Merge branch 'cupertino' of github.com:UnityTech/UIWidgets into yczhang1.5.4

Runtime/cupertino/app.cs

             List<Locale> supportedLocales = null,
             bool showPerformanceOverlay = false
         ) : base(key: key) {
-            D.assert(routes != null);
-            D.assert(navigatorObservers != null);
-            D.assert(title != null);
-            D.assert(showPerformanceOverlay != null);
+            // D.assert(routes != null);
+            // D.assert(navigatorObservers != null);
+            // D.assert(title != null);
+            // D.assert(showPerformanceOverlay != null);
 
             supportedLocales = supportedLocales ?? new List<Locale> {new Locale("en", "US")};
             this.navigatorKey = navigatorKey;

Runtime/cupertino/theme.cs

         public static readonly Color _kDefaultBarDarkBackgroundColor = new Color(0xB7212121);
     }
 
-    class CupertinoTheme : StatelessWidget {
+    public class CupertinoTheme : StatelessWidget {
         public CupertinoTheme(
             CupertinoThemeData data,
             Widget child,

Runtime/cupertino/page_scaffold.cs

+using System;
+using System.Collections.Generic;
+using Unity.UIWidgets.animation;
+using Unity.UIWidgets.foundation;
+using Unity.UIWidgets.painting;
+using Unity.UIWidgets.ui;
+using Unity.UIWidgets.widgets;
+
+namespace Unity.UIWidgets.cupertino {
+    public class CupertinoPageScaffold : StatefulWidget {
+        /// Creates a layout for pages with a navigation bar at the top.
+        public CupertinoPageScaffold(
+            Widget child,
+            Key key = null,
+            ObstructingPreferredSizeWidget navigationBar = null,
+            Color backgroundColor = null,
+            bool resizeToAvoidBottomInset = true
+        ) : base(key: key) {
+            D.assert(child != null);
+            D.assert(resizeToAvoidBottomInset != null);
+
+            this.child = child;
+            this.navigationBar = navigationBar;
+            this.backgroundColor = backgroundColor;
+            this.resizeToAvoidBottomInset = resizeToAvoidBottomInset;
+        }
+
+        public readonly ObstructingPreferredSizeWidget navigationBar;
+        public readonly Widget child;
+        public readonly Color backgroundColor;
+        public readonly bool resizeToAvoidBottomInset;
+
+
+        public override State createState() {
+            return new _CupertinoPageScaffoldState();
+        }
+    }
+
+    class _CupertinoPageScaffoldState : State<CupertinoPageScaffold> {
+        public readonly ScrollController _primaryScrollController = new ScrollController();
+
+        void _handleStatusBarTap() {
+            // Only act on the scroll controller if it has any attached scroll positions.
+            if (this._primaryScrollController.hasClients) {
+                this._primaryScrollController.animateTo(
+                    0.0f,
+                    duration: new TimeSpan(0, 0, 0, 0, 500),
+                    curve: Curves.linearToEaseOut
+                );
+            }
+        }
+
+        public override Widget build(BuildContext context) {
+            List<Widget> stacked = new List<Widget>();
+
+            Widget paddedContent = this.widget.child;
+
+            MediaQueryData existingMediaQuery = MediaQuery.of(context);
+            if (this.widget.navigationBar != null) {
+                float topPadding = this.widget.navigationBar.preferredSize.height + existingMediaQuery.padding.top;
+
+                float bottomPadding = this.widget.resizeToAvoidBottomInset
+                    ? existingMediaQuery.viewInsets.bottom
+                    : 0.0f;
+
+                EdgeInsets newViewInsets = this.widget.resizeToAvoidBottomInset
+                    ? existingMediaQuery.viewInsets.copyWith(bottom: 0.0f)
+                    : existingMediaQuery.viewInsets;
+
+                bool fullObstruction =
+                    this.widget.navigationBar.fullObstruction == false
+                        ? CupertinoTheme.of(context).barBackgroundColor.alpha == 0xFF
+                        : this.widget.navigationBar.fullObstruction;
+
+                if (fullObstruction) {
+                    paddedContent = new MediaQuery(
+                        data: existingMediaQuery
+                            .removePadding(removeTop: true)
+                            .copyWith(
+                                viewInsets: newViewInsets
+                            ),
+                        child: new Padding(
+                            padding: EdgeInsets.only(top: topPadding, bottom: bottomPadding),
+                            child: paddedContent
+                        )
+                    );
+                }
+                else {
+                    paddedContent = new MediaQuery(
+                        data: existingMediaQuery.copyWith(
+                            padding: existingMediaQuery.padding.copyWith(
+                                top: topPadding
+                            ),
+                            viewInsets: newViewInsets
+                        ),
+                        child: new Padding(
+                            padding: EdgeInsets.only(bottom: bottomPadding),
+                            child: paddedContent
+                        )
+                    );
+                }
+            }
+
+            stacked.Add(new PrimaryScrollController(
+                controller: this._primaryScrollController,
+                child: paddedContent
+            ));
+
+            if (this.widget.navigationBar != null) {
+                stacked.Add(new Positioned(
+                    top: 0.0f,
+                    left: 0.0f,
+                    right: 0.0f,
+                    child: this.widget.navigationBar
+                ));
+            }
+
+            stacked.Add(new Positioned(
+                    top: 0.0f,
+                    left: 0.0f,
+                    right: 0.0f,
+                    height: existingMediaQuery.padding.top,
+                    child: new GestureDetector(
+                        onTap: this._handleStatusBarTap
+                    )
+                )
+            );
+
+            return new DecoratedBox(
+                decoration: new BoxDecoration(
+                    color: this.widget.backgroundColor ?? CupertinoTheme.of(context).scaffoldBackgroundColor
+                ),
+                child: new Stack(
+                    children: stacked
+                )
+            );
+        }
+    }
+
+    public abstract class ObstructingPreferredSizeWidget : PreferredSizeWidget {
+        public bool fullObstruction { get; }
+    }
+}

