Render PDF Pages as SVG in canvas












0















I was trying to render PDF using pdfjs. I did this fine but now I want PDF pages must be clear while zoom as well. Please review & let me knoe How I can import PDF pages as SVG to maintain clarity. Any other alternative to maintain clarity of pages would be highly appreciated



My Code



     __PDF_DOC.getPage(page_no).then(function (page) {

        pdfPage = page;

        var canvas1 = document.getElementById('c');



        var scale_required = 1;//__CANVAS.width / page.getViewport(1).width;



        // Get viewport of the page at required scale

        var viewport = page.getViewport(canvas.width / page.getViewport(1.0).width);





        renderContext = {

            canvasContext: canvas.getContext(),//__CANVAS_CTX,

            viewport: viewport,//viewport,



        };



        // Render the page contents in the canvas

        page.render(renderContext).then(function () {



            var bg = canvas1.toDataURL("image/svg",1);



            canvas.setBackgroundImage(bg, canvas.renderAll.bind(canvas));

 canvas.renderAll();

});





canvas html5-canvas fabricjs pdfjs







share|improve this question























  • If you are zooming you will need to re-render the content each time you zoom and set the viewport to the location you are zooming at.

    – Blindman67
    Nov 24 '18 at 3:31
















0















I was trying to render PDF using pdfjs. I did this fine but now I want PDF pages must be clear while zoom as well. Please review & let me knoe How I can import PDF pages as SVG to maintain clarity. Any other alternative to maintain clarity of pages would be highly appreciated



My Code



     __PDF_DOC.getPage(page_no).then(function (page) {

        pdfPage = page;

        var canvas1 = document.getElementById('c');



        var scale_required = 1;//__CANVAS.width / page.getViewport(1).width;



        // Get viewport of the page at required scale

        var viewport = page.getViewport(canvas.width / page.getViewport(1.0).width);





        renderContext = {

            canvasContext: canvas.getContext(),//__CANVAS_CTX,

            viewport: viewport,//viewport,



        };



        // Render the page contents in the canvas

        page.render(renderContext).then(function () {



            var bg = canvas1.toDataURL("image/svg",1);



            canvas.setBackgroundImage(bg, canvas.renderAll.bind(canvas));

 canvas.renderAll();

});





canvas html5-canvas fabricjs pdfjs







share|improve this question























  • If you are zooming you will need to re-render the content each time you zoom and set the viewport to the location you are zooming at.

    – Blindman67
    Nov 24 '18 at 3:31














0












0








0








I was trying to render PDF using pdfjs. I did this fine but now I want PDF pages must be clear while zoom as well. Please review & let me knoe How I can import PDF pages as SVG to maintain clarity. Any other alternative to maintain clarity of pages would be highly appreciated



My Code



     __PDF_DOC.getPage(page_no).then(function (page) {

        pdfPage = page;

        var canvas1 = document.getElementById('c');



        var scale_required = 1;//__CANVAS.width / page.getViewport(1).width;



        // Get viewport of the page at required scale

        var viewport = page.getViewport(canvas.width / page.getViewport(1.0).width);





        renderContext = {

            canvasContext: canvas.getContext(),//__CANVAS_CTX,

            viewport: viewport,//viewport,



        };



        // Render the page contents in the canvas

        page.render(renderContext).then(function () {



            var bg = canvas1.toDataURL("image/svg",1);



            canvas.setBackgroundImage(bg, canvas.renderAll.bind(canvas));

 canvas.renderAll();

});





canvas html5-canvas fabricjs pdfjs







share|improve this question














I was trying to render PDF using pdfjs. I did this fine but now I want PDF pages must be clear while zoom as well. Please review & let me knoe How I can import PDF pages as SVG to maintain clarity. Any other alternative to maintain clarity of pages would be highly appreciated



My Code



     __PDF_DOC.getPage(page_no).then(function (page) {

        pdfPage = page;

        var canvas1 = document.getElementById('c');



        var scale_required = 1;//__CANVAS.width / page.getViewport(1).width;



        // Get viewport of the page at required scale

        var viewport = page.getViewport(canvas.width / page.getViewport(1.0).width);





        renderContext = {

            canvasContext: canvas.getContext(),//__CANVAS_CTX,

            viewport: viewport,//viewport,



        };



        // Render the page contents in the canvas

        page.render(renderContext).then(function () {



            var bg = canvas1.toDataURL("image/svg",1);



            canvas.setBackgroundImage(bg, canvas.renderAll.bind(canvas));

 canvas.renderAll();

});





canvas html5-canvas fabricjs pdfjs




canvas html5-canvas fabricjs pdfjs






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 23 '18 at 9:18









Harjeet SinghHarjeet Singh

2102420




2102420













  • If you are zooming you will need to re-render the content each time you zoom and set the viewport to the location you are zooming at.

    – Blindman67
    Nov 24 '18 at 3:31



















  • If you are zooming you will need to re-render the content each time you zoom and set the viewport to the location you are zooming at.

    – Blindman67
    Nov 24 '18 at 3:31

















If you are zooming you will need to re-render the content each time you zoom and set the viewport to the location you are zooming at.

– Blindman67
Nov 24 '18 at 3:31





If you are zooming you will need to re-render the content each time you zoom and set the viewport to the location you are zooming at.

– Blindman67
Nov 24 '18 at 3:31












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