DrawablePanel

/*- * Copyright 2005-2018 Diomidis Spinellis * * Licensed 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 gr.aueb.card; import java.awt.Color; import java.awt.Graphics; import java.util.Vector; import javax.swing.JPanel; /** * The Holiday Card program main class. * * @author Georgios Zouganelis * Draw components from this object to reduce flickering. */ public class DrawablePanel extends JPanel { /** The DrawPanel this DrawablePanel is attached to **/ private DrawPanel controller = null; /** Serial number of persistent data. * Required, because JPanel implements serializable. */ private static final long serialVersionUID = 1L; /** * Constructor to initialize the DrawablePanel with it's controller * */ public DrawablePanel(DrawPanel panel) { controller = panel; } /** * Perform all drawing operations * By overriding the JPanel method and initiating all the drawing * from this place we take advantage of JPanel's double-buffering * capability. */ @Override public void paintComponent(Graphics g){ super.paintComponent(g); setBackground(DrawPanel.BACKGROUND_COLOR); // Ask our controller for a copy of items to draw Vector<Drawable> toPaint = controller.getDrawables(); for (Drawable d : toPaint) d.draw(g); } }