/*

 * Copyright (c) 1998, 2005, 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

 * questions.

 */

/*

 *

 * (C) Copyright IBM Corp. 1998, 1999 - All Rights Reserved

 */

package sun.font;

import java.awt.Font;

import java.awt.Graphics2D;

import java.awt.Rectangle;

import java.awt.Shape;

import java.awt.font.FontRenderContext;

import java.awt.font.GlyphVector;

import java.awt.geom.AffineTransform;

import java.awt.geom.Rectangle2D;

/**

 * Implementation of TextLabel based on String.

 */

public class TextSourceLabel extends TextLabel {

  TextSource source;

  // caches

  Rectangle2D lb;

  Rectangle2D ab;

  Rectangle2D vb;

  Rectangle2D ib;

  GlyphVector gv;

  public TextSourceLabel(TextSource source) {

    this(source, null, null, null);

  }

  public TextSourceLabel(TextSource source, Rectangle2D lb, Rectangle2D ab, GlyphVector gv) {

    this.source = source;

    this.lb = lb;

    this.ab = ab;

    this.gv = gv;

  }

  public TextSource getSource() {

    return source;

  }

  public final Rectangle2D getLogicalBounds(float x, float y) {

    if (lb == null) {

      lb = createLogicalBounds();

    }

    return new Rectangle2D.Float((float)(lb.getX() + x),

                                 (float)(lb.getY() + y),

                                 (float)lb.getWidth(),

                                 (float)lb.getHeight());

  }

  public final Rectangle2D getVisualBounds(float x, float y) {

    if (vb == null) {

      vb = createVisualBounds();

    }

    return new Rectangle2D.Float((float)(vb.getX() + x),

                                 (float)(vb.getY() + y),

                                 (float)vb.getWidth(),

                                 (float)vb.getHeight());

  }

  public final Rectangle2D getAlignBounds(float x, float y) {

    if (ab == null) {

      ab = createAlignBounds();

    }

    return new Rectangle2D.Float((float)(ab.getX() + x),

                                 (float)(ab.getY() + y),

                                 (float)ab.getWidth(),

                                 (float)ab.getHeight());

  }

  public Rectangle2D getItalicBounds(float x, float y) {

    if (ib == null) {

      ib = createItalicBounds();

    }

    return new Rectangle2D.Float((float)(ib.getX() + x),

                                 (float)(ib.getY() + y),

                                 (float)ib.getWidth(),

                                 (float)ib.getHeight());

  }

  public Rectangle getPixelBounds(FontRenderContext frc, float x, float y) {

      return getGV().getPixelBounds(frc, x, y); // no cache

  }

  public AffineTransform getBaselineTransform() {

      Font font = source.getFont();

      if (font.hasLayoutAttributes()) {

          return AttributeValues.getBaselineTransform(font.getAttributes());

      }

      return null;

  }

  public Shape getOutline(float x, float y) {

    return getGV().getOutline(x, y);

  }

  public void draw(Graphics2D g, float x, float y) {

    g.drawGlyphVector(getGV(), x, y);

  }

  protected Rectangle2D createLogicalBounds() {

    return getGV().getLogicalBounds();

  }

  protected Rectangle2D createVisualBounds() {

    return getGV().getVisualBounds();

  }

  protected Rectangle2D createItalicBounds() {

      // !!! fix

    return getGV().getLogicalBounds();

  }

  protected Rectangle2D createAlignBounds() {

    return createLogicalBounds();

  }

  private final GlyphVector getGV() {

    if (gv == null) {

      gv = createGV();

    }

    return gv;

  }

  protected GlyphVector createGV() {

    Font font = source.getFont();

    FontRenderContext frc = source.getFRC();

    int flags = source.getLayoutFlags();

    char[] context = source.getChars();

    int start = source.getStart();

    int length = source.getLength();

    GlyphLayout gl = GlyphLayout.get(null); // !!! no custom layout engines

    StandardGlyphVector gv = gl.layout(font, frc, context, start, length,

                                       flags, null); // ??? use textsource

    GlyphLayout.done(gl);

    return gv;

  }

}