mirror of
https://github.com/Stirling-Tools/Stirling-PDF.git
synced 2025-06-21 06:55:04 +00:00
7f566d5de8
* WIP: fixes canvas and rect to crop - small problem in smaller screens - neew to fix re render page on resize * Closes #2209
198 lines
8.5 KiB
HTML
198 lines
8.5 KiB
HTML
<!DOCTYPE html>
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<html th:lang="${#locale.language}" th:dir="#{language.direction}" th:data-language="${#locale.toString()}" xmlns:th="https://www.thymeleaf.org">
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<head>
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<th:block th:insert="~{fragments/common :: head(title=#{crop.title}, header=#{crop.header})}"></th:block>
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</head>
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<body>
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<div id="page-container">
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<div id="content-wrap">
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<th:block th:insert="~{fragments/navbar.html :: navbar}"></th:block>
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<br><br>
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<div class="container">
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<div class="row justify-content-center">
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<div class="col-md-6 bg-card">
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<div class="tool-header">
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<span class="material-symbols-rounded tool-header-icon organize">crop</span>
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<span class="tool-header-text" th:text="#{crop.header}"></span>
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</div>
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<form id="cropForm" th:action="@{'/api/v1/general/crop'}" method="post" enctype="multipart/form-data">
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<div th:replace="~{fragments/common :: fileSelector(name='fileInput', multipleInputsForSingleRequest=false, accept='application/pdf')}"></div>
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<input id="x" type="hidden" name="x">
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<input id="y" type="hidden" name="y">
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<input id="width" type="hidden" name="width">
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<input id="height" type="hidden" name="height">
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<button type="submit" class="btn btn-primary" th:text="#{crop.submit}"></button>
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</form>
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<div id="canvasesContainer" style="position: relative; margin: 20px 0; width: auto;">
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<canvas id="cropPdfCanvas" style="width: 100%"></canvas>
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<canvas id="overlayCanvas" style="position: absolute; top: 0; left: 0; z-index: 2; width: 100%"></canvas>
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</div>
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</div>
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</div>
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<script type="module" th:src="@{'/pdfjs-legacy/pdf.mjs'}"></script>
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<script>
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let pdfCanvas = document.getElementById('cropPdfCanvas');
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let overlayCanvas = document.getElementById('overlayCanvas');
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let canvasesContainer = document.getElementById('canvasesContainer');
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canvasesContainer.style.display = "none";
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let containerRect = canvasesContainer.getBoundingClientRect();
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let context = pdfCanvas.getContext('2d');
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let overlayContext = overlayCanvas.getContext('2d');
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overlayCanvas.width = pdfCanvas.width;
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overlayCanvas.height = pdfCanvas.height;
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let isDrawing = false; // New flag to check if drawing is ongoing
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let cropForm = document.getElementById('cropForm');
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let fileInput = document.getElementById('fileInput-input');
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let xInput = document.getElementById('x');
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let yInput = document.getElementById('y');
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let widthInput = document.getElementById('width');
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let heightInput = document.getElementById('height');
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let pdfDoc = null;
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let currentPage = 1;
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let totalPages = 0;
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let startX = 0;
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let startY = 0;
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let rectWidth = 0;
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let rectHeight = 0;
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let pageScale = 1; // The scale which the pdf page renders
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let timeId = null; // timeout id for resizing canvases event
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function renderPageFromFile(file) {
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if (file.type === 'application/pdf') {
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let reader = new FileReader();
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reader.onload = function(ev) {
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let typedArray = new Uint8Array(reader.result);
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pdfjsLib.GlobalWorkerOptions.workerSrc = './pdfjs-legacy/pdf.worker.mjs'
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pdfjsLib.getDocument(typedArray).promise.then(function(pdf) {
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pdfDoc = pdf;
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totalPages = pdf.numPages;
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renderPage(currentPage);
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});
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};
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reader.readAsArrayBuffer(file);
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}
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}
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window.addEventListener("resize", function() {
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clearTimeout(timeId);
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timeId = setTimeout(function () {
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if (fileInput.files.length == 0) return;
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let canvasesContainer = document.getElementById('canvasesContainer');
