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Merge pull request #22 from MartinZikmund/dev/mazi/macos-support
macOS support
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source/SkiaSharp.Views/SkiaSharp.Views.Uno/SKXamlCanvas.macOS.cs
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| @@ -0,0 +1,95 @@ | ||
| #if __MACOS__ | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Runtime.InteropServices; | ||
| using System.Text; | ||
| using System.Threading.Tasks; | ||
| using CoreGraphics; | ||
| using SkiaSharp; | ||
| using SkiaSharp.Views.Mac; | ||
| using AppKit; | ||
| using Windows.ApplicationModel; | ||
| using Windows.Graphics.Display; | ||
| using Windows.UI.Core; | ||
| using Windows.UI.Xaml; | ||
| using Windows.UI.Xaml.Controls; | ||
| using Windows.UI.Xaml.Media; | ||
|
|
||
| namespace SkiaSharp.Views.UWP | ||
| { | ||
| public partial class SKXamlCanvas : FrameworkElement | ||
| { | ||
| private SKCGSurfaceFactory drawable; | ||
|
|
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| public SKXamlCanvas() | ||
| { | ||
| Loaded += OnLoaded; | ||
| Unloaded += OnUnloaded; | ||
| SizeChanged += OnSizeChanged; | ||
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| RegisterPropertyChangedCallback(VisibilityProperty, (s, e) => OnVisibilityChanged(s)); | ||
| OnVisibilityChanged(this); | ||
| Initialize(); | ||
| } | ||
|
|
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| private SKSize GetCanvasSize() => drawable?.Info.Size ?? SKSize.Empty; | ||
|
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| private static bool GetIsInitialized() => true; | ||
|
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| private void Initialize() | ||
| { | ||
| drawable = new SKCGSurfaceFactory(); | ||
| } | ||
|
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| private void OnDpiChanged(DisplayInformation sender, object args = null) | ||
| { | ||
| Dpi = sender.LogicalDpi / 96.0f; | ||
| Invalidate(); | ||
| } | ||
|
|
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| private void OnLoaded(object sender, RoutedEventArgs e) | ||
| { | ||
| var display = DisplayInformation.GetForCurrentView(); | ||
| display.DpiChanged += OnDpiChanged; | ||
|
|
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| OnDpiChanged(display); | ||
| Invalidate(); | ||
| } | ||
|
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| private void OnUnloaded(object sender, RoutedEventArgs e) | ||
| { | ||
| var display = DisplayInformation.GetForCurrentView(); | ||
| display.DpiChanged -= OnDpiChanged; | ||
| } | ||
|
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| private void DoInvalidate() | ||
| => NeedsDisplay = true; | ||
|
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| public override void DrawRect(CGRect rect) | ||
| { | ||
| base.DrawRect(rect); | ||
|
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| using (var ctx = NSGraphicsContext.CurrentContext.CGContext) | ||
| { | ||
| // create the skia context | ||
| SKImageInfo info; | ||
| using (var surface = drawable.CreateSurface(Bounds, IgnorePixelScaling ? 1 : Window.BackingScaleFactor, out info)) | ||
| { | ||
| // draw on the image using SKiaSharp | ||
| OnPaintSurface(new SKPaintSurfaceEventArgs(surface, info)); | ||
|
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| // draw the surface to the context | ||
| drawable.DrawSurface(ctx, Bounds, info, surface); | ||
| } | ||
| } | ||
| } | ||
|
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| protected override void Dispose(bool disposing) | ||
| { | ||
| base.Dispose(disposing); | ||
|
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| drawable?.Dispose(); | ||
| } | ||
| } | ||
| } | ||
| #endif |
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