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1   // Copyright 2002, FreeHEP.
2   package org.freehep.graphicsio.emf.gdi;
3   
4   import java.awt.Point;
5   import java.io.IOException;
6   
7   import org.freehep.graphicsio.emf.EMFInputStream;
8   import org.freehep.graphicsio.emf.EMFOutputStream;
9   import org.freehep.graphicsio.emf.EMFTag;
10  import org.freehep.graphicsio.emf.EMFRenderer;
11  
12  /**
13   * SetWindowOrgEx TAG.
14   * 
15   * @author Mark Donszelmann
16   * @version $Id: SetWindowOrgEx.java 10367 2007-01-22 19:26:48Z duns $
17   */
18  public class SetWindowOrgEx extends EMFTag {
19  
20      private Point point;
21  
22      public SetWindowOrgEx() {
23          super(10, 1);
24      }
25  
26      public SetWindowOrgEx(Point point) {
27          this();
28          this.point = point;
29      }
30  
31      public EMFTag read(int tagID, EMFInputStream emf, int len)
32              throws IOException {
33  
34          return new SetWindowOrgEx(emf.readPOINTL());
35      }
36  
37      public void write(int tagID, EMFOutputStream emf) throws IOException {
38          emf.writePOINTL(point);
39      }
40  
41      public String toString() {
42          return super.toString() + "\n  point: " + point;
43      }
44  
45      /**
46       * displays the tag using the renderer
47       *
48       * @param renderer EMFRenderer storing the drawing session data
49       */
50      public void render(EMFRenderer renderer) {
51          // The SetWindowOrgEx function specifies which window point maps to
52          // the window origin (0,0).
53          renderer.setWindowOrigin(point);
54          renderer.resetTransformation();
55      }
56  }