# HG changeset patch
# User Anton Epple <toni.epple@eppleton.de>
# Date 1369647101 -7200
# Node ID 9a6cf322f890ded09c74d540cc2f5fe5c391143c
# Parent  ab08a4271d5f589fe3dec71078a050e7d9771b8a
RGBA values for ImageData

diff -r ab08a4271d5f -r 9a6cf322f890 javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/ImageDataWrapper.java
--- a/javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/ImageDataWrapper.java	Mon May 27 11:26:55 2013 +0200
+++ b/javaquery/api/src/main/java/org/apidesign/bck2brwsr/htmlpage/ImageDataWrapper.java	Mon May 27 11:31:41 2013 +0200
@@ -1,19 +1,19 @@
 /**
- * Back 2 Browser Bytecode Translator
- * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
+ * Back 2 Browser Bytecode Translator Copyright (C) 2012 Jaroslav Tulach
+ * <jaroslav.tulach@apidesign.org>
  *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, version 2 of the License.
+ * This program is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation, version 2 of the License.
  *
- * This program 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 General Public License for more details.
+ * This program 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 General Public License for more
+ * details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program. Look for COPYING file in the top folder.
- * If not, see http://opensource.org/licenses/GPL-2.0.
+ * You should have received a copy of the GNU General Public License along with
+ * this program. Look for COPYING file in the top folder. If not, see
+ * http://opensource.org/licenses/GPL-2.0.
  */
 /*
  * To change this template, choose Tools | Templates
@@ -28,34 +28,41 @@
  *
  * @author Anton Epple <toni.epple@eppleton.de>
  */
-public class ImageDataWrapper implements ImageData{
+public class ImageDataWrapper implements ImageData {
 
+    private double width, height = -1;
     private Object imageData;
     private Data data;
 
     public ImageDataWrapper(Object imageData) {
         this.imageData = imageData;
     }
-    
-    public Data getData(){
-        if (data == null){
+
+    private Data getData() {
+        if (data == null) {
             data = new Data(getDataImpl(imageData));
         }
         return data;
     }
-    
+
     @JavaScriptBody(args = {"imageData"}, body = "return imageData.data")
     public native Object getDataImpl(Object imageData);
 
     public double getWidth() {
-        return getWidthImpl(imageData);
+        if (width == -1) {
+            width = getWidthImpl(imageData);
+        }
+        return width;
     }
 
     @JavaScriptBody(args = {"imageData"}, body = "return imagedata.width;")
     private static native double getWidthImpl(Object imageData);
 
     public double getHeight() {
-        return getHeightImpl(imageData);
+        if (height == -1) {
+            height = getHeightImpl(imageData);
+        }
+        return height;
     }
 
     @JavaScriptBody(args = {"imageData"}, body = "return imagedata.height;")
@@ -66,15 +73,52 @@
     }
 
     @Override
-    public int getPixel(double x, double y) {
-        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
+    public int getR(double x, double y) {
+        double idx = (x + y * width) * 4;
+        return getData().get(idx);
     }
 
     @Override
-    public void setPixel(double x, double y, int value) {
-        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
+    public int getG(double x, double y) {
+        double idx = (x + y * width) * 4;
+        return getData().get(idx + 1);
     }
 
+    @Override
+    public int getB(double x, double y) {
+        double idx = (x + y * width) * 4;
+        return getData().get(idx + 2);
+    }
+
+    @Override
+    public int getA(double x, double y) {
+        double idx = (x + y * width) * 4;
+        return getData().get(idx + 3);
+    }
+
+    @Override
+    public void setR(double x, double y, int value) {
+        double idx = (x + y * width) * 4;
+        getData().set(idx, value);
+    }
+
+    @Override
+    public void setG(double x, double y, int value) {
+        double idx = (x + y * width) * 4;
+        getData().set(idx + 1, value);
+    }
+
+    @Override
+    public void setB(double x, double y, int value) {
+        double idx = (x + y * width) * 4;
+        getData().set(idx + 2, value);
+    }
+
+    @Override
+    public void setA(double x, double y, int value) {
+        double idx = (x + y * width) * 4;
+        getData().set(idx + 3, value);
+    }
 
     public static class Data {
 
@@ -84,18 +128,18 @@
             this.data = data;
         }
 
-        public int get(int index) {
+        public int get(double index) {
             return getImpl(data, index);
         }
 
-        public void set(int index, int value) {
+        public void set(double index, int value) {
             setImpl(data, index, value);
         }
 
         @JavaScriptBody(args = {"data", "index", "value"}, body = "data[index]=value;")
-        private static native void setImpl(Object data, int index, int value);
+        private static native void setImpl(Object data, double index, int value);
 
         @JavaScriptBody(args = {"imagedata", "index"}, body = "return data[index];")
-        private static native int getImpl(Object data, int index);
+        private static native int getImpl(Object data, double index);
     }
 }