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node_modules/mpvue-cropper/mpvue-cropper.vue 2.54 KB
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  <template>
  <div>
    <canvas
        v-if="_canvasId"
        :canvasId="_canvasId"
        @touchstart="touchstart"
        @touchmove="touchmove"
        @touchend="touchend"
        disable-scroll
        :style="{ width: _width + 'px', height: _height + 'px', background: 'rgba(0, 0, 0, .8)' }">
    </canvas>
    <canvas
      v-if="_targetId"
      :canvas-id="_targetId"
      disable-scroll
      :style="{
        position: 'fixed',
        top: -_width * _pixelRatio + 'px',
        left: -_height * _pixelRatio + 'px',
        width: _width * _pixelRatio + 'px',
        height: _height * _pixelRatio + 'px'
      }">
    </canvas>
  </div>
  </template>
  
  <script>
    import WeCropper from 'we-cropper'
  
    export default {
      name: 'mpvue-cropper',
      props: {
        option: {
          type: Object
        }
      },
      data () {
        return {
          _wecropper: null
        }
      },
      computed: {
        _canvasId () {
          return this.option.id
        },
        _targetId () {
          return this.option.targetId
        },
        _width () {
          return this.option.width
        },
        _height () {
          return this.option.height
        },
        _pixelRatio () {
          return this.option.pixelRatio
        }
      },
      methods: {
        touchstart ($event) {
          this._wecropper.touchStart($event.mp)
        },
        touchmove ($event) {
          this._wecropper.touchMove($event.mp)
        },
        touchend ($event) {
          this._wecropper.touchEnd($event.mp)
        },
        pushOrigin (src) {
          this._wecropper.pushOrign(src)
        },
        updateCanvas () {
          this._wecropper.updateCanvas()
        },
        getCropperBase64 (fn) {
          return this._wecropper.getCropperBase64(fn)
        },
        getCropperImage (opt, fn) {
          return this._wecropper.getCropperImage(opt, fn)
        },
        init () {
          this._wecropper = new WeCropper(Object.assign(this.option, {
            id: this._canvasId,
            targetId: this._targetId,
            pixelRatio: this._pixelRatio
          }))
          .on('ready', (...args) => {
            this.$emit('ready', ...args)
          })
          .on('beforeImageLoad', (...args) => {
            this.$emit('beforeImageLoad', ...args)
          })
          .on('imageLoad', (...args) => {
            this.$emit('imageLoad', ...args)
          })
          .on('beforeDraw', (...args) => {
            this.$emit('beforeDraw', ...args)
          })
        }
      },
      onLoad () {
        if (!this.option) {
          return console.warn('[mpvue-cropper] 请传入option参数\n参数配置见文档:https://we-plugin.github.io/we-cropper/#/api')
        }
        this.init()
      }
    }
  </script>