/*
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 * or from the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * This program 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 Lesser General Public License for more details.
 *
 * Copyright (c) 2000 - 2009 Pentaho Corporation, Object Refinery Limited and Contributors.  All rights reserved.
 */

package org.pentaho.reporting.libraries.pixie.wmf;

import java.awt.Color;
import java.awt.Paint;
import java.awt.Rectangle;
import java.awt.TexturePaint;
import java.awt.image.BufferedImage;

/**
 * A Windows metafile logical brush object.
 */
public class MfLogBrush implements WmfObject
{
  private static final boolean WHITE = false;
  private static final boolean BLACK = true;

  private static final boolean[] IMG_HS_HORIZONTAL =
      {
          WHITE, WHITE, WHITE, WHITE, WHITE, WHITE, WHITE, WHITE,
          WHITE, WHITE, WHITE, WHITE, WHITE, WHITE, WHITE, WHITE,
          WHITE, WHITE, WHITE, WHITE, WHITE, WHITE, WHITE, WHITE,
          BLACK, BLACK, BLACK, BLACK, BLACK, BLACK, BLACK, BLACK,
          BLACK, BLACK, BLACK, BLACK, BLACK, BLACK, BLACK, BLACK,
          WHITE, WHITE, WHITE, WHITE, WHITE, WHITE, WHITE, WHITE,
          WHITE, WHITE, WHITE, WHITE, WHITE, WHITE, WHITE, WHITE,
          WHITE, WHITE, WHITE, WHITE, WHITE, WHITE, WHITE, WHITE,
      };

  private static final boolean[] IMG_HS_VERTICAL =
      {
          WHITE, WHITE, WHITE, BLACK, BLACK, WHITE, WHITE, WHITE,
          WHITE, WHITE, WHITE, BLACK, BLACK, WHITE, WHITE, WHITE,
          WHITE, WHITE, WHITE, BLACK, BLACK, WHITE, WHITE, WHITE,
          WHITE, WHITE, WHITE, BLACK, BLACK, WHITE, WHITE, WHITE,
          WHITE, WHITE, WHITE, BLACK, BLACK, WHITE, WHITE, WHITE,
          WHITE, WHITE, WHITE, BLACK, BLACK, WHITE, WHITE, WHITE,
          WHITE, WHITE, WHITE, BLACK, BLACK, WHITE, WHITE, WHITE,
          WHITE, WHITE, WHITE, BLACK, BLACK, WHITE, WHITE, WHITE,
      };

  private static final boolean[] IMG_HS_FDIAGONAL =
      {
          BLACK, BLACK, WHITE, WHITE, WHITE, WHITE, WHITE, WHITE,
          WHITE, BLACK, BLACK, WHITE, WHITE, WHITE, WHITE, WHITE,
          WHITE, WHITE, BLACK, BLACK, WHITE, WHITE, WHITE, WHITE,
          WHITE, WHITE, WHITE, BLACK, BLACK, WHITE, WHITE, WHITE,
          WHITE, WHITE, WHITE, WHITE, BLACK, BLACK, WHITE, WHITE,
          WHITE, WHITE, WHITE, WHITE, WHITE, BLACK, BLACK, WHITE,
          WHITE, WHITE, WHITE, WHITE, WHITE, WHITE, BLACK, BLACK,
          BLACK, WHITE, WHITE, WHITE, WHITE, WHITE, WHITE, BLACK,
      };

  private static final boolean[] IMG_HS_BDIAGONAL =
      {
          BLACK, WHITE, WHITE, WHITE, WHITE, WHITE, WHITE, BLACK,
          WHITE, WHITE, WHITE, WHITE, WHITE, WHITE, BLACK, BLACK,
          WHITE, WHITE, WHITE, WHITE, WHITE, BLACK, BLACK, WHITE,
          WHITE, WHITE, WHITE, WHITE, BLACK, BLACK, WHITE, WHITE,
          WHITE, WHITE, WHITE, BLACK, BLACK, WHITE, WHITE, WHITE,
          WHITE, WHITE, BLACK, BLACK, WHITE, WHITE, WHITE, WHITE,
          WHITE, BLACK, BLACK, WHITE, WHITE, WHITE, WHITE, WHITE,
          BLACK, BLACK, WHITE, WHITE, WHITE, WHITE, WHITE, WHITE,
      };

  private static final boolean[] IMG_HS_CROSS =
      {
          WHITE, WHITE, WHITE, BLACK, BLACK, WHITE, WHITE, WHITE,
          WHITE, WHITE, WHITE, BLACK, BLACK, WHITE, WHITE, WHITE,
          WHITE, WHITE, WHITE, BLACK, BLACK, WHITE, WHITE, WHITE,
          BLACK, BLACK, BLACK, BLACK, BLACK, BLACK, BLACK, BLACK,
          BLACK, BLACK, BLACK, BLACK, BLACK, BLACK, BLACK, BLACK,
          WHITE, WHITE, WHITE, BLACK, BLACK, WHITE, WHITE, WHITE,
          WHITE, WHITE, WHITE, BLACK, BLACK, WHITE, WHITE, WHITE,
          WHITE, WHITE, WHITE, BLACK, BLACK, WHITE, WHITE, WHITE,
      };

  private static final boolean[] IMG_HS_DIAGCROSS =
      {
          BLACK, BLACK, WHITE, WHITE, WHITE, WHITE, BLACK, BLACK,
          WHITE, BLACK, BLACK, WHITE, WHITE, BLACK, BLACK, WHITE,
          WHITE, WHITE, BLACK, BLACK, BLACK, BLACK, WHITE, WHITE,
          WHITE, WHITE, WHITE, BLACK, BLACK, WHITE, WHITE, WHITE,
          WHITE, WHITE, BLACK, BLACK, BLACK, BLACK, WHITE, WHITE,
          WHITE, BLACK, BLACK, WHITE, WHITE, BLACK, BLACK, WHITE,
          BLACK, BLACK, WHITE, WHITE, WHITE, WHITE, BLACK, BLACK,
          BLACK, WHITE, WHITE, WHITE, WHITE, WHITE, WHITE, BLACK,
      };

  public static final int COLOR_FULL_ALPHA = 0x00FFFFFF;

