Vue框架提供了一個強大的Canvas功能，使得用戶可以通過拖拽改變Canvas元素的位置。下面是一個使用Vue的拖拽插件實現Canvas拖拽的示例。

//template
<template>
<div class="box" ref="box">
<canvas ref="canvas"></canvas>
</div>
</template>
//JavaScript
<script>
import draggable from 'vuedraggable';
export default {
components: { draggable },
data () {
return {
canvas: null,  //canvas對象
context: null,  //canvas的上下文對象
box: null,  //拖拽的容器
dragItem: null, //當前拖拽的元素
isDragging: false, //是否處于拖拽狀態
startX: 0,   //拖拽開始時的X位置
startY: 0    //拖拽開始時的Y位置
};
},
mounted () {
this.initCanvas();  //初始化Canvas
this.initDraggable();  //初始化拖拽
},
methods: {
initCanvas () {
this.canvas = this.$refs.canvas;
this.context = this.canvas.getContext('2d');
//繪制矩形
this.context.fillStyle = '#f00';
this.context.fillRect(50, 50, 100, 100);
},
initDraggable () {
this.box = this.$refs.box;
this.box.addEventListener('dragstart', this.handleDragStart);
this.box.addEventListener('mousemove', this.handleDragMove);
this.box.addEventListener('dragend', this.handleDragEnd);
},
handleDragStart (event) {
this.dragItem = event.target;
this.startX = event.clientX - this.dragItem.offsetLeft;
this.startY = event.clientY - this.dragItem.offsetTop;
this.isDragging = true;
//設置拖拽效果
event.dataTransfer.effectAllowed = 'move';
event.dataTransfer.setData('text/html', '');
},
handleDragMove (event) {
if (this.isDragging) {
//設置拖拽元素的位置
this.dragItem.style.left = (event.clientX - this.startX) + 'px';
this.dragItem.style.top = (event.clientY - this.startY) + 'px';
}
},
handleDragEnd (event) {
this.isDragging = false;
}
}
};
</script>

通過以上代碼，我們可以實現一個簡單的Canvas拖拽功能，并且可以在拖拽的同時改變繪制圖形元素的位置，使得用戶可以自由地進行Canvas元素的編輯。