refactor JS
Rather than having all the JS all in one big file, separate the code into modules.
This commit is contained in:
jordy
parent
6cce2ee70a
commit
e8a91d2631
6 changed files with 541 additions and 455 deletions
88
src/main/resources/static/js/multitool/dragDrop.js
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88
src/main/resources/static/js/multitool/dragDrop.js
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class DragDropManager {
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dragContainer;
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movePageTo;
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pageDragging;
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draggelEl;
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draggedImageEl;
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hoveredEl;
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constructor(id, movePageTo) {
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this.dragContainer = document.getElementById(id);
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this.movePageTo = movePageTo;
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this.pageDragging = false;
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this.hoveredEl = undefined;
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this.draggelEl = undefined
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this.draggedImageEl = undefined;
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this.startDraggingPage = this.startDraggingPage.bind(this);
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this.onDragEl = this.onDragEl.bind(this);
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this.stopDraggingPage = this.stopDraggingPage.bind(this);
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this.attachDragDropCallbacks = this.attachDragDropCallbacks.bind(this);
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}
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startDraggingPage(div, imageSrc) {
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this.pageDragging = true;
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this.draggedEl = div;
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div.classList.add('dragging');
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const imgEl = document.createElement('img');
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imgEl.classList.add('dragged-img');
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imgEl.src = imageSrc;
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this.draggedImageEl = imgEl;
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this.draggedImageEl.style.left = screenX;
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this.draggedImageEl.style.right = screenY;
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this.dragContainer.appendChild(imgEl);
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window.addEventListener('mouseup', (e) => {
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this.stopDraggingPage();
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})
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window.addEventListener('mousemove', this.onDragEl)
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}
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onDragEl(mouseEvent) {
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const { clientX, clientY } = mouseEvent;
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if(this.draggedImageEl) {
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this.draggedImageEl.style.left = `${clientX}px`;
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this.draggedImageEl.style.top = `${clientY}px`;
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}
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}
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stopDraggingPage() {
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window.removeEventListener('mousemove', this.onDragEl);
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this.draggedImageEl = undefined;
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this.pageDragging = false;
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this.draggedEl.classList.remove('dragging');
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this.hoveredEl.classList.remove('draghover');
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this.dragContainer.childNodes.forEach((dragChild) => {
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this.dragContainer.removeChild(dragChild);
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})
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this.movePageTo(this.draggedEl, this.hoveredEl);
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}
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attachDragDropCallbacks(div, imageSrc) {
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const onDragStart = () => {
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this.startDraggingPage(div, imageSrc);
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}
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const onMouseEnter = () => {
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if (this.pageDragging) {
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this.hoveredEl = div;
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div.classList.add('draghover');
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}
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}
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const onMouseLeave = () => {
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this.hoveredEl = undefined
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div.classList.remove('draghover');
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}
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div.addEventListener('dragstart', onDragStart);
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div.addEventListener('mouseenter', onMouseEnter);
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div.addEventListener('mouseleave', onMouseLeave);
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}
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}
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export default DragDropManager;
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37
src/main/resources/static/js/multitool/horizontalScroll.js
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37
src/main/resources/static/js/multitool/horizontalScroll.js
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const scrollDivHorizontally = (id) => {
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var scrollDelta = 0; // variable to store the accumulated scroll delta
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var isScrolling = false; // variable to track if scroll is already in progress
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const pagesContainerWrapper = document.getElementById(id);
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function scrollLoop() {
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// Scroll the div horizontally by a fraction of the accumulated scroll delta
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pagesContainerWrapper.scrollLeft += scrollDelta * 0.1;
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// Reduce the accumulated scroll delta by a fraction
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scrollDelta *= 0.9;
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// If scroll delta is still significant, continue the scroll loop
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if (Math.abs(scrollDelta) > 0.1) {
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requestAnimationFrame(scrollLoop);
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} else {
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isScrolling = false; // Reset scroll in progress flag
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}
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}
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const divToScrollHorizontally = document.getElementById(id)
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divToScrollHorizontally.addEventListener("wheel", function(e) {
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e.preventDefault(); // prevent default mousewheel behavior
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// Accumulate the horizontal scroll delta
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scrollDelta -= e.deltaX || e.wheelDeltaX || -e.deltaY || -e.wheelDeltaY;
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// If scroll is not already in progress, start the scroll loop
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if (!isScrolling) {
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isScrolling = true;
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requestAnimationFrame(scrollLoop);
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}
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});
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}
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export default scrollDivHorizontally;
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27
src/main/resources/static/js/multitool/imageHighlighter.js
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27
src/main/resources/static/js/multitool/imageHighlighter.js
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const getImageHighlighterCallback = (id) => {
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const imageHighlighter = document.getElementById(id);
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imageHighlighter.onclick = () => {
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imageHighlighter.childNodes.forEach((child) => {
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child.classList.add('remove');
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setTimeout(() => {
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imageHighlighter.removeChild(child);
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}, 100)
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})
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}
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const imageHighlightCallback = (highlightEvent) => {
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var bigImg = document.createElement('img');
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bigImg.onclick = (imageClickEvent) => {
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// This prevents the highlighter's onClick from closing the image when clicking on the image
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// instead of next to it.
