toni@521: /**
toni@521:  * Back 2 Browser Bytecode Translator
toni@521:  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
toni@521:  *
toni@521:  * This program is free software: you can redistribute it and/or modify
toni@521:  * it under the terms of the GNU General Public License as published by
toni@521:  * the Free Software Foundation, version 2 of the License.
toni@521:  *
toni@521:  * This program is distributed in the hope that it will be useful,
toni@521:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
toni@521:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
toni@521:  * GNU General Public License for more details.
toni@521:  *
toni@521:  * You should have received a copy of the GNU General Public License
toni@521:  * along with this program. Look for COPYING file in the top folder.
toni@521:  * If not, see http://opensource.org/licenses/GPL-2.0.
toni@521:  */
toni@521: package org.apidesign.bck2brwsr.htmlpage.api;
toni@521: 
toni@1134: import net.java.html.canvas.GraphicsContext;
jaroslav@1307: import net.java.html.canvas.spi.GraphicsUtils;
toni@521: import org.apidesign.bck2brwsr.core.JavaScriptBody;
toni@1138: import org.apidesign.bck2brwsr.htmlpage.HTML5GraphicsEnvironment;
toni@809: import static org.apidesign.bck2brwsr.htmlpage.api.Element.getAttribute;
toni@521: 
toni@521: /**
toni@521:  *
toni@521:  * @author Anton Epple <toni.epple@eppleton.de>
toni@521:  */
toni@1134: public class Canvas extends Element {
toni@521: 
toni@1125:     public Canvas(String id) {
toni@521:         super(id);
toni@521:     }
toni@521: 
toni@521:     public void setHeight(int height) {
toni@521:         setAttribute(this, "height", height);
toni@521:     }
toni@521: 
toni@521:     public int getHeight() {
toni@809:        Object ret =  getAttribute(this, "height");
toni@809:        return (ret instanceof Number) ? ((Number)ret).intValue(): Integer.MIN_VALUE;
toni@521:     }
toni@521:     
toni@521:     public void setWidth(int width) {
toni@521:         setAttribute(this, "width", width);
toni@521:     }
toni@521: 
toni@811:     public int getWidth() {
toni@809:        Object ret =  getAttribute(this, "width");
toni@809:        return (ret instanceof Number) ? ((Number)ret).intValue(): Integer.MIN_VALUE;
toni@521:     }
toni@521: 
toni@521:     @JavaScriptBody(
toni@521:             args = {"el"},
jaroslav@592:             body = "var e = window.document.getElementById(el._id());\n"
toni@521:             + "return e.getContext('2d');\n")
toni@1125:     private native static Object getContextImpl(Canvas el);
toni@521: 
toni@1134:     public GraphicsContext getContext() {
jaroslav@1307:         final HTML5GraphicsEnvironment env = new HTML5GraphicsEnvironment(getContextImpl(this), this);
toni@1138: //        System.err.println("called getContext");
jaroslav@1307:         return GraphicsUtils.create(env);
toni@521:     }
toni@521: 
toni@521:     @Override
toni@521:     void dontSubclass() {
toni@521:     }
toni@521: }