Adds support for 'SelectableText'

demo/lib/main.dart

@@ -7,6 +7,7 @@ import 'max_lines_demo.dart';
 import 'min_font_size_demo.dart';
 import 'overflow_replacement_demo.dart';
 import 'preset_font_sizes_demo.dart';
+import 'selectable_text_demo.dart';
 import 'step_granularity.dart';
 import 'sync_demo.dart';
 
@@ -43,6 +44,7 @@ List<MaterialColor> colors = [
   Colors.lightBlue,
   Colors.green,
   Colors.blueGrey,
+  Colors.teal,
 ];
 
 List<String> demoNames = [
@@ -52,6 +54,7 @@ List<String> demoNames = [
   'StepGranularity',
   'PresetFontSizes',
   'OverflowReplacement',
+  'Text Selection',
 ];
 
 class _DemoAppState extends State<DemoApp> {
@@ -138,6 +141,11 @@ class _DemoAppState extends State<DemoApp> {
             title: Text('replacement'),
             activeColor: colors[5],
           ),
+          BottomNavyBarItem(
+            icon: Icon(MdiIcons.selection),
+            title: Text('selection'),
+            activeColor: colors[6],
+          ),
         ],
       ),
     );
@@ -155,6 +163,10 @@ class _DemoAppState extends State<DemoApp> {
         return StepGranularityDemo(_richText);
       case 4:
         return PresetFontSizesDemo(_richText);
+      case 5:
+        return OverflowReplacementDemo(_richText);
+      case 6:
+        return SelectableTextDemo(_richText);
       default:
         return OverflowReplacementDemo(_richText);
     }

demo/lib/selectable_text_demo.dart

@@ -0,0 +1,62 @@
+library selectable_text_demo.dart;
+
+import 'package:auto_size_text/auto_size_text.dart';
+import 'package:flutter/material.dart';
+
+import 'animated_input.dart';
+import 'text_card.dart';
+import 'utils.dart';
+
+/// A stateful widget to render SelectableTextDemo.
+class SelectableTextDemo extends StatelessWidget {
+  const SelectableTextDemo(this.richText, {Key? key}) : super(key: key);
+
+  final bool richText;
+
+  @override
+  Widget build(BuildContext context) {
+    return AnimatedInput(
+      text: '"AutoSizeText.selectable" & "AutoSizeText.richSelectable"'
+          ' widgets displays a string of text with a single style'
+          ' or paragraphs with differently styled TextSpans.'
+          ' It is similar to "SelectableText" & "SelectableText.rich", but uses AutoSizeText to render.',
+      builder: (input) {
+        return Row(
+          children: <Widget>[
+            Expanded(
+              child: TextCard(
+                title: 'AutoSizeText',
+                child: !richText
+                    ? AutoSizeText(
+                        input,
+                        style: TextStyle(fontSize: 30),
+                      )
+                    : AutoSizeText.rich(
+                        spanFromString(input),
+                        style: TextStyle(fontSize: 30),
+                      ),
+              ),
+            ),
+            SizedBox(width: 10),
+            Expanded(
+              child: TextCard(
+                title: 'AutoSizeText.selectable',
+                child: !richText
+                    ? AutoSizeText.selectable(
+                        input,
+                        style: TextStyle(fontSize: 30),
+                        maxLines: 2,
+                      )
+                    : AutoSizeText.richSelectable(
+                        spanFromString(input),
+                        style: TextStyle(fontSize: 30),
+                        maxLines: 2,
+                      ),
+              ),
+            ),
+          ],
+        );
+      },
+    );
+  }
+}

lib/auto_size_text.dart

@@ -3,7 +3,10 @@
 library auto_size_text;
 
 import 'dart:async';
+import 'dart:ui' as ui show BoxHeightStyle, BoxWidthStyle;
 
+import 'package:flutter/gestures.dart';
+import 'package:flutter/material.dart' show SelectableText;
 import 'package:flutter/widgets.dart';
 
 part 'src/auto_size_text.dart';