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imageClickEvent.preventDefault();
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imageClickEvent.stopPropagation();
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};
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bigImg.src = highlightEvent.target.src;
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imageHighlighter.appendChild(bigImg);
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};
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return imageHighlightCallback
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}
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export default getImageHighlighterCallback;
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156
src/main/resources/static/js/multitool/pdfActions.js
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156
src/main/resources/static/js/multitool/pdfActions.js
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class PdfActionsManager {
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callbacks;
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pageDirection;
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constructor(id, { movePageTo, addPdfs, rotateElement }) {
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this.pageDirection = document.documentElement.getAttribute("lang-direction");
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const moveUpButtonCallback = e => {
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var imgContainer = e.target;
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while (!imgContainer.classList.contains(id)) {
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imgContainer = imgContainer.parentNode;
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}
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const sibling = imgContainer.previousSibling;
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if (sibling) {
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movePageTo(imgContainer, sibling, true);
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}
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};
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const moveDownButtonCallback = e => {
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var imgContainer = e.target;
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while (!imgContainer.classList.contains(id)) {
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imgContainer = imgContainer.parentNode;
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}
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const sibling = imgContainer.nextSibling;
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if (sibling) {
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movePageTo(imgContainer, sibling.nextSibling, true);
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}
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};
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const rotateCCWButtonCallback = e => {
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var imgContainer = e.target;
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while (!imgContainer.classList.contains(id)) {
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imgContainer = imgContainer.parentNode;
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}
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const img = imgContainer.querySelector("img");
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rotateElement(img, -90)
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};
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const rotateCWButtonCallback = e => {
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var imgContainer = e.target;
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while (!imgContainer.classList.contains(id)) {
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imgContainer = imgContainer.parentNode;
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}
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const img = imgContainer.querySelector("img");
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rotateElement(img, 90)
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};
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const deletePageButtonCallback = e => {
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var imgContainer = e.target;
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while (!imgContainer.classList.contains(id)) {
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imgContainer = imgContainer.parentNode;
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}
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pagesContainer.removeChild(imgContainer);
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};
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const insertFileButtonCallback = e => {
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var imgContainer = e.target;
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while (!imgContainer.classList.contains(id)) {
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imgContainer = imgContainer.parentNode;
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}
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addPdfs(imgContainer)
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};
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this.callbacks = {
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moveUpButtonCallback,
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moveDownButtonCallback,
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rotateCCWButtonCallback,
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rotateCWButtonCallback,
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deletePageButtonCallback,
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insertFileButtonCallback
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}
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}
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attachPDFActions(div) {
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const leftDirection = this.pageDirection === 'rtl' ? 'right' : 'left'
