ByteScout Premium Suite – JavaScript – Rotate image in pdf with pdf generator sdk for javascript

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ByteScout Premium Suite – JavaScript – Rotate image in pdf with pdf generator sdk for javascript

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ByteScout-Premium-Suite-JavaScript-Rotate-image-in-pdf-with-pdf-generator-sdk-for-javascript.pdf

How to rotate image in pdf with pdf generator sdk for javascript in JavaScript and ByteScout Premium Suite

This code in JavaScript shows how to rotate image in pdf with pdf generator sdk for javascript with this how to tutorial

On this page you will learn from code samples for programming in JavaScript.Writing of the code to rotate image in pdf with pdf generator sdk for javascript in JavaScript can be executed by programmers of any level using ByteScout Premium Suite. ByteScout Premium Suite is the set that includes 12 SDK products from ByteScout including tools and components for PDF, barcodes, spreadsheets, screen video recording and you can use it to rotate image in pdf with pdf generator sdk for javascript with JavaScript.

These JavaScript code samples for JavaScript guide developers to speed up coding of the application when using ByteScout Premium Suite. IF you want to implement the functionality, just copy and paste this code for JavaScript below into your code editor with your app, compile and run your application. Want to see how it works with your data then code testing will allow the function to be tested and work properly.

You can download free trial version of ByteScout Premium Suite from our website with this and other source code samples for JavaScript.

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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");

    pdf.pageAdd();

// we can use images only if we are on IE9 or higher (or non-IE browser)
 if (!IsInternetExplorer8OrLower)
 {
    // load image from local file
    pdf.imageLoadFromUrl('image1.jpg');
    // place this mage at given X, Y coordinates on the page and rotate -30 degree
    pdf.imagePlace(200, 40, -30);

    // load image from local file
    pdf.imageLoadFromUrl('image2.jpg');
    // placeimage at given X, Y coordinate and rotate 30 degree
    pdf.imagePlace(200, 420, 30);
}

    // return BytescoutPDF object instance
    return pdf;
}