com.objetdirect.tatami.client.gfx.Polyline.java Source code

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Here is the source code for com.objetdirect.tatami.client.gfx.Polyline.java

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/*
 * Tatami: 
 * Copyright (C) 2007 Objet Direct
 * Copyright (C) 2007 France Telecom
 * Contact: tatami@googlegroups.com
 * 
 * This library 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 2.1 of the License, or any later version.
 * 
 * This library 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 this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 * USA
 *
 * Authors:  Vianney Grassaud
 * Initial developer(s): Vianney Grassaud
 * Contributor(s):
 */
package com.objetdirect.tatami.client.gfx;

import com.google.gwt.core.client.JavaScriptObject;

/**
 * The Polyline component permits to create complex 
 * shape from an array of <code>Point</code>. 
 * 
 * @author Vianney
 *
 */
public class Polyline extends GraphicObject {

    /** The array of <code>Point</code> which represent this <code>PolyLine</code>*/
    private Point[] points;

    /**
     * Creates a new <code>Polyline</code>.
     * @param points an array of <code>Points</code> 
     **/
    public Polyline(Point[] points) {
        super();
        this.points = points;
    }

    /**
     * Returns the points which describe this <code>Polyline</code>
     * @return an array of <code>Point</code>
     */
    public Point[] getPoints() {
        return this.points;
    }

    /**
     * Creates a JavaScript array of JavaScrtip Point, from a Java array of <code>Point</code>.
     * @param points the Java <code>Points</code>
     * @return a JavaScrtip array
     */
    private JavaScriptObject createArray(Point[] points) {
        JavaScriptObject jsArray = JavaScriptObject.createArray();
        for (int i = 0; i < points.length; i++) {
            jsArray = put(jsArray, points[i].getGFXPoint(), i);
        }
        return jsArray;
    }

    /**
     * Put a JavaScript point in an array. 
     * @param array the array of JavaScript Point
     * @param point the point to put in the array
     * @param index the index to insert the point
     * @return the JavaScript array
     */
    private native JavaScriptObject put(JavaScriptObject array, JavaScriptObject point, int index)/*-{
                                                                                                  array[index] = point;
                                                                                                  return array;
                                                                                                  }-*/;

    /**
     * Creates the GFX Polyline
     */
    protected JavaScriptObject createGfx(JavaScriptObject surface) {
        final JavaScriptObject arrayPoints = createArray(points);
        return createPolyline(surface, arrayPoints);
    }

    /**
     * Creates the GFX Polyline
     */

    private native JavaScriptObject createPolyline(JavaScriptObject surface, JavaScriptObject points) /*-{
                                                                                                      return surface.createPolyline({points:points});
                                                                                                      }-*/;

}