private DiagramShape _OverlayShape; // What is it that we're using to show where the shape will end up?
#endregion Fields
#region Constructors
public SimpleShapeDragger(DiagramSurface surface, MainWindow window, Point startPoint, DiagramShape originalShape)
: base(surface, window, startPoint)
{
_OriginalShape = originalShape;
SetupMouse();
}
private MultiBinding CreateLeftTopWidthHeightBinding(DiagramShape connectable)
{
// Create a multibinding collection and assign an appropriate converter to it
var multiBinding = new MultiBinding {
Converter = new ConnectorBindingConverter()
};
// Create binding #1 to IConnectable to handle Left
var binding = new Binding {
Source = connectable, Path = new PropertyPath(Canvas.LeftProperty)
};
multiBinding.Bindings.Add(binding);
// Create binding #2 to IConnectable to handle Top
binding = new Binding {
Source = connectable, Path = new PropertyPath(Canvas.TopProperty)
};
multiBinding.Bindings.Add(binding);
// Create binding #3 to IConnectable to handle ActualWidth
binding = new Binding {
Source = connectable, Path = new PropertyPath(ActualWidthProperty)
};
multiBinding.Bindings.Add(binding);
// Create binding #4 to IConnectable to handle ActualHeight
binding = new Binding {
Source = connectable, Path = new PropertyPath(ActualHeightProperty)
};
multiBinding.Bindings.Add(binding);
// Create binding #5 to ConnectionPoint to handle SideOfShape
binding = new Binding {
Source = this, Path = new PropertyPath(SideOfShapeProperty)
};
multiBinding.Bindings.Add(binding);
// Create binding #6 to ConnectionPoint to handle Position
binding = new Binding {
Source = this, Path = new PropertyPath(PositionProperty)
};
multiBinding.Bindings.Add(binding);
return(multiBinding);
}
public ConnectionPoint(DiagramShape parent, SideOfShape side, double position)
{
UID = Guid.NewGuid().ToString();
Side = side;
Position = position;
ParentShape = parent;
SetBinding(LocationProperty,
CreateLeftTopWidthHeightBinding(parent));
// The Fill property must be set to a Brush in order for the shape to be considered solid.
// Otherwise only the edges are considered part of it.
Fill = Brushes.Transparent;
MouseEnter += ConnectionPoint_MouseEnter;
MouseLeave += ConnectionPoint_MouseLeave;
}
public ConnectionPoint(DiagramShape parent, SideOfShape side, double position)
{
UID = Guid.NewGuid().ToString();
Side = side;
Position = position;
ParentShape = parent;
SetBinding(LocationProperty,
CreateLeftTopWidthHeightBinding(parent));
// The Fill property must be set to a Brush in order for the shape to be considered solid.
// Otherwise only the edges are considered part of it.
Fill = Brushes.Transparent;
MouseEnter += ConnectionPoint_MouseEnter;
MouseLeave += ConnectionPoint_MouseLeave;
}
protected override void CreateOverlay()
{
// Add a rectangle to indicate where we'll end up.
// We'll just use an alpha-blended visual brush.
var brush = new VisualBrush(_OriginalShape) { Opacity = 0.2 };
_OverlayShape = new DiagramShape
{
Width = _OriginalShape.RenderSize.Width,
Height = _OriginalShape.RenderSize.Height,
Background = brush,
Content = _OriginalShape.Content
};
Canvas.SetLeft(_OverlayShape, -1000);
Canvas.SetTop(_OverlayShape, -1000);
_Surface.Children.Add(_OverlayShape);
}
public Connection(DiagramShape source, DiagramShape target)
: this()
{
Source = source;
Target = target;
}
public Connection(DiagramShape source, DiagramShape target) : this()
{
Source = source;
Target = target;
}
public void ShapeSetAsPrimary(DiagramShape shape)
{
OnShapeSetAsPrimary.RaiseEvent(this, new GenericEventArgs<DiagramShape>(shape));
}
public void ShapeSelected(DiagramShape entity)
{
OnShapeSelected.RaiseEvent(this, new SchemaEventArgs<DiagramShape>(entity));
}
public void SetVisibility(DiagramShape shape, Visibility visibility)
{
visibleShapes.Remove(shape);
if (visibility == Visibility.Visible)
visibleShapes.Add(shape);
}
public void RemoveShape(DiagramShape shape)
{
Schema.RemoveShape(shape);
shape.Visible = false;
}
public bool CanConnect(DiagramShape shape, DiagramShape sourceShape)
{
return false;
}
public void AddShape(DiagramShape shape)
{
Schema.AddShape(shape);
shape.Visible = false;
}
private MultiBinding CreateLeftTopWidthHeightBinding(DiagramShape connectable)
{
// Create a multibinding collection and assign an appropriate converter to it
var multiBinding = new MultiBinding { Converter = new ConnectorBindingConverter() };
// Create binding #1 to IConnectable to handle Left
var binding = new Binding { Source = connectable, Path = new PropertyPath(Canvas.LeftProperty) };
multiBinding.Bindings.Add(binding);
// Create binding #2 to IConnectable to handle Top
binding = new Binding { Source = connectable, Path = new PropertyPath(Canvas.TopProperty) };
multiBinding.Bindings.Add(binding);
// Create binding #3 to IConnectable to handle ActualWidth
binding = new Binding { Source = connectable, Path = new PropertyPath(ActualWidthProperty) };
multiBinding.Bindings.Add(binding);
// Create binding #4 to IConnectable to handle ActualHeight
binding = new Binding { Source = connectable, Path = new PropertyPath(ActualHeightProperty) };
multiBinding.Bindings.Add(binding);
// Create binding #5 to ConnectionPoint to handle SideOfShape
binding = new Binding { Source = this, Path = new PropertyPath(SideOfShapeProperty) };
multiBinding.Bindings.Add(binding);
// Create binding #6 to ConnectionPoint to handle Position
binding = new Binding { Source = this, Path = new PropertyPath(PositionProperty) };
multiBinding.Bindings.Add(binding);
return multiBinding;
}
public Point Convert(DiagramShape shape, ConnectionPoint connectionPoint)
{
return Convert(Canvas.GetLeft(shape), Canvas.GetTop(shape), shape.ActualWidth, shape.ActualHeight,
connectionPoint.Side, connectionPoint.Position);
}
public Point Convert(DiagramShape shape, SideOfShape side, double position)
{
return Convert(Canvas.GetLeft(shape), Canvas.GetTop(shape), shape.ActualWidth, shape.ActualHeight,
side, position);
}
protected override void RemoveOverlay()
{
_Surface.Children.Remove(_OverlayShape);
_OverlayShape = null;
}