android - 启用 :hover effect on a touch screen environment

Question

首先，这就是我要说的:jsfiddle .

当鼠标悬停在图片上时，您可以看到 4 个图标出现，同时图片被放大，.my-caption 的背景变暗。我已经在移动设备上对此进行了测试，但效果不如台式机。当我点击图像时，会在出现悬停效果的同时访问图标下方的链接。我也想让它在触摸屏设备(Android 和 iOS)上变得友好。

我的目标:

1. 当用户点击图片时，悬停效果会被激活(图标显示、图片缩放和背景变暗)。如果用户再次点击图像或点击图像外的其他地方，悬停效果将被停用(恢复到正常状态)。
2. 只有当用户点击图标(二次点击)时才能访问图标下方的链接。

如何使用 CSS 或简单的 JS 实现此目的？感谢您的帮助。

附言。我必须归功于Mary Lou用于这种令人敬畏的悬停效果。

Answer 1

试试这个:

HTML:

<section class="my-work-area">
  <div class="my-item">
    <img src="http://i.imgur.com/PAj4Ky9.jpg">
    <div class="my-caption text-center">
      <figure class="effect-hera">
        <figcaption>
          <p>
            <a href="http://www.google.com" target="_blank"><i class="fa fa-moon-o"></i></a>
            <a href="http://www.yahoo.com" target="_blank"><i class="fa fa-smile-o"></i></a>
            <a href="http://www.apple.com" target="_blank"><i class="fa fa-star-o"></i></a>
            <a href="http://www.microsoft.com" target="_blank"><i class="fa fa-sun-o"></i></a>
          </p>
        </figcaption>
      </figure>
    </div>
  </div>
</section>

CSS:

.my-work-area {
  width: 100%;
  max-width: 420px;
  height: auto;
}

.my-item {
  overflow: hidden;
  position: relative;
}

.my-item img {
  width: 100%;
  -webkit-transition: all 0.5s ease-in-out;
  transition: all 0.5s ease-in-out;
}

.my-item.active img,
.my-item.active img {
  -webkit-transform: scale(1.2);
  transform: scale(1.2);
}

.my-item.active .my-caption {
  background: rgba(0, 0, 0, 0.75);
  visibility: visible;
}

.my-item .my-caption {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  -webkit-transition: all 0.25s ease-in-out 0s;
  transition: all 0.25s ease-in-out 0s;
  visibility: hidden;
}

.my-item .my-caption figure {
    position: relative;
    float: left;
    overflow: hidden;
    width: 100%;
    height: 100%;
}

.my-item .my-caption figure figcaption {
    padding: 2em;
    font-size: 3em;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

.my-item .my-caption figure figcaption::before,
.my-item .my-caption figure figcaption::after {
    pointer-events: none;
}

.my-item .my-caption figure figcaption,
.my-item .my-caption figure figcaption > a {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.my-item .my-caption figure figcaption > a {
    z-index: 1000;
    text-indent: 200%;
    white-space: nowrap;
    font-size: 0;
    opacity: 0;
}

.my-item .my-caption figure p {
    margin: 0;
    letter-spacing: 2px;
    font-size: 60%;
}

figure.effect-hera {
    background: transparent;
}

figure.effect-hera p {
    position: absolute;
    top: 50%;
    left: 50%;
    -webkit-transition: opacity 0.35s, transform 0.35s;
    transition: opacity 0.35s, transform 0.35s;
    -webkit-transform: translate3d(-50%,-50%,0);
    transform: translate3d(-50%,-50%,0);
    -webkit-transform-origin: 50%;
    transform-origin: 50%;
}

figure.effect-hera figcaption::before {
    position: absolute;
    top: 50%;
    left: 50%;
    content: '';
    opacity: 0;
    -webkit-transition: opacity 0.35s, transform 0.35s;
    transition: opacity 0.35s, transform 0.35s;
    -webkit-transform: translate3d(-50%,-50%,0) rotate3d(0,0,1,-45deg) scale3d(0,0,1);
    transform: translate3d(-50%,-50%,0) rotate3d(0,0,1,-45deg) scale3d(0,0,1);
    -webkit-transform-origin: 50%;
    transform-origin: 50%;
}

figure.effect-hera p {
    width: 100px;
    text-transform: none;
    line-height: 1.8;
}

figure.effect-hera p a {
    color: linen;
}

figure.effect-hera p a:hover {
    color: gold;
}

figure.effect-hera p a i {
    font-size: 1.2em;
}

figure.effect-hera p a i {
    opacity: 0;
    -webkit-transition: opacity 0.35s, transform 0.35s;
    transition: opacity 0.35s, transform 0.35s;
}

figure.effect-hera p a:first-child i {
    -webkit-transform: translate3d(-60px,-60px,0);
    transform: translate3d(-60px,-60px,0);
}

figure.effect-hera p a:nth-child(2) i {
    -webkit-transform: translate3d(60px,-60px,0);
    transform: translate3d(60px,-60px,0);
}

figure.effect-hera p a:nth-child(3) i {
    -webkit-transform: translate3d(-60px,60px,0);
    transform: translate3d(-60px,60px,0);
}

figure.effect-hera p a:nth-child(4) i {
    -webkit-transform: translate3d(60px,60px,0);
    transform: translate3d(60px,60px,0);
}

.my-item.active figure.effect-hera figcaption::before {
    opacity: 1;
    -webkit-transform: translate3d(-50%,-50%,0) rotate3d(0,0,1,-45deg) scale3d(1,1,1);
    transform: translate3d(-50%,-50%,0) rotate3d(0,0,1,-45deg) scale3d(1,1,1);
}

.my-item.active figure.effect-hera p i:empty {
    -webkit-transform: translate3d(0,0,0);
    transform: translate3d(0,0,0);
    opacity: 1;
}

jQuery:

$('.my-item').on('click', function() {
    $('.my-item').removeClass('active');
    $(this).addClass('active');
});

$(document).on("click", function(e) {
    if (!($(e.target).is('.my-item') || $($(e.target).parents('.my-item')).is('.my-item'))){
    $('.my-item').removeClass('active');
  }
});

演示:https://jsfiddle.net/gwuuzmah/5/