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@ -10,6 +10,7 @@ using Avalonia.Rendering.SceneGraph; |
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using Avalonia.Rendering.Utilities; |
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using Avalonia.Utilities; |
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using Avalonia.Media.Imaging; |
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using JetBrains.Annotations; |
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using SkiaSharp; |
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namespace Avalonia.Skia |
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@ -17,7 +18,7 @@ namespace Avalonia.Skia |
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/// <summary>
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/// Skia based drawing context.
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/// </summary>
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internal class DrawingContextImpl : IDrawingContextImpl, ISkiaDrawingContextImpl, IDrawingContextWithAcrylicLikeSupport |
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internal class DrawingContextImpl : IDrawingContextImpl, IDrawingContextWithAcrylicLikeSupport |
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{ |
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private IDisposable[] _disposables; |
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private readonly Vector _dpi; |
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@ -38,7 +39,8 @@ namespace Avalonia.Skia |
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private readonly SKPaint _fillPaint = new SKPaint(); |
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private readonly SKPaint _boxShadowPaint = new SKPaint(); |
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private static SKShader s_acrylicNoiseShader; |
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private readonly ISkiaGpuRenderSession _session; |
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private readonly ISkiaGpuRenderSession _session; |
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private bool _leased = false; |
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/// <summary>
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/// Context create info.
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@ -83,6 +85,47 @@ namespace Avalonia.Skia |
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public ISkiaGpuRenderSession CurrentSession; |
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} |
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class SkiaLeaseFeature : ISkiaSharpApiLeaseFeature |
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{ |
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private readonly DrawingContextImpl _context; |
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public SkiaLeaseFeature(DrawingContextImpl context) |
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{ |
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_context = context; |
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} |
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public ISkiaSharpApiLease Lease() |
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{ |
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_context.CheckLease(); |
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return new ApiLease(_context); |
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} |
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class ApiLease : ISkiaSharpApiLease |
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{ |
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private DrawingContextImpl _context; |
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private readonly SKMatrix _revertTransform; |
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public ApiLease(DrawingContextImpl context) |
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{ |
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_revertTransform = context.Canvas.TotalMatrix; |
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_context = context; |
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_context._leased = true; |
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} |
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public SKCanvas SkCanvas => _context.Canvas; |
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public GRContext GrContext => _context.GrContext; |
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public SKSurface SkSurface => _context.Surface; |
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public double CurrentOpacity => _context._currentOpacity; |
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public void Dispose() |
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{ |
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_context.Canvas.SetMatrix(_revertTransform); |
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_context._leased = false; |
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_context = null; |
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} |
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} |
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} |
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/// <summary>
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/// Create new drawing context.
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/// </summary>
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@ -123,20 +166,23 @@ namespace Avalonia.Skia |
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public SKCanvas Canvas { get; } |
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public SKSurface Surface { get; } |
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SKCanvas ISkiaDrawingContextImpl.SkCanvas => Canvas; |
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SKSurface ISkiaDrawingContextImpl.SkSurface => Surface; |
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GRContext ISkiaDrawingContextImpl.GrContext => _grContext; |
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double ISkiaDrawingContextImpl.CurrentOpacity => _currentOpacity; |
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private void CheckLease() |
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{ |
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if (_leased) |
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throw new InvalidOperationException("The underlying graphics API is currently leased"); |
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} |
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/// <inheritdoc />
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public void Clear(Color color) |
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{ |
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CheckLease(); |
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Canvas.Clear(color.ToSKColor()); |
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} |
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/// <inheritdoc />
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public void DrawBitmap(IRef<IBitmapImpl> source, double opacity, Rect sourceRect, Rect destRect, BitmapInterpolationMode bitmapInterpolationMode) |
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{ |
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CheckLease(); |
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var drawableImage = (IDrawableBitmapImpl)source.Item; |
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var s = sourceRect.ToSKRect(); |
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var d = destRect.ToSKRect(); |
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@ -157,6 +203,7 @@ namespace Avalonia.Skia |
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/// <inheritdoc />
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public void DrawBitmap(IRef<IBitmapImpl> source, IBrush opacityMask, Rect opacityMaskRect, Rect destRect) |
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{ |
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CheckLease(); |
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PushOpacityMask(opacityMask, opacityMaskRect); |
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DrawBitmap(source, 1, new Rect(0, 0, source.Item.PixelSize.Width, source.Item.PixelSize.Height), destRect, BitmapInterpolationMode.Default); |
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PopOpacityMask(); |
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@ -165,6 +212,7 @@ namespace Avalonia.Skia |
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/// <inheritdoc />
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public void DrawLine(IPen pen, Point p1, Point p2) |
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{ |
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CheckLease(); |
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using (var paint = CreatePaint(_strokePaint, pen, new Size(Math.Abs(p2.X - p1.X), Math.Abs(p2.Y - p1.Y)))) |
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{ |
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if (paint.Paint is object) |
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@ -177,6 +225,7 @@ namespace Avalonia.Skia |
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/// <inheritdoc />
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public void DrawGeometry(IBrush brush, IPen pen, IGeometryImpl geometry) |
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{ |
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CheckLease(); |
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var impl = (GeometryImpl) geometry; |
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var size = geometry.Bounds.Size; |
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@ -260,6 +309,7 @@ namespace Avalonia.Skia |
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{ |
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if (rect.Rect.Height <= 0 || rect.Rect.Width <= 0) |
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return; |
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CheckLease(); |
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var rc = rect.Rect.ToSKRect(); |
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var isRounded = rect.IsRounded; |
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@ -296,6 +346,7 @@ namespace Avalonia.Skia |
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{ |
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if (rect.Rect.Height <= 0 || rect.Rect.Width <= 0) |
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return; |
