001    /**
002     * ========================================
003     * JFreeReport : a free Java report library
004     * ========================================
005     *
006     * Project Info:  http://reporting.pentaho.org/
007     *
008     * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors.
009     *
010     * This library is free software; you can redistribute it and/or modify it under the terms
011     * of the GNU Lesser General Public License as published by the Free Software Foundation;
012     * either version 2.1 of the License, or (at your option) any later version.
013     *
014     * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
015     * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
016     * See the GNU Lesser General Public License for more details.
017     *
018     * You should have received a copy of the GNU Lesser General Public License along with this
019     * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
020     * Boston, MA 02111-1307, USA.
021     *
022     * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
023     * in the United States and other countries.]
024     *
025     * ------------
026     * $Id: ScalingExtendedDrawable.java 3525 2007-10-16 11:43:48Z tmorgner $
027     * ------------
028     * (C) Copyright 2000-2005, by Object Refinery Limited.
029     * (C) Copyright 2005-2007, by Pentaho Corporation.
030     */
031    package org.jfree.report.util;
032    
033    import java.awt.Dimension;
034    import java.awt.Graphics2D;
035    import java.awt.geom.Rectangle2D;
036    
037    import org.jfree.ui.ExtendedDrawable;
038    
039    /**
040     * Creation-Date: 20.01.2006, 19:46:10
041     *
042     * @author Thomas Morgner
043     */
044    public class ScalingExtendedDrawable implements ExtendedDrawable
045    {
046      private float scaleX;
047      private float scaleY;
048      private ExtendedDrawable drawable;
049    
050      public ScalingExtendedDrawable()
051      {
052        scaleX = 1;
053        scaleY = 1;
054      }
055    
056      public ExtendedDrawable getDrawable()
057      {
058        return drawable;
059      }
060    
061      public void setDrawable(final ExtendedDrawable drawable)
062      {
063        this.drawable = drawable;
064      }
065    
066      public float getScaleY()
067      {
068        return scaleY;
069      }
070    
071      public void setScaleY(final float scaleY)
072      {
073        this.scaleY = scaleY;
074      }
075    
076      public float getScaleX()
077      {
078        return scaleX;
079      }
080    
081      public void setScaleX(final float scaleX)
082      {
083        this.scaleX = scaleX;
084      }
085    
086      /**
087       * Returns the preferred size of the drawable. If the drawable is aspect ratio
088       * aware, these bounds should be used to compute the preferred aspect ratio
089       * for this drawable.
090       *
091       * @return the preferred size.
092       */
093      public Dimension getPreferredSize()
094      {
095        if (drawable == null)
096        {
097          return new Dimension(0,0);
098        }
099    
100        final Dimension dim = drawable.getPreferredSize();
101        if (dim == null)
102        {
103          return null;
104        }
105        dim.setSize(scaleX * dim.getWidth(), scaleY * dim.getHeight());
106        return dim;
107      }
108    
109      /**
110       * Returns true, if this drawable will preserve an aspect ratio during the
111       * drawing.
112       *
113       * @return true, if an aspect ratio is preserved, false otherwise.
114       */
115      public boolean isPreserveAspectRatio()
116      {
117        if (drawable == null)
118        {
119          return false;
120        }
121        return drawable.isPreserveAspectRatio();
122      }
123    
124      /**
125       * Draws the object.
126       *
127       * @param g2   the graphics device.
128       * @param area the area inside which the object should be drawn.
129       */
130      public void draw(final Graphics2D g2, final Rectangle2D area)
131      {
132        if (drawable == null)
133        {
134          return;
135        }
136        final Graphics2D derived = (Graphics2D) g2.create();
137        derived.scale(scaleX, scaleY);
138        final Rectangle2D scaledArea = (Rectangle2D) area.clone();
139        scaledArea.setRect(scaledArea.getX() * scaleX, scaledArea.getY() * scaleY,
140                scaledArea.getWidth() * scaleX, scaledArea.getHeight() * scaleY);
141        drawable.draw(derived, scaledArea);
142        derived.dispose();
143      }
144    }