v0.85.1

Bug fixes

• Fix TooltipTheme.decoration so it applies to controls using ft.Tooltip(...) when the tooltip does not explicitly set decoration or bgcolor (#6432, #6482) by @ndonkoHenri.
• Fix flet-geolocator.Geolocator reliability on web and desktop: get_last_known_position() no longer crashes with TypeError: argument after ** must be a mapping, not NoneType and now returns Optional[GeolocatorPosition]; get_current_position() no longer hangs forever on web (Dart-side workaround for the upstream geolocator_web 4.1.3 inMicroseconds/inMilliseconds timeout typo) and uses sensible web defaults (time_limit: 30s, maximum_age: 5m); the previously-dropped configuration argument now actually reaches getCurrentPosition on the Dart side; the position stream is gated behind a registered on_position_change/on_error handler (with cancel-on-update to prevent leaks); and platform exceptions (LocationServiceDisabledException, PermissionDeniedException, PermissionDefinitionsNotFoundException, PermissionRequestInProgressException, PositionUpdateException, TimeoutException) are now translated into actionable error messages and surfaced to Python as RuntimeError without the default Exception: prefix (#6487) by @FeodorFitsner.
• Fix PEP 508 markers on flet's oauthlib/httpx deps not actually excluding those packages under Pyodide: the flet build web package platform has been renamed from Pyodide to Emscripten to match platform.system() inside the Pyodide runtime, and the markers now use platform_system != 'Emscripten', so the exclusion works both via flet build and a direct micropip.install("flet") in a Pyodide REPL. Requires serious_python >= 1.0.0, which is now pinned in the flet build template (#6492) by @FeodorFitsner.

v0.85.0

What's Changed

New features and improvements

• Add configurable built-in, custom, hidden, and normal/fullscreen-specific controls to flet-video; Video.take_screenshot() for capturing video frames; and Video.on_position_change/Video.on_duration_change events (#6463) by @ndonkoHenri.
• Add declarative ft.Router component for @ft.component apps with nested routes, layout routes with outlets, dynamic segments, optional segments, splats, custom regex constraints, data loaders, active link detection, authentication patterns, and manage_views=True mode for view-stack navigation with swipe-back gestures and AppBar back button on mobile (#6406) by @FeodorFitsner.
• Add ft.use_dialog() hook for declarative dialog management from within @ft.component functions, with frozen-diff reactive updates and automatic open/close lifecycle (#6335) by @FeodorFitsner.
• Add scrollable, pin_leading_to_top, and pin_trailing_to_bottom properties to NavigationRail for scrollable content with optional pinned leading/trailing controls (#1923, #6356) by @ndonkoHenri.
• Add scroll support to ResponsiveRow for responsive layouts whose content exceeds the available height (#2590, #6417) by @ndonkoHenri.
• Add issues property to CodeEditor (along with Issue and IssueType types) for displaying code analysis error markers in the gutter, with analysis performed on the Python side (#6407) by @FeodorFitsner.
• Add Page.pop_views_until() to pop multiple views and return a result to the destination view (#6326, #6347) by @brunobrown.
• Make NavigationDrawerDestination.label accept custom controls and add NavigationDrawerTheme.icon_theme (#6379, #6395) by @ndonkoHenri.
• Add local_position and global_position to DragTargetEvent, deprecating x, y, and offset (#6387, #6401) by @ndonkoHenri.
• Added PCM16 streaming to AudioRecorder, including on_stream chunks and direct upload support via AudioRecorderUploadSettings (#5858, #6423) by @ndonkoHenri.
• Add Page.theme_animation_style for customizing the duration and curve of the theme cross-fade between theme and dark_theme (or disabling it with AnimationStyle.no_animation()), exposing Flutter's MaterialApp.themeAnimationStyle (#6476) by @FeodorFitsner.

