56 lines
1.3 KiB
Dart
56 lines
1.3 KiB
Dart
import 'dart:html';
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import 'package:image/image.dart';
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CanvasElement input;
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CanvasElement output;
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ImageElement inputImg;
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void main() {
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inputImg = new ImageElement(src: 'kitten.jpg', width: 712, height: 470);
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input = document.querySelector('#input');
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print(input);
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inputImg.onLoad.listen(imgLoaded);
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output = document.querySelector('#output');
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output.context2D.fillRect(0, 0, output.width, output.height);
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}
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void imgLoaded(Event e) {
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print("image loaded");
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input.context2D.drawImage(inputImg, 0, 0);
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Image outputImg = editImage( getImageFromCanvas(input) );
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drawImageToCanvas(output, outputImg ) ;
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}
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Image getImageFromCanvas(CanvasElement input) {
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ImageData data = input.context2D.getImageData(0, 0, input.width, input.height);
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return new Image.fromBytes(input.width, input.height, data.data);
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}
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void drawImageToCanvas(CanvasElement canvas, Image image) {
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var imageData = canvas.context2D.createImageData(image.width, image.height);
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imageData.data.setRange(0, imageData.data.length, image.getBytes());
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canvas.context2D.putImageData(imageData, 0, 0);
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}
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Image editImage(Image image) {
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image = contrast( image, 200);
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for (var y = 0; y < image.height; y++) {
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for (var x = 0; x < image.width; x++) {
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// print(image.getPixel(x, y));
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}
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}
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return image;
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} |