# mpvue-cropper

> mpvue 版本 we-cropper

## Install

```bash
npm install mpvue-cropper --save
```

## Usage example

```vue
<template>
  <div>
    <mpvue-cropper 
      ref="cropper"
      :option="cropperOpt"
      @ready="cropperReady"
      @beforeDraw="cropperBeforeDraw"
      @beforeImageLoad="cropperBeforeImageLoad"
      @beforeLoad="cropperLoad"
      ></mpvue-cropper>
    <div 
      class="cropper-buttons" 
      :style="{ color:cropperOpt.boundStyle.color}">
    <div
      class="upload btn"
      @tap="uploadTap">
      上传图片
    </div>
    <div
      class="getCropperImage btn"
      :style="{ backgroundColor: cropperOpt.boundStyle.color }"
      @tap="getCropperImage">
      生成图片
    </div>
  </div>
  </div>
</template>

<script>
import MpvueCropper from 'mpvue-cropper'

let wecropper

const device = wx.getSystemInfoSync()
const width = device.windowWidth
const height = device.windowHeight - 50

export default {
  data () {
    return {
      cropperOpt: {
        id: 'cropper',
        targetId: 'targetCropper',
        pixelRatio: device.pixelRatio,
        width,
        height,
        scale: 2.5,
        zoom: 8,
        cut: {
          x: (width - 300) / 2,
          y: (height - 300) / 2,
          width: 300,
          height: 300
        },
        boundStyle: {
          color: '#04b00f',
          mask: 'rgba(0,0,0,0.8)',
          lineWidth: 1
        }
      }
    }
  },

  components: {
    MpvueCropper
  },

  methods: {
    cropperReady (...args) {
      console.log('cropper ready!')
    },
    cropperBeforeImageLoad (...args) {
      console.log('before image load')
    },
    cropperLoad (...args) {
      console.log('image loaded')
    },
    cropperBeforeDraw (...args) {
      // Todo: 绘制水印等等
    },
    uploadTap () {
      wx.chooseImage({
        count: 1, // 默认9
        sizeType: ['original', 'compressed'], // 可以指定是原图还是压缩图，默认二者都有
        sourceType: ['album', 'camera'], // 可以指定来源是相册还是相机，默认二者都有
        success: (res) => {
          const src = res.tempFilePaths[0]
          //  获取裁剪图片资源后，给data添加src属性及其值

          wecropper.pushOrigin(src)
        }
      })
    },
    getCropperImage () {
      wecropper.getCropperImage({ original: true })
        .then((src) => {
          wx.previewImage({
            current: '', // 当前显示图片的http链接
            urls: [src] // 需要预览的图片http链接列表
          })
        })
        .catch(e => {
          console.error('获取图片失败')
        })
    }
  },

  mounted () {
    wecropper = this.$refs.cropper
  }
}
</script>

<style>
.cropper-wrapper{
    position: relative;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    justify-content: center;
    height: 100%;
    background-color: #e5e5e5;
}

.cropper-buttons{
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50px;
    padding: 0 20rpx;
    box-sizing: border-box;
    line-height: 50px;
}

.cropper-buttons .upload, .cropper-buttons .getCropperImage{
    text-align: center;
}

.cropper{
    position: absolute;
    top: 0;
    left: 0;
}

.cropper-buttons{
    background-color: rgba(0, 0, 0, 0.95);
}

.btn{
    height: 30px;
    line-height: 30px;
    padding: 0 24rpx;
    border-radius: 2px;
    color: #ffffff;
}
</style>
```