The Tor Browser: gfx/thebes/gfxPangoFonts.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-

     2  * This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef GFX_PANGOFONTS_H

     7 #define GFX_PANGOFONTS_H

     9 #include "cairo.h"

    10 #include "gfxTypes.h"

    11 #include "gfxFont.h"

    13 #include "nsAutoRef.h"

    14 #include "nsTArray.h"

    16 #include <pango/pango.h>

    18 class gfxFcFontSet;

    19 class gfxFcFont;

    20 class gfxProxyFontEntry;

    21 typedef struct _FcPattern FcPattern;

    22 typedef struct FT_FaceRec_* FT_Face;

    23 typedef struct FT_LibraryRec_  *FT_Library;

    25 class gfxPangoFontGroup : public gfxFontGroup {

    26 public:

    27     gfxPangoFontGroup (const nsAString& families,

    28                        const gfxFontStyle *aStyle,

    29                        gfxUserFontSet *aUserFontSet);

    30     virtual ~gfxPangoFontGroup ();

    32     virtual gfxFontGroup *Copy(const gfxFontStyle *aStyle);

    34     virtual gfxFont *GetFontAt(int32_t i);

    36     virtual void UpdateFontList();

    38     virtual already_AddRefed<gfxFont>

    39         FindFontForChar(uint32_t aCh, uint32_t aPrevCh, int32_t aRunScript,

    40                         gfxFont *aPrevMatchedFont,

    41                         uint8_t *aMatchType);

    43     static void Shutdown();

    45     // Used for @font-face { src: local(); }

    46     static gfxFontEntry *NewFontEntry(const gfxProxyFontEntry &aProxyEntry,

    47                                       const nsAString &aFullname);

    48     // Used for @font-face { src: url(); }

    49     static gfxFontEntry *NewFontEntry(const gfxProxyFontEntry &aProxyEntry,

    50                                       const uint8_t *aFontData,

    51                                       uint32_t aLength);

    53 private:

    54     // @param aLang [in] language to use for pref fonts and system default font

    55     //        selection, or nullptr for the language guessed from the

    56     //        gfxFontStyle.

    57     // The FontGroup holds a reference to this set.

    58     gfxFcFontSet *GetFontSet(PangoLanguage *aLang = nullptr);

    60     class FontSetByLangEntry {

    61     public:

    62         FontSetByLangEntry(PangoLanguage *aLang, gfxFcFontSet *aFontSet);

    63         PangoLanguage *mLang;

    64         nsRefPtr<gfxFcFontSet> mFontSet;

    65     };

    66     // There is only one of entry in this array unless characters from scripts

    67     // of other languages are measured.

    68     nsAutoTArray<FontSetByLangEntry,1> mFontSets;

    70     gfxFloat mSizeAdjustFactor;

    71     PangoLanguage *mPangoLanguage;

    73     void GetFcFamilies(nsTArray<nsString> *aFcFamilyList,

    74                        nsIAtom *aLanguage);

    76     // @param aLang [in] language to use for pref fonts and system font

    77     //        resolution, or nullptr to guess a language from the gfxFontStyle.

    78     // @param aMatchPattern [out] if non-nullptr, will return the pattern used.

    79     already_AddRefed<gfxFcFontSet>

    80     MakeFontSet(PangoLanguage *aLang, gfxFloat aSizeAdjustFactor,

    81                 nsAutoRef<FcPattern> *aMatchPattern = nullptr);

    83     gfxFcFontSet *GetBaseFontSet();

    84     gfxFcFont *GetBaseFont();

    86     gfxFloat GetSizeAdjustFactor()

    87     {

    88         if (mFontSets.Length() == 0)

    89             GetBaseFontSet();

    90         return mSizeAdjustFactor;

    91     }

    93     friend class gfxSystemFcFontEntry;

    94     static FT_Library GetFTLibrary();

    95 };

    97 #endif /* GFX_PANGOFONTS_H */

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