public StrokeAnchorPointThumb(ShapeStroke stroke, CustomInkCanvas canvas, int number) : base()
{
this.stroke = stroke;
this.canvas = canvas;
this.number = number;
}
void dragHandle_DragCompleted(object sender,
DragCompletedEventArgs e)
{
Point actualPos = Mouse.GetPosition(this);
if (actualPos.X < 0 || actualPos.Y < 0)
{
visualChildren.Remove(linkPreview);
InvalidateArrange();
return;
}
ShapeStroke strokeTo = null;
int number = 0;
foreach (UIElement thumb in canvas.Children)
{
if (thumb.GetType() == typeof(StrokeAnchorPointThumb))
{
Point thumbPosition = thumb.TransformToAncestor(canvas).Transform(new Point(0, 0));
StrokeAnchorPointThumb cheatThumb = thumb as StrokeAnchorPointThumb;
double y = thumbPosition.Y - actualPos.Y;
double x = thumbPosition.X - actualPos.X;
double distBetweenPoints = (Math.Sqrt(Math.Pow(x, 2) + Math.Pow(y, 2)));
if (distBetweenPoints <= 10)
{
strokeTo = cheatThumb.stroke as ShapeStroke;
actualPos = thumbPosition;
number = cheatThumb.number;
}
}
}
int linkAnchorNumber = 0;
if (sender as Thumb == anchors[1])
{
linkAnchorNumber = 1;
}
if (sender as Thumb == anchors[2])
{
linkAnchorNumber = 2;
}
if (sender as Thumb == anchors[3])
{
linkAnchorNumber = 3;
}
Point pos = (sender as Thumb).TransformToAncestor(canvas).Transform(new Point(0, 0));
pos.X += 5;
pos.Y += 5;
if (shapeStroke is ActorStroke)
{
if (strokeTo is ActivityStroke)
{
CreateLink(actualPos, strokeTo, number, linkAnchorNumber, LinkTypes.ONE_WAY_ASSOCIATION, pos);
}
else
{
ShowMessage("A role can only be linked to an activity.");
}
}
else if (shapeStroke is ArtifactStroke)
{
if (strokeTo is ActivityStroke)
{
CreateLink(actualPos, strokeTo, number, linkAnchorNumber, LinkTypes.ONE_WAY_ASSOCIATION, pos);
}
else
{
ShowMessage("An artifact can only be linked to an activity.");
}
}
else if (shapeStroke is ActivityStroke)
{
if (strokeTo is ArtifactStroke)
{
CreateLink(actualPos, strokeTo, number, linkAnchorNumber, LinkTypes.ONE_WAY_ASSOCIATION, pos);
}
else
{
ShowMessage("An activity can only be linked to an artifact.");
}
}
else if (strokeTo != null && strokeTo.isProccessStroke())
{
ShowMessage("A role, an artifact or a role cannot be linked to nothing.");
}
else
{
CreateLink(actualPos, strokeTo, number, linkAnchorNumber, LinkTypes.LINE, pos);
}
visualChildren.Remove(linkPreview);
StrokeCollection selectedStrokes = new StrokeCollection {
canvas.GetSelectedStrokes()
};
canvas.Select(new StrokeCollection {
});
canvas.Select(selectedStrokes);
InvalidateArrange();
}