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CheckLease(); |
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// Arbitrary chosen values
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// On OSX Skia breaks OpenGL context when asked to draw, e. g. (0, 0, 623, 6666600) rect
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if (rect.Rect.Height > 8192 || rect.Rect.Width > 8192) |
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@ -421,7 +472,8 @@ namespace Avalonia.Skia |
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{ |
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if (rect.Height <= 0 || rect.Width <= 0) |
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return; |
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CheckLease(); |
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var rc = rect.ToSKRect(); |
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if (brush != null) |
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@ -447,6 +499,7 @@ namespace Avalonia.Skia |
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/// <inheritdoc />
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public void DrawGlyphRun(IBrush foreground, GlyphRun glyphRun) |
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{ |
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CheckLease(); |
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using (var paintWrapper = CreatePaint(_fillPaint, foreground, glyphRun.Size)) |
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{ |
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var glyphRunImpl = (GlyphRunImpl)glyphRun.GlyphRunImpl; |
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@ -459,18 +512,21 @@ namespace Avalonia.Skia |
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/// <inheritdoc />
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public IDrawingContextLayerImpl CreateLayer(Size size) |
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{ |
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CheckLease(); |
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return CreateRenderTarget(size, true); |
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} |
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/// <inheritdoc />
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public void PushClip(Rect clip) |
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{ |
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CheckLease(); |
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Canvas.Save(); |
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Canvas.ClipRect(clip.ToSKRect()); |
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} |
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public void PushClip(RoundedRect clip) |
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{ |
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CheckLease(); |
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Canvas.Save(); |
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Canvas.ClipRoundRect(clip.ToSKRoundRect(), antialias:true); |
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} |
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@ -478,12 +534,14 @@ namespace Avalonia.Skia |
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/// <inheritdoc />
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public void PopClip() |
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{ |
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CheckLease(); |
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Canvas.Restore(); |
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} |
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/// <inheritdoc />
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public void PushOpacity(double opacity) |
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{ |
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CheckLease(); |
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_opacityStack.Push(_currentOpacity); |
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_currentOpacity *= opacity; |
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} |
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@ -491,6 +549,7 @@ namespace Avalonia.Skia |
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/// <inheritdoc />
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public void PopOpacity() |
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{ |
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CheckLease(); |
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_currentOpacity = _opacityStack.Pop(); |
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} |
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@ -499,6 +558,7 @@ namespace Avalonia.Skia |
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{ |
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if(_disposed) |
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return; |
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CheckLease(); |
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try |
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{ |
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if (_grContext != null) |
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@ -523,6 +583,7 @@ namespace Avalonia.Skia |
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/// <inheritdoc />
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public void PushGeometryClip(IGeometryImpl clip) |
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{ |
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CheckLease(); |
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Canvas.Save(); |
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Canvas.ClipPath(((GeometryImpl)clip).EffectivePath, SKClipOperation.Intersect, true); |
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} |
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@ -530,12 +591,14 @@ namespace Avalonia.Skia |
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/// <inheritdoc />
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public void PopGeometryClip() |
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{ |
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CheckLease(); |
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Canvas.Restore(); |
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} |
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/// <inheritdoc />
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public void PushBitmapBlendMode(BitmapBlendingMode blendingMode) |
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{ |
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CheckLease(); |
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_blendingModeStack.Push(_currentBlendingMode); |
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_currentBlendingMode = blendingMode; |
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} |
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@ -543,14 +606,20 @@ namespace Avalonia.Skia |
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/// <inheritdoc />
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public void PopBitmapBlendMode() |
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{ |
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CheckLease(); |
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_currentBlendingMode = _blendingModeStack.Pop(); |
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} |
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public void Custom(ICustomDrawOperation custom) => custom.Render(this); |
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public void Custom(ICustomDrawOperation custom) |
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{ |
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CheckLease(); |
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custom.Render(this); |
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} |
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/// <inheritdoc />
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public void PushOpacityMask(IBrush mask, Rect bounds) |
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{ |
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CheckLease(); |
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// TODO: This should be disposed
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var paint = new SKPaint(); |
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@ -561,6 +630,7 @@ namespace Avalonia.Skia |
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/// <inheritdoc />
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public void PopOpacityMask() |
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{ |
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CheckLease(); |
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using (var paint = new SKPaint { BlendMode = SKBlendMode.DstIn }) |
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{ |
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Canvas.SaveLayer(paint); |
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@ -580,6 +650,7 @@ namespace Avalonia.Skia |
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get { return _currentTransform; } |
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set |
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{ |
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CheckLease(); |
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if (_currentTransform == value) |
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return; |
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@ -596,6 +667,14 @@ namespace Avalonia.Skia |
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} |
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} |
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[CanBeNull] |
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public object GetFeature(Type t) |
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{ |
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if (t == typeof(ISkiaSharpApiLeaseFeature)) |
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return new SkiaLeaseFeature(this); |
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return null; |
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} |
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/// <summary>
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/// Configure paint wrapper for using gradient brush.
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/// </summary>
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Max Katz
4 years ago
GitHub