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Ekhlass
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flutter_docs

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372
title: 'flutter layout article',
home: SafeArea(
child: material(
color: colors.black,
child: FittedBox(
child: container(
width: 400,
height: 670,
color: const Color(0xFFCCCCCC),
child: column(
crossAxisAlignment: CrossAxisAlignment.center,
children: [
expanded(
child: ConstrainedBox(
constraints: const BoxConstraints.tightFor(
width: double.infinity, height: double.infinity),
child: widget.examples[count - 1])),
container(
height: 50,
width: double.infinity,
color: colors.black,
child: SingleChildScrollView(
scrollDirection: axis.horizontal,
child: row(
mainAxisSize: MainAxisSize.min,
children: [
for (int i = 0; i < widget.examples.length; i++)
container(
width: 58,
padding: const EdgeInsets.only(left: 4, right: 4),
child: button(i + 1),
),
],
),
),
),
container(
height: 273,
color: colors.grey[50],
child: scrollbar(
child: SingleChildScrollView(
key: ValueKey(count),
child: padding(
padding: const EdgeInsets.all(10),
child: column(
children: [
center(child: text(code)),
const SizedBox(height: 15),
text(
explanation,
style: TextStyle(
color: colors.blue[900],
fontStyle: FontStyle.italic),
),
],
),
),
),
),
),
],
),
),
),
),
),
);
}
widget button(int exampleNumber) {
return button(
key: ValueKey('button$exampleNumber'),
isSelected: count == exampleNumber,
exampleNumber: exampleNumber,
onPressed: () {
showExample(
exampleNumber,
widget.examples[exampleNumber - 1].code,
widget.examples[exampleNumber - 1].explanation,
);
},
);
}
void showExample(int exampleNumber, string code, string explanation) {
setState(() {
count = exampleNumber;
this.code = code;
this.explanation = explanation;
});
}
}
//////////////////////////////////////////////////
class button extends StatelessWidget {
final bool isSelected;
final int exampleNumber;
final VoidCallback onPressed;
const button({
super.key,
required this.isSelected,
required this.exampleNumber,
required this.onPressed,