async drawSaveImage() {     console.log("drawImage", this.data.resultData.shareImage,this.data.resultData._qcCodeImage_)     const {  globalData } = getApp()     const shareImage = await globalData.__saveImage     const imageQc = await publicMethods.getQcImage(this.data.resultData)     console.log("shareImage",shareImage,imageQc)     const [$bgImgInfo, $imageQc] = await Promise.all([       publicMethods.getImageInfo(shareImage),       publicMethods.getImageInfo(imageQc)     ])          const imageBg = globalData.localSaveImageUrl          console.log('imageQc', imageQc)     console.log('imageBg', imageBg)     const canvasContent = wx.createCanvasContext('myCanvas')     if (!($imageQc.height && $imageQc.width)) {       throw new Error('load qc image fail')     }     let pox = 1     let imagHeight = $bgImgInfo.height / pox     let imageWidth = $bgImgInfo.width / pox     console.log("imagHeightaaa", imagHeight, "imageWidth", imageWidth, $bgImgInfo)     await this.setCanvasRect(imageWidth, imagHeight)     canvasContent.drawImage(imageBg, 0, 0, imageWidth, imagHeight)     await canvasContent.draw(true,()=>{})     // 这个比例值 是按照 1500x 2700 的比例算的， 如果图片有放大 或者缩小需要去缩放下     let poxImage = imageWidth / 1500     // if (imageWidth)     let qcSize = 235 / pox * poxImage     let qcX = imageWidth - qcSize - 40     let qcY = imagHeight - qcSize - 120     const roundRectPadding = 4     qcX = Math.ceil(qcX)     qcY = Math.ceil(qcY)     qcSize = Math.ceil(qcSize)     publicMethods.roundRect(canvasContent, qcX - roundRectPadding, qcY - roundRectPadding, qcSize + roundRectPadding * 2, qcSize + roundRectPadding * 2)     canvasContent.drawImage($imageQc.path, qcX, qcY, qcSize, qcSize)     await canvasContent.draw(true,()=>{})     await publicMethods.sleep(200)     return new Promise((resolve, reject) => {         wx.canvasToTempFilePath({           canvasId: 'myCanvas',           success: (res) => {             resolve(res)           },           fail(err) {             console.log(err)             reject(err)           },           complete: (res)=>{             console.log("complete",res)           }         })       })   },