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index.html
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executable file
·472 lines (436 loc) · 16.9 KB
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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=0" />
<link rel="stylesheet" href="css/normalize.css">
<link rel="stylesheet" href="css/skeleton.css">
<link rel="stylesheet" href="css/tabs.css">
</head>
<body>
<div class="container">
<div class="row">
<div class="six columns">
<div id="scanner" style="left:0;top:0;width:100%;height:100%;min-width:100px;min-height:400px;background:#eee;position:relative;">
<svg class="dbrScanner-bg-loading" style="display:none;animation:1s linear infinite dbrScanner-rotate;width:40%;height:40%;position:absolute;margin:auto;left:0;top:0;right:0;bottom:0;fill:#aaa;" viewBox="0 0 1792 1792"><path d="M1760 896q0 176-68.5 336t-184 275.5-275.5 184-336 68.5-336-68.5-275.5-184-184-275.5-68.5-336q0-213 97-398.5t265-305.5 374-151v228q-221 45-366.5 221t-145.5 406q0 130 51 248.5t136.5 204 204 136.5 248.5 51 248.5-51 204-136.5 136.5-204 51-248.5q0-230-145.5-406t-366.5-221v-228q206 31 374 151t265 305.5 97 398.5z"/></svg>
<svg class="dbrScanner-bg-camera" style="display:none;width:40%;height:40%;position:absolute;margin:auto;left:0;top:0;right:0;bottom:0;fill:#aaa;" viewBox="0 0 2048 1792"><path d="M1024 672q119 0 203.5 84.5t84.5 203.5-84.5 203.5-203.5 84.5-203.5-84.5-84.5-203.5 84.5-203.5 203.5-84.5zm704-416q106 0 181 75t75 181v896q0 106-75 181t-181 75h-1408q-106 0-181-75t-75-181v-896q0-106 75-181t181-75h224l51-136q19-49 69.5-84.5t103.5-35.5h512q53 0 103.5 35.5t69.5 84.5l51 136h224zm-704 1152q185 0 316.5-131.5t131.5-316.5-131.5-316.5-316.5-131.5-316.5 131.5-131.5 316.5 131.5 316.5 316.5 131.5z"/></svg>
<video class="dbrScanner-video" playsinline="true" style="width:100%;height:100%;position:absolute;left:0;top:0;"></video>
<canvas class="dbrScanner-cvs-drawarea" style="width:100%;height:100%;position:absolute;left:0;top:0;"></canvas>
<div class="dbrScanner-cvs-scanarea" style="width:100%;height:100%;position:absolute;left:0;top:0;">
<div class="dbrScanner-scanlight" style="width:100%;height:3%;position:absolute;animation:3s infinite dbrScanner-scanlight;border-radius:50%;box-shadow:0px 0px 2vw 1px #00e5ff;background:#fff;display:none;"></div>
</div>
<select class="dbrScanner-sel-camera" style="margin:0 auto;position:absolute;left:0;top:0;height:30px;"></select>
<select class="dbrScanner-sel-resolution" style="position:absolute;left:0;top:30px;"></select>
<button class="dbrScanner-btn-close" style="position:absolute;right:0;top:0;">
<svg width="16" height="16" viewBox="0 0 1792 1792" xmlns="http://www.w3.org/2000/svg"><path d="M1490 1322q0 40-28 68l-136 136q-28 28-68 28t-68-28l-294-294-294 294q-28 28-68 28t-68-28l-136-136q-28-28-28-68t28-68l294-294-294-294q-28-28-28-68t28-68l136-136q28-28 68-28t68 28l294 294 294-294q28-28 68-28t68 28l136 136q28 28 28 68t-28 68l-294 294 294 294q28 28 28 68z"/></svg>
</button>
</div>
<div id="imgContainer" style="overflow-x:auto;max-height:350px;"><p>Image(s):</p><p id="extra_msg"></p></div>
</div>
<div class="six columns">
<div class="tab" style="display:flex;overflow-x:auto">
<button class="tablinks" onclick="switchTab(event, 'camera')">Camera</button>
<button class="tablinks" onclick="switchTab(event, 'local')">Local</button>
<button class="tablinks" onclick="switchTab(event, 'result')">Result</button>
<button class="tablinks" onclick="switchTab(event, 'settings')">Settings</button>
<button class="tablinks" onclick="switchTab(event, 'template')">Template</button>
</div>
<div>
<div id="camera" class="tabcontent">
<button id="btn-show-scanner" onclick="showVideo()">Show scanner</button>
<label for="capturebox">
<input id="capturebox" type="checkbox" onchange="switchCaptureBox(this.checked)" checked>Show capture box</label>
<label for="fullscreen">
