feat: Added Tooltip95, a Windows95 Themed tooltip (#19)

Co-authored-by: Miguel Beltran <m@beltran.work>

README.md

@@ -123,6 +123,18 @@ TextField styled as a Windows95 text field.
 TextField95()
 ```
 
+#### Tooltip95
+
+A tooltip widget designed in Windows95 style.
+* Works just like Material's `Tooltip`.
+
+```dart
+Tooltip95(
+    message: 'Hello from Flutter95!',
+    child: Text('I have a tooltip for you!'),
+)
+```
+
 #### Elevation95
 
 Creates an effect of deepness and elevation around Widgets.

example/lib/main.dart

@@ -88,6 +88,14 @@ class MainScreen extends StatelessWidget {
                 style: Flutter95.textStyle,
               ),
               const SizedBox(height: 4),
+              Tooltip95(
+                message: 'Hello from Flutter95!',
+                child: Text(
+                  'Long press this on to see a tooltip',
+                  style: Flutter95.textStyle,
+                ),
+              ),
+              const SizedBox(height: 4),
               Button95(
                 onTap: () {
                   showDialog95(

lib/flutter95.dart

@@ -9,5 +9,6 @@ export 'src/scaffold95.dart';
 export 'src/text_field95.dart';
 export 'src/checkbox95.dart';
 export 'src/toolbar95.dart';
+export 'src/tooltip95.dart';
 export 'src/page_transitions95.dart';
 export 'src/utils.dart';

lib/src/globals.dart

@@ -13,6 +13,7 @@ class Flutter95 {
   static const headerLight = Color(0xFF1034a6);
   static const white = Color(0xFFFFFFFF);
   static const black = Color.fromRGBO(5, 6, 8, 1);
+  static const tooltipBackground = Color(0xFFFFFFE3);
 
   static Color get background => grays[1];
 

lib/src/tooltip95.dart

@@ -0,0 +1,55 @@
+import 'package:flutter/material.dart';
+import 'package:flutter95/src/globals.dart';
+
+class Tooltip95 extends StatelessWidget {
+  const Tooltip95({
+    Key? key,
+    required this.child,
+    required this.message,
+    this.triggerMode,
+    this.preferBelow,
+    this.showDuration,
+    this.onTriggered,
+  });
+
+  final Widget child;
+  final String message;
+  final TooltipTriggerMode? triggerMode;
+  final bool? preferBelow;
+  final Duration? showDuration;
+  final void Function()? onTriggered;
+
+  @override
+  Widget build(BuildContext context) {
+    return Tooltip(
+      key: key,
+      child: child,
+      message: message,
+      margin: const EdgeInsets.all(8.0),
+      textAlign: TextAlign.center,
+      preferBelow: preferBelow,
+      showDuration: showDuration,
+      onTriggered: onTriggered,
+      padding: const EdgeInsets.symmetric(
+        horizontal: 8,
+        vertical: 4,
+      ),
+      decoration: BoxDecoration(
+        border: Border.all(
+          color: Colors.black,
+          width: 1.0,
+        ),
+        borderRadius: BorderRadius.zero,
+        color: Flutter95.tooltipBackground,
+        boxShadow: [
+          BoxShadow(
+            color: Flutter95.black,
+            offset: Offset(2.0, 2.0),
+          ),
+        ],
+      ),
+      triggerMode: triggerMode,
+      textStyle: Flutter95.textStyle,
+    );
+  }
+}

test/flutter95_test.dart

@@ -82,6 +82,29 @@ void main() {
     });
   });
 
+  group('Tooltip95', () {
+    testWidgets('Can show tooltip', (tester) async {
+      String message = 'Hello world';
+
+      await tester.pumpWidget(
+        MaterialApp(
+          home: Tooltip95(
+            message: message,
+            triggerMode: TooltipTriggerMode.longPress,
+            child: Text(
+              'long press to show tooltip',
+              style: Flutter95.textStyle,
+            ),
+          ),
+        ),
+      );
+
+      await tester.longPress(find.byType(Text));
+      await tester.pump();
+      expect(find.byTooltip(message), findsOneWidget);
+    });
+  });
+
   group('Checkbox95', () {
     testWidgets('Can build enabled widget', (tester) async {
       await tester.pumpWidget(