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Code Issues Releases Wiki Activity

clean up expand_card demo

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This commit is contained in:
John Ryan
2019-07-12 12:17:50 -07:00
parent 4e6a0f0e1b
commit d40ba0c98e
1 changed files with 17 additions and 35 deletions
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52
animations/lib/src/misc/expand_card.dart
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@@ -7,17 +7,17 @@ class ExpandCardDemo extends StatelessWidget {
return Scaffold(
appBar: AppBar(),
body: Center(
child: SimpleExpandableCard(),
child: ExpandCard(),
),
);
}
}
class SimpleExpandableCard extends StatefulWidget {
_SimpleExpandableCardState createState() => _SimpleExpandableCardState();
class ExpandCard extends StatefulWidget {
_ExpandCardState createState() => _ExpandCardState();
}
class _SimpleExpandableCardState extends State<SimpleExpandableCard>
class _ExpandCardState extends State<ExpandCard>
with SingleTickerProviderStateMixin {
static const Duration duration = Duration(milliseconds: 300);
bool expanded = false;
@@ -42,39 +42,21 @@ class _SimpleExpandableCardState extends State<SimpleExpandableCard>
alignment: Alignment.center,
duration: duration,
crossFadeState:
expanded ? CrossFadeState.showSecond : CrossFadeState.showFirst,
firstChild: _ImageContainer(
size: size, image: 'assets/wolf.jpg', duration: duration),
secondChild: _ImageContainer(
size: size, image: 'assets/cat.jpg', duration: duration),
),
),
);
}
}
class _ImageContainer extends StatelessWidget {
final double size;
final String image;
final Duration duration;
_ImageContainer({this.size, this.image, this.duration});
Widget build(BuildContext context) {
return Padding(
padding: const EdgeInsets.all(8.0),
child: AnimatedContainer(
duration: duration,
width: size,
height: size,
decoration: BoxDecoration(
color: Colors.transparent,
image: DecorationImage(
fit: BoxFit.cover,
image: AssetImage(image),
expanded ? CrossFadeState.showSecond : CrossFadeState.showFirst,
firstChild: AnimatedContainer(
duration: duration,
width: size,
height: size,
child: Image.asset('assets/cat.jpg', fit: BoxFit.cover,),
),
secondChild: AnimatedContainer(
duration: duration,
width: size,
height: size,
child: Image.asset('assets/wolf.jpg', fit: BoxFit.cover,),
),
),
),
);
}
}
}