Widget _buildOverlay(BuildContext context)
{
D.assert(manifest != null);
shuttle = shuttle ?? manifest.shuttleBuilder(
context,
manifest.animation,
manifest.type,
manifest.fromHero.context,
manifest.toHero.context);
D.assert(shuttle != null);
return(new AnimatedBuilder(
animation: _proxyAnimation,
child: shuttle,
builder: (BuildContext _, Widget child) => {
RenderBox toHeroBox = manifest.toHero.context?.findRenderObject() as RenderBox;
if (_aborted || toHeroBox == null || !toHeroBox.attached)
{
if (_heroOpacity.isCompleted)
{
_heroOpacity = _proxyAnimation.drive(
_reverseTween.chain(
new CurveTween(curve: new Interval(_proxyAnimation.value, 1.0f)))
);
}
}
else if (toHeroBox.hasSize)
{
RenderBox finalRouteBox = manifest.toRoute.subtreeContext?.findRenderObject() as RenderBox;
Offset toHeroOrigin = toHeroBox.localToGlobal(Offset.zero, ancestor: finalRouteBox);
if (toHeroOrigin != heroRectTween.end.topLeft)
{
Rect heroRectEnd = toHeroOrigin & heroRectTween.end.size;
heroRectTween = _doCreateRectTween(heroRectTween.begin, heroRectEnd);
}
}
Rect rect = heroRectTween.evaluate(_proxyAnimation);
Size size = manifest.navigatorRect.size;
RelativeRect offsets = RelativeRect.fromSize(rect, size);
return new Positioned(
top: offsets.top,
right: offsets.right,
bottom: offsets.bottom,
left: offsets.left,
child: new IgnorePointer(
child: new RepaintBoundary(
child: new Opacity(
opacity: _heroOpacity.value,
child: child
)
)
)
);
}
));
}
