Attachment 50385 Details for Bug 152555 – Piece of code that makes the bug appear

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Piece of code that makes the bug appear

AlphablendingBug.java (text/plain), 2.57 KB, created by cricri

on 2006-09-18 11:17:14 EDT

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Creator: cricri

Created: 2006-09-18 11:17:14 EDT

Size: 2.57 KB

patch

obsolete

>package src;
>
>
>import org.eclipse.draw2d.ColorConstants;
>import org.eclipse.draw2d.Figure;
>import org.eclipse.draw2d.Graphics;
>import org.eclipse.draw2d.LightweightSystem;
>import org.eclipse.draw2d.LineBorder;
>import org.eclipse.draw2d.MouseEvent;
>import org.eclipse.draw2d.ScalableFreeformLayeredPane;
>import org.eclipse.draw2d.XYLayout;
>import org.eclipse.draw2d.geometry.Rectangle;
>import org.eclipse.swt.widgets.Display;
>import org.eclipse.swt.widgets.Shell;
>
>public class AlphablendingBug {
>	public static void main(String[] args) {
>		Display d = new Display();
>		final Shell shell = new Shell(d);
>		LightweightSystem lws = new LightweightSystem(shell);
>		ScalableFreeformLayeredPane contents = new ScalableFreeformLayeredPane(); // Simulates what we have with a ScalableRootEditPart
>		
>		XYLayout contentsLayout = new XYLayout();
>		
>		shell.setSize(400,400);
>		shell.setText("Hosting Shell");
>		
>		contents.setLayoutManager(contentsLayout);
>		contents.setScale(1.5); // Works if set to 1.0
>		
>		ToggleFigure foo1 = new ToggleFigure();
>		contentsLayout.setConstraint(foo1, new Rectangle(10, 10, 100, 100));
>		contents.add(foo1);
>		
>		ToggleFigure foo2 = new ToggleFigure();
>		contentsLayout.setConstraint(foo2, new Rectangle(109, 10, 100, 100)); // Both figures must have a common border
>		contents.add(foo2);
>		
>		lws.setContents(contents);
>		shell.open();
>		while(! shell.isDisposed()) {
>			while(! d.readAndDispatch())
>				d.sleep();
>		}
>	}
>}
>
>class ToggleFigure extends Figure {
>    public ToggleFigure () {
>        setForegroundColor(ColorConstants.red);
>        setBackgroundColor(ColorConstants.lightGray);
>        setBorder(new LineBorder());
>        setOpaque(false);
>    }
>
>    @Override
>    protected boolean isMouseEventTarget() {
>        return true;
>    }
>
>    @Override
>     public void handleMousePressed(MouseEvent event) {
>        setOpaque(! isOpaque());
>     }
>
>    @Override
>    public void paintFigure(Graphics graphics) {
>        graphics.setAlpha(100);
>        if(isOpaque())
>        	graphics.fillRectangle(bounds);
>        graphics.translate(bounds.x, bounds.y);
>        graphics.drawString("Text", 0, 0);
>    }
>    
>    /*** SWAPPING DRAWTEXT AND FILLRECTANGLE SOLVES THE PROBLEM: ***/
>    
>    /*
>    @Override
>    public void paintFigure(Graphics graphics) {
>       graphics.translate(bounds.x, bounds.y);
>       graphics.drawString("Text", 0, 0);
>       graphics.translate(-bounds.x, -bounds.y);
>       graphics.setAlpha(100);
>       if(isOpaque())
>        	graphics.fillRectangle(bounds);
>    }
>    */
>}

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Attachments on bug 152555: 50385