Wiesław Šoltés
9 years ago
7 changed files with 244 additions and 84 deletions
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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 Android.Graphics; |
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using Android.Views; |
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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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private readonly IPlatformHandle _hwnd; |
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Bitmap _bitmap; |
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int Width { get; set; } |
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int Height { get; set; } |
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public WindowRenderTarget(IPlatformHandle hwnd) |
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{ |
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_hwnd = hwnd; |
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FixSize(); |
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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 = Bitmap.CreateBitmap(width, height, Bitmap.Config.Argb8888); |
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Surface = SKSurface.Create(width, height, SKImageInfo.PlatformColorType, SKAlphaType.Premul, _bitmap.LockPixels(), width * 4); |
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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 surfaceView = _hwnd as SurfaceView; |
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w = surfaceView.Width; |
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h = surfaceView.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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canvas.Clear(SKColors.Red); |
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canvas.ResetMatrix(); |
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return |
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new DrawingContext( |
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new WindowDrawingContextImpl(this)); |
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} |
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public void Present() |
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{ |
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var surfaceView = _hwnd as SurfaceView; |
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Canvas canvas = null; |
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try |
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{ |
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canvas = surfaceView.Holder.LockCanvas(null); |
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_bitmap.UnlockPixels(); |
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canvas.DrawBitmap(_bitmap, 0, 0, null); |
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} |
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catch (Exception) |
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{ |
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} |
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finally |
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{ |
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if (canvas != null) |
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surfaceView.Holder.UnlockCanvasAndPost(canvas); |
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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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@ -0,0 +1,132 @@ |
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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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#if WIN32
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using Avalonia.Win32.Interop; |
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#endif
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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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|
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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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private readonly IPlatformHandle _hwnd; |
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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(IPlatformHandle hwnd) |
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{ |
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_hwnd = hwnd; |
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FixSize(); |
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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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#if WIN32
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UnmanagedMethods.RECT rc; |
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UnmanagedMethods.GetClientRect(_hwnd.Handle, out rc); |
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w = rc.right - rc.left; |
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h = rc.bottom - rc.top; |
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#else
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throw new NotImplementedException(); |
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#endif
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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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canvas.Clear(SKColors.Red); |
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canvas.ResetMatrix(); |
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return |
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new DrawingContext( |
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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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#if WIN32
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UnmanagedMethods.BITMAPINFO bmi = new UnmanagedMethods.BITMAPINFO(); |
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bmi.biSize = UnmanagedMethods.SizeOf_BITMAPINFOHEADER; |
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bmi.biWidth = _bitmap.Width; |
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bmi.biHeight = -_bitmap.Height; // top-down image
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bmi.biPlanes = 1; |
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bmi.biBitCount = 32; |
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bmi.biCompression = (uint)UnmanagedMethods.BitmapCompressionMode.BI_RGB; |
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bmi.biSizeImage = 0; |
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IntPtr hdc = UnmanagedMethods.GetDC(_hwnd.Handle); |
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int ret = UnmanagedMethods.SetDIBitsToDevice(hdc, |
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0, 0, |
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(uint)_bitmap.Width, (uint)_bitmap.Height, |
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0, 0, |
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0, (uint)_bitmap.Height, |
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pixels, |
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ref bmi, |
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(uint)UnmanagedMethods.DIBColorTable.DIB_RGB_COLORS); |
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UnmanagedMethods.ReleaseDC(_hwnd.Handle, hdc); |
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#else
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throw new NotImplementedException(); |
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#endif
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_bitmap.UnlockPixels(); |
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} |
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} |
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} |
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