wx.getImageInfo({     src: uri,     success(res) {       console.log(res)       // 创建离屏 2D canvas 实例       const canvas = wx.createOffscreenCanvas({ type: '2d', width: data.data?.w, height: data.data?.h })       const id = canvas.id       // 获取 context。注意这里必须要与创建时的 type 一致       const context = canvas.getContext('2d')       context.clearRect(0, 0, data.data?.w, data.data?.h)       // 创建一个图片       const image = canvas.createImage()       image.src = res.path // 要加载的图片 url       image.onload = () => {         console.log(canvas)         console.log(21)         context.drawImage(image, data.data?.x, data.data?.y, canvas.width, canvas.height, 0, 0, canvas.width, canvas.height)         wx.canvasToTempFilePath({           x: 0,           y: 0,           width: canvas.width,           height: canvas.height,           canvas: canvas,           canvasId: id,           success(res) {             console.log("res.tempFilePath = " + res.tempFilePath)             if (res.tempFilePath) {               callback && callback({                 code: 0,                 data: {                   uri: res.tempFilePath,                   width: canvas.width,                   height: canvas.height                 }               });             } else {               callback && callback({                 code: 405,                 msg: '照片处理失败，请重新选择或拍照！'               });             }           },           fail(err) {             console.log('fail', err);             callback && callback({               code: 405,               msg: '照片处理失败，请重新选择或拍照！'             });           }         })       }     },     fail(err) {       console.log('fail', err);       callback && callback({         code: 405,         msg: '照片处理失败，请重新选择或拍照！'       });     }   });