Draw string and process newlines and expanding tabs: drawText(String text, int x, int y, boolean isTransparent) : Draw String « SWT 2D Graphics « Java Tutorial






void drawText(String text, int x, int y, boolean isTransparent)

If isTransparent is true, GC will use a transparent background, allowing the original background to show through. Otherwise, GC uses an opaque background.

Draw string and process newlines and expanding tabs: drawText(String text, int x, int y, boolean isTransparent)
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 DrawingProcessNewLine {
  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.drawText("www.\njava2s\t.com", 5, 5,true);
        e.gc.drawText("www.\njava2s\t.com", 5, 55,false);

      }
    });

    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    display.dispose();
  }
}








18.14.Draw String
18.14.1.Draw string and display newlines and tabs as nonprintable characters.Draw string and display newlines and tabs as nonprintable characters.
18.14.2.String with new line and tabString with new line and tab
18.14.3.Draw string and display newlines and tabs as nonprintable characters: isTransparentDraw string and display newlines and tabs as nonprintable characters: isTransparent
18.14.4.Draw string and process newlines and expanding tabs: drawText(String text, int x, int y)Draw string and process newlines and expanding tabs: drawText(String text, int x, int y)
18.14.5.Draw string and process newlines and expanding tabs: drawText(String text, int x, int y, boolean isTransparent)Draw string and process newlines and expanding tabs: drawText(String text, int x, int y, boolean isTransparent)
18.14.6.Draw string and processing newlines and expanding tabsDraw string and processing newlines and expanding tabs
18.14.7.Get the extent of a string
18.14.8.Measure a String