Merge branch 'master' into master
Tomáš Hübelbauer
7 years ago
committed by
GitHub
commit
098d78d325
File diff suppressed because one or more lines are too long
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@ -0,0 +1,27 @@
|
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var Quagga = require('../lib/quagga').default;
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|
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var buffer = require('fs').readFileSync('../test/fixtures/code_128/image-001.jpg');
|
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|
||||
decode(buffer);
|
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function decode(buff){
|
||||
Quagga.decodeSingle({
|
||||
src: buff,
|
||||
numOfWorkers: 0,
|
||||
inputStream: {
|
||||
mime: "image/jpeg",
|
||||
size: 800,
|
||||
area: {
|
||||
top: "10%",
|
||||
right: "5%",
|
||||
left: "5%",
|
||||
bottom: "10%"
|
||||
}
|
||||
}
|
||||
}, function(result) {
|
||||
if (result.codeResult) {
|
||||
console.log("result", result.codeResult.code);
|
||||
} else {
|
||||
console.log("not detected");
|
||||
}
|
||||
});
|
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}
|
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@ -1,10 +0,0 @@
|
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i.icon-24-scan{
|
||||
width: 24px;
|
||||
height: 24px;
|
||||
background-image: url("data:image/png;base64,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");
|
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display: inline-block;
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background-repeat: no-repeat;
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line-height: 24px;
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margin-top: 1px;
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vertical-align: text-top;
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}
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@ -1,48 +0,0 @@
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$overlayWidth: $videoWidth;
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$overlayHeadline: 16px;
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$overlayHeadlineMargin: 14px;
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$overlayPadding: 20px;
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$overlayHeight: $videoHeight + $overlayHeadlineMargin + $overlayHeadline;
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.scanner-overlay {
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display: none;
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width: $overlayWidth;
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height: $overlayHeight;
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position: absolute;
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padding: $overlayPadding;
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top: 50%;
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margin-top: -($overlayHeight)/2 - $overlayPadding;
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left: 50%;
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margin-left: -($overlayWidth + 2*$overlayPadding)/2;
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background-color: $overlayBackground;
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@include box-shadow(#333333 0px 4px 10px);
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& > .header{
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position: relative;
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margin-bottom: $overlayHeadlineMargin;
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h4, .close{
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line-height: $overlayHeadline;
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}
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h4{
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margin: 0px;
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padding: 0px;
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}
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.close{
