webcodecamjs
Version:
bercode qrode decoder
201 lines • 7.75 kB
JavaScript
/*!
* WebCodeCamJQuery 2.0.5 javascript Bar-Qr code decoder
* Author: Tóth András
* Web: http://atandrastoth.co.uk
* email: atandrastoth@gmail.com
* Licensed under the MIT license
*/
(function(undefined) {
var scannerLaser = $(".scanner-laser"),
imageUrl = $("#image-url"),
decodeLocal = $("#decode-img"),
play = $("#play"),
scannedImg = $("#scanned-img"),
scannedQR = $("#scanned-QR"),
grabImg = $("#grab-img"),
pause = $("#pause"),
stop = $("#stop"),
contrast = $("#contrast"),
contrastValue = $("#contrast-value"),
zoom = $("#zoom"),
zoomValue = $("#zoom-value"),
brightness = $("#brightness"),
brightnessValue = $("#brightness-value"),
threshold = $("#threshold"),
thresholdValue = $("#threshold-value"),
sharpness = $("#sharpness"),
sharpnessValue = $("#sharpness-value"),
grayscale = $("#grayscale"),
grayscaleValue = $("#grayscale-value"),
flipVertical = $("#flipVertical"),
flipVerticalValue = $("#flipVertical-value"),
flipHorizontal = $("#flipHorizontal"),
flipHorizontalValue = $("#flipHorizontal-value");
var args = {
autoBrightnessValue: 100,
resultFunction: function(res) {
[].forEach.call(scannerLaser, function(el) {
$(el).fadeOut(300, function() {
$(el).fadeIn(300);
});
});
scannedImg.attr('src', res.imgData);
scannedQR.text(res.format + ': ' + res.code);
},
getDevicesError: function(error) {
var p, message = "Error detected with the following parameters:\n";
for (p in error) {
message += (p + ": " + error[p] + "\n");
}
alert(message);
},
getUserMediaError: function(error) {
var p, message = "Error detected with the following parameters:\n";
for (p in error) {
message += (p + ": " + error[p] + "\n");
}
alert(message);
},
cameraError: function(error) {
var p, message = "Error detected with the following parameters:\n";
if (error.name == "NotSupportedError") {
var ans = confirm("Your browser does not support getUserMedia via HTTP!\n(see: https://goo.gl/Y0ZkNV).\n You want to see github demo page in a new window?");
if (ans) {
window.open("https://andrastoth.github.io/webcodecamjs/");
}
} else {
for (p in error) {
message += p + ": " + error[p] + "\n";
}
alert(message);
}
},
cameraSuccess: function() {
grabImg.removeClass("disabled");
}
};
var decoder = $("#webcodecam-canvas").WebCodeCamJQuery(args).data().plugin_WebCodeCamJQuery;
decoder.buildSelectMenu("#camera-select").init();
decodeLocal.on("click", function() {
Page.decodeLocalImage();
});
play.on("click", function() {
scannedQR.text("Scanning ...");
grabImg.removeClass("disabled");
decoder.play();
});
grabImg.on("click", function() {
scannedImg.attr("src", decoder.getLastImageSrc());
});
pause.on("click", function(event) {
scannedQR.text("Paused");
decoder.pause();
});
stop.on("click", function(event) {
grabImg.addClass("disabled");
scannedQR.text("Stopped");
decoder.stop();
});
Page.changeZoom = function(a) {
if (decoder.isInitialized()) {
var value = typeof a !== "undefined" ? parseFloat(a.toPrecision(2)) : zoom.val() / 10;
zoomValue.text(zoomValue.text().split(":")[0] + ": " + value.toString());
decoder.options.zoom = value;
if (typeof a != "undefined") {
zoom.val(a * 10);
}
}
};
Page.changeContrast = function() {
if (decoder.isInitialized()) {
var value = contrast.val();
contrastValue.text(contrastValue.text().split(":")[0] + ": " + value.toString());
decoder.options.contrast = parseFloat(value);
}
};
Page.changeBrightness = function() {
if (decoder.isInitialized()) {
var value = brightness.val();
brightnessValue.text(brightnessValue.text().split(":")[0] + ": " + value.toString());
decoder.options.brightness = parseFloat(value);
}
};
Page.changeThreshold = function() {
if (decoder.isInitialized()) {
var value = threshold.val();
thresholdValue.text(thresholdValue.text().split(":")[0] + ": " + value.toString());
decoder.options.threshold = parseFloat(value);
}
};
Page.changeSharpness = function() {
if (decoder.isInitialized()) {
var value = sharpness.prop("checked");
if (value) {
sharpnessValue.text(sharpnessValue.text().split(":")[0] + ": on");
decoder.options.sharpness = [0, -1, 0, -1, 5, -1, 0, -1, 0];
} else {
sharpnessValue.text(sharpnessValue.text().split(":")[0] + ": off");
decoder.options.sharpness = [];
}
}
};
Page.changeGrayscale = function() {
if (decoder.isInitialized()) {
var value = grayscale.prop("checked");
if (value) {
grayscaleValue.text(grayscaleValue.text().split(":")[0] + ": on");
decoder.options.grayScale = true;
} else {
grayscaleValue.text(grayscaleValue.text().split(":")[0] + ": off");
decoder.options.grayScale = false;
}
}
};
Page.changeVertical = function() {
if (decoder.isInitialized()) {
var value = flipVertical.prop("checked");
if (value) {
flipVerticalValue.text(flipVerticalValue.text().split(":")[0] + ": on");
decoder.options.flipVertical = value;
} else {
flipVerticalValue.text(flipVerticalValue.text().split(":")[0] + ": off");
decoder.options.flipVertical = value;
}
}
};
Page.changeHorizontal = function() {
if (decoder.isInitialized()) {
var value = flipHorizontal.prop("checked");
if (value) {
flipHorizontalValue.text(flipHorizontalValue.text().split(":")[0] + ": on");
decoder.options.flipHorizontal = value;
} else {
flipHorizontalValue.text(flipHorizontalValue.text().split(":")[0] + ": off");
decoder.options.flipHorizontal = value;
}
}
};
Page.decodeLocalImage = function() {
if (decoder.isInitialized()) {
decoder.decodeLocalImage(imageUrl.val());
}
imageUrl.val(null);
};
var getZomm = setInterval(function() {
var a;
try {
a = decoder.getOptimalZoom();
} catch (e) {
a = 0;
}
if (!!a && a !== 0) {
Page.changeZoom(a);
clearInterval(getZomm);
}
}, 500);
$('#camera-select').on('change', function() {
if (decoder.isInitialized()) {
decoder.stop().play();
}
});
}).call(window.Page = window.Page || {});