Bump flet from 0.84.0 to 0.85.1

[dependabot]

Bumps flet from 0.84.0 to 0.85.1.

Release notes

Sourced from flet's releases.

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

... (truncated)

Changelog

Sourced from flet's changelog.

0.85.1

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.

0.85.0

New features

• 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.

Improvements

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.

... (truncated)

Commits

• 88ac763 refactor(build): rename web build platform from Pyodide to Emscripten (#6...
• a3ba9cb fix: TooltipTheme decoration not applying to Control.tooltip (#6482)
• 56c93c2 Prepare 0.85.1 release: flet-geolocator reliability fixes (#6487)
• 2f9527d Palette Editor example (#6490)
• d37a9cb Gallery categories (#6489)
• 492881c Add blog post for Flet 0.85.0 release (#6486)
• b1499da Merge pull request #6485 from flet-dev/release/v0.85.0
• d6496c8 Merge main
• e0352ad fix: Duration fields decode to 0 when passed as float (#6478) (#6480)
• 41506a0 perf(flet-charts): faster MatplotlibChart rendering on native, simpler Python...
• Additional commits viewable in compare view

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

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Ensure that dependencies are being submitted on PR branches and consider enabling retry-on-snapshot-warnings. See the documentation for more information and troubleshooting advice.

Scanned Files

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[codspeed-hq]

Merging this PR will not alter performance

✅ 12 untouched benchmarks

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_{Comparing dependabot/pip/flet-0.85.1 (ae49ef7) with main (c51dd57)}