Wechat applet pictures are scaled according to the screen scale

  //  The picture is scaled according to the screen scale 
  imageUtil(e) {
     

    let self = this,
        imageSize = {
    },
        originalWidth = e.detail.width,// The original width of the picture  
        originalHeight = e.detail.height,// The original height of the picture  
        originalScale = originalHeight/originalWidth;// Picture aspect ratio  

    let windowWidth = self.data.phoneInfo.windowWidth,
        windowHeight = self.data.phoneInfo.windowHeight,
        windowscale = windowHeight/windowWidth;// Screen aspect ratio  
 
    if(originalScale < windowscale){
    // The picture aspect ratio is smaller than the screen aspect ratio  
 
     // The zoom width of the picture is the screen width  
      imageSize.imageWidth = windowWidth; 
      imageSize.imageHeight = (windowWidth * originalHeight) / originalWidth; 
 
    }else{
    // The picture aspect ratio is greater than the screen aspect ratio  
 
     // The zoom height of the picture is the screen height  
      imageSize.imageHeight = windowHeight; 
      imageSize.imageWidth = (windowHeight * originalWidth) / originalHeight; 
 
    };
    return imageSize;
  },