There are still a few bugs around scrollbar behavior, and maybe Grid. To
see them, add a long item in the middle of VirtualizationTest's items,
resize the window to require a scrollbar and scroll up and down.
In Release build in main Avalonia assemblies (couldn't do it in
Avalonia.Markup.Xaml due to warnings in OmniXaml). To do this, fixed a
number of warnings.
Rather than repainting whenever, this adds a render loop which is called
N times per second. IRenderQueueManager and ITopLevelRenderer have been
removed, replaced by IRenderer.
Instead of `ContentPresenter`. This fixes a memory leak whereby
`DropDown` wasn't correctly parenting the `Rectangle` created for
`SelectionBoxItem` when the selected item is a control. Fixes#706.
After items are added or removed then the virtualizing panel must be
remeasured. It's usually not remeasured if the available size is the
same as on the last measure as that causes an infinite loop; this adds a
`ForceInvalidateMeasure` to `IVirtualizingPanel` which will force a
remeasure even if the available size hasn't changed. Also adds tests for
the behavior.
`ExpressionSubject` wasn't a good name as the important thing it isn't
convert an `ExpressionObserver` into an `ISubject`. The important thing
it does is insert an `IValueConverter` into the pipeline.
- Don't log an error when the target for the root ExpressionNode is
null. This is usually because the `DataContext` hasn't been set up yet
and it spewed a load of useless error messages.
- Add a Description field to `ExpressionObserver` that can be used in
the case of e.g. #control bindings to record the whole expression (with
the "#control" part) rather than just the part tracked by the
`ExpressionObserver`.
Jeremy Koritzinsky
Steven Kirk
Wiesław Šoltés
Dan Walmsley
Steven Kirk
AndrewSt
Nikita Tsukanov