001 /*
002 * ScribbleData.java
003 * Part of the Scribble problem set.
004 *
005 * Developed for "Rethinking CS101", a project of Lynn Andrea Stein's AP Group.
006 * For more information, see http://www.ai.mit.edu/projects/cs101, the
007 * CS101 homepage or email las@ai.mit.edu.
008 *
009 * Copyright (C) 1998 Massachusetts Institute of Technology.
010 * Please do not redistribute without obtaining permission.
011 */
012
013 package scribble;
014
015 import java.awt.*;
016 import java.util.*;
017 import cs101.awt.Line;
018
019 /**
020 * ScribbleData is a repository of lines for use with a SmartCanvas.
021 * It has methods to add and clear lines, as well as paint on a given
022 * Graphics context.
023 *
024 * <P>Copyright (c) 1998 Massachusetts Institute of Technology
025 *
026 * @author Lynn Andrea Stein, las@ai.mit.edu
027 * @author Todd C. Parnell, tparnell@ai.mit.edu
028 * @version $Id: ScribbleData.java,v 1.2 2004/04/20 15:49:25 gus Exp $
029 */
030 public class ScribbleData {
031
032 /** The Component whose lines we're storing. */
033 private Component gui;
034 /** Where we store the lines. */
035 private Vector lines = new Vector(100, 100);
036
037 /** Initilizes an empty ScribbleData. */
038 public ScribbleData() {
039 }
040
041 /** Initilizes an empty ScribbleData. */
042 public ScribbleData(Component gui) {
043 this.gui = gui;
044 }
045
046 /** Sets the Component we paint on. */
047 public void setGUI(Component gui) {
048 this.gui = gui;
049 }
050
051 /** Paints all lines on this onto g. */
052 protected void paintLines (Graphics g) {
053 for (int i = 0; i < lines.size(); i++) {
054 ((Line)lines.elementAt(i)).drawOn(g);
055 }
056 }
057
058 /** Stores a new line into this. */
059 public synchronized void addLine (Line newLine) {
060 lines.addElement(newLine);
061 if (this.gui != null) {
062 newLine.drawOn(this.gui.getGraphics());
063 }
064 }
065
066 /** Clears all Lines from this. */
067 public synchronized void clearLines() {
068 lines.removeAllElements();
069 gui.repaint();
070 }
071 }
072
073 /*
074 * $Log: ScribbleData.java,v $
075 * Revision 1.2 2004/04/20 15:49:25 gus
076 * taking ownership
077 *
078 * Revision 1.1 2003/07/11 16:17:20 jon
079 * Initial commit of spring03 scribble source.
080 *
081 * Revision 1.1.1.1 2002/06/05 21:56:35 root
082 * CS101 comes to Olin finally.
083 *
084 * Revision 1.1 2000/05/06 22:30:58 mharder
085 * Moved to scribble subdirectory.
086 *
087 * Revision 1.4 1998/07/24 16:44:52 tparnell
088 * Placate new javadoc behavior
089 *
090 * Revision 1.3 1998/07/22 17:59:34 tparnell
091 * modifications to reflect new cs101.* package structure
092 *
093 * Revision 1.2 1998/07/20 18:55:33 tparnell
094 * Added javadoc and logging. Minor code mods for greater consistency
095 * between files.
096 *
097 */
098
099
100
101