/// <summary>
/// Looks for a stack of components under the specified coordinates inside of the parent component
/// Does the top-down processing: from parent to children
/// Returns the top-most rendered component on given coordinates (on a single stage)
/// Notes:
/// 1. The returned list must be refersed in order to get the top component at the beginning of the list!
/// 2. This is a recursive operation
/// </summary>
/// <param name="dlm">Parent component</param>
/// <param name="coords">Coordinates</param>
/// <param name="filter">Filter</param>
/// <param name="stopOnDisabled">Should the process stop if component disabled</param>
/// <param name="stopOnInvisible">Should the process stop if component not visible></param>
/// <param name="list">The list passed by reference</param>
/// <returns></returns>
private static void GetComponentStackUnderCoordinates(DisplayListMember dlm, Point coords, Filter filter, bool stopOnDisabled, bool stopOnInvisible, ref List<DisplayListMember> list)
{
var component = dlm as InteractiveComponent;
//Debug.Log("GetComponentStackUnderCoordinates: " + dlm);
if (null != component)
{
if (stopOnInvisible && !dlm.Visible) // invisible
return;
if (stopOnDisabled && !component.Enabled) // disabled
return;
}
_containsPoint = dlm.ContainsPoint(coords, false);
//Debug.Log(" _containsPoint: " + dlm);
if (_containsPoint && PassesFilter(dlm, filter))
{
//Debug.Log(" PassesFilter: " + dlm);
list.Add(dlm);
}
Group @group = dlm as Group;
// in the case of container check the children
if (null != @group)
{
if (!_containsPoint /*&& container.QClipContent*/)
return;
// the click was inside the container bounds, or container isn't clipping
// check the children for clicks
if (@group.MouseChildren)
{
foreach(DisplayListMember d in @group.QDrawingList)
{
//Component child = d as Component;
//if (null != child)
//{
/* Recursive call! */
//DisplayListMember c = GetComponentUnderCoordinates(d, coords, filter, stopOnDisabled);
GetComponentStackUnderCoordinates(d, coords, filter, stopOnDisabled, stopOnInvisible, ref list);
//Debug.Log(" -> " + c);
//if (null != c)
// list.Add(c);
//}
}
}
}
else // simple component
{
DisplayObjectContainer doc = dlm as DisplayObjectContainer;
// the click was inside the container bounds, or container isn't clipping
// check the children for clicks
if (null != doc && doc.QNumberOfChildren > 0 && doc.MouseChildren)
{
foreach (DisplayListMember d in doc.QDrawingList)
{
GetComponentStackUnderCoordinates(d, coords, filter, stopOnDisabled, stopOnInvisible, ref list);
//DisplayListMember c = GetComponentUnderCoordinates(d, coords, filter, stopOnDisabled);
//if (null != c)
// list.Add(c);
}
}
}
}
/// <summary>
/// Looks for a front-most component inside of the parent component
/// Goes top-down, from parent to children
/// Returns the front-most rendered component on given coordinates (on a single stage)
/// NOTE: RECURSIVE!!!
/// </summary>
/// <param name="dlm"></param>
/// <param name="coords">Coordinates to test</param>
/// <param name="filter">Filter</param>
/// <param name="stopOnDisabled">Should we stop on disabled component</param>
/// <param name="stopOnInvisible">Should we stop on invisible component</param>
/// <returns></returns>
// ReSharper disable SuggestBaseTypeForParameter
private static DisplayListMember GetComponentUnderCoordinates(DisplayListMember dlm, Point coords, Filter filter, bool stopOnDisabled, bool stopOnInvisible)
// ReSharper restore SuggestBaseTypeForParameter
{
//Debug.Log("GetComponentUnderCoordinates: " + dlm);
InteractiveComponent component = dlm as InteractiveComponent;
if (null != component)
{
if (stopOnInvisible && !component.Visible) // invisible
return null;
if (stopOnDisabled && !component.Enabled) // disabled
return null;
}
DisplayListMember output = null;
_containsPoint = dlm.ContainsPoint(coords, false);
if (_containsPoint && PassesFilter(dlm, filter))
{
output = component;
}
GroupBase group = dlm as GroupBase;
if (null != group)
{
if (!_containsPoint && group.ClipAndEnableScrolling)
return output;
if (group.MouseChildren)
{
foreach (DisplayListMember d in group.QDrawingList)
{
/* Recursive call! */
DisplayListMember c = GetComponentUnderCoordinates(d, coords, filter, stopOnDisabled, stopOnInvisible);
if (null != c)
output = c;
}
}
}
else // simple component
{
var doc = dlm as DisplayObjectContainer;
if (null != doc)
{
if (doc.MouseChildren/* && doc.QNumberOfChildren > 0*/)
{
foreach (DisplayListMember d in doc.QDrawingList)
{
/* Recursive call! */
DisplayListMember c = GetComponentUnderCoordinates(d, coords, filter, stopOnDisabled, stopOnInvisible);
if (null != c)
output = c;
}
}
}
}
return output;
}
