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| author | Mario <mario@mariovavti.com> | 2020-01-11 10:30:12 +0000 |
|---|---|---|
| committer | Mario <mario@mariovavti.com> | 2020-01-11 10:30:12 +0000 |
| commit | f645c6f3a57bf5f53bbb2bde362b2447f725c977 (patch) | |
| tree | 9b37650aad46296c5d98a55969348ebb4ee2d097 /library/cropperjs/docs/examples/mask-an-image.html | |
| parent | 4c1c6908165e5c4fb1b7238f66764f89faa2301a (diff) | |
| download | volse-hubzilla-f645c6f3a57bf5f53bbb2bde362b2447f725c977.tar.gz volse-hubzilla-f645c6f3a57bf5f53bbb2bde362b2447f725c977.tar.bz2 volse-hubzilla-f645c6f3a57bf5f53bbb2bde362b2447f725c977.zip | |
update cropperjs to the recent version
Diffstat (limited to 'library/cropperjs/docs/examples/mask-an-image.html')
| -rw-r--r-- | library/cropperjs/docs/examples/mask-an-image.html | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/library/cropperjs/docs/examples/mask-an-image.html b/library/cropperjs/docs/examples/mask-an-image.html new file mode 100644 index 000000000..9236ac451 --- /dev/null +++ b/library/cropperjs/docs/examples/mask-an-image.html @@ -0,0 +1,108 @@ +<!DOCTYPE html> +<html lang="en"> +<head> + <meta charset="utf-8"> + <meta http-equiv="x-ua-compatible" content="ie=edge"> + <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"> + <title>Cropper.js</title> + <link rel="stylesheet" href="../css/cropper.css"> + <style> + .container { + margin: 20px auto; + max-width: 640px; + } + + img { + max-width: 100%; + } + + .cropper-view-box, + .cropper-face { + background-color: black; + opacity: 1; + } + + </style> +</head> +<body> + <div class="container"> + <h1>Mask an image (Redaction)</h1> + <h3>Image</h3> + <div> + <img id="image" src="../images/picture.jpg" alt="Picture"> + </div> + <h3>Result</h3> + <p><button type="button" id="button">Mask</button></p> + <div id="result"></div> + </div> + <script src="../js/cropper.js"></script> + <script> + function getMaskedCanvas(sourceCanvas, sourceImage, cropper) { + var canvas = document.createElement('canvas'); + var context = canvas.getContext('2d'); + var maskWidth = cropper.getData().width; + var maskHeight = cropper.getData().height; + var maskTop = cropper.getData().y; + var maskLeft = cropper.getData().x; + var imageWidth = cropper.getImageData().naturalWidth; + var imageHeight = cropper.getImageData().naturalHeight; + var imageLeft = cropper.getImageData().left; + var imageTop = cropper.getImageData().top; + var imageAspect = cropper.getImageData().aspectRatio; + + canvas.width = imageWidth; + canvas.height = imageHeight; + + // Debug + console.log('Image Width: ' + imageWidth + ' Image Height: ' + imageHeight + ' Image Aspect Ratio: ' + imageAspect ); + console.log('Image Left: ' + imageLeft + ' Image Top: ' + imageTop ); + console.log('Mask Width: ' + maskWidth + ' Mask Height: ' + maskHeight + ' Mask Left: ' + maskLeft + ' Mask Top: ' + maskTop); + + context.imageSmoothingEnabled = true; + context.drawImage(image, 0, 0, imageWidth, imageHeight); + context.fillRect(maskLeft, maskTop, maskWidth, maskHeight); + return canvas; + } + + window.addEventListener('DOMContentLoaded', function () { + var image = document.getElementById('image'); + var button = document.getElementById('button'); + var result = document.getElementById('result'); + var croppable = false; + var cropper = new Cropper(image, { + viewMode: 0, + guides: true, + center: true, + highlight: true, + cropBoxMovable: true, + cropBoxResizable: true, + ready: function () { + croppable = true; + }, + }); + + button.onclick = function () { + var croppedCanvas; + var maskedCanvas; + var maskedImage; + + if (!croppable) { + return; + } + + // Crop + croppedCanvas = cropper.getCroppedCanvas(); + + // Mask + maskedCanvas = getMaskedCanvas(croppedCanvas, image, cropper); + + // Show + maskedImage = document.createElement('img'); + maskedImage.src = maskedCanvas.toDataURL(); + result.innerHTML = ''; + result.appendChild(maskedImage); + }; + }); + </script> +</body> +</html> |