private void Canvas_MouseMove(object sender, MouseEventArgs e)
{
if (e.RightButton == MouseButtonState.Pressed)
{
return;
}
if (e.LeftButton == MouseButtonState.Pressed)
{
if (!CanDraw())
{
if (_currentEntry != null && Message.Entries.Contains(_currentEntry))
{
Message.Entries.Remove(_currentEntry);
}
//ApplicationViewModel.Current.IsDrawing = false;
_currentEntry = null;
}
Point currentPoint = e.GetPosition(sender as Canvas);
if (_currentEntry != null)
{
_currentEntry.Points.Add(currentPoint);
}
//if( _currentEntry == null )
//{
// BeginRecording( e.GetPosition( sender as Canvas ) );
//}
}
else if (_currentEntry != null)
{
SendCurrentData();
}
}
public override object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (value == DependencyProperty.UnsetValue)
{
return(null);
}
WhiteboardEntry entry = value as WhiteboardEntry;
PointCollection points = entry.Points;
if (points.Count == 1)
{
points.Add(points[0]);
}
if (entry != null)
{
Polyline line = new Polyline();
line.StrokeThickness = entry.StrokeThickness;
line.Stroke = entry.Stroke;
line.StrokeStartLineCap = PenLineCap.Round;
line.StrokeEndLineCap = PenLineCap.Round;
line.StrokeLineJoin = PenLineJoin.Round;
line.Points = entry.Points;
return(line);
}
return(null);
}
private void SendCurrentData()
{
if (_currentEntry != null && CanDraw())
{
ApplicationViewModel.Current.ChatProxy.SendWhiteboardData(Message, _currentEntry);
//ApplicationViewModel.Current.IsDrawing = false;
_currentEntry = null;
}
}
private void theCanvas_MouseRightButtonDown(object sender, MouseButtonEventArgs e)
{
if (e.RightButton == MouseButtonState.Pressed && _currentEntry != null)
{
Message.Entries.Remove(_currentEntry);
_currentEntry = null;
//ApplicationViewModel.Current.IsDrawing = false;
e.Handled = true;
}
}
private void BeginRecording(Point p)
{
if (CanDraw())
{
_startPoint = p;
Brush brush = ApplicationViewModel.Current.CurrentBrush.Clone();
brush.Opacity = ApplicationViewModel.Current.CurrentOpacity;
_currentEntry = new WhiteboardEntry
{
User = ApplicationViewModel.Current.ChatProxy.CurrentUser,
Points = new PointCollection {
p
},
Stroke = brush,
StrokeThickness = ApplicationViewModel.Current.CurrentThickness,
};
Message.Entries.Add(_currentEntry);
}
}