gecko/gfx/thebes/gfxMacPlatformFontList.h

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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 * 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
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 * for the specific language governing rights and limitations under the
 * License.
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 * The Original Code is Mozilla Corporation code.
 *
 * The Initial Developer of the Original Code is Mozilla Foundation.
 * Portions created by the Initial Developer are Copyright (C) 2006-2009
 * the Initial Developer. All Rights Reserved.
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 * Contributor(s):
 *   Vladimir Vukicevic <vladimir@pobox.com>
 *   Masayuki Nakano <masayuki@d-toybox.com>
 *   John Daggett <jdaggett@mozilla.com>
 *   Jonathan Kew <jfkthame@gmail.com>
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 * 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
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#ifndef gfxMacPlatformFontList_H_
#define gfxMacPlatformFontList_H_

#include "nsDataHashtable.h"
#include "nsRefPtrHashtable.h"

#include "gfxPlatformFontList.h"
#include "gfxPlatform.h"

#include <Carbon/Carbon.h>

#include "nsUnicharUtils.h"
#include "nsTArray.h"

class gfxMacPlatformFontList;

// a single member of a font family (i.e. a single face, such as Times Italic)
class MacOSFontEntry : public gfxFontEntry
{
public:
    friend class gfxMacPlatformFontList;

    MacOSFontEntry(const nsAString& aPostscriptName, PRInt32 aWeight,
                   gfxFontFamily *aFamily, PRBool aIsStandardFace = PR_FALSE);

    ATSFontRef GetFontRef();
    nsresult ReadCMAP();

    PRBool RequiresAATLayout() const { return mRequiresAAT; }

    virtual nsresult GetFontTable(PRUint32 aTableTag, FallibleTArray<PRUint8>& aBuffer);

    PRBool IsCFF();

protected:
    // for use with data fonts
    MacOSFontEntry(const nsAString& aPostscriptName, ATSFontRef aFontRef,
                   PRUint16 aWeight, PRUint16 aStretch, PRUint32 aItalicStyle,
                   gfxUserFontData *aUserFontData);

    virtual gfxFont* CreateFontInstance(const gfxFontStyle *aFontStyle, PRBool aNeedsBold);

    ATSFontRef mATSFontRef;
    PRPackedBool mATSFontRefInitialized;
    PRPackedBool mRequiresAAT;
    PRPackedBool mIsCFF;
    PRPackedBool mIsCFFInitialized;
};

class gfxMacPlatformFontList : public gfxPlatformFontList {
public:
    static gfxMacPlatformFontList* PlatformFontList() {
        return static_cast<gfxMacPlatformFontList*>(sPlatformFontList);
    }

    static PRInt32 AppleWeightToCSSWeight(PRInt32 aAppleWeight);

    virtual gfxFontEntry* GetDefaultFont(const gfxFontStyle* aStyle, PRBool& aNeedsBold);

    virtual PRBool GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName);

    virtual gfxFontEntry* LookupLocalFont(const gfxProxyFontEntry *aProxyEntry,
                                          const nsAString& aFontName);
    
    virtual gfxFontEntry* MakePlatformFont(const gfxProxyFontEntry *aProxyEntry,
                                           const PRUint8 *aFontData, PRUint32 aLength);

    void ClearPrefFonts() { mPrefFonts.Clear(); }

private:
    friend class gfxPlatformMac;

    gfxMacPlatformFontList();

    // initialize font lists
    virtual nsresult InitFontList();

    // special case font faces treated as font families (set via prefs)
    void InitSingleFaceList();

    // eliminate faces which have the same ATS font reference
    void EliminateDuplicateFaces(const nsAString& aFamilyName);

    static void ATSNotification(ATSFontNotificationInfoRef aInfo, void* aUserArg);

    // keep track of ATS generation to prevent unneeded updates when loading downloaded fonts
    PRUint32 mATSGeneration;

    enum {
        kATSGenerationInitial = -1
    };
};

#endif /* gfxMacPlatformFontList_H_ */