javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/api/ImageData.java
author Jaroslav Tulach <jaroslav.tulach@apidesign.org>
Sat, 26 Jan 2013 08:47:05 +0100
changeset 592 5e13b1ac2886
child 1787 ea12a3bb4b33
permissions -rw-r--r--
In order to support fields of the same name in subclasses we are now prefixing them with name of the class that defines them. To provide convenient way to access them from generated bytecode and also directly from JavaScript, there is a getter/setter function for each field. It starts with _ followed by the field name. If called with a parameter, it sets the field, with a parameter it just returns it.
     1 /**
     2  * Back 2 Browser Bytecode Translator
     3  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
     4  *
     5  * This program is free software: you can redistribute it and/or modify
     6  * it under the terms of the GNU General Public License as published by
     7  * the Free Software Foundation, version 2 of the License.
     8  *
     9  * This program is distributed in the hope that it will be useful,
    10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    12  * GNU General Public License for more details.
    13  *
    14  * You should have received a copy of the GNU General Public License
    15  * along with this program. Look for COPYING file in the top folder.
    16  * If not, see http://opensource.org/licenses/GPL-2.0.
    17  */
    18 /*
    19  * To change this template, choose Tools | Templates
    20  * and open the template in the editor.
    21  */
    22 package org.apidesign.bck2brwsr.htmlpage.api;
    23 
    24 import org.apidesign.bck2brwsr.core.JavaScriptBody;
    25 
    26 /**
    27  *
    28  * @author Anton Epple <toni.epple@eppleton.de>
    29  */
    30 public class ImageData {
    31 
    32     private Object imageData;
    33     private Data data;
    34 
    35     public ImageData(Object imageData) {
    36         this.imageData = imageData;
    37     }
    38     
    39     public Data getData(){
    40         if (data == null){
    41             data = new Data(getDataImpl(imageData));
    42         }
    43         return data;
    44     }
    45     
    46     @JavaScriptBody(args = {"imageData"}, body = "return imageData.data")
    47     public native Object getDataImpl(Object imageData);
    48 
    49     public double getWidth() {
    50         return getWidthImpl(imageData);
    51     }
    52 
    53     @JavaScriptBody(args = {"imageData"}, body = "return imagedata.width;")
    54     private static native double getWidthImpl(Object imageData);
    55 
    56     public double getHeight() {
    57         return getHeightImpl(imageData);
    58     }
    59 
    60     @JavaScriptBody(args = {"imageData"}, body = "return imagedata.height;")
    61     private static native double getHeightImpl(Object imageData);
    62 
    63     Object object() {
    64         return imageData;
    65     }
    66 
    67     public static class Data {
    68 
    69         Object data;
    70 
    71         public Data(Object data) {
    72             this.data = data;
    73         }
    74 
    75         public int get(int index) {
    76             return getImpl(data, index);
    77         }
    78 
    79         public void set(int index, int value) {
    80             setImpl(data, index, value);
    81         }
    82 
    83         @JavaScriptBody(args = {"data", "index", "value"}, body = "data[index]=value;")
    84         private static native void setImpl(Object data, int index, int value);
    85 
    86         @JavaScriptBody(args = {"imagedata", "index"}, body = "return data[index];")
    87         private static native int getImpl(Object data, int index);
    88     }
    89 }