cyf
265 lines
9.3 KiB
C#
265 lines
9.3 KiB
C#
using Lskj.Business;
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using Lskj.Business.Impl;
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using Lskj.Model;
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using Lskj.Util;
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.Linq;
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using System.Runtime.InteropServices;
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using System.Text;
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using System.Windows.Forms;
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namespace Lskj.Main
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{
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public partial class FrmWatermark : Form
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{
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// 保存主窗体引用，用于同步位置和大小
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private Form _mainForm;
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private bool _eventsDetached;
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public FrmWatermark(Form mainForm)
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{
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InitializeComponent();
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_mainForm = mainForm; // 接收主窗体引用
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this.FormBorderStyle = FormBorderStyle.None;
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this.ControlBox = false;
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this.ShowInTaskbar = false;
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// 设置窗体背景为透明
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Color color = Color.FromArgb(175, 175, 175);
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this.BackColor = color;
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this.TransparencyKey = color;
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this.Opacity = 0.3;
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//重绘界面，绘制水印
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this.Paint += FrmWatermark_Paint;
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this.Disposed += FrmWatermark_Disposed;
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// 监听主窗体的移动和大小变化（关键修复）
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if (_mainForm != null)
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{
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_mainForm.LocationChanged += MainForm_LocationChanged;
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_mainForm.SizeChanged += MainForm_SizeChanged;
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_mainForm.VisibleChanged += MainForm_VisibleChanged;
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_mainForm.FormClosing += MainForm_FormClosing;
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}
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// 初始同步位置和大小
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SyncPositionAndSize();
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}
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// 主窗体位置变化时同步水印位置
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private void MainForm_LocationChanged(object sender, EventArgs e)
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{
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if (IsUnavailable()) return;
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SyncPositionAndSize();
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}
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// 主窗体大小变化时同步水印大小和位置
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private void MainForm_SizeChanged(object sender, EventArgs e)
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{
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if (IsUnavailable()) return;
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SyncPositionAndSize();
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}
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// 主窗体显示状态变化时同步
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private void MainForm_VisibleChanged(object sender, EventArgs e)
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{
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if (IsUnavailable()) return;
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this.Visible = _mainForm.Visible;
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if (_mainForm.Visible)
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{
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SyncPositionAndSize();
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this.BringToFront();
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}
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}
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// 主窗体关闭时同步关闭水印
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private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
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{
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SafeClose();
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}
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// 同步水印窗体与主窗体的位置和大小
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private void SyncPositionAndSize()
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{
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if (IsUnavailable()) return;
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// 关键修复：在多屏幕环境下正确计算位置
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this.Size = _mainForm.ClientSize;
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this.Location = _mainForm.PointToScreen(new Point(0, 30));
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// 确保水印在主窗体上方
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if (_mainForm.WindowState != FormWindowState.Minimized)
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{
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//this.TopMost = true;
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this.BringToFront();
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}
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// 强制重绘
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this.Invalidate();
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}
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public void SafeClose()
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{
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if (this.IsDisposed || this.Disposing)
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return;
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DetachMainFormEvents();
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this.Close();
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}
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private bool IsUnavailable()
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{
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return this.IsDisposed || this.Disposing || _mainForm == null || _mainForm.IsDisposed || _mainForm.Disposing;
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}
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private void DetachMainFormEvents()
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{
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if (_eventsDetached || _mainForm == null)
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return;
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_mainForm.LocationChanged -= MainForm_LocationChanged;
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_mainForm.SizeChanged -= MainForm_SizeChanged;
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_mainForm.VisibleChanged -= MainForm_VisibleChanged;
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_mainForm.FormClosing -= MainForm_FormClosing;
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_eventsDetached = true;
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}
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protected override void OnFormClosed(FormClosedEventArgs e)
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{
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DetachMainFormEvents();
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_mainForm = null;
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base.OnFormClosed(e);
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}
