如何使 svg 路径悬停区域更大 [英] How do I make svg path hover area bigger

问题描述

我有什么:

#poly-1:hover {
    stroke: green;
}

<svg width="1000" height="500" id="chart-main-canvas" style="background-color: bisque; z-index:5000;"> 
    <path id="poly-1" d="M 5,10 C 24,88 60.99999999999998,322 100,400 C 139,478 149,470 200,400 C 251,330 295,30.000000000000007 355,50 C 415,70 470.99999999999994,410 500,500" fill="none" stroke="red" style="z-index:6000;"></path>
</svg>

如果我准确地将鼠标悬停在 path 上(这是一项棘手的任务)，它会将颜色更改为绿色.

If I hover exactly on path, which is a tricky task, line it will change color to green.

我想要做的是让这条路径的悬停区域更大，这样我就可以将光标移动到path附近的+-5px代码>区域，它仍然会改变颜色.

What I want to do is to make hover area of this path bigger, so I could move my cursor somewhere +-5px near the path area and it will still change color.

我知道我能做的唯一两种方法是:

The only two ways I know I could do is:

1. 使 stroke-width 变大，但我不希望红色的实际大小增加.
2. 使用我的主路径创建具有更大 stroke-width 的不可见重复路径，并添加条件，如果我将鼠标悬停在其上 - 我的主路径将改变颜色.

1. Make stroke-width bigger, but I don't want its actual size with red color to increade.
2. With my main path create invisible duplicating path that has bigger stroke-width and add condition that if I hover on it - my main path will change color.

但是有什么简单的方法可以做到吗?

But there is any simple way to do it?

推荐答案

这个答案实际上是您的第二个选择.

This answer is practically your second option.

我将路径 #poly-1 放在 defs 中，并首先使用它的笔画宽度较宽且没有笔画.为了使其对鼠标敏感，我使用 pointer-events="stroke"

I'm putting the path #poly-1 in the defs and use it first with a wide stroke-width and no stroke. In order to make it sensitive to the mouse I'm using pointer-events="stroke"

<use xlink:href="#poly-1" stroke-width="10" pointer-events="stroke"/>

接下来是另一种用途 - 可见的 - 带有红色笔划.

Next comes another use - the visible one - with a red stroke.

我将两个 use 元素放在一个组中.当我将鼠标悬停在组上时，第二个使用元素的笔画会发生变化.

I'm putting both use elements in a group. The stroke of the second use element changes when I'm mousing over the group.

#group .use{
stroke:red
} 
#group:hover .use{
stroke: green; 
}

<svg width="1000" height="500" id="chart-main-canvas" style="background-color: bisque; z-index:5000;">
<defs>
<path id="poly-1" d="M 5,10 C 24,88 61,322 100,400 C 139,478 149,470 200,400 C 251,330 295,30 355,50 C 415,70 471,410 500,500" fill="none" ></path>
</defs>
<g id="group">
<use xlink:href="#poly-1" stroke-width="10" pointer-events="stroke"/>
<use class="use" xlink:href="#poly-1" />
</g>
</svg>

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