Init

2024-02-23 06:53:16 -05:00
commit dbdccce727
1094 changed files with 57645 additions and 0 deletions
--- a/DataDisplay/Controls/RenderView.cs
+++ b/DataDisplay/Controls/RenderView.cs
@@ -0,0 +1,58 @@
+using SkiaSharp.Views.Forms;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using Xamarin.Forms;
+
+namespace DataDisplay.Controls
+{
+    public class CanvasView : SKCanvasView
+    {
+        public static readonly BindableProperty RendererProperty = BindableProperty.Create(
+            nameof(Renderer),
+            typeof(Renderers.IRenderer),
+            typeof(CanvasView),
+            null,
+            defaultBindingMode: BindingMode.TwoWay,
+            propertyChanged: (bindable, oldValue, newValue) =>
+            {
+                ((CanvasView)bindable).RendererChanged((Renderers.IRenderer)oldValue, (Renderers.IRenderer)newValue);
+            });
+
+        // callback appelée lors de la modificiation de la propriété "Renderer"
+        void RendererChanged(Renderers.IRenderer currentRenderer, Renderers.IRenderer newRenderer)
+        {
+            if (currentRenderer != newRenderer)
+            {
+                // détacher l'événement de l'ancien renderer
+                if (currentRenderer != null)
+                    currentRenderer.RefreshRequested -= Renderer_RefreshRequested;
+
+                // attacher l'événement du nouveau renderer
+                if (newRenderer != null)
+                    newRenderer.RefreshRequested += Renderer_RefreshRequested;
+
+                // rafraichir le contrôle
+                InvalidateSurface();
+            }
+        }
+
+    // Causes refreshing during an event triggered by the ISKRenderer interface
+    void Renderer_RefreshRequested(object sender, EventArgs e)
+        {
+            InvalidateSurface();
+        }
+
+        protected override void OnPaintSurface(SKPaintSurfaceEventArgs e)
+        {
+           if (null == Renderer) return;
+           Renderer.PaintSurface(e.Surface, e.Info);
+        }
+
+        public Renderers.IRenderer Renderer
+        {
+            get { return (Renderers.IRenderer)GetValue(RendererProperty); }
+            set { SetValue(RendererProperty, value); }
+        }
+    }
+}