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Page rotation

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This commit is contained in:
Vincent LAURENT 2022-04-05 01:11:03 +02:00
parent 5332629032
commit c7811b437b
2 changed files with 36 additions and 23 deletions
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8
public/css/app.css
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@ -34,13 +34,17 @@
max-height: 200px;
}
.canvas-container .btn-drag {
.canvas-container .btn-drag, .canvas-container .btn-rotate {
font-size: 30px;
cursor: move;
background: rgb(255,255,255,0.6);
opacity: 0;
}
.canvas-container:hover .btn-drag {
.canvas-container .btn-rotate {
cursor: pointer;
}
.canvas-container:hover .btn-drag, .canvas-container:hover .btn-rotate {
opacity: 1;
}

51
public/js/organization.js
View file

@ -9,6 +9,7 @@ if(is_mobile()) {
var pdfjsLib = window['pdfjs-dist/build/pdf'];
pdfjsLib.GlobalWorkerOptions.workerSrc = '/vendor/pdf.worker.js?legacy';
var nbPDF = 0;
var pages = [];
var loadPDF = async function(pdfBlob, filename, pdfIndex) {
let url = await URL.createObjectURL(pdfBlob);
@ -29,15 +30,12 @@ var loadPDF = async function(pdfBlob, filename, pdfIndex) {
loadingTask.promise.then(function(pdf) {
for(var pageNumber = 1; pageNumber <= pdf.numPages; pageNumber++ ) {
pdf.getPage(pageNumber).then(function(page) {
let viewport = page.getViewport({scale: 1});
let scale = (document.getElementById('container-pages').clientWidth - (12*nbPagePerLine) - 12) / viewport.width / nbPagePerLine;
viewport = page.getViewport({scale: scale});
let pageIndex = pdfLetter + "_" + (page.pageNumber - 1);
pages[pageIndex] = page;
let pageIndex = page.pageNumber - 1;
document.getElementById('container-pages').insertAdjacentHTML('beforeend', '<div class="position-relative mt-0 ms-1 me-1 mb-0 d-inline-block canvas-container" id="canvas-container-' + pageIndex +'" draggable="true"><canvas class="shadow-sm canvas-pdf" style="border: 2px solid transparent;"></canvas><div class="position-absolute top-50 start-50 translate-middle p-2 ps-3 pe-3 rounded-circle container-resize btn-drag"><i class="bi bi-arrows-move"></i></div><div class="position-absolute top-50 end-0 translate-middle-y p-2 ps-3 pe-3 rounded-circle container-rotate btn-rotate"><i class="bi bi-arrow-clockwise"></i></div><div class="position-absolute text-center w-100 pt-1 container-checkbox pb-4" style="background: rgb(255,255,255,0.8); bottom: 7px; cursor: pointer;"><div class="form-switch"><input form="form_pdf" class="form-check-input checkbox-page" role="switch" type="checkbox" checked="checked" style="cursor: pointer;" value="'+pdfLetter+page.pageNumber+'" /></div></div><p class="position-absolute text-center w-100 ps-2 pe-2 pb-0 mb-1 opacity-75" style="bottom: 7px; font-size: 10px; text-overflow: ellipsis; white-space: nowrap; overflow: hidden;">Page '+page.pageNumber+' - '+filename+'</p><input type="hidden" value="0" id="input_rotate_'+pageIndex+'" /></div>');
document.getElementById('container-pages').insertAdjacentHTML('beforeend', '<div class="position-relative mt-0 ms-1 me-1 mb-0 d-inline-block canvas-container" id="canvas-container-' + pdfIndex + "_" + pageIndex +'" draggable="true"><canvas class="shadow-sm canvas-pdf" style="border: 2px solid transparent;"></canvas><div class="position-absolute top-50 start-50 translate-middle p-2 ps-3 pe-3 rounded-circle container-resize btn-drag"><i class="bi bi-arrows-move"></i></div><div class="position-absolute text-center w-100 pt-1 container-checkbox pb-4" style="background: rgb(255,255,255,0.8); bottom: 7px; cursor: pointer;"><div class="form-switch"><input form="form_pdf" class="form-check-input checkbox-page" role="switch" type="checkbox" checked="checked" style="cursor: pointer;" value="'+pdfLetter+page.pageNumber+'" /></div></div><p class="position-absolute text-center w-100 ps-2 pe-2 pb-0 mb-1 opacity-75" style="bottom: 7px; font-size: 10px; text-overflow: ellipsis; white-space: nowrap; overflow: hidden;">Page '+page.pageNumber+' - '+filename+'</p></div>');
let canvasContainer = document.getElementById('canvas-container-' + pdfIndex + "_" + pageIndex);
let canvasContainer = document.getElementById('canvas-container-' + pageIndex);
canvasContainer.addEventListener('dragstart', function(e) {
this.querySelector('.container-checkbox').classList.add('d-none');
this.querySelector('.container-resize').classList.add('d-none');
@ -76,26 +74,18 @@ var loadPDF = async function(pdfBlob, filename, pdfIndex) {
stateCheckbox(this);
stateCheckboxAll();
});
canvasContainer.addEventListener('click', function(e) {
canvasContainer.querySelector('.container-checkbox').addEventListener('click', function(e) {
let checkbox = this.querySelector('input[type=checkbox]');
checkbox.checked = !checkbox.checked;
stateCheckbox(checkbox);
stateCheckboxAll();
});
canvasContainer.querySelector('.btn-rotate').addEventListener('click', function(e) {
console.log(document.querySelector('#input_rotate_'+pageIndex));
pageRender(pageIndex, parseInt(document.querySelector('#input_rotate_'+pageIndex).value) + 90);
})
var canvasPDF = canvasContainer.querySelector('.canvas-pdf');
// Prepare canvas using PDF page dimensions
var context = canvasPDF.getContext('2d');
canvasPDF.height = viewport.height;
canvasPDF.width = viewport.width;
var renderContext = {
canvasContext: context,
viewport: viewport,
enhanceTextSelection: true
};
page.render(renderContext);
pageRender(pageIndex);
});
}
}, function (reason) {
@ -103,6 +93,25 @@ var loadPDF = async function(pdfBlob, filename, pdfIndex) {
});
};
var pageRender = function(pageIndex, rotation = 0) {
let page = pages[pageIndex];
let viewport = page.getViewport({scale: 1, rotation: rotation});
let scale = (document.getElementById('container-pages').clientWidth - (12*nbPagePerLine) - 12) / viewport.width / nbPagePerLine;
viewport = page.getViewport({scale: scale, rotation: rotation});
let canvasContainer = document.getElementById('canvas-container-' + pageIndex);
let canvasPDF = canvasContainer.querySelector('.canvas-pdf');
let context = canvasPDF.getContext('2d');
document.querySelector('#input_rotate_'+pageIndex).value = rotation;
canvasPDF.height = viewport.height;
canvasPDF.width = viewport.width;
page.render({
canvasContext: context,
viewport: viewport,
enhanceTextSelection: true
});
}
var stateCheckbox = function(checkbox) {
let checkboxContainer = checkbox.parentNode.parentNode.parentNode;