public BufferedImage image;
- public BufferedImage fadedImage;
+ public volatile BufferedImage fadedImage;
Graphics2D gg;
}
}
-
+ private volatile boolean imageFresh=false;
/**
* DOCUMENT ME!
*
fm = gg.getFontMetrics();
gg.setColor(Color.white);
gg.fillRect(0, 0, imgWidth, image.getHeight());
+ imageFresh=true;
}
drawComponent(gg, av.startRes, av.endRes + 1);
+ imageFresh=false;
g.drawImage(image, 0, 0, this);
}
repaint();
}
-
+ private volatile boolean lastImageGood=false;
/**
* DOCUMENT ME!
*
*/
public void drawComponent(Graphics g, int startRes, int endRes)
{
+ BufferedImage oldFaded=fadedImage;
if (av.isCalcInProgress())
{
if (image == null)
{
+ lastImageGood=false;
return;
}
// We'll keep a record of the old image,
// and draw a faded image until the calculation
// has completed
- if (fadedImage == null || fadedImage.getWidth() != imgWidth
- || fadedImage.getHeight() != image.getHeight())
+ if (lastImageGood && (fadedImage == null || fadedImage.getWidth() != imgWidth
+ || fadedImage.getHeight() != image.getHeight()))
{
+// System.err.println("redraw faded image ("+(fadedImage==null ? "null image" : "") + " lastGood="+lastImageGood+")");
fadedImage = new BufferedImage(imgWidth, image.getHeight(),
BufferedImage.TYPE_INT_RGB);
fadedG.drawImage(image, 0, 0, this);
}
+ // make sure we don't overwrite the last good faded image until all calculations have finished
+ lastImageGood=false;
}
else
{
+ if (fadedImage!=null)
+ {
+ oldFaded=fadedImage;
+ }
fadedImage = null;
}
return;
}
- renderer.drawComponent(this, av, g, activeRow, startRes, endRes);
+ lastImageGood = renderer.drawComponent(this, av, g, activeRow, startRes, endRes);
+ if (!lastImageGood && fadedImage==null)
+ {
+ fadedImage=oldFaded;
+ }
}
@Override