【问题标题】:Magnifying Glass (zoom) Cursor over image放大镜(缩放) 光标在图像上
【发布时间】:2012-10-21 17:44:05
【问题描述】:

我正在寻找将光标悬停在 Fancybox 图像上时将光标更改为放大镜的解决方案。

就像在 Pinterest 上一样,当您将图像悬停时(使用 chrome)。

到目前为止,我有这个没有跨浏览器支持。

.picture img {
    cursor:url(/img/layout/backgrounds/moz-zoom.gif), -moz-zoom-in;
}

有没有更好的方法来解决这个问题?

【问题讨论】:

标签: css fancybox mouse-cursor


【解决方案1】:

为此,您需要使用光标文件 .cur 而不是 .gif 文件,所以它会像

.picture img {
    cursor:url(/img/layout/backgrounds/zoom.cur), -moz-zoom-in;
}

【讨论】:

  • 澄清@Mr.Alien 的回答:似乎没有内置的跨浏览器“放大镜光标”,如css-tricks.com/almanac/properties/c/cursor 上所见-webkit-zoom-in 仅是webkit
  • 澄清更多:@Mr.Alien 使用绝对路径,因为 IE 不支持光标图像的相对路径。
【解决方案2】:

你可以使用:

.picture img{
    cursor: -moz-zoom-in; 
    cursor: -webkit-zoom-in; 
    cursor: zoom-in;
}

【讨论】:

  • 这适用于较新的FF...我喜欢这个光标:-moz-zoom-in;光标:-webkit-放大;光标:放大;
【解决方案3】:

根据caniuse.com,现在相关浏览器都支持cursor: zoom-in;,当然IE除外。 w3schools 的 IE 使用率下降到 6.1%...时钟的 IE 正在滴答作响!

.picture img{
   cursor: zoom-in;
}

【讨论】:

    【解决方案4】:

    我想出了一种方法让光标在图像上工作,但它从来没有作为光标工作

    <!DOCTYPE html>
    <html>
    <head>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <style>
    * {box-sizing: border-box;}
    
    .img-magnifier-container {
      position:relative;
    }
    
    .img-magnifier-glass {
      position: absolute;
      border: 3px solid #000;
      border-radius: 50%;
      cursor: none;
      /*Set the size of the magnifier glass:*/
      width: 100px;
      height: 100px;
    }
    </style>
    <script>
    function magnify(imgID, zoom) {
      var img, glass, w, h, bw;
      img = document.getElementById(imgID);
      /*create magnifier glass:*/
      glass = document.createElement("DIV");
      glass.setAttribute("class", "img-magnifier-glass");
      /*insert magnifier glass:*/
      img.parentElement.insertBefore(glass, img);
      /*set background properties for the magnifier glass:*/
      glass.style.backgroundImage = "url('" + img.src + "')";
      glass.style.backgroundRepeat = "no-repeat";
      glass.style.backgroundSize = (img.width * zoom) + "px " + (img.height * zoom) + "px";
      bw = 3;
      w = glass.offsetWidth / 2;
      h = glass.offsetHeight / 2;
      /*execute a function when someone moves the magnifier glass over the image:*/
      glass.addEventListener("mousemove", moveMagnifier);
      img.addEventListener("mousemove", moveMagnifier);
      /*and also for touch screens:*/
      glass.addEventListener("touchmove", moveMagnifier);
      img.addEventListener("touchmove", moveMagnifier);
      function moveMagnifier(e) {
        var pos, x, y;
        /*prevent any other actions that may occur when moving over the image*/
        e.preventDefault();
        /*get the cursor's x and y positions:*/
        pos = getCursorPos(e);
        x = pos.x;
        y = pos.y;
        /*prevent the magnifier glass from being positioned outside the image:*/
        if (x > img.width - (w / zoom)) {x = img.width - (w / zoom);}
        if (x < w / zoom) {x = w / zoom;}
        if (y > img.height - (h / zoom)) {y = img.height - (h / zoom);}
        if (y < h / zoom) {y = h / zoom;}
        /*set the position of the magnifier glass:*/
        glass.style.left = (x - w) + "px";
        glass.style.top = (y - h) + "px";
        /*display what the magnifier glass "sees":*/
        glass.style.backgroundPosition = "-" + ((x * zoom) - w + bw) + "px -" + ((y * zoom) - h + bw) + "px";
      }
      function getCursorPos(e) {
        var a, x = 0, y = 0;
        e = e || window.event;
        /*get the x and y positions of the image:*/
        a = img.getBoundingClientRect();
        /*calculate the cursor's x and y coordinates, relative to the image:*/
        x = e.pageX - a.left;
        y = e.pageY - a.top;
        /*consider any page scrolling:*/
        x = x - window.pageXOffset;
        y = y - window.pageYOffset;
        return {x : x, y : y};
      }
    }
    </script>
    </head>
    <body>
    
    <p>Mouse over the image:</p>
    
    <div class="img-magnifier-container">
      <img id="myimage" src="https://lh3.googleusercontent.com/C07Jx1HcnAiXyAZNsp0E7wXHGiA9E9Tr5oEPQT3VkU3WSCOIOOBBEL3Sk8sEk-MjFJx0fw=s163" width="600" height="400">
    </div>
    <script>
    /* Initiate Magnify Function
    with the id of the image, and the strength of the magnifier glass:*/
    magnify("myimage", 3);
    </script>
    
    </body>
    </html>

    【讨论】:

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