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const rightDirection = this.pageDirection === 'rtl' ? 'left' : 'right'
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const buttonContainer = document.createElement('div');
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buttonContainer.classList.add("button-container");
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const moveUp = document.createElement('button');
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moveUp.classList.add("move-left-button","btn", "btn-secondary");
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moveUp.innerHTML = `<i class="bi bi-arrow-${leftDirection}-short"></i>`;
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moveUp.onclick = this.callbacks.moveUpButtonCallback;
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buttonContainer.appendChild(moveUp);
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const moveDown = document.createElement('button');
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moveDown.classList.add("move-right-button","btn", "btn-secondary");
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moveDown.innerHTML = `<i class="bi bi-arrow-${rightDirection}-short"></i>`;
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moveDown.onclick = this.callbacks.moveDownButtonCallback;
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buttonContainer.appendChild(moveDown);
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const rotateCCW = document.createElement('button');
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rotateCCW.classList.add("btn", "btn-secondary");
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rotateCCW.innerHTML = `<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-arrow-counterclockwise" viewBox="0 0 16 16">
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<path fill-rule="evenodd" d="M8 3a5 5 0 1 1-4.546 2.914.5.5 0 0 0-.908-.417A6 6 0 1 0 8 2v1z" />
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<path d="M8 4.466V.534a.25.25 0 0 0-.41-.192L5.23 2.308a.25.25 0 0 0 0 .384l2.36 1.966A.25.25 0 0 0 8 4.466z" />
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</svg>`;
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rotateCCW.onclick = this.callbacks.rotateCCWButtonCallback;
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buttonContainer.appendChild(rotateCCW);
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const rotateCW = document.createElement('button');
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rotateCW.classList.add("btn", "btn-secondary");
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rotateCW.innerHTML = `<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-arrow-clockwise" viewBox="0 0 16 16">
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<path fill-rule="evenodd" d="M8 3a5 5 0 1 0 4.546 2.914.5.5 0 0 1 .908-.417A6 6 0 1 1 8 2v1z" />
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<path d="M8 4.466V.534a.25.25 0 0 1 .41-.192l2.36 1.966c.12.1.12.284 0 .384L8.41 4.658A.25.25 0 0 1 8 4.466z" />
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</svg>`;
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rotateCW.onclick = this.callbacks.rotateCWButtonCallback;
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buttonContainer.appendChild(rotateCW);
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const deletePage = document.createElement('button');
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deletePage.classList.add("btn", "btn-danger");
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deletePage.innerHTML = `<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-trash" viewBox="0 0 16 16">
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<path d="M5.5 5.5A.5.5 0 0 1 6 6v6a.5.5 0 0 1-1 0V6a.5.5 0 0 1 .5-.5Zm2.5 0a.5.5 0 0 1 .5.5v6a.5.5 0 0 1-1 0V6a.5.5 0 0 1 .5-.5Zm3 .5a.5.5 0 0 0-1 0v6a.5.5 0 0 0 1 0V6Z"/>
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<path d="M14.5 3a1 1 0 0 1-1 1H13v9a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V4h-.5a1 1 0 0 1-1-1V2a1 1 0 0 1 1-1H6a1 1 0 0 1 1-1h2a1 1 0 0 1 1 1h3.5a1 1 0 0 1 1 1v1ZM4.118 4 4 4.059V13a1 1 0 0 0 1 1h6a1 1 0 0 0 1-1V4.059L11.882 4H4.118ZM2.5 3h11V2h-11v1Z"/>
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</svg>`;
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deletePage.onclick = this.callbacks.deletePageButtonCallback;
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buttonContainer.appendChild(deletePage);
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div.appendChild(buttonContainer);
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const insertFileButtonContainer = document.createElement('div');
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insertFileButtonContainer.classList.add(
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"insert-file-button-container",
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leftDirection,
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`align-center-${leftDirection}`);
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const insertFileButton = document.createElement('button');
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insertFileButton.classList.add("btn", "btn-primary", "insert-file-button");
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insertFileButton.innerHTML = `<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-file-earmark-plus" viewBox="0 0 16 16">
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<path d="M8 6.5a.5.5 0 0 1 .5.5v1.5H10a.5.5 0 0 1 0 1H8.5V11a.5.5 0 0 1-1 0V9.5H6a.5.5 0 0 1 0-1h1.5V7a.5.5 0 0 1 .5-.5z"/>
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<path d="M14 4.5V14a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2V2a2 2 0 0 1 2-2h5.5L14 4.5zm-3 0A1.5 1.5 0 0 1 9.5 3V1H4a1 1 0 0 0-1 1v12a1 1 0 0 0 1 1h8a1 1 0 0 0 1-1V4.5h-2z"/>
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</svg>`;
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insertFileButton.onclick = this.callbacks.insertFileButtonCallback;
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insertFileButtonContainer.appendChild(insertFileButton);
