protected override Size OnGetPreferredSize(SizeConstraint w, SizeConstraint h)
{
if (Widget != null)
{
var req = Widget.Surface.GetPreferredSize();
widget_alloc.Width = req.Width;
widget_alloc.Height = req.Height;
}
if (horizontal)
{
Width = Choreographer.PixelCompose(percent, widget_alloc.Width + StartPadding + EndPadding, Easing);
Height = widget_alloc.Height;
}
else
{
Width = widget_alloc.Width;
Height = Choreographer.PixelCompose(percent, widget_alloc.Height + StartPadding + EndPadding, Easing);
}
return(new Size(Width, Height));
}
protected virtual bool OnAnimationActorStep(Actor <BounceFadePopupWidget> actor)
{
if (actor.Expired)
{
OnAnimationCompleted();
return(false);
}
// for the first half, use an easing
if (actor.Percent < 0.5)
{
scale = Choreographer.Compose(actor.Percent * 2, BounceEasing);
opacity = 1.0;
}
//for the second half, vary opacity linearly from 1 to 0.
else
{
scale = Choreographer.Compose(1.0, BounceEasing);
opacity = 1 - 2 * (actor.Percent - 0.5);
}
return(true);
}
bool OnAnimationActorStep(Actor <BounceFadePopupWindow> actor)
{
if (actor.Expired)
{
Destroy();
return(false);
}
// for the first half, use an easing
if (actor.Percent < 0.5)
{
scale = Choreographer.Compose(actor.Percent * 2, BounceEasing);
opacity = 1.0;
}
//for the second half, vary opacity linearly from 1 to 0.
else
{
scale = scale = Choreographer.Compose(1.0, BounceEasing);
opacity = 2.0 - actor.Percent * 2;
}
return(true);
}
protected override void OnSizeRequested(ref Requisition requisition)
{
if (Widget != null)
{
Requisition req = Widget.SizeRequest();
widget_alloc.Width = req.Width;
widget_alloc.Height = req.Height;
}
if (horizontal)
{
Width = Choreographer.PixelCompose(percent, widget_alloc.Width + StartPadding + EndPadding, Easing);
Height = widget_alloc.Height;
}
else
{
Width = widget_alloc.Width;
Height = Choreographer.PixelCompose(percent, widget_alloc.Height + StartPadding + EndPadding, Easing);
}
requisition.Width = Width;
requisition.Height = Height;
}
private void OnBorderIteration(object sender, EventArgs args)
{
if (border_stage.Actor == null)
{
if (border_state == AnimationState.Coming)
{
start_border = start_padding;
end_border = end_padding;
}
else
{
start_border = end_border = 0;
}
border_state = AnimationState.Idle;
}
else
{
double percent = border_state == AnimationState.Coming ? Percent : 1.0 - Percent;
start_border = Choreographer.PixelCompose(percent, start_padding, border_easing);
end_border = Choreographer.PixelCompose(percent, end_padding, border_easing);
}
QueueResizeNoRedraw();
}
