CSS:将鼠标悬停在SVG组区域上，而不是渲染的像素，指针事件:边界框在跨浏览器上不起作用.解决方法 [英] CSS :hover on SVG group area instead of rendered pixels, pointer-events: bounding-box not working cross browser. How to workaround

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问题描述

我正在处理一些CSS动画的动画SVG，这些动画会在悬停时触发. 我可以将SVG动画化为我想要的用于Chrome的方式，但是我面临Firefox和Safari的问题.

显然，至少在尝试将值设置为bounding-box时，应用于组<g></g>的pointer-events属性在该浏览器上的行为与其他现代浏览器不同.

我在做

g {
  pointer-events: bounding-box;
}

，但是只有当实际的<path>元素悬停时才触发悬停，而不是整个组<g>触发.

我可以使用对此没有说什么，它提到了svg也有支持此属性.

下面有一个示例代码供您查看我的一个SVG的外观. 在chrome上悬停时，主要的包含组区域将触发悬停动画，在Firefox上，实际的路径(在这种情况下为图标行)需要悬停才能实现. 

<?xml version="1.0" encoding="UTF-8"?>
<svg width="40px" height="40px" viewBox="0 0 40 40" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" >
    <style>
        g {
            pointer-events: bounding-box;     
            //not working on FF
        }
        #mobile:hover .flip {
            transform-origin:55% 50%;
            -moz-transform-origin:55% 50%;
            animation: flip_left 1.6s forwards;
        }
        @keyframes flip_left {
          0% {transform: perspective(2000px) rotateY(90deg) skewY(-1deg)}
          30% {transform:perspective(2000px) rotateY(-25deg) skewY(-0.8deg)}
          50% {transform:perspective(2000px) rotateY(20deg) skewY(0.8deg)}
          70% {transform:perspective(2000px) rotateY(-10deg) skewY(-0.8deg)}
          100% {transform:perspective(2000px) rotateY(0deg)}
        }
    </style>
    <!-- Generator: Sketch 51.2 (57519) - http://www.bohemiancoding.com/sketch -->
    <title>Mobile solutions</title>
    <desc>Created with Sketch.</desc>
    <defs></defs>
    <g id="mobile" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
        <g id="MS_HP_Usecase_Based_Page-Desktop-2A" transform="translate(-766.000000, -418.000000)" stroke="#00A0DF" stroke-width="1.25">
            <g id="Asset-5" transform="translate(766.000000, 418.000000)">
                <g class="flip">
                <rect id="Rectangle-path" stroke-linecap="round" stroke-linejoin="round" x="12.35" y="7.41" width="15.32" height="25.33" rx="2.03"></rect>
                <circle id="Oval" stroke-linecap="round" stroke-linejoin="round" cx="20.01" cy="28.72" r="1.58"></circle>
                <path d="M18.43,10.72 L21.48,10.72" id="Shape" stroke-linecap="round" stroke-linejoin="round"></path>
            </g>
                <circle id="Oval" cx="19.67" cy="19.67" r="19.04"></circle>
            </g>
        </g>
    </g>
</svg>

我想为此找到一种解决方法，因为我想使该动画能够在浏览器中工作.我最终想使它也适用于IE11和Edge.

谢谢

解决方案

因此，大多数浏览器似乎不支持pointer-events: bounding-box.

我实施了在我的问题的评论部分建议的解决方法@ccprog.

我在svg中添加了一个<rect fill="none">元素，该元素与SVG本身的尺寸相同.我为该元素添加了一个:hover选择器，并为同级选择器~添加了内部具有flip类的同级选择器.

请参阅CSS:

#mobile-hover {
   visibility: visible;
   pointer-events: visible;
}
#mobile-hover:hover ~ .group .flip {
  -moz-transform-origin:55% 50%;
  -webkit-transform-origin: 55% 50%;
  transform-origin:55% 50%;
  -webkit-animation: flip_left 1.6s forwards;
  animation: flip_left 1.6s forwards;
}

我发现必须将pointer-events: visible添加到rect元素中，这样它才能检测到:hover.我将visibility: visible添加为pointer-events: visible的要求.

