「MAUIでSkiaSharpを使う」の版間の差分

@@ 37行目: / 37行目: @@
 === XAML ===
-clr-namespace:SkiaSharp.Views.Maui.Controls;assembly=SkiaSharp.Views.Maui.Controls
+<source lang=xml>
+<?xml version="1.0" encoding="utf-8" ?>
+<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             xmlns:skia="clr-namespace:SkiaSharp.Views.Maui.Controls;assembly=SkiaSharp.Views.Maui.Controls"
+             x:Class="Maui8.MainPage">
+    <skia:SKCanvasView x:Name="canvasView"
+                        PaintSurface="canvasViewPaintSurface"
+                        VerticalOptions="Fill"
+                        HorizontalOptions="Fill"
+                        />
+</ContentPage>
+</source>
+=== CS ===
+更新はメインスレッドでやる。
+<source lang="csharp">
+await MainThread.InvokeOnMainThreadAsync(() =>
+{
+	if (_bitmap != null)
+		_bitmap.Dispose();
+	_bitmap = bitmap;
+	canvasView.InvalidateSurface();
+});
+</source>
+描画
+<source lang="csharp">
+void canvasViewPaintSurface(Object sender, SKPaintSurfaceEventArgs e)
+{
+	if (_bitmap == null)
+		return;
+	using var canvas = e.Surface.Canvas;
+	canvas.Clear();
+	canvas.DrawBitmap(_bitmap, x:0, y:0);
+}
+</source>
 [[category: MAUI]]