WPFInkCanvas基本操作方法详解

using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.IO;
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.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
 
namespace WPF_InkCanvas
{
  /// 

  /// MainWindow.xaml 的交互逻辑
  /// 
  public partial class MainWindow : Window
  {
    ViewModel viewModel;
    public MainWindow()
    {
      InitializeComponent();
 
      DrawingAttributes drawingAttributes = new DrawingAttributes
      {
        Color = Colors.Red,
        Width = 2,
        Height = 2,
        StylusTip = StylusTip.Rectangle,
        FitToCurve = true,
        IsHighlighter = false,
        IgnorePressure = true,
 
      };
      inkCanvasMeasure.DefaultDrawingAttributes = drawingAttributes;
 
      viewModel = new ViewModel
      {
        MeaInfo = "测试······",
      };
 
      DataCOntext= viewModel;
    }
 
    private void InkCanvasMeasure_MouseDown(object sender, MouseButtonEventArgs e)
    {
 
    }
 
    private void InkCanvasMeasure_MouseMove(object sender, MouseEventArgs e)
    {
 
    }
 
    private void OpenFile_Click(object sender, RoutedEventArgs e)
    {
      OpenFileDialog openDialog = new OpenFileDialog
      {
        Filter = "Image Files (*.jpg)|*.jpg|Image Files (*.png)|*.png|Image Files (*.bmp)|*.bmp",
        Title = "Open Image File"
      };
      if (openDialog.ShowDialog() == true)
      {
        BitmapImage image = new BitmapImage();
        image.BeginInit();
        image.UriSource = new Uri(openDialog.FileName, UriKind.RelativeOrAbsolute);
        image.EndInit();
        imgMeasure.Source = image;
      }
    }
 
    private void RadioButton_Click(object sender, RoutedEventArgs e)
    {
      if ((sender as RadioButton).Content.ToString() == "绘制墨迹")
      {
        inkCanvasMeasure.EditingMode = InkCanvasEditingMode.Ink;
      }
 
      else if ((sender as RadioButton).Content.ToString() == "按点擦除")
      {
        inkCanvasMeasure.EditingMode = InkCanvasEditingMode.EraseByPoint;
      }
 
      else if ((sender as RadioButton).Content.ToString() == "按线擦除")
      {
        inkCanvasMeasure.EditingMode = InkCanvasEditingMode.EraseByStroke;
      }
 
      else if ((sender as RadioButton).Content.ToString() == "选中墨迹")
      {
        inkCanvasMeasure.EditingMode = InkCanvasEditingMode.Select;
      }
 
      else if ((sender as RadioButton).Content.ToString() == "停止操作")
      {
        inkCanvasMeasure.EditingMode = InkCanvasEditingMode.None;
      }
    }
 
    private void SaveInkCanvas_Click(object sender, RoutedEventArgs e)
    {
      FileStream fileStream = new FileStream("inkCanvas.isf", FileMode.Create, FileAccess.ReadWrite);
      inkCanvasMeasure.Strokes.Save(fileStream);
      fileStream.Close();
    }
 
    private void LoadInkCanvas_Click(object sender, RoutedEventArgs e)
    {
      FileStream fileStream = new FileStream("inkCanvas.isf", FileMode.Open, FileAccess.Read);
      inkCanvasMeasure.Strokes = new StrokeCollection(fileStream);
      fileStream.Close();
    }
 
    private void CopyInkCanvas_Click(object sender, RoutedEventArgs e)
    {
      inkCanvasMeasure.CopySelection();
    }
    private void PasteInkCanvas_Click(object sender, RoutedEventArgs e)
    {
      inkCanvasMeasure.Paste();
    }
  }
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
 
namespace WPF_InkCanvas
{
  class ViewModel : INotifyPropertyChanged
  {
    public event PropertyChangedEventHandler PropertyChanged;
 
    protected virtual void OnPropertyChanged(string propertyName = null)
    {
      if (PropertyChanged != null)
        PropertyChanged.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
 
    private string meaInfo;
    public string MeaInfo
    {
      get => meaInfo;
      set
      {
        meaInfo = value;
        OnPropertyChanged("MeaInfo");
      }
    }
  }
}