content: // ===============================================================================
  // Authors: AFRL/RQQD
  // Organization: Air Force Research Laboratory, Aerospace Systems Directorate, Power and Control Division
  // 
  // Copyright (c) 2017 Government of the United State of America, as represented by
  // the Secretary of the Air Force.  No copyright is claimed in the United States under
  // Title 17, U.S. Code.  All Other Rights Reserved.
  // ===============================================================================
  
  /*
   * GRAL: GRAphing Library for Java(R)
   *
   * (C) Copyright 2009-2013 Erich Seifert <dev[at]erichseifert.de>,
   * Michael Seifert <mseifert[at]error-reports.org>
   *
   * This file is part of GRAL.
   *
   * GRAL is free software: you can redistribute it and/or modify
   * it under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation, either version 3 of the License, or
   * (at your option) any later version.
   *
   * GRAL is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public License
   * along with GRAL.  If not, see <http://www.gnu.org/licenses/>.
   */
  package de.erichseifert.gral.graphics;
  
  import java.awt.geom.Dimension2D;
  import java.awt.geom.Rectangle2D;
  
  
  /**
   * Interface providing functions for a lightweight component that can be drawn
   * on the screen. Functions include management of the bounding rectangle,
   * returning a preferred size for layout operations, or drawing using a
   * specified context.
   */
  public interface Drawable {
  	/**
  	 * Returns the bounds of this {@code Drawable}.
  	 * @return a bounding rectangle
  	 */
  	Rectangle2D getBounds();
  	/**
  	 * Sets the bounds to the specified bounding rectangle.
  	 * @param bounds rectangle containing the component.
  	 */
  	void setBounds(Rectangle2D bounds);
  	/**
  	 * Sets the bounds to the specified coordinates, width and height.
  	 * This method should be used when overriding functionality.
  	 * @param x horizontal position of the upper-left corner
  	 * @param y vertical position of the upper-left corner
  	 * @param width horizontal extent
  	 * @param height vertical extent
  	 */
  	void setBounds(double x, double y, double width, double height);
  
  	/**
  	 * Returns the x-position of the bounds.
  	 * @return horizontal position of the upper-left corner of the bounding
  	 * rectangle
  	 */
  	double getX();
  	/**
  	 * Returns the y-position of the bounds.
  	 * @return vertical position of the upper-left corner of the bounding
  	 * rectangle
  	 */
  	double getY();
  
  	/**
  	 * Returns the width of the bounds.
  	 * @return horizontal extent
  	 */
  	double getWidth();
  	/**
  	 * Returns the height of the bounds.
  	 * @return vertical extent
  	 */
  	double getHeight();
  
  	/**
  	 * Returns the preferred size of the {@code Drawable}.
  	 * @return horizontal and vertical extent that wants to be reached
  	 */
  	Dimension2D getPreferredSize();
  
  	/**
  	 * Draws the {@code Drawable} with the specified drawing context.
  	 * @param context Environment used for drawing
  	 */
  	void draw(DrawingContext context);
  }
  