我正在制作一个脚本,根据光标位置左右变换调整图像 还有一些CSS可以在悬停时缩放图像。
// JavaScript source code
var catchX = 0,
catchY = 0,
x = 0,
y = 0,
burn = 1 / 28;
function imageWatch() {
x += (catchX - x) * burn;
translate = 'translate(' + x + 'px, ' + y + 'px)';
$('.image-area img').css({
'-webit-transform': translate,
'-moz-transform': translate,
'transform': translate
});
window.requestAnimationFrame(imageWatch);
}
$(window).on('mousemove click', function (e) {
var mouseX = Math.max(-100, Math.min(100, $(window).width() / 2 - e.clientX));
catchX = (26 * mouseX) / 100;
});
imageWatch();
html,body { height:100%}
body {margin: 0; padding: 0;}
*, *::before, *::after {
content:"\0020";
box-sizing: border-box;
}
.poster {
display: inline-block;
width: 32vw;
height: 100vh;
position:relative;
overflow:hidden !important
}
.image-area {
position: absolute;
width: 100%;
height: 100vh;
opacity: .24;
transition: 2.5s ease;
}
.image-area {
opacity: 1;
}
.image-area > img {
margin-top: -312px;
margin-left: -913px;
width: auto;
/* height: auto */
height: 1000px;
transform: scale(1,1);
transition:8s all;
}
.poster:hover .image-area > img {
transform: scale(1.3,1.3)
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="poster">
<div class="image-area">
<img class="poster" src="https://vignette1.wikia.nocookie.net/logopedia/images/f/fc/Sky_Believe_in_better_logo.jpg/revision/latest?cb=20110910152552" alt="Sky" />
</div>
</div>
<div class="poster">
<div class="image-area">
<img class="poster" src="https://vignette1.wikia.nocookie.net/logopedia/images/f/fc/Sky_Believe_in_better_logo.jpg/revision/latest?cb=20110910152552" alt="Sky" />
</div>
</div>
<div class="poster">
<div class="image-area">
<img class="poster" src="https://vignette1.wikia.nocookie.net/logopedia/images/f/fc/Sky_Believe_in_better_logo.jpg/revision/latest?cb=20110910152552" alt="Sky" />
</div>
</div>
我的JS正在使用transform属性,我的CSS也是如此,可以让它在悬停时放大。我认为这是问题所在。
如果你从CSS中删除了转换,那么脚本运行正常,但我需要transition:8s all
让图像放大悬停,以及将其与光标对齐。
这S.O告诉我你可以有两个转换属性,但它们必须在一行上。我如何用我的Javascript做到这一点?
答案 0 :(得分:5)
transform
是一个属性,因此您无法仅针对其中的一部分来定位CSS,例如,您无法为应用于其中的两个transform-functions设置不同的CSS transition-duration
相同的transform
属性。
您可以通过js编写所有内容,随着时间的推移自行更新转换函数值,但这可能需要大量工作,因为可能存在非硬件加速结果,而且有一个简单的解决方法。
最简单的解决方案是更改一点结构,以便在包装器元素上应用scale
,在内部元素上应用转换。
这样,两种变换都应用于内部<img>
,但它们不会相互冲突。
// JavaScript source code
var catchX = 0,
catchY = 0,
x = 0,
y = 0,
burn = 1 / 28;
function imageWatch() {
x += (catchX - x) * burn;
translate = 'translate(' + x + 'px, ' + y + 'px)';
$('.image-area img').css({
'-webit-transform': translate,
'-moz-transform': translate,
'transform': translate
});
window.requestAnimationFrame(imageWatch);
}
$(window).on('mousemove click', function(e) {
var mouseX = Math.max(-100, Math.min(100, $(window).width() / 2 - e.clientX));
catchX = (26 * mouseX) / 100;
});
imageWatch();
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html,
body {
height: 100%
}
body {
margin: 0;
padding: 0;
}
*,
*::before,
*::after {
content: "\0020";
box-sizing: border-box;
}
.poster {
display: inline-block;
width: 32vw;
height: 100vh;
position: relative;
overflow: hidden !important
}
.image-area {
position: absolute;
width: 100%;
height: 100vh;
opacity: .24;
transition: 2.5s ease;
}
.image-area {
opacity: 1;
}
.image-area img {
margin-top: -312px;
margin-left: -913px;
width: auto;
/* height: auto */
height: 1000px;
/* here we can remove the transition */
}
/* scaling on hover is only applied on the parent elmt */
.image-area>.scaler {
transform: scale(1, 1);
transition: 8s transform;
}
.poster:hover .image-area>.scaler {
transform: scale(1.3, 1.3);
}
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<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="poster">
<div class="image-area">
<!-- the scaling wrapper-->
<div class="scaler">
<img class="poster" src="https://vignette1.wikia.nocookie.net/logopedia/images/f/fc/Sky_Believe_in_better_logo.jpg/revision/latest?cb=20110910152552" alt="Sky" />
</div>
</div>
</div>
<div class="poster">
<div class="image-area">
<!-- the scaling wrapper-->
<div class="scaler">
<img class="poster" src="https://vignette1.wikia.nocookie.net/logopedia/images/f/fc/Sky_Believe_in_better_logo.jpg/revision/latest?cb=20110910152552" alt="Sky" />
</div>
</div>
</div>
<div class="poster">
<div class="image-area">
<!-- the scaling wrapper-->
<div class="scaler">
<img class="poster" src="https://vignette1.wikia.nocookie.net/logopedia/images/f/fc/Sky_Believe_in_better_logo.jpg/revision/latest?cb=20110910152552" alt="Sky" />
</div>
</div>
</div>
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