通过偏移数学居中在非 webkit 浏览器中不起作用
代码: http://jsfiddle.net/LPF85/6/
在 FF、IE7 和 IE9 中(我测试过的唯一不运行 WebKit 的浏览器),似乎 left 属性要么总是设置为 0
,要么在 IE 的情况下设置为负数。
我的定位代码完全基于文档的尺寸。
function open_img_in_face_box(id, width){
max_width = $j(document).width();
max_height = $j(document).height();
padding = 150;
passed_width = width || (max_width - (2 * padding));
var img = $j('#' + id);
dom_img = document.getElementById(id);
$j(document).bind('reveal.facebox', function() {
$j("#facebox .image img").width(passed_width);
})
// display
jQuery.facebox({
image: img.attr('src')
});
// center and adjust size
var aspect_ratio = img.width() / img.height();
var img_width = passed_width;
var img_height = passed_width / aspect_ratio;
window_center_y = max_height / 2;
window_center_x = max_width / 2;
offset_y = window_center_y - (img_height / 2);
offset_x = window_center_x - (img_width / 2);
var fbx = $j('#facebox');
fbx.css('position', 'absolute');
fbx.css('left', offset_x + 'px !important');
fbx.css('top', offset_y + 'px !important');
fbx.css('margin-left', 'auto');
fbx.css('margin-right', 'auto');
}
margin-left
和 margin-right
在这里似乎没有做任何事情,我对此很满意,因为左边的数学应该适用于所有浏览器,对吗? (这只是数学)
facebox / lightbox 的目标是水平和垂直居中。
The code: http://jsfiddle.net/LPF85/6/
In FF, IE7, and IE9 (the only browsers I've tested that don't run WebKit), it seems that the left attribute is either always set to 0
, or, in IE's case, negative.
My positioning code is all based off the dimensions of the document.
function open_img_in_face_box(id, width){
max_width = $j(document).width();
max_height = $j(document).height();
padding = 150;
passed_width = width || (max_width - (2 * padding));
var img = $j('#' + id);
dom_img = document.getElementById(id);
$j(document).bind('reveal.facebox', function() {
$j("#facebox .image img").width(passed_width);
})
// display
jQuery.facebox({
image: img.attr('src')
});
// center and adjust size
var aspect_ratio = img.width() / img.height();
var img_width = passed_width;
var img_height = passed_width / aspect_ratio;
window_center_y = max_height / 2;
window_center_x = max_width / 2;
offset_y = window_center_y - (img_height / 2);
offset_x = window_center_x - (img_width / 2);
var fbx = $j('#facebox');
fbx.css('position', 'absolute');
fbx.css('left', offset_x + 'px !important');
fbx.css('top', offset_y + 'px !important');
fbx.css('margin-left', 'auto');
fbx.css('margin-right', 'auto');
}
margin-left
and margin-right
don't appear to do anything here, which I'm fine with, because the left math should work across all browsers, right? (It is just math)
The goal of the facebox / lightbox, is to be centered both horizontally and vertically.
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为什么你首先要以编程方式计算位置?如果用户调整页面大小怎么办?这可以通过纯 CSS 轻松完成。
我不太明白你的 jsFiddle (或者我没有看到同样的事情?)所以我只会给你这个脚本: http://jsfiddle.net/minitech/8U4Ke/ 可以根据需要进行修改。它被注释。 ;)
现在可以轻松隐藏和显示 - 隐藏、淡出
.overlay
。要显示,请淡入。要更改内容,请替换.popup
中的 HTML。随意添加关闭框之类的东西。Why would you even programatically calculate the position in the first place? What if the user resizes the page? This can easily be done in pure CSS.
I don't really understand your jsFiddle (or am I not seeing the same thing?) so I'll just give you this script: http://jsfiddle.net/minitech/8U4Ke/ that can be modified however you like. It's commented. ;)
Now it's easy to hide and show - to hide, fade out
.overlay
. To show, fade it in. To change the contents, replace the HTML in.popup
. Add close boxes and whatnot liberally.