/*

 * Copyright (c) 2000, 2011, 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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 */

package sun.java2d.pipe;

import java.awt.Font;

import java.awt.Rectangle;

import java.awt.Shape;

import java.awt.font.FontRenderContext;

import java.awt.font.GlyphVector;

import java.awt.font.TextLayout;

import sun.awt.SunHints;

import sun.java2d.SunGraphics2D;

import sun.java2d.SurfaceData;

import sun.font.GlyphList;

import sun.java2d.loops.FontInfo;

/**

 * A delegate pipe of SG2D for drawing text.

 */

public abstract class GlyphListPipe implements TextPipe {

    public void drawString(SunGraphics2D sg2d, String s,

                           double x, double y)

    {

        FontInfo info = sg2d.getFontInfo();

        if (info.pixelHeight > OutlineTextRenderer.THRESHHOLD) {

            SurfaceData.outlineTextRenderer.drawString(sg2d, s, x, y);

            return;

        }

        float devx, devy;

        if (sg2d.transformState >= SunGraphics2D.TRANSFORM_TRANSLATESCALE) {

            double origin[] = {x + info.originX, y + info.originY};

            sg2d.transform.transform(origin, 0, origin, 0, 1);

            devx = (float)origin[0];

            devy = (float)origin[1];

        } else {

            devx = (float)(x + info.originX + sg2d.transX);

            devy = (float)(y + info.originY + sg2d.transY);

        }

        /* setFromString returns false if shaping is needed, and we then back

         * off to a TextLayout. Such text may benefit slightly from a lower

         * overhead in this approach over the approach in previous releases.

         */

        GlyphList gl = GlyphList.getInstance();

        if (gl.setFromString(info, s, devx, devy)) {

            drawGlyphList(sg2d, gl);

            gl.dispose();

        } else {

            gl.dispose(); // release this asap.

            TextLayout tl = new TextLayout(s, sg2d.getFont(),

                                           sg2d.getFontRenderContext());

            tl.draw(sg2d, (float)x, (float)y);

        }

    }

    public void drawChars(SunGraphics2D sg2d,

                          char data[], int offset, int length,

                          int ix, int iy)

    {

        FontInfo info = sg2d.getFontInfo();

        float x, y;

        if (info.pixelHeight > OutlineTextRenderer.THRESHHOLD) {

            SurfaceData.outlineTextRenderer.drawChars(

                                        sg2d, data, offset, length, ix, iy);

            return;

        }

        if (sg2d.transformState >= SunGraphics2D.TRANSFORM_TRANSLATESCALE) {

            double origin[] = {ix + info.originX, iy + info.originY};

            sg2d.transform.transform(origin, 0, origin, 0, 1);

            x = (float) origin[0];

            y = (float) origin[1];

        } else {

            x = ix + info.originX + sg2d.transX;

            y = iy + info.originY + sg2d.transY;

        }

        GlyphList gl = GlyphList.getInstance();

        if (gl.setFromChars(info, data, offset, length, x, y)) {

            drawGlyphList(sg2d, gl);

            gl.dispose();

        } else {

            gl.dispose(); // release this asap.

            TextLayout tl = new TextLayout(new String(data, offset, length),

                                           sg2d.getFont(),

                                           sg2d.getFontRenderContext());

            tl.draw(sg2d, ix, iy);

        }

    }

    public void drawGlyphVector(SunGraphics2D sg2d, GlyphVector gv,

                                float x, float y)

    {

        FontRenderContext frc = gv.getFontRenderContext();

        FontInfo info = sg2d.getGVFontInfo(gv.getFont(), frc);

        if (info.pixelHeight > OutlineTextRenderer.THRESHHOLD) {

            SurfaceData.outlineTextRenderer.drawGlyphVector(sg2d, gv, x, y);

            return;

        }

        if (sg2d.transformState >= SunGraphics2D.TRANSFORM_TRANSLATESCALE) {

            double origin[] = {x, y};

            sg2d.transform.transform(origin, 0, origin, 0, 1);

            x = (float) origin[0];

            y = (float) origin[1];

        } else {

            x += sg2d.transX; // don't use the glyph info origin, already in gv.

            y += sg2d.transY;

        }

        GlyphList gl = GlyphList.getInstance();

        gl.setFromGlyphVector(info, gv, x, y);

        drawGlyphList(sg2d, gl, info.aaHint);

        gl.dispose();

    }

    protected abstract void drawGlyphList(SunGraphics2D sg2d, GlyphList gl);

    protected void drawGlyphList(SunGraphics2D sg2d, GlyphList gl,

                                 int aaHint) {

        drawGlyphList(sg2d, gl);

    }

}