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let containerRect = canvasesContainer.getBoundingClientRect();
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context.clearRect(0, 0, pdfCanvas.width, pdfCanvas.height);
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overlayContext.clearRect(0, 0, overlayCanvas.width, overlayCanvas.height);
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pdfCanvas.width = containerRect.width;
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pdfCanvas.height = containerRect.height;
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overlayCanvas.width = containerRect.width;
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overlayCanvas.height = containerRect.height;
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let file = fileInput.files[0];
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renderPageFromFile(file);
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}, 1000);
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});
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fileInput.addEventListener('change', function(e) {
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canvasesContainer.style.display = "block"; // set for visual purposes
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let file = e.target.files[0];
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renderPageFromFile(file);
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});
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cropForm.addEventListener('submit', function(e) {
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if (xInput.value == "" && yInput.value == "" && widthInput.value == "" && heightInput.value == "") {
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// Ορίστε συντεταγμένες για ολόκληρη την επιφάνεια του PDF
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xInput.value = 0;
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yInput.value = 0;
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widthInput.value = containerRect.width;
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heightInput.value = containerRect.height;
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}
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});
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overlayCanvas.addEventListener('mousedown', function(e) {
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// Clear previously drawn rectangle on the main canvas
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context.clearRect(0, 0, pdfCanvas.width, pdfCanvas.height);
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renderPage(currentPage); // Re-render the PDF
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// Clear the overlay canvas to ensure old drawings are removed
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overlayContext.clearRect(0, 0, overlayCanvas.width, overlayCanvas.height);
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startX = e.offsetX;
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startY = e.offsetY;
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isDrawing = true;
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});
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overlayCanvas.addEventListener('mousemove', function(e) {
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if (!isDrawing) return;
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overlayContext.clearRect(0, 0, overlayCanvas.width, overlayCanvas.height); // Clear previous rectangle
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rectWidth = e.offsetX - startX;
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rectHeight = e.offsetY - startY;
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overlayContext.strokeStyle = 'red';
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overlayContext.strokeRect(startX, startY, rectWidth, rectHeight);
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});
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overlayCanvas.addEventListener('mouseup', function(e) {
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isDrawing = false;
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rectWidth = e.offsetX - startX;
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rectHeight = e.offsetY - startY;
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let flippedY = pdfCanvas.height - e.offsetY;
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xInput.value = startX / pageScale;
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yInput.value = flippedY / pageScale;
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widthInput.value = rectWidth / pageScale;
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heightInput.value = rectHeight /pageScale;
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// Draw the final rectangle on the main canvas
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context.strokeStyle = 'red';
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context.strokeRect(startX, startY, rectWidth, rectHeight);
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overlayContext.clearRect(0, 0, overlayCanvas.width, overlayCanvas.height); // Clear the overlay
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});
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function renderPage(pageNumber) {
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pdfDoc.getPage(pageNumber).then(function(page) {
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let canvasesContainer = document.getElementById('canvasesContainer');
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let containerRect = canvasesContainer.getBoundingClientRect();
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pageScale = containerRect.width / page.getViewport({ scale: 1 }).width; // The new scale
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let viewport = page.getViewport({ scale: containerRect.width / page.getViewport({ scale: 1 }).width });
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canvasesContainer.width =viewport.width;
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canvasesContainer.height = viewport.height;
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pdfCanvas.width = viewport.width;
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pdfCanvas.height = viewport.height;
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overlayCanvas.width = viewport.width; // Match overlay canvas size with PDF canvas
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overlayCanvas.height = viewport.height;
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let renderContext = { canvasContext: context, viewport: viewport };
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page.render(renderContext);
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pdfCanvas.classList.add("shadow-canvas");
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});
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}
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</script>
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</div>
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</div>
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<th:block th:insert="~{fragments/footer.html :: footer}"></th:block>
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</div>
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</body>
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</html>
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