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   源码介绍

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
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.Navigation;
using System.Net;
using System.Threading.Tasks;
using System.Diagnostics;
using System.IO;
using System.Reflection;

namespace Editor
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        string version = Assembly.GetEntryAssembly().GetName().Version.ToString();

        public MainWindow()
        {
            InitializeComponent();
            mathToolBar.CommandCompleted  = (x, y) => { editor.Focus(); };
            SetTitle();
            AddHandler(UIElement.MouseDownEvent, new MouseButtonEventHandler(MainWindow_MouseDown), true);
            underbarToggle.IsChecked = true;
        }

        public void HandleToolBarCommand(CommandDetails commandDetails)
        {
            editor.HandleUserCommand(commandDetails);
        }

        private void MainWindow_MouseDown(object sender, MouseButtonEventArgs e)
        {
            if (Mouse.DirectlyOver != null)
            {
                if (Mouse.DirectlyOver.GetType() == typeof(EditorToolBarButton))
                {
                    return;
                }
                else if (editor.IsMouseOver)
                {
                    //editor.HandleMouseDown();
                    editor.Focus();
                }
                mathToolBar.HideVisiblePanel();
            }
        }

        private void Window_TextInput(object sender, TextCompositionEventArgs e)
        {
            if (!editor.IsFocused)
            {
                editor.Focus();
                editor.ConsumeText(e.Text);
                mathToolBar.HideVisiblePanel();
            }
        }

        private void CloseCommandHandler(object sender, ExecutedRoutedEventArgs e)
        {
            this.Close();
        }
        
        void SetTitle()
        {
           Title = "Math Editor Mini v."   version;
        }

        string ShowSaveFileDialog(string extension, string filter)
        {
            Microsoft.Win32.SaveFileDialog sfd = new Microsoft.Win32.SaveFileDialog();
            sfd.DefaultExt = "."   extension;
            sfd.Filter = filter;
            bool? result = sfd.ShowDialog();
            if (result == true)
            {
                return Path.GetExtension(sfd.FileName) == "."   extension ? sfd.FileName : sfd.FileName   "."   extension;
            }
            else
            {
                return null;
            }
        }
        
        private void exportMenuItem_Click(object sender, RoutedEventArgs e)
        {
            string imageType = (string)((Control)sender).Tag ?? "png";
            string fileName = ShowSaveFileDialog(imageType, string.Format("Image File (*.{0})|*.{0}", imageType));
            if (!string.IsNullOrEmpty(fileName))
            {
                string ext = Path.GetExtension(fileName);
                if (ext != "."   imageType)
                    fileName  = "."   imageType;
                editor.ExportImage(fileName);
            }
        }               

        private void ToolBar_Loaded(object sender, RoutedEventArgs e)
        {
            ToolBar toolBar = sender as ToolBar;
            var overflowGrid = toolBar.Template.FindName("OverflowGrid", toolBar) as FrameworkElement;
            if (overflowGrid != null)
            {
                overflowGrid.Visibility = Visibility.Collapsed;
            }
        }

        private void underbarToggleCheckChanged(object sender, RoutedEventArgs e)
        {
            editor.ShowOverbar(underbarToggle.IsChecked == true);
        }

        private void IncreaseZoomCommandHandler(object sender, ExecutedRoutedEventArgs e)
        {
            editor.ZoomIn();
        }

        private void DecreaseZoomCommandHandler(object sender, ExecutedRoutedEventArgs e)
        {
            editor.ZoomOut();
        }

        private void contentsMenuItem_Click(object sender, RoutedEventArgs e)
        {
            Process.Start("http://mathiversity.com/MathEditor/Documentation");
        }

        private void aboutMenuItem_Click(object sender, RoutedEventArgs e)
        {
            MessageBox.Show("Math Editor Mini version "   version   Environment.NewLine   Environment.NewLine  
                            "\u00A9 2013 Kashif Imran", "About Math Editor Mini");
        }        
        
        private void Window_KeyDown(object sender, KeyEventArgs e)
        {
            if (!editor.IsFocused)
            {
                editor.Focus();
                mathToolBar.HideVisiblePanel();
            }
        }
        
        private void supportMenuItem_Click(object sender, RoutedEventArgs e)
        {
            Process.Start("http://forum.mathiversity.com/");
        }
         
        private void scrollViwer_ScrollChanged(object sender, ScrollChangedEventArgs e)
        {
            editor.InvalidateVisual();
        }

        private void meLinkClick(object sender, RoutedEventArgs e)
        {
            Process.Start("http://mathiversity.com/MathEditor");
        }
    }
}