void IEventPortal.PortalMouseDown(UIMouseDownEventArgs e)
{
//find hit svg graphics....
VgHitChain hitChain = GetFreeHitChain();
hitChain.SetRootGlobalPosition(e.X, e.Y);
//1. hit test
HitTestCore(this.SvgRoot.SvgDoc.Root, hitChain, e.X, e.Y);
SetEventOrigin(e, hitChain);
//2. propagate event portal
ForEachOnlyEventPortalBubbleUp(e, hitChain, portal =>
{
portal.PortalMouseDown(e);
return(true);
});
if (!e.CancelBubbling)
{
//2. propagate events
ForEachSvgElementBubbleUp(e, hitChain, () =>
{
//-------
//temp test only
//-------
var svgElement = e.ExactHitObject as SvgElement;
//if (svgElement is SvgRect)
//{
// ((SvgRect)svgElement).FillColor = Color.White;
//}
return(true);
});
}
e.CancelBubbling = true;
ReleaseHitChain(hitChain);
}
void IEventPortal.PortalMouseUp(UIMouseUpEventArgs e)
{
//find hit svg graphics....
VgHitChain hitChain = GetFreeHitChain();
hitChain.SetRootGlobalPosition(e.X, e.Y);
//1. hit test
HitTestCore(this.SvgRoot.SvgDoc.Root, hitChain, e.X, e.Y);
SetEventOrigin(e, hitChain);
//2. propagate event portal
ForEachOnlyEventPortalBubbleUp(e, hitChain, (portal) =>
{
portal.PortalMouseUp(e);
return(true);
});
if (!e.CancelBubbling)
{
//2. propagate events
ForEachEventListenerBubbleUp(e, hitChain, () =>
{
e.CurrentContextElement.ListenMouseUp(e);
return(true);
});
}
e.CancelBubbling = true;
ReleaseHitChain(hitChain);
}
static void SetEventOrigin(UIEventArgs e, VgHitChain hitChain)
{
int count = hitChain.Count;
if (count > 0)
{
VgHitInfo hitInfo = hitChain.GetHitInfo(count - 1);
e.SetExactHitObject(hitInfo);
}
}
static void ForEachSvgElementBubbleUp(UIEventArgs e, VgHitChain hitChain, System.Func <bool> listenerAction)
{
for (int i = hitChain.Count - 1; i >= 0; --i)
{
//propagate up
var hitInfo = hitChain.GetHitInfo(i);
//---------------------
//hit on element
e.SetLocation((int)hitInfo.x, (int)hitInfo.y);
if (listenerAction())
{
return;
}
}
}
static void ForEachOnlyEventPortalBubbleUp(UIEventArgs e, VgHitChain hitPointChain, System.Func<IEventPortal, bool> eventPortalAction)
{
//only listener that need tunnel down
for (int i = hitPointChain.Count - 1; i >= 0; --i)
{
//propagate up
VgHitInfo hitInfo = hitPointChain.GetHitInfo(i);
if (hitInfo.hitElem.GetController() is SvgElement svg &&
SvgElement.UnsafeGetController(svg) is IEventPortal controller)
{
e.SetLocation((int)hitInfo.x, (int)hitInfo.y);
if (eventPortalAction(controller))
{
return;
}
}
}
}
static void ForEachEventListenerBubbleUp(UIEventArgs e, VgHitChain hitChain, System.Func <bool> listenerAction)
{
for (int i = hitChain.Count - 1; i >= 0; --i)
{
//propagate up
VgHitInfo hitInfo = hitChain.GetHitInfo(i);
IUIEventListener controller = SvgElement.UnsafeGetController(hitInfo.GetSvgElement()) as IUIEventListener;
//switch (hitInfo.hitObjectKind)
//{
// default:
// {
// continue;
// }
// case HitObjectKind.Run:
// {
// CssRun run = (CssRun)hitInfo.hitObject;
// controller = CssBox.UnsafeGetController(run.OwnerBox) as IEventListener;
// } break;
// case HitObjectKind.CssBox:
// {
// CssBox box = (CssBox)hitInfo.hitObject;
// controller = CssBox.UnsafeGetController(box) as IEventListener;
