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| author | Mario Vavti <mario@mariovavti.com> | 2018-01-24 11:17:25 +0100 |
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| committer | Mario Vavti <mario@mariovavti.com> | 2018-01-24 11:17:25 +0100 |
| commit | 503b2225f03c5ffe663e4e0955b25daa1bd19cf4 (patch) | |
| tree | 666488330ddaeeb02bff5bd674534972aabc69b4 /library/cropperjs/examples/mask-an-image.html | |
| parent | e3a6b0012e95aae8e0572a53ea96ddc915d6eb03 (diff) | |
| parent | 304085606fac6ae4fd2d3e29ed44afb4b4e1bc28 (diff) | |
| download | volse-hubzilla-503b2225f03c5ffe663e4e0955b25daa1bd19cf4.tar.gz volse-hubzilla-503b2225f03c5ffe663e4e0955b25daa1bd19cf4.tar.bz2 volse-hubzilla-503b2225f03c5ffe663e4e0955b25daa1bd19cf4.zip | |
Merge remote-tracking branch 'mike/master' into dev
Diffstat (limited to 'library/cropperjs/examples/mask-an-image.html')
| -rw-r--r-- | library/cropperjs/examples/mask-an-image.html | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/library/cropperjs/examples/mask-an-image.html b/library/cropperjs/examples/mask-an-image.html new file mode 100644 index 000000000..d821da43b --- /dev/null +++ b/library/cropperjs/examples/mask-an-image.html @@ -0,0 +1,123 @@ +<!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="../dist/cropper.css"> + <style> + .container { + max-width: 640px; + margin: 20px auto; + } + + 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="../docs/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="../dist/cropper.js"></script> + <script> + (function () { + + 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 roundedCanvas; + var roundedImage; + + 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> |