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position: absolute;
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right: 0px;
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top: 0px;
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height: $overlayHeadline;
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width: $overlayHeadline;
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text-align: center;
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font-weight: bold;
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font-size: 14px;
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cursor: pointer;
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}
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}
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& > .body{
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}
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}
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@ -1,3 +0,0 @@
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@import "phone/core";
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@import "phone/viewport";
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@import "phone/overlay";
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@ -1,4 +0,0 @@
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@include tablet {
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/* tablet styles */
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}
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@ -1,17 +0,0 @@
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$tablet_upper: 1024px;
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$phone_upper: 603px;
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@mixin phone {
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@media (max-width: $phone_upper) {
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@content;
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}
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} // @mixin phone
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@mixin tablet {
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@media (min-width: $phone_upper+1) and (max-width: $tablet_upper) {
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@content;
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}
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} // @mixin tablet
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@ -1,7 +0,0 @@
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$background_color: #FFF;
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$overlayBackground: #FFF;
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$videoWidth: 640px;
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$videoHeight: 480px;
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$text-font: Ubuntu, sans-serif;
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$header-font: 'Cabin Condensed', sans-serif;
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@ -1,89 +0,0 @@
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#interactive.viewport{
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width: $videoWidth;
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height: $videoHeight;
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}
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#interactive.viewport canvas, video{
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float: left;
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width: $videoWidth;
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height: $videoHeight;
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&.drawingBuffer{
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margin-left: -$videoWidth;
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}
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}
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.controls {
|
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fieldset {
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border: none;
