DateReader/index.html at master · SHall21/DateReader · GitHub

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<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
    <title>DateReader</title>
    <base href="./" />
    <link href="css/bootstrap/bootstrap.min.css" rel="stylesheet" />
    <link href="css/app.css" rel="stylesheet" />
    <link href="manifest.json" rel="manifest" />
    <link rel="apple-touch-icon" sizes="512x512" href="icon-512.png" />

    <!-- Start Single Page Apps for GitHub Pages -->
    <script type="text/javascript">
        // Single Page Apps for GitHub Pages
        // https://github.com/rafrex/spa-github-pages
        // Copyright (c) 2016 Rafael Pedicini, licensed under the MIT License
        // ----------------------------------------------------------------------
        // This script checks to see if a redirect is present in the query string
        // and converts it back into the correct url and adds it to the
        // browser's history using window.history.replaceState(...),
        // which won't cause the browser to attempt to load the new url.
        // When the single page app is loaded further down in this file,
        // the correct url will be waiting in the browser's history for
        // the single page app to route accordingly.
        (function (l) {
            if (l.search) {
                var q = {};
                l.search.slice(1).split('&').forEach(function (v) {
                    var a = v.split('=');
                    q[a[0]] = a.slice(1).join('=').replace(/~and~/g, '&');
                });
                if (q.p !== undefined) {
                    window.history.replaceState(null, null,
                        l.pathname.slice(0, -1) + (q.p || '') +
                        (q.q ? ('?' + q.q) : '') +
                        l.hash
                    );
                }
            }
        }(window.location))
    </script>
    <!-- End Single Page Apps for GitHub Pages -->
</head>

<body>
    <app>Loading...</app>

    <div id="blazor-error-ui">
        An unhandled error has occurred.
        <a href="" class="reload">Reload</a>
        <a class="dismiss">🗙</a>
    </div>
    <script src="decode.js"></script>
    <script src="_framework/blazor.webassembly.js" autostart="false"></script>
    <script>
        Blazor.start({
            loadBootResource: function (type, name, defaultUri, integrity) {
                // For framework resources, use the precompressed .br files for faster downloads
                // This is needed only because GitHub pages doesn't natively support Brotli (or even gzip for .dll files)
                if (type !== 'dotnetjs' && location.hostname !== 'localhost') {
                    return (async function () {
                        const response = await fetch(defaultUri + '.br', { cache: 'no-cache' });
                        if (!response.ok) {
                            throw new Error(response.statusText);
                        }
                        const originalResponseBuffer = await response.arrayBuffer();
                        const originalResponseArray = new Int8Array(originalResponseBuffer);
                        const decompressedResponseArray = BrotliDecode(originalResponseArray);
                        const contentType = type === 'dotnetwasm' ? 'application/wasm' : 'application/octet-stream';
                        return new Response(decompressedResponseArray, { headers: { 'content-type': contentType } });
                    })();
                }
            }
        });
    </script>
    <!--Documentation used:
    https://www.kirupa.com/html5/accessing_your_webcam_in_html5.htm -->
    <script>
        function startVideo() {
            var video = document.getElementById('video');

            var supports = navigator.mediaDevices.getSupportedConstraints();
            if (!supports["facingMode"]) {
                alert("DateReader is not supported for this browser");
                return;
            }

            // Documentation used:
            //  - http://detectmobilebrowsers.com/
            //  - https://stackoverflow.com/questions/3514784/what-is-the-best-way-to-detect-a-mobile-device
            //  - https://stackoverflow.com/questions/16805020/how-to-access-the-specific-camera-on-mobile-phone-through-html5

            var isMobile = false; //initiate as false
            // device detection
            if (/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|ipad|iris|kindle|Android|Silk|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino/i.test(navigator.userAgent)
                || /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(navigator.userAgent.substr(0, 4))) {
                isMobile = true;
            }

            if (isMobile) {
                navigator.mediaDevices.getUserMedia({
                    video: {
                        facingMode: { exact: "environment" }
                    }
                })
                    .then(function (stream) {
                        video.srcObject = stream;
                    })
                    .catch(function (err0r) {
                        console.log("Something went wrong!");
                    });
            }
            else {
                navigator.mediaDevices.getUserMedia({ video: true })
                    .then(function (stream) {
                        video.srcObject = stream;
                    })
                    .catch(function (err0r) {
                        console.log("Something went wrong!");
                    });
            }
        }
    </script>
    <!--Documentation used:
    - https://developer.mozilla.org/en-US/docs/Web/API/WebRTC_API/Taking_still_photos -->
    <script>
        function takeSnapshot() {
            video = document.getElementById('video');
            canvas = document.getElementById('canvas');
            photo = document.getElementById('photo');
            var context = canvas.getContext('2d');
            context.drawImage(video, 0, 0, canvas.width, canvas.height);
            var data = canvas.toDataURL('image/png');
            photo.setAttribute('src', data);
            return data;
        }
    </script>
    <script>
        function displayResult(result) {
            document.getElementById('result').innerHTML = result;
        }
    </script>
    <!--Documentation used:
    - https://stackoverflow.com/questions/34242155/how-to-crop-canvas-todataurl
    - https://stackoverflow.com/questions/50794707/how-to-use-azure-custom-vision-service-response-boundingbox-to-plot-shape -->
    <script>
        function cropSnapshot(cropX, cropY, cropWidth, cropHeight) {
            canvas = document.getElementById('canvas');
            photo2 = document.getElementById('photo2');
            // create a temporary canvas sized to the cropped size
            canvas1 = document.getElementById('canvasTemp');
            var ctx1 = canvas1.getContext('2d');
            canvas1.width = cropWidth * canvas.width;
            if (canvas1.width < 50) {
                canvas1.width = 50;
            }
            canvas1.height = cropHeight * canvas.height;
            if (canvas1.height < 50) {
                canvas1.height = 50;
            }
            var x = cropX * canvas.width;
            var y = cropY * canvas.height;
            // use the extended from of drawImage to draw the
            // cropped area to the temp canvas
            ctx1.drawImage(canvas, x, y, canvas1.width, canvas1.height, 0, 0, canvas1.width, canvas1.height);
            // return the .toDataURL of the temp canvas
            var data = canvas1.toDataURL('image/png');
            photo2.setAttribute('src', data);
            return data;
        }
    </script>
</body>

</html>