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@ -4,6 +4,7 @@ using Perspex.Media; |
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using Perspex.Media.Imaging; |
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using SkiaSharp; |
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using System.Linq; |
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using Perspex.RenderHelpers; |
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namespace Perspex.Skia |
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{ |
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@ -14,6 +15,7 @@ namespace Perspex.Skia |
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public DrawingContextImpl(SKCanvas canvas) |
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{ |
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Canvas = canvas; |
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Canvas.Clear(); |
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} |
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public void DrawImage(IBitmap source, double opacity, Rect sourceRect, Rect destRect) |
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@ -28,7 +30,7 @@ namespace Perspex.Skia |
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{ |
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using (var paint = CreatePaint(pen, new Size(Math.Abs(p2.X - p1.X), Math.Abs(p2.Y - p1.Y)))) |
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{ |
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Canvas.DrawLine((float)p1.X, (float)p1.Y, (float)p2.X, (float)p2.Y, paint); |
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Canvas.DrawLine((float)p1.X, (float)p1.Y, (float)p2.X, (float)p2.Y, paint.Paint); |
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} |
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} |
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@ -37,37 +39,70 @@ namespace Perspex.Skia |
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var impl = ((StreamGeometryImpl)geometry.PlatformImpl); |
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var size = geometry.Bounds.Size; |
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using (var fill = brush != null ? CreatePaint(brush, size) : null) |
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using (var stroke = pen?.Brush != null ? CreatePaint(pen, size) : null) |
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using (var fill = brush != null ? CreatePaint(brush, size) : default(PaintWrapper)) |
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using (var stroke = pen?.Brush != null ? CreatePaint(pen, size) : default(PaintWrapper)) |
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{ |
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if (fill != null) |
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if (fill.Paint != null) |
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{ |
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Canvas.DrawPath(impl.EffectivePath, fill); |
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Canvas.DrawPath(impl.EffectivePath, fill.Paint); |
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} |
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if (stroke != null) |
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if (stroke.Paint != null) |
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{ |
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Canvas.DrawPath(impl.EffectivePath, stroke); |
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Canvas.DrawPath(impl.EffectivePath, stroke.Paint); |
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} |
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} |
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} |
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private SKPaint CreatePaint(IBrush brush, Size targetSize) |
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struct PaintWrapper : IDisposable |
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{ |
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SKPaint paint = new SKPaint(); |
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//We are saving memory allocations there
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//TODO: add more disposable fields if needed
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public readonly SKPaint Paint; |
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private IDisposable _disposable1; |
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public void AddDisposable(IDisposable disposable) |
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{ |
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if (_disposable1 == null) |
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_disposable1 = disposable; |
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else |
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throw new InvalidOperationException(); |
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} |
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public PaintWrapper(SKPaint paint) |
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{ |
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Paint = paint; |
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_disposable1 = null; |
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} |
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public void Dispose() |
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{ |
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Paint?.Dispose(); |
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_disposable1?.Dispose(); |
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} |
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} |
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private PaintWrapper CreatePaint(IBrush brush, Size targetSize) |
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{ |
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SKPaint paint = new SKPaint(); |
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var rv = new PaintWrapper(paint); |
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paint.IsStroke = false; |
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// TODO: SkiaSharp does not contain alpha yet!
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//double opacity = brush.Opacity * _currentOpacity;
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double opacity = brush.Opacity * _currentOpacity; |
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//paint.SetAlpha(paint.GetAlpha() * opacity);
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paint.IsAntialias = true; |
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SKColor color = new SKColor(255, 255, 255, 255); |
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var solid = brush as SolidColorBrush; |
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if (solid != null) |
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{ |
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paint.Color = solid.Color.ToSKColor(); |
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return paint; |
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} |
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color = solid.Color.ToSKColor(); |
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paint.Color = (new SKColor(color.Red, color.Green, color.Blue, (byte) (color.Alpha*opacity))); |
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if (solid != null) |
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return rv; |
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var gradient = brush as GradientBrush; |
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if (gradient != null) |
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@ -85,6 +120,7 @@ namespace Perspex.Skia |
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// would be nice to cache these shaders possibly?
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var shader = SKShader.CreateLinearGradient(start, end, stopColors, stopOffsets, tileMode); |
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paint.Shader = shader; |
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shader.Dispose(); |
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} |
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else |
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{ |
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@ -100,45 +136,46 @@ namespace Perspex.Skia |
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// would be nice to cache these shaders possibly?
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var shader = SKShader.CreateRadialGradient(center, radius, stopColors, stopOffsets, tileMode); |
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paint.Shader = shader; |
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shader.Dispose(); |
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} |
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} |
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return paint; |
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return rv; |
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} |
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var tileBrush = brush as TileBrush; |
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if (tileBrush != null) |
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{ |
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// TODO: Get Tile Brushes working!!!
