ByteScout Premium Suite - JavaScript - Add image to pdf from canvas with pdf generator sdk for javascript - ByteScout

ByteScout Premium Suite – JavaScript – Add image to pdf from canvas with pdf generator sdk for javascript

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How to add image to pdf from canvas with pdf generator sdk for javascript in JavaScript using ByteScout Premium Suite

If you want to learn more then this tutorial will show how to add image to pdf from canvas with pdf generator sdk for javascript in JavaScript

This sample source code below will display you how to add image to pdf from canvas with pdf generator sdk for javascript in JavaScript. What is ByteScout Premium Suite? It is the set that includes 12 SDK products from ByteScout including tools and components for PDF, barcodes, spreadsheets, screen video recording. It can help you to add image to pdf from canvas with pdf generator sdk for javascript in your JavaScript application.

These JavaScript code samples for JavaScript guide developers to speed up coding of the application when using ByteScout Premium Suite. This JavaScript sample code is all you need for your app. Just copy and paste the code, add references (if needs to) and you are all set! Applying JavaScript application mostly includes various stages of the software development so even if the functionality works please test it with your data and the production environment.

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checkdatauri.js
      
// checks if we have datauri support in current browser // if we have support for datauri support then we can stream generated PDF right into the browser // otherwise we should use Downloadify script to allow user to save PDF file function CheckDataURISupport(){ var result = true; var checkDataURISupportImage = new Image(); checkDataURISupportImage.onload = checkDataURISupportImage.onerror = function(){ if(this.width != 1 || this.height != 1){ result = false; } } checkDataURISupportImage.src = "data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs="; // check if we have datauri support in current browser - end return result; }

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createpdf.js
      
// function that creates BytescoutPDF instance (defined in BytescoutPDF.js script which have to be included into the same page) // then calls API methods and properties to create PDF document // and returns created BytescoutPDF object instance // this CreatePDF() function is called from Sample.html // IsInternetExplorer8OrLower parameter indicates if we use IE8 or lower so we CAN'T use images (as it requires HTML5 Canvas available in IE9 or higher). Other browsers should be working fine // IMPORTANT ABOUT IMAGES: // When using Firefox or IE, pdf generation may fail because images are not accessible when pdf generation works // the solution for this issue is to preload images in main HTML document before running PDF generation // to preload images, put them into hidden div block "pdfreportimages" - you can see it in the sample.html right after <body> opening tag function CreatePDF(IsInternetExplorer8OrLower) { // create BytescoutPDF object instance var pdf = new BytescoutPDF(); // set document properties: Title, subject, keywords, author name and creator name pdf.propertiesSet("Sample document title", "Sample subject", "keyword1, keyword 2, keyword3", "Document Author Name", "Document Creator Name"); // set page size pdf.pageSetSize(BytescoutPDF.A4); // set page orientation (BytescoutPDF.PORTRAIT = portrait, BytescoutPDF.LANDSCAPE = landscape) pdf.pageSetOrientation(BytescoutPDF.PORTRAIT); // add new page pdf.pageAdd(); if (!IsInternetExplorer8OrLower) // images and drawings from canvas are supported on IE version 9 and higher, other modern browsers should work fine { // create temporary canvas (you can also simply get existing canvas) var canvas = document.createElement('canvas'); // set width and height canvas.width = 320; canvas.height = 240; // get context from canvas (to draw on) var context = canvas.getContext("2d"); // set white background color context.fillStyle = "#EEEEEE"; // and fill the background with white color context.fillRect(0, 0, 320, 240); // draw the yellow circle context.strokeStyle = "#000000"; context.fillStyle = "#FFFF00"; context.beginPath(); context.arc(100, 100, 50, 0, Math.PI * 2, true); context.closePath(); context.stroke(); context.fill(); // load image from canvas into BytescoutPDF pdf.imageLoadFromCanvas(canvas); // place this mage at given X, Y coordinates on the page pdf.imagePlace(20, 40); // place this mage at given coordinates and dimesionson on the page pdf.imagePlaceSetSize(20, 170, 0, 80, 60); } // return BytescoutPDF object instance return pdf; }

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60 Day Free Trial or Visit ByteScout Premium Suite Home Page

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