| ZoomExample with ImageFigure [message #246955] |
Wed, 21 January 2009 06:17 |
 Shawn Spiars
Messages: 16
Registered: July 2009 |
Junior Member |
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I'm trying to get the ZoomExample to work with an ImageFigure which
contains a rather large jpg image (2700 X 4300 pixels). The image shows
up but it's too large and since there are no scroll bars the image is
truncated. I'd like to get the image to start out at a smaller scale. I
tried to attach the image here, but it's too large for the newsgroup.
Any help would be appreciated.
Thanks,
Shawn
package org.eclipse.draw2d.examples.zoom;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import org.eclipse.draw2d.ButtonBorder;
import org.eclipse.draw2d.Figure;
import org.eclipse.draw2d.GroupBoxBorder;
import org.eclipse.draw2d.ImageFigure;
import org.eclipse.draw2d.Label;
import org.eclipse.draw2d.LightweightSystem;
import org.eclipse.draw2d.SchemeBorder;
import org.eclipse.draw2d.ScrollBar;
import org.eclipse.draw2d.ToolbarLayout;
import org.eclipse.draw2d.XYLayout;
import org.eclipse.draw2d.geometry.Dimension;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class ZoomImageExample {
private static Figure contents;
public static void main(String args[]){
Display d = new Display();
final Shell shell = new Shell(d);
shell.setSize(800, 800);
LightweightSystem lws = new LightweightSystem(shell);
Figure fig = new Figure();
fig.setLayoutManager(new ToolbarLayout());
final ScrollBar bar = new ScrollBar();
final Label l = new Label("«Zoom»");
l.setBorder(new SchemeBorder(ButtonBorder.SCHEMES.BUTTON_SCROLLBAR));
bar.setThumb(l);
bar.setHorizontal(true);
bar.setMaximum(200);
bar.setMinimum(0);
bar.setExtent(25);
final ZoomContainer panel = new ZoomContainer();
panel.setBorder(new GroupBoxBorder("Zooming figure"));
panel.setMinimumSize(new Dimension(5,5));
panel.setPreferredSize(500, 500);
fig.add(bar);
fig.add(panel);
bar.addPropertyChangeListener("value", new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent evt) {
float z = (bar.getValue()+10) * 0.02f;
panel.setZoom(z);
}
});
panel.add(getContents());
bar.setValue(40);
lws.setContents(fig);
shell.open();
while (!shell.isDisposed())
while (!d.readAndDispatch())
d.sleep();
}
protected static Figure getContents() {
if (contents == null)
contents = createContents();
return contents;
}
private static Figure createContents() {
Figure contents = new Figure();
XYLayout layout = new XYLayout();
contents.setLayoutManager(layout);
String path = "c:/dev/page.jpg";
Image image = new Image(Display.getDefault(), path);
ImageFigure imageFigure = new ImageFigure(image);
layout.setConstraint(imageFigure, new Rectangle(0,0,-1,-1));
contents.add(imageFigure);
return contents;
}
}
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