Bug fixes

• Fix control diffing for controls nested inside @value dataclass objects so they keep the nearest control parent/page context, and restore optional structured properties that are cleared to None and later set again (#6463) by @ndonkoHenri.
• Fix Page and View vertical centering when scrolling is enabled, including hidden scrollbars, so short content remains centered in the viewport (#6446, #6450) by @ndonkoHenri.
• Reduce Linux memory retention when repeatedly removing flet_video.Video controls by linking media_kit video apps against mimalloc in run and build flows (#6164, #6416) by @ndonkoHenri.
• Fix flet build and flet publish dependency parsing for project.dependencies and Poetry constraints with </<=, and add coverage for normalized requirement handling (#6332, #6340) by @td3447.
• Fix CodeEditor background not filling the entire area when expand=True (#6407) by @FeodorFitsner.
• Handle unbounded width in ResponsiveRow with an explicit error, treat child controls with col=0 as hidden, and clarify Container expansion behavior when alignment is set (#1951, #3805, #5209, #6354) by @ndonkoHenri.
• Fix find_platform_image selecting incompatible icon formats (e.g. .icns on Windows) by ranking glob results per target platform (#6381) by @HG-ha.
• Fix page.window.destroy() taking several seconds to close Windows desktop apps when prevent_close is enabled (#5459, #6428) by @ndonkoHenri.
• Fix Page.show_drawer(), close_drawer(), and root/top view accessors (appbar, drawer, navigation_bar, controls, ...) failing with TypeError under Page.render_views() by unwrapping component-wrapped views and normalizing single-view returns (#6413, #6414) by @FeodorFitsner.
• Fix auto_scroll on scrollable controls silently doing nothing unless scroll was also explicitly set (#6397, #6404) by @ndonkoHenri.
• Fix Flet web returning index.html with a 200 OK for missing asset files; requests for paths with a file extension other than .html now return a proper 404, while route-like paths still fall back to index.html for SPA routing (#6425) by @ndonkoHenri.
• Fix Lottie failing to load local asset files on Windows desktop (and unreliably on other desktop platforms), so animations referenced by src="file.json" from the app's assets/ directory now display correctly (#6386, #6426) by @ndonkoHenri.
• Fix Page.on_resize and Page.on_media_change not firing after mobile orientation changes (#6457, #6423) by @ndonkoHenri.
• Fix flet pack desktop packaging so Windows and Linux bundles include the expected client archive, and Windows taskbar pins point to the packed app instead of the cached flet.exe (#5151, #6403) by @ndonkoHenri.
• Fix environment variable priority in flet build template: inherit from Platform.environment and use putIfAbsent for FLET_* variables so pre-set system env vars are not overwritten (#6394) by @Bahtya.
• Fix NavigationBarDestination.selected_icon rendering wrongly when provided as an Icon control (#6460, #6468) by @ndonkoHenri.
• Fix 3- and 4-digit hex color shorthand (e.g. #c00, #fc00) rendering as invisible by expanding them to their full 6/8-digit forms (#6419, #6421) by @ndonkoHenri.
• Fix LineChartEvent.spots returning undecoded MessagePack extension values instead of LineChartEventSpot objects (#6443, #6468) by @ndonkoHenri.
• Fix LineChart (and other charts) silently dropping custom ChartAxisLabel entries whose value matched a tick only after floating-point rounding (e.g. 0.1, 0.2, 0.3) by switching label lookup to a tolerance-based comparison scaled to the axis interval (#6445, #6459) by @KangZhaoKui.
• Fix absolute-path src (e.g. Image(src="/images/foo.svg")) breaking on web when the app is mounted at a non-root URL, pass data:/blob: URIs through the asset resolver unchanged, preserve origin-relative semantics when assets_dir is unset, and add a window.flet.assetsDir JS-interop bridge so embedding hosts can supply assets_dir to the top-level FletApp (#6470) by @FeodorFitsner.
• Fix unbounded browser memory growth in MatplotlibChart on Flutter web (CanvasKit/WASM) during animations by replacing the Canvas + capture() rendering path with a dedicated MatplotlibChartCanvas widget that composites matplotlib diff frames in CPU memory; also fixes Safari async PNG decode (EncodingError: Loading error.), a render/figure.savefig() race that crashed the toolbar Download, and pan/zoom playback lag from buffered pointer events (#6473) by @FeodorFitsner.
• Fix Duration fields (and other int-typed properties) silently decoding to 0 when given a Python float (e.g. Duration(seconds=2.0) causing Page.theme_animation_style to end instantly) by coercing double to int in the Dart-side parseInt (#6478, #6480) by @FeodorFitsner.

Documentation

• Improve CrocoDocs API reference rendering with formatted signatures, modern type annotations, and cleaner cross-reference labels for extension packages ([#6442](ht...

v0.85.0.dev4

What's Changed

• perf(flet-charts): faster MatplotlibChart rendering on native, simpler Python loop by @FeodorFitsner in #6479
• fix: Duration fields decode to 0 when passed as float (#6478) by @FeodorFitsner in #6480

Full Changelog: v0.85.0.dev3...v0.85.0.dev4

v0.85.0.dev3

What's Changed

• feat(flet-audio-recorder): Add streaming and upload support to AudioRecorder by @ndonkoHenri in #6423
• fix: preserve vertical alignment in scrollable Page and View by @ndonkoHenri in #6450
• fix: resolve absolute-path src against assets_dir on web by @FeodorFitsner in #6470
• feat(flet-video): support direct mutation of playlist, frame screenshots and video-controls configuration by @ndonkoHenri in #6463
• fix: NavigationBarDestination.selected_icon renders wrongly when set to a Control by @ndonkoHenri in #6468
• fix(flet-charts): prevent unbounded browser memory growth in MatplotlibChart by @FeodorFitsner in #6473
• feat: add Page.theme_animation_style for customizing theme transitions by @FeodorFitsner in #6476

