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How to use makeOffscreenCanvas method in wpt

Best JavaScript code snippet using wpt

common.js

Source:common.js

...14        testCtx.fillRect(10, 10, 10, 10);15        resolve(testCanvas);16    });17}18function makeOffscreenCanvas() {19    return new Promise(resolve => {20        let canvas = new OffscreenCanvas(20, 20);21        var testCtx = canvas.getContext("2d");22        testCtx.fillStyle = "rgb(255, 0, 0)";23        testCtx.fillRect(0, 0, 10, 10);24        testCtx.fillStyle = "rgb(0, 255, 0)";25        testCtx.fillRect(10, 0, 10, 10);26        testCtx.fillStyle = "rgb(0, 0, 255)";27        testCtx.fillRect(0, 10, 10, 10);28        testCtx.fillStyle = "rgb(0, 0, 0)";29        testCtx.fillRect(10, 10, 10, 10);30        resolve(canvas);31    });32}...

Using AI Code Generation

1var canvas = makeOffscreenCanvas(100, 100);2var ctx = canvas.getContext('2d');3ctx.fillStyle = 'red';4ctx.fillRect(0, 0, 50, 50);5ctx.fillStyle = 'green';6ctx.fillRect(50, 0, 50, 50);7ctx.fillStyle = 'blue';8ctx.fillRect(0, 50, 50, 50);9ctx.fillStyle = 'yellow';10ctx.fillRect(50, 50, 50, 50);11postMessage(canvas, [canvas]);12function test() {13  var worker = new Worker('test.js');14  worker.onmessage = function(e) {15    var image = new Image();16    image.src = e.data.convertToBlob().URL;17    document.body.appendChild(image);18  }19}20<body onload="test()">

Using AI Code Generation

1var canvas = wpt.makeOffscreenCanvas(100, 100);2var ctx = canvas.getContext('2d');3ctx.fillStyle = 'rgb(200, 0, 0)';4ctx.fillRect(10, 10, 55, 50);5var dataUrl = wpt.toDataURL(canvas);6var blob = wpt.dataURLToBlob(dataUrl);7wpt.uploadBlob(blob);

Using AI Code Generation

1let offscreenCanvas = await makeOffscreenCanvas(100, 100);2let context = offscreenCanvas.getContext('2d');3context.fillStyle = 'red';4context.fillRect(0, 0, 100, 100);5let imageData = context.getImageData(0, 0, 100, 100);6let data = imageData.data;7for (let i = 0; i < data.length; i += 4) {8  if (data[i] != 255 || data[i + 1] != 0 || data[i + 2] != 0 || data[i + 3] != 255) {9    throw "Expected red pixel";10  }11}

Using AI Code Generation

1let canvas = await driver.makeOffscreenCanvas(100, 100);2let context = canvas.getContext('2d');3context.fillStyle = 'red';4context.fillRect(0, 0, 100, 100);5let imageData = context.getImageData(0, 0, 100, 100);6let data = imageData.data;7assert_equals(data[0], 255);8assert_equals(data[1], 0);9assert_equals(data[2], 0);10assert_equals(data[3], 255);11for (let i = 4; i < data.length; i++) {12  assert_equals(data[i], 0);13}

Using AI Code Generation

1var canvas = wptdriver.makeOffscreenCanvas(100, 100);2var ctx = canvas.getContext('2d');3ctx.fillStyle = 'red';4ctx.fillRect(0, 0, 100, 100);5wptdriver.saveOffscreenCanvas(canvas, 'test.png', function(err) {6    if (err) {7        console.log('Error saving canvas: ' + err);8    } else {9        console.log('Canvas saved');10    }11});12var canvas = wptdriver.makeOffscreenCanvas(100, 100);13var ctx = canvas.getContext('2d');14ctx.fillStyle = 'red';15ctx.fillRect(0, 0, 100, 100);16wptdriver.saveOffscreenCanvas(canvas, 'test.png', function(err) {17    if (err) {18        console.log('Error saving canvas: ' + err);19    } else {20        console.log('Canvas saved');21    }22});

Using AI Code Generation

1var wpt = require('webpagetest');2var options = {3};4wpt.runTest('www.webpagetest.org', options, function(err, data) {5  if (err) return console.error(err);6  console.log(data);7});8var wpt = require('webpagetest');9var options = {10};11wpt.runTest('www.webpagetest.org', options, function(err, data) {12  if (err) return console.error(err);13  console.log(data);14});15var wpt = require('webpagetest');16var options = {

Using AI Code Generation

1async function test() {2  const canvas = await makeOffscreenCanvas(100, 100);3}4async function test() {5  const canvas = new OffscreenCanvas(100, 100);6}7const canvas = await makeOffscreenCanvas(100, 100);8const canvas = new OffscreenCanvas(100, 100);

Using AI Code Generation

1var context = makeOffscreenCanvas(400, 400);2context.fillStyle = 'rgb(255, 255, 255)';3context.fillRect(0, 0, 400, 400);4context.fillStyle = 'rgb(0, 0, 0)';5context.font = '24px Arial';6context.fillText('Hello, World', 0, 100);7context.fillText('Hello, World', 0, 200);8context.fillText('Hello, World', 0, 300);9assert_equals(context.measureText('Hello, World').width, 200, "Text width should be 200");10assert_equals(context.measureText('Hello, World').width, 200, "Text width should be 200");11assert_equals(context.measureText('Hello, World').width, 200, "Text width should be 200");

Using AI Code Generation

1var wpt = await wptdriver.makeOffscreenCanvas();2var imgData = wpt.getImageData();3var wpt = await wptdriver.makeOffscreenCanvas();4var imgData = wpt.getImageData();5var wpt = await wptdriver.makeOffscreenCanvas();6var imgData = wpt.getImageData();7var wpt = await wptdriver.makeOffscreenCanvas();8var imgData = wpt.getImageData();9var wpt = await wptdriver.makeOffscreenCanvas();10var imgData = wpt.getImageData();11var wpt = await wptdriver.makeOffscreenCanvas();12var imgData = wpt.getImageData();13var wpt = await wptdriver.makeOffscreenCanvas();14var imgData = wpt.getImageData();

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