Tom Edwards

Ignore child margin when positioning a popup

8

This PR brings an overlooked aspect of WPF's popup positioning to Avalonia. The margins of a popup's child are now ignored when positioning the popup, but still count toward the...

Add `DrawingImage.Frame`

2

This is a new property which gets or sets a rectangular region of `Drawing`, in device independent pixels, to display when rendering the image. The value can be used to...

Popups do not forward events to their parent windows

2

**Describe the bug** The `PopupRoot` class [is explicitly designed to pass `RoutedEvents` to its parent window](https://github.com/AvaloniaUI/Avalonia/blob/825e0cc1633603c2cc2fa65a06404215b105d9c1/src/Avalonia.Controls/Primitives/PopupRoot.cs#L69-L75). It does not do so, because its parent is not a window but a...

Unify selection event handling for all `SelectingItemsControl` types plus `TreeView`

15

This PR substantially refactors selection logic to achieve a consistent experience which adapts to user expectations on different input devices. Behaviour is unchanged for standard mouse input, but touch and...

### Describe the bug See title. `Error MC3104 The value 'max-width:400' is not a valid literal value for 'Avalonia.Styling.StyleQuery?'. ControlCatalog (netstandard2.0)` ### To Reproduce This can be reproduced in Avalonia's...

### Describe the bug Error MC3104 is emitted when assigning a delegate which is not compatible with `EventHandler` to a property. `Error MC3104 The value 'CustomPlacementCallback' is not a valid...