112 lines
2.7 KiB
C#
112 lines
2.7 KiB
C#
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using System;
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using SkiaSharp;
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namespace Microsoft.Maui.Platform.Linux.Rendering;
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public class RenderLayer : IDisposable
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{
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private SKBitmap? _bitmap;
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private SKCanvas? _canvas;
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private bool _isDirty = true;
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private SKRect _bounds;
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private bool _disposed;
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public int ZIndex { get; }
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public bool IsDirty => _isDirty;
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public bool IsVisible { get; set; } = true;
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public float Opacity { get; set; } = 1f;
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public RenderLayer(int zIndex)
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{
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ZIndex = zIndex;
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}
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public SKCanvas BeginDraw(SKRect bounds)
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{
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//IL_0009: Unknown result type (might be due to invalid IL or missing references)
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//IL_000e: Unknown result type (might be due to invalid IL or missing references)
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//IL_0083: Unknown result type (might be due to invalid IL or missing references)
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//IL_005b: Unknown result type (might be due to invalid IL or missing references)
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//IL_0065: Expected O, but got Unknown
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//IL_006c: Unknown result type (might be due to invalid IL or missing references)
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//IL_0076: Expected O, but got Unknown
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//IL_0077: Unknown result type (might be due to invalid IL or missing references)
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//IL_0078: Unknown result type (might be due to invalid IL or missing references)
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if (_bitmap == null || _bounds != bounds)
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{
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SKBitmap? bitmap = _bitmap;
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if (bitmap != null)
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{
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((SKNativeObject)bitmap).Dispose();
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}
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SKCanvas? canvas = _canvas;
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if (canvas != null)
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{
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((SKNativeObject)canvas).Dispose();
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}
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int num = Math.Max(1, (int)((SKRect)(ref bounds)).Width);
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int num2 = Math.Max(1, (int)((SKRect)(ref bounds)).Height);
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_bitmap = new SKBitmap(num, num2, (SKColorType)4, (SKAlphaType)2);
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_canvas = new SKCanvas(_bitmap);
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_bounds = bounds;
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}
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_canvas.Clear(SKColors.Transparent);
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_isDirty = false;
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return _canvas;
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}
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public void Invalidate()
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{
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_isDirty = true;
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}
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public void DrawTo(SKCanvas canvas, SKRect bounds)
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{
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//IL_0011: Unknown result type (might be due to invalid IL or missing references)
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//IL_0016: Unknown result type (might be due to invalid IL or missing references)
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//IL_0029: Unknown result type (might be due to invalid IL or missing references)
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//IL_0034: Expected O, but got Unknown
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if (!IsVisible || _bitmap == null)
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{
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return;
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}
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SKPaint val = new SKPaint
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{
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Color = ((SKColor)(ref SKColors.White)).WithAlpha((byte)(Opacity * 255f))
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};
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try
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{
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canvas.DrawBitmap(_bitmap, ((SKRect)(ref bounds)).Left, ((SKRect)(ref bounds)).Top, val);
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}
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finally
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{
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((IDisposable)val)?.Dispose();
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}
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}
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public void Dispose()
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{
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if (!_disposed)
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{
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_disposed = true;
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SKCanvas? canvas = _canvas;
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if (canvas != null)
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{
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((SKNativeObject)canvas).Dispose();
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}
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SKBitmap? bitmap = _bitmap;
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if (bitmap != null)
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{
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((SKNativeObject)bitmap).Dispose();
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}
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}
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}
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}
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