gecko/gfx/thebes/public/gfxAtsuiFonts.h

/* -*- 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 thebes gfx 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.
 *
 * Contributor(s):
 *   Vladimir Vukicevic <vladimir@pobox.com>
 *   Masayuki Nakano <masayuki@d-toybox.com>
 *   John Daggett <jdaggett@mozilla.com>
 *   Jonathan Kew <jfkthame@gmail.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
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 * 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_ATSUIFONTS_H
#define GFX_ATSUIFONTS_H

#ifndef __LP64__ /* ATSUI not available on 64-bit */

#include "cairo.h"
#include "gfxTypes.h"
#include "gfxFont.h"
#include "gfxFontUtils.h"
#include "gfxPlatform.h"

#include <Carbon/Carbon.h>

class MacOSFontEntry;

#define kLiGothicBadCharUnicode  0x775B // ATSUI failure on 10.6 (bug 532346)
#define kLiGothicBadCharGlyph    3774   // the expected glyph for this char

class gfxAtsuiFont : public gfxFont {
public:

    gfxAtsuiFont(MacOSFontEntry *aFontEntry,
                 const gfxFontStyle *fontStyle, PRBool aNeedsBold);

    virtual ~gfxAtsuiFont();

    virtual const gfxFont::Metrics& GetMetrics();

    float GetCharWidth(PRUnichar c, PRUint32 *aGlyphID = nsnull);
    float GetCharHeight(PRUnichar c);

    ATSFontRef GetATSFontRef();

    cairo_font_face_t *CairoFontFace() { return mFontFace; }
    cairo_scaled_font_t *CairoScaledFont() { return mScaledFont; }

    ATSUStyle GetATSUStyle() { return mATSUStyle; }

    virtual nsString GetUniqueName();

    virtual PRUint32 GetSpaceGlyph() { return mSpaceGlyph; }

    PRBool HasMirroringInfo();

    virtual void SetupGlyphExtents(gfxContext *aContext, PRUint32 aGlyphID,
            PRBool aNeedTight, gfxGlyphExtents *aExtents);

protected:
    const gfxFontStyle *mFontStyle;

    ATSUStyle mATSUStyle;

    PRBool mHasMirroring;
    PRBool mHasMirroringLookedUp;

    nsString mUniqueName;

    cairo_font_face_t *mFontFace;
    cairo_scaled_font_t *mScaledFont;

    gfxFont::Metrics mMetrics;

    gfxFloat mAdjustedSize;
    PRUint32 mSpaceGlyph;    

    void InitMetrics(ATSUFontID aFontID, ATSFontRef aFontRef);

    virtual void InitTextRun(gfxTextRun *aTextRun,
                             const PRUnichar *aString,
                             PRUint32 aRunStart,
                             PRUint32 aRunLength);

    virtual PRBool SetupCairoFont(gfxContext *aContext);
};

#endif /* not __LP64__ */

#endif /* GFX_ATSUIFONTS_H */