原生js实现一个图片裁剪效果代码-html代码-BFW代码库

代码语言：html

所属分类：其他

代码描述：原生js实现一个图片裁剪效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开


<!DOCTYPE html>
<html lang="en" >

<head>

  <meta charset="UTF-8">


<style>
*, *::before, *::after {
  font-family: inherit;
  box-sizing: inherit;
  margin: 0;
  padding: 0;
}

html {
  box-sizing: border-box;
  font-family: 'Nunito Sans', sans-serif;
  font-size: 62.5%;
}

html body {
  font-size: 1.6rem;
  margin: 0;
}

ul {
  list-style: none;
}

a, a:link, a:visited {
  text-decoration: none;
}
</style>
  
  
  
<style>
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: inherit;
  font-family: inherit;
}

html {
  font-size: 62.5%;
  overflow: hidden;
}
html body {
  font-size: 1.6rem;
  width: 100vw;
  height: 100vh;
  overflow: inherit;
  background-color: #333;
  display: -webkit-box;
  display: flex;
  -webkit-box-align: center;
          align-items: center;
  -webkit-box-pack: center;
          justify-content: center;
}

.image-crop {
  background-color: black;
  position: relative;
  overflow: hidden;
}
.image-crop figure {
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
}
.image-crop figure.blur {
  -webkit-filter: blur(6px) brightness(0.33) saturate(0.5);
          filter: blur(6px) brightness(0.33) saturate(0.5);
}
.image-crop figure:not(.blur) {
  -webkit-clip-path: inset(calc(var(--top, 0) * 1px) calc(var(--right, 0) * 1px) calc(var(--bottom, 0) * 1px) calc(var(--left, 0) * 1px));
          clip-path: inset(calc(var(--top, 0) * 1px) calc(var(--right, 0) * 1px) calc(var(--bottom, 0) * 1px) calc(var(--left, 0) * 1px));
}
.image-crop span {
  display: block;
  position: absolute;
  top: calc(var(--top, 0) * 1px);
  right: calc(var(--right, 0) * 1px);
  bottom: calc(var(--bottom, 0) * 1px);
  left: calc(var(--left, 0) * 1px);
  border: dashed 2px rgba(255, 255, 255, 0.75);
}
.image-crop span::before, .image-crop span::after {
  content: '';
  display: block;
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
}
.image-crop span::before {
  width: 33.3%;
  height: 100%;
  border-left: dashed 1px rgba(255, 255, 255, 0.5);
  border-right: dashed 1px rgba(255, 255, 255, 0.5);
}
.image-crop span::after {
  height: 33.3%;
  width: 100%;
  border-top: dashed 1px rgba(255, 255, 255, 0.5);
  border-bottom: dashed 1px rgba(255, 255, 255, 0.5);
}
</style>



</head>

<body translate="no" >
  <div class="image-crop" data-image="//repo.bfw.wiki/bfwrepo/image/5e5ef040f1ffc.png?x-oss-process=image/auto-orient,1/resize,m_fill,w_360,h_400,/quality,q_90" style="width: 360px; height: 480px;"></div>

  
      <script >
/* config */
const minWidth = 32;
const minHeight = 32;
const threshold = 12;

(() => {
  const startPoint = [0, 0];
  let dragging = false;
  const dir = [0, 0, 0, 0];
  let currentElement, currentDimention, startDimention;
  const TOP = 0,RIGHT = 1,BOTTOM = 2,LEFT = 3;
  let moving = false;

  const onMouseMove = evt => {
    const { clientX: x, clientY: y } = evt.touches && evt.touches[0] || evt;

    if (!dragging) return;
    const diff = [x - startPoint[0], y - startPoint[1]];
    if (moving) {
      diff[0] = Math.min(Math.max(diff[0], -startDimention[LEFT]), startDimention[RIGHT]);
      diff[1] = Math.min(Math.max(diff[1], -startDimention[TOP]), startDimention[BOTTOM]);
    }

    currentDimention[LEFT] = Math.min(Math.max(startDimention[LEFT] + dir[LEFT] * diff[0], 0), currentElement.clientWidth - currentDimention[RIGHT] - minWidth);
    currentDimention[RIGHT] = Math.min(Math.max(startDimention[RIGHT] + dir[RIGHT] * diff[0], 0), currentElement.clientWidth - currentDimention[LEFT] - minWidth);
    currentDimention[TOP] = Math.min(Math.max(startDimention[TOP] + dir[TOP] * diff[1], 0), currentElement.clientHeight - currentDimention[BOTTOM] - minHeight);
    currentDimention[.........完整代码请登录后点击上方下载按钮下载查看