ByteScout PDF Suite – Javascript – Draw line in pdf with pdf generator sdk for javascript

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ByteScout PDF Suite – Javascript – Draw line in pdf with pdf generator sdk for javascript

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ByteScout-PDF-Suite-Javascript-Draw-line-in-pdf-with-pdf-generator-sdk-for-javascript.pdf

How to draw line in pdf with pdf generator sdk for javascript in Javascript and ByteScout PDF Suite

Continuous learning is a crucial part of computer science and this tutorial shows how to draw line in pdf with pdf generator sdk for javascript in Javascript

These source code samples are assembled by their programming language and functions they apply. What is ByteScout PDF Suite? It is the set that includes 6 SDK products to work with PDF from generating rich PDF reports to extracting data from PDF documents and converting them to HTML. This bundle includes PDF (Generator) SDK, PDF Renderer SDK, PDF Extractor SDK, PDF to HTML SDK, PDF Viewer SDK and PDF Generator SDK for Javascript. It can help you to draw line in pdf with pdf generator sdk for javascript in your Javascript application.

The following code snippet for ByteScout PDF Suite works best when you need to quickly draw line in pdf with pdf generator sdk for javascript in your Javascript application. 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! Use of ByteScout PDF Suite in Javascript is also described in the documentation included along with the product.

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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();

    // draw lines with different widths
    for (var j = 0; j < 10; j++) {
        // set color in RGB format (0,0,0 is black color)
        pdf.graphicsSetColor(0, 0, 0);

        // set line width
        pdf.graphicsSetLineWidth(1 + j);

        // draw a line from one point to another
        pdf.graphicsDrawLine(20, 20 + j * 15, 120, 20 + j * 15);
    }

    // draw lines with different colors (trying different Green components
    for (var j = 0; j < 25; j++) {
        // set new line color in RGB format by changing G component
        pdf.graphicsSetColor(25, 10 * j, 25);

        // set line width
        pdf.graphicsSetLineWidth(3);

        // draw a line from one point to another
        pdf.graphicsDrawLine(140, 20 + j * 8, 300, 20 + j * 8);
    }


    // draw lines with different line endings
    // available line endings:
    // BytescoutPDF.BUTT_CAP (default)
    // BytescoutPDF.ROUND_CAP
    // BytescoutPDF.PROJECTING_SQUARE_CAP

    // draw line with line end type = 0

    // set new line color in RGB format to Black (0,0,0)
    pdf.graphicsSetColor(0, 0, 0);

    // set line width
    pdf.graphicsSetLineWidth(10);
    // set line ending type
    pdf.graphicsSetLineEndType(BytescoutPDF.BUTT_CAP);

    // draw a line from one point to another
    pdf.graphicsDrawLine(320, 20, 380, 20);

    // set line width
    pdf.graphicsSetLineWidth(10);
    // set line ending type
    pdf.graphicsSetLineEndType(BytescoutPDF.ROUND_CAP);

    // draw a line from one point to another
    pdf.graphicsDrawLine(320, 40, 380, 40);

    // set line width
    pdf.graphicsSetLineWidth(10);
    // set line ending type
    pdf.graphicsSetLineEndType(BytescoutPDF.PROJECTING_SQUARE_CAP);

    // draw a line from one point to another
    pdf.graphicsDrawLine(320, 60, 380, 60);


    // return BytescoutPDF object instance
    return pdf;
}