aSizeAdjustFactor,
nsAutoRef<FcPattern> *aMatchPattern = NULL);
gfxFcFontSet *GetBaseFontSet();
gfxFcFont *GetBaseFont();
gfxFloat GetSizeAdjustFactor()
{
if (mFontSets.Length() == 0)
GetBaseFontSet();
return mSizeAdjustFactor;
}
static FT_Library GetFTLibrary();
};
#endif /* GFX_PANGOFONTS_H */