  // Brush styles.
  public static final int BS_SOLID = 0;
  public static final int BS_NULL = 1;
  public static final int BS_HATCHED = 2;
  public static final int BS_PATTERN = 3;
  public static final int BS_INDEXED = 4;
  public static final int BS_DIBPATTERN = 5;

  // Hatch styles.
  public static final int HS_HORIZONTAL = 0;
  public static final int HS_VERTICAL = 1;
  public static final int HS_FDIAGONAL = 2;
  public static final int HS_BDIAGONAL = 3;
  public static final int HS_CROSS = 4;
  public static final int HS_DIAGCROSS = 5;

  private int style;
  private Color color;
  private Color bgColor;
  private int hatch;
  private Paint lastPaint;
  private BufferedImage bitmap;

  /**
   * The default brush for a new DC.
   */
  public MfLogBrush()
  {
    style = BS_SOLID;
    color = Color.white;
    bgColor = new Color(COLOR_FULL_ALPHA);
    hatch = HS_HORIZONTAL;

  }

  public boolean isVisible()
  {
    return getStyle() != BS_NULL;
  }

  public int getType()
  {
    return OBJ_BRUSH;
  }

  /**
   * The style of this brush.
   */
  public int getStyle()
  {
    return style;
  }

  public void setStyle(final int style)
  {
    this.style = style;
  }

  /**
   * Return the color of the current brush, or null.
   */
  public Color getColor()
  {
    return color;
  }

  public void setColor(final Color color)
  {
    this.color = color;
    lastPaint = null;
  }

  /**
   * The hatch style of this brush.
   */
  public int getHatchedStyle()
  {
    return hatch;
  }

  public void setHatchedStyle(final int hstyle)
  {
    this.hatch = hstyle;
    lastPaint = null;
  }

  public Paint getPaint()
  {
    if (lastPaint != null)
    {
      return lastPaint;
    }

    switch (getStyle())
    {
      case BS_SOLID:
        lastPaint = getColor();
        break;
      case BS_NULL:
        lastPaint = new GDIColor(COLOR_FULL_ALPHA);
        break;
      case BS_HATCHED:
      {
        final BufferedImage image = createHatchStyle();
        lastPaint = new TexturePaint(image, new Rectangle(0, 0, image.getWidth(), image.getHeight()));
        break;
      }
      case BS_DIBPATTERN:
      {
        if (bitmap == null)
        {
          lastPaint = new GDIColor(COLOR_FULL_ALPHA);
        }
        else
        {
          lastPaint = new TexturePaint(bitmap, new Rectangle(0, 0, bitmap.getWidth(), bitmap.getHeight()));
        }
        break;
      }
      default:
      {
        // Unknown Paint Mode
        lastPaint = new GDIColor(COLOR_FULL_ALPHA);
      }
    }
    return lastPaint;
  }

  private BufferedImage createHatchStyle()
  {
    final int style = getHatchedStyle();

    final BufferedImage image = new BufferedImage(8, 8, BufferedImage.TYPE_INT_ARGB);
    switch (style)
    {
      case HS_HORIZONTAL:
        image.setRGB(0, 0, 8, 8, transform(IMG_HS_HORIZONTAL), 0, 8);
        break;
      case HS_VERTICAL:
        image.setRGB(0, 0, 8, 8, transform(IMG_HS_VERTICAL), 0, 8);
        break;
      case HS_FDIAGONAL:
        image.setRGB(0, 0, 8, 8, transform(IMG_HS_FDIAGONAL), 0, 8);
        break;
      case HS_BDIAGONAL:
        image.setRGB(0, 0, 8, 8, transform(IMG_HS_BDIAGONAL), 0, 8);
        break;
      case HS_CROSS:
        image.setRGB(0, 0, 8, 8, transform(IMG_HS_CROSS), 0, 8);
        break;
      case HS_DIAGCROSS:
        image.setRGB(0, 0, 8, 8, transform(IMG_HS_DIAGCROSS), 0, 8);
        break;
      default:
        throw new IllegalArgumentException();
    }
    return image;
  }

  public int[] transform(final boolean[] data)
  {
    final int color = getColor().getRGB();
    final int bgColor = getBackgroundColor().getRGB();

    final int[] retval = new int[data.length];
    for (int i = 0; i < retval.length; i++)
    {
      if (data[i] == true)
      {
        retval[i] = color;
      }
      else
      {
        retval[i] = bgColor;
      }
    }
    return retval;
  }

  public void setBackgroundColor(final Color bg)
  {
    this.bgColor = bg;
    lastPaint = null;
  }

  public Color getBackgroundColor()
  {
    return bgColor;
  }

  public void setBitmap(final BufferedImage bitmap)
  {
    this.bitmap = bitmap;
  }


  public BufferedImage getBitmap()
  {
    return bitmap;
  }
}