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//
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//throw new NotImplementedException();
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// rv.Brush->Type = NativeBrushType.Image;
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// var helper = new TileBrushImplHelper(tileBrush, targetSize);
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// var bitmap = new BitmapImpl((int)helper.IntermediateSize.Width, (int)helper.IntermediateSize.Height);
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// rv.AddDisposable(bitmap);
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// using (var ctx = bitmap.CreateDrawingContext())
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// helper.DrawIntermediate(ctx);
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// rv.Brush->Bitmap = bitmap.Handle;
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// rv.Brush->BitmapTileMode = tileBrush.TileMode;
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// rv.Brush->BitmapTranslation = new SkiaPoint(-helper.DestinationRect.X, -helper.DestinationRect.Y);
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// SkMatrix matrix;
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// matrix.setTranslate(brush->BitmapTranslation);
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// SkShader::TileMode tileX = brush->BitmapTileMode == ptmNone ? SkShader::kClamp_TileMode
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// : (brush->BitmapTileMode == ptmFlipX || brush->BitmapTileMode == ptmFlipXY) ? SkShader::kMirror_TileMode : SkShader::kRepeat_TileMode;
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// SkShader::TileMode tileY = brush->BitmapTileMode == ptmNone ? SkShader::kClamp_TileMode
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// : (brush->BitmapTileMode == ptmFlipY || brush->BitmapTileMode == ptmFlipXY) ? SkShader::kMirror_TileMode : SkShader::kRepeat_TileMode;
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// paint.setShader(SkShader::CreateBitmapShader(brush->Bitmap->Bitmap, tileX, tileY, &matrix))->unref();
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var helper = new TileBrushImplHelper(tileBrush, targetSize); |
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var bitmap = new BitmapImpl((int)helper.IntermediateSize.Width, (int)helper.IntermediateSize.Height); |
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rv.AddDisposable(bitmap); |
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using (var ctx = bitmap.CreateDrawingContext()) |
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helper.DrawIntermediate(ctx); |
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SKMatrix translation = SKMatrix.MakeTranslation(-(float)helper.DestinationRect.X, -(float)helper.DestinationRect.Y); |
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SKShaderTileMode tileX = |
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tileBrush.TileMode == TileMode.None |
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? SKShaderTileMode.Clamp |
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: tileBrush.TileMode == TileMode.FlipX || tileBrush.TileMode == TileMode.FlipXY |
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? SKShaderTileMode.Mirror |
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: SKShaderTileMode.Repeat; |
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SKShaderTileMode tileY = |
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tileBrush.TileMode == TileMode.None |
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? SKShaderTileMode.Clamp |
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: tileBrush.TileMode == TileMode.FlipY || tileBrush.TileMode == TileMode.FlipXY |
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? SKShaderTileMode.Mirror |
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: SKShaderTileMode.Repeat; |
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paint.Shader = SKShader.CreateBitmap(bitmap.Bitmap, tileX, tileY, translation); |
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paint.Shader.Dispose(); |
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} |
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return paint; |
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return rv; |
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} |
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private SKPaint CreatePaint(Pen pen, Size targetSize) |
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private PaintWrapper CreatePaint(Pen pen, Size targetSize) |
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{ |
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var paint = CreatePaint(pen.Brush, targetSize); |
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var rv = CreatePaint(pen.Brush, targetSize); |
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var paint = rv.Paint; |
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paint.IsStroke = true; |
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paint.StrokeWidth = (float)pen.Thickness; |
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@ -178,7 +215,7 @@ namespace Perspex.Skia |
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// paint.setPathEffect(SkDashPathEffect::Create(brush->StrokeDashes, brush->StrokeDashCount, brush->StrokeDashOffset))->unref();
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//}
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return paint; |
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return rv; |
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} |
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public void DrawRectangle(Pen pen, Rect rect, float cornerRadius = 0) |
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@ -188,13 +225,13 @@ namespace Perspex.Skia |
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var rc = rect.ToSKRect(); |
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if (cornerRadius == 0) |
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{ |
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Canvas.DrawRect(rc, paint); |
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Canvas.DrawRect(rc, paint.Paint); |
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} |
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else |
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{ |
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// TODO: DrawRRect (ore DrawRoundedRect) is not accesible in SkiaSharp yet. We should add that
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// to SkiaSharp and initiate a PR....
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Canvas.DrawRect(rc, paint); |
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Canvas.DrawRect(rc, paint.Paint); |
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//Canvas.DrawRoundedRect(rc, cornerRadius, cornerRadius, paint);
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} |
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} |
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@ -207,14 +244,14 @@ namespace Perspex.Skia |
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var rc = rect.ToSKRect(); |
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if (cornerRadius == 0) |
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{ |
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Canvas.DrawRect(rc, paint); |
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Canvas.DrawRect(rc, paint.Paint); |
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} |
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else |
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{ |
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// TODO: this does not exist in SkiaSharp yet
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//throw new NotImplementedException();
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//Canvas.DrawRoundedRect(rc, cornerRadius, cornerRadius, paint);
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Canvas.DrawRect(rc, paint); |
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Canvas.DrawRect(rc, paint.Paint); |
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} |
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} |
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} |
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Jason Jarvis
10 years ago