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private void FrmWatermark_Disposed(object sender, EventArgs e)
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{
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DetachMainFormEvents();
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_mainForm = null;
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}
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private void FrmWatermark_Paint(object sender, PaintEventArgs e)
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{
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try
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{
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GraphicsText graphicsText = new GraphicsText();
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graphicsText.Graphics = e.Graphics;
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StringFormat format = new StringFormat();
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format.Alignment = StringAlignment.Center;
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format.LineAlignment = StringAlignment.Center;
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Pen pen = new Pen(Color.Red, 2f);
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Font watermarkFont = new Font("宋体", 15, FontStyle.Bold);
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Color color = Color.FromArgb(200, 200, 200);
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//int alpha = 128; // 设置透明度为128（半透明）
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//color = Color.FromArgb(alpha, color);
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SolidBrush brush = new SolidBrush(color);
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string content = ERPInfo.Instance.UserName;
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if (!string.IsNullOrWhiteSpace(SystemInfo.Instance.WatermarkContent))
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{
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content = ReplaceHelper.ReplaceUserInfo(SystemInfo.Instance.WatermarkContent);
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content=content.Replace("{loginMac}", ERPInfo.Instance.MacAddress + "", true);
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}
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if (!string.IsNullOrEmpty(content))
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{
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// 1. 测量文本实际尺寸
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SizeF textSize = e.Graphics.MeasureString(content, watermarkFont);
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// 2. 计算旋转角度和左侧预留空间
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float rotationAngle = -30f; // 旋转角度
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double radians = rotationAngle * Math.PI / 180; // 转换为弧度
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// 计算旋转后文本左侧可能超出的最大距离
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float leftOverlap = (float)(Math.Abs(textSize.Width * Math.Cos(radians)) / 2 +
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Math.Abs(textSize.Height * Math.Sin(radians)) / 2);
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// 3. 计算动态间距
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int horizontalSpacing = (int)(textSize.Width * 1.5);
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int verticalSpacing = (int)(textSize.Height * 2);
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// 设置最小间距
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horizontalSpacing = Math.Max(horizontalSpacing, 250);
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verticalSpacing = Math.Max(verticalSpacing, 150);
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// 4. 计算绘制区域（只限制左侧，不限制右侧）
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int marginLeft = (int)leftOverlap; // 左侧预留空间，防止超出
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int marginTop = 30; // 顶部基础边距
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int marginBottom = 40; // 底部基础边距
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int startX = marginLeft; // 起始X，确保左侧不超出
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int startY = marginTop; // 起始Y
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int maxY = this.Height - marginBottom; // 最大Y，避免底部超出
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// 5. 绘制水印网格
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for (int i = startY; i < maxY; i += verticalSpacing)
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{
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// 只限制左侧，右侧允许超出（不设置maxX）
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for (int j = startX; j < this.Width + horizontalSpacing; j += horizontalSpacing)
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{
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var state = e.Graphics.Save();
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e.Graphics.TranslateTransform(j, i);
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e.Graphics.RotateTransform(rotationAngle);
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graphicsText.DrawString(
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content,
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watermarkFont,
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brush,
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new PointF(0, 0),
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format,
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0f);
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e.Graphics.Restore(state);
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}
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}
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}
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//if (!string.IsNullOrEmpty(content))
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//{
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// int x = 20;
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// int y = 20;
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// for (int i = 30; i < this.Height - 40; i=i+200)
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// {
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// for (int j = 40; j < this.Width - 40; j = j + 250)
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// {
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// graphicsText.DrawString(content, new Font("宋体", 15, FontStyle.Bold), brush, new PointF(j,i), format, -30f);
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// }
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// }
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// e.Graphics.TranslateTransform(x, y);
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// e.Graphics.RotateTransform(-20f);
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//}
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e.Graphics.ResetTransform();
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}
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catch (Exception ex)
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{
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string Message = ErrorMessage.PromptErrorMessage(ex);
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//MessageUtil.Show(Message, ex.Message);
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}
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}
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/// <summary>
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/// 鼠标穿透水印操作下方
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/// </summary>
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protected override CreateParams CreateParams
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{
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get
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{
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CreateParams cp = base.CreateParams;
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cp.ExStyle |= 0x00000020; // 设置 WS_EX_TRANSPARENT 样式
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return cp;
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}
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}
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}
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}
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