unoplatform/uno 3.4.0 on GitHub

This 3.4 release is about adding support for WinUI controls, such as the hierarchical NavigationView, InfoBar, RadioButtons, ItemsRepeater and determinate ProgressRing. We are following the footsteps of the WinUI team to align more of the controls Uno provides with what is supported on Windows.

The combination of controls we are releasing with 3.4 release, the recently-announced Infragistics controls for Uno Platform, and Syncfusion charting, will give you as a developer a great toolset to tackle single-source web, desktop and mobile applications.

As with each release, we have also added significant number of features and fixed many bugs, with the help of members from the community.

Visit our blog post for additional details.

Hierarchical NavigationView support (@MartinZikmund, @dr1rrb, @davidjohnoliver)

Uno Platform has been including a version of the Navigation for quite a while in the Windows.UI.Xaml namespace. Recently, the WinUI team added support for an enhanced experience including hierarchical navigation, with the ability to expand and collapse menu items.

This new control is now available in the Microsoft.UI.Xaml namespace, to match with the Windows version of WinUI. The Windows.UI.Xaml version of the control will stay in Uno, but will not include additional features, only bug fixes as needed.

You can browse the documentation for the NavigationView on Microsoft docs.

Support for the WinUI 2.5 InfoBar control (@MartinZikmund)

The WinUI InfoBar control also has been imported in Uno Platform. It allows for applications to display app wide status messages to the users to be highly visible but non-intrusive, using customizable severity levels.
Here is an example of InfoBar visual:

You can browse the documentation for the InfoBar on Microsoft docs.

Support for WinUI RadioButtons (@jeromelaban, @dr1rrb)

Yet another WinUI control, this time to allow the DataBinding of an items source to a list of RadioButtons, this control lets users select one option from a collection of two or more mutually exclusive, but related, options.

You can browse the documentation for the RadioButtons on Microsoft docs.

Support for ItemsRepeater (@dr1rrb)

The ItemsRepeater is a new control from WinUI 2.x that provides an enhanced developer experience and end user experience when creating custom collection experiences using a flexible layout system, custom views, and virtualization.
We have ported the code from the ItemsRepeater to Uno, and it is useable on all our available platforms. It is used in Uno by the refreshed hierarchical NavigationView control, as well as the RadioButtons control.
Layouts are reusable components for which some (StaggeredLayout, WrapLayout) were released in Windows Community 6.1. Uno did not have support for the ItemsRepeater at the time, but those will be available soon to be reused in Uno.

You can browse the documentation for the ItemsRepeater on Microsoft docs.

Determinate ProgressRing (@kazo0)

WinUI 2.5 added support for a determinate mode for the progress ring, allowing for an arbitrary progress value to be provided. This control uses Lottie under the hood, and benefits from additional changes we included to get color changes in Lottie files.

You can browse the documentation for the ProgressRing control on Microsoft docs.

Upgrading from previous versions of Uno

There are no breaking changes for this release of Uno, but you'll need to upgrade the Uno.Core package to 2.1 in the UWP project to avoid nuget restore warnings.

This upgrade has been introduced to improve the compatibility of Uno.UI with Visual Studio 2019 16.9 Previews.

Other significant updates

Support for FileSavePicker on macOS (Thanks @snickler !)
Drag and Drop support for ListView (WebAssembly and Skia) (@dr1rrb)
Improved ImageBrush support (WebAssembly) (@carldebilly)
Support for SvgImageSource (WebAssembly) (@carldebilly)
TabView for iOS/Android/macOS (@MartinZikmund)
Memory and execution performance improvements (@jeromelaban)
Skia templates use .NET 5 by default (@jeromelaban)
Support for FlyoutPlacementModes (@davidjohnoliver)
Support for FrameworkElement.EffectiveViewportChanged event (@dr1rrb)
Support for Frame.SourcePageType and Frame.CurrentSourcePageType (@MartinZikmund)
Support for synchronized ItemsControl.Items with ItemSource (@MartinZikmund)
Custom colors support for Lottie files and MUX ProgressRing (@carldebilly)

