pandora/static/js/PDFViewer.js
2023-10-27 15:53:44 +02:00

99 lines
2.7 KiB
JavaScript

'use strict';
/*@
Ox.PDFViewer <f> PDF Viewer
options <o> Options
center <[n]|s|'auto'> Center ([x, y] or 'auto')
height <n|384> Viewer height in px
maxZoom <n|16> Maximum zoom (minimum zoom is 'fit')
pdfjsURL <s|'/static/pdf.js/'> URL to pdf.js
url <s|''> PDF URL
width <n|512> Viewer width in px
zoom <n|s|'fit'> Zoom (number or 'fit' or 'fill')
self <o> Shared private variable
([options[, self]]) -> <o:OxElement> PDF Viewer
center <!> Center changed
center <[n]|s> Center
zoom <!> Zoom changed
zoom <n|s> Zoom
page <!> Page changed
page <n|s> Page
@*/
Ox.PDFViewer = function(options, self) {
self = self || {};
var that = Ox.Element({}, self)
.defaults({
center: 'auto',
height: 384,
pdfjsURL: '/static/pdf.js/',
page: 1,
maxZoom: 16,
url: '',
width: 512,
zoom: 'fit'
})
.options(options || {})
.update({
center: function() {
setCenterAndZoom();
},
page: updatePage,
// allow for setting height and width at the same time
height: updateSize,
url: function() {
self.$iframe.postMessage('pdf', {pdf: self.options.url});
},
width: updateSize,
zoom: function() {
setCenterAndZoom();
}
})
.addClass('OxPDFViewer')
.on({
})
.bindEvent({
});
self.$iframe = Ox.Element('<iframe>')
.attr({
frameborder: 0,
height: self.options.height + 'px',
src: self.options.pdfjsURL + '?' + pandora.getVersion() + '&file=' + encodeURIComponent(self.options.url) + '#page=' + self.options.page,
width: self.options.width + 'px'
})
.onMessage(function(data, event) {
that.triggerEvent(event, data);
})
.appendTo(that);
updateSize();
function setCenterAndZoom() {
}
function updatePage() {
self.$iframe.postMessage('page', {page: self.options.page});
}
function updateSize() {
that.css({
height: self.options.height + 'px',
width: self.options.width + 'px',
});
self.$iframe.css({
height: self.options.height + 'px',
width: self.options.width + 'px',
});
}
/*@
postMessage <f> postMessage
(event, data) -> <o> post message to pdf.js
@*/
that.postMessage = function(event, data) {
self.$iframe.postMessage(event, data);
}
return that;
};