| 1 | using Avalonia; |
| 2 | using Avalonia.Controls; |
| 3 | using Avalonia.Media; |
| 4 | using Avalonia.Media.Imaging; |
| 5 | |
| 6 | namespace CascadeIDE.Tests.VisualVerification; |
| 7 | |
| 8 | /// <summary> |
| 9 | /// Рендер Avalonia-контрола в PNG (software <see cref="RenderTargetBitmap"/>). |
| 10 | /// Для headless-тестов (<see cref="Avalonia.Headless.XUnit.AvaloniaFact"/>) не требуется видимое окно, если выполнены Measure/Arrange. |
| 11 | /// </summary> |
| 12 | public static class ControlVisualCapture |
| 13 | { |
| 14 | /// <summary>Снимает контрол в память PNG. Размер задаётся явно (DIP).</summary> |
| 15 | public static byte[] CaptureControlToPng(Control control, Size size, Vector dpi) |
| 16 | { |
| 17 | control.Width = size.Width; |
| 18 | control.Height = size.Height; |
| 19 | control.Measure(size); |
| 20 | control.Arrange(new Rect(size)); |
| 21 | |
| 22 | var pixelSize = new PixelSize( |
| 23 | Math.Max(1, (int)Math.Ceiling(size.Width)), |
| 24 | Math.Max(1, (int)Math.Ceiling(size.Height))); |
| 25 | |
| 26 | using var rtb = new RenderTargetBitmap(pixelSize, dpi); |
| 27 | rtb.Render(control); |
| 28 | |
| 29 | using var ms = new MemoryStream(); |
| 30 | rtb.Save(ms); |
| 31 | return ms.ToArray(); |
| 32 | } |
| 33 | } |
| 34 | |
View only · write via MCP/CIDE