在完整的新SVG代码下面:

<?xml version="1.0" encoding="UTF-8"?>
<svg width="40px" height="40px" viewBox="0 0 40 40" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" id="mobile-icon">
    <style>
        #mobile-hover {
        visibility: visible;
        pointer-events: visible;
        }
        #mobile-hover:hover ~ .group .flip {
            -moz-transform-origin:55% 50%;
            -webkit-transform-origin: 55% 50%;
            transform-origin:55% 50%;
            -webkit-animation: flip_left 1.6s forwards;
            animation: flip_left 1.6s forwards;
        }
        @keyframes flip_left {
          0% {transform: perspective(2000px) rotateY(90deg) skewY(-1deg)}
          30% {transform:perspective(2000px) rotateY(-25deg) skewY(-0.8deg)}
          50% {transform:perspective(2000px) rotateY(20deg) skewY(0.8deg)}
          70% {transform:perspective(2000px) rotateY(-10deg) skewY(-0.8deg)}
          100% {transform:perspective(2000px) rotateY(0deg)}
        }
    </style>
    <!-- Generator: Sketch 51.2 (57519) - http://www.bohemiancoding.com/sketch -->
    <title>Mobile solutions</title>
    <desc>Created with Sketch.</desc>
    <defs></defs>
    <g id="mobile" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd" >
    <rect fill="none" width="40" height="40" id="mobile-hover">
    </rect>
        <g id="MS_HP_Usecase_Based_Page-Desktop-2A" transform="translate(-766.000000, -418.000000)" stroke="#00A0DF" stroke-width="1.25" class="group">
            <g id="Asset-5" transform="translate(766.000000, 418.000000)">
                <g class="flip">
                <rect id="Rectangle-path" stroke-linecap="round" stroke-linejoin="round" x="12.35" y="7.41" width="15.32" height="25.33" rx="2.03"></rect>
                <circle id="Oval" stroke-linecap="round" stroke-linejoin="round" cx="20.01" cy="28.72" r="1.58"></circle>
                <path d="M18.43,10.72 L21.48,10.72" id="Shape" stroke-linecap="round" stroke-linejoin="round"></path>
            </g>
                <circle id="Oval" cx="19.67" cy="19.67" r="19.04"></circle>
            </g>
        </g>

    </g>
</svg>

可在Chrome，Safari和Firefox上运行，接下来我将尝试测试IE11和Edge.

非常感谢，

I'm working on some animated SVGs with CSS animations that triggers on hover. I'm being able to have the SVG animate on hover the way I want to for Chrome but I'm facing a Firefox and Safari issue.

Apparently, the pointer-events property applied to groups <g></g> doesn't give same behavior on this browser than on the other modern ones, at least when trying to set the value to bounding-box.

I'm doing

g {
  pointer-events: bounding-box;
}

but the hover only gets triggered when the actual <path> element is hovered, not the whole group <g> as I would need to.

Can I use doesn't say anything about this, it mentions svgs also have support for this property.

Below there's a sample code for you to see how one of my SVGs looks like. On chrome hovering the main containing group area will trigger the hover animation, on Firefox the actual path (the icon lines in this case) needs to be hovered in order to that to happen. 

<?xml version="1.0" encoding="UTF-8"?>
<svg width="40px" height="40px" viewBox="0 0 40 40" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" >
    <style>
        g {
            pointer-events: bounding-box;     
            //not working on FF
        }
        #mobile:hover .flip {
            transform-origin:55% 50%;
            -moz-transform-origin:55% 50%;
            animation: flip_left 1.6s forwards;
        }
        @keyframes flip_left {
          0% {transform: perspective(2000px) rotateY(90deg) skewY(-1deg)}
          30% {transform:perspective(2000px) rotateY(-25deg) skewY(-0.8deg)}
          50% {transform:perspective(2000px) rotateY(20deg) skewY(0.8deg)}
          70% {transform:perspective(2000px) rotateY(-10deg) skewY(-0.8deg)}
          100% {transform:perspective(2000px) rotateY(0deg)}
        }
    </style>
    <!-- Generator: Sketch 51.2 (57519) - http://www.bohemiancoding.com/sketch -->
    <title>Mobile solutions</title>
    <desc>Created with Sketch.</desc>
    <defs></defs>
    <g id="mobile" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
        <g id="MS_HP_Usecase_Based_Page-Desktop-2A" transform="translate(-766.000000, -418.000000)" stroke="#00A0DF" stroke-width="1.25">
            <g id="Asset-5" transform="translate(766.000000, 418.000000)">
                <g class="flip">
                <rect id="Rectangle-path" stroke-linecap="round" stroke-linejoin="round" x="12.35" y="7.41" width="15.32" height="25.33" rx="2.03"></rect>
                <circle id="Oval" stroke-linecap="round" stroke-linejoin="round" cx="20.01" cy="28.72" r="1.58"></circle>
                <path d="M18.43,10.72 L21.48,10.72" id="Shape" stroke-linecap="round" stroke-linejoin="round"></path>
            </g>
                <circle id="Oval" cx="19.67" cy="19.67" r="19.04"></circle>
            </g>
        </g>
    </g>
</svg>

