test hover sample added

Author: zhuxingwei

Samples/UIWidgetSample/HoverRecognizerSample.cs

@@ -0,0 +1,82 @@
+using System.Collections.Generic;
+using Unity.UIWidgets.gestures;
+using Unity.UIWidgets.material;
+using Unity.UIWidgets.painting;
+using Unity.UIWidgets.rendering;
+using Unity.UIWidgets.ui;
+using Unity.UIWidgets.widgets;
+using UnityEngine;
+
+namespace UIWidgetsSample {
+    public class HoverRecognizerSample : UIWidgetsSamplePanel {
+        protected override Widget createWidget() {
+            return new MaterialApp(
+                showPerformanceOverlay: false,
+                home: new HoverMainPanel()
+                );
+        }
+
+        protected override void OnEnable() {
+            FontManager.instance.addFont(Resources.Load<Font>(path: "MaterialIcons-Regular"), "Material Icons");
+            base.OnEnable();
+        }
+    }
+
+    class HoverMainPanel : StatefulWidget {
+        public override State createState() {
+            return new HoverMainPanelState();
+        }
+    }
+
+    class HoverMainPanelState : State<HoverMainPanel> {
+        bool hoverActivated = false;
+        
+        public override Widget build(BuildContext context) {
+            return new Scaffold(
+                appBar: new AppBar(
+                    title: new Center(
+                        child: new Text("Test Hover Widget")
+                    )
+                ),
+                body: new Card(
+                    color: Colors.white,
+                    child: new Center(
+                        child: new Column(
+                            mainAxisSize: MainAxisSize.min,
+                            crossAxisAlignment: CrossAxisAlignment.center,
+                            children: new List<Widget> {
+                                new Icon(this.hoverActivated ? Unity.UIWidgets.material.Icons.pool : Unity.UIWidgets.material.Icons.directions_walk, size: 128.0f),
+                                new RichText(
+                                    text: new TextSpan(
+                                        text: "Test <",
+                                        style: new TextStyle(color: Colors.black),
+                                        children: new List<TextSpan>() {
+                                            new TextSpan(
+                                                text: "Hover Me",
+                                                style: new TextStyle(
+                                                    color: Colors.green,
+                                                    decoration: TextDecoration.underline
+                                                ),
+                                                hoverRecognizer: new HoverRecognizer {
+                                                    OnPointerEnter = evt => {
+                                                        this.setState(() => { this.hoverActivated = true; });
+                                                    },
+                                                    OnPointerLeave = () => {
+                                                        this.setState(() => { this.hoverActivated = false;});
+                                                    }
+                                                }
+                                            ),
+                                            new TextSpan(
+                                                text: ">"
+                                            )
+                                        }
+                                    )
+                                )
+                            }
+                        )
+                    )
+                )
+            );
+        }
+    }
+}