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
asked Nov 23 '18 at 9:18
Harjeet SinghHarjeet Singh
2102420
add a comment |
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
asked Nov 23 '18 at 9:18
Harjeet SinghHarjeet Singh
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
add a comment |
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
asked Nov 23 '18 at 9:18
Harjeet SinghHarjeet Singh
2102420
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
asked Nov 23 '18 at 9:18
Harjeet SinghHarjeet Singh
2102420
asked Nov 23 '18 at 9:18
Harjeet SinghHarjeet Singh
2102420
asked Nov 23 '18 at 9:18
Harjeet SinghHarjeet Singh
2102420
asked Nov 23 '18 at 9:18
Harjeet SinghHarjeet Singh
2102420
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
add a comment |
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
add a comment |
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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