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28 lines
1.2 KiB
Dart
28 lines
1.2 KiB
Dart
import 'package:flutter/widgets.dart';
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/// Widest content span for a surface of [maxWidth]: content is never narrower
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/// than [contentMaxWidth], and the centering margin never exceeds 80dp per
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/// side — so tablets keep near-full-width rows (issue #493) instead of a
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/// fixed 720dp column floating in whitespace.
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double adaptiveContentMaxWidth(
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double maxWidth, {
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double contentMaxWidth = 720,
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}) => maxWidth > contentMaxWidth + 160 ? maxWidth - 160 : contentMaxWidth;
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/// Horizontal inset that centers content of [maxWidth] at
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/// [adaptiveContentMaxWidth]; zero once it fits. Prefer this constraint-based
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/// form when the widget may live inside an already clamped box (e.g. a bottom
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/// sheet), where screen width would over-inset.
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double wideInsetForWidth(double maxWidth, {double contentMaxWidth = 720}) =>
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maxWidth > contentMaxWidth
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? ((maxWidth - contentMaxWidth) / 2).clamp(0.0, 80.0)
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: 0;
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/// Horizontal inset that centers full-width list content on tablets/landscape;
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/// zero on phones, so rows stop stretching across the whole screen.
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double wideListInset(BuildContext context, {double contentMaxWidth = 720}) =>
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wideInsetForWidth(
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MediaQuery.sizeOf(context).width,
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contentMaxWidth: contentMaxWidth,
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);
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