<input id="fullscreen" type="checkbox" onchange="onFullScreen()">Full Screen</label>
</div>
<div id="local" class="tabcontent">
Choose image(s) to decode:
<input id="ipt-file" type="file" onchange="onFileChosen(event)" multiple accept="image/png,image/jpeg,image/bmp,image/gif">
<button id="btn-decode-images" onclick="decodeImg()">Decode</button>
<div id="localStatus"></div>
</div>
<div id="result" class="tabcontent">
<div id="timeElapsed"></div>
<div id="resultList"></div>
</div>
<div id="settings" class="tabcontent">
<label for="usebuiltin">
<input name="usebuiltin" id="usebuiltin" type="checkbox" checked>Use Built-in Mode</label>
<label for="speed">
<input name="builtinMode" id="speed" type="radio">Speed</label>
<label for="balance">
<input name="builtinMode" id="balance" type="radio" checked>Balance</label>
<label for="coverage">
<input name="builtinMode" id="coverage" type="radio">Coverage</label>
</div>
<div id="template" class="tabcontent">
User defined template:
<select id="templateSelect" onchange="onTemplateChanged()" size="1">
<option value="none">none</option>
<option value="scan.json">scan</option>
<option value="local.json">local</option>
<option value="coverage.json">coverage</option>
</select>
<textarea id="templateTextarea" style="width:100%;"></textarea>
</div>
</div>
</div>
</div>
</div>
<!-- Please visit https://www.dynamsoft.com/customer/license/trialLicense to get a trial license. -->
<script src="https://cdn.jsdelivr.net/npm/dynamsoft-javascript-barcode@8.4.0/dist/dbr.js"></script>
<script>
Dynamsoft.DBR.BarcodeReader._bUseFullFeature = true; // Control of loading min wasm or full wasm.
Dynamsoft.DBR.BarcodeScanner.organizationID = "100180174";
// reader for decoding picture
let reader = null;
// scanner for decoding video
let scanner = null;
switchTab(null, 'camera')
showVideo();
function switchTab(evt, tabName) {
if (tabName=="camera"){
document.getElementById("imgContainer").style.display="none";
if (document.getElementById("fullscreen").checked==false){
document.getElementById("scanner").style.display="";
}
}else if (tabName=="local"){
document.getElementById("imgContainer").style.display="";
document.getElementById("scanner").style.display="none";
} else{
if (scanner.isOpen()){
document.getElementById("scanner").style.display="";
document.getElementById("imgContainer").style.display="none";
} else{
document.getElementById("scanner").style.display="none";
document.getElementById("imgContainer").style.display="";
}
}
var i, tabcontent, tablinks;
tabcontent = document.getElementsByClassName("tabcontent");
for (i = 0; i < tabcontent.length; i++) {
tabcontent[i].style.display = "none";
}
tablinks = document.getElementsByClassName("tablinks");
for (i = 0; i < tablinks.length; i++) {
tablinks[i].className = tablinks[i].className.replace(" active", "");
}
document.getElementById(tabName).style.display = "block";
if (evt != null){
evt.currentTarget.className += " active";
}
}
function updateRuntimeSettingsFromTemplateIfExists(readerOrScanner){
try{
var ta= document.getElementById("templateTextarea");
if (ta.value!="" && document.getElementById("usebuiltin").checked==false){
console.log("using template");
readerOrScanner.initRuntimeSettingsWithString(ta.value);
} else{
readerOrScanner.resetRuntimeSettings();
}
} catch (error){
console.log(error);
}
}
function useBuiltinSettingsIfEnabled(scannerOrReader){
if (document.getElementById("usebuiltin").checked){
var builtinMode=getSelectedRadio("builtinMode");
console.log(builtinMode);
scannerOrReader.updateRuntimeSettings(builtinMode);
}
}
async function unifyCoordinateType(scannerOrReader){
var rs = await scannerOrReader.getRuntimeSettings();
rs.resultCoordinateType=Dynamsoft.DBR.EnumResultCoordinateType.RCT_PERCENTAGE;
await scannerOrReader.updateRuntimeSettings(rs);
}
// decode video from camera
async function showVideo(){
try{
if (scanner!=null){
if (scanner.isOpen()==true){
