private void PlaceThumbs(PathGeometry pathGeometry)
{
foreach (PathFigure figure in pathGeometry.Figures)
{
{
MoveThumb thumb = new MoveThumb();
Canvas.SetLeft(thumb, figure.StartPoint.X);
Canvas.SetTop(thumb, figure.StartPoint.Y);
thumb.Style = FindResource("thumbStyle") as Style;
thumb.Template = FindResource("thumbTemplate") as ControlTemplate;
canvas.Children.Add(thumb);
thumb.DragDelta += Thumb_DragDelta;
thumb.Tag = new ThumbTag()
{
Figure = figure,
IsStartPoint = true
};
}
List <MoveThumb> thumbs = new List <MoveThumb>();
foreach (Point point in (figure.Segments[0] as PolyLineSegment).Points)
{
MoveThumb thumb = new MoveThumb();
Canvas.SetLeft(thumb, point.X);
Canvas.SetTop(thumb, point.Y);
thumb.Style = FindResource("thumbStyle") as Style;
thumb.Template = FindResource("thumbTemplate") as ControlTemplate;
thumb.DragDelta += Thumb_DragDelta;
thumb.Tag = new ThumbTag()
{
Figure = figure,
IsStartPoint = false,
ThumbList = thumbs
};
canvas.Children.Add(thumb);
thumbs.Add(thumb);
}
}
}
private void Thumb_DragDelta(object sender, DragDeltaEventArgs e)
{
MoveThumb thumb = sender as MoveThumb;
if (thumb != null)
{
double newLeft = Canvas.GetLeft(thumb) + e.HorizontalChange;
double newTop = Canvas.GetTop(thumb) + e.VerticalChange;
Canvas.SetLeft(thumb, newLeft);
Canvas.SetTop(thumb, newTop);
ThumbTag tag = (ThumbTag)thumb.Tag;
if (tag.IsStartPoint)
{
tag.Figure.StartPoint = new Point(newLeft, newTop);
}
else
{
int index = tag.ThumbList.IndexOf(thumb);
(tag.Figure.Segments[0] as PolyLineSegment).Points[index] = new Point(newLeft, newTop);
}
//if (index >= 0)
//{
// ((first.Data as PathGeometry).Figures[0].Segments[0] as PolyLineSegment).Points[index] = new Point(newLeft, newTop);
// return;
//}
//index = startThumbs.IndexOf(thumb);
//if (index >= 0)
//{
// (first.Data as PathGeometry).Figures[index].StartPoint = new Point(newLeft, newTop);
// return;
//}
}
}