public override void DeselectGroupedElements()
{
List <GraphicElement> elementsToRemove = new List <GraphicElement>();
selectedElements.Where(el => el.Parent != null).ForEach(el =>
{
var els = EraseIntersectionsTopToBottom(el);
el.Selected = false;
DrawBottomToTop(els);
UpdateScreen(els);
elementsToRemove.Add(el);
});
elementsToRemove.ForEach(el => selectedElements.Remove(el));
if (selectedElements.Count == 0)
{
ElementSelected.Fire(this, new ElementEventArgs()
{
Element = null
});
}
else
{
// Select the first element.
// TODO: This needs to fire an event that can handle the group of selected elements,
// particularly for PropertyGrid handling.
ElementSelected.Fire(this, new ElementEventArgs()
{
Element = selectedElements[0]
});
}
}
// Deselect all other elements.
public override void SelectOnlyElement(GraphicElement el)
{
List <GraphicElement> intersections = FindAllIntersections(el).ToList();
List <GraphicElement> deselectedElements = new List <GraphicElement>();
selectedElements.Where(e => e != el).ForEach(e =>
{
intersections.AddRange(FindAllIntersections(e));
e.Deselect();
deselectedElements.Add(e);
});
if (!selectedElements.Contains(el))
{
selectedElements.Add(el);
el.Select();
}
deselectedElements.ForEach(e => selectedElements.Remove(e));
EraseTopToBottom(intersections);
DrawBottomToTop(intersections);
UpdateScreen(intersections);
ElementSelected.Fire(this, new ElementEventArgs()
{
Element = el
});
}
public void SelectElement(GraphicElement el)
{
DeselectCurrentSelectedElement();
var els = EraseTopToBottom(el);
el.Selected = true;
DrawBottomToTop(els);
UpdateScreen(els);
selectedElement = el;
ElementSelected.Fire(this, new ElementEventArgs()
{
Element = el
});
}
public override void DeselectCurrentSelectedElements()
{
selectedElements.ForEach(el =>
{
var els = EraseIntersectionsTopToBottom(el);
el.Selected = false;
DrawBottomToTop(els);
UpdateScreen(els);
});
selectedElements.Clear();
ElementSelected.Fire(this, new ElementEventArgs()
{
Element = null
});
}
public override void SelectElement(GraphicElement el)
{
// Add to selected elements only once!
if (!selectedElements.Contains(el))
{
var els = EraseIntersectionsTopToBottom(el);
selectedElements.Add(el);
el.Selected = true;
DrawBottomToTop(els);
UpdateScreen(els);
ElementSelected.Fire(this, new ElementEventArgs()
{
Element = el
});
}
}
protected void OnMouseDown(object sender, MouseEventArgs args)
{
if (args.Button == MouseButtons.Left)
{
leftMouseDown = true;
DeselectCurrentSelectedElement();
SelectElement(args.Location);
selectedAnchor = selectedElement?.GetAnchors().FirstOrDefault(a => a.Near(mousePosition));
ElementSelected.Fire(this, new ElementEventArgs()
{
Element = selectedElement
});
dragging = selectedElement != null;
mousePosition = args.Location;
}
}
public override void SelectElement(GraphicElement el)
{
DeselectCurrentSelectedElement();
if (el != null)
{
var els = EraseIntersectionsTopToBottom(el);
el.Select();
DrawBottomToTop(els);
UpdateScreen(els);
selectedElements.Add(el);
ElementSelected.Fire(this, new ElementEventArgs()
{
Element = el
});
}
}
public override void SelectElement(GraphicElement el)
{
// Add to selected elements only once!
if (!selectedElements.Contains(el))
{
var els = EraseIntersectionsTopToBottom(el);
selectedElements.Add(el);
el.Select();
DrawBottomToTop(els);
UpdateScreen(els);
ElementSelected.Fire(this, new ElementEventArgs()
{
Element = el
});
// Added this to support the NavTo feature, so that the element
// can override this behavior (which is empty in the GraphicElement)
// to do other things AFTER the rendering of the selected element has taken place.
el.ElementSelected();
}
}