using Lskj.Business.Impl;
using Lskj.Model;
using Lskj.Util;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows.Forms;

namespace Lskj.Main
{
    public partial class FrmWatermark : Form
    {
        // 保存主窗体引用，用于同步位置和大小
        private Form _mainForm;

        public FrmWatermark(Form mainForm)
        {
            InitializeComponent();

            _mainForm = mainForm; // 接收主窗体引用

            this.FormBorderStyle = FormBorderStyle.None;
            this.ControlBox = false;
            this.ShowInTaskbar = false;
            // 设置窗体背景为透明
            Color color = Color.FromArgb(175, 175, 175);
            this.BackColor = color;
            this.TransparencyKey = color;
            this.Opacity = 0.2;
            //重绘界面，绘制水印
            this.Paint += FrmWatermark_Paint;


            // 监听主窗体的移动和大小变化（关键修复）
            if (_mainForm != null)
            {
                _mainForm.LocationChanged += MainForm_LocationChanged;
                _mainForm.SizeChanged += MainForm_SizeChanged;
                _mainForm.VisibleChanged += MainForm_VisibleChanged;
                _mainForm.FormClosing += MainForm_FormClosing;
            }

            // 初始同步位置和大小
            SyncPositionAndSize();

        }

        // 主窗体位置变化时同步水印位置
        private void MainForm_LocationChanged(object sender, EventArgs e)
        {
            SyncPositionAndSize();
        }

        // 主窗体大小变化时同步水印大小和位置
        private void MainForm_SizeChanged(object sender, EventArgs e)
        {
            SyncPositionAndSize();
        }

        // 主窗体显示状态变化时同步
        private void MainForm_VisibleChanged(object sender, EventArgs e)
        {
            this.Visible = _mainForm.Visible;
            if (_mainForm.Visible)
            {
                SyncPositionAndSize();
                this.BringToFront();
            }
        }

        // 主窗体关闭时同步关闭水印
        private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
        {
            this.Close();
        }

        // 同步水印窗体与主窗体的位置和大小
        private void SyncPositionAndSize()
        {
            if (_mainForm == null || _mainForm.IsDisposed) return;

            // 关键修复：在多屏幕环境下正确计算位置
            this.Size = _mainForm.ClientSize;
            this.Location = _mainForm.PointToScreen(new Point(0,30));

            // 确保水印在主窗体上方
            if (_mainForm.WindowState != FormWindowState.Minimized)
            {
                this.TopMost = true;
                this.BringToFront();
            }

            // 强制重绘
            this.Invalidate();
        }

        private void FrmWatermark_Paint(object sender, PaintEventArgs e)
        {
            try
            {
                GraphicsText graphicsText = new GraphicsText();
                graphicsText.Graphics = e.Graphics;
                StringFormat format = new StringFormat();
                format.Alignment = StringAlignment.Center;
                format.LineAlignment = StringAlignment.Center;
                Pen pen = new Pen(Color.Red, 2f);

                int alpha = 128; // 设置透明度为128（半透明）
                Color color = Color.FromArgb(200, 200, 200); 
                //color = Color.FromArgb(alpha, color);
                SolidBrush brush = new SolidBrush(color);

                if (!string.IsNullOrEmpty(ERPInfo.Instance.UserName))
                {
                    //居中
                    //int x = (this.Width - 90) / 2;
                    //int y = (this.Height - 32) / 2;
                    //graphicsText.DrawString(ERPInfo.Instance.UserName, new Font("宋体", 20, FontStyle.Bold), brush, new PointF(x, y), format, -20f);
                    //graphicsText.DrawString(ERPInfo.Instance.UserName, new Font("宋体", 20, FontStyle.Bold), brush, new PointF(x-50, y), format, -20f);

                    int x = 20;
                    int y = 20;

                    for (int i = 30; i < this.Height - 40; i=i+200)
                    {
                        for (int j = 40; j < this.Width - 40; j = j + 250)
                        {
                            graphicsText.DrawString(ERPInfo.Instanc