Optimize converters for GridLength, ColumnDefinition, and RowDefinition#20048
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PureWeen merged 11 commits intodotnet:inflight/currentfrom Jun 13, 2025
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Hey there @symbiogenesis! Thank you so much for your PR! Someone from the team will get assigned to your PR shortly and we'll get it reviewed. |
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Foda
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Jun 5, 2024
jsuarezruiz
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Jun 10, 2024
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note that these converters probably aren't used in Release mode with XamlC enabled |
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Will this help with hot reload scenarios? They run when that is happening? |
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moved to description. |
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mattleibow
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Jun 12, 2025
StephaneDelcroix
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Jun 12, 2025
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when all test passes, it's ok for me
MartyIX
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Jun 12, 2025
| public const ushort StyleLocal = 0x100; | ||
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| public static readonly SetterSpecificity DefaultValue = new SetterSpecificity(0); | ||
| public static readonly SetterSpecificity LowestAppliedValue = new SetterSpecificity(1); |
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Am I missing something or is this not used anywhere? Perhaps some leftover of a rebase?
The base branch was changed.
PureWeen
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Jun 13, 2025
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…on (#20048) * add benchmarks * set CanConvertTo to be consistent with the ColumnDefinitionTypeConverter * optimize GridLength conversion * optimize grid definition conversion * enable nullable types * fix build * reduce diff * Slightly better * Update RowDefinition.cs * Even better --------- Co-authored-by: Edward Miller <symbiogenisis@outlook.com> Co-authored-by: Matthew Leibowitz <mattleibow@live.com>
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…on (#20048) * add benchmarks * set CanConvertTo to be consistent with the ColumnDefinitionTypeConverter * optimize GridLength conversion * optimize grid definition conversion * enable nullable types * fix build * reduce diff * Slightly better * Update RowDefinition.cs * Even better --------- Co-authored-by: Edward Miller <symbiogenisis@outlook.com> Co-authored-by: Matthew Leibowitz <mattleibow@live.com>
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…on (#20048) * add benchmarks * set CanConvertTo to be consistent with the ColumnDefinitionTypeConverter * optimize GridLength conversion * optimize grid definition conversion * enable nullable types * fix build * reduce diff * Slightly better * Update RowDefinition.cs * Even better --------- Co-authored-by: Edward Miller <symbiogenisis@outlook.com> Co-authored-by: Matthew Leibowitz <mattleibow@live.com>
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…on (#20048) * add benchmarks * set CanConvertTo to be consistent with the ColumnDefinitionTypeConverter * optimize GridLength conversion * optimize grid definition conversion * enable nullable types * fix build * reduce diff * Slightly better * Update RowDefinition.cs * Even better --------- Co-authored-by: Edward Miller <symbiogenisis@outlook.com> Co-authored-by: Matthew Leibowitz <mattleibow@live.com>
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…on (#20048) * add benchmarks * set CanConvertTo to be consistent with the ColumnDefinitionTypeConverter * optimize GridLength conversion * optimize grid definition conversion * enable nullable types * fix build * reduce diff * Slightly better * Update RowDefinition.cs * Even better --------- Co-authored-by: Edward Miller <symbiogenisis@outlook.com> Co-authored-by: Matthew Leibowitz <mattleibow@live.com>
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…on (#20048) * add benchmarks * set CanConvertTo to be consistent with the ColumnDefinitionTypeConverter * optimize GridLength conversion * optimize grid definition conversion * enable nullable types * fix build * reduce diff * Slightly better * Update RowDefinition.cs * Even better --------- Co-authored-by: Edward Miller <symbiogenisis@outlook.com> Co-authored-by: Matthew Leibowitz <mattleibow@live.com>
PureWeen
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…on (#20048) * add benchmarks * set CanConvertTo to be consistent with the ColumnDefinitionTypeConverter * optimize GridLength conversion * optimize grid definition conversion * enable nullable types * fix build * reduce diff * Slightly better * Update RowDefinition.cs * Even better --------- Co-authored-by: Edward Miller <symbiogenisis@outlook.com> Co-authored-by: Matthew Leibowitz <mattleibow@live.com>
