24eme/signaturepdf
24eme/signaturepdf
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Code Issues Releases Wiki Activity

Zoom dans le PDF en mode desktop avec ctrl et la molette ou ctrl + -

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This commit is contained in:
Vincent LAURENT 2021-10-10 21:49:34 +02:00
parent df76224575
commit 33ddbb9e27
2 changed files with 93 additions and 17 deletions
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106
public/js/app.js
View File

@ -357,6 +357,25 @@ loadingTask.promise.then(function(pdf) {
activeCanvas.add(copiedObject).renderAll();
return;
}
if(event.ctrlKey && (event.key == 'à' || event.key == '0')) {
autoZoom();
event.preventDefault() && event.stopPropagation();
return;
}
if(event.ctrlKey && (event.key == '=' || event.key == '+')) {
zoomChange(1);
event.preventDefault() && event.stopPropagation();
return;
}
if(event.ctrlKey && event.key == '-') {
zoomChange(-1);
event.preventDefault() && event.stopPropagation();
return;
}
});
var addSvgInCanvas = function(canvas, item, x, y) {
@ -389,8 +408,10 @@ loadingTask.promise.then(function(pdf) {
});
}
var resizeTimeout;
var currentScale = 1.5;
var windowWidth = window.innerWidth;
window.addEventListener('resize', function(event) {
event.preventDefault() && event.stopPropagation();
if(windowWidth == window.innerWidth) {
return;
}
@ -404,24 +425,77 @@ loadingTask.promise.then(function(pdf) {
}
menu.classList.remove('d-md-block');
menu.classList.remove('d-none');
clearTimeout(resizeTimeout);
resizeTimeout = setTimeout(resizePDF, 250);
autoZoom();
});
var resizePDF = function () {
pdfPages.forEach(function(page, pageIndex) {
var renderTask = pdfRenderTasks[pageIndex];
if(!renderTask) {
clearTimeout(resizeTimeout);
resizeTimeout = setTimeout(resizePDF, 250);
document.addEventListener('wheel', function(event) {
if(!event.ctrlKey) {
return;
}
var scale = 1.5;
var viewport = page.getViewport({scale: scale});
if(viewport.width > document.getElementById('container-pages').clientWidth - 40) {
viewport = page.getViewport({scale: 1});
scale = (document.getElementById('container-pages').clientWidth - 40) / viewport.width;
viewport = page.getViewport({ scale: scale });
event.preventDefault() && event.stopPropagation();
if(event.deltaY > 0) {
zoomChange(-1)
} else {
zoomChange(1)
}
}, { passive: false });
var autoZoom = function() {
clearTimeout(resizeTimeout);
resizeTimeout = setTimeout(resizePDF, 100);
}
var zoomChange = function (inOrOut) {
if(resizeTimeout) {
return;
}
var deltaScale = 0.2 * inOrOut;
if(currentScale + deltaScale < 0) {
return
}
if(currentScale + deltaScale > 3) {
return
}
clearTimeout(resizeTimeout);
currentScale += deltaScale;
console.log(currentScale);
resizeTimeout = setTimeout(resizePDF(currentScale), 50);
}
var resizePDF = function (scale = 'auto') {
renderComplete = true;
pdfRenderTasks.forEach(function(renderTask) {
if(!renderTask) {
renderComplete = false;
}
});
if(!renderComplete) {
clearTimeout(resizeTimeout);
resizeTimeout = setTimeout(function(){ resizePDF(scale) }, 50);
return;
}
pdfPages.forEach(function(page, pageIndex) {
var renderTask = pdfRenderTasks[pageIndex];
if(scale == 'auto' && page.getViewport({scale: 1.5}).width > document.getElementById('container-pages').clientWidth - 40) {
scale = (document.getElementById('container-pages').clientWidth - 40) / page.getViewport({scale: 1}).width;
}
if(scale == 'auto') {
scale = 1.5;
}
var viewport = page.getViewport({scale: scale});
currentScale = scale;
var canvasPDF = document.getElementById('canvas-pdf-' + pageIndex);
var context = canvasPDF.getContext('2d');
canvasPDF.height = viewport.height;
@ -453,6 +527,8 @@ loadingTask.promise.then(function(pdf) {
renderTask = page.render(renderContext);
renderTask.promise.then(function () {
pdfRenderTasks[pageIndex] = renderTask;
clearTimeout(resizeTimeout);
resizeTimeout = null;
});
});
}
@ -470,7 +546,7 @@ loadingTask.promise.then(function(pdf) {
var pageIndex = page.pageNumber - 1;
document.getElementById('form_pdf').insertAdjacentHTML('beforeend', '<input name="svg[' + pageIndex + ']" id="data-svg-' + pageIndex + '" type="hidden" value="" />');
document.getElementById('container-pages').insertAdjacentHTML('beforeend', '<div class="position-relative mt-2 d-inline-block" id="canvas-container-' + pageIndex +'"><canvas id="canvas-pdf-'+pageIndex+'" class="shadow"></canvas><div class="position-absolute top-0 start-0"><canvas id="canvas-edition-'+pageIndex+'"></canvas></div></div>');
document.getElementById('container-pages').insertAdjacentHTML('beforeend', '<div class="position-relative mt-1 ms-1 me-1 d-inline-block" id="canvas-container-' + pageIndex +'"><canvas id="canvas-pdf-'+pageIndex+'" class="shadow-sm"></canvas><div class="position-absolute top-0 start-0"><canvas id="canvas-edition-'+pageIndex+'"></canvas></div></div>');
var canvasPDF = document.getElementById('canvas-pdf-' + pageIndex);
var canvasEditionHTML = document.getElementById('canvas-edition-' + pageIndex);

4
templates/pdf.html.php
View File

@ -27,11 +27,11 @@
<div class="container-fluid">
<div style="height: 65px;" class="d-md-none"></div>
<div class="row">
<div id="container-pages" class="col-xxl-9 col-xl-8 col-lg-7 col-md-6 col-sm-12 col-xs-12 text-center">
<div id="container-pages" style="overflow-x: auto" class="col-xxl-9 col-xl-8 col-lg-7 col-md-6 col-sm-12 col-xs-12 pt-1 pb-1 text-center">
</div>
</div>
<div style="height: 55px;" class="d-md-none"></div>
<div class="offcanvas offcanvas-end show d-none d-md-block" data-bs-backdrop="false" data-bs-scroll="true" data-keyboard="false" tabindex="-1" id="offcanvasTop" aria-labelledby="offcanvasTopLabel">
<div class="offcanvas offcanvas-end show d-none d-md-block shadow-sm" data-bs-backdrop="false" data-bs-scroll="true" data-keyboard="false" tabindex="-1" id="offcanvasTop" aria-labelledby="offcanvasTopLabel">
<div class="offcanvas-header">
<h5 id="offcanvasTopLabel">Signature du PDF</h5>
<button type="button" class="btn-close text-reset d-md-none" data-bs-dismiss="offcanvas" aria-label="Close"></button>