Set icons with different resolutions : Shell « SWT « Java Tutorial





/*******************************************************************************
 * Copyright (c) 2000, 2004 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
//package org.eclipse.swt.snippets;
/*
 * example snippet: set icons with different resolutions
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 * 
 * @since 3.0
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class IconResolutions {
  public static void main(String[] args) {
    Display display = new Display();

    Image small = new Image(display, 16, 16);
    GC gc = new GC(small);
    gc.setBackground(display.getSystemColor(SWT.COLOR_RED));
    gc.fillArc(0, 0, 16, 16, 45, 270);
    gc.dispose();

    Image large = new Image(display, 32, 32);
    gc = new GC(large);
    gc.setBackground(display.getSystemColor(SWT.COLOR_RED));
    gc.fillArc(0, 0, 32, 32, 45, 270);
    gc.dispose();

    /*
     * Provide different resolutions for icons to get high quality rendering
     * wherever the OS needs large icons. For example, the ALT+TAB window on
     * certain systems uses a larger icon.
     */
    Shell shell = new Shell(display);
    shell.setText("Small and Large icons");
    shell.setImages(new Image[] { small, large });

    /*
     * No large icon: the OS will scale up the small icon when it needs a large
     * one.
     */
    Shell shell2 = new Shell(display);
    shell2.setText("Small icon");
    shell2.setImage(small);

    shell.open();
    shell2.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    small.dispose();
    large.dispose();
    display.dispose();
  }
}










17.4.Shell
17.4.1.Understanding the Shell Object
17.4.2.Creating Shells
17.4.3.Open a shell minimized (iconified)
17.4.4.Open a shell maximized (full screen)
17.4.5.Center a shell on the primary monitorCenter a shell on the primary monitor
17.4.6.Set icons with different resolutions
17.4.7.Create a non-rectangular windowCreate a non-rectangular window
17.4.8.Create a non-rectangular shell to simulate transparencyCreate a non-rectangular shell to simulate transparency
17.4.9.Create non-rectangular shell from an image with transparencyCreate non-rectangular shell from an image with transparency
17.4.10.Allow escape to close a shellAllow escape to close a shell
17.4.11.Prevent a shell from closing (prompt the user)Prevent a shell from closing (prompt the user)
17.4.12.Create GC from Shell and paint on windowCreate GC from Shell and paint on window
17.4.13.Getting Controls on a shellGetting Controls on a shell
17.4.14.Set default Button for ShellSet default Button for Shell
17.4.15.Get Default ButtonGet Default Button
17.4.16.Shell with SWT.SHELL_TRIM|SWT.TOOL styleShell with SWT.SHELL_TRIM|SWT.TOOL style
17.4.17.Ring ShellRing Shell
17.4.18.Set left upper corner imageSet left upper corner image
17.4.19.Shell without Title bar
17.4.20.ON_TOP: This style bit causes the shell to always float on the top of the desktop.
17.4.21.SHELL_TRIM = (CLOSE | TITLE | MIN | MAX | RESIZE): top-level shells.SHELL_TRIM = (CLOSE | TITLE | MIN | MAX | RESIZE): top-level shells.
17.4.22.DIALOG_TRIM = (CLOSE | TITLE | BORDER): dialog shells.
17.4.23.The modal state of shells: APPLICATION_MODAL, MODELESS, PRIMARY_MODAL, SYSTEM_MODAL
17.4.24.TOOL: the shell is a tool window(floating toolbars)
17.4.25.Shell States
17.4.26.Setting the Title