gecko-dev/gfx/thebes/gfxPangoFonts.h

98 lines
3.2 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 gfxPangoFontGroup : public gfxFontGroup {
public:
gfxPangoFontGroup (const nsAString& families,
const gfxFontStyle *aStyle,
gfxUserFontSet *aUserFontSet);
virtual ~gfxPangoFontGroup ();
virtual gfxFontGroup *Copy(const gfxFontStyle *aStyle);
virtual gfxFont *GetFontAt(int32_t i);
virtual void UpdateFontList();
virtual already_AddRefed<gfxFont>
FindFontForChar(uint32_t aCh, uint32_t aPrevCh, int32_t aRunScript,
gfxFont *aPrevMatchedFont,
uint8_t *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 uint8_t *aFontData,
uint32_t aLength);
private:
// @param aLang [in] language to use for pref fonts and system default font
// selection, or nullptr for the language guessed from the
// gfxFontStyle.
// The FontGroup holds a reference to this set.
gfxFcFontSet *GetFontSet(PangoLanguage *aLang = nullptr);
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 nullptr to guess a language from the gfxFontStyle.
// @param aMatchPattern [out] if non-nullptr, will return the pattern used.
already_AddRefed<gfxFcFontSet>
MakeFontSet(PangoLanguage *aLang, gfxFloat aSizeAdjustFactor,
nsAutoRef<FcPattern> *aMatchPattern = nullptr);
gfxFcFontSet *GetBaseFontSet();
gfxFcFont *GetBaseFont();
gfxFloat GetSizeAdjustFactor()
{
if (mFontSets.Length() == 0)
GetBaseFontSet();
return mSizeAdjustFactor;
}
friend class gfxSystemFcFontEntry;
static FT_Library GetFTLibrary();
};
#endif /* GFX_PANGOFONTS_H */