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834573: Library Bounds to Viewer bounds Sample #21

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Merged
merged 5 commits into from
Nov 14, 2024
Merged

834573: Library Bounds to Viewer bounds Sample #21

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834573: Library Bounds to Viewer bounds Sample
SF4524LogeshKumar Oct 29, 2024
e77b06e
834573: comments update.
SF4524LogeshKumar Oct 30, 2024
a3137fd
834573: optimized code
SF4524LogeshKumar Nov 7, 2024
0b94df0
834573: updated argument for getPageInfo
SF4524LogeshKumar Nov 7, 2024
216b671
834573: cleaned code
SF4524LogeshKumar Nov 7, 2024
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38 changes: 38 additions & 0 deletions How to/Library Bounds to Viewer bounds/index.html
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<!DOCTYPE html><html lang="en"><head>
<title>EJ2 PDF Viewer</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="Typescript PDF Viewer Control">
<meta name="author" content="Syncfusion">
<!-- <link href="index.css" rel="stylesheet"> -->
<link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-base/styles/material.css" rel="stylesheet">
<link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-pdfviewer/styles/material.css" rel="stylesheet">
<link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-buttons/styles/material.css" rel="stylesheet">
<link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-popups/styles/material.css" rel="stylesheet">
<link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-navigations/styles/material.css" rel="stylesheet">
<link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-dropdowns/styles/material.css" rel="stylesheet">
<link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-lists/styles/material.css" rel="stylesheet">
<link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-inputs/styles/material.css" rel="stylesheet">
<link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-splitbuttons/styles/material.css" rel="stylesheet">
<link href="https://cdn.syncfusion.com/ej2/27.1.48/ej2-notifications/styles/material.css" rel="stylesheet">

<!-- Essential JS 2 PDF Viewer's script -->
<script src="https://cdn.syncfusion.com/ej2/27.1.48/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>

<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>
<body>
<div id="container">
<div id="PdfViewer" style="height:500px;width:100%;"></div>
</div>


<script>
var ele = document.getElementById('container');
if(ele) {
ele.style.visibility = "visible";
}
</script>
<script src="index.js" type="text/javascript"></script>
</body></html>
92 changes: 92 additions & 0 deletions How to/Library Bounds to Viewer bounds/index.js
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var pdfviewer = new ej.pdfviewer.PdfViewer({
documentPath: 'https://cdn.syncfusion.com/content/pdf/pdf-succinctly.pdf',
serviceUrl: 'https://services.syncfusion.com/js/production/api/pdfviewer'
});
ej.pdfviewer.PdfViewer.Inject(ej.pdfviewer.TextSelection, ej.pdfviewer.TextSearch, ej.pdfviewer.Print, ej.pdfviewer.Navigation, ej.pdfviewer.Toolbar,
ej.pdfviewer.Magnification, ej.pdfviewer.Annotation, ej.pdfviewer.FormDesigner, ej.pdfviewer.FormFields, ej.pdfviewer.PageOrganizer);
pdfviewer.appendTo('#PdfViewer');
var pageSizes = [];
pdfviewer.ajaxRequestSuccess = function (args) {
if (args.action === 'Load') {
let objLength = Object.keys(args.data.pageSizes).length;
for (var x = 0; x < objLength; x++) {
var pageSize = args.data.pageSizes[x];
pageSizes.push(pageSize);
}
}
};


pdfviewer.exportSuccess = function (args) {
console.log(args.exportData);
const blobURL = args.exportData;

// Converting the exported blob into object
convertBlobURLToObject(blobURL)
.then((objectData) => {
console.log(objectData);
var datas = objectData;
var shapeAnnotationData = datas['pdfAnnotation'][0]['shapeAnnotation'];
shapeAnnotationData.map(data => {
if (data && data.rect && parseInt(data.rect.width)) {

//var pageHeight=parseInt(data.rect.height);
var pageHeight = pageSizes[parseInt(data.page)].Height

// Converting PDF Library values into PDF Viewer values.
var rect = {
x: (parseInt(data.rect.x) * 96) / 72,

// Converting pageHeight from pixels(PDF Viewer) to points(PDF Library) for accurate positioning
// The conversion factor of 72/96 is used to change pixel values to points
y: (parseInt(pageHeight) * 72 / 96 - parseInt(data.rect.height)) * 96 / 72,

width: (parseInt(data.rect.width) - parseInt(data.rect.x)) * 96 / 72,
height: (parseInt(data.rect.height) - parseInt(data.rect.y)) * 96 / 72,
};
}
if ((data.type == 'Line' || data.type == 'Arrow') && data.start && data.end) {
// Split and parse the start and end points
const [startX, startY] = data.start.split(',').map(Number);
const [endX, endY] = data.end.split(',').map(Number);

// Convert to PDF Viewer coordinates
const pageHeight = pageSizes[parseInt(data.page)].Height;
const pdfStartX = (startX * 96) / 72;
const pdfStartY = (parseInt(pageHeight) * 72 / 96 - startY) * 96 / 72;
const pdfEndX = (endX * 96) / 72;
const pdfEndY = (parseInt(pageHeight) * 72 / 96 - endY) * 96 / 72;

rect = {
x: Math.min(pdfStartX, pdfEndX),
y: Math.min(pdfStartY, pdfEndY),
width: Math.abs(pdfEndX - pdfStartX),
height: Math.abs(pdfEndY - pdfStartY),
};
}
if (rect != null && data.type!='Text') {
console.log(data.name);
console.log(rect);
console.log("-------------------------");
}
});
})
.catch((error) => {
console.error('Error converting Blob URL to object:', error);
});
};

function convertBlobURLToObject(blobURL) {
return fetch(blobURL)
.then((response) => response.blob())
.then((blobData) => {
return new Promise((resolve, reject) => {
const reader = new FileReader();
reader.onloadend = () => {
resolve(JSON.parse(reader.result));
};
reader.onerror = reject;
reader.readAsText(blobData);
});
});
}
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