public IMGUI() : base(0)
{
CurrentParent = this;
ActiveComponents.Add(Id, this);
GuiHelper.CurrentIMGUI = this;
}
private void Cleanup()
{
Reset();
foreach (var kc in ActiveComponents.Reverse())
{
if (kc.Value.LastPing != InputHelper.CurrentFrame - 1)
{
Remove(kc.Key, kc.Value);
}
}
CurrentParent = this;
MaxChildren = 0;
ChildrenCount = 0;
Parents.Clear();
_idsUsedThisFrame.Clear();
}
private void Remove(int id, IComponent c)
{
if (Focus == id)
{
Focus = null;
}
ActiveComponents.Remove(id);
if (c.Parent != null)
{
c.Parent.Remove(c);
}
else
{
_children.Remove(c);
}
// TODO: Remove from PendingComponents? Probably not since that case can't happen?
}
public bool TryGetValue(int id, out IComponent c)
{
if (ActiveComponents.TryGetValue(id, out c))
{
return(true);
}
foreach (var pc in PendingComponents)
{
if (pc.Id == id)
{
c = pc.Component;
return(true);
}
}
return(false);
}
public override void UpdateSetup(GameTime gameTime)
{
// 1. Ping ourself to prevent cleanup.
// 2. Cleanup last cycle
// 3. Pending components become active.
// a. Set parenting.
// 4. Update pref sizes.
// 5. Apply pref sizes.
// 6. Update setup.
LastPing = InputHelper.CurrentFrame - 1;
Cleanup();
_idsUsedThisFrame.Add(Id, 1);
while (PendingComponents.Count > 0)
{
var pc = PendingComponents.Dequeue();
if (pc.Component.Parent == null)
{
ActiveComponents.Add(pc.Id, pc.Component);
}
else
{
pc.Component.Parent.Remove(pc.Component);
}
pc.Parent.Add(pc.Component);
pc.Component.GrabFocus = GrabFocus;
}
while (_nextTick.Count > 0)
{
_nextTick.Dequeue().Invoke();
}
foreach (var c in _children)
{
c.UpdatePrefSize(gameTime);
// TODO: Update position?
c.Width = c.PrefWidth;
c.Height = c.PrefHeight;
c.UpdateSetup(gameTime);
}
}