Export full scrolled composite image to image
I want to export a full scrolled composite to an image. I mean the entire composition, not just the visible area of the composite. I found this example:
Image drawable = new Image(display, someComposite.getBounds());
GC gc = new GC(drawable);
mainWidget.print(gc);
ImageLoader loader = new ImageLoader();
loader.data = new ImageData[] {drawable.getImageData()};
loader.save("exportedImage.bmp", SWT.IMAGE_BMP);
drawable.dispose();
gc.dispose();
but the output is the visible area of the scrolled composite. :( and not all of that, I think it's because of the method .getBound()
, but I can't find a way to switch it to another method. I tried .getClientArea()
it but it didn't work ...
Thanks in advance, Yossi.
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1 answer
I found an example and changed some things - just copy and paste it:
import org.eclipse.swt.*;
import org.eclipse.swt.custom.ScrolledComposite;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.ImageLoader;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.*;
public class ScroledCompositeExport {
public static void main (String [] args) {
final Display display = new Display ();
Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
shell.setSize(200, 200);
shell.setLocation(20, 20);
final ScrolledComposite sc = new ScrolledComposite(shell, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL);
sc.setLayout(new GridLayout(1,true));
final Composite innerComposite = new Composite(sc, SWT.NONE);
innerComposite.setSize(400, 400);
innerComposite.setLayout(new GridLayout(1, true));
innerComposite.setBackground(new Color(display, 255, 0, 0));
for(int i = 0; i < 10; i++)
{
Button b = new Button(innerComposite, SWT.PUSH);
b.setText("Text");
b.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e)
{
Image image = new Image(display, innerComposite.getBounds().width, innerComposite.getBounds().height);
ImageLoader loader = new ImageLoader();
GC gc = new GC(image);
innerComposite.print(gc);
gc.dispose();
loader.data = new ImageData[]{image.getImageData()};
loader.save("c:/temp/out.png", SWT.IMAGE_PNG);
}
});
}
sc.setMinSize(innerComposite.computeSize(SWT.DEFAULT, SWT.DEFAULT));
sc.setContent(innerComposite);
sc.setExpandHorizontal(true);
sc.setExpandVertical(true);
shell.open();
shell.open ();
while (!shell.isDisposed()) {
if (!display.readAndDispatch ()) display.sleep ();
}
display.dispose ();
}
}
It works :) and might be a good place to start.
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