// Paint control
protected override void OnPaint(PaintEventArgs pe)
{
if ((needSizeUpdate) || (firstFrame))
{
UpdatePosition( );
needSizeUpdate = false;
}
// lock
Monitor.Enter(this);
Graphics g = pe.Graphics;
Rectangle rc = this.ClientRectangle;
Pen pen = new Pen(rectColor, 1);
// draw rectangle
g.DrawRectangle(pen, rc.X, rc.Y, rc.Width - 1, rc.Height - 1);
if (camera != null)
{
try
{
camera.Lock( );
// draw frame
if (camera.LastFrame != null)
{
g.DrawImage(camera.LastFrame, rc.X + 1, rc.Y + 1, rc.Width - 2, rc.Height - 2);
firstFrame = false;
}
else
{
// Create font and brush
Font drawFont = new Font("Arial", 12);
SolidBrush drawBrush = new SolidBrush(Color.White);
g.DrawString("Connecting ...", drawFont, drawBrush, new PointF(5, 5));
drawBrush.Dispose( );
drawFont.Dispose( );
}
}
catch (Exception)
{
}
finally
{
camera.Unlock( );
}
}
pen.Dispose( );
// unlock
Monitor.Exit(this);
base.OnPaint(pe);
}
// Update motion detector
private void SetMotionDetector()
{
Camera camera = cameraWindow.Camera;
if (camera != null)
{
camera.Lock();
camera.MotionDetector = detector;
// reset statistics
statIndex = statReady = 0;
camera.Unlock();
}
}
// Update motion detector
private void SetMotionDetector( )
{
Camera camera = cameraWindow.Camera;
// enable/disable motion alarm
if (detector != null)
{
detector.MotionLevelCalculation = motionAlarmItem.Checked;
}
// set motion detector to camera
if (camera != null)
{
camera.Lock( );
camera.MotionDetector = detector;
// reset statistics
statIndex = statReady = 0;
camera.Unlock( );
}
}
// On new frame
private void Camera_NewFrame(object sender, System.EventArgs e)
{
if ((intervalsToSave != 0) && (saveOnMotion == true))
{
// lets save the frame
if (writer == null)
{
// create file name
DateTime date = DateTime.Now;
String fileName = String.Format("{0}-{1}-{2} {3}-{4}-{5}.avi",
date.Year, date.Month, date.Day, date.Hour, date.Minute, date.Second);
try
{
// create AVI writer
writer = new AVIWriter("wmv3");
// open AVI file
writer.Open(fileName, cameraWindow.Camera.Width, cameraWindow.Camera.Height);
}
catch (ApplicationException)
{
if (writer != null)
{
writer.Dispose( );
writer = null;
}
}
}
// save the frame
Camera camera = cameraWindow.Camera;
camera.Lock( );
writer.AddFrame(camera.LastFrame);
camera.Unlock( );
}
}
