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31 lines
980 B
JavaScript
31 lines
980 B
JavaScript
// Copyright 2016 Documize Inc. <legal@documize.com>. All rights reserved.
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//
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// This software (Documize Community Edition) is licensed under
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// GNU AGPL v3 http://www.gnu.org/licenses/agpl-3.0.en.html
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//
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// You can operate outside the AGPL restrictions by purchasing
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// Documize Enterprise Edition and obtaining a commercial license
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// by contacting <sales@documize.com>.
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//
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// https://documize.com
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$.fn.inView = function(){
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let win = $(window);
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let obj = $(this);
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// trap for no object
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if (obj.length === 0) {
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return false;
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}
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// the top Scroll Position in the page
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let scrollPosition = win.scrollTop();
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// the end of the visible area in the page, starting from the scroll position
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let visibleArea = win.scrollTop() + win.height();
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// we check to see if the start of object is in view
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let objPos = obj.offset().top;// + obj.outerHeight();
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return(visibleArea >= objPos && scrollPosition <= objPos ? true : false);
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};
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