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feat: add a grid overview layout #11
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81 changes: 81 additions & 0 deletions
81
packages/flutter_feed_utils/lib/src/widgets/overview_layout.dart
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| import "package:flutter/cupertino.dart"; | ||
| import "package:flutter/material.dart"; | ||
| import "package:flutter/widgets.dart"; | ||
|
|
||
| enum OverviewLayoutOption { | ||
| list, | ||
| grid; | ||
| } | ||
|
|
||
| class OverviewLayout extends StatelessWidget { | ||
| const OverviewLayout._({ | ||
| required OverviewLayoutOption activeLayout, | ||
| required this.items, | ||
| this.columnCount = 1, | ||
| }) : _activeLayout = activeLayout; | ||
|
|
||
| factory OverviewLayout.list({required List<Widget> children}) => | ||
| OverviewLayout._( | ||
| activeLayout: OverviewLayoutOption.list, | ||
| items: children, | ||
| ); | ||
|
|
||
| factory OverviewLayout.grid({ | ||
| required int columnCount, | ||
| required List<Widget> children, | ||
| }) => | ||
| OverviewLayout._( | ||
| activeLayout: OverviewLayoutOption.grid, | ||
| columnCount: columnCount, | ||
| items: children, | ||
| ); | ||
|
|
||
| final List<Widget> items; | ||
| final OverviewLayoutOption _activeLayout; | ||
| final int columnCount; | ||
|
|
||
| @override | ||
| Widget build(BuildContext context) => switch (_activeLayout) { | ||
| OverviewLayoutOption.list => SingleChildScrollView( | ||
| child: Padding( | ||
| padding: const EdgeInsets.symmetric(horizontal: 12.0), | ||
| child: Column( | ||
| crossAxisAlignment: CrossAxisAlignment.start, | ||
| mainAxisSize: MainAxisSize.min, | ||
| children: items, | ||
| ), | ||
| ), | ||
| ), | ||
| OverviewLayoutOption.grid => SingleChildScrollView( | ||
| child: Padding( | ||
| padding: const EdgeInsets.symmetric(horizontal: 12.0), | ||
| child: Column( | ||
| children: [ | ||
| // We use a manual column + wrap approach rather than a | ||
| // gridview as this way we can wrap when the screen becomes | ||
| // too small | ||
| for (var i = 0; i < items.length; i += columnCount) ...[ | ||
| SizedBox( | ||
| width: double.infinity, | ||
| child: Wrap( | ||
| spacing: 8.0, | ||
| runSpacing: 8.0, | ||
| children: [ | ||
| for (var x = 0; x < columnCount; x++) ...[ | ||
| if (i + x < items.length) ...[ | ||
| items[i + x], | ||
| ], | ||
| ], | ||
| ], | ||
| ), | ||
| ), | ||
| if (i + columnCount < items.length) ...[ | ||
| const SizedBox(height: 8.0), | ||
| ], | ||
| ], | ||
| ], | ||
| ), | ||
| ), | ||
| ), | ||
| }; | ||
| } | ||
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I would really prefer if we used a gridview here and simply change the column count based on the size of the screen. The only difficult part is the ability to modify the ratio of the items.