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div.appendChild(insertFileButtonContainer);
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// add this button to every element, but only show it on the last one :D
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const insertFileButtonRightContainer = document.createElement('div');
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insertFileButtonRightContainer.classList.add(
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"insert-file-button-container",
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rightDirection,
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`align-center-${rightDirection}`);
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const insertFileButtonRight = document.createElement('button');
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insertFileButtonRight.classList.add("btn", "btn-primary", "insert-file-button");
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insertFileButtonRight.innerHTML = `<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-file-earmark-plus" viewBox="0 0 16 16">
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<path d="M8 6.5a.5.5 0 0 1 .5.5v1.5H10a.5.5 0 0 1 0 1H8.5V11a.5.5 0 0 1-1 0V9.5H6a.5.5 0 0 1 0-1h1.5V7a.5.5 0 0 1 .5-.5z"/>
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<path d="M14 4.5V14a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2V2a2 2 0 0 1 2-2h5.5L14 4.5zm-3 0A1.5 1.5 0 0 1 9.5 3V1H4a1 1 0 0 0-1 1v12a1 1 0 0 0 1 1h8a1 1 0 0 0 1-1V4.5h-2z"/>
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insertFileButtonRight</svg>`;
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insertFileButtonRight.onclick = () => addPdfs();
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insertFileButtonRightContainer.appendChild(insertFileButtonRight);
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div.appendChild(insertFileButtonRightContainer);
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}
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}
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export default PdfActionsManager;
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217
src/main/resources/static/js/multitool/pdfContainer.js
Normal file
217
src/main/resources/static/js/multitool/pdfContainer.js
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import DragDropManager from "./dragDrop.js";
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import scrollDivHorizontally from "./horizontalScroll.js";
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import getImageHighlighterCallback from "./imageHighlighter.js";
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import PdfActionsManager from './pdfActions.js';
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const createPdfContainer = (id, wrapperId, highlighterId, dragElId) => {
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var fileName = null;
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const pagesContainer = document.getElementById(id);
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const pagesContainerWrapper = document.getElementById(wrapperId);
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const movePageTo = (startElement, endElement, scrollTo = false) => {
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const childArray = Array.from(pagesContainer.childNodes);
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const startIndex = childArray.indexOf(startElement);
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const endIndex = childArray.indexOf(endElement);
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pagesContainer.removeChild(startElement);
|
||||||
|
if(!endElement) {
|
||||||
|
pagesContainer.append(startElement);
|
||||||
|
} else {
|
||||||
|
pagesContainer.insertBefore(startElement, endElement);
|
||||||
|
}
|
||||||
|
|
||||||
|
if(scrollTo) {
|
||||||
|
const { width } = startElement.getBoundingClientRect();
|
||||||
|
const vector = (endIndex !== -1 && startIndex > endIndex)
|
||||||
|
? 0-width
|
||||||
|
: width;
|
||||||
|
|
||||||
|
pagesContainerWrapper.scroll({
|
||||||
|
left: pagesContainerWrapper.scrollLeft + vector,
|
||||||
|
})
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
function addPdfs(nextSiblingElement) {
|
||||||
|
var input = document.createElement('input');
|
||||||
|
input.type = 'file';
|
||||||
|
input.multiple = true;
|
||||||
|
input.setAttribute("accept", "application/pdf");
|
||||||
|
|
||||||
|
input.onchange = async(e) => {
|
||||||
|
const files = e.target.files;
|
||||||
|
fileName = files[0].name;
|
||||||
|
for (var i=0; i < files.length; i++) {
|
||||||
|
addPdfFile(files[i], nextSiblingElement);
|
||||||
|
}
|
||||||
|
|
||||||
|
document.querySelectorAll(".enable-on-file").forEach(element => {
|
||||||
|
element.disabled = false;
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
input.click();
|
||||||
|
}
|
||||||
|
|
||||||
|
function rotateElement(element, deg) {
|
||||||
|
var lastTransform = element.style.rotate;
|
||||||
|
if (!lastTransform) {
|
||||||
|
lastTransform = "0";
|
||||||
|
}
|
||||||
|
const lastAngle = parseInt(lastTransform.replace(/[^\d-]/g, ''));
|
||||||
|
const newAngle = lastAngle + deg;
|
||||||
|
|
||||||
|
element.style.rotate = newAngle + "deg";
|
||||||
|
}
|
||||||
|
|
||||||
|
scrollDivHorizontally(wrapperId);
|
||||||
|
|
||||||
|
var imageHighlighterCallback;
|
||||||
|
if (highlighterId) {
|
||||||
|
imageHighlighterCallback = getImageHighlighterCallback(highlighterId);
|
||||||
|
}
|
||||||
|
var dragDropManager;
|
||||||
|
if(dragElId) {
|
||||||
|
dragDropManager = new DragDropManager('drag-container', movePageTo);
|
||||||
|
}
|
||||||
|
|
||||||
|
var pdfActionManager = new PdfActionsManager('page-container', { movePageTo, addPdfs, rotateElement });
|
||||||
|
|
||||||
|
async function addPdfFile(file, nextSiblingElement) {
|
||||||
|
const { renderer, pdfDocument } = await loadFile(file);
|
||||||
|
|
||||||
|
for (var i=0; i < renderer.pageCount; i++) {
|
||||||
|
const div = document.createElement('div');
|
||||||
|
|
||||||
|
div.classList.add("page-container");
|
||||||
|
|
||||||
|
var img = document.createElement('img');
