overleaf/services/web/public/js/libs/pdfListView/AnnotationsLayerBuilder.js

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JavaScript
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2014-02-12 10:23:40 +00:00
(function (name, context, definition) {
if (typeof module != 'undefined' && module.exports) module.exports = definition()
else if (typeof define == 'function' && define.amd) define(definition)
else context[name] = definition()
})('AnnotationsLayerBuilder', this, function (name, context) {
function AnnotationsLayerBuilder(pageView, annotationsLayerDiv) {
this.annotationsLayerDiv = annotationsLayerDiv;
this.pageView = pageView;
};
AnnotationsLayerBuilder.EXTERNAL_LINK_TARGET = "_blank";
AnnotationsLayerBuilder.prototype = {
setAnnotations: function(annotations) {
for (var i = 0; i < annotations.length; i++) {
var annotation = annotations[i];
switch (annotation.subtype) {
case 'Link':
this.addLink(annotation);
break;
case 'Text':
// TODO
break;
}
}
},
addLink: function(link) {
var element = this.buildLinkElementFromRect(link.rect);
this.setLinkTarget(element, link);
this.annotationsLayerDiv.appendChild(element);
},
buildLinkElementFromRect: function(rect) {
rect = this.pageView.viewport.convertToViewportRectangle(rect);
rect = PDFJS.Util.normalizeRect(rect);
var element = document.createElement("a");
element.style.left = Math.floor(rect[0]) + 'px';
element.style.top = Math.floor(rect[1]) + 'px';
element.style.width = Math.ceil(rect[2] - rect[0]) + 'px';
element.style.height = Math.ceil(rect[3] - rect[1]) + 'px';
return element;
},
setLinkTarget: function(element, link) {
if (link.url) {
element.href = link.url;
element.target = this.EXTERNAL_LINK_TARGET;
} else if (link.dest) {
element.href = "#" + link.dest;
var listView = this.pageView.listView;
element.onclick = function(e) {
e.preventDefault()
listView.navigateTo(link.dest);
}
// TODO
}
}
}
return AnnotationsLayerBuilder;
});