Full Changelog: v0.85.0.dev2...v0.85.0.dev3

v0.85.0.dev2

What's Changed

• chore: bump serious_python to 0.9.12 in build template by @FeodorFitsner in #6461

Full Changelog: v0.85.0.dev1...v0.85.0.dev2

v0.85.0.dev1

What's Changed

• Docusaurus 3.10 upgrade with fast mode by @FeodorFitsner in #6389
• feat: Page.pop_views_until() to pop multiple views and return a result to the destination view by @brunobrown in #6347
• fix: select platform-compatible icon format in find_platform_image by @HG-ha in #6381
• fix(ResponsiveRow): handle unbounded width and child controls with col=0 by @ndonkoHenri in #6354
• feat: add issues property to CodeEditor for Python-side analysis by @FeodorFitsner in #6407
• fix: ScrollableControl.auto_scroll not working when scroll property is not explicitly set by @ndonkoHenri in #6404
• feat: add local_position/global_position to DragTargetEvent by @ndonkoHenri in #6401
• feat: make NavigationDrawerDestination.label accept custom controls by @ndonkoHenri in #6395
• fix: resolve component-wrapped views in Page root/top view accessors by @FeodorFitsner in #6414
• chore: Move Linux build and client dependencies in flet.utils to further simplify CI workflow by @ndonkoHenri in #6383
• fix: respect pre-set environment variables in build template by @Bahtya in #6394
• fix(flet pack): Windows taskbar shortcut pointing to wrong .exe by @ndonkoHenri in #6403
• fix: reduce Linux video memory retention with mimalloc linking by @ndonkoHenri in #6416
• feat: add hot-reload watcher to CrocoDocs CLI by @ndonkoHenri in #6402
• fix: avoid delay when page.window.destroy() closes Windows apps by @ndonkoHenri in #6428
• fix(flet-lottie): local asset files not loading on Windows desktop by @ndonkoHenri in #6426
• chore!: remove deprecated module-level margin/padding/border/border_radius helpers by @ndonkoHenri in #6425
• feat: add scroll support to ResponsiveRow by @ndonkoHenri in #6417
• fix(linux): link libpthread alongside mimalloc.o by @FeodorFitsner in #6435
• Tests to generate screenshots/gifs for material controls examples. by @InesaFitsner in #6438
• Add declarative Router with view-stack navigation by @FeodorFitsner in #6406
• feat(flet-map): add image overlay support by @ndonkoHenri in #6421
• fix(flet-charts): match axis labels with float tolerance by @FeodorFitsner in #6459
• docs: improve CrocoDocs API signature and cross-reference rendering by @ndonkoHenri in #6442

New Contributors

• @brunobrown made their first contribution in #6347
• @HG-ha made their first contribution in #6381
• @Bahtya made their first contribution in #6394

Full Changelog: v0.85.0.dev0...v0.85.0.dev1

v0.85.0.dev0

What's Changed

• Add declarative reorderable list example by @FeodorFitsner in #6374
• Very minor correction in calculator tutorial by @GrCOTE7 in #6373
• Update screenshot sizes for Control docs by @InesaFitsner in #6378
• fix: Update line count in To-Do app tutorial by @GrCOTE7 in #6375
• fix(flet-cli): correct dependency parsing (#6332) by @FeodorFitsner in #6376
• feat: add scrollable and pinned leading/trailing support to NavigationRail by @ndonkoHenri in #6356
• feat: add use_dialog hook for declarative dialog management by @FeodorFitsner in #6335
• Fix 0.85.0 integration tests by @FeodorFitsner in #6396

New Contributors

• @GrCOTE7 made their first contribution in #6373

Full Changelog: v0.84.0...v0.85.0.dev0

v0.84.0

What's Changed

• Flet v0.84.0 by @FeodorFitsner in #6370

Full Changelog: v0.83.1...v0.84.0

v0.84.0.dev0

What's Changed

• Migrate Flet docs from MkDocs to Docusaurus by @FeodorFitsner in #6359
• Migrate examples to projects by @InesaFitsner in #6355
• fix: flet pack fails on macOS after move to GitHub releases by @FeodorFitsner in #6361
• Fix integration tests for v0.84.0 by @FeodorFitsner in #6365
• Blog post for Flet 0.84.0 release by @FeodorFitsner in #6364

Full Changelog: v0.83.1...v0.84.0.dev0

v0.83.1

What's Changed

• fix: replace deprecated delta_x/delta_y with local_delta.x/y in examples and docs by @Krishnachaitanyakc in #6344
• fix: clear inherited validation rules for overridden dataclass fields by @ndonkoHenri in #6350

New Contributors

• @Krishnachaitanyakc made their first contribution in #6344

Full Changelog: v0.83.0...v0.83.1