uniapp中实现canvas超出屏幕滚动查看功能

<scroll-view ref="scrollView" scroll-x scroll-y style="height: 100vh;" @touchmove="onTouchMove">
			<canvas canvas-id="myCanvas" id="myCanvas" @tap="handleCanvasTap" ref="myCanvas"
				style="width: 5000rpx; height: 200vh"></canvas>
		</scroll-view>

data(){
    retrun{
        	startX: 0,
				startY: 0,
				offsetX: 0,
				offsetY: 0,
				context: null,
				endX: 0,
				endY: 0,
				isMoving: false,
    }
}

onTouchMove(e){
    				if (this.isMoving) {
					const deltaX = e.touches[0].clientX - this.startX;
					const deltaY = e.touches[0].clientY - this.startY;
					const query = uni.createSelectorQuery().in(this);
					query.select('#myCanvas').boundingClientRect().exec((res) => {
						const canvas = res[0].node;
						canvas.style.transform = `translate(${deltaX}px, ${deltaY}px)`;
					});
					this.endX = e.touches[0].clientX;
					this.endY = e.touches[0].clientY;
				}
}