add breakpoint package

2026-01-14 00:42:24 -08:00
parent ea1891aa10
commit b7f99e2ce9
97 changed files with 57826 additions and 0 deletions
@@ -0,0 +1,74 @@
+import 'dart:io';
+
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+import 'package:breakpoint/breakpoint.dart';
+
+/// main is entry point of Flutter application
+void main() {
+  // Desktop platforms aren't a valid platform.
+  if (!kIsWeb) _setTargetPlatformForDesktop();
+  return runApp(MyApp());
+}
+
+/// If the current platform is desktop, override the default platform to
+/// a supported platform (iOS for macOS, Android for Linux and Windows).
+/// Otherwise, do nothing.
+void _setTargetPlatformForDesktop() {
+  TargetPlatform targetPlatform;
+  if (Platform.isMacOS) {
+    targetPlatform = TargetPlatform.iOS;
+  } else if (Platform.isLinux || Platform.isWindows) {
+    targetPlatform = TargetPlatform.android;
+  }
+  if (targetPlatform != null) {
+    debugDefaultTargetPlatformOverride = targetPlatform;
+  }
+}
+
+class MyApp extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: 'Flutter Demo',
+      theme: ThemeData(
+        primarySwatch: Colors.blue,
+      ),
+      home: MyHomePage(),
+    );
+  }
+}
+
+class MyHomePage extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return LayoutBuilder(builder: (_, constraints) {
+      final _breakpoint = Breakpoint.fromConstraints(constraints);
+      return Scaffold(
+        appBar: AppBar(
+          title: Text('Breakpoint Example: ${_breakpoint.toString()}'),
+        ),
+        body: Container(
+          padding: EdgeInsets.all(_breakpoint.gutters),
+          child: GridView.builder(
+            gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
+              crossAxisCount: _breakpoint.columns,
+              crossAxisSpacing: _breakpoint.gutters,
+              mainAxisSpacing: _breakpoint.gutters,
+            ),
+            itemCount: 200,
+            itemBuilder: (_, index) {
+              return Container(
+                child: Card(
+                  child: Text(
+                    index.toString(),
+                  ),
+                ),
+              );
+            },
+          ),
+        ),
+      );
+    });
+  }
+}