|
||||||
|
img.classList.add('page-image')
|
||||||
|
const imageSrc = await renderer.renderPage(i)
|
||||||
|
img.src = imageSrc;
|
||||||
|
img.pageIdx = i;
|
||||||
|
img.rend = renderer;
|
||||||
|
img.doc = pdfDocument;
|
||||||
|
div.appendChild(img);
|
||||||
|
|
||||||
|
|
||||||
|
if(dragDropManager) {
|
||||||
|
dragDropManager.attachDragDropCallbacks(div, imageSrc);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Making pages larger when clicking on them
|
||||||
|
*/
|
||||||
|
if(imageHighlighterCallback) {
|
||||||
|
img.addEventListener('click', imageHighlighterCallback)
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Rendering the various buttons to manipulate and move pdf pages
|
||||||
|
*/
|
||||||
|
pdfActionManager.attachPDFActions(div);
|
||||||
|
|
||||||
|
if (nextSiblingElement) {
|
||||||
|
pagesContainer.insertBefore(div, nextSiblingElement);
|
||||||
|
} else {
|
||||||
|
pagesContainer.appendChild(div);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
async function toRenderer(objectUrl) {
|
||||||
|
const pdf = await pdfjsLib.getDocument(objectUrl).promise;
|
||||||
|
return {
|
||||||
|
document: pdf,
|
||||||
|
pageCount: pdf.numPages,
|
||||||
|
renderPage: async function(pageIdx) {
|
||||||
|
const page = await this.document.getPage(pageIdx+1);
|
||||||
|
|
||||||
|
const canvas = document.createElement("canvas");
|
||||||
|
|
||||||
|
// set the canvas size to the size of the page
|
||||||
|
if (page.rotate == 90 || page.rotate == 270) {
|
||||||
|
canvas.width = page.view[3];
|
||||||
|
canvas.height = page.view[2];
|
||||||
|
} else {
|
||||||
|
canvas.width = page.view[2];
|
||||||
|
canvas.height = page.view[3];
|
||||||
|
}
|
||||||
|
|
||||||
|
// render the page onto the canvas
|
||||||
|
var renderContext = {
|
||||||
|
canvasContext: canvas.getContext("2d"),
|
||||||
|
viewport: page.getViewport({ scale: 1 })
|
||||||
|
};
|
||||||
|
|
||||||
|
await page.render(renderContext).promise;
|
||||||
|
return canvas.toDataURL();
|
||||||
|
}
|
||||||
|
};
|
||||||
|
}
|
||||||
|
|
||||||
|
async function toPdfLib(objectUrl) {
|
||||||
|
const existingPdfBytes = await fetch(objectUrl).then(res => res.arrayBuffer());
|
||||||
|
const pdfDoc = await PDFLib.PDFDocument.load(existingPdfBytes);
|
||||||
|
return pdfDoc;
|
||||||
|
}
|
||||||
|
|
||||||
|
async function loadFile(file) {
|
||||||
|
var objectUrl = URL.createObjectURL(file);
|
||||||
|
var pdfDocument = await toPdfLib(objectUrl);
|
||||||
|
var renderer = await toRenderer(objectUrl);
|
||||||
|
return { renderer, pdfDocument };
|
||||||
|
}
|
||||||
|
|
||||||
|
function rotateAll(deg) {
|
||||||
|
for (var i=0; i<pagesContainer.childNodes.length; i++) {
|
||||||
|
const img = pagesContainer.childNodes[i].querySelector("img");
|
||||||
|
if (!img) continue;
|
||||||
|
rotateElement(img, deg)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
async function exportPdf() {
|
||||||
|
const pdfDoc = await PDFLib.PDFDocument.create();
|
||||||
|
for (var i=0; i<pagesContainer.childNodes.length; i++) {
|
||||||
|
const img = pagesContainer.childNodes[i].querySelector("img");
|
||||||
|
if (!img) continue;
|
||||||
|
const pages = await pdfDoc.copyPages(img.doc, [img.pageIdx])
|
||||||
|
const page = pages[0];
|
||||||
|
|
||||||
|
const rotation = img.style.rotate;
|
||||||
|
if (rotation) {
|
||||||
|
const rotationAngle = parseInt(rotation.replace(/[^\d-]/g, ''));
|
||||||
|
page.setRotation(PDFLib.degrees(page.getRotation().angle + rotationAngle))
|
||||||
|
}
|
||||||
|
|
||||||
|
pdfDoc.addPage(page);
|
||||||
|
}
|
||||||
|
const pdfBytes = await pdfDoc.save();
|
||||||
|
const pdfBlob = new Blob([pdfBytes], { type: 'application/pdf' });
|
||||||
|
const url = URL.createObjectURL(pdfBlob);
|
||||||
|
const downloadOption = localStorage.getItem('downloadOption');
|
||||||
|
|
||||||
|
if (downloadOption === 'sameWindow') {
|
||||||
|
// Open the file in the same window
|
||||||
|
window.location.href = url;
|
||||||
|
} else if (downloadOption === 'newWindow') {
|
||||||
|
// Open the file in a new window
|
||||||
|
window.open(url, '_blank');
|
||||||
|
} else {
|
||||||
|
// Download the file
|
||||||
|
const downloadLink = document.createElement('a');
|
||||||
|
downloadLink.href = url;
|
||||||
|
downloadLink.download = fileName ? fileName : 'managed.pdf';
|
||||||
|
downloadLink.click();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
return {
|
||||||
|
addPdfs,
|
||||||
|
rotateAll,
|
||||||
|
exportPdf,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
export default createPdfContainer;
|
||||||
|
|
@ -3,7 +3,6 @@
|
||||||
|
|
||||||
<th:block th:insert="~{fragments/common :: head(title=#{multiTool.title})}"></th:block>
|
<th:block th:insert="~{fragments/common :: head(title=#{multiTool.title})}"></th:block>
|
||||||
|
|
||||||
|
|
||||||
<body>
|
<body>
|
||||||
<div id="image-highlighter"></div>
|
<div id="image-highlighter"></div>
|
||||||
<div id="page-container">
|
<div id="page-container">
|
||||||
|
|
@ -60,460 +59,22 @@
|
||||||
<div th:insert="~{fragments/footer.html :: footer}"></div>
|
<div th:insert="~{fragments/footer.html :: footer}"></div>
|
||||||
</div>
|
</div>
|
||||||
<div id="drag-container"></div>
|
<div id="drag-container"></div>
|
||||||
<script>
|
|
||||||
var fileName = null;
|
<script type="module">
|
||||||
|
import createPdfContainer from '/js/multitool/pdfContainer.js';
|
||||||
/**
|
const {
|
||||||
*
|
addPdfs,
|
||||||
* Manage Page container scroll
|
exportPdf,
|
||||||
*
|
rotateAll,
|
||||||
*/
|
} = createPdfContainer(
|
||||||
const pagesContainer = document.getElementById("pages-container");
|
'pages-container',
|
||||||
const pagesContainerWrapper = document.getElementById("pages-container-wrapper")
|
'pages-container-wrapper',
|
||||||
|
'image-highlighter',
|
||||||
const pageDirection = document.documentElement.getAttribute("lang-direction");
|
'drag-container'
|
||||||
var pageDragging = false;
|
);
|
||||||
var scrollDelta = 0; // variable to store the accumulated scroll delta
|
window.addPdfs = addPdfs;
|
||||||
var isScrolling = false; // variable to track if scroll is already in progress
|
window.exportPdf = exportPdf;
|
||||||
|
window.rotateAll = rotateAll;