// } break;
//}
//---------------------
if (controller != null)
{
//found controller
e.SetCurrentContextElement(controller);
e.SetLocation((int)hitInfo.x, (int)hitInfo.y);
if (listenerAction())
{
return;
}
}
}
}
static void ForEachOnlyEventPortalBubbleUp(UIEventArgs e, VgHitChain hitPointChain, EventPortalAction eventPortalAction)
{
//only listener that need tunnel down
for (int i = hitPointChain.Count - 1; i >= 0; --i)
{
//propagate up
var hitInfo = hitPointChain.GetHitInfo(i);
SvgElement svg = hitInfo.hitElem.GetController() as SvgElement;
if (svg != null)
{
var controller = SvgElement.UnsafeGetController(svg) as IEventPortal;
if (controller != null)
{
e.SetLocation((int)hitInfo.x, (int)hitInfo.y);
if (eventPortalAction(controller))
{
return;
}
}
}
}
}
public static void HitTestCore(SvgElement root, VgHitChain chain, float x, float y)
{
////1.
//chain.AddHit(root, x, y);
////2. find hit child
//int j = root.ChildCount;
//for (int i = 0; i < j; ++i)
//{
//}
//var child = root.GetFirstNode();
//TODO: review here again!
// throw new System.NotImplementedException();
//TODO: check hit test core on svg again!
//while (child != null)
//{
// //test hit text core again
// var node = child.Value;
// if (node.HitTestCore(chain, x, y))
// {
// break;
// }
// child = child.Next;
//}
}
void IEventPortal.PortalMouseMove(UIMouseMoveEventArgs e)
{
int x = e.X;
int y = e.Y;
if (e.IsDragging)
{
//dragging *** , if changed
//handle mouse drag
VgHitChain hitChain = GetFreeHitChain();
hitChain.SetRootGlobalPosition(x, y);
HitTestCore(this.SvgRoot.SvgDoc.Root, hitChain, e.X, e.Y);
SetEventOrigin(e, hitChain);
//---------------------------------------------------------
//propagate mouse drag
ForEachOnlyEventPortalBubbleUp(e, hitChain, (portal) =>
{
portal.PortalMouseMove(e);
return(true);
});
//---------------------------------------------------------
if (!e.CancelBubbling)
{
//clear previous svg selection
ClearPreviousSelection();
//if (hitChain.Count > 0)
//{
// //create selection range
// _htmlContainer.SetSelection(new SelectionRange(
// _latestMouseDownChain,
// hitChain,
// this.ifonts));
//}
//else
//{
// _htmlContainer.SetSelection(null);
//}
ForEachEventListenerBubbleUp(e, hitChain, () =>
{
e.CurrentContextElement.ListenMouseMove(e);
return(true);
});
}
//---------------------------------------------------------
ReleaseHitChain(hitChain);
}
else
{
//mouse move
//---------------------------------------------------------
VgHitChain hitChain = GetFreeHitChain();
hitChain.SetRootGlobalPosition(x, y);
HitTestCore(this.SvgRoot.SvgDoc.Root, hitChain, e.X, e.Y);
SetEventOrigin(e, hitChain);
//---------------------------------------------------------
ForEachOnlyEventPortalBubbleUp(e, hitChain, (portal) =>
{
portal.PortalMouseMove(e);
return(true);
});
//---------------------------------------------------------
if (!e.CancelBubbling)
{
ForEachEventListenerBubbleUp(e, hitChain, () =>
{
e.CurrentContextElement.ListenMouseMove(e);
return(true);
});
}
ReleaseHitChain(hitChain);
}
}
void ReleaseHitChain(VgHitChain hitChain)
{
hitChain.Clear();
this.hitChainPools.Push(hitChain);
}
