public void BeginAdd(_Line line)
{
_addLine = line;
this.Visibility = Visibility.Visible;
this.PreviewMouseMove -= AddLinePoint1Canvas_PreviewMouseMove;
this.PreviewMouseLeftButtonUp -= AddLinePoint1Canvas_PreviewMouseLeftButtonUp;
this.PreviewMouseMove -= AddLinePoint2Canvas_PreviewMouseMove;
this.PreviewMouseLeftButtonUp -= AddLinePoint2Canvas_PreviewMouseLeftButtonUp;
this.PreviewMouseMove += AddLinePoint1Canvas_PreviewMouseMove;
this.PreviewMouseLeftButtonUp += AddLinePoint1Canvas_PreviewMouseLeftButtonUp;
}
private Point OnLinePoint2Added(_Line source, Point a, Point b)
{
if (!DesginCanvas.IsAutoAlign)
{
return a;
}
AlignCanvas.Clear();
Point point = new Point(double.NaN, double.NaN);
foreach (UIElement ui in DesginCanvas.Children)
{
if (DesginCanvas.SelectedControls.Contains(ui as _Control))
{
continue;
}
if (ui is _Line)
{
_Line line = ui as _Line;
point = AlignCanvas.MeasurePoint(a, b, new Point(line.Line.X1 + line.Left, line.Line.Y1 + line.Top), new Point(line.Line.X2 + line.Left, line.Line.Y2 + line.Top));
if (!double.IsNaN(point.X))
{
return new Point(point.X - source.Left, point.Y - source.Top);
}
}
else if (ui is _Rectangle)
{
_Control element = ui as _Control;
Point a1 = new Point(element.Left, element.Top);
Point b1 = new Point(element.Left + element.Width, element.Top);
Point c1 = new Point(element.Left + element.Width, element.Top + element.Height);
Point d1 = new Point(element.Left, element.Top + element.Height);
point = AlignCanvas.MeasurePoint(a, b, a1, b1);
if (!double.IsNaN(point.X))
{
return point;
}
else if (!double.IsNaN((point = AlignCanvas.MeasurePoint(a, b1, c1)).X))
{
return point;
}
else if (!double.IsNaN((point = AlignCanvas.MeasurePoint(a, c1, d1)).X))
{
return point;
}
else if (!double.IsNaN((point = AlignCanvas.MeasurePoint(a, d1, a1)).X))
{
return point;
}
}
}
return AlignCanvas.Orthogonal(a, b);
}
private void OnLinePoint2Adding(_Line source, Point a, Point b)
{
if (!DesginCanvas.IsAutoAlign)
{
return;
}
LineAddingMode(source, a, b);
}
private void OnLinePoint1Adding(_Line source, Point a)
{
if (!DesginCanvas.IsAutoAlign)
{
return;
}
List<Point> points = new List<Point>();
foreach (UIElement ui in DesginCanvas.Children)
{
if (DesginCanvas.SelectedControls.Contains(ui as _Control))
{
continue;
}
if (ui is _Line)
{
_Line line = ui as _Line;
Point point = AlignCanvas.MeasurePoint(a, new Point(line.Line.X1 + line.Left, line.Line.Y1 + line.Top), new Point(line.Line.X2 + line.Left, line.Line.Y2 + line.Top));
if (!double.IsNaN(point.X))
{
points.Add(point);
}
}
else if (ui is _Rectangle)
{
_Control element = ui as _Control;
Point a1 = new Point(element.Left, element.Top);
Point b1 = new Point(element.Left + element.Width, element.Top);
Point c1 = new Point(element.Left + element.Width, element.Top + element.Height);
Point d1 = new Point(element.Left, element.Top + element.Height);
Point point = AlignCanvas.MeasurePoint(a, a1, b1);
if (!double.IsNaN(point.X))
{
points.Add(point);
}
else if (!double.IsNaN((point = AlignCanvas.MeasurePoint(a, b1, c1)).X))
{
points.Add(point);
}
else if (!double.IsNaN((point = AlignCanvas.MeasurePoint(a, c1, d1)).X))
{
points.Add(point);
}
else if (!double.IsNaN((point = AlignCanvas.MeasurePoint(a, d1, a1)).X))
{
points.Add(point);
}
}
}
AlignCanvas.DrawAlignPoints(points);
}
public void OnLineMoving(_Line source, Point a, Point b)
{
if (!DesginCanvas.IsAutoAlign)
{
return;
}
a.X += source.Left;
a.Y += source.Top;
b.X += source.Left;
b.Y += source.Top;
LineAddingMode(source, a, b);
}
public LineAdorner(_Line line)
: base(line)
{
_line = line;
}
