Nikita Tsukanov
9 years ago
committed by
GitHub
GitHub
16 changed files with 169 additions and 397 deletions
@ -1,133 +0,0 @@ |
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using System; |
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using Avalonia.Media; |
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using Avalonia.Platform; |
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using SkiaSharp; |
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using CoreGraphics; |
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using UIKit; |
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namespace Avalonia.Skia |
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{ |
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internal partial class RenderTarget : IRenderTarget |
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{ |
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public SKSurface Surface { get; protected set; } |
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public virtual DrawingContext CreateDrawingContext() |
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{ |
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return |
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new DrawingContext( |
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new DrawingContextImpl(Surface.Canvas)); |
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} |
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public void Dispose() |
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{ |
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// Nothing to do here.
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} |
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} |
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internal class WindowRenderTarget : RenderTarget |
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{ |
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SKBitmap _bitmap; |
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int Width { get; set; } |
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int Height { get; set; } |
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public WindowRenderTarget() |
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{ |
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FixSize(); |
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} |
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private CGRect GetApplicationFrame() |
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{ |
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// if we are excluding Status Bar then we use ApplicationFrame
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// otherwise we use full screen bounds. Note that this must also match
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// the Skia/AvaloniaView!!!
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//
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bool excludeStatusArea = false; // TODO: make this configurable later
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if (excludeStatusArea) |
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{ |
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return UIScreen.MainScreen.ApplicationFrame; |
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} |
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else |
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{ |
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return UIScreen.MainScreen.Bounds; |
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} |
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} |
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private void FixSize() |
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{ |
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int width, height; |
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GetPlatformWindowSize(out width, out height); |
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if (Width == width && Height == height) |
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return; |
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Width = width; |
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Height = height; |
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if (Surface != null) |
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{ |
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Surface.Dispose(); |
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} |
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if (_bitmap != null) |
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{ |
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_bitmap.Dispose(); |
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} |
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_bitmap = new SKBitmap(width, height, SKImageInfo.PlatformColorType, SKAlphaType.Premul); |
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IntPtr length; |
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var pixels = _bitmap.GetPixels(out length); |
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// Wrap the bitmap in a Surface and keep it cached
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Surface = SKSurface.Create(_bitmap.Info, pixels, _bitmap.RowBytes); |
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} |
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private void GetPlatformWindowSize(out int w, out int h) |
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{ |
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var bounds = GetApplicationFrame(); |
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w = (int)bounds.Width; |
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h = (int)bounds.Height; |
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} |
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public override DrawingContext CreateDrawingContext() |
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{ |
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FixSize(); |
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var canvas = Surface.Canvas; |
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canvas.RestoreToCount(0); |
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canvas.Save(); |
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var screenScale = UIScreen.MainScreen.Scale; |
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canvas.Scale((float)screenScale, (float)screenScale); |
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canvas.Clear(SKColors.Red); |
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canvas.ResetMatrix(); |
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return new DrawingContext(new WindowDrawingContextImpl(this)); |
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} |
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public void Present() |
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{ |
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_bitmap.LockPixels(); |
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IntPtr length; |
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var pixels = _bitmap.GetPixels(out length); |
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const int bitmapInfo = ((int)CGBitmapFlags.ByteOrder32Big) | ((int)CGImageAlphaInfo.PremultipliedLast); |
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var bounds = GetApplicationFrame(); |
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var statusBarOffset = UIScreen.MainScreen.Bounds.Height - bounds.Height; |
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using (var colorSpace = CGColorSpace.CreateDeviceRGB()) |
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using (var bContext = new CGBitmapContext(pixels, _bitmap.Width, _bitmap.Height, 8, _bitmap.Width * 4, colorSpace, (CGImageAlphaInfo)bitmapInfo)) |
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using (var image = bContext.ToImage()) |
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using (var context = UIGraphics.GetCurrentContext()) |
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{ |
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// flip the image for CGContext.DrawImage
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context.TranslateCTM(0, bounds.Height + statusBarOffset); |
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context.ScaleCTM(1, -1); |
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context.DrawImage(bounds, image); |
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} |
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_bitmap.UnlockPixels(); |
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} |
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} |
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} |
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@ -1,23 +0,0 @@ |
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namespace Avalonia.Skia |
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{ |
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#if !DESKTOP
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// not sure we need this yet
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internal class WindowDrawingContextImpl : DrawingContextImpl |
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{ |
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WindowRenderTarget _target; |
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public WindowDrawingContextImpl(WindowRenderTarget target) |
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: base(target.Surface.Canvas) |
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{ |
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_target = target; |
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} |
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public override void Dispose() |
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{ |
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base.Dispose(); |
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_target.Present(); |
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} |
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} |
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#endif
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} |
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