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//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\
// \\
// Centre for Speech Technology Research \\
// University of Edinburgh, UK \\
// Copyright (c) 1996,1997 \\
// All Rights Reserved. \\
// Permission is hereby granted, free of charge, to use and distribute \\
// this software and its documentation without restriction, including \\
// without limitation the rights to use, copy, modify, merge, publish, \\
// distribute, sublicense, and/or sell copies of this work, and to \\
// permit persons to whom this work is furnished to do so, subject to \\
// the following conditions: \\
// 1. The code must retain the above copyright notice, this list of \\
// conditions and the following disclaimer. \\
// 2. Any modifications must be clearly marked as such. \\
// 3. Original authors' names are not deleted. \\
// 4. The authors' names are not used to endorse or promote products \\
// derived from this software without specific prior written \\
// permission. \\
// THE UNIVERSITY OF EDINBURGH AND THE CONTRIBUTORS TO THIS WORK \\
// DISCLAIM ALL WARRANTIES With REGARD TO THIS SOFTWARE, INCLUDING \\
// ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT \\
// SHALL THE UNIVERSITY OF EDINBURGH NOR THE CONTRIBUTORS BE LIABLE \\
// FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES \\
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN \\
// AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, \\
// ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF \\
// THIS SOFTWARE. \\
// \\
//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\
// \\
// Author: Richard Caley (rjc@cstr.ed.ac.uk) \\
// Date: Thu Apr 9 1998 \\
// -------------------------------------------------------------------- \\
package cstr.awt;
import java.util.*;
import java.lang.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
public class ImageCanvas extends Canvas
{
Image image;
int pwidth, pheight;
private void init(Image im, double xscale, double yscale)
{
pwidth = (int)(im.getWidth(this)*xscale);
pheight = (int)(im.getHeight(this)*yscale);
if (xscale != 1.0 || yscale != 1.0)
{
ImageFilter filter = new ReplicateScaleFilter(pwidth, pheight);
image = createImage(new FilteredImageSource(im.getSource(), filter));
}
else
image = im;
}
public ImageCanvas(Image touse, double xscale, double yscale)
{
super();
init(touse, xscale, yscale);
}
public ImageCanvas(ImageProducer prod, double xscale, double yscale)
{
super();
init(createImage(prod), xscale, yscale);
}
public ImageCanvas(Image touse, double scale)
{
super();
init(touse, scale, scale);
}
public ImageCanvas(ImageProducer prod, double scale)
{
super();
init(createImage(prod), scale, scale);
}
public ImageCanvas(Image touse)
{
super();
init(touse, 1.0, 1.0);
}
public ImageCanvas(ImageProducer prod)
{
super();
init(createImage(prod), 1.0, 1.0);
}
public boolean imageUpdate(Image img,
int flags,
int x,
int y,
int w,
int h)
{
int oh =pheight;
int ow = pwidth;
if ((flags & ImageObserver.WIDTH) != 0)
pwidth = w;
if ((flags & ImageObserver.HEIGHT) != 0 )
pheight = h;
if (pwidth!= ow || pheight != oh)
setSize(pwidth, pheight);
repaint();
return !((flags & ImageObserver.ALLBITS) != 0);
}
public Dimension getPreferredSize()
{
return new Dimension(pwidth, pheight);
}
public Dimension getMinimumSize()
{
return new Dimension(pwidth, pheight);
}
public void update(Graphics g)
{
paint(g);
}
public void paint(Graphics g)
{
g.drawImage(image, 0, 0, pwidth, pheight, this);
}
}
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