/// <summary>Sets the parent Screen.</summary>
/// <param name="parent">The parent.</param>
/// <returns><c>true</c> if the parent was changed successfully; otherwise, <c>false</c>.</returns>
public bool SetParent(BrailleIOScreen parent)
{
bool success = false;
if (parent != null)
{
if (parent.GetViewRange(Name) == null || !parent.GetViewRange(Name).Equals(this))
{
parent.AddViewRange(this.Name, this);
}
Parent = parent;
success = true;
firePropertyChangedEvent("Parent");
}
return(success);
}
/// <summary>
/// Gets the view at a position.
/// </summary>
/// <param name="x">The horizontal position on the device.</param>
/// <param name="y">The vertical position on the device.</param>
/// <returns>The topmost view range that containing the point or <c>null</c></returns>
public BrailleIOViewRange GetViewAtPosition(int x, int y)
{
if (x >= 0 || y >= 0)
{
var views = getVisibleViews();
if (views != null && views.Count > 0)
{
var keys = views.Keys;
if (keys != null && keys.Count > 0)
{
var k = keys.ToArray();
for (int i = keys.Count - 1; i >= 0; i--)
{
var view = views[k[i]];
if (view != null)
{
if (view is BrailleIOViewRange)
{
// TODO: check if point is inside
if (((BrailleIOViewRange)view).ContainsPoint(x, y))
{
return((BrailleIOViewRange)view);
}
}
else if (view is BrailleIOScreen)
{
BrailleIOScreen s = (BrailleIOScreen)view;
// get all visible view ranges of the screen
var vv = s.GetVisibleViewRangeAtPosition(x, y);
if (vv != null)
{
return(vv);
}
}
}
}
}
}
}
return(null);
}