|
||||||
pagesContainerWrapper.addEventListener("wheel", function(e) {
|
|
||||||
e.preventDefault(); // prevent default mousewheel behavior
|
|
||||||
|
|
||||||
// Accumulate the horizontal scroll delta
|
|
||||||
scrollDelta -= e.deltaX || e.wheelDeltaX || -e.deltaY || -e.wheelDeltaY;
|
|
||||||
|
|
||||||
// If scroll is not already in progress, start the scroll loop
|
|
||||||
if (!isScrolling) {
|
|
||||||
isScrolling = true;
|
|
||||||
requestAnimationFrame(scrollLoop);
|
|
||||||
}
|
|
||||||
});
|
|
||||||
|
|
||||||
function scrollLoop() {
|
|
||||||
// Scroll the div horizontally by a fraction of the accumulated scroll delta
|
|
||||||
pagesContainerWrapper.scrollLeft += scrollDelta * 0.1;
|
|
||||||
|
|
||||||
// Reduce the accumulated scroll delta by a fraction
|
|
||||||
scrollDelta *= 0.9;
|
|
||||||
|
|
||||||
// If scroll delta is still significant, continue the scroll loop
|
|
||||||
if (Math.abs(scrollDelta) > 0.1) {
|
|
||||||
requestAnimationFrame(scrollLoop);
|
|
||||||
} else {
|
|
||||||
isScrolling = false; // Reset scroll in progress flag
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
*
|
|
||||||
* Manage image highlighter clearing
|
|
||||||
*
|
|
||||||
*/
|
|
||||||
const imageHighlighter = document.getElementById('image-highlighter');
|
|
||||||
imageHighlighter.onclick = () => {
|
|
||||||
imageHighlighter.childNodes.forEach((child) => {
|
|
||||||
child.classList.add('remove');
|
|
||||||
setTimeout(() => {
|
|
||||||
imageHighlighter.removeChild(child);
|
|
||||||
}, 100)
|
|
||||||
})
|
|
||||||
}
|
|
||||||
|
|
||||||
const imageHighlightCallback = (highlightEvent) => {
|
|
||||||
var bigImg = document.createElement('img');
|
|
||||||
bigImg.onclick = (imageClickEvent) => {
|
|
||||||
// This prevents the highlighter's onClick from closing the image when clicking on the image
|
|
||||||
// instead of next to it.
|
|
||||||
imageClickEvent.preventDefault();
|
|
||||||
imageClickEvent.stopPropagation();
|
|
||||||
};
|
|
||||||
bigImg.src = highlightEvent.target.src;
|
|
||||||
imageHighlighter.appendChild(bigImg);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/**
|
|
||||||
*
|
|
||||||
* Manage visual aspect of dragging images
|
|
||||||
*
|
|
||||||
*/
|
|
||||||
const dragContainer = document.getElementById('drag-container');
|
|
||||||
var draggedEl;
|
|
||||||
var draggedImageEl;
|
|
||||||
var hoveredEl;
|
|
||||||
|
|
||||||
const startDraggingPage = (div, imageSrc) => {
|
|
||||||
pageDragging = true;
|
|
||||||
draggedEl = div;
|
|
||||||
div.classList.add('dragging');
|
|
||||||
const imgEl = document.createElement('img');
|
|
||||||
imgEl.classList.add('dragged-img');
|
|
||||||
imgEl.src = imageSrc;
|
|
||||||
draggedImageEl = imgEl;
|
|
||||||
draggedImageEl.style.left = screenX;
|
|
||||||
draggedImageEl.style.right = screenY;
|
|
||||||
dragContainer.appendChild(imgEl);
|
|
||||||
window.addEventListener('mouseup', (e) => {
|
|
||||||
stopDraggingPage();
|
|
||||||
})
|
|
||||||
window.addEventListener('mousemove', onDragEl)
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
const onDragEl = (mouseEvent) => {
|
|
||||||
const { clientX, clientY } = mouseEvent;
|
|
||||||
if(draggedImageEl) {
|
|
||||||
draggedImageEl.style.left = `${clientX}px`;
|
|
||||||
draggedImageEl.style.top = `${clientY}px`;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
const stopDraggingPage = () => {
|
|
||||||
window.removeEventListener('mousemove', onDragEl);
|
|
||||||
draggedImageEl = undefined;
|
|
||||||
pageDragging = false;
|
|
||||||
draggedEl.classList.remove('dragging');
|
|
||||||
hoveredEl.classList.remove('draghover');
|
|
||||||
dragContainer.childNodes.forEach((dragChild) => {
|
|
||||||
dragContainer.removeChild(dragChild);
|
|
||||||
})
|
|
||||||
movePageTo(draggedEl, hoveredEl);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/**
|
|
||||||
*
|
|
||||||
* Methods for managing PDFs
|
|
||||||
*
|
|
||||||
*/
|
|
||||||
function addPdfs(nextSiblingElement) {
|
|
||||||
var input = document.createElement('input');
|
|
||||||
input.type = 'file';
|
|
||||||
input.multiple = true;
|
|
||||||
input.setAttribute("accept", "application/pdf");
|
|
||||||
|
|
||||||
input.onchange = async(e) => {
|
|
||||||
const files = e.target.files;
|
|
||||||
fileName = files[0].name;
|
|
||||||
for (var i=0; i < files.length; i++) {
|
|
||||||
addPdfFile(files[i], nextSiblingElement);
|
|
||||||
}
|
|
||||||
|
|
||||||
document.querySelectorAll(".enable-on-file").forEach(element => {
|
|
||||||
element.disabled = false;
|
|
||||||
});
|
|
||||||
}
|
|
||||||
|
|
||||||
input.click();
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
const movePageTo = (startElement, endElement, scrollTo = false) => {
|
|
||||||
const childArray = Array.from(pagesContainer.childNodes);
|
|
||||||
const startIndex = childArray.indexOf(startElement);
|
|
||||||
const endIndex = childArray.indexOf(endElement);
|
|
||||||
pagesContainer.removeChild(startElement);
|
|
||||||
if(!endElement) {
|
|
||||||
pagesContainer.append(startElement);
|
|
||||||
} else {
|
|
||||||
pagesContainer.insertBefore(startElement, endElement);
|
|
||||||
}
|
|
||||||
|
|
||||||
if(scrollTo) {
|
|
||||||
const { width } = startElement.getBoundingClientRect();
|
|
||||||
const vector = (endIndex !== -1 && startIndex > endIndex)
|
|
||||||
? 0-width
|
|
||||||
: width;
|
|
||||||
|
|
||||||
pagesContainerWrapper.scroll({
|
|
||||||
left: pagesContainerWrapper.scrollLeft + vector,
|
|
||||||
})
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
async function addPdfFile(file, nextSiblingElement) {
|
|
||||||
const { renderer, pdfDocument } = await loadFile(file);
|
|
||||||
|
|
||||||
const moveUpButtonCallback = e => {
|
|
||||||
var imgContainer = e.target;
|
|
||||||
const startingPosition = imgContainer.getBoundingClientRect();
|
|
||||||
while (!imgContainer.classList.contains("page-container")) {
|
|
||||||
imgContainer = imgContainer.parentNode;
|
|
||||||
}
|
|
||||||
|
|
||||||
const sibling = imgContainer.previousSibling;
|
|
||||||
if (sibling) {
|
|
||||||
movePageTo(imgContainer, sibling, true);
|
|
||||||
}
|
|
||||||
};
|
|
||||||
const moveDownButtonCallback = e => {
|
|
||||||