I would like to find a workaround for this, since I want to make this animations work cross browser. I would like to eventually make it work for IE11 and Edge too.

Thanks,

解决方案

So pointer-events: bounding-box seems to not be supported by most browsers.

I implemented the workaround @ccprog suggested on the comments section of my question.

I added a <rect fill="none"> element to svg, that is same dimensions than the SVG itself. I added a :hover selector for that element and sibling selector ~ to select its sibling group with the flip class inside.

See CSS:

#mobile-hover {
   visibility: visible;
   pointer-events: visible;
}
#mobile-hover:hover ~ .group .flip {
  -moz-transform-origin:55% 50%;
  -webkit-transform-origin: 55% 50%;
  transform-origin:55% 50%;
  -webkit-animation: flip_left 1.6s forwards;
  animation: flip_left 1.6s forwards;
}

I found out I had to add pointer-events: visible to the rect element so it would detect the :hover. I added visibility: visible as a requirement to pointer-events: visible to work.

Below the full new SVG code:

<?xml version="1.0" encoding="UTF-8"?>
<svg width="40px" height="40px" viewBox="0 0 40 40" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" id="mobile-icon">
    <style>
        #mobile-hover {
        visibility: visible;
        pointer-events: visible;
        }
        #mobile-hover:hover ~ .group .flip {
            -moz-transform-origin:55% 50%;
            -webkit-transform-origin: 55% 50%;
            transform-origin:55% 50%;
            -webkit-animation: flip_left 1.6s forwards;
            animation: flip_left 1.6s forwards;
        }
        @keyframes flip_left {
          0% {transform: perspective(2000px) rotateY(90deg) skewY(-1deg)}
          30% {transform:perspective(2000px) rotateY(-25deg) skewY(-0.8deg)}
          50% {transform:perspective(2000px) rotateY(20deg) skewY(0.8deg)}
          70% {transform:perspective(2000px) rotateY(-10deg) skewY(-0.8deg)}
          100% {transform:perspective(2000px) rotateY(0deg)}
        }
    </style>
    <!-- Generator: Sketch 51.2 (57519) - http://www.bohemiancoding.com/sketch -->
    <title>Mobile solutions</title>
    <desc>Created with Sketch.</desc>
    <defs></defs>
    <g id="mobile" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd" >
    <rect fill="none" width="40" height="40" id="mobile-hover">
    </rect>
        <g id="MS_HP_Usecase_Based_Page-Desktop-2A" transform="translate(-766.000000, -418.000000)" stroke="#00A0DF" stroke-width="1.25" class="group">
            <g id="Asset-5" transform="translate(766.000000, 418.000000)">
                <g class="flip">
                <rect id="Rectangle-path" stroke-linecap="round" stroke-linejoin="round" x="12.35" y="7.41" width="15.32" height="25.33" rx="2.03"></rect>
                <circle id="Oval" stroke-linecap="round" stroke-linejoin="round" cx="20.01" cy="28.72" r="1.58"></circle>
                <path d="M18.43,10.72 L21.48,10.72" id="Shape" stroke-linecap="round" stroke-linejoin="round"></path>
            </g>
                <circle id="Oval" cx="19.67" cy="19.67" r="19.04"></circle>
            </g>
        </g>

    </g>
</svg>

Works on Chrome, Safari and Firefox and I'm attempting to test IE11 and Edge next.

Many thanks,

这篇关于CSS:将鼠标悬停在SVG组区域上，而不是渲染的像素，指针事件:边界框在跨浏览器上不起作用.解决方法的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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