使用css3 transform-origin来居中和缩放

Question

使用css3 transform-origin来居中和缩放

我的页面上有一系列div.每个div都有一个背景图像,并以网格形式排列.我的页面上有一些div的div.页面被限制为使用的大小<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">

我希望能够点击div,让它缩放到特定的比例,并居中.

我的加价:

<body id="body">
    <div id="container" style="position: relative">
        <div id="pack1" class="screenItem cardPack"></div>
        <div id="pack2" class="screenItem cardPack"></div>
        <div id="pack3" class="screenItem cardPack"></div>
        <div id="pack4" class="screenItem cardPack"></div>
    </div>
</body>

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我的css:

#pack1{
    margin-left: 20px;
    margin-top: 20px;
    height: 193px;
    width: 127px;
    background-image: url(../images/image1.png);
    background-size: 100% 100%;
    float: left;
    clear: both;
    -webkit-transition: all 1s ease-in-out;
    -moz-transition: all 1s ease-in-out;
    -o-transition: all 1s ease-in-out;
    -ms-transition: all 1s ease-in-out;     
    transition: all 1s ease-in-out;
}

#pack2{
    margin-right: 20px;
    margin-top: 20px;
    height: 193px;
    width: 127px;
    background-image: url(../images/image2.png);
    background-size: 100% 100%;
    float: right;
    -webkit-transition: all 1s ease-in-out;
    -moz-transition: all 1s ease-in-out;
    -o-transition: all 1s ease-in-out;
    -ms-transition: all 1s ease-in-out;     
    transition: all 1s ease-in-out;
}

#pack3{
    margin-left: 20px;
    margin-top: 20px;
    height: 193px;
    width: 127px;
    background-image: url(../images/image3.png);
    background-size: 100% 100%;
    float: left;
    clear: both;
    -webkit-transition: all 1s ease-in-out;
    -moz-transition: all 1s ease-in-out;
    -o-transition: all 1s ease-in-out;
    -ms-transition: all 1s ease-in-out;     
    transition: all 1s ease-in-out;
}

#pack4{
    margin-right: 20px;
    margin-top: 20px;
    height: 193px;
    width: 127px;
    background-image: url(../images/comingSoon.png);
    background-size: 100% 100%;
    float: right;
    -webkit-transition: all 1s ease-in-out;
    -moz-transition: all 1s ease-in-out;
    -o-transition: all 1s ease-in-out;
    -ms-transition: all 1s ease-in-out;     
    transition: all 1s ease-in-out;
}
#body,
.ui-page {
background-image: url(../images/bg.png);
background-size: auto 100%;
background-repeat: repeat-x;
}

#container {
margin: auto;
width: 310px;
height: 568px;
}

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我有一个几乎有效的软糖:

$(cardPack).click(function() {
    var left = $(cardPack).position().left;
    var top = $(cardPack).position().top;
    $(cardPack).css("-webkit-transform", "scale(2.5,2.5)");
    $(cardPack).css("-webkit-transform-origin", (3*(left/4)) + " " + (3*(top/4)));
});

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但我认为这更像是巧合和运气.我的大脑无法工作,我可以在哪里设置,transform-origin以便图像最终位于屏幕的中心,无论其起点如何.

我很乐意考虑替代方案transform-origin来实现这一目标.

编辑:一个"不太像当地一样的表演"jsfiddle:http://jsfiddle.net/a7Cks/9/

Answer 1

dmi*_*i3y 6

只是为了好玩,因为我们正在谈论css3,有纯粹的css解决方案,使用target:选择器http://codepen.io/dmi3y/full/keAds,它从初始数据中被清理干净

HTML

  <div id="container">
    <a href="#pack1" id="pack1" class="screenItem cardPack"></a>
    <a href="#pack2" id="pack2" class="screenItem cardPack"></a>
    <a href="#pack3" id="pack3" class="screenItem cardPack"></a>
    <a href="#pack4" id="pack4" class="screenItem cardPack"></a>
  </div>

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减

#pack1{
    margin-left: 20px;
    margin-top: 20px;
    float: left;
    clear: both;

    &:target {
      top: 105px; left: 75px;
      margin-left: 0;
      margin-top: 0;
    }
}

#pack2{
    margin-right: 20px;
    margin-top: 20px;
    float: right;

    &:target {
      top: 105px; left: -75px;
      margin-right: 0;
      margin-top: 0;
    }
}

#pack3{
    margin-left: 20px;
    margin-top: 20px;
    float: left;
    clear: both;

    &:target {
      top: -105px; left: 75px;
      margin-left: 0;
      margin-top: 0;
    }
}

#pack4{
    margin-right: 20px;
    margin-top: 20px;
    float: right;

    &:target {
      top: -105px; left: -75px;
      margin-right: 0;
      margin-top: 0;
    }
}

#container {
  position: relative;
  margin: auto;
  width: 310px;
  height: 568px;
}

.screenItem {
  background: green;
  position: relative;
  height: 193px;
  width: 127px;
  -webkit-transition: all 1s ease-in-out;
  -moz-transition: all 1s ease-in-out;
  -o-transition: all 1s ease-in-out;
  -ms-transition: all 1s ease-in-out;     
  transition: all 1s ease-in-out;
}

:target {
  background: red;
  z-index: 100;
  padding: 10px; // + 20 px dimensions
}

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