rename from Pixiview to Gallery

Gallery.Android/Renderers/CardViewRenderer.cs

@@ -0,0 +1,84 @@
+using System.ComponentModel;
+using Android.Content;
+using Android.Graphics;
+using Android.Views;
+using Gallery.Droid.Renderers;
+using Gallery.UI;
+using Xamarin.Forms;
+using Xamarin.Forms.Platform.Android;
+
+[assembly: ExportRenderer(typeof(CardView), typeof(CardViewRenderer))]
+namespace Gallery.Droid.Renderers
+{
+    public class CardViewRenderer : VisualElementRenderer<CardView>
+    {
+        public CardViewRenderer(Context context) : base(context)
+        {
+        }
+
+        protected override void OnElementChanged(ElementChangedEventArgs<CardView> e)
+        {
+            base.OnElementChanged(e);
+
+            var element = e.NewElement;
+            if (element != null)
+            {
+                var radius = element.CornerRadius;
+                if (radius > 0)
+                {
+                    var density = Resources.DisplayMetrics.Density;
+
+                    OutlineProvider = new CornerRadiusOutlineProvider(element, radius, density);
+                    ClipToOutline = true;
+
+                    //var drawable = new RoundCornerDrawable(radius * density);
+                    //drawable.SetColorFilter(element.BackgroundColor.ToAndroid(), PorterDuff.Mode.Src);
+                    //((Android.Views.View)this).SetBackground(drawable);
+
+                    Elevation = (float)(element.ShadowOffset.Height + 2) * density;
+                }
+            }
+        }
+
+        protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
+        {
+            base.OnElementPropertyChanged(sender, e);
+
+            var element = Element;
+            if (element == null)
+            {
+                return;
+            }
+            switch (e.PropertyName)
+            {
+                case nameof(CardView.ShadowOffset):
+                    var density = Resources.DisplayMetrics.Density;
+                    Elevation = (float)(element.ShadowOffset.Height + 2) * density;
+                    break;
+            }
+        }
+
+        class CornerRadiusOutlineProvider : ViewOutlineProvider
+        {
+            readonly Element element;
+            readonly float radius;
+            readonly float density;
+
+            public CornerRadiusOutlineProvider(Element formsElement, float radius, float density)
+            {
+                element = formsElement;
+                this.radius = radius * density;
+                this.density = density;
+            }
+
+            public override void GetOutline(Android.Views.View view, Outline outline)
+            {
+                float scale = density;
+                double width = (double)element.GetValue(VisualElement.WidthProperty) * scale;
+                double height = (double)element.GetValue(VisualElement.HeightProperty) * scale;
+                var rect = new Android.Graphics.Rect(0, 0, (int)width, (int)height);
+                outline.SetRoundRect(rect, radius);
+            }
+        }
+    }
+}