LayoutTests/fast/canvas/canvas-ellipse_t01.dart

/*
 * Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 * for details. All rights reserved. Use of this source code is governed by a
 * BSD-style license that can be found in the LICENSE file.
 */
/** 
 * @description This test checks ellipse API in canvas v5
 */
import "dart:html";
import "dart:math" as Math;
import "../../testcommon.dart";
import "../../../Utils/async_utils.dart";

main() {
  var canvas = document.createElement('canvas');
  document.body.append(canvas);
  canvas.setAttribute('width', '400');
  canvas.setAttribute('height', '400');
  var ctx = canvas.getContext('2d');

  ctx.fillStyle="rgba(255, 255, 255, 1.0)";
  ctx.fillRect(0, 0, 400, 400);

  ctx.strokeStyle="rgba(0, 0, 0, 1.0)";
  ctx.lineWidth = 10;
  ctx.beginPath();
  ctx.moveTo(0, 100);
  ctx.ellipse(200, 200, 100, 150, Math.PI / 9, -Math.PI, Math.PI * 5 / 9, false);
  ctx.lineTo(0, 300);
  ctx.stroke();

  var imageData, data;

  // Verify the method must add a straight line from the last point in the subpath
  // to the start point of the ellipse.
  imageData = ctx.getImageData(5, 103, 1, 1);
  data = imageData.data;
  shouldBe(data[0], 0);

  imageData = ctx.getImageData(49, 130, 1, 1);
  data = imageData.data;
  shouldBe(data[0], 0);

  imageData = ctx.getImageData(103, 163, 1, 1);
  data = imageData.data;
  shouldBe(data[0], 0);

  imageData = ctx.getImageData(36, 108, 1, 1);
  data = imageData.data;
  shouldBe(data[0], 255);

  // Verify ellipse API draws well.
  imageData = ctx.getImageData(101, 179, 1, 1);
  data = imageData.data;
  shouldBe(data[0], 255);

  imageData = ctx.getImageData(119, 132, 1, 1);
  data = imageData.data;
  shouldBe(data[0], 0);

  imageData = ctx.getImageData(260, 62, 1, 1);
  data = imageData.data;
  shouldBe(data[0], 0);

  imageData = ctx.getImageData(301, 122, 1, 1);
  data = imageData.data;
  shouldBe(data[0], 0);

  imageData = ctx.getImageData(273, 272, 1, 1);
  data = imageData.data;
  shouldBe(data[0], 0);

  imageData = ctx.getImageData(169, 344, 1, 1);
  data = imageData.data;
  shouldBe(data[0], 0);

  imageData = ctx.getImageData(196, 362, 1, 1);
  data = imageData.data;
  shouldBe(data[0], 255);

  // Verify the last point of ellipse is the start point of the next subpath.
  imageData = ctx.getImageData(128, 331, 1, 1);
  data = imageData.data;
  shouldBe(data[0], 0);

  imageData = ctx.getImageData(65, 315, 1, 1);
  data = imageData.data;
  shouldBe(data[0], 0);

  imageData = ctx.getImageData(9, 302, 1, 1);
  data = imageData.data;
  shouldBe(data[0], 0);

  imageData = ctx.getImageData(58, 300, 1, 1);
  data = imageData.data;
  shouldBe(data[0], 255);
}