Adding HelloGUI feature test

FeatureExamples/Resources/Scripts/02_HelloGUI.cs

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+//
+// Copyright (c) 2008-2015 the Urho3D project.
+// Copyright (c) 2015 Xamarin Inc
+// Copyright (c) 2016 THUNDERBEAST GAMES LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+//
+
+using AtomicEngine;
+
+namespace FeatureExamples
+{
+    // TODO: Show drag and drop example
+
+	public class HelloGUISample : Sample
+	{
+
+        UIWindow window;
+
+		public HelloGUISample() : base() { }
+
+        public override void Start()
+        {
+			base.Start();
+
+			// Initialize Window
+			InitWindow();
+
+		}
+
+		void InitWindow()
+		{
+
+            var layout = new UILayout();
+            layout.Axis = UI_AXIS.UI_AXIS_Y;
+
+            var checkBox = new UICheckBox();
+            checkBox.Id = "Checkbox";
+
+            layout.AddChild(checkBox);
+
+            var button = new UIButton();
+            button.Text = "Button";
+            button.Id = "Button";
+
+            layout.AddChild(button);
+
+            var edit = new UIEditField();
+            layout.AddChild(edit);
+            edit.Id = "EditField";
+
+            window = new UIWindow();
+            window.Settings = UI_WINDOW_SETTINGS.UI_WINDOW_SETTINGS_TITLEBAR | UI_WINDOW_SETTINGS.UI_WINDOW_SETTINGS_CLOSE_BUTTON;
+
+            window.Text = "Hello Atomic GUI!";
+
+            window.AddChild(layout);
+
+            window.ResizeToFitContent();
+
+            UIView.AddChild(window);
+            window.Center();
+
+            SubscribeToEvent<WidgetEvent>(window, e =>
+            {
+                if (e.Type == UI_EVENT_TYPE.UI_EVENT_TYPE_CLICK)
+                {
+                    var target = e.Target;
+                    if (target != null)
+                    {
+                        window.Text = $"Hello: {target.Id}";
+                    }
+                    
+                }                
+
+            });
+
+            SubscribeToEvent<WidgetDeletedEvent>(window, e =>
+            {
+                Exit();
+            });
+
+        }
+		
+	}
+}

FeatureExamples/Resources/Scripts/02_HelloGUI.cs.asset

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+{
+	"version": 1,
+	"guid": "df61c215af0f86c17e8125a9cf47ac84",
+	"CSharpImporter": null
+}