using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace ShenTun.ImageCollection.Test
{
    public partial class ImageMouseMoveForm : Form
    {
        private Panel panel;
        private PictureBox pictureBox;
        private HScrollBar hScrollBar;
        private VScrollBar vScrollBar;
        private Label positionLabel;
        private bool isDragging = false;
        private Point dragStartPoint;

        public ImageMouseMoveForm()
        {
            this.Width = 800;
            this.Height = 600;
            this.Text = "Image Viewer with Scrollbars";

            panel = new Panel();
            panel.Dock = DockStyle.Fill;
            panel.AutoScroll = true;

            pictureBox = new PictureBox();
            pictureBox.SizeMode = PictureBoxSizeMode.AutoSize;
            pictureBox.Image = Image.FromFile(@"d:\\log\\2407240149_0001.jpg");  // 替换为你的图片路径
            pictureBox.MouseMove += PictureBox_MouseMove;
            pictureBox.MouseDown += PictureBox_MouseDown;
            pictureBox.MouseUp += PictureBox_MouseUp;
            panel.Controls.Add(pictureBox);

            hScrollBar = new HScrollBar();
            hScrollBar.Dock = DockStyle.Bottom;
            hScrollBar.Scroll += HScrollBar_Scroll;

            vScrollBar = new VScrollBar();
            vScrollBar.Dock = DockStyle.Right;
            vScrollBar.Scroll += VScrollBar_Scroll;

            positionLabel = new Label();
            positionLabel.AutoSize = true;
            positionLabel.Text = "Mouse Position: (0, 0)";
            positionLabel.Dock = DockStyle.Top;

            this.Controls.Add(positionLabel);
            this.Controls.Add(panel);
            this.Controls.Add(hScrollBar);
            this.Controls.Add(vScrollBar);

            pictureBox.MouseMove += PictureBox_MouseMove;
            hScrollBar.Scroll += HScrollBar_Scroll;
            vScrollBar.Scroll += VScrollBar_Scroll;
        }

        private void PictureBox_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                isDragging = true;
                dragStartPoint = e.Location;
            }
        }

        private void PictureBox_MouseMove(object sender, MouseEventArgs e)
        {
            if (pictureBox.ClientRectangle.Contains(pictureBox.PointToClient(Cursor.Position)))
            {
                // 计算鼠标位置相对于图片的位置
                Point pictureBoxLocation = pictureBox.PointToClient(Cursor.Position);
                int relativeX = pictureBoxLocation.X - panel.AutoScrollPosition.X;
                int relativeY = pictureBoxLocation.Y - panel.AutoScrollPosition.Y;
                positionLabel.Text = $"Mouse Position: ({relativeX}, {relativeY})";
            }
        }

        private void PictureBox_MouseUp(object sender, MouseEventArgs e)
        {
            isDragging = false;
        }

        private void HScrollBar_Scroll(object sender, ScrollEventArgs e)
        {
            panel.AutoScrollPosition = new Point(-hScrollBar.Value, panel.AutoScrollPosition.Y);
        }

        private void VScrollBar_Scroll(object sender, ScrollEventArgs e)
        {
            panel.AutoScrollPosition = new Point(panel.AutoScrollPosition.X, -vScrollBar.Value);
        }

    }
}