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}
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.input-group {
|
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float: left;
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input, button {
|
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display: block;
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}
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}
|
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.reader-config-group {
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float: right;
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label {
|
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display: block;
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span {
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width: 11rem;
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display: inline-block;
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text-align: right;
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}
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}
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}
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&:after {
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content:'';
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display: block;
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clear: both;
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}
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}
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|
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#result_strip{
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margin: 10px 0;
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border-top: 1px solid #EEE;
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border-bottom: 1px solid #EEE;
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padding: 10px 0;
|
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|
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& > ul {
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padding: 0;
|
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margin: 0;
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list-style-type: none;
|
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width: auto;
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overflow-x: auto;
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||||
overflow-y: hidden;
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||||
white-space: nowrap;
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& > li{
|
||||
display: inline-block;
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vertical-align: middle;
|
||||
width: $videoWidth/4;
|
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.thumbnail{
|
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padding: 5px;
|
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margin: 4px;
|
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border: 1px dashed #CCC;
|
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|
||||
img{
|
||||
max-width: $videoWidth/4 - 20px;
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}
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.caption{
|
||||
white-space: normal;
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h4{
|
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text-align: center;
|
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word-wrap: break-word;
|
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height: 40px;
|
||||
margin: 0px;
|
||||
}
|
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}
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}
|
||||
}
|
||||
|
||||
&:after{
|
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content: "";
|
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display: table;
|
||||
clear: both;
|
||||
}
|
||||
}
|
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}
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@ -1,55 +0,0 @@
