TEAMModelHTEX/HTEXTeachLib/MainWindow.xaml.cs

using Microsoft.Web.WebView2.Core;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;

namespace HTEXTeachLib
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    ///WPF初探——利用Winform库中的NotifyIcon实现托盘小程序 
    //https://blog.csdn.net/yahahi/article/details/112636760  倒计时器 (WPF)
    ///https://www.cnblogs.com/royenhome/archive/2010/02/02/1662243.html
    public partial class MainWindow : Window
    {
        private bool isDragging = false;
        private Point startPosition;
        private bool isWebView2Ready = false;
        public MainWindow()
        {
            InitializeComponent();
            var userDataFolder = System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "Temp/webview2_temp");
            var environment = CoreWebView2Environment.CreateAsync(null, userDataFolder).Result;
            // webView.EnsureCoreWebView2Async(environment);
            webView.Loaded += WebView_CoreWebView2InitializationCompleted;
            webView.PreviewDragOver  += WebView2_PreviewDragOver;
            webView.Drop += WebView2_Drop;
            webView.KeyDown+=KeyDown;
            webView.MouseDown += WebView_MouseDown;
            webView.MouseMove += WebView_MouseMove;
            webView.MouseUp += WebView_MouseUp;
            webView.CoreWebView2InitializationCompleted += WebView_CoreWebView2InitializationCompleted1;

    }

        private void WebView_CoreWebView2InitializationCompleted1(object sender, CoreWebView2InitializationCompletedEventArgs e)
        {
            if (e.IsSuccess)
            {
                webView.CoreWebView2.AddScriptToExecuteOnDocumentCreatedAsync("document.addEventListener('mousedown', function(e) { window.external.notify('mousedown'); });");
                webView.CoreWebView2.AddScriptToExecuteOnDocumentCreatedAsync("document.addEventListener('mouseup', function(e) { window.external.notify('mouseup'); });");
                webView.CoreWebView2.AddHostObjectToScript("external", new ExternalObject(this));

                webView.CoreWebView2.NewWindowRequested += (s, args) => args.Handled = true;
            }
            else
            {
                // Handle initialization failure
            }
        }

        private void WebView_MouseDown(object sender, MouseButtonEventArgs e)
        {
            if (e.ChangedButton == MouseButton.Left)
            {
                isDragging = true;
                startPosition = e.GetPosition(this);
            }
        }

        private void WebView_MouseMove(object sender, MouseEventArgs e)
        {
            if (isDragging)
            {
                Point currentPosition = e.GetPosition(this);
                double deltaX = currentPosition.X - startPosition.X;
                double deltaY = currentPosition.Y - startPosition.Y;

                // 移动WebView2控件
                Canvas.SetLeft(webView, Canvas.GetLeft(webView) + deltaX);
                Canvas.SetTop(webView, Canvas.GetTop(webView) + deltaY);

                startPosition = currentPosition;
            }
        }

        private void WebView_MouseUp(object sender, MouseButtonEventArgs e)
        {
            if (e.ChangedButton == MouseButton.Left)
            {
                isDragging = false;
            }
        }
        private void KeyDown(object sender, KeyEventArgs e)
        {
            DragMove();
        }

        private void WebView2_PreviewDragOver(object sender, DragEventArgs e)
        {
            // 检查拖拽的数据类型，如果是合适的类型，设置拖拽效果为 Copy 或 Move
            //if (e.Data.GetDataPresent(DataFormats.Text))
            //    e.Effects = DragDropEffects.Copy;
            //else
            //    e.Effects = DragDropEffects.None;
            e.Effects = DragDropEffects.All;
            e.Handled = true;
        }

        private void WebView2_Drop(object sender, DragEventArgs e)
        {
            // 获取拖拽的数据
            string draggedText = e.Data.GetData(DataFormats.Text) as string;

            // 在 WebView2 中执行相应的操作，例如插入文本
            webView.ExecuteScriptAsync($"insertText('{draggedText}')");

            e.Handled = true;

        }
        private async void WebView_CoreWebView2InitializationCompleted(object sender, RoutedEventArgs e)
        {
            var userDataFolder = System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "Temp/webview2_temp");
            var environment = await CoreWebView2Environment.CreateAsync(null, userDataFolder);

            await webView.EnsureCoreWebView2Async(environment);
            string htmlContent = @"
                <!DOCTYPE html>
                <html>
                <head>
                    <style>
                        body {
                           background-color: transparent;
                            margin: 0;
                            padding: 0;
                        }
                        .centered-content {
                            display: flex; /* 创建 Flexbox 布局 */
                            justify-content: center; /* 水平居中对齐 */
                            align-items: center; /* 垂直居中对齐 */
                        }
                    </style>
                </head>
                <body>
                   <div class='centered-content'>
                    <img src='https://teammodeltest.blob.core.chinacloudapi.cn/0-public/008.svg' width='450px' alt='Irregular PNG Image'>
                    </div>
                    
                </body>
                </html>";
            //webView.CoreWebView2.Navigate("C:/Users/CrazyIter/Downloads/clock.html");
            webView.CoreWebView2.NavigateToString(htmlContent);
            await webView.CoreWebView2.ExecuteScriptAsync("window.addEventListener('contextmenu', window => {window.preventDefault();});");
          



        }
        private void Window_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            DragMove();
        }

    }
    public class ExternalObject
    {
        private MainWindow mainWindow;

        public ExternalObject(MainWindow window)
        {
            mainWindow = window;
        }

        public void Notify(string message)
        {
            if (message == "mousedown")
            {
                // Handle mouse down event from JavaScript
                mainWindow.Dispatcher.Invoke(() =>
                {
                    if (Mouse.LeftButton == MouseButtonState.Pressed)
                        mainWindow.DragMove();
                });
            }
            else if (message == "mouseup")
            {
                // Handle mouse up event from JavaScript
            }
        }
    }
    public class DragDropHelper
    {
        private MainWindow mainWindow;
        private bool isDragging = false;
        private double offsetX, offsetY;

        public DragDropHelper(MainWindow window)
        {
            mainWindow = window;
        }

        public void onMouseDown(double clientX, double clientY)
        {
            isDragging = true;
            offsetX = clientX - mainWindow.Left;
            offsetY = clientY - mainWindow.Top;
        }

        public void onMouseMove(double clientX, double clientY)
        {
            if (isDragging)
            {
                mainWindow.Left = clientX - offsetX;
                mainWindow.Top = clientY - offsetY;
            }
        }

        public void onMouseUp()
        {
            isDragging = false;
        }
    }
}