Java Tutorial/SWT/Device

17. List the display"s boundaries, client area

Device represents a physical device. It"s an abstract class, and has two concrete subclasses: Display and Printer.

import org.eclipse.swt.graphics.Device;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class DeviceDisplayBoundary {
  public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display);
    Device device = shell.getDisplay();
    
    System.out.println("getBounds(): "+ device.getBounds());
    System.out.println("getClientArea(): " +device.getClientArea());
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    display.dispose();
  }
}

17. List the display"s color depth, DPI

import org.eclipse.swt.graphics.Device;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class DeviceDPI {
  public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display);
    Device device = shell.getDisplay();
    System.out.println("getDepth(): " + device.getDepth());
    System.out.println("getDPI(): " + device.getDPI());
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    display.dispose();
  }
}

17. Whether or not it supports printing warnings

import org.eclipse.swt.graphics.Device;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class PrintWarning {
  public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display);
    Device device = shell.getDisplay();
    // By setting warnings to true and then getting warnings, we know if the
    // current platform supports it
    device.setWarnings(true);
    System.out.println("Warnings supported: " + device.getWarnings());
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    display.dispose();
  }
}