/*

 * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

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 */

/*

 * (C) Copyright IBM Corp. 1998-2001 - All Rights Reserved

 *

 * The original version of this source code and documentation is

 * copyrighted and owned by IBM. These materials are provided

 * under terms of a License Agreement between IBM and Sun.

 * This technology is protected by multiple US and International

 * patents. This notice and attribution to IBM may not be removed.

 */

#ifndef __FONTINSTANCEADAPTER_H

#define __FONTINSTANCEADAPTER_H

#include "LETypes.h"

#include "LEFontInstance.h"

#include "jni.h"

#include "sunfontids.h"

#include "fontscalerdefs.h"

#include <jni_util.h>

class FontInstanceAdapter : public LEFontInstance {

private:

    JNIEnv *env;

    jobject font2D;

    jobject fontStrike;

    float xppem;

    float yppem;

    float xScaleUnitsToPoints;

    float yScaleUnitsToPoints;

    float xScalePixelsToUnits;

    float yScalePixelsToUnits;

    le_int32 upem;

    float xPointSize, yPointSize;

    float txMat[4];

    float euclidianDistance(float a, float b);

    /* Table format is the same as defined in the truetype spec.

       Pointer can be NULL (e.g. for Type1 fonts). */

    TTLayoutTableCache* layoutTables;

public:

    FontInstanceAdapter(JNIEnv *env,

                        jobject theFont2D, jobject theFontStrike,

                        float *matrix, le_int32 xRes, le_int32 yRes,

                        le_int32 theUPEM, TTLayoutTableCache *ltables);

    virtual ~FontInstanceAdapter() { };

    virtual const LEFontInstance *getSubFont(const LEUnicode chars[],

                            le_int32 *offset, le_int32 limit,

                            le_int32 script, LEErrorCode &success) const {

      return this;

    }

    // tables are cached with the native font scaler data

    // only supports gsub, gpos, gdef, mort tables at present

    virtual const void *getFontTable(LETag tableTag) const;

    virtual void *getKernPairs() const {

        return layoutTables->kernPairs;

    }

    virtual void setKernPairs(void *pairs) const {

        layoutTables->kernPairs = pairs;

    }

    virtual le_bool canDisplay(LEUnicode32 ch) const

    {

        return  (le_bool)env->CallBooleanMethod(font2D,

                                                sunFontIDs.canDisplayMID, ch);

    };

    virtual le_int32 getUnitsPerEM() const {

       return upem;

    };

    virtual LEGlyphID mapCharToGlyph(LEUnicode32 ch, const LECharMapper *mapper) const;

    virtual LEGlyphID mapCharToGlyph(LEUnicode32 ch) const;

    virtual void mapCharsToWideGlyphs(const LEUnicode chars[],

        le_int32 offset, le_int32 count, le_bool reverse,

        const LECharMapper *mapper, le_uint32 glyphs[]) const;

    virtual le_uint32 mapCharToWideGlyph(LEUnicode32 ch,

        const LECharMapper *mapper) const;

    virtual void getGlyphAdvance(LEGlyphID glyph, LEPoint &advance) const;

    virtual void getKerningAdjustment(LEPoint &adjustment) const;

    virtual void getWideGlyphAdvance(le_uint32 glyph, LEPoint &advance) const;

    virtual le_bool getGlyphPoint(LEGlyphID glyph,

        le_int32 pointNumber, LEPoint &point) const;

    float getXPixelsPerEm() const

    {

        return xppem;

    };

    float getYPixelsPerEm() const

    {

        return yppem;

    };

    float xUnitsToPoints(float xUnits) const

    {

        return xUnits * xScaleUnitsToPoints;

    };

    float yUnitsToPoints(float yUnits) const

    {

        return yUnits * yScaleUnitsToPoints;

    };

    void unitsToPoints(LEPoint &units, LEPoint &points) const

    {

        points.fX = xUnitsToPoints(units.fX);

        points.fY = yUnitsToPoints(units.fY);

    }

    float xPixelsToUnits(float xPixels) const

    {

        return xPixels * xScalePixelsToUnits;

    };

    float yPixelsToUnits(float yPixels) const

    {

        return yPixels * yScalePixelsToUnits;

    };

    void pixelsToUnits(LEPoint &pixels, LEPoint &units) const

    {

        units.fX = xPixelsToUnits(pixels.fX);

        units.fY = yPixelsToUnits(pixels.fY);

    };

    virtual float getScaleFactorX() const {

        return xScalePixelsToUnits;

    };

    virtual float getScaleFactorY() const {

        return yScalePixelsToUnits;

    };

    void transformFunits(float xFunits, float yFunits, LEPoint &pixels) const;

    virtual le_int32 getAscent() const { return 0; };  // not used

    virtual le_int32 getDescent() const { return 0; }; // not used

    virtual le_int32 getLeading() const { return 0; }; // not used

};

#endif