examples/extenderbased.square/src/main/java/org/apache/felix/example/extenderbased/square/Square.java

/*
 * 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.extenderbased.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.*;
import org.apache.felix.example.extenderbased.host.extension.SimpleShape;
import org.osgi.framework.*;

/**
 * This class implements the square <tt>SimpleShape</tt> extension.
 * 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));
    }
}