Software/Visual_Studio/Tango.SharedUI/ExtensionMethods/FrameworkElementExtensions.cs


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using System;
using System.Collections;
using System.Collections.Generic;
using System.Drawing.Imaging;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Markup;
using System.Windows.Media.Imaging;
using Tango.SharedUI.Controls;
using Tango.SharedUI.Rendering;

public static class FrameworkElementExtensions
{
    /// <summary>
    /// Renders the element to bitmap file.
    /// </summary>
    /// <param name="element">The element.</param>
    /// <param name="filePath">The file path.</param>
    /// <param name="format">The format.</param>
    /// <param name="renderSize">Size of the render.</param>
    /// <param name="quality">The quality.</param>
    public static void RenderToFile(this FrameworkElement element, String filePath, ImageFormat format, Size renderSize, int quality)
    {
        RenderWindow renderer = new RenderWindow(element);
        renderer.RenderToFileSynced(new Size(element.Width, element.Height), renderSize, filePath, format, quality, null);
    }
}

pan> EventHandler<ScreenCaptureFrameReceivedEventArgs> ScreenFrameReceived;

        public IScreenCaptureMethod CaptureMethod { get; set; }
        public CaptureRegion CaptureRegion { get; set; }
        public bool IsStarted { get; set; }
        public TimeSpan Interval { get; set; }
        public bool CaptureCursor { get; set; }
        public bool EnableImageComparison { get; set; }

        public ScreenCaptureEngine()
        {
            Interval = TimeSpan.FromMilliseconds(100);
            CaptureMethod = new GdiScreenCapture();
            CaptureRegion = new CaptureRegion(System.Windows.Forms.Screen.PrimaryScreen.Bounds);
            _comparer = new ImageComparer();
            EnableImageComparison = true;
        }

        public void Start()
        {
            if (_isDisposed)
            {
                throw new ObjectDisposedException("Screen capture engine cannot be started after disposed.");
            }

            if (!IsStarted)
            {
                IsStarted = true;

                _captureThread = new Thread(CaptureThreadMethod);
                _captureThread.IsBackground = true;
                _captureThread.Name = "Screen Capture Thread";
                _captureThread.Start();
            }
        }

        public void Stop()
        {
            if (IsStarted)
            {
                IsStarted = false;
            }
        }

        private void CaptureThreadMethod()
        {
            while (IsStarted)
            {
                var bitmap = CaptureMethod.GetDesktopBitmap(CaptureRegion);

                if (CaptureCursor)
                {
                    using (Graphics g = Graphics.FromImage(bitmap))
                    {
                        CursorUtils.ApplyCursor(g, bitmap, CaptureRegion.Left, CaptureRegion.Top);
                    }
                }

                if (EnableImageComparison)
                {
                    if (_previousBitmap == null)
                    {
                        _previousBitmap = bitmap.Clone() as Bitmap;
                        OnScreenFrameReceived(new ScreenCaptureFrame(bitmap, null));
                    }
                    else
                    {
                        var diffBitmap = _comparer.CreateDifferenceBitmap(_previousBitmap, bitmap, Color.Transparent);
                        _previousBitmap.Dispose();
                        _previousBitmap = bitmap.Clone() as Bitmap;
                        OnScreenFrameReceived(new ScreenCaptureFrame(bitmap, diffBitmap));
                    }
                }
                else
                {
                    OnScreenFrameReceived(new ScreenCaptureFrame(bitmap, null));
                }

                Thread.Sleep(Interval);
            }
        }

        public void Dispose()
        {
            if (!_isDisposed)
            {
                _isDisposed = true;
                Stop();
                CaptureMethod?.Dispose();
            }
        }

        protected virtual void OnScreenFrameReceived(ScreenCaptureFrame frame)
        {
            ScreenFrameReceived?.Invoke(this, new ScreenCaptureFrameReceivedEventArgs()
            {
                Frame = frame,
            });
        }
    }
}