gilour

Back Back Up Advanced Editor

<!doctype html>
<html lang="en">

<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title></title>
    <style>
        html {
            background-color: #333333;
        }

#my_pdf_viewer {
            margin-bottom: 50px;
        }

#canvas_container {
            width: 100%;
            height: 100%;
            overflow: auto;
            background: #333;
            text-align: center;
        }

#navigation_controls {
            background-color: #4b9d8a;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            height: 50px;
            display: flex;
        }

#go_previous {
            width: 50%;
            max-width: 200px;
            height: 100%;
            background-color: #ffffff;
            border: none;
            cursor: pointer;
        }

#go_next {
            width: 50%;
            max-width: 200px;
            height: 100%;
            background-color: #ffffff;
            border: none;
            cursor: pointer;
        }

#current_page {
            height: 48px;
            width: 100%;
            border: none;
            background-color: #ffcd99;
            text-align: center;
            font-weight: 900;
            font-size: 18px;
        }

#zoom_controls {
            background-color: #0000;
            position: fixed;
            bottom: 55px;
            right: 0;
            left: 0;
            text-align: center;
        }
    </style>
    <script src="{{ asset('assets/global/pdf-canvas/pdf.min.js') }}"></script>
    <script src="{{ asset('assets/global/pdf-canvas/pdf.worker.min.js') }}"></script>

</head>

pdfjsLib.getDocument("{{ route('course.get_file') }}?course_id={{ $course_id }}&lesson_id={{ $lesson_id }}").then((pdf) => {

myState.pdf = pdf;
            render();

});

function render() {
            myState.pdf.getPage(myState.currentPage).then((page) => {

var canvas = document.getElementById("pdf_renderer");
                var ctx = canvas.getContext('2d');

var viewport = page.getViewport(myState.zoom);

canvas.width = viewport.width;
                canvas.height = viewport.height;

page.render({
                    canvasContext: ctx,
                    viewport: viewport
                });
            });
        }

document.getElementById('go_previous').addEventListener('click', (e) => {
            if (myState.pdf == null || myState.currentPage == 1)
                return;
            myState.currentPage -= 1;
            document.getElementById("current_page").value = myState.currentPage;
            render();
        });

document.getElementById('go_next').addEventListener('click', (e) => {
            if (myState.pdf == null || myState.currentPage > myState.pdf._pdfInfo.numPages)
                return;
            myState.currentPage += 1;
            document.getElementById("current_page").value = myState.currentPage;
            render();
        });

document.getElementById('current_page').addEventListener('keypress', (e) => {
            if (myState.pdf == null) return;

// Get key code
            var code = (e.keyCode ? e.keyCode : e.which);

// If key code matches that of the Enter key
            if (code == 13) {
                var desiredPage =
                    document.getElementById('current_page').valueAsNumber;

if (desiredPage >= 1 && desiredPage <= myState.pdf._pdfInfo.numPages) {
                    myState.currentPage = desiredPage;
                    document.getElementById("current_page").value = desiredPage;
                    render();
                }
            }
        });

document.getElementById('zoom_in').addEventListener('click', (e) => {
            if (myState.pdf == null) return;
            myState.zoom += 0.2;
            render();
        });

document.getElementById('zoom_out').addEventListener('click', (e) => {
            if (myState.pdf == null) return;
            myState.zoom -= 0.2;
            render();
        });

//Disable right button
        document.addEventListener('contextmenu', event => event.preventDefault());
    </script>
</body>

</html>