Re: Live lens cursor?

Posted by Jerome Mutterer on Dec 09, 2005; 3:34pm
URL: http://imagej.273.s1.nabble.com/Live-lens-cursor-tp3704274p3704276.html

I have done just that. The code is included below.
It is not a fast method, so you're supposed to click
the mouse to have the zoom updated.



Le 9 déc. 05 à 16:02, Bill Christens-Barry a écrit :
>  I wonder if the method demo'd by Wayne in his Graphic_Overlay  
> plugin would be fast
> enough for repainting as the mouse is moved.


Jerome

Graphic_Overlay_mod.java

import ij.plugin.*;
import ij.*;
import ij.gui.*;
import ij.process.*;
import java.awt.*;
import java.awt.image.*;
import java.awt.event.*;
public class Graphic_Overlay_mod implements PlugIn {
      public void run(String arg) {
          ImagePlus imp = IJ.getImage();
          CustomCanvas cc = new CustomCanvas(imp);
          if (imp.getStackSize()>1)
              new StackWindow(imp, cc);
          else
             new ImageWindow(imp, cc);}
      class CustomCanvas extends ImageCanvas {
          int xpos =100;
     int ypos =200;
     int size =40;
     CustomCanvas(ImagePlus imp) {
                      super(imp);
              }
             public void paint(Graphics g) {
                      super.paint(g);
                      drawOverlay(g);
               }
             void drawOverlay(Graphics g) {
                 g.setColor(Color.red);
             g.drawRect(xpos,ypos,size,size);
                 ImagePlus im2 = imp;
                 g.drawImage(imp.getImage(),xpos-50,ypos-50,xpos
+50,ypos+50,xpos-25,ypos-25,xpos+25,ypos+25,this);
             }
              public void mousePressed(MouseEvent e) {
                      super.mousePressed(e);
                      if (e.isAltDown()) {
                 xpos = -100;
                 ypos = -100;
                         return;
             }
                 xpos = offScreenX(e.getX());
                 ypos = offScreenY(e.getY());
                 }
      }
}