+++ /dev/null
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-http://creativecommons.org/licenses/by-nc-sa/2.0/uk/
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- Information
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- * Non-Commercial — You may not use this work for commercial
- purposes.
- * Share Alike — If you alter, transform, or build upon this
- work, you may distribute the resulting work only under a
- licence identical to this one.
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-With the understanding that:
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- * Waiver — Any of the above conditions can be waived if you get
- permission from the copyright holder.
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+++ /dev/null
-/**
- * author Christopher Blum
- * - based on the idea of Remy Sharp, http://remysharp.com/2009/01/26/element-in-view-event-plugin/
- * - forked from http://github.com/zuk/jquery.inview/
- */
-(function ($) {
- var inviewObjects = {}, viewportSize, viewportOffset,
- d = document, w = window, documentElement = d.documentElement, expando = $.expando, isFiring = false, $elements = {};
-
- $.event.special.inview = {
- add: function(data) {
- var inviewObject = { data: data, $element: $(this) }
- inviewObjects[data.guid + "-" + this[expando]] = inviewObject;
- var selector = inviewObject.data.selector,
- $element = inviewObject.$element;
- var hash = parseInt(getHash( data.guid + this[expando]));
- $elements[hash] = selector ? $element.find(selector) : $element;
- },
-
- remove: function(data) {
- try { delete inviewObjects[data.guid + "-" + this[expando]]; } catch(e) {}
- try {
- var hash = parseInt(getHash(data.guid + this[expando]));
- delete($elements[hash]);
- } catch (e){}
- }
- };
-
-
- function getHash(str){
- str = str+'';
- var hash = 0;
- if (str.length == 0) return hash;
- for (i = 0; i < str.length; i++) {
- char = str.charCodeAt(i);
- hash = ((hash<<5)-hash)+char;
- hash = hash & hash; // Convert to 32bit integer
- }
- return Math.abs(hash);
- }
-
- function getViewportSize() {
- var mode, domObject, size = { height: w.innerHeight, width: w.innerWidth };
-
- // if this is correct then return it. iPad has compat Mode, so will
- // go into check clientHeight/clientWidth (which has the wrong value).
- if (!size.height) {
- mode = d.compatMode;
- if (mode || !$.support.boxModel) { // IE, Gecko
- domObject = mode === 'CSS1Compat' ?
- documentElement : // Standards
- d.body; // Quirks
- size = {
- height: domObject.clientHeight,
- width: domObject.clientWidth
- };
- }
- }
-
- return size;
- }
-
- function getViewportOffset() {
- return {
- top: w.pageYOffset || documentElement.scrollTop || (d.body?d.body.scrollTop:0),
- left: w.pageXOffset || documentElement.scrollLeft || (d.body?d.body.scrollLeft:0)
- };
- }
-
- function checkInView() {
- if (isFiring){
- return;
- }
- isFiring = true;
- viewportSize = viewportSize || getViewportSize();
- viewportOffset = viewportOffset || getViewportOffset();
-
- for (var i in $elements) {
- if (isNaN(parseInt(i))) {
- continue;
- }
-
- var $element = $($elements[i]),
- elementSize = { height: $element.height(), width: $element.width() },
- elementOffset = $element.offset(),
- inView = $element.data('inview'),
- visiblePartX,
- visiblePartY,
- visiblePartsMerged;
-
- // Don't ask me why because I haven't figured out yet:
- // viewportOffset and viewportSize are sometimes suddenly null in Firefox 5.
- // Even though it sounds weird:
- // It seems that the execution of this function is interferred by the onresize/onscroll event
- // where viewportOffset and viewportSize are unset
- if (!viewportOffset || !viewportSize) {
- isFiring = false;
- return;
- }
-
- if (elementOffset.top + elementSize.height > viewportOffset.top &&
- elementOffset.top < viewportOffset.top + viewportSize.height &&
- elementOffset.left + elementSize.width > viewportOffset.left &&
- elementOffset.left < viewportOffset.left + viewportSize.width) {
- visiblePartX = (viewportOffset.left > elementOffset.left ?
- 'right' : (viewportOffset.left + viewportSize.width) < (elementOffset.left + elementSize.width) ?
- 'left' : 'both');
- visiblePartY = (viewportOffset.top > elementOffset.top ?
- 'bottom' : (viewportOffset.top + viewportSize.height) < (elementOffset.top + elementSize.height) ?
- 'top' : 'both');
- visiblePartsMerged = visiblePartX + "-" + visiblePartY;
- if (!inView || inView !== visiblePartsMerged) {
- $element.data('inview', visiblePartsMerged).trigger('inview', [true, visiblePartX, visiblePartY]);
- }
- } else if (inView) {
- $element.data('inview', false).trigger('inview', [false]);
- }
- }
- isFiring = false;
- }
-
- $(w).bind("scroll resize", function() {
- viewportSize = viewportOffset = null;
- });
-
- // Use setInterval in order to also make sure this captures elements within
- // "overflow:scroll" elements or elements that appeared in the dom tree due to
- // dom manipulation and reflow
- // old: $(window).scroll(checkInView);
- //
- // By the way, iOS (iPad, iPhone, ...) seems to not execute, or at least delays
- // intervals while the user scrolls. Therefore the inview event might fire a bit late there
- setInterval(checkInView, 250);
-})(jQuery);
projects / nextcloud-server.git / commitdiff