var imgContainer = e.target;
|
|
||||||
while (!imgContainer.classList.contains("page-container")) {
|
|
||||||
imgContainer = imgContainer.parentNode;
|
|
||||||
}
|
|
||||||
const sibling = imgContainer.nextSibling;
|
|
||||||
if (sibling) {
|
|
||||||
movePageTo(imgContainer, sibling.nextSibling, true);
|
|
||||||
}
|
|
||||||
};
|
|
||||||
const rotateCCWButtonCallback = e => {
|
|
||||||
var imgContainer = e.target;
|
|
||||||
while (!imgContainer.classList.contains("page-container")) {
|
|
||||||
imgContainer = imgContainer.parentNode;
|
|
||||||
}
|
|
||||||
const img = imgContainer.querySelector("img");
|
|
||||||
|
|
||||||
rotateElement(img, -90)
|
|
||||||
};
|
|
||||||
const rotateCWButtonCallback = e => {
|
|
||||||
var imgContainer = e.target;
|
|
||||||
while (!imgContainer.classList.contains("page-container")) {
|
|
||||||
imgContainer = imgContainer.parentNode;
|
|
||||||
}
|
|
||||||
const img = imgContainer.querySelector("img");
|
|
||||||
|
|
||||||
rotateElement(img, 90)
|
|
||||||
};
|
|
||||||
const deletePageButtonCallback = e => {
|
|
||||||
var imgContainer = e.target;
|
|
||||||
while (!imgContainer.classList.contains("page-container")) {
|
|
||||||
imgContainer = imgContainer.parentNode;
|
|
||||||
}
|
|
||||||
pagesContainer.removeChild(imgContainer);
|
|
||||||
};
|
|
||||||
const insertFileButtonCallback = e => {
|
|
||||||
var imgContainer = e.target;
|
|
||||||
while (!imgContainer.classList.contains("page-container")) {
|
|
||||||
imgContainer = imgContainer.parentNode;
|
|
||||||
}
|
|
||||||
addPdfs(imgContainer)
|
|
||||||
};
|
|
||||||
|
|
||||||
for (var i=0; i < renderer.pageCount; i++) {
|
|
||||||
const div = document.createElement('div');
|
|
||||||
|
|
||||||
div.addEventListener('dragstart', (e) => {
|
|
||||||
startDraggingPage(div, imageSrc);
|
|
||||||
});
|
|
||||||
|
|
||||||
div.addEventListener('mouseenter', () => {
|
|
||||||
if (pageDragging) {
|
|
||||||
hoveredEl = div;
|
|
||||||
div.classList.add('draghover');
|
|
||||||
}
|
|
||||||
})
|
|
||||||
|
|
||||||
div.addEventListener('mouseleave', () => {
|
|
||||||
hoveredEl = undefined;
|
|
||||||
div.classList.remove('draghover');
|
|
||||||
})
|
|
||||||
|
|
||||||
div.classList.add("page-container");
|
|
||||||
|
|
||||||
var img = document.createElement('img');
|
|
||||||
img.classList.add('page-image')
|
|
||||||
const imageSrc = await renderer.renderPage(i)
|
|
||||||
img.src = imageSrc;
|
|
||||||
img.pageIdx = i;
|
|
||||||
img.rend = renderer;
|
|
||||||
img.doc = pdfDocument;
|
|
||||||
div.appendChild(img);
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Making pages larger when clicking on them
|
|
||||||
*/
|
|
||||||
img.addEventListener('click',imageHighlightCallback)
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Rendering the various buttons to manipulate and move pdf pages
|
|
||||||
*/
|
|
||||||
|
|
||||||
const leftDirection = pageDirection === 'rtl' ? 'right' : 'left'
|
|
||||||
const rightDirection = pageDirection === 'rtl' ? 'left' : 'right'
|
|
||||||
const buttonContainer = document.createElement('div');
|
|
||||||
buttonContainer.classList.add("button-container");
|
|
||||||
|
|
||||||
const moveUp = document.createElement('button');
|
|
||||||
moveUp.classList.add("move-left-button","btn", "btn-secondary");
|
|
||||||
moveUp.innerHTML = `<i class="bi bi-arrow-${leftDirection}-short"></i>`;
|
|
||||||
moveUp.onclick = moveUpButtonCallback;
|
|
||||||
buttonContainer.appendChild(moveUp);
|
|
||||||
|
|
||||||
const moveDown = document.createElement('button');
|
|
||||||
moveDown.classList.add("move-right-button","btn", "btn-secondary");
|
|
||||||
moveDown.innerHTML = `<i class="bi bi-arrow-${rightDirection}-short"></i>`;
|
|
||||||
moveDown.onclick = moveDownButtonCallback;
|
|
||||||
buttonContainer.appendChild(moveDown);
|
|
||||||
|
|
||||||
const rotateCCW = document.createElement('button');
|
|
||||||
rotateCCW.classList.add("btn", "btn-secondary");
|
|
||||||
rotateCCW.innerHTML = `<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-arrow-counterclockwise" viewBox="0 0 16 16">
|
|
||||||
<path fill-rule="evenodd" d="M8 3a5 5 0 1 1-4.546 2.914.5.5 0 0 0-.908-.417A6 6 0 1 0 8 2v1z" />
|
|
||||||
<path d="M8 4.466V.534a.25.25 0 0 0-.41-.192L5.23 2.308a.25.25 0 0 0 0 .384l2.36 1.966A.25.25 0 0 0 8 4.466z" />
|
|
||||||
</svg>`;
|
|
||||||
rotateCCW.onclick = rotateCCWButtonCallback;
|
|
||||||
buttonContainer.appendChild(rotateCCW);
|
|
||||||
|
|
||||||
const rotateCW = document.createElement('button');
|
|
||||||
rotateCW.classList.add("btn", "btn-secondary");
|
|
||||||
rotateCW.innerHTML = `<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-arrow-clockwise" viewBox="0 0 16 16">
|
|
||||||
<path fill-rule="evenodd" d="M8 3a5 5 0 1 0 4.546 2.914.5.5 0 0 1 .908-.417A6 6 0 1 1 8 2v1z" />
|
|
||||||
<path d="M8 4.466V.534a.25.25 0 0 1 .41-.192l2.36 1.966c.12.1.12.284 0 .384L8.41 4.658A.25.25 0 0 1 8 4.466z" />
|
|
||||||
</svg>`;
|
|
||||||
rotateCW.onclick = rotateCWButtonCallback;
|
|
||||||
buttonContainer.appendChild(rotateCW);
|
|
||||||
|
|
||||||
const deletePage = document.createElement('button');
|
|
||||||
deletePage.classList.add("btn", "btn-danger");
|
|
||||||
deletePage.innerHTML = `<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-trash" viewBox="0 0 16 16">
|
|
||||||
<path d="M5.5 5.5A.5.5 0 0 1 6 6v6a.5.5 0 0 1-1 0V6a.5.5 0 0 1 .5-.5Zm2.5 0a.5.5 0 0 1 .5.5v6a.5.5 0 0 1-1 0V6a.5.5 0 0 1 .5-.5Zm3 .5a.5.5 0 0 0-1 0v6a.5.5 0 0 0 1 0V6Z"/>
|
|
||||||
<path d="M14.5 3a1 1 0 0 1-1 1H13v9a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V4h-.5a1 1 0 0 1-1-1V2a1 1 0 0 1 1-1H6a1 1 0 0 1 1-1h2a1 1 0 0 1 1 1h3.5a1 1 0 0 1 1 1v1ZM4.118 4 4 4.059V13a1 1 0 0 0 1 1h6a1 1 0 0 0 1-1V4.059L11.882 4H4.118ZM2.5 3h11V2h-11v1Z"/>
|
|
||||||
</svg>`;
|
|
||||||
deletePage.onclick = deletePageButtonCallback;
|
|
||||||
buttonContainer.appendChild(deletePage);
|
|
||||||
|
|
||||||
div.appendChild(buttonContainer);
|
|
||||||
|
|
||||||
const insertFileButtonContainer = document.createElement('div');
|
|
||||||
|
|
||||||
insertFileButtonContainer.classList.add(
|
|
||||||
"insert-file-button-container",
|
|
||||||
leftDirection,
|
|
||||||
`align-center-${leftDirection}`);
|
|