Runtime/cupertino/page_scaffold.cs.meta

+fileFormatVersion: 2
+guid: c8f7baea91a434b17b549b70613e6976
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Samples/UIWidgetSample/Editor/CupertinoSampleWidget.cs

+using Unity.UIWidgets.animation;
+using Unity.UIWidgets.cupertino;
+using Unity.UIWidgets.editor;
+using Unity.UIWidgets.foundation;
+using Unity.UIWidgets.painting;
+using Unity.UIWidgets.ui;
+using Unity.UIWidgets.widgets;
+using UnityEditor;
+using UnityEngine;
+using Rect = UnityEngine.Rect;
+
+namespace UIWidgetsSample {
+    public class CupertinoSample : UIWidgetsEditorWindow {
+        [MenuItem("UIWidgetsTests/CupertinoSample")]
+        public static void gallery() {
+            GetWindow<CupertinoSample>();
+        }
+
+        protected override void OnEnable() {
+            FontManager.instance.addFont(Resources.Load<Font>("CupertinoIcons"), "CupertinoIcons");
+            base.OnEnable();
+        }
+
+        protected override Widget createWidget() {
+            Debug.Log("[Cupertino Sample] Created");
+            return new CupertinoSampleApp();
+        }
+    }
+
+
+    public class CupertinoSampleApp : StatelessWidget {
+        public override Widget build(BuildContext context) {
+            return new CupertinoApp(
+                theme: new CupertinoThemeData(
+                    textTheme: new CupertinoTextThemeData(
+                        navLargeTitleTextStyle: new TextStyle(
+                            fontWeight: FontWeight.bold,
+                            fontSize: 70f,
+                            color: CupertinoColors.activeBlue
+                        )
+                    )),
+                home: new CupertinoSampleWidget()
+            );
+        }
+    }
+
+    public class CupertinoSampleWidget : StatefulWidget {
+        public CupertinoSampleWidget(Key key = null) : base(key) { }
+
+        public override State createState() {
+            return new CupertinoSampleWidgetState();
+        }
+    }
+
+    public class CupertinoSampleWidgetState : State<CupertinoSampleWidget> {
+        public override Widget build(BuildContext context) {
+            return new CupertinoPageScaffold(
+                child: new Center(
+                    child: new Text("Hello Cupertino",
+                        style: CupertinoTheme.of(context).textTheme.navLargeTitleTextStyle
+                    )
+                )
+            );
+        }
+    }
+}

Samples/UIWidgetSample/Editor/CupertinoSampleWidget.cs.meta

+fileFormatVersion: 2
+guid: 92aa3442134248a38d03c2a24a8a9962
+timeCreated: 1566545424