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| 18. 14. 3. Draw string and display newlines and tabs as nonprintable characters: isTransparent |
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void drawString(String string, int x, int y, boolean isTransparent)
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If isTransparent is true, GC will use a transparent background, allowing the original background to show through.
Otherwise, GC will use an opaque background. |
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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 DrawStringTransparent {
public static void main(String[] args) {
final Display display = new Display();
Shell shell = new Shell(display);
shell.setText("Canvas Example");
shell.setLayout(new FillLayout());
Canvas canvas = new Canvas(shell, SWT.NONE);
canvas.addPaintListener(new PaintListener() {
public void paintControl(PaintEvent e) {
e.gc.drawString("www.\njava2s\t.com", 5, 5, true);
e.gc.drawString("www.\njava2s\t.com", 5, 55, false);
}
});
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();
}
}
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