Robert Nystrom
4cc31f8f4f
There are no behavioral changes here, I just ran `dart format` on the `tests/lib/html/` directory. Change-Id: I221b2a370adc393e49621db1d37aa6eeb09b3015 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/425329 Reviewed-by: Srujan Gaddam <srujzs@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com> Commit-Queue: Bob Nystrom <rnystrom@google.com>
85 lines
2.1 KiB
Dart
85 lines
2.1 KiB
Dart
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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library canvas_rendering_context_2d_test;
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import 'dart:html';
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import 'dart:math';
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import 'package:expect/legacy/minitest.dart'; // ignore: deprecated_member_use_from_same_package
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// Some rounding errors in the browsers.
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checkPixel(List<int> pixel, List<int> expected) {
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expect(pixel[0], closeTo(expected[0], 2));
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expect(pixel[1], closeTo(expected[1], 2));
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expect(pixel[2], closeTo(expected[2], 2));
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expect(pixel[3], closeTo(expected[3], 2));
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}
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var canvas;
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var context;
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var otherCanvas;
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var otherContext;
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var video;
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void createCanvas() {
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canvas = new CanvasElement();
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canvas.width = 100;
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canvas.height = 100;
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context = canvas.context2D;
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}
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void createOtherCanvas() {
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otherCanvas = new CanvasElement();
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otherCanvas.width = 10;
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otherCanvas.height = 10;
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otherContext = otherCanvas.context2D;
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otherContext.fillStyle = "red";
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otherContext.fillRect(0, 0, otherCanvas.width, otherCanvas.height);
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}
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void setupFunc() {
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createCanvas();
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createOtherCanvas();
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video = new VideoElement();
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}
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void tearDownFunc() {
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canvas = null;
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context = null;
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otherCanvas = null;
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otherContext = null;
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video = null;
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}
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List<int> readPixel(int x, int y) {
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var imageData = context.getImageData(x, y, 1, 1);
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return imageData.data;
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}
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/// Returns true if the pixel has some data in it, false otherwise.
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bool isPixelFilled(int x, int y) => readPixel(x, y).any((p) => p != 0);
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String pixelDataToString(List<int> data, int x, int y) {
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return '[${data.join(", ")}]';
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}
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String _filled(bool v) => v ? "filled" : "unfilled";
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void expectPixelFilled(int x, int y, [bool filled = true]) {
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expect(
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isPixelFilled(x, y),
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filled,
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reason:
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'Pixel at ($x, $y) was expected to'
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' be: <${_filled(filled)}> but was: <${_filled(!filled)}> with data: '
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'${pixelDataToString(readPixel(x, y), x, y)}',
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);
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}
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void expectPixelUnfilled(int x, int y) {
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expectPixelFilled(x, y, false);
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}
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