| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.felix.example.servicebased.square; |
| |
| import java.awt.BasicStroke; |
| import java.awt.Color; |
| import java.awt.GradientPaint; |
| import java.awt.Graphics2D; |
| import java.awt.Point; |
| import java.awt.geom.Rectangle2D; |
| import java.util.Dictionary; |
| import java.util.Hashtable; |
| import javax.swing.ImageIcon; |
| import org.apache.felix.example.servicebased.host.service.SimpleShape; |
| import org.osgi.framework.BundleActivator; |
| import org.osgi.framework.BundleContext; |
| |
| /** |
| * This class implements a simple bundle activator for the square |
| * <tt>SimpleShape</tt> service. This activator simply creates an instance |
| * of the square service object and registers it with the service registry |
| * along with the service properties indicating the service's name and icon. |
| **/ |
| public class Activator implements BundleActivator |
| { |
| private BundleContext m_context = null; |
| |
| /** |
| * Implements the <tt>BundleActivator.start()</tt> method, which |
| * registers the square <tt>SimpleShape</tt> service. |
| * @param context The context for the bundle. |
| **/ |
| public void start(BundleContext context) |
| { |
| m_context = context; |
| Dictionary<String, Object> dict = new Hashtable<String, Object>(); |
| dict.put(SimpleShape.NAME_PROPERTY, "Square"); |
| dict.put(SimpleShape.ICON_PROPERTY, |
| new ImageIcon(this.getClass().getResource("square.png"))); |
| m_context.registerService( |
| SimpleShape.class.getName(), new Square(), dict); |
| } |
| |
| /** |
| * Implements the <tt>BundleActivator.start()</tt> method, which |
| * does nothing. |
| * @param context The context for the bundle. |
| **/ |
| public void stop(BundleContext context) |
| { |
| } |
| |
| /** |
| * This inner class implements the square <tt>SimpleShape</tt> service. |
| * It simply provides a <tt>draw()</tt> that paints a square. |
| **/ |
| public class Square implements SimpleShape |
| { |
| /** |
| * Implements the <tt>SimpleShape.draw()</tt> method for painting |
| * the shape. |
| * @param g2 The graphics object used for painting. |
| * @param p The position to paint the triangle. |
| **/ |
| public void draw(Graphics2D g2, Point p) |
| { |
| int x = p.x - 25; |
| int y = p.y - 25; |
| GradientPaint gradient = new GradientPaint( |
| x, y, Color.BLUE, x + 50, y, Color.WHITE); |
| g2.setPaint(gradient); |
| g2.fill(new Rectangle2D.Double(x, y, 50, 50)); |
| BasicStroke wideStroke = new BasicStroke(2.0f); |
| g2.setColor(Color.black); |
| g2.setStroke(wideStroke); |
| g2.draw(new Rectangle2D.Double(x, y, 50, 50)); |
| } |
| } |
| } |