public ResizeHandle(Figure owner, VectorFigure handleShape, float offsetX, float offsetY, ResizeDirections direction)
{
HandleShape = handleShape;
Width = handleShape.Width;
Height = handleShape.Height;
_offsetX = offsetX;
_offsetY = offsetY;
handleShape.IsDragable = false;
handleShape.IsVisible = false;
handleShape.IsSelectable = false;
handleShape.CanBeSnapTarget = false;
Direction = direction;
IsDragable = true;
IsVisible = true;
IsSelectable = true;
CanBeSnapTarget = false;
SetSnapTargets(SnapTargets.Center);
Owner = owner;
Update();
}
public LineHandle(VectorFigure handleShape, int linePointIndex, Line line)
{
_line = line;
Owner = line;
HandleShape = handleShape;
LinePointIndex = linePointIndex;
Width = HandleShape.Width;
Height = handleShape.Height;
Update();
handleShape.IsDragable = false;
handleShape.IsVisible = false;
handleShape.IsSelectable = false;
handleShape.CanBeSnapTarget = false;
IsDragable = true;
IsVisible = true;
IsSelectable = true;
CanBeSnapTarget = false;
SetSnapTargets(SnapTargets.Center);
}
public static Figure AddHandles(this Figure owner, VectorFigure handleShape, params ResizeDirections[] directions)
{
foreach (var direction in directions)
{
owner.AddHandle(new ResizeHandle(owner, handleShape, 0, 0, direction));
}
return(owner);
}
public override bool OnDragStart(Canvas canvas, float x, float y)
{
base.OnDragStart(canvas, x, y);
if (_centerHandle == null)
{
_centerHandle = new Cross(BoundingBox.Center.X, BoundingBox.Center.Y, 10, 10)
{
IsSelectable = false,
IsDragable = false,
FillColor = Colors.Transparent,
CanBeSnapTarget = false
};
canvas.AddFigure(_centerHandle);
}
_centerHandle.BringToFront();
return(true);
}
public GraphVertexHandle(VectorFigure handleShape, GraphNode node, Graph graph)
{
_node = node;
_graph = graph;
HandleShape = handleShape;
Owner = graph;
Width = HandleShape.Width;
Height = handleShape.Height;
Update();
handleShape.IsDragable = false;
handleShape.IsVisible = false;
handleShape.IsSelectable = false;
handleShape.CanBeSnapTarget = false;
IsDragable = true;
IsVisible = true;
IsSelectable = true;
CanBeSnapTarget = false;
SetSnapTargets(SnapTargets.Center);
}
public override void OnDragEnd(Canvas canvas, bool isShiftKey, bool isCtrlKey)
{
base.OnDragEnd(canvas, isShiftKey, isCtrlKey);
canvas.RemoveFigure(_centerHandle);
_centerHandle = null;
}
public virtual void OnDragStart(Canvas canvas, VectorFigure figure, double x, double y)
{
figure.EnableDragFeedback(true);
}
public void OnDragEnd(Canvas canvas, VectorFigure figure, bool isShiftKey, bool isCtrlKey)
{
figure.EnableDragFeedback(false);
}
public virtual void OnDrag(Canvas canvas, VectorFigure figure, double dxSum, double dySum, double dx, double dy, bool isShiftKey,
bool isCtrlKey)
{
}
