How can I separate widgets on flutter without losing their properties? - flutter

Question

For now I have this
I want to achieve this desing
This is my code:
HomePageTimerUI .dart
class HomePageTimerUI extends StatefulWidget {
const HomePageTimerUI({Key? key}) : super(key: key);
#override
State<HomePageTimerUI> createState() => _HomePageTimerUIState();
}
class _HomePageTimerUIState extends State<HomePageTimerUI>
with TickerProviderStateMixin {
late TabController _tabController;
late Timer timer;
late AnimationController controller;
String get countText {
Duration count = controller.duration! * controller.value;
return controller.isDismissed
? '${controller.duration!.inHours.toString().padLeft(2, '0')}:${(controller.duration!.inMinutes % 60).toString().padLeft(2, '0')}:${(controller.duration!.inSeconds % 60).toString().padLeft(2, '0')}'
: '${count.inHours.toString().padLeft(2, '0')}:${(count.inMinutes % 60).toString().padLeft(2, '0')}:${(count.inSeconds % 60).toString().padLeft(2, '0')}';
}
#override
void initState() {
super.initState();
_tabController = TabController(length: 3, vsync: this);
}
#override
void dispose() {
_tabController.dispose();
super.dispose();
}
void notify() {
if (countText == '00:00:00') {
_tabController.animateTo(1, duration: const Duration(milliseconds: 300));
}
}
#override
Widget build(BuildContext context) {
return Container(
height: 600,
width: double.infinity,
child: DefaultTabController(
length: 3,
child: Scaffold(
appBar: AppBar(
elevation: 0,
backgroundColor: Colors.transparent,
bottom: PreferredSize(
preferredSize: Size.fromHeight(55),
child: Container(
color: Colors.transparent,
child: SafeArea(
child: Column(
children: <Widget>[
TabBar(
controller: _tabController,
indicator: UnderlineTabIndicator(
borderSide: BorderSide(
color: Color(0xff3B3B3B), width: 4.0),
insets: EdgeInsets.fromLTRB(
12.0, 12.0, 12.0, 11.0)),
indicatorWeight: 15,
indicatorSize: TabBarIndicatorSize.label,
labelColor: Color(0xff3B3B3B),
labelStyle: TextStyle(
fontSize: 12,
letterSpacing: 1.3,
fontWeight: FontWeight.w500),
unselectedLabelColor: Color(0xffD7D7D7),
tabs: [
Tab(
text: "POMODORO",
icon: Icon(Icons.work_history, size: 40),
),
Tab(
text: "SHORT BREAK",
icon: Icon(Icons.ramen_dining, size: 40),
),
Tab(
text: "LONG BREAK",
icon: Icon(
Icons.battery_charging_full_rounded,
size: 40),
),
])
],
),
),
),
),
),
body: TabBarView(
controller: _tabController,
children: <Widget>[
Center(
child: StartPomodoro(),
),
// Center(
// child: ShortBreak(),
// ),
// Center(child: LongBreak()),
],
),
bottomNavigationBar: Container(
height: 110,
color: Color(0xffFAFAFA),
child: Padding(
padding: const EdgeInsets.symmetric(
horizontal: 15.0, vertical: 20),
child: GNav(
iconSize: 40,
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
backgroundColor: Color(0xffFAFAFA),
color: Color(0xffD7D7D7),
activeColor: Color(0xff3B3B3B),
tabBackgroundColor: Color(0xffF0F0F0),
gap: 8,
onTabChange: (index) {
print(index);
},
padding: EdgeInsets.all(15),
tabs: [
GButton(
icon: Icons.settings,
text: 'Settings',
),
GButton(
icon: Icons.person,
text: "Profile",
),
GButton(
icon: Icons.task,
text: "Tasks",
),
GButton(
icon: Icons.show_chart,
text: "Performance",
),
],
),
),
),
)));
}
}
startpomodoro.dart
class StartPomodoro extends StatefulWidget {
const StartPomodoro({Key? key}) : super(key: key);
#override
State<StartPomodoro> createState() => _StartPomodoroState();
}
class _StartPomodoroState extends State<StartPomodoro>
with TickerProviderStateMixin {
List<bool> isSelected = [true, false];
late Timer timer;
late AnimationController controller;
String get countText {
Duration count = controller.duration! * controller.value;
return controller.isDismissed
? '${controller.duration!.inHours.toString().padLeft(2, '0')}:${(controller.duration!.inMinutes % 60).toString().padLeft(2, '0')}:${(controller.duration!.inSeconds % 60).toString().padLeft(2, '0')}'
: '${count.inHours.toString().padLeft(2, '0')}:${(count.inMinutes % 60).toString().padLeft(2, '0')}:${(count.inSeconds % 60).toString().padLeft(2, '0')}';
}
double progress = 1.0;
bool LongBreak = true;
void notify() {
if (countText == '00:00:00') {}
}
#override
void initState() {
super.initState();
