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tt-rss/lib/position.js

32 lines
995 B
JavaScript

/* http://textsnippets.com/posts/show/835 */
Position.GetWindowSize = function(w) {
w = w ? w : window;
var width = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
var height = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
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return [width, height];
};
/* http://textsnippets.com/posts/show/836 */
Position.Center = function(element, parent) {
var w, h, pw, ph;
var d = Element.getDimensions(element);
w = d.width;
h = d.height;
Position.prepare();
if (!parent) {
var ws = Position.GetWindowSize();
pw = ws[0];
ph = ws[1];
} else {
pw = parent.offsetWidth;
ph = parent.offsetHeight;
}
element.style.top = (ph/2) - (h/2) - Position.deltaY + "px";
element.style.left = (pw/2) - (w/2) - Position.deltaX + "px";
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};