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Tweak additional files to integrate decryption and clean up js

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This commit is contained in:
Reece Browne
2024-12-10 22:21:00 +00:00
parent ef8231de3a
commit 64dfa4b841
11 changed files with 501 additions and 477 deletions
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136
src/main/resources/templates/convert/pdf-to-csv.html
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@@ -34,140 +34,8 @@
<canvas id="overlayCanvas" style="position: absolute; top: 0; left: 0; z-index: 2; width: 100%"></canvas>
</div>
<script type="module" th:src="@{'/pdfjs-legacy/pdf.mjs'}"></script>
<script>
let pdfCanvas = document.getElementById('cropPdfCanvas');
let overlayCanvas = document.getElementById('overlayCanvas');
let canvasesContainer = document.getElementById('canvasesContainer');
canvasesContainer.style.display = "none";
// let paginationBtnContainer = ;
let context = pdfCanvas.getContext('2d');
let overlayContext = overlayCanvas.getContext('2d');
let btn1Object = document.getElementById('previous-page-btn');
let btn2Object = document.getElementById('next-page-btn');
overlayCanvas.width = pdfCanvas.width;
overlayCanvas.height = pdfCanvas.height;
let fileInput = document.getElementById('fileInput-input');
let file;
let pdfDoc = null;
let pageId = document.getElementById('pageId');
let currentPage = 1;
let totalPages = 0;
let startX = 0;
let startY = 0;
let rectWidth = 0;
let rectHeight = 0;
let timeId = null; // timeout id for resizing canvases event
btn1Object.addEventListener('click',function (e){
if (currentPage !== 1) {
currentPage = currentPage - 1;
pageId.value = currentPage;
if (file.type === 'application/pdf') {
let reader = new FileReader();
reader.onload = function (ev) {
let typedArray = new Uint8Array(reader.result);
pdfjsLib.GlobalWorkerOptions.workerSrc = './pdfjs-legacy/pdf.worker.mjs'
pdfjsLib.getDocument(typedArray).promise.then(function (pdf) {
pdfDoc = pdf;
totalPages = pdf.numPages;
renderPage(currentPage);
});
};
reader.readAsArrayBuffer(file);
}
}
});
btn2Object.addEventListener('click',function (e){
if (currentPage !== totalPages){
currentPage=currentPage+1;
pageId.value = currentPage;
if (file.type === 'application/pdf') {
let reader = new FileReader();
reader.onload = function(ev) {
let typedArray = new Uint8Array(reader.result);
pdfjsLib.GlobalWorkerOptions.workerSrc = './pdfjs-legacy/pdf.worker.mjs'
pdfjsLib.getDocument(typedArray).promise.then(function(pdf) {
pdfDoc = pdf;
totalPages = pdf.numPages;
renderPage(currentPage);
});
};
reader.readAsArrayBuffer(file);
}
}
});
function renderPageFromFile(file) {
if (file.type === 'application/pdf') {
let reader = new FileReader();
reader.onload = function (ev) {
let typedArray = new Uint8Array(reader.result);
pdfjsLib.GlobalWorkerOptions.workerSrc = './pdfjs-legacy/pdf.worker.mjs';
pdfjsLib.getDocument(typedArray).promise.then(function (pdf) {
pdfDoc = pdf;
totalPages = pdf.numPages;
renderPage(currentPage);
});
pageId.value = currentPage;
};
reader.readAsArrayBuffer(file);
document.getElementById("pagination-button-container").style.display = "flex";
document.getElementById("instruction-text").style.display = "block";
}
}
window.addEventListener("resize", function() {
clearTimeout(timeId);
timeId = setTimeout(function () {
if (fileInput.files.length == 0) return;
let canvasesContainer = document.getElementById('canvasesContainer');
let containerRect = canvasesContainer.getBoundingClientRect();
context.clearRect(0, 0, pdfCanvas.width, pdfCanvas.height);
overlayContext.clearRect(0, 0, overlayCanvas.width, overlayCanvas.height);
pdfCanvas.width = containerRect.width;
pdfCanvas.height = containerRect.height;
overlayCanvas.width = containerRect.width;
overlayCanvas.height = containerRect.height;
let file = fileInput.files[0];
renderPageFromFile(file);
}, 1000);
});
fileInput.addEventListener('change', function(e) {
canvasesContainer.style.display = "block"; // set for visual purposes
file = e.target.files[0];
renderPageFromFile(file);
});
function renderPage(pageNumber) {
pdfDoc.getPage(pageNumber).then(function(page) {
let viewport = page.getViewport({ scale: 1.0 });
pdfCanvas.width = viewport.width;
pdfCanvas.height = viewport.height;
overlayCanvas.width = viewport.width; // Match overlay canvas size with PDF canvas
overlayCanvas.height = viewport.height;
let renderContext = { canvasContext: context, viewport: viewport };
page.render(renderContext);
pdfCanvas.classList.add("shadow-canvas");
});
}
<script th:src="@{'/js/thirdParty/pdf-lib.min.js'}"></script>
<script type="module" th:src="@{'/js/pages/pdf-to-csv.js'}">
</script>
</div>
</div>