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…on (#20048) * add benchmarks * set CanConvertTo to be consistent with the ColumnDefinitionTypeConverter * optimize GridLength conversion * optimize grid definition conversion * enable nullable types * fix build * reduce diff * Slightly better * Update RowDefinition.cs * Even better --------- Co-authored-by: Edward Miller <symbiogenisis@outlook.com> Co-authored-by: Matthew Leibowitz <mattleibow@live.com>
PureWeen
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…on (#20048) * add benchmarks * set CanConvertTo to be consistent with the ColumnDefinitionTypeConverter * optimize GridLength conversion * optimize grid definition conversion * enable nullable types * fix build * reduce diff * Slightly better * Update RowDefinition.cs * Even better --------- Co-authored-by: Edward Miller <symbiogenisis@outlook.com> Co-authored-by: Matthew Leibowitz <mattleibow@live.com>
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For more information about inflight process check https://github.com/dotnet/maui/wiki/Inflight-Branch-Process # .NET MAUI Release Notes - Inflight/Candidate Branch ## What's Changed ### MAUI Product Fixes * [iOS] CarouselView with CarouselViewHandler2 make app crash when Loop="False" and user scroll to the last position - fixes #26863 by @kubaflo in #26868 * Fixes Setting BackgroundColor to null does not actually changes BackgroundColor - fixes #22914 and #19576 by @jgonzalez-gft in #22917 * Fixed the picker title's color - fixes #16737 by @kubaflo in #23075 * [android] Fallback to default icons in SearchHandler by @aheubusch in #25067 * ScrollView's Background on iOS - fixes #24016 by @kubaflo in #25541 * [iOS] Enabled MultiTouch Support for Handling Multi-Touch Points in GraphicsView - fixes #29461 by @prakashKannanSf3972 in #29895 * Optimize converters for GridLength, ColumnDefinition, and RowDefinition - performance improvement by @emiller in #20048 * Add defensive IsAlive check to Android ViewExtensions.OnUnloaded - fixes #28051 by @jfversluis in #29934 * [Windows] Fixed runtime update issue for SearchBar PlaceholderColor and BackgroundColor - fixes #29962 by @Tamilarasan-Paranthaman in #29965 * Weak subscription to CanExecuteChange events - fixes #16124 by @sneumaier in #29837 * [iOS, Mac] Fix for downsized image retaining original dimensions in GraphicsView - fixes #30006 by @SyedAbdulAzeemSF4852 in #30007 * [Android] Prevent Picker from Gaining Focus on Touch - fixes #19739, #8546, #13503, #24862, #28121, #21704, #15394 by @bhavanesh2001 in #29068 * Fix CV1 GridItemsLayout centering single item AND Fix Empty view not resizing when bounds change - fixes #29595, #29634 by @albyrock87 in #29639 ### Testing * [Testing] Feature Matrix UITest Cases for Button by @TamilarasanSF4853 in #29803 * [Testing] Feature matrix UITest Cases for BoxView Control by @HarishKumarSF4517 in #29808 * [Testing] Enable HandlerDoesNotLeak for Button and ProgressBar by @bhavanesh2001 in #29896 * [Testing] Add Validation Test For Issue28051 On Android by @prakashKannanSf3972 in #30026 * [Testing] Fixed Test case failure in PR 30115 - [2025/06/23] Candidate by @HarishKumarSF4517 in #30136 ### Dependency Updates * Bump to 1.7.250606001 of WindowsAppSDK by @sneumaier in #29915 ### Housekeeping * [housekeeping] Update namespaces in HostApp and Shared tests projects by @bhavanesh2001 in #29904 * Update SetterSpecificity.cs Remove Extra Line From Bad Merge by @sneumaier in #29987 * Revert - Fixed the Label not sized correctly on Android by @Ahamed-Ali in #30023 * Revert "Fixes Setting BackgroundColor to null does not actually changes BackgroundColor #22914 (#22917)" by @mattleibow in #30031 * [create-pull-request] automated change by @github-actions[bot] in #30019 * [create-pull-request] automated change by @github-actions[bot] in #30043 * [create-pull-request] automated change by @github-actions[bot] in #30078 * Update Controls.TestCases.HostApp.csproj by @HarishKumarSF4517 in #30124 ## New Contributors * @albyrock87 made their first contribution in #29639 * @SyedAbdulAzeemSF4852 made their first contribution in #30007 * @emiller made their first contribution in #20048 * @jgonzalez-gft made their first contribution in #22917 * @aheubusch made their first contribution in #25067 **Full Changelog**: https://github.com/dotnet/maui/compare/main..inflight/candidate
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Some simple optimizations to these common converters.
There were already tests around these converters here and here.
EDIT June 2025
I ran this just to check, and maybe my machine is faster (probably) or maui got better (probably), so the difference is not as great, but still better.
Before this PR:
After this PR (and a small tweak to reduce allocations):
OLD NUMBERS*
Before:
After: