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<topic_start>
|
Example 19
|
<code_start>
|
const Center(
|
child: FittedBox(
|
child: Text('Some Example Text.'),
|
),
|
)
|
<code_end>
|
But what happens if you put the FittedBox inside of a
|
Center widget? The Center lets the FittedBox
|
be any size it wants, up to the screen size.
|
The FittedBox then sizes itself to the Text,
|
and lets the Text be any size it wants.
|
Since both FittedBox and the Text have the same size,
|
no scaling happens.
|
<topic_end>
|
<topic_start>
|
Example 20
|
<code_start>
|
const Center(
|
child: FittedBox(
|
child: Text(
|
'This is some very very very large text that is too big to fit a regular screen in a single line.'),
|
),
|
)
|
<code_end>
|
However, what happens if FittedBox is inside of a Center
|
widget, but the Text is too large to fit the screen?
|
FittedBox tries to size itself to the Text,
|
but it can’t be bigger than the screen.
|
It then assumes the screen size,
|
and resizes Text so that it fits the screen, too.
|
<topic_end>
|
<topic_start>
|
Example 21
|
<code_start>
|
const Center(
|
child: Text(
|
'This is some very very very large text that is too big to fit a regular screen in a single line.'),
|
)
|
<code_end>
|
If, however, you remove the FittedBox, the Text
|
gets its maximum width from the screen,
|
and breaks the line so that it fits the screen.
|
<topic_end>
|
<topic_start>
|
Example 22
|
<code_start>
|
FittedBox(
|
child: Container(
|
height: 20,
|
width: double.infinity,
|
color: Colors.red,
|
),
|
)
|
<code_end>
|
FittedBox can only scale a widget that is bounded
|
(has non-infinite width and height). Otherwise,
|
it won’t render anything,
|
and you’ll see an error in the console.
|
<topic_end>
|
<topic_start>
|
Example 23
|
<code_start>
|
Row(
|
children: [
|
Container(color: red, child: const Text('Hello!', style: big)),
|
Container(color: green, child: const Text('Goodbye!', style: big)),
|
],
|
)
|
<code_end>
|
The screen forces the Row to be exactly the same size
|
as the screen.
|
Just like an UnconstrainedBox, the Row won’t
|
impose any constraints onto its children,
|
and instead lets them be any size they want.
|
The Row then puts them side-by-side,
|
and any extra space remains empty.
|
<topic_end>
|
<topic_start>
|
Example 24
|
<code_start>
|
Row(
|
children: [
|
Container(
|
color: red,
|
child: const Text(
|
'This is a very long text that '
|
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