GC: drawPolygon(int[] pointArray) : GC « org.eclipse.swt.graphics « Java by API

1. Java by API
2. org.eclipse.swt.graphics
3. GC

GC: drawPolygon(int[] pointArray)

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
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 MainClass {

  public static void main(String[] a) {

    final Display d = new Display();
    final Shell shell = new Shell(d);

    shell.setSize(250, 200);

    shell.setLayout(new FillLayout());

    // Create a canvas
    Canvas canvas = new Canvas(shell, SWT.NONE);

    canvas.addPaintListener(new PaintListener() {
      public void paintControl(PaintEvent e) {
        Canvas canvas = (Canvas) e.widget;
        int x = canvas.getBounds().width;
        int y = canvas.getBounds().height;

        e.gc.setBackground(e.display.getSystemColor(SWT.COLOR_BLACK));

        int[] upper_left = { 0, 0, 200, 0, 0, 200};

        int[] lower_right = { x, y, x, y - 200, x - 200, y};

        e.gc.fillPolygon(upper_left);
        e.gc.fillPolygon(lower_right);
        
      }
    });    
    
    
    shell.open();
    while (!shell.isDisposed()) {
      if (!d.readAndDispatch())
        d.sleep();
    }
    d.dispose();
  }
}

           
       

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