You can view below the full changelog of this release

Features

Add a property to launch the debugger for XAML generation f347548
Add Load/Unload benchmark ba19901
Hierarchical NavigationView 3e85994
Improve reference checking memory leaks runtime tests 56245e6
Update the Skia template to use .NET 5.0 1cbf17a
WinUI RadioButtons e48de38
dragdrop: Add ability to raise a routed event only for a portion of the tree e183f1e
dragdrop: Add re-order support in ListView (managed only for now, i.e. wasm + skia) b79f6d8
dragdrop: Fix the drag and drop hit testing c2003d4
dragdrop: Import the ListView D&D event from generated code c43f6d6
dragdrop: Initial D&D events support on ListView aaf4309
effectiveviewport: Add support of the FrameworkElement.EffectiveViewportChanged event 4fbdee5
effectiveviewport: Add support on WASM d66c074
effectiveviewport: Enable mixins on iOS and fix csproj references d2861ff
effectiveviewport: Fix invalid parent viewport to local coordinate computation (was not inversed) 649c84e
effectiveviewport: Make sure to raise the UIElement.EffectiveViewportChanged on Arrange on Skia 3c896e5
effectiveviewport: Make the WASM layouting algorithm use the new LayoutInformation a0e8a13
effectiveviewport: Move the UIElement's layout properties to the LayoutInformation e98a417
effectiveviewport: On skia scrolling is now managed by the SCP and is backed by Visual.AnchorOffset instead of a RenderTransform c8ba949
effectiveviewport: Reuse the EffectiveViewport code for IFwElt 124c6d3
flyout: Implement EdgeAligned FlyoutPlacementModes 0941866
Frame: Support for SourcePageType and CurrentSourcePageType 650ea9b
imagebrush: Improved the support of ImageBrush on Wasm af15d91
iOS: Add DatePicker FeatureFlag 4966060
iOS: Add support for iOS 14 Picker style 9398d1b
iOS: Add TimePicker Feature Flag c332a25
iOS: Enabled feature to be toggled from resources 8f46629
iOS: Move OS version specific code 9171f2e
itemscontrol: Sync Items with ItemsSource 26cf7ab
itemsrepeater: [iOS] Enable clipping on the ScrollViewer 6a05d31
itemsrepeater: Add some missing classes 77dbf85
itemsrepeater: Brings more C++ code and begin integration with Uno 69bd34e
itemsrepeater: Do not throw exception for ScrollViewer.CurrentAnchor (always return null) 0cfbe74
itemsrepeater: First buildable version 🎉 8ea49c5
itemsrepeater: First item visible cd5c57d
itemsrepeater: Fix rebase issues 67b3a3c
itemsrepeater: Fix tracing 08b57ff
itemsrepeater: Initial import 357a7cc
itemsrepeater: Make the ItemRepeater available on netstandard 2.0 ec7f73c
itemsrepeater: Move files to their final place 9f79508
lottie: Added the ability of LottieVisualSource to download its content and assign it locally. b96d123
lottie: First implementation of theme properties for lottie files (custom colors) c31c32e
svg: Added support for SvgImageSource on Wasm 26c0b06
svg: Fixed for right signature of SvgImageSource.SetSourceAsync() with correct async result 1523a0d
themable_lottie: Renamed new classes using better names 620ea99
Implemented FileSavePicker on MacOS cfecbe8
Implemented FileSavePicker on MacOS a7b8e80
ItemsSource-bound ItemCollection 2b4d4aa
Naive implementation of UIElement.UpdateLayout af4370f
Set TImePicker default style to use legacy 38847a6
skia: Implement CompositionTarget.Rendering event 9b19af3

Performance Improvements

NativeFramePresenter: [Android] Don't detach pages in the backstack 7253faf
[Wasm] Improve DOM routed events dispatch performance f90906d
Improve the performance by creating temporary hard references in DependencyObjectStore 804e441

