/*
* 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.host;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.RenderingHints;
import javax.swing.JComponent;
import org.apache.felix.example.extenderbased.host.extension.SimpleShape;
/**
* Simple component class used to represent a drawn shape. This component
* uses a shape service to paint its contents.
**/
public class ShapeComponent extends JComponent
{
private static final long serialVersionUID = 1L;
private DrawingFrame m_frame;
private String m_shapeName;
/**
* Construct a component for the specified drawing frame with the specified
* named shape. The component acquires the named shape from the drawing
* frame at the time of painting, which enables it to account for
* service dynamism.
* @param frame The drawing frame associated with the component.
* @param shapeName The name of the shape to draw.
**/
public ShapeComponent(DrawingFrame frame, String shapeName)
{
m_frame = frame;
m_shapeName = shapeName;
}
/**
* Paints the contents of the component. The component acquires the named
* shape from the drawing frame at the time of painting, which enables it
* to account for service dynamism.
* @param g The graphics object to use for painting.
**/
protected void paintComponent(Graphics g)
{
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
SimpleShape shape = m_frame.getShape(m_shapeName);
shape.draw(g2, new Point(getWidth()/2, getHeight()/2));
}
}