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158 lines
4.7 KiB
Markdown
158 lines
4.7 KiB
Markdown
---
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title: JS实现鼠标样式
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tags:
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- Mkdocs
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---
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不建议更改，因为默认就是最简洁
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<!--  -->
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在`docs/javascripts/extra.js`下复制粘贴：
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```java
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var CURSOR;
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Math.lerp = (a, b, n) => (1 - n) * a + n * b;
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const getStyle = (el, attr) => {
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try {
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return window.getComputedStyle
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? window.getComputedStyle(el)[attr]
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: el.currentStyle[attr];
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} catch (e) {}
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return "";
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};
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class Cursor {
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constructor() {
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this.pos = {curr: null, prev: null};
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this.pt = [];
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this.create();
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this.init();
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this.render();
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}
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move(left, top) {
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this.cursor.style["left"] = `${left}px`;
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this.cursor.style["top"] = `${top}px`;
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}
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create() {
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if (!this.cursor) {
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this.cursor = document.createElement("div");
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this.cursor.id = "cursor";
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this.cursor.classList.add("hidden");
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document.body.append(this.cursor);
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}
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var el = document.getElementsByTagName('*');
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for (let i = 0; i < el.length; i++)
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if (getStyle(el[i], "cursor") == "pointer")
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this.pt.push(el[i].outerHTML);
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document.body.appendChild((this.scr = document.createElement("style")));
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// 这里改变鼠标指针的颜色 由svg生成
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this.scr.innerHTML = `* {cursor: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8' width='8px' height='8px'><circle cx='4' cy='4' r='4' opacity='.5'/></svg>") 4 4, auto}`;
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}
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refresh() {
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this.scr.remove();
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this.cursor.classList.remove("hover");
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this.cursor.classList.remove("active");
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this.pos = {curr: null, prev: null};
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this.pt = [];
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this.create();
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this.init();
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this.render();
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}
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init() {
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document.onmouseover = e => this.pt.includes(e.target.outerHTML) && this.cursor.classList.add("hover");
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document.onmouseout = e => this.pt.includes(e.target.outerHTML) && this.cursor.classList.remove("hover");
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document.onmousemove = e => {(this.pos.curr == null) && this.move(e.clientX - 8, e.clientY - 8); this.pos.curr = {x: e.clientX - 8, y: e.clientY - 8}; this.cursor.classList.remove("hidden");};
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document.onmouseenter = e => this.cursor.classList.remove("hidden");
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document.onmouseleave = e => this.cursor.classList.add("hidden");
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document.onmousedown = e => this.cursor.classList.add("active");
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document.onmouseup = e => this.cursor.classList.remove("active");
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}
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render() {
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if (this.pos.prev) {
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this.pos.prev.x = Math.lerp(this.pos.prev.x, this.pos.curr.x, 0.15);
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this.pos.prev.y = Math.lerp(this.pos.prev.y, this.pos.curr.y, 0.15);
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this.move(this.pos.prev.x, this.pos.prev.y);
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} else {
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this.pos.prev = this.pos.curr;
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}
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requestAnimationFrame(() => this.render());
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}
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}
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(() => {
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CURSOR = new Cursor();
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// 需要重新获取列表时，使用 CURSOR.refresh()
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})();
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```
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其中比较重要的参数就是鼠标的尺寸和颜色，已经在上图中标出，目前发现颜色只支持RGB写法和固有名称写法（例如red这种），其他参数也可以自行摸索：
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```javascript
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* {cursor: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8' width='8px' height='8px'><circle cx='4' cy='4' r='4' opacity='1.0' fill='rgb(57, 197, 187)'/></svg>") 4 4, auto}`
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```
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在docs/stylesheets/extra.css添加如下代码：
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```css
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/* 鼠标样式 */
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#cursor {
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position: fixed;
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width: 16px;
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height: 16px;
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/* 这里改变跟随的底色 */
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background: var(--theme-color);
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border-radius: 8px;
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opacity: 0.25;
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z-index: 10086;
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pointer-events: none;
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transition: 0.2s ease-in-out;
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transition-property: background, opacity, transform;
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}
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#cursor.hidden {
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opacity: 0;
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}
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#cursor.hover {
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opacity: 0.1;
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transform: scale(2.5);
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-webkit-transform: scale(2.5);
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-moz-transform: scale(2.5);
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-ms-transform: scale(2.5);
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-o-transform: scale(2.5);
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}
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#cursor.active {
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opacity: 0.5;
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transform: scale(0.5);
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-webkit-transform: scale(0.5);
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-moz-transform: scale(0.5);
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-ms-transform: scale(0.5);
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-o-transform: scale(0.5);
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}
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```
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这里比较重要的参数就是鼠标跟随的圆形颜色，可以根据自己的喜好进行更改：
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```css
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#cursor {
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/* 这里改变跟随的底色 */
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background: rgb(57, 197, 187);
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}
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```
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!!! Note "注意⚠️"
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需要在mkdocs.yml中引入js和css
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```
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extra_javascript:
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- javascripts/extra.js
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- javascripts/mathjax.js
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extra_css:
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- stylesheets/extra.css
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``` |