From 60f5ce3cc1c64cb8673ba444c653b34598606b58 Mon Sep 17 00:00:00 2001
From: Unknown <marty.oehme@gmail.com>
Date: Mon, 12 Feb 2018 15:55:45 +0100
Subject: [PATCH] Remove Pointers to Image Lib

---
 lib/Dither.dart | 18 ++++++++++++++++++
 lib/dither.dart |  3 +++
 pubspec.yaml    |  1 -
 web/main.dart   | 40 ++++++----------------------------------
 4 files changed, 27 insertions(+), 35 deletions(-)
 create mode 100644 lib/Dither.dart
 create mode 100644 lib/dither.dart

diff --git a/lib/Dither.dart b/lib/Dither.dart
new file mode 100644
index 0000000..6cc123f
--- /dev/null
+++ b/lib/Dither.dart
@@ -0,0 +1,18 @@
+import 'dart:html';
+
+class Dither {
+  static ImageData editImage(ImageData image) {
+
+
+//  image = contrast( image, 200);
+
+    for (var y = 0; y < image.height; y++) {
+      for (var x = 0; x < image.width; x++) {
+//      print(image.getPixel(x, y));
+      }
+    }
+
+    return image;
+  }
+
+}
diff --git a/lib/dither.dart b/lib/dither.dart
new file mode 100644
index 0000000..7c5d5e3
--- /dev/null
+++ b/lib/dither.dart
@@ -0,0 +1,3 @@
+library dither;
+
+export 'Dither.dart';
\ No newline at end of file
diff --git a/pubspec.yaml b/pubspec.yaml
index 522ef38..02840b1 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -8,7 +8,6 @@ environment:
   sdk: '>=1.20.1 <2.0.0'
 
 dependencies:
-  image: "^1.1.29"
 #  path: ^1.4.1
 
 dev_dependencies:
diff --git a/web/main.dart b/web/main.dart
index 23f277c..b9f9f47 100644
--- a/web/main.dart
+++ b/web/main.dart
@@ -1,56 +1,28 @@
 import 'dart:html';
-import 'package:image/image.dart';
+import 'package:dart_floyd_steinberg_dithering/Dither.dart';
 
 CanvasElement input;
 CanvasElement output;
 
 ImageElement inputImg;
+ImageElement outputImg;
 
 void main() {
   inputImg = new ImageElement(src: 'kitten.jpg', width: 712, height: 470);
 
   input = document.querySelector('#input');
-  print(input);
-  inputImg.onLoad.listen(imgLoaded);
-
   output = document.querySelector('#output');
 
-  output.context2D.fillRect(0, 0, output.width, output.height);
+  inputImg.onLoad.listen(imgLoaded);
 }
 
 void imgLoaded(Event e) {
   print("image loaded");
   input.context2D.drawImage(inputImg, 0, 0);
 
-  Image outputImg = editImage( getImageFromCanvas(input) );
-
-  drawImageToCanvas(output, outputImg ) ;
+  output.context2D.putImageData( Dither.editImage( getImageData(input)), 0, 0);
 }
 
-Image getImageFromCanvas(CanvasElement input) {
-  ImageData data = input.context2D.getImageData(0, 0, input.width, input.height);
-  return new Image.fromBytes(input.width, input.height, data.data);
-}
-
-void drawImageToCanvas(CanvasElement canvas, Image image) {
-  var imageData = canvas.context2D.createImageData(image.width, image.height);
-  imageData.data.setRange(0, imageData.data.length, image.getBytes());
-
-  canvas.context2D.putImageData(imageData, 0, 0);
-}
-
-Image editImage(Image image) {
-
-
-  image = contrast( image, 200);
-
-  for (var y = 0; y < image.height; y++) {
-    for (var x = 0; x < image.width; x++) {
-//      print(image.getPixel(x, y));
-    }
-  }
-
-
-
-  return image;
+ImageData getImageData(CanvasElement canvas) {
+  return canvas.context2D.getImageData(0, 0, canvas.width, canvas.height);
 }
\ No newline at end of file