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/* LESS - http://lesscss.org style sheet */
|
||||
/* Palette color codes */
|
||||
/* Palette URL: http://paletton.com/#uid=31g0q0kHZAviRSkrHLOGomVNzac */
|
||||
|
||||
/* Feel free to copy&paste color codes to your application */
|
||||
|
||||
|
||||
/* MIXINS */
|
||||
|
||||
/* As hex codes */
|
||||
|
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$color-primary-0: #FFC600; /* Main Primary color */
|
||||
$color-primary-1: #FFDD69;
|
||||
$color-primary-2: #FFCE22;
|
||||
$color-primary-3: #B78E00;
|
||||
$color-primary-4: #513F00;
|
||||
|
||||
$color-secondary-1-0: #0A4DB7; /* Main Secondary color (1) */
|
||||
$color-secondary-1-1: #6C9CE8;
|
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$color-secondary-1-2: #2E6FD6;
|
||||
$color-secondary-1-3: #073379;
|
||||
$color-secondary-1-4: #021636;
|
||||
|
||||
$color-secondary-2-0: #5809BB; /* Main Secondary color (2) */
|
||||
$color-secondary-2-1: #A36BE9;
|
||||
$color-secondary-2-2: #782DD8;
|
||||
$color-secondary-2-3: #3A077C;
|
||||
$color-secondary-2-4: #190237;
|
||||
|
||||
|
||||
|
||||
/* As RGBa codes */
|
||||
|
||||
$rgba-primary-0: rgba(255,198, 0,1); /* Main Primary color */
|
||||
$rgba-primary-1: rgba(255,221,105,1);
|
||||
$rgba-primary-2: rgba(255,206, 34,1);
|
||||
$rgba-primary-3: rgba(183,142, 0,1);
|
||||
$rgba-primary-4: rgba( 81, 63, 0,1);
|
||||
|
||||
$rgba-secondary-1-0: rgba( 10, 77,183,1); /* Main Secondary color (1) */
|
||||
$rgba-secondary-1-1: rgba(108,156,232,1);
|
||||
$rgba-secondary-1-2: rgba( 46,111,214,1);
|
||||
$rgba-secondary-1-3: rgba( 7, 51,121,1);
|
||||
$rgba-secondary-1-4: rgba( 2, 22, 54,1);
|
||||
|
||||
$rgba-secondary-2-0: rgba( 88, 9,187,1); /* Main Secondary color (2) */
|
||||
$rgba-secondary-2-1: rgba(163,107,233,1);
|
||||
$rgba-secondary-2-2: rgba(120, 45,216,1);
|
||||
$rgba-secondary-2-3: rgba( 58, 7,124,1);
|
||||
$rgba-secondary-2-4: rgba( 25, 2, 55,1);
|
||||
|
||||
|
||||
|
||||
/* Generated by Paletton.com © 2002-2014 */
|
||||
/* http://paletton.com */
|
||||
@ -1 +0,0 @@
|
||||
@import url('http://fonts.googleapis.com/css?family=Ubuntu:400,700|Cabin+Condensed:400,600');
|
||||
@ -1,15 +0,0 @@
|
||||
@include phone {
|
||||
#container{
|
||||
width: 300px;
|
||||
margin: 10px auto;
|
||||
@include box-shadow(none);
|
||||
|
||||
form.voucher-form{
|
||||
input{
|
||||
&.voucher-code{
|
||||
width: 180px;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -1,28 +0,0 @@
|
||||
@include phone {
|
||||
$overlayWidth: $videoWidth;
|
||||
$overlayHeadline: 16px;
|
||||
$overlayHeadlineMargin: 14px;
|
||||
$overlayPadding: 20px;
|
||||
$overlayHeight: $videoHeight + $overlayHeadlineMargin + $overlayHeadline;
|
||||
|
||||
.overlay.scanner {
|
||||
width: $overlayWidth;
|
||||
height: $overlayHeight;
|
||||
padding: $overlayPadding;
|
||||
margin-top: -($overlayHeight)/2 - $overlayPadding;
|
||||
margin-left: -($overlayWidth + 2*$overlayPadding)/2;
|
||||
background-color: $overlayBackground;
|
||||
@include box-shadow(none);
|
||||
|
||||
& > .header{
|
||||
margin-bottom: $overlayHeadlineMargin;
|
||||
h4, .close{
|
||||
line-height: $overlayHeadline;
|
||||
}
|
||||
.close{
|
||||
height: $overlayHeadline;
|
||||
width: $overlayHeadline;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -1,42 +0,0 @@
|
||||
@include phone {
|
||||
$videoWidth: 300px;
|
||||
$videoHeight: 400px;
|
||||
|
||||
#interactive.viewport{
|
||||
width: $videoWidth;
|
||||
height: $videoWidth;
|
||||
overflow: hidden;
|
||||
}
|
||||
|
||||
#interactive.viewport canvas, video{
|
||||
margin-top: ($videoWidth - $videoHeight)/2;
|
||||
width: $videoWidth;
|
||||
height: $videoHeight;
|
||||
&.drawingBuffer{
|
||||
margin-left: -$videoWidth;
|
||||
}
|
||||
}
|
||||
|
||||
#result_strip{
|
||||
margin-top: 5px;
|
||||
padding-top: 5px;
|
||||
ul.thumbnails{
|
||||
& > li{
|
||||
width: $videoWidth/2;
|
||||
.thumbnail{
|
||||
.imgWrapper{
|
||||
width: $videoWidth/2 - 20px;
|
||||
height: $videoWidth/2 - 20px;
|
||||
overflow: hidden;
|
||||
img{
|
||||