alert("Please close the scanner first.");
return
}
}
updateScannerStyle();
var scannerElement = document.getElementById("scanner");
scanner = scanner || await Dynamsoft.DBR.BarcodeScanner.createInstance();
let rs = await scanner.getRuntimeSettings();
scanner.bSaveOriCanvas = true;
await scanner.updateRuntimeSettings(rs);
updateRuntimeSettingsFromTemplateIfExists(scanner);
useBuiltinSettingsIfEnabled(scanner);
//scanner.intervalTime = 5000;
scanner.bPlaySoundOnSuccessfulRead = true;
await unifyCoordinateType(scanner);
await switchCaptureBox(document.getElementById("capturebox").checked);
scanner.setUIElement(scannerElement);
scanner.onFrameRead = results => {
if(results.length){
console.log(results);
}
};
scanner.onUnduplicatedRead = (txt, result) => {
var results =[];
results.push(result);
try{
var extra_msg = document.getElementById("extra_msg");
var imgContainer =document.getElementById("imgContainer");
clearElements(imgContainer,"div");
var resultList =document.getElementById("resultList");
clearElements(resultList,"p");
extra_msg.innerText="";
showCapturedImg(result);
}catch (error){
extra_msg.innerText="OffScreenCanvas not supported on this browser";
console.log(error);
}
//alert(result.barcodeFormatString + ': ' + txt);
scanner.hide();
showResultList(results);
showResultTab(null)
};
await scanner.show();
}catch(ex){
alert(ex.message);
throw ex;
}
}
async function switchCaptureBox(checked){
console.log(checked);
if (scanner!=null){
let settings = await scanner.getRuntimeSettings();
/*
* 1 means true
* Using a percentage is easier
* The following code shrinks the decoding region by 25% on all sides
*/
settings.region.regionMeasuredByPercentage = 1;
if (checked==true){
settings.region.regionLeft = 25;
settings.region.regionTop = 30;
settings.region.regionRight = 75;
settings.region.regionBottom = 60;
} else{
settings.region.regionLeft = 0;
settings.region.regionTop = 0;
settings.region.regionRight = 100;
settings.region.regionBottom = 100;
}
await scanner.updateRuntimeSettings(settings);
}
}
// decode input picture
async function decodeImg(){
var localStatus = document.getElementById("localStatus");
var extra_msg = document.getElementById("extra_msg");
extra_msg.innerText="";
localStatus.innerText="Decoding...";
var resultList =document.getElementById("resultList");
clearElements(resultList,"p");
var startTime=new Date().getTime();
try{
let files=document.getElementById("ipt-file").files;
reader = reader || await Dynamsoft.DBR.BarcodeReader.createInstance();
updateRuntimeSettingsFromTemplateIfExists(reader);
useBuiltinSettingsIfEnabled(reader);
await unifyCoordinateType(reader);
for(let i = 0; i < files.length; ++i){
let file = files[i];
let results = await reader.decode(file);
for(let j = 0; j < results.length; j++){
showDetectedBarCode(i,results[j])
}
showResultList(results);
}
var endTime=new Date().getTime();
showResultTab(endTime-startTime);
}catch(ex){
alert(ex.message);
throw ex;
}
localStatus.innerText=""
}
function showResultTab(elapsedTime){
if (elapsedTime!=null){
document.getElementById("timeElapsed").innerText="Time: "+elapsedTime+"ms";
}else{
document.getElementById("timeElapsed").innerText="";
}
switchTab(null, 'result');
}
function onFileChosen(event){
showLocalImage(event);
}
function onFullScreen(){
updateScannerStyle();
}
function updateScannerStyle(){
var scannerElement = document.getElementById("scanner");
if (document.getElementById("fullscreen").checked){
if (scanner.isOpen()){
scannerElement.style.position="fixed";
}
}else{
scannerElement.style.position="relative";
}
}
function showLocalImage(event){
var imgContainer =document.getElementById("imgContainer");
clearElements(imgContainer,"div");
var files = event.target.files;
for(let i = 0; i < files.length; ++i){
var file = files[i];
thisType = file.type,
thisSize = file.size,
fileReader = new FileReader();
fileReader.onload = function(e){
