private void Canvas_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
if (line && e.LeftButton == MouseButtonState.Released)
{
currentPosition = new Point(0, 0);
List <UIElement> copy = new List <UIElement>();
copy.AddRange(HistoryElement);
History.Add(copy);
HistoryElement.Clear();
UndoButton.IsEnabled = (UndoList.Count <= 0);
}
if (rectangle && e.LeftButton == MouseButtonState.Released)
{
HistoryElement.Add(_rectangle);
_rectangle = new Rectangle();
List <UIElement> copy = new List <UIElement>();
copy.AddRange(HistoryElement);
History.Add(copy);
HistoryElement.Clear();
UndoButton.IsEnabled = (UndoList.Count <= 0);
}
if (ellipse && e.LeftButton == MouseButtonState.Released)
{
HistoryElement.Add(_ellipse);
_ellipse = new Ellipse();
List <UIElement> copy = new List <UIElement>();
copy.AddRange(HistoryElement);
History.Add(copy);
HistoryElement.Clear();
UndoButton.IsEnabled = (UndoList.Count <= 0);
}
if (triangle && e.LeftButton == MouseButtonState.Released)
{
HistoryElement.Add(_triangle);
_triangle = new Polygon();
List <UIElement> copy = new List <UIElement>();
copy.AddRange(HistoryElement);
History.Add(copy);
HistoryElement.Clear();
UndoButton.IsEnabled = (UndoList.Count <= 0);
}
}
private void Canvas_MouseMove(object sender, System.Windows.Input.MouseEventArgs e)
{
if (line && e.LeftButton == MouseButtonState.Pressed)
{
_line = new Line();
_line.Stroke = Color;
_line.StrokeStartLineCap = PenLineCap.Round;
_line.StrokeEndLineCap = PenLineCap.Round;
_line.StrokeThickness = Thickness;
_line.X1 = currentPosition.X;
_line.Y1 = currentPosition.Y - 80;
_line.X2 = e.GetPosition(this).X;
_line.Y2 = e.GetPosition(this).Y - 80;
currentPosition = e.GetPosition(this);
Canvas.Children.Add(_line);
HistoryElement.Add(_line);
}
if (rectangle && e.LeftButton == MouseButtonState.Pressed)
{
_rectangle.Stroke = Color;
_rectangle.StrokeThickness = Thickness;
if ((bool)fill)
{
_rectangle.Fill = Color;
}
Canvas.SetLeft(_rectangle, currentPosition.X);
Canvas.SetTop(_rectangle, currentPosition.Y);
var pos = e.GetPosition(Canvas);
var x = Math.Min(pos.X, currentPosition.X);
var y = Math.Min(pos.Y, currentPosition.Y);
var w = Math.Max(pos.X, currentPosition.X) - x;
var h = Math.Max(pos.Y, currentPosition.Y) - y;
_rectangle.Width = w;
_rectangle.Height = h;
Canvas.SetLeft(_rectangle, x);
Canvas.SetTop(_rectangle, y);
}
if (ellipse && e.LeftButton == MouseButtonState.Pressed)
{
_ellipse.Stroke = Color;
_ellipse.StrokeThickness = Thickness;
if ((bool)fill)
{
_ellipse.Fill = Color;
}
Canvas.SetLeft(_ellipse, currentPosition.X);
Canvas.SetTop(_ellipse, currentPosition.Y);
var pos = e.GetPosition(Canvas);
var x = Math.Min(pos.X, currentPosition.X);
var y = Math.Min(pos.Y, currentPosition.Y);
var w = Math.Max(pos.X, currentPosition.X) - x;
var h = Math.Max(pos.Y, currentPosition.Y) - y;
_ellipse.Width = w;
_ellipse.Height = h;
Canvas.SetLeft(_ellipse, x);
Canvas.SetTop(_ellipse, y);
}
if (triangle && e.LeftButton == MouseButtonState.Pressed)
{
_triangle.Stroke = Color;
_triangle.StrokeThickness = Thickness;
if ((bool)fill)
{
_triangle.Fill = Color;
}
Canvas.SetLeft(_triangle, currentPosition.X);
Canvas.SetTop(_triangle, currentPosition.Y);
var pos = e.GetPosition(Canvas);
Point p1 = new Point(0, pos.Y - currentPosition.Y);
Point p2 = new Point(pos.X - currentPosition.X, pos.Y - currentPosition.Y);
Point p3 = new Point((pos.X - currentPosition.X) / 2, 0);
_triangle.Points[0] = p1;
_triangle.Points[1] = p2;
_triangle.Points[2] = p3;
Canvas.SetLeft(_triangle, currentPosition.X);
Canvas.SetTop(_triangle, currentPosition.Y);
}
}