margin-top: (($videoWidth/2 - 20px) - ($videoHeight/2 - 20px))/2;
|
||||
width: $videoWidth/2 - 20px;
|
||||
height: $videoHeight/2 - 20px;
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -1,14 +0,0 @@
|
||||
|
||||
@import "compass/css3";
|
||||
@import "variables";
|
||||
@import "utility";
|
||||
|
||||
/* usual styles */
|
||||
|
||||
@import "fonts";
|
||||
@import "viewport";
|
||||
@import "overlay";
|
||||
@import "icons";
|
||||
|
||||
@import "tablet";
|
||||
@import "phone";
|
||||
@ -1,56 +0,0 @@
|
||||
@import "compass/css3";
|
||||
@import "variables";
|
||||
@import "utility";
|
||||
|
||||
/* usual styles */
|
||||
@import "colors";
|
||||
@import "fonts";
|
||||
@import "viewport";
|
||||
@import "overlay";
|
||||
@import "icons";
|
||||
|
||||
@import "tablet";
|
||||
@import "phone";
|
||||
|
||||
body{
|
||||
background-color: #FFF;
|
||||
margin: 0px;
|
||||
font-family: $text-font;
|
||||
color: #1e1e1e;
|
||||
font-weight: normal;
|
||||
padding-top: 0;
|
||||
}
|
||||
|
||||
h1,h2,h3,h4 {
|
||||
font-family: $header-font;
|
||||
}
|
||||
|
||||
header {
|
||||
background: $color-primary-0;
|
||||
padding: 1em;
|
||||
.headline {
|
||||
width: 640px;
|
||||
margin: 0 auto;
|
||||
h1 {
|
||||
color: $color-primary-1;
|
||||
font-size: 3em;
|
||||
margin-bottom: 0;
|
||||
}
|
||||
h2 {
|
||||
margin-top: 0.2em;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
footer {
|
||||
background: $color-secondary-1-0;
|
||||
color: $color-secondary-1-1;
|
||||
padding: 1em 2em 2em;
|
||||
}
|
||||
|
||||
#container{
|
||||
width: 640px;
|
||||
margin: 20px auto;
|
||||
padding: 10px;
|
||||
}
|
||||
|
||||
File diff suppressed because one or more lines are too long
@ -0,0 +1,257 @@
|
||||
import BarcodeReader from './barcode_reader';
|
||||
|
||||
function TwoOfFiveReader(opts) {
|
||||
BarcodeReader.call(this, opts);
|
||||
this.barSpaceRatio = [1, 1];
|
||||
}
|
||||
|
||||
var N = 1,
|
||||
W = 3,
|
||||
properties = {
|
||||
START_PATTERN: {value: [W, N, W, N, N, N]},
|
||||
STOP_PATTERN: {value: [W, N, N, N, W]},
|
||||
CODE_PATTERN: {value: [
|
||||
[N, N, W, W, N],
|
||||
[W, N, N, N, W],
|
||||
[N, W, N, N, W],
|
||||
[W, W, N, N, N],
|
||||
[N, N, W, N, W],
|
||||
[W, N, W, N, N],
|
||||
[N, W, W, N, N],
|
||||
[N, N, N, W, W],
|
||||
[W, N, N, W, N],
|
||||
[N, W, N, W, N]
|
||||
]},
|
||||
SINGLE_CODE_ERROR: {value: 0.78, writable: true},
|
||||
AVG_CODE_ERROR: {value: 0.30, writable: true},
|
||||
FORMAT: {value: "2of5"}
|
||||
};
|
||||
|
||||
const startPatternLength = properties.START_PATTERN.value.reduce((sum, val) => sum + val, 0);
|
||||
|
||||
TwoOfFiveReader.prototype = Object.create(BarcodeReader.prototype, properties);
|
||||
TwoOfFiveReader.prototype.constructor = TwoOfFiveReader;
|
||||
|
||||
TwoOfFiveReader.prototype._findPattern = function(pattern, offset, isWhite, tryHarder) {
|
||||
var counter = [],
|
||||
self = this,
|
||||
i,
|
||||
counterPos = 0,
|
||||
bestMatch = {
|
||||
error: Number.MAX_VALUE,
|
||||
code: -1,
|
||||
start: 0,
|
||||
end: 0
|
||||
},
|
||||
error,
|
||||
j,
|
||||
sum,
|
||||
epsilon = self.AVG_CODE_ERROR;
|
||||
|
||||
isWhite = isWhite || false;
|
||||
tryHarder = tryHarder || false;
|
||||
|
||||
if (!offset) {
|
||||
offset = self._nextSet(self._row);
|
||||
}
|
||||
|
||||
for ( i = 0; i < pattern.length; i++) {
|
||||
counter[i] = 0;
|
||||
}
|
||||
|
||||
for ( i = offset; i < self._row.length; i++) {
|
||||
if (self._row[i] ^ isWhite) {
|
||||
counter[counterPos]++;
|
||||
} else {
|
||||
if (counterPos === counter.length - 1) {
|
||||
sum = 0;
|
||||
for ( j = 0; j < counter.length; j++) {
|
||||
sum += counter[j];
|
||||
}
|
||||
error = self._matchPattern(counter, pattern);
|
||||
if (error < epsilon) {
|
||||
bestMatch.error = error;
|
||||
bestMatch.start = i - sum;
|
||||
bestMatch.end = i;
|
||||
return bestMatch;
|
||||
}
|
||||
if (tryHarder) {
|
||||
for (j = 0; j < counter.length - 2; j++) {
|
||||
counter[j] = counter[j + 2];
|
||||
}
|
||||
counter[counter.length - 2] = 0;
|
||||
counter[counter.length - 1] = 0;
|
||||
counterPos--;
|
||||
