CSS Bootstrap Carousel - 如何在幻灯片之间缓慢淡入淡出
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原文地址: http://stackoverflow.com/questions/29169823/
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Bootstrap Carousel - how to fade between slides slowly
提问by Alex
I'm using the latest Bootstrap Carousel and need to fade slowly (about 5s) between slides. I've looked at a number of examples, and have tried to implement this one. The problem is that the fade between slides is too quick (less than a second). How do I change that to a longer fade?
我正在使用最新的 Bootstrap Carousel，需要在幻灯片之间缓慢淡入淡出（大约 5 秒）。我已经看了一些例子，并试图实现这个一个。问题是幻灯片之间的淡入淡出太快（不到一秒）。我如何将其更改为更长的淡入淡出？
Here's my code:
这是我的代码：
<div class="carousel slide" id="slideshow-carousel-1" data-ride="carousel">
<div class="carousel-inner" role="listbox">
<!-- Slide 1 -->
<div class="item item-1 slide-image active">
<img class="img-responsive bg-item parallax" data-speed="1" data-width="1980" data-height="1485" src="~/images/slideshow/bottle1.png" alt="Slide 1 Background">
<div class="carousel-caption">
<h1 class="title">Caption 1</h1>
</div>
</div>
<!-- End Slide 1 -->
<!-- Slide 2 -->
<div class="item item-2 slide-image">
<img class="img-responsive bg-item parallax" data-speed="1" data-width="1980" data-height="1485" src="~/images/slideshow/bottle2.jpg" alt="Slide 2 Background">
<div class="carousel-caption">
<h1 class="title">Or Bottle!</h1>
</div>
</div>
<!-- End Slide 2 -->
</div>
</div>
Here's the CSS:
这是CSS：
.carousel-inner > .item {
opacity: 0;
top: 0;
left: 0;
width: 100%;
display: block;
position: absolute;
z-index: 0;
-webkit-transition: opacity 5s ease;
-o-transition: opacity 5s ease;
transition: opacity 5s ease;
-webkit-transform: translate3d(0, 0, 0) !important;
transform: translate3d(0, 0, 0) !important;
}
.carousel-inner > .item:first-of-type {
position: relative;
}
.carousel-inner > .active {
opacity: 1;
z-index: 3;
}
.carousel-inner > .next.left,
.carousel-inner > .prev.right {
-webkit-transition: opacity 0.6s ease-in-out;
-o-transition: opacity 0.6s ease-in-out;
transition: opacity 0.6s ease-in-out;
opacity: 1;
left: 0;
z-index: 2;
}
.carousel-inner > .active.left,
.carousel-inner > .active.right {
z-index: 1;
}
.carousel-control {
z-index: 4;
}
回答by Alex
The solution was non-trivial, as my late, great computer science professor used to say. The Slick Carousel(a derivative of the Bootstrap Carousel) uses class="sld-transition-2"(one of three available classes) on the body tag to set the carousel's transition. This was colliding with the fade transition I was trying to set. So it was removed.
正如我已故的伟大的计算机科学教授曾经说过的那样，解决方案非常重要。的油滑旋转木马（衍生物的引导轮播的）的用途class="sld-transition-2"在主体标签（三个可用类之一）来设定转盘的过渡。这与我试图设置的淡入淡出过渡相冲突。所以它被删除了。
The CSS3 solution provided herefrom this Stackoverflow answerby @transportedman was the clincher. I made some modifications to it for our requirements and placed it in the last CSS file to be loaded for the site (to override everything that came before it):
所提供的解决方案CSS3这里从这个＃1的答案由@transportedman是硬道理。我根据我们的要求对其进行了一些修改，并将其放在要为站点加载的最后一个 CSS 文件中（以覆盖它之前的所有内容）：
/*
inspired from http://codepen.io/Rowno/pen/Afykb
https://stackoverflow.com/questions/26770055/bootstrap-carousel-fade-no-longer-working-with-maxcdn-3-3-bootstrap-min-css
*/
.carousel-fade .carousel-inner .item {
opacity: 0;
transition-property: opacity;
transition-duration: 4s;
transition-timing-function:linear;
}
.carousel-fade .carousel-inner .active {
opacity: 1;
}
.carousel-fade .carousel-inner .active.left,
.carousel-fade .carousel-inner .active.right {
left: 0;
opacity: 0;
z-index: 1;
}
.carousel-fade .carousel-inner .next.left,
.carousel-fade .carousel-inner .prev.right {
opacity: 1;
}
.carousel-fade .carousel-control {
z-index: 2;
}
/*
WHAT IS NEW IN 3.3: "Added transforms to improve carousel performance in modern browsers."
now override the 3.3 new styles for modern browsers & apply opacity
*/
@media all and (transform-3d), (-webkit-transform-3d) {
.carousel-fade .carousel-inner > .item.next,
.carousel-fade .carousel-inner > .item.active.right {
opacity: 0;
-webkit-transform: translate3d(0, 0, 0);
transform: translate3d(0, 0, 0);
}
.carousel-fade .carousel-inner > .item.prev,
.carousel-fade .carousel-inner > .item.active.left {
opacity: 0;
-webkit-transform: translate3d(0, 0, 0);
transform: translate3d(0, 0, 0);
}
.carousel-fade .carousel-inner > .item.next.left,
.carousel-fade .carousel-inner > .item.prev.right,
.carousel-fade .carousel-inner > .item.active {
opacity: 1;
-webkit-transform: translate3d(0, 0, 0);
transform: translate3d(0, 0, 0);
}
}
Last but not least, modified the carousel DIV tag to have the data-intervalattribute, which is bigger than the transition-durationset in the above CSS3:
最后但并非最不重要的是，修改了 carousel DIV 标签，使其具有data-interval比transition-duration上述 CSS3 中的集合更大的属性：
<div class="carousel slide carousel-fade" id="slideshow-carousel-1" data-ride="carousel" data-interval="7000">
.....
</div>
Hope this helps others who run into similar issues.
希望这可以帮助遇到类似问题的其他人。
回答by fubbe
Since the link provided by @Turbojohan does not work anymore. The below code from the deprecated link. Just exchange slide class attribute with fade.
由于@Turbojohan 提供的链接不再有效。以下代码来自已弃用的链接。只需用淡入淡出交换幻灯片类属性。
.carousel.fade {
opacity: 1;
}
.carousel.fade .item {
transition: opacity ease-out .7s;
left: 0;
opacity: 0; /* hide all slides */
top: 0;
position: absolute;
width: 100%;
display: block;
}
.carousel.fade .item:first-child {
top: auto;
opacity: 1; /* show first slide */
position: relative;
}
.carousel.fade .item.active {
opacity: 1;
}
回答by Spencodromix
In the first line just remove slideclass:
在第一行中删除slide类：
<div class="carousel" id="slideshow-carousel-1" data-ride="carousel">
<div class="carousel" id="slideshow-carousel-1" data-ride="carousel">
In css add:
在css中添加：
.carousel .slide-image.active {
opacity: 1;
transition: opacity 1s ease-in;
}
.carousel .slide-image {
opacity: 0;
display: block;
left: 0;
transition: opacity 1s ease-out;
}