appendImg(e.target.result);
};
fileReader.onerror = function () {
console.warn('oops, something went wrong.');
};
fileReader.readAsDataURL(file);
}
}
function appendImg(data,result){
var imgContainer =document.getElementById("imgContainer");
var oneImgResult = document.createElement("div");
oneImgResult.className="one-img-container"
img = document.createElement("img");
img.src = data;
oneImgResult.style = "width:100%;position:relative;"
img.style="width:100%;"
oneImgResult.append(img);
imgContainer.append(oneImgResult);
if (result!=null){
showDetectedBarCode(0,result)
}
}
function showDetectedBarCode(index,result){
var imgContainer =document.getElementById("imgContainer");
var oneImgResult = imgContainer.getElementsByClassName("one-img-container")[index];
var lr= result.localizationResult;
var leftPositions = new Array(lr.x1,lr.x2,lr.x3,lr.x4);
var topPositions = new Array(lr.y1,lr.y2,lr.y3,lr.y4);
var minX,minY,maxX,maxY;
minX=minOfArray(leftPositions);
minY=minOfArray(topPositions);
maxX=maxOfArray(leftPositions);
maxY=maxOfArray(topPositions);
var cvs = document.createElement("div")
cvs.style.left=minX+"%";
cvs.style.top=minY+"%";
cvs.style.width=(maxX-minX)+"%";
cvs.style.height=(maxY-minY)+"%";
cvs.style.position="absolute";
cvs.style.border="1px solid red";
oneImgResult.append(cvs);
}
function maxOfArray(numArray){
var maxNum=0;
for (i=0;i<numArray.length;i++){
maxNum=Math.max(numArray[i],maxNum);
}
return maxNum;
}
function minOfArray(numArray){
var minNum = numArray[0];
for (i=0;i<numArray.length;i++){
minNum=Math.min(numArray[i],minNum);
}
return minNum;
}
function clearElements(parent,tagName){
var elements=parent.getElementsByTagName(tagName);
while (elements.length>0){
var ele=elements[0];
ele.remove();
}
}
function showCapturedImg(result){
var canvas=scanner.oriCanvas
const ctx = canvas.getContext('webgl');
canvas[
canvas.convertToBlob
? 'convertToBlob' // specs
: 'toBlob' // current Firefox
]()
.then(blob => {
fileReader = new FileReader();
fileReader.onload = function(e){
appendImg(e.target.result,result);
};
fileReader.onerror = function () {
console.warn('oops, something went wrong.');
};
fileReader.readAsDataURL(blob);
});
}
function showResultList(results){
var resultList =document.getElementById("resultList");
var elements = resultList.getElementsByTagName("p");
var startIndex = elements.length;
for (i=0;i<results.length;i++){
var result=results[i];
var p = document.createElement("p");
p.innerText=(i+startIndex+1)+". "+result.barcodeFormatString + ': '+showEllipsisIfNeeded(result.barcodeText);
p.style="text-decoration: underline;color:#1EAEDB;overflow-wrap:break-word"
p.addEventListener("click", function(){copyData(result.barcodeText)}, false);
resultList.append(p);
}
}
function copyData(data){
navigator.clipboard.writeText(data)
.then(() => {
alert('Text copied to clipboard');
})
.catch(err => {
// This can happen if the user denies clipboard permissions:
console.error('Could not copy text: ', err);
});
}
function showEllipsisIfNeeded(text){
if (text.length>100){
return text.substring(0,100)+"...";
}
return text;
}
function getSelectedRadio(name){
var radios=document.getElementsByName(name)
for (i = 0; i < radios.length; i++) {
var r=radios[i];
if (r.checked==true){
return r.id;
}
}
}
function onTemplateChanged(){
var selectedTemplate = document.getElementById("templateSelect").value;
var ta = document.getElementById("templateTextarea");
if (selectedTemplate=="none"){
ta.value="";
}else{
download(selectedTemplate);
}
}
function download(name){
var ajaxObj = new XMLHttpRequest();
ajaxObj.open('GET', name);
ajaxObj.send();
ajaxObj.onreadystatechange = function () {
if (ajaxObj.readyState == 4 && ajaxObj.status == 200) {
var ta = document.getElementById("templateTextarea");
ta.value = ajaxObj.responseText;
alert("updated");
}
}
ajaxObj.onerror = function () {
console.log("error");
}
}
</script>
</body>
</html>