} else {
|
||||
return null;
|
||||
}
|
||||
} else {
|
||||
counterPos++;
|
||||
}
|
||||
counter[counterPos] = 1;
|
||||
isWhite = !isWhite;
|
||||
}
|
||||
}
|
||||
return null;
|
||||
};
|
||||
|
||||
TwoOfFiveReader.prototype._findStart = function() {
|
||||
var self = this,
|
||||
leadingWhitespaceStart,
|
||||
offset = self._nextSet(self._row),
|
||||
startInfo,
|
||||
narrowBarWidth = 1;
|
||||
|
||||
while (!startInfo) {
|
||||
startInfo = self._findPattern(self.START_PATTERN, offset, false, true);
|
||||
if (!startInfo) {
|
||||
return null;
|
||||
}
|
||||
narrowBarWidth = Math.floor((startInfo.end - startInfo.start) / startPatternLength);
|
||||
leadingWhitespaceStart = startInfo.start - narrowBarWidth * 5;
|
||||
if (leadingWhitespaceStart >= 0) {
|
||||
if (self._matchRange(leadingWhitespaceStart, startInfo.start, 0)) {
|
||||
return startInfo;
|
||||
}
|
||||
}
|
||||
offset = startInfo.end;
|
||||
startInfo = null;
|
||||
}
|
||||
};
|
||||
|
||||
TwoOfFiveReader.prototype._verifyTrailingWhitespace = function(endInfo) {
|
||||
var self = this,
|
||||
trailingWhitespaceEnd;
|
||||
|
||||
trailingWhitespaceEnd = endInfo.end + ((endInfo.end - endInfo.start) / 2);
|
||||
if (trailingWhitespaceEnd < self._row.length) {
|
||||
if (self._matchRange(endInfo.end, trailingWhitespaceEnd, 0)) {
|
||||
return endInfo;
|
||||
}
|
||||
}
|
||||
return null;
|
||||
};
|
||||
|
||||
TwoOfFiveReader.prototype._findEnd = function() {
|
||||
var self = this,
|
||||
endInfo,
|
||||
tmp,
|
||||
offset;
|
||||
|
||||
self._row.reverse();
|
||||
offset = self._nextSet(self._row);
|
||||
endInfo = self._findPattern(self.STOP_PATTERN, offset, false, true);
|
||||
self._row.reverse();
|
||||
|
||||
if (endInfo === null) {
|
||||
return null;
|
||||
}
|
||||
|
||||
// reverse numbers
|
||||
tmp = endInfo.start;
|
||||
endInfo.start = self._row.length - endInfo.end;
|
||||
endInfo.end = self._row.length - tmp;
|
||||
|
||||
return endInfo !== null ? self._verifyTrailingWhitespace(endInfo) : null;
|
||||
};
|
||||
|
||||
TwoOfFiveReader.prototype._decodeCode = function(counter) {
|
||||
var j,
|
||||
self = this,
|
||||
sum = 0,
|
||||
normalized,
|
||||
error,
|
||||
epsilon = self.AVG_CODE_ERROR,
|
||||
code,
|
||||
bestMatch = {
|
||||
error: Number.MAX_VALUE,
|
||||
code: -1,
|
||||
start: 0,
|
||||
end: 0
|
||||
};
|
||||
|
||||
for ( j = 0; j < counter.length; j++) {
|
||||
sum += counter[j];
|
||||
}
|
||||
for (code = 0; code < self.CODE_PATTERN.length; code++) {
|
||||
error = self._matchPattern(counter, self.CODE_PATTERN[code]);
|
||||
if (error < bestMatch.error) {
|
||||
bestMatch.code = code;
|
||||
bestMatch.error = error;
|
||||
}
|
||||
}
|
||||
if (bestMatch.error < epsilon) {
|
||||
return bestMatch;
|
||||
}
|
||||
};
|
||||
|
||||
TwoOfFiveReader.prototype._decodePayload = function(counters, result, decodedCodes) {
|
||||
var i,
|
||||
self = this,
|
||||
pos = 0,
|
||||
counterLength = counters.length,
|
||||
counter = [0, 0, 0, 0, 0],
|
||||
code;
|
||||
|
||||
while (pos < counterLength) {
|
||||
for (i = 0; i < 5; i++) {
|
||||
counter[i] = counters[pos] * this.barSpaceRatio[0];
|
||||
pos += 2;
|
||||
}
|
||||
code = self._decodeCode(counter);
|
||||
if (!code) {
|
||||
return null;
|
||||
}
|
||||
result.push(code.code + "");
|
||||
decodedCodes.push(code);
|
||||
}
|
||||
return code;
|
||||
};
|
||||
|
||||
TwoOfFiveReader.prototype._verifyCounterLength = function(counters) {
|
||||
return (counters.length % 10 === 0);
|
||||
};
|
||||
|
||||
TwoOfFiveReader.prototype._decode = function() {
|
||||
var startInfo,
|
||||
endInfo,
|
||||
self = this,
|
||||
code,
|
||||
result = [],
|
||||
decodedCodes = [],
|
||||
counters;
|
||||
|
||||
startInfo = self._findStart();
|
||||
if (!startInfo) {
|
||||
return null;
|
||||
}
|
||||
decodedCodes.push(startInfo);
|
||||
|
||||
endInfo = self._findEnd();
|
||||
if (!endInfo) {
|
||||
return null;
|
||||
}
|
||||
|
||||
counters = self._fillCounters(startInfo.end, endInfo.start, false);
|
||||
if (!self._verifyCounterLength(counters)) {
|
||||
return null;
|
||||
}
|
||||
