Sakurai/pdf.js
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Implements mouse wheel behaviour for non-Firefox browsers

Browse Source
This commit is contained in:
Tim van der Meij 2014-01-28 20:52:25 +01:00
parent c45c9a7ffa
commit b4b145507c
1 changed files with 12 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
web/viewer.js
View File

@ -2049,19 +2049,22 @@ window.addEventListener('pagechange', function pagechange(evt) {
document.getElementById('next').disabled = (page >= PDFView.pages.length);
}, true);
// Firefox specific event, so that we can prevent browser from zooming
window.addEventListener('DOMMouseScroll', function(evt) {
if (evt.ctrlKey) {
evt.preventDefault();
function handleMouseWheel(evt) {
var MOUSE_WHEEL_DELTA_FACTOR = 40;
var ticks = (evt.type === 'DOMMouseScroll') ? -evt.detail :
evt.wheelDelta / MOUSE_WHEEL_DELTA_FACTOR;
var direction = (ticks < 0) ? 'zoomOut' : 'zoomIn';
var ticks = evt.detail;
var direction = (ticks > 0) ? 'zoomOut' : 'zoomIn';
if (evt.ctrlKey) { // Only zoom the pages, not the entire viewer
evt.preventDefault();
PDFView[direction](Math.abs(ticks));
} else if (PresentationMode.active) {
var FIREFOX_DELTA_FACTOR = -40;
PDFView.mouseScroll(evt.detail * FIREFOX_DELTA_FACTOR);
PDFView.mouseScroll(ticks * MOUSE_WHEEL_DELTA_FACTOR);
}
}, false);
}
window.addEventListener('DOMMouseScroll', handleMouseWheel);
window.addEventListener('mousewheel', handleMouseWheel);
window.addEventListener('click', function click(evt) {
if (!PresentationMode.active) {