Attachment 260339 Details for Bug 489741 – Example to draw an SWT image

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Example to draw an SWT image

DrawImageDraw2D.java (text/x-java-source), 2.55 KB, created by Baha Elkassaby

on 2016-03-16 08:26:00 EDT

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Filename:

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Creator: Baha Elkassaby

Created: 2016-03-16 08:26:00 EDT

Size: 2.55 KB

patch

obsolete

>import org.eclipse.draw2d.Figure;
>import org.eclipse.draw2d.FigureCanvas;
>import org.eclipse.draw2d.Graphics;
>import org.eclipse.draw2d.SWTGraphics;
>import org.eclipse.draw2d.geometry.Rectangle;
>import org.eclipse.swt.SWT;
>import org.eclipse.swt.events.KeyEvent;
>import org.eclipse.swt.events.KeyListener;
>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.layout.FillLayout;
>import org.eclipse.swt.widgets.Canvas;
>import org.eclipse.swt.widgets.Display;
>import org.eclipse.swt.widgets.Shell;
>
>public class DrawImageDraw2D extends Figure {
>	final static Display display = new Display();
>
>	public static void main(String[] args) {
>		int w = 350, h = 200;
>		final Shell shell = new Shell(display);
>		shell.setSize(w, h);
>		shell.setLayout(new FillLayout());
>		final FigureCanvas canvas = new FigureCanvas(shell);
>		final DrawImageDraw2D f = new DrawImageDraw2D();
>		canvas.setContents(f);
>		canvas.addKeyListener(new KeyListener() {
>
>			@Override
>			public void keyReleased(KeyEvent e) {
>			}
>
>			@Override
>			public void keyPressed(KeyEvent e) {
>				if (e.keyCode == SWT.ESC) {
>					f.saveImage(shell, canvas);
>					shell.close();
>				}
>			}
>		});
>
>		shell.open();
>
>		while (!shell.isDisposed()) {
>			if (!display.readAndDispatch())
>				display.sleep();
>		}
>		display.dispose();
>	}
>
>	private void saveImage(Shell shell, Canvas canvas) {
>		org.eclipse.swt.graphics.Rectangle bnds = shell.getBounds();
>		Shell nShell = new Shell(display);
>		nShell.setBounds(bnds);
>
>		Image image = new Image(display, bnds.width, bnds.height);
>		GC gc = new GC(image);
>		GC fgc = new GC(canvas);
>		gc.setBackground(fgc.getBackground());
>		gc.setForeground(fgc.getForeground());
>		gc.setAdvanced(fgc.getAdvanced());
>
>		SWTGraphics g = new SWTGraphics(gc);
>		// fixes empty draw problem, that line is not needed if not on GTK2
>		g.setClip(new Rectangle(0, 0, bnds.width, bnds.height));
>		setBounds(new Rectangle(0, 0, bnds.width, bnds.height));
>//		layout();
>		paint(g);
>
>		ImageLoader loader = new ImageLoader();
>		loader.data = new ImageData[] {image.getImageData()};
>		loader.save("/tmp/draw2d.png", SWT.IMAGE_PNG);
>
>		g.dispose();
>		gc.dispose();
>		image.dispose();
>	}
>
>	@Override
>	protected void paintFigure(Graphics g) {
>		Rectangle bnds = getBounds();
>		int x = bnds.x;
>		int y = bnds.y;
>		int w = bnds.width;
>		int h = bnds.height;
>		g.setForegroundColor(display.getSystemColor(SWT.COLOR_RED));
>		g.setLineWidth(10);
>		g.drawLine(x, y, x + w, y + h);
>		g.drawLine(x + w, y, x, y + h);
>	}
>}

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Attachments on bug 489741: 260339