controller = AnimationController(
vsync: this,
duration: const Duration(seconds: 0),
);
controller.addListener(() {
notify();
if (controller.isAnimating) {
setState(() {
progress = controller.value;
});
} else {
setState(() {
progress = 1.0;
LongBreak = true;
});
}
});
}
#override
void dispose() {
controller.dispose();
super.dispose();
}
#override
Widget build(BuildContext context) {
ThemeData themeData = Theme.of(context);
return Scaffold(
backgroundColor:
LongBreak ? const Color(0xffD94530) : const Color(0xff6351c5),
body: GestureDetector(
onTap: () {
if (controller.isDismissed) {
showModalBottomSheet(
context: context,
builder: (context) => Container(
height: 300,
child: CupertinoTimerPicker(
initialTimerDuration: controller.duration!,
onTimerDurationChanged: (time) {
setState(() {
controller.duration = time;
});
},
),
),
);
}
},
child: AnimatedBuilder(
animation: controller,
builder: (context, child) {
return Stack(
children: <Widget>[
Align(
alignment: Alignment.bottomCenter,
child: Container(
color: const Color(0xffD94530),
height: controller.value *
MediaQuery.of(context).size.height *
0.640,
),
),
Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Expanded(
child: Align(
alignment: Alignment.bottomCenter,
child: Align(
alignment: FractionalOffset.bottomCenter,
child: SingleChildScrollView(
child: Column(
mainAxisAlignment:
MainAxisAlignment.end,
crossAxisAlignment:
CrossAxisAlignment.center,
children: <Widget>[
Text(
countText,
style: const TextStyle(
fontSize: 90.0,
color: Color(0xffFAFAFA),
),
),
],
),
),
),
),
),
Expanded(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment:
CrossAxisAlignment.stretch,
children: [
AnimatedBuilder(
animation: controller,
builder: (context, child) {
return const Padding(
padding: EdgeInsets.symmetric(
vertical: 2.0,
horizontal: 15.0),
);
}),
AnimatedBuilder(
animation: controller,
builder: (context, child) {
return Padding(
padding: const EdgeInsets.symmetric(
vertical: 2.0,
horizontal: 15.0),
child:
FloatingActionButton.extended(
backgroundColor:
const Color(0xffFAFAFA),
onPressed: () {
if (controller
.isAnimating) {
controller.stop();
setState(() {
LongBreak = false;
});
} else {
controller.reverse(
from: controller
.value ==
0
? 1.0
: controller
.value);
setState(() {
LongBreak = false;
});
}
},
icon: Icon(
controller.isAnimating
? Icons.pause
: Icons.play_arrow,
color:
const Color(0xff3B3B3B),
),
label: Text(
controller.isAnimating
? "Pause"
: "Start",
style: const TextStyle(
color: Color(
0xff3B3B3B)),
)),
);
}),
const SizedBox(width: 20, height: 100),
],
),
),
],
),
),
],
);
}),
),
);}
}
class CustomTimerPainter extends CustomPainter {
CustomTimerPainter({
required this.animation,
required this.backgroundColor,
required this.color,
}) : super(repaint: animation);
final Animation<double> animation;
final Color backgroundColor, color;
#override
void paint(Canvas canvas, Size size) {
Paint paint = Paint()
..color = backgroundColor
..strokeWidth = 10.0
..strokeCap = StrokeCap.butt
..style = PaintingStyle.stroke;
canvas.drawCircle(size.center(Offset.zero), size.width / 2.0, paint);
paint.color = color;
double progress = (1.0 - animation.value) * 2 * math.pi;
canvas.drawArc(Offset.zero & size, math.pi * 1.5, -progress, false, paint);
}
#override
bool shouldRepaint(CustomTimerPainter old) {
return animation.value != old.animation.value ||
color != old.color ||
backgroundColor != old.backgroundColor;
}
If I cut and paste the start widget to the HomePageTimerUI I cant do it well because the startpomodoro page has all the controllers to control the timer and animations, so how can I replace the start / pause button to the gnav widget maintaining its height and also initialize the timer?
Thank you for any help you can offer

Answer 1

It's difficult to precisely figure out from the code produced. Because of too many widgets and wrong indentations. I would give suggestions based on rough insights.
If you want to seperate two elements use Spacer that will do the job for you, Otherwise try the following approach.
Present approach (roughly)
Column
|_ Timer Container
|_ Floating button
to
Correct appraoch
Column
|_ Expanded
|_ Center
|_ Timer Container
|_ Floating Button