/*
* 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));
}
}
}