Bug Fixes

contentcontrol: [macOS/iOS] Support binding DataContext in ContentTemplate c72c24e
dragdrop: Add missing file for ListView drag and drop support 2252868
dragdrop: Avoid double subscription (since ClearItem not always invoked) + make sure to subscribe event on CanDragItems change 9b135ac
dragdrop: Don't use the Move on ObservableCollection in reorder (avoid reflection and acts like UWP) + Other mix PR review 95b3438
dragdrop: Fix iOS compilation issues d23b51a
dragdrop: Fix NET461 build 353ba00
dragdrop: Fix possible null ref in Drag and Drop aa9c8b4
dragdrop: Fix selection lost when reodering items fc475d3
dragdrop: Fix support of TabView reordering 6157b15
effectiveviewport: Fix build macOS 1aff65c
effectiveviewport: Fix effective viewport computation when not top/left aligned 42c8f2d
effectiveviewport: Fix iOS not computing properly viewport when not top/left aligned 16792f7
effectiveviewport: Fix LayoutSlot always being at 0,0 on iOS 3f04ec7
effectiveviewport: Fix tracing compilation issues 2048452
effectiveviewport: NativeScrollContentPresenter are not intiilaized (do not register for effective viewport propagation) 6c74c32
events: Fix XAML event registration in DataTemplate 4d8709e
flyout: [WASM/Skia] Place Flyout correctly when attached to TextBlock 59035b4
flyout: Use fallback positions correctly aa0366b
imagesource: Fixed a regression on BitmapSource when using SetStreamAsync() 79e750c
iOS: [Commandbar] SetNavigationBar throwing exception when null 2340480
ItemsRepeater: Remove Assert for non-virtualizing layouts f512cb7
leak: Alter TargetPropertyPath and ElementNameSubject ade644a
leak: Ensure that ItemCollection is unregistering from ItemSource 2058063
leak: Memory leak caused by FrameworkTemplate owner reference propagation d3eb2c9
Leak: iOS Popup is leaking through the popup panel fdf821e
lottie_android: Reverted to Newtonsoft.Json on Android because of a crash in Com.Airbnb.Android.Lottie 4ca1fd5
lottie_wasm: Fixed a regression in Lottie support for Wasm -> a generated javascript code was invalid. 6568429
pointers: Fix handled tapped event are being re-interpretted by parent 7c8f9de
ScrollViewer: Add missing ScrollViewer resources 75a74db
[iOS][macOS] SamplesApp should include UNO_HAS_UIELEMENT_IMPLICIT_PINNING ff947ff
Keep track of current view type even if content is set to null 1850e89
Missing mime type for icudt.dat for .NET5 support 9ffc959
SamplesApp runner should unset the DataContext to release registrations b71462d
listview: Fix bad state when manipulating ListView.Items a3113f2
SyncGenerator: Properly convert INotifyPropertyChanged b8942dd
Use ObservableCollection instead on List when needed 3bf9d68
listview: [iOS] Take padding into account for item breadth 9c5170b
listview: Don't use recycled container for IsOwnContainer items 4cbecf8
selector: Support setting SelectedValue when SelectedValuePath is set 31ed853
TabView: Surface container-related methods 05b42b6
wasm_customevent: Fixed regression after refactoring of PR #4650 1eca2da
xBind: Invalid xBind initialization on controls without code-behind base class 3a67db4
Add proper encoding to lt/gt characters in PackageDiffIgnore 7e95c85
Added FileTypeChoices setter to PackageDiffIgnore f64fd65
Adjust non-FrameworkElement support for top-level properties generation 7398dc9
FileTypeChoices prop to use a private setter 3a381c5
xaml: Ensure reference equality of x:Name resource by different access methods efcda72
Adjust Nuget override for Uno.Foundation.Runtime.WebAssembly da2f7c1
Apply workaround for dotnet/runtime#45078 ede6542
wasm: Invalid deserialization in registerPointerEventsOnView 660df52
[Wasm] Adjust assembly loading for .NET 5 58400e5
Add missing slash character in namespaces declarations referring to Uno URIs 8fa795b
Fix compilation 42a77a2
Fix invalid LayoutSlot caching on .net 47f16b0
Fix keyboard support on skia which raises an exception for unkown keys on WPF 888f84d
FIxed potential concurrency issue with image subscription to payload. 8192bde
Remove HasThreadAccessOverride from public shared contract 6e24c4c
Use NSFileManager for proper folder paths 779a1f2
Flyout: WASM - Fixed build failing when attempting to create a flyout containing a control using a themeresource 1d56759
itemrepeater: CI fixes e2bcb53
itemsreapeater: Not virtualizing + ci issue 2ff75c5
itemsrepeater: Avoid layout cycling 1d4726a
itemsrepeater: Build 13a624e
itemsrepeater: Disable MUX runtime tests on UAP + fix namespace conflict 1074ee4
itemsrepeater: Do not clear the ClippedFrame until next layout pass 0991018
itemsrepeater: Fix invalid insert (broke the backward generation) 049ee5e
itemsrepeater: Fix minor issue with c++ 2 cs 61ae212
itemsrepeater: Fix rebase issues a600994
OrientationSensor: fixed orientation sensor not working properly with android versions older than oreo e48c60a
pointers: Make sure to clear the pressed state of pressed original source 49e9cc4
wasm_image: Added a way for the HTML to report when are loaded or on error. 4b084aa
Adjust Uno.Skia package name for WinUI a845112
TimePicker LightDismissOverlayBackgroundProperty 38246fa
ViewHelper.Android not considering IgnoreTextScaleFactor at runtime 7bc5961
itemsrepeater: Few more adjustements b2742ed
itemsrepeater: Fix build 6fbe5dc
itemsrepeater: Fix iOS support 96b7c7a
itemsrepeater: Fix method visibility 67ed183
itemsrepeater: Fix RELEASE build ad4906d
itemsrepeater: Minors fixes for CI build 7110cd4
itemsrepeater: Misc fixes 172a3df
itemsrepeater: Misc fixes for tests 6cab0b9
winui: Adjust WebAssembly support for WinUI 3 dotnet new template 6cc152a
winui: Adjust WebAssembly support for WinUI 3 dotnet new template a132e76
wizard: UWP project is not set as startup by default f55b36b
xaml: Resolve markup extensions in Xaml correctly 667fdee
xLoad: Fix invalid generated code when x:Load, StaticResources and Visibility are used aac07fe
BindingExpression will now apply the FallbackValue when a Converter returns DependencyProperty.UnsetValue. 3a9b164
CoreDispatcher.RunAsync with CT (internal) was throwing when invoked from BG thread 1a9b851
Dispatcher.HasThreadAccess always return true on Skia 9a8e99c
Do not re-invoke the IFwEltHelper.Initialize in Panel's ctor dc3a83b
Misc fixes for the ItemsRepeater runtime tests 7fb34e4
Re-added setter to FileTypeChoices 88114f5

unoplatform/uno 3.4.0 3.4 on GitHub