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@ -4,6 +4,7 @@ |
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using System; |
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using Avalonia.Controls.Platform; |
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using Avalonia.Controls.Presenters; |
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using Avalonia.Controls.Primitives.PopupPositioning; |
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using Avalonia.Interactivity; |
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using Avalonia.Media; |
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using Avalonia.Platform; |
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@ -18,7 +19,9 @@ namespace Avalonia.Controls.Primitives |
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/// </summary>
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public class PopupRoot : WindowBase, IInteractive, IHostedVisualTreeRoot, IDisposable, IStyleHost |
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{ |
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private readonly TopLevel _parent; |
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private IDisposable _presenterSubscription; |
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private PopupPositionerParameters _positionerParameters; |
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/// <summary>
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/// Initializes static members of the <see cref="PopupRoot"/> class.
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@ -45,6 +48,7 @@ namespace Avalonia.Controls.Primitives |
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public PopupRoot(TopLevel parent, IAvaloniaDependencyResolver dependencyResolver) |
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: base(parent.PlatformImpl.CreatePopup(), dependencyResolver) |
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{ |
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_parent = parent; |
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} |
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/// <summary>
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@ -74,33 +78,6 @@ namespace Avalonia.Controls.Primitives |
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/// <inheritdoc/>
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public void Dispose() => PlatformImpl?.Dispose(); |
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/// <summary>
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/// Moves the Popups position so that it doesnt overlap screen edges.
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/// This method can be called immediately after Show has been called.
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/// </summary>
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public void SnapInsideScreenEdges() |
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{ |
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var screen = (VisualRoot as WindowBase)?.Screens?.ScreenFromPoint(Position); |
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if (screen != null) |
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{ |
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var scaling = VisualRoot.RenderScaling; |
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var bounds = PixelRect.FromRect(Bounds, scaling); |
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var screenX = Position.X + bounds.Width - screen.Bounds.X; |
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var screenY = Position.Y + bounds.Height - screen.Bounds.Y; |
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if (screenX > screen.Bounds.Width) |
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{ |
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Position = Position.WithX(Position.X - (screenX - screen.Bounds.Width)); |
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} |
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if (screenY > screen.Bounds.Height) |
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{ |
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Position = Position.WithY(Position.Y - (screenY - screen.Bounds.Height)); |
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} |
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} |
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} |
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/// <inheritdoc/>
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protected override void OnTemplateApplied(TemplateAppliedEventArgs e) |
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{ |
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@ -142,5 +119,85 @@ namespace Avalonia.Controls.Primitives |
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} |
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} |
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} |
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void UpdatePosition() |
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{ |
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PlatformImpl?.PopupPositioner.Update(_positionerParameters); |
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} |
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public void ConfigurePosition(Control target, PlacementMode placement, Point offset, |
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PopupPositioningEdge anchor = PopupPositioningEdge.None, |
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PopupPositioningEdge gravity = PopupPositioningEdge.None) |
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{ |
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// We need a better way for tracking the last pointer position
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var pointer = _parent.PointToClient(_parent.PlatformImpl.MouseDevice.Position); |
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_positionerParameters.Offset = offset; |
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_positionerParameters.ConstraintAdjustment = PopupPositionerConstraintAdjustment.All; |
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if (placement == PlacementMode.Pointer) |
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{ |
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_positionerParameters.AnchorRectangle = new Rect(pointer, new Size(1, 1)); |
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_positionerParameters.Anchor = PopupPositioningEdge.BottomRight; |
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_positionerParameters.Gravity = PopupPositioningEdge.BottomRight; |
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} |
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else |
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{ |
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if (target == null) |
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throw new InvalidOperationException("Placement mode is not Pointer and PlacementTarget is null"); |
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var matrix = target.TransformToVisual(_parent); |
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if (matrix == null) |
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throw new InvalidCastException("Target control is not in the same tree as the popup parent"); |
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_positionerParameters.AnchorRectangle = new Rect(default, target.Bounds.Size) |
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.TransformToAABB(matrix.Value); |
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if (placement == PlacementMode.Right) |
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{ |
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_positionerParameters.Anchor = PopupPositioningEdge.TopRight; |
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_positionerParameters.Gravity = PopupPositioningEdge.BottomRight; |
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} |
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else if (placement == PlacementMode.Bottom) |
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{ |
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_positionerParameters.Anchor = PopupPositioningEdge.BottomLeft; |
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_positionerParameters.Gravity = PopupPositioningEdge.BottomRight; |
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} |
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else if (placement == PlacementMode.Left) |
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{ |
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_positionerParameters.Anchor = PopupPositioningEdge.TopLeft; |
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_positionerParameters.Gravity = PopupPositioningEdge.BottomLeft; |
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} |
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else if (placement == PlacementMode.Top) |
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{ |
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_positionerParameters.Anchor = PopupPositioningEdge.TopLeft; |
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_positionerParameters.Gravity = PopupPositioningEdge.TopRight; |
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} |
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else if (placement == PlacementMode.AnchorAndGravity) |
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{ |
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_positionerParameters.Anchor = anchor; |
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_positionerParameters.Gravity = gravity; |
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} |
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else |
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throw new InvalidOperationException("Invalid value for Popup.PlacementMode"); |
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} |
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if (_positionerParameters.Size != default) |
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UpdatePosition(); |
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} |
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/// <summary>
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/// Carries out the arrange pass of the window.
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/// </summary>
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/// <param name="finalSize">The final window size.</param>
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/// <returns>The <paramref name="finalSize"/> parameter unchanged.</returns>
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protected override Size ArrangeOverride(Size finalSize) |
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{ |
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using (BeginAutoSizing()) |
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{ |
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_positionerParameters.Size = finalSize; |
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UpdatePosition(); |
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} |
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return base.ArrangeOverride(PlatformImpl?.ClientSize ?? default(Size)); |
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} |
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} |
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} |
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Nikita Tsukanov
7 years ago