//TODO: Maybe user should send these events to the view manually,
//that way they'd be able to pick and choose/control its input.
//They could also "simulate" interacting with UI, which would be cool.
public void Update()
{
bool hoverPrev = MouseOverPrev;
bool hoverCurr = MouseOver;
if (Mouse.Position != Mouse.LastPosition)
{
DoMouseMove();
Dragging?.DoDragUpdate();
}
if (hoverCurr)
{
if (Mouse.LeftPressed)
{
DoMouseDown(MouseButton.Left);
Dragging?.DoDragStart();
}
else if (Mouse.MiddlePressed)
{
DoMouseDown(MouseButton.Middle);
}
else if (Mouse.RightPressed)
{
DoMouseDown(MouseButton.Right);
}
if (Mouse.LeftReleased)
{
DoMouseUp(MouseButton.Left);
Dragging?.DoDragEnd();
DoDrop(Dragging);
Dragging = null;
leftClick?.DoClick(MouseButton.Left);
leftClick = null;
}
else if (Mouse.MiddleReleased)
{
DoMouseUp(MouseButton.Middle);
middleClick?.DoClick(MouseButton.Middle);
middleClick = null;
}
else if (Mouse.RightReleased)
{
DoMouseUp(MouseButton.Right);
rightClick?.DoClick(MouseButton.Right);
rightClick = null;
}
if (Mouse.Scroll != Point2.Zero)
{
DoScroll();
}
}
OnUpdate?.Invoke();
}
internal override void DoDrop(GuiElement elem)
{
base.DoDrop(elem);
if (MouseEnabled && MouseChildren)
{
foreach (var child in Children)
{
if (child.Enabled && child.MouseOver)
{
child.DoDrop(elem);
}
}
}
}
internal virtual void DoDrop(GuiElement elem)
{
OnDrop?.Invoke(elem);
}