wpf 手写签名 并保存成图片 实例源码下载

【实例简介】wpf移动版手写签名例子

【实例截图】

【核心代码】

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.Windows.Shapes;
using System.Windows.Ink;
using System.IO;                   //For : InkCanvas

namespace HandwrittenSignatureDome_WPF
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }
        /// <summary>
        /// 签名之后转换成二进制
        /// </summary>
        private byte[] _getByteHandWritten;

        public byte[] GetByteHandWritten
        {
            get { return _getByteHandWritten; }
            set { _getByteHandWritten = value; }
        }
        //压缩到的宽度
        int _Hwidth = 120;
        /// <summary>
        /// 压缩到的高度
        /// </summary>
        int _HHeigth = 60;
        /// <summary>
        /// 得到手写签名的二进制
        /// </summary>
        /// <param name="getByteHandWritten">签名之后转换成二进制</param>
        /// <param name="Hwidth">压缩的宽度,，不要压缩是0</param>
        /// <param name="HHeigth">压缩的高度不要压缩是0</param>
        public MainWindow(int Hwidth, int HHeigth)
        {
            InitializeComponent();
            if (Hwidth == 0)
            {
                return;
            }
            _Hwidth = Hwidth;
            _HHeigth = HHeigth;

        }


        private void ButtonSave_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                Size size = new Size(this.inkCanvas.ActualWidth, this.inkCanvas.ActualHeight);
                RenderTargetBitmap rt = new RenderTargetBitmap((int)size.Width, (int)size.Height, 96, 96, PixelFormats.Default);
                rt.Render(this.inkCanvas);
                var encoder = new JpegBitmapEncoder();
                encoder.Frames.Add(BitmapFrame.Create(rt));
                string ds = "t"   DateTime.Now.ToShortDateString();
                using (FileStream fileStream = new FileStream(System.AppDomain.CurrentDomain.BaseDirectory   ds, FileMode.Create, FileAccess.ReadWrite))
                {
                    encoder.Save(fileStream);
                    fileStream.Close();
                    fileStream.Dispose();
                }
                OSM_DataUpload.ImageCut imagecut = new OSM_DataUpload.ImageCut();
                if (_Hwidth != 0)
                {

                    _getByteHandWritten = imagecut.ProcessCutImage(ds, _Hwidth, _HHeigth);
                }
                else
                {
                    _getByteHandWritten = imagecut.ProcessCutImage(ds, 509, 250);
                }


            }
            catch
            {
                MessageBox.Show("安装文件访问权限限制");
            }
            this.Close();

        }
        private void ButtonClaer_Click(object sender, RoutedEventArgs e)
        {
            this.inkCanvas.Strokes.Clear();
        }

        private void BtnClose_Click(object sender, RoutedEventArgs e)
        {
            this.Close();
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            //2017-5-4穆慧如添加
            DrawingAttributes drawingAttributes = new DrawingAttributes();
            inkCanvas.DefaultDrawingAttributes = drawingAttributes;
            //设置 DrawingAttributes 的 Color 属性设置颜色  
            drawingAttributes.Color = Colors.Black;//画笔颜色
            drawingAttributes.Height = 8;//画笔粗细
            drawingAttributes.Width = 10;//画笔粗细
            drawingAttributes.FitToCurve = true;
            drawingAttributes.IsHighlighter = false;
            drawingAttributes.IgnorePressure = true;
        }


    }
}