org.eclipse.swt.snippets.Snippet333.java Source code

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Here is the source code for org.eclipse.swt.snippets.Snippet333.java

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/*******************************************************************************
 * Copyright (c) 2000, 2016 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.snippets;

/*
 * SWT skin snippet: Listen for and print out skin events
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 *
 * @since 3.6
 */
import static org.eclipse.swt.events.SelectionListener.*;

import java.util.*;

import org.eclipse.swt.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

public class Snippet333 {

    static final int colors[] = { SWT.COLOR_RED, SWT.COLOR_MAGENTA, SWT.COLOR_GREEN, SWT.COLOR_YELLOW,
            SWT.COLOR_BLUE, SWT.COLOR_CYAN, SWT.COLOR_DARK_RED, SWT.COLOR_DARK_MAGENTA, SWT.COLOR_DARK_GREEN,
            SWT.COLOR_DARK_YELLOW, SWT.COLOR_DARK_BLUE, SWT.COLOR_DARK_CYAN };

    public static void main(String[] arg) {
        Display display = new Display();
        final Shell shell = new Shell(display);
        shell.setText("Skin example");
        shell.setLayout(new GridLayout());

        Group container = new Group(shell, SWT.None);
        container.setText("Container");
        container.setLayout(new GridLayout(3, false));

        Composite child1 = new Composite(container, SWT.BORDER);
        child1.setLayout(new GridLayout());
        new Label(child1, SWT.NONE).setText("Label in pane 1");

        Composite child2 = new Composite(container, SWT.BORDER);
        child2.setLayout(new GridLayout());
        new Button(child2, SWT.PUSH).setText("Button in pane2");

        final Composite child3 = new Composite(container, SWT.BORDER);
        child3.setLayout(new GridLayout());
        new Text(child3, SWT.BORDER).setText("Text in pane3");

        display.addListener(SWT.Skin, event -> {
            System.out.println("Skin: " + event.widget);
            setBackground(event.display, (Control) event.widget);
        });

        Composite buttonContainer = new Composite(shell, SWT.NONE);
        buttonContainer.setLayout(new GridLayout(3, false));
        Button reskin = new Button(buttonContainer, SWT.PUSH);
        reskin.setText("Reskin All");
        reskin.addSelectionListener(widgetSelectedAdapter(e -> {
            System.out.println("=======");
            shell.reskin(SWT.ALL);
        }));
        Button reskin2 = new Button(buttonContainer, SWT.PUSH);
        reskin2.setText("Reskin Shell");
        reskin2.addSelectionListener(widgetSelectedAdapter(e -> {
            System.out.println("=======");
            shell.reskin(SWT.None);
        }));
        Button reskin3 = new Button(buttonContainer, SWT.PUSH);
        reskin3.setText("Reskin Right Composite");
        reskin3.addSelectionListener(widgetSelectedAdapter(e -> {
            System.out.println("=======");
            child3.reskin(SWT.ALL);
        }));

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

    protected static void setBackground(Display display, Control control) {
        Random randomGenerator = new Random();
        int nextColor = randomGenerator.nextInt(100) + randomGenerator.nextInt(100);
        control.setBackground(display.getSystemColor(colors[nextColor % colors.length]));
    }

}