code = self._decodePayload(counters, result, decodedCodes);
|
||||
if (!code) {
|
||||
return null;
|
||||
}
|
||||
if (result.length < 5) {
|
||||
return null;
|
||||
}
|
||||
|
||||
decodedCodes.push(endInfo);
|
||||
return {
|
||||
code: result.join(""),
|
||||
start: startInfo.start,
|
||||
end: endInfo.end,
|
||||
startInfo: startInfo,
|
||||
decodedCodes: decodedCodes
|
||||
};
|
||||
};
|
||||
|
||||
export default TwoOfFiveReader;
|
||||
@ -0,0 +1,251 @@
|
||||
import BarcodeReader from './barcode_reader';
|
||||
import ArrayHelper from '../common/array_helper';
|
||||
|
||||
function Code93Reader() {
|
||||
BarcodeReader.call(this);
|
||||
}
|
||||
|
||||
const ALPHABETH_STRING = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%abcd*";
|
||||
|
||||
var properties = {
|
||||
ALPHABETH_STRING: {value: ALPHABETH_STRING},
|
||||
ALPHABET: {value: ALPHABETH_STRING.split('').map(char => char.charCodeAt(0))},
|
||||
CHARACTER_ENCODINGS: {value: [
|
||||
0x114, 0x148, 0x144, 0x142, 0x128, 0x124, 0x122, 0x150, 0x112, 0x10A,
|
||||
0x1A8, 0x1A4, 0x1A2, 0x194, 0x192, 0x18A, 0x168, 0x164, 0x162, 0x134,
|
||||
0x11A, 0x158, 0x14C, 0x146, 0x12C, 0x116, 0x1B4, 0x1B2, 0x1AC, 0x1A6,
|
||||
0x196, 0x19A, 0x16C, 0x166, 0x136, 0x13A, 0x12E, 0x1D4, 0x1D2, 0x1CA,
|
||||
0x16E, 0x176, 0x1AE, 0x126, 0x1DA, 0x1D6, 0x132, 0x15E
|
||||
]},
|
||||
ASTERISK: {value: 0x15E},
|
||||
FORMAT: {value: "code_93", writeable: false}
|
||||
};
|
||||
|
||||
Code93Reader.prototype = Object.create(BarcodeReader.prototype, properties);
|
||||
Code93Reader.prototype.constructor = Code93Reader;
|
||||
|
||||
Code93Reader.prototype._decode = function() {
|
||||
var self = this,
|
||||
counters = [0, 0, 0, 0, 0, 0],
|
||||
result = [],
|
||||
start = self._findStart(),
|
||||
decodedChar,
|
||||
lastStart,
|
||||
pattern,
|
||||
nextStart;
|
||||
|
||||
if (!start) {
|
||||
return null;
|
||||
}
|
||||
nextStart = self._nextSet(self._row, start.end);
|
||||
|
||||
do {
|
||||
counters = self._toCounters(nextStart, counters);
|
||||
pattern = self._toPattern(counters);
|
||||
if (pattern < 0) {
|
||||
return null;
|
||||
}
|
||||
decodedChar = self._patternToChar(pattern);
|
||||
if (decodedChar < 0){
|
||||
return null;
|
||||
}
|
||||
result.push(decodedChar);
|
||||
lastStart = nextStart;
|
||||
nextStart += ArrayHelper.sum(counters);
|
||||
nextStart = self._nextSet(self._row, nextStart);
|
||||
} while (decodedChar !== '*');
|
||||
result.pop();
|
||||
|
||||
if (!result.length) {
|
||||
return null;
|
||||
}
|
||||
|
||||
if (!self._verifyEnd(lastStart, nextStart, counters)) {
|
||||
return null;
|
||||
}
|
||||
|
||||
if (!self._verifyChecksums(result)) {
|
||||
return null;
|
||||
}
|
||||
|
||||
result = result.slice(0, result.length - 2);
|
||||
if ((result = self._decodeExtended(result)) === null) {
|
||||
return null;
|
||||
};
|
||||
|
||||
return {
|
||||
code: result.join(""),
|
||||
start: start.start,
|
||||
end: nextStart,
|
||||
startInfo: start,
|
||||
decodedCodes: result
|
||||
};
|
||||
};
|
||||
|
||||
Code93Reader.prototype._verifyEnd = function(lastStart, nextStart) {
|
||||
if (lastStart === nextStart || !this._row[nextStart]) {
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
};
|
||||
|
||||
Code93Reader.prototype._patternToChar = function(pattern) {
|
||||
var i,
|
||||
self = this;
|
||||
|
||||
for (i = 0; i < self.CHARACTER_ENCODINGS.length; i++) {
|
||||
if (self.CHARACTER_ENCODINGS[i] === pattern) {
|
||||
return String.fromCharCode(self.ALPHABET[i]);
|
||||
}
|
||||
}
|
||||
return -1;
|
||||
};
|
||||
|
||||
Code93Reader.prototype._toPattern = function(counters) {
|
||||
const numCounters = counters.length;
|
||||
let pattern = 0;
|
||||
let sum = 0;
|
||||
for (let i = 0; i < numCounters; i++) {
|
||||
sum += counters[i];
|
||||
}
|
||||
|
||||
for (let i = 0; i < numCounters; i++) {
|
||||
let normalized = Math.round(counters[i] * 9 / sum);
|
||||
if (normalized < 1 || normalized > 4) {
|
||||
return -1;
|
||||
}
|
||||
if ((i & 1) === 0) {
|
||||
for (let j = 0; j < normalized; j++) {
|
||||
pattern = (pattern << 1) | 1;
