- animation/layout/render cycle is now managed from a central location
- animations are now throttled if animation/layout/render pass takes longer than a frame which previously caused a soft-freeze with input not being processed
- the public API is trimmed to make sure that we can make other planned changes during the 11.x support cycle
"Changelog":
- IClock is hidden and is planned to be replaced later
- Animator classes are hidden and are planned to be refactored later
- IAnimation members are hidden, it's supposed to be a marker interface for Style.Animations collection now, to start animations manually use Animation.RunAsync
- Sealed several classes in Avalonia.Animation namespace
- Spring class is removed from the public API (it wasn't possible to use it directly in a meaningful way anyway)
- Sealed brushes, transforms, effects and drawings
- Removed separate dispatcher priorities for Layout and Composition, everything now happens from a central place with Render priority (same as WPF)
- - some private "hook" priorities are added for now, those will be removed later
- IRenderLoop is hidden and removed from locator
- IRenderer is hidden (the plan is to remove that concept later)
- - Renderer.Start/Stop exposed as StartRendering/StopRendering on the toplevel (will be on a CompositionTarget/PresentationSource-like type later)
- - Renderer.Diagnistics exposed as RendererDiagnostics (same)
- - Renderer is no longer created by the platform code and is created by TopLevel itself
- - From the user-code hit-testing should be done by VisualExtensions.GetVisual(s)At, which has the same features
- - For unit tests a separate IHitTester interface is added which can be changed for a particular toplevel
- ILayoutManager is hidden
- - LayoutManager.ExecuteLayoutPass() exposed as TopLevel.UpdateLayout()
- Custom animators now have a separate base class that only deals with interpolation
Minor improvements:
- Compositor has a mode that doesn't use DispatcherTimers, useful for unit tests
- Introduced ScopedTestBase that auto-resets the locator when test is finished
- Don't make selection follow focus
- Move all keyboard interaction into `ListBox`
- Move all pointer interaction into `ListBoxItem`
- Added `ItemsControl.ItemsControlFromItemContaner` as in WPF
This was signalled for removal in #9553, but I was hesitant to do it because it will be in use by a lot of code in order to override `StyleKey`. Instead of removing it, deprecate it and provide a virtual `StyledElement.StyleKeyOverride` property as the supported way of overriding a control's style key.
- Don't set `KeyboardNavigationMode.Once` on `ItemsPresenter`
- Instead set it on `ListBox` (more controls to come)
- Make `TabOnceActiveElement` follow `Selection.AnchorIndex` in `SelectingItemsControl` and set it on `ItemsControl` itself
- Check `CanFocus` in `FocusManager.SetFocusedElement`
- Check for `IsEffectivelyVisible` in `CanFocus`
- Clear focus when control made invisible
- Update tests that relied on unfocusable controls being focused
One shouldn't call `ClearContainer` on a container that is an item. Adjusted `SelectingItemsControlTests` because selection is actually maintained on move with containers hold their own `IsSelected` state.
Fixes#11128
Which exposes the resize reason and new client size. Required renaming `PlatformResizeReason` to `WindowResizeReason`. Made `TopLevel.HandleResized` method internal.
Allow overriding the default behavior of item containers in styles or in `ItemContainerTheme`. To do this, use `SetCurrentValue` to set the properties, only if the properties are not already set (i.e. from a style). This also requires us to clear the current value when the container is cleared (styles won't be affected as `AvaloniaObject.ClearValue` only clears local or `SetCurrentValue` values).
Rather than using the `ISelectable` interface to communicate container selection from the `SelectingItemsControl` to the container, use the `SelectingItemsControl.IsSelected` attached property, setting it with `SetCurrentValue` so that bindings defined in a style or item container theme can override the selection. Required an extra virtual `ContainerForItemPreparedOverride` method on `ItemsControl`.
Nikita Tsukanov
Steven Kirk
Dan Walmsley
Benedikt Stebner
Max Katz
Tom Edwards
Tim
Julien Lebosquain