add basic pdf to image conv function
This commit is contained in:
raphael
parent
ede9a98e04
commit
15135540fe
|
|
@ -4,8 +4,10 @@ import whiteboard from "./whiteboard";
|
|||
import keybinds from "./keybinds";
|
||||
import Picker from "vanilla-picker";
|
||||
import { dom } from "@fortawesome/fontawesome-svg-core";
|
||||
import pdfjsLib from "pdfjs-dist/build/pdf";
|
||||
import pdfjsLibWorker from "pdfjs-dist/build/pdf.worker";
|
||||
|
||||
function main(){
|
||||
function main() {
|
||||
|
||||
var whiteboardId = getQueryVariable("whiteboardid");
|
||||
var randomid = getQueryVariable("randomid");
|
||||
|
|
@ -475,6 +477,65 @@ function main(){
|
|||
const base64data = reader.result;
|
||||
uploadImgAndAddToWhiteboard(base64data);
|
||||
}
|
||||
} else if (isPDFFileName(filename)) {
|
||||
var blob = e.originalEvent.dataTransfer.files[0];
|
||||
pdfjsLib.GlobalWorkerOptions.workerSrc = pdfjsLibWorker;
|
||||
|
||||
var reader = new window.FileReader();
|
||||
reader.onloadend = function () {
|
||||
var pdfData = new Uint8Array(this.result);
|
||||
var loadingTask = pdfjsLib.getDocument({ data: pdfData });
|
||||
loadingTask.promise.then(function (pdf) {
|
||||
console.log('PDF loaded');
|
||||
|
||||
// Fetch the first page
|
||||
var pageNumber = 1;
|
||||
pdf.getPage(pageNumber).then(function (page) {
|
||||
console.log('Page loaded');
|
||||
|
||||
|
||||
var scale = 1.5;
|
||||
var viewport = page.getViewport({ scale: scale });
|
||||
|
||||
// Prepare canvas using PDF page dimensions
|
||||
var canvas = $("<canvas></canvas>")[0];
|
||||
var context = canvas.getContext('2d');
|
||||
canvas.height = viewport.height;
|
||||
canvas.width = viewport.width;
|
||||
|
||||
// Render PDF page into canvas context
|
||||
var renderContext = {
|
||||
canvasContext: context,
|
||||
viewport: viewport
|
||||
};
|
||||
var renderTask = page.render(renderContext);
|
||||
renderTask.promise.then(function () {
|
||||
|
||||
var dataUrl = canvas.toDataURL("image/jpeg", 1.0);
|
||||
console.log('Page rendered');
|
||||
|
||||
var modalDiv = $('<div>' +
|
||||
'<img style="width:100%;" src="' + dataUrl + '"/>' +
|
||||
'<br><button>Upload to Whiteboard</button>' +
|
||||
'</div>')
|
||||
modalDiv.find("button").click(function () {
|
||||
$(".basicalert").remove();
|
||||
uploadImgAndAddToWhiteboard(dataUrl);
|
||||
})
|
||||
showBasicAlert(modalDiv, {
|
||||
header: "Pdf to Image",
|
||||
okBtnText: "cancel",
|
||||
headercolor: "#0082c9"
|
||||
})
|
||||
});
|
||||
});
|
||||
}, function (reason) {
|
||||
// PDF loading error
|
||||
showBasicAlert("Error loading pdf as image! Check that this is a vaild pdf file!");
|
||||
console.error(reason);
|
||||
});
|
||||
}
|
||||
reader.readAsArrayBuffer(blob);
|
||||
} else {
|
||||
showBasicAlert("File must be an image!");
|
||||
}
|
||||
|
|
@ -516,7 +577,7 @@ function main(){
|
|||
new Picker({
|
||||
parent: $('#whiteboardColorpicker')[0],
|
||||
color: "#000000",
|
||||
onChange: function(color) {
|
||||
onChange: function (color) {
|
||||
whiteboard.setDrawColor(color.rgbaString);
|
||||
}
|
||||
});
|
||||
|
|
@ -591,6 +652,13 @@ function main(){
|
|||
return known_extensions.includes(extension.toLowerCase());
|
||||
}
|
||||
|
||||
// verify if filename refers to an pdf
|
||||
function isPDFFileName(filename) {
|
||||
var extension = filename.split(".")[filename.split(".").length - 1];
|
||||
var known_extensions = ["pdf"];
|
||||
return known_extensions.includes(extension.toLowerCase());
|
||||
}
|
||||
|
||||
// verify if given url is url to an image
|
||||
function isValidImageUrl(url, callback) {
|
||||
var img = new Image();
|
||||
|
|
@ -647,7 +715,8 @@ function main(){
|
|||
header: "INFO MESSAGE",
|
||||
okBtnText: "Ok",
|
||||
headercolor: "#d25d5d",
|
||||
hideAfter: false
|
||||
hideAfter: false,
|
||||
onOkClick: false
|
||||
}
|
||||
if (newOptions) {
|
||||
for (var i in newOptions) {
|
||||
|
|
@ -656,7 +725,8 @@ function main(){
|
|||
}
|
||||
var alertHtml = $('<div class="basicalert" style="position:absolute; left:0px; width:100%; top:70px; font-family: monospace;">' +
|
||||
'<div style="width: 30%; margin: auto; background: #aaaaaa; border-radius: 5px; font-size: 1.2em; border: 1px solid gray;">' +
|
||||
'<div style="border-bottom: 1px solid #676767; background: ' + options["headercolor"] + '; padding-left: 5px; font-size: 0.8em;">' + options["header"] + '</div>' +
|
||||
'<div style="border-bottom: 1px solid #676767; background: ' + options["headercolor"] + '; padding-left: 5px; font-size: 0.8em;">' + options["header"] +
|
||||
'<div style="float: right; margin-right: 4px; color: #373737; cursor: pointer;" class="closeAlert">x</div></div>' +
|
||||
'<div style="padding: 10px;" class="htmlcontent"></div>' +
|
||||
'<div style="height: 20px; padding: 10px;"><button class="modalBtn okbtn" style="float: right;">' + options["okBtnText"] + '</button></div>' +
|
||||
'</div>' +
|
||||
|
|
@ -664,8 +734,15 @@ function main(){
|
|||
alertHtml.find(".htmlcontent").append(html);
|
||||
$("body").append(alertHtml);
|
||||
alertHtml.find(".okbtn").click(function () {
|
||||
if (options.onOkClick) {
|
||||
options.onOkClick();
|
||||
}
|
||||
alertHtml.remove();
|
||||
})
|
||||
alertHtml.find(".closeAlert").click(function () {
|
||||
alertHtml.remove();
|
||||
})
|
||||
|
||||
if (options.hideAfter) {
|
||||
setTimeout(function () {
|
||||
alertHtml.find(".okbtn").click();
|
||||
|
|
@ -685,7 +762,6 @@ function main(){
|
|||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
export default main;
|
||||
Loading…
Reference in New Issue