|
||||
}
|
||||
} else {
|
||||
pattern <<= normalized;
|
||||
}
|
||||
}
|
||||
|
||||
return pattern;
|
||||
};
|
||||
|
||||
Code93Reader.prototype._findStart = function() {
|
||||
var self = this,
|
||||
offset = self._nextSet(self._row),
|
||||
patternStart = offset,
|
||||
counter = [0, 0, 0, 0, 0, 0],
|
||||
counterPos = 0,
|
||||
isWhite = false,
|
||||
i,
|
||||
j,
|
||||
whiteSpaceMustStart;
|
||||
|
||||
for ( i = offset; i < self._row.length; i++) {
|
||||
if (self._row[i] ^ isWhite) {
|
||||
counter[counterPos]++;
|
||||
} else {
|
||||
if (counterPos === counter.length - 1) {
|
||||
// find start pattern
|
||||
if (self._toPattern(counter) === self.ASTERISK) {
|
||||
whiteSpaceMustStart = Math.floor(Math.max(0, patternStart - ((i - patternStart) / 4)));
|
||||
if (self._matchRange(whiteSpaceMustStart, patternStart, 0)) {
|
||||
return {
|
||||
start: patternStart,
|
||||
end: i
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
patternStart += counter[0] + counter[1];
|
||||
for ( j = 0; j < 4; j++) {
|
||||
counter[j] = counter[j + 2];
|
||||
}
|
||||
counter[4] = 0;
|
||||
counter[5] = 0;
|
||||
counterPos--;
|
||||
} else {
|
||||
counterPos++;
|
||||
}
|
||||
counter[counterPos] = 1;
|
||||
isWhite = !isWhite;
|
||||
}
|
||||
}
|
||||
return null;
|
||||
};
|
||||
|
||||
Code93Reader.prototype._decodeExtended = function(charArray) {
|
||||
const length = charArray.length;
|
||||
const result = [];
|
||||
for (let i = 0; i < length; i++) {
|
||||
const char = charArray[i];
|
||||
if (char >= 'a' && char <= 'd') {
|
||||
if (i > (length - 2)) {
|
||||
return null;
|
||||
}
|
||||
const nextChar = charArray[++i];
|
||||
const nextCharCode = nextChar.charCodeAt(0);
|
||||
let decodedChar;
|
||||
switch (char) {
|
||||
case 'a':
|
||||
if (nextChar >= 'A' && nextChar <= 'Z') {
|
||||
decodedChar = String.fromCharCode(nextCharCode - 64);
|
||||
} else {
|
||||
return null;
|
||||
}
|
||||
break;
|
||||
case 'b':
|
||||
if (nextChar >= 'A' && nextChar <= 'E') {
|
||||
decodedChar = String.fromCharCode(nextCharCode - 38);
|
||||
} else if (nextChar >= 'F' && nextChar <= 'J') {
|
||||
decodedChar = String.fromCharCode(nextCharCode - 11);
|
||||
} else if (nextChar >= 'K' && nextChar <= 'O') {
|
||||
decodedChar = String.fromCharCode(nextCharCode + 16);
|
||||
} else if (nextChar >= 'P' && nextChar <= 'S') {
|
||||
decodedChar = String.fromCharCode(nextCharCode + 43);
|
||||
} else if (nextChar >= 'T' && nextChar <= 'Z') {
|
||||
decodedChar = String.fromCharCode(127);
|
||||
} else {
|
||||
return null;
|
||||
}
|
||||
break;
|
||||
case 'c':
|
||||
if (nextChar >= 'A' && nextChar <= 'O') {
|
||||
decodedChar = String.fromCharCode(nextCharCode - 32);
|
||||
} else if (nextChar === 'Z') {
|
||||
decodedChar = ':';
|
||||
} else {
|
||||
return null;
|
||||
}
|
||||
break;
|
||||
case 'd':
|
||||
if (nextChar >= 'A' && nextChar <= 'Z') {
|
||||
decodedChar = String.fromCharCode(nextCharCode + 32);
|
||||
} else {
|
||||
return null;
|
||||
}
|
||||
break;
|
||||
}
|
||||
result.push(decodedChar);
|
||||
} else {
|
||||
result.push(char);
|
||||
}
|
||||
}
|
||||
return result;
|
||||
};
|
||||
|
||||
Code93Reader.prototype._verifyChecksums = function(charArray) {
|
||||
return this._matchCheckChar(charArray, charArray.length - 2, 20)
|
||||
&& this._matchCheckChar(charArray, charArray.length - 1, 15);
|
||||
};
|
||||
|
||||
Code93Reader.prototype._matchCheckChar = function(charArray, index, maxWeight) {
|
||||
const arrayToCheck = charArray.slice(0, index);
|
||||
const length = arrayToCheck.length;
|
||||
const weightedSums = arrayToCheck.reduce((sum, char, i) => {
|
||||
const weight = (((i * -1) + (length - 1)) % maxWeight) + 1;
|
||||
const value = this.ALPHABET.indexOf(char.charCodeAt(0));
|
||||
return sum + (weight * value);
|
||||
}, 0);
|
||||
|
||||
const checkChar = this.ALPHABET[(weightedSums % 47)];
|
||||
return checkChar === charArray[index].charCodeAt(0);
|
||||
};
|
||||
|
||||
export default Code93Reader;
|
||||
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Reference in New Issue