2019-09-01 00:47:39 +00:00
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<!DOCTYPE html>
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<style>
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div.container {
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display: inline-block;
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margin-right: 20px;
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margin-bottom: 10px;
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width: 100px;
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vertical-align: top;
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}
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div.horizontal {
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2019-09-04 18:28:12 +00:00
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width: 102px;
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2019-09-01 00:47:39 +00:00
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height: 52px;
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}
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div.vertical {
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width: 52px;
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height: 102px;
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}
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canvas {
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border: 1px solid black;
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}
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canvas.horizontal {
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width: 100px;
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height: 50px;
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}
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canvas.vertical {
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width: 50px;
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height: 100px;
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}
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</style>
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<body>
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<b>CanvasRenderingContext2D.drawImage() should rotate the images respecting their EXIF orientation.</b>
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<br>
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<br>
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<div class ="container">
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<div class ="horizontal">
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<canvas class="horizontal" id="canvas1"></canvas>
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</div>
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<br>Normal
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</div>
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<div class ="container">
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<div class ="horizontal">
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<canvas class="horizontal" id="canvas2"></canvas>
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</div>
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<br>Flipped horizontally
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</div>
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<div class ="container">
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<div class ="horizontal">
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<canvas class="horizontal" id="canvas3"></canvas>
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</div>
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<br>Rotated 180°
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</div>
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<div class ="container">
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<div class ="horizontal">
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<canvas class="horizontal" id="canvas4"></canvas>
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</div>
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<br>Flipped vertically
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</div>
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<br>
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<div class ="container">
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<div class ="vertical">
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<canvas class="vertical" id="canvas5"></canvas>
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</div>
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<br>Rotated 90° CCW and flipped vertically
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</div>
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<div class ="container">
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<div class ="vertical">
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<canvas class="vertical" id="canvas6"></canvas>
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</div>
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<br>Rotated 90° CCW
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</div>
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<div class ="container">
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<div class ="vertical">
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<canvas class="vertical" id="canvas7"></canvas>
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</div>
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<br>Rotated 90° CW and flipped vertically
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</div>
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<div class ="container">
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<div class ="vertical">
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<canvas class="vertical" id="canvas8"></canvas>
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</div>
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<br>Rotated 90° CW
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</div>
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<br>
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<div class ="container">
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<div class ="horizontal">
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<canvas class="horizontal" id="canvas9"></canvas>
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</div>
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<br>Undefined (invalid value)
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</div>
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<script>
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if (window.testRunner)
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window.testRunner.waitUntilDone();
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window.onload = function() {
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var names = [
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{ resource: "resources/exif-orientation-1-ul.jpg", id : "canvas1" },
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{ resource: "resources/exif-orientation-2-ur.jpg", id : "canvas2" },
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{ resource: "resources/exif-orientation-3-lr.jpg", id : "canvas3" },
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{ resource: "resources/exif-orientation-4-lol.jpg", id : "canvas4" },
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{ resource: "resources/exif-orientation-5-lu.jpg", id : "canvas5" },
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{ resource: "resources/exif-orientation-6-ru.jpg", id : "canvas6" },
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{ resource: "resources/exif-orientation-7-rl.jpg", id : "canvas7" },
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{ resource: "resources/exif-orientation-8-llo.jpg", id : "canvas8" },
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{ resource: "resources/exif-orientation-9-u.jpg", id : "canvas9" }
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];
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var drawCount = 0;
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names.forEach(function(name) {
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var image = new Image;
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image.src = name.resource;
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image.decode().then(() => {
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let canvas = document.getElementById(name.id);
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canvas.width = image.width;
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canvas.height = image.height;
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let context = canvas.getContext("2d");
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context.drawImage(image, 0, 0, canvas.width, canvas.height);
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if (++drawCount == names.length) {
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if (window.testRunner)
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window.testRunner.notifyDone();
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}
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});
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});
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}
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</script>
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</body>
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