||||||
|
|
||||||
const insertFileButton = document.createElement('button');
|
|
||||||
insertFileButton.classList.add("btn", "btn-primary", "insert-file-button");
|
|
||||||
insertFileButton.innerHTML = `<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-file-earmark-plus" viewBox="0 0 16 16">
|
|
||||||
<path d="M8 6.5a.5.5 0 0 1 .5.5v1.5H10a.5.5 0 0 1 0 1H8.5V11a.5.5 0 0 1-1 0V9.5H6a.5.5 0 0 1 0-1h1.5V7a.5.5 0 0 1 .5-.5z"/>
|
|
||||||
<path d="M14 4.5V14a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2V2a2 2 0 0 1 2-2h5.5L14 4.5zm-3 0A1.5 1.5 0 0 1 9.5 3V1H4a1 1 0 0 0-1 1v12a1 1 0 0 0 1 1h8a1 1 0 0 0 1-1V4.5h-2z"/>
|
|
||||||
</svg>`;
|
|
||||||
insertFileButton.onclick = insertFileButtonCallback;
|
|
||||||
insertFileButtonContainer.appendChild(insertFileButton);
|
|
||||||
|
|
||||||
div.appendChild(insertFileButtonContainer);
|
|
||||||
|
|
||||||
// add this button to every element, but only show it on the last one :D
|
|
||||||
const insertFileButtonRightContainer = document.createElement('div');
|
|
||||||
insertFileButtonRightContainer.classList.add(
|
|
||||||
"insert-file-button-container",
|
|
||||||
rightDirection,
|
|
||||||
`align-center-${rightDirection}`);
|
|
||||||
|
|
||||||
const insertFileButtonRight = document.createElement('button');
|
|
||||||
insertFileButtonRight.classList.add("btn", "btn-primary", "insert-file-button");
|
|
||||||
insertFileButtonRight.innerHTML = `<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-file-earmark-plus" viewBox="0 0 16 16">
|
|
||||||
<path d="M8 6.5a.5.5 0 0 1 .5.5v1.5H10a.5.5 0 0 1 0 1H8.5V11a.5.5 0 0 1-1 0V9.5H6a.5.5 0 0 1 0-1h1.5V7a.5.5 0 0 1 .5-.5z"/>
|
|
||||||
<path d="M14 4.5V14a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2V2a2 2 0 0 1 2-2h5.5L14 4.5zm-3 0A1.5 1.5 0 0 1 9.5 3V1H4a1 1 0 0 0-1 1v12a1 1 0 0 0 1 1h8a1 1 0 0 0 1-1V4.5h-2z"/>
|
|
||||||
insertFileButtonRight</svg>`;
|
|
||||||
insertFileButtonRight.onclick = () => addPdfs();
|
|
||||||
insertFileButtonRightContainer.appendChild(insertFileButtonRight);
|
|
||||||
|
|
||||||
div.appendChild(insertFileButtonRightContainer);
|
|
||||||
|
|
||||||
if (nextSiblingElement) {
|
|
||||||
pagesContainer.insertBefore(div, nextSiblingElement);
|
|
||||||
} else {
|
|
||||||
pagesContainer.appendChild(div);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
function rotateElement(element, deg) {
|
|
||||||
var lastTransform = element.style.rotate;
|
|
||||||
if (!lastTransform) {
|
|
||||||
lastTransform = "0";
|
|
||||||
}
|
|
||||||
const lastAngle = parseInt(lastTransform.replace(/[^\d-]/g, ''));
|
|
||||||
const newAngle = lastAngle + deg;
|
|
||||||
|
|
||||||
element.style.rotate = newAngle + "deg";
|
|
||||||
}
|
|
||||||
|
|
||||||
function rotateAll(deg) {
|
|
||||||
for (var i=0; i<pagesContainer.childNodes.length; i++) {
|
|
||||||
const img = pagesContainer.childNodes[i].querySelector("img");
|
|
||||||
if (!img) continue;
|
|
||||||
rotateElement(img, deg)
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
async function exportPdf() {
|
|
||||||
const pdfDoc = await PDFLib.PDFDocument.create();
|
|
||||||
for (var i=0; i<pagesContainer.childNodes.length; i++) {
|
|
||||||
const img = pagesContainer.childNodes[i].querySelector("img");
|
|
||||||
if (!img) continue;
|
|
||||||
const pages = await pdfDoc.copyPages(img.doc, [img.pageIdx])
|
|
||||||
const page = pages[0];
|
|
||||||
|
|
||||||
const rotation = img.style.rotate;
|
|
||||||
if (rotation) {
|
|
||||||
const rotationAngle = parseInt(rotation.replace(/[^\d-]/g, ''));
|
|
||||||
page.setRotation(PDFLib.degrees(page.getRotation().angle + rotationAngle))
|
|
||||||
}
|
|
||||||
|
|
||||||
pdfDoc.addPage(page);
|
|
||||||
}
|
|
||||||
const pdfBytes = await pdfDoc.save();
|
|
||||||
const pdfBlob = new Blob([pdfBytes], { type: 'application/pdf' });
|
|
||||||
const url = URL.createObjectURL(pdfBlob);
|
|
||||||
const downloadOption = localStorage.getItem('downloadOption');
|
|
||||||
|
|
||||||
if (downloadOption === 'sameWindow') {
|
|
||||||
// Open the file in the same window
|
|
||||||
window.location.href = url;
|
|
||||||
} else if (downloadOption === 'newWindow') {
|
|
||||||
// Open the file in a new window
|
|
||||||
window.open(url, '_blank');
|
|
||||||
} else {
|
|
||||||
// Download the file
|
|
||||||
const downloadLink = document.createElement('a');
|
|
||||||
downloadLink.href = url;
|
|
||||||
downloadLink.download = fileName ? fileName : 'managed.pdf';
|
|
||||||
downloadLink.click();
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
async function loadFile(file) {
|
|
||||||
var objectUrl = URL.createObjectURL(file);
|
|
||||||
var pdfDocument = await toPdfLib(objectUrl);
|
|
||||||
var renderer = await toRenderer(objectUrl);
|
|
||||||
return { renderer, pdfDocument };
|
|
||||||
}
|
|
||||||
async function toPdfLib(objectUrl) {
|
|
||||||
const existingPdfBytes = await fetch(objectUrl).then(res => res.arrayBuffer());
|
|
||||||
const pdfDoc = await PDFLib.PDFDocument.load(existingPdfBytes);
|
|
||||||
return pdfDoc;
|
|
||||||
}
|
|
||||||
async function toRenderer(objectUrl) {
|
|
||||||
const pdf = await pdfjsLib.getDocument(objectUrl).promise;
|
|
||||||
return {
|
|
||||||
document: pdf,
|
|
||||||
pageCount: pdf.numPages,
|
|
||||||
renderPage: async function(pageIdx) {
|
|
||||||
const page = await this.document.getPage(pageIdx+1);
|
|
||||||
|
|
||||||
const canvas = document.createElement("canvas");
|
|
||||||
|
|
||||||
// set the canvas size to the size of the page
|
|
||||||
if (page.rotate == 90 || page.rotate == 270) {
|
|
||||||
canvas.width = page.view[3];
|
|
||||||
canvas.height = page.view[2];
|
|
||||||
} else {
|
|
||||||
canvas.width = page.view[2];
|
|
||||||
canvas.height = page.view[3];
|
|
||||||
}
|
|
||||||
|
|
||||||
// render the page onto the canvas
|
|
||||||
var renderContext = {
|
|
||||||
canvasContext: canvas.getContext("2d"),
|
|
||||||
viewport: page.getViewport({ scale: 1 })
|
|
||||||
};
|
|
||||||
|
|
||||||
await page.render(renderContext).promise;
|
|
||||||
return canvas.toDataURL();
|
|
||||||
}
|
|
||||||
};
|
|
||||||
}
|
|
||||||
</script>
|
</script>
|
||||||
|
|
||||||
<style>
|
<style>
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue