Dan Walmsley
5 years ago
committed by
GitHub
GitHub
60 changed files with 926 additions and 210 deletions
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using System; |
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using System.Diagnostics; |
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using System.Drawing.Drawing2D; |
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using System.Security.Cryptography; |
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using Avalonia; |
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using Avalonia.Controls; |
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using Avalonia.LogicalTree; |
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using Avalonia.Media; |
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using Avalonia.Media.Imaging; |
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using Avalonia.Media.Immutable; |
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using Avalonia.Threading; |
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using Avalonia.Visuals.Media.Imaging; |
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namespace RenderDemo.Pages |
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{ |
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public class PathMeasurementPage : Control |
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{ |
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static PathMeasurementPage() |
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{ |
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AffectsRender<PathMeasurementPage>(BoundsProperty); |
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} |
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private RenderTargetBitmap _bitmap; |
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protected override void OnAttachedToLogicalTree(LogicalTreeAttachmentEventArgs e) |
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{ |
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_bitmap = new RenderTargetBitmap(new PixelSize(500, 500), new Vector(96, 96)); |
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base.OnAttachedToLogicalTree(e); |
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} |
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protected override void OnDetachedFromLogicalTree(LogicalTreeAttachmentEventArgs e) |
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{ |
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_bitmap.Dispose(); |
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_bitmap = null; |
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base.OnDetachedFromLogicalTree(e); |
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} |
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readonly IPen strokePen = new ImmutablePen(Brushes.DarkBlue, 10d, null, PenLineCap.Round, PenLineJoin.Round); |
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readonly IPen strokePen1 = new ImmutablePen(Brushes.Purple, 10d, null, PenLineCap.Round, PenLineJoin.Round); |
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readonly IPen strokePen2 = new ImmutablePen(Brushes.Green, 10d, null, PenLineCap.Round, PenLineJoin.Round); |
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readonly IPen strokePen3 = new ImmutablePen(Brushes.LightBlue, 10d, null, PenLineCap.Round, PenLineJoin.Round); |
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readonly IPen strokePen4 = new ImmutablePen(Brushes.Red, 1d, null, PenLineCap.Round, PenLineJoin.Round); |
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public override void Render(DrawingContext context) |
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{ |
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using (var ctxi = _bitmap.CreateDrawingContext(null)) |
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using (var bitmapCtx = new DrawingContext(ctxi, false)) |
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{ |
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ctxi.Clear(default); |
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var basePath = new PathGeometry(); |
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using (var basePathCtx = basePath.Open()) |
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{ |
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basePathCtx.BeginFigure(new Point(20, 20), false); |
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basePathCtx.LineTo(new Point(400, 50)); |
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basePathCtx.LineTo(new Point(80, 100)); |
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basePathCtx.LineTo(new Point(300, 150)); |
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basePathCtx.EndFigure(false); |
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} |
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bitmapCtx.DrawGeometry(null, strokePen, basePath); |
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var length = basePath.PlatformImpl.ContourLength; |
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if (basePath.PlatformImpl.TryGetSegment(length * 0.05, length * 0.2, true, out var dst1)) |
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bitmapCtx.DrawGeometry(null, strokePen1, dst1); |
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if (basePath.PlatformImpl.TryGetSegment(length * 0.2, length * 0.8, true, out var dst2)) |
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bitmapCtx.DrawGeometry(null, strokePen2, dst2); |
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if (basePath.PlatformImpl.TryGetSegment(length * 0.8, length * 0.95, true, out var dst3)) |
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bitmapCtx.DrawGeometry(null, strokePen3, dst3); |
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var pathBounds = basePath.GetRenderBounds(strokePen); |
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bitmapCtx.DrawRectangle(null, strokePen4, pathBounds); |
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} |
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context.DrawImage(_bitmap, |
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new Rect(0, 0, 500, 500), |
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new Rect(0, 0, 500, 500)); |
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base.Render(context); |
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} |
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} |
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} |
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using Avalonia.Interactivity; |
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using Avalonia.VisualTree; |
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namespace Avalonia.Input |
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{ |
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public class TappedEventArgs : RoutedEventArgs |
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{ |
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private readonly PointerEventArgs lastPointerEventArgs; |
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public TappedEventArgs(RoutedEvent routedEvent, PointerEventArgs lastPointerEventArgs) |
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: base(routedEvent) |
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{ |
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this.lastPointerEventArgs = lastPointerEventArgs; |
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} |
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public Point GetPosition(IVisual? relativeTo) => lastPointerEventArgs.GetPosition(relativeTo); |
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} |
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} |
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Compat issues with assembly Avalonia.Visuals: |
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InterfacesShouldHaveSameMembers : Interface member 'public void Avalonia.Platform.IDrawingContextImpl.PopBitmapBlendMode()' is present in the implementation but not in the contract. |
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InterfacesShouldHaveSameMembers : Interface member 'public void Avalonia.Platform.IDrawingContextImpl.PushBitmapBlendMode(Avalonia.Visuals.Media.Imaging.BitmapBlendingMode)' is present in the implementation but not in the contract. |
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InterfacesShouldHaveSameMembers : Interface member 'public System.Double Avalonia.Platform.IGeometryImpl.ContourLength' is present in the implementation but not in the contract. |
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InterfacesShouldHaveSameMembers : Interface member 'public System.Double Avalonia.Platform.IGeometryImpl.ContourLength.get()' is present in the implementation but not in the contract. |
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InterfacesShouldHaveSameMembers : Interface member 'public System.Boolean Avalonia.Platform.IGeometryImpl.TryGetPointAndTangentAtDistance(System.Double, Avalonia.Point, Avalonia.Point)' is present in the implementation but not in the contract. |
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InterfacesShouldHaveSameMembers : Interface member 'public System.Boolean Avalonia.Platform.IGeometryImpl.TryGetPointAtDistance(System.Double, Avalonia.Point)' is present in the implementation but not in the contract. |
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InterfacesShouldHaveSameMembers : Interface member 'public System.Boolean Avalonia.Platform.IGeometryImpl.TryGetSegment(System.Double, System.Double, System.Boolean, Avalonia.Platform.IGeometryImpl)' is present in the implementation but not in the contract. |
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Total Issues: 7 |
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@ -0,0 +1,57 @@ |
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namespace Avalonia.Visuals.Media.Imaging |
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{ |
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/// <summary>
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/// Controls the way the bitmaps are drawn together.
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/// </summary>
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public enum BitmapBlendingMode |
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{ |
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/// <summary>
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/// Source is placed over the destination.
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/// </summary>
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SourceOver, |
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/// <summary>
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/// Only the source will be present.
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/// </summary>
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Source, |
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/// <summary>
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/// Only the destination will be present.
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/// </summary>
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Destination, |
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/// <summary>
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/// Destination is placed over the source.
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/// </summary>
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DestinationOver, |
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/// <summary>
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/// The source that overlaps the destination, replaces the destination.
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/// </summary>
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SourceIn, |
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/// <summary>
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/// Destination which overlaps the source, replaces the source.
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/// </summary>
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DestinationIn, |
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/// <summary>
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/// Source is placed, where it falls outside of the destination.
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/// </summary>
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SourceOut, |
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/// <summary>
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/// Destination is placed, where it falls outside of the source.
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/// </summary>
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DestinationOut, |
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/// <summary>
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/// Source which overlaps the destination, replaces the destination.
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/// </summary>
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SourceAtop, |
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/// <summary>
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/// Destination which overlaps the source replaces the source.
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/// </summary>
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DestinationAtop, |
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/// <summary>
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/// The non-overlapping regions of source and destination are combined.
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/// </summary>
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Xor, |
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/// <summary>
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/// Display the sum of the source image and destination image.
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/// </summary>
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Plus, |
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} |
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} |
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using Avalonia.Platform; |
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using Avalonia.Visuals.Media.Imaging; |
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namespace Avalonia.Rendering.SceneGraph |
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{ |
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/// <summary>
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/// A node in the scene graph which represents an bitmap blending mode push or pop.
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/// </summary>
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internal class BitmapBlendModeNode : IDrawOperation |
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{ |
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/// <summary>
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/// Initializes a new instance of the <see cref="BitmapBlendModeNode"/> class that represents an
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/// <see cref="BitmapBlendingMode"/> push.
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/// </summary>
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/// <param name="bitmapBlend">The <see cref="BitmapBlendingMode"/> to push.</param>
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public BitmapBlendModeNode(BitmapBlendingMode bitmapBlend) |
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{ |
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BlendingMode = bitmapBlend; |
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} |
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/// <summary>
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/// Initializes a new instance of the <see cref="BitmapBlendNode"/> class that represents an
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/// <see cref="BitmapBlendingMode"/> pop.
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/// </summary>
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public BitmapBlendModeNode() |
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{ |
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} |
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/// <inheritdoc/>
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public Rect Bounds => Rect.Empty; |
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/// <summary>
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/// Gets the BitmapBlend to be pushed or null if the operation represents a pop.
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/// </summary>
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public BitmapBlendingMode? BlendingMode { get; } |
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/// <inheritdoc/>
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public bool HitTest(Point p) => false; |
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/// <summary>
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/// Determines if this draw operation equals another.
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/// </summary>
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/// <param name="opacity">The opacity of the other draw operation.</param>
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/// <returns>True if the draw operations are the same, otherwise false.</returns>
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/// <remarks>
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/// The properties of the other draw operation are passed in as arguments to prevent
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/// allocation of a not-yet-constructed draw operation object.
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/// </remarks>
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public bool Equals(BitmapBlendingMode? blendingMode) => BlendingMode == blendingMode; |
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/// <inheritdoc/>
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public void Render(IDrawingContextImpl context) |
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{ |
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if (BlendingMode.HasValue) |
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{ |
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context.PushBitmapBlendMode(BlendingMode.Value); |
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} |
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else |
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{ |
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context.PopBitmapBlendMode(); |
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} |
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} |
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public void Dispose() |
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{ |
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} |
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} |
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} |
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