46 lines
1.5 KiB
JavaScript
46 lines
1.5 KiB
JavaScript
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function getRoundedCanvas(sourceCanvas) {
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var canvas = document.createElement('canvas');
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var context = canvas.getContext('2d');
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var width = sourceCanvas.width;
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var height = sourceCanvas.height;
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canvas.width = width;
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canvas.height = height;
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context.imageSmoothingEnabled = true;
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context.drawImage(sourceCanvas, 0, 0, width, height);
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context.globalCompositeOperation = 'destination-in';
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context.beginPath();
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context.arc(width / 2, height / 2, Math.min(width, height) / 2, 0, 2 * Math.PI, true);
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context.fill();
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return canvas;
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}
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var input = document.getElementById('form_avatar')
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var container = document.getElementById('img-container')
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var cropImage = document.getElementById('img-cropped')
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var cropped = document.getElementById('form_hidden')
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input.addEventListener('change', function (e) {
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if (!input.files || !input.files[0]) return;
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var reader = new FileReader()
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reader.onload = function (e) {
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container.style = 'display: block'
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cropImage.setAttribute('src', e.target.result)
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function update() {
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var croppedCanvas = cropper.getCroppedCanvas()
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var roundedCanvas = getRoundedCanvas(croppedCanvas)
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cropped.value = roundedCanvas.toDataURL()
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input.files = undefined
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}
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var cropper = new Cropper(cropImage, {
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aspectRatio: 1,
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viewMode: 1,
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cropend: update,
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ready: update,
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})
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}
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reader.readAsDataURL(input.files[0])
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})
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