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products/Sources/formale Sprachen/C/Firefox/dom/canvas/test/ (Browser von der Mozilla Stiftung Version 136.0.1^©) Datei vom 10.2.2025 mit Größe 4 kB

Quelle test_imagebitmap_on_worker.html Sprache: HTML

products/Sources/formale Sprachen/C/Firefox/dom/canvas/test/test_imagebitmap_on_worker.html

<!DOCTYPE HTML>
<title>Test ImageBitmap on Worker</title>
<meta charset="utf-8">
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css">
<body>
<script type="text/javascript">

// The following tests is not enabled in Worker now:
// create from a HTMLImageElement
// create from a HTMLVideoElement
// create from a HTMLCanvasElement
// create from a CanvasRenderingContext2D
// call CanvasRenderingContext2D.drawImage()
// call CanvasRenderingContext2D.createPaattern()
// test security error from an unclean HTHMLImageElemnt
// test security error from an unclean HTHMLVideoElemnt
// test security error from an tainted HTHMLCanvasElemnt
// test security error from an tainted CanvasRenderingContext2D

// Task constructor function
function Task(aType, aWidth, aHeight, aMsg, aSource) {
  this.type = aType;
  this.width = aWidth;
  this.height = aHeight;
  this.msg = aMsg;
  this.source = aSource;
}

function TaskWithCrop(aType, aWidth, aHeight, aMsg, aSource, aSx, aSy, aSw, aSh) {
  Task.call(this, aType, aWidth, aHeight, aMsg, aSource);
  this.sx = aSx;
  this.sy = aSy;
  this.sw = aSw;
  this.sh = aSh;
}
TaskWithCrop.prototype = Object.create(Task.prototype);
TaskWithCrop.prototype.constructor = TaskWithCrop;

var WORKER_TASKS = {
  tasks: [], // an arrayf of Task objects
  dispatch() {
    if (this.tasks.length) {
      worker.postMessage(this.tasks.pop());
    } else {
      worker.terminate();
      SimpleTest.finish();
    }
  },
};

var worker = new Worker("imagebitmap_on_worker.js");
worker.onmessage = function(event) {
  if (event.data.type == "status") {
    ok(event.data.status, event.data.msg);
  } else if (event.data.type == "doneTask") {
    WORKER_TASKS.dispatch();
  }
}

function runTests() {
  ok(worker, "Worker created successfully.");

  // prepare an ImageData object
  var image = document.createElement('img');
  var canvas = document.createElement('canvas');
  var ctx = canvas.getContext('2d');
  var imageData;
  image.src = "image_rgrg-256x256.png";
  image.onload = function() {
    var width = image.naturalWidth;
    var height = image.naturalHeight;

    canvas.width = image.naturalWidth;
    canvas.height = image.naturalHeight;
    ctx.drawImage(image, 0, 0, image.naturalWidth, image.naturalHeight);

    imageData = ctx.getImageData(0, 0, image.naturalWidth, image.naturalHeight);

    // task: test soruce: an ImageData
    WORKER_TASKS.tasks.push(new Task("testImageData", width, height, "", imageData));

    // task: test soruce: an ImageBitmap
    WORKER_TASKS.tasks.push(new Task("testImageBitmap", width, height, "", imageData));

    // task: test soruce: a Blob
    canvas.toBlob(function(aBlob) {
     WORKER_TASKS.tasks.push(new Task("testBlob", width, height, "", aBlob));
    });
  };

  // task: throw exception: general: sw == 0 || sh == 0
  WORKER_TASKS.tasks.push(new TaskWithCrop("testException", 0, 0, "createImageBitmap should throw with 0 width/height", imageData, 0, 0, 0, 0));

  // task: throw exception: general: source is a null
  WORKER_TASKS.tasks.push(new TaskWithCrop("testException", 0, 0, "createImageBitmap should throw with null source", null, 0, 0, 0, 0));

  // task: throw exception: ImageData: an ImageData object whose data attribute is backed by a detached buffer
  var neuturedImageData = function getNeuturedImageData(iData) {
    worker.postMessage(iData.data.buffer, [iData.data.buffer]);
    return iData;
  }(ctx.getImageData(0, 0, 50, 50));
  WORKER_TASKS.tasks.push(new TaskWithCrop("testException", neuturedImageData.width, neuturedImageData.height,
                                           "createImageBitmap should throw with neutured ImageData",
                                           neuturedImageData, 0, 0, neuturedImageData.width, neuturedImageData.height));

  // task: throw exception: Blob: a corrupted blob
  function getCorruptedBlob(fileName) {
    var xhr = new XMLHttpRequest();
    xhr.open("GET", fileName);
    xhr.responseType = "blob";//force the HTTP response, response-type header to be blob
    xhr.onload = function() {
        WORKER_TASKS.tasks.push(new Task("testException", 0, 0, "createImageBitmap should reject promise with corrupted blob", xhr.response));
    }
    xhr.send();
  }
  getCorruptedBlob("image_error-early.png");

  // task: throw exception: Blob: non-image file
  function getNonImageFile(fileName) {
    var xhr = new XMLHttpRequest();
    xhr.open("GET", fileName);
    xhr.responseType = "blob";//force the HTTP response, response-type header to be blob
    xhr.onload = function() {
      WORKER_TASKS.tasks.push(new Task("testException", 0, 0, "createImageBitmap should reject promise with non-image blob", xhr.response));

      // start to dispatch tasks to worker
      WORKER_TASKS.dispatch();
    }
    xhr.send();
  }
  getNonImageFile("imagebitmap_on_worker.js");

  // task: test bug : bug 1239300
  WORKER_TASKS.tasks.push(new Task("testBug1239300"));
}

SimpleTest.waitForExplicitFinish();
addLoadEvent(runTests);

</script>
</body>

Messung V0.5

¤ Dauer der Verarbeitung: 0.4 Sekunden ¤

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