Layui를 사용하여 이미지 드래그 및 확대/축소 효과를 얻는 방법

<link rel="stylesheet" href="https://cdn.staticfile.org/layui/2.5.6/css/layui.css">
<script src="https://cdn.staticfile.org/layui/2.5.6/layui.js"></script>
<script src="https://cdn.staticfile.org/jquery/3.5.1/jquery.min.js"></script>

<div id="image-container">
  <img src="path/to/your/image.jpg" id="image" alt="image" draggable="false">
</div>

#image-container {
  position: relative;
  width: 600px;
  height: 400px;
  overflow: hidden;
}

#image {
  position: absolute;
  cursor: move;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

layui.use(['layer'], function(){
  var layer = layui.layer;
  
  // 获取图片容器和图片对象
  var imageContainer = document.getElementById('image-container');
  var image = document.getElementById('image');
  
  // 定义图片大小范围
  var imageMinWidth = 100;
  var imageMaxWidth = 800;
  var imageMinHeight = 100;
  var imageMaxHeight = 800;
  
  // 定义图片缩放比例
  var scaleFactor = 0.1;
  
  // 定义图片拖拽状态
  var dragging = false;
  var dragStartX = 0;
  var dragStartY = 0;
  
  // 监听鼠标按下事件
  image.addEventListener('mousedown', function(event){
    dragging = true;
    dragStartX = event.clientX - image.offsetLeft;
    dragStartY = event.clientY - image.offsetTop;
    image.style.cursor = 'grabbing';
  });
  
  // 监听鼠标移动事件
  imageContainer.addEventListener('mousemove', function(event){
    if(dragging){
      var offsetX = event.clientX - dragStartX;
      var offsetY = event.clientY - dragStartY;
      
      image.style.left = offsetX + 'px';
      image.style.top = offsetY + 'px';
    }
  });
  
  // 监听鼠标放开事件
  image.addEventListener('mouseup', function(){
    dragging = false;
    image.style.cursor = 'grab';
  });
  
  // 监听鼠标滚轮事件
  image.addEventListener('wheel', function(event){
    event.preventDefault();
    
    var delta = Math.sign(event.deltaY);
    var width = image.width + delta * scaleFactor * image.width;
    var height = image.height + delta * scaleFactor * image.height;
    
    if(width > imageMinWidth && width < imageMaxWidth && height > imageMinHeight && height < imageMaxHeight){
      image.width = width;
      image.height = height;
    }
  });
});