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Scroll performance

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Fewer events, and ensure an event is fired after the end of the scroll.
https://github.com/FreshRSS/FreshRSS/pull/1309
This commit is contained in:
Alexandre Alapetite
2016-10-16 15:10:21 +02:00
parent ce14841cc0
commit eb88fee64b
1 changed files with 18 additions and 8 deletions
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26
p/scripts/main.js
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@@ -449,21 +449,31 @@ function auto_share(key) {
}
}
function scrollAsRead(box_to_follow) {
var minTop = 40 + (context.current_view === 'global' ? box_to_follow.offset().top : box_to_follow.scrollTop());
$('.not_read:visible').each(function () {
var $this = $(this);
if ($this.offset().top + $this.height() < minTop) {
mark_read($this, true);
}
});
}
function init_posts() {
var box_to_follow = context.current_view === 'global' ? $("#panel") : $(window);
if (context.auto_mark_scroll) {
var lastScroll = 0; //Throttle
var lastScroll = 0, //Throttle
timerId = 0;
box_to_follow.scroll(function () {
window.clearTimeout(timerId);
if (lastScroll + 500 < Date.now()) {
lastScroll = Date.now();
$('.not_read:visible').each(function () {
var $this = $(this),
minTop = (context.current_view === 'global') ? box_to_follow.offset().top : box_to_follow.scrollTop();
if ($this.offset().top + $this.height() < minTop + 40) {
mark_read($this, true);
}
});
scrollAsRead(box_to_follow);
} else {
timerId = window.setTimeout(function() {
scrollAsRead(box_to_follow);
}, 500);
}
});
}