void dragBehavior_Dragging(object sender, System.Windows.Input.MouseEventArgs e)
{
//Vector diff = e.GetPosition(DisplayArea) - mouseStartPosition;
MovableLine line = e.Source as MovableLine;
TranslateTransform frotTrans = line.FrontConnector.RenderTransform as TranslateTransform;
TranslateTransform tailTrans = line.TailConnector.RenderTransform as TranslateTransform;
//if (frotTrans != null)
//{
// frotTrans.X = diff.X;
// frotTrans.Y = diff.Y;
//}
//if (tailTrans != null)
//{
// tailTrans.X = diff.X;
// tailTrans.Y = diff.Y;
//}
}
private void displayArea_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
if (_animationLine == null)
{
return;
}
MovableLine lineTobeAdded = new MovableLine(DisplayArea)
{
Stroke = new SolidColorBrush {
Color = Colors.Black
}, StrokeThickness = 1.5
};
lineTobeAdded.X1 = _animationLine.X1;
lineTobeAdded.Y1 = _animationLine.Y1;
lineTobeAdded.X2 = _animationLine.X2;
lineTobeAdded.Y2 = _animationLine.Y2;
DisplayArea.Children.Add(lineTobeAdded);
DisplayArea.Children.Remove(_animationLine);
_animationLine = null;
lineTobeAdded.VisibleConnectors = true;
Canvas.SetLeft(lineTobeAdded.FrontConnector, lineTobeAdded.X1);
Canvas.SetTop(lineTobeAdded.FrontConnector, lineTobeAdded.Y1);
Canvas.SetLeft(lineTobeAdded.TailConnector, lineTobeAdded.X2);
Canvas.SetTop(lineTobeAdded.TailConnector, lineTobeAdded.Y2);
DisplayArea.Children.Add(lineTobeAdded.FrontConnector);
DisplayArea.Children.Add(lineTobeAdded.TailConnector);
lineTobeAdded.addToDragList(); //Dragging
}
private void addLineToDragList(MovableLine line)
{
}
private void displayArea_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
// Retrieve the coordinate of the mouse position.
mouseStartPosition = e.GetPosition(DisplayArea);
Point pt = e.GetPosition((UIElement)sender);
HitTestResult result = VisualTreeHelper.HitTest(DisplayArea, pt);
if (result.VisualHit is Shape)
{
_label.Text = getLabelText(pt);
return;
}
// Perform the hit test against a given portion of the visual object tree.
if (!(result.VisualHit is Canvas))
{
return;
}
if (_selectedNode == QuadTreeNode.None)
{
return;
}
if (_selectedNode == QuadTreeNode.Arrow)
{
Point P1 = e.GetPosition(DisplayArea);
_animationLine = new MovableLine(DisplayArea)
{
Stroke = new SolidColorBrush {
Color = Colors.Black
}, StrokeThickness = 1.5
};
_animationLine.X1 = P1.X;
_animationLine.Y1 = P1.Y;
DisplayArea.Children.Add(_animationLine);
return;
}
Shape renderShape = new Ellipse()
{
Width = NODE_DIMENSION, Height = NODE_DIMENSION
};
double pointX = e.GetPosition(DisplayArea).X - NODE_DIMENSION / 2;
double pointY = e.GetPosition(DisplayArea).Y - NODE_DIMENSION / 2;
LinearGradientBrush brush = new LinearGradientBrush();
brush.StartPoint = new Point(0, 1);
brush.EndPoint = new Point(1, 1);
if (_selectedNode == QuadTreeNode.Black || _selectedNode == QuadTreeNode.White)
{
Color color = Colors.White;
if (_selectedNode == QuadTreeNode.Black)
{
color = Colors.Black;
}
brush.GradientStops.Add(new GradientStop(color, 1.0));
}
else if (_selectedNode == QuadTreeNode.Gray)
{
brush.GradientStops.Add(new GradientStop(Colors.White, 0.5));
brush.GradientStops.Add(new GradientStop(Colors.Black, 0.5));
Ellipse ellipse = renderShape as Ellipse;
}
renderShape.Fill = brush;
Canvas.SetLeft(renderShape, pointX);
Canvas.SetTop(renderShape, pointY);
DisplayArea.Children.Add(renderShape);
addToDragList(renderShape, new Point(pointX, pointY));
//string strPosition = "X = " + pointX + " ,Y = " + pointY;
//MessageBox.Show(strPosition);
}