Add a sentinel value for TextStyle.height
#149049
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justinmc
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LGTM 👍
Just to talk it through, I wonder if you couldn't also solve this problem within TextStyle.copyWith?
static TextStyle copyWith({
double? height = kTextHeightNone,
...
}) {
return TextStyle(
// height: height ?? this.height,
height: height == kTextHeightNone ? this.height : null,
);
},So now you can reset height by explicitly passing null:
myTextStyle.copyWith(
height: null,
);| textDirection: TextDirection.ltr, | ||
| text: const TextSpan( | ||
| style: TextStyle(fontSize: 10, height: 1000), | ||
| children: <TextSpan> [TextSpan(text: 'A', style: TextStyle(height: kTextHeightNone))] |
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myTextStyle.copyWith(height: null);No this does not reset the height to null. Even if does, |
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* master: (115 commits) Roll Flutter Engine from 4adf453b6d68 to 19707e811b60 (1 revision) (flutter#149291) disable Impeller on external texture test. (flutter#149292) Roll Flutter Engine from 8d5d14a1db95 to 4adf453b6d68 (12 revisions) (flutter#149290) Update 3.22.1 release notes to include missing fix. (flutter#148999) Manual roll Flutter Engine from 60968ee3bde7 to 8d5d14a1db95 (1 revision) (flutter#149263) Reverts "Prevent LayoutBuilder from rebuilding more than once (flutter#147856)" (flutter#149279) Unskip expression evaluation test (flutter#149253) temporarily disable SemanticsAction tests to unblock engine change (flutter#149274) Adds benchmark for rrect_blur. (flutter#149261) Prevent LayoutBuilder from rebuilding more than once (flutter#147856) Add test for inherited_theme.0.dart (flutter#149120) Update progress_indicator.dart to indicate the adaptive option is for both macOS and iOS (flutter#145246) _ModalScopeStatus as InheritedModel (flutter#149022) Add test for radio.toggleable.0.dart (flutter#149153) Add a sentinel value for `TextStyle.height` (flutter#149049) Remove dynamic_layouts from issue template (flutter#149252) Roll Flutter Engine from 30aa720d4999 to 60968ee3bde7 (1 revision) (flutter#149255) Roll Flutter Engine from b26e1b023cdb to 30aa720d4999 (7 revisions) (flutter#149249) Roll Packages from a933c30 to 31d3329 (6 revisions) (flutter#149246) Clean leak in editable_text_test.dart. (flutter#149223) ...
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* master: (115 commits) Roll Flutter Engine from 4adf453b6d68 to 19707e811b60 (1 revision) (flutter#149291) disable Impeller on external texture test. (flutter#149292) Roll Flutter Engine from 8d5d14a1db95 to 4adf453b6d68 (12 revisions) (flutter#149290) Update 3.22.1 release notes to include missing fix. (flutter#148999) Manual roll Flutter Engine from 60968ee3bde7 to 8d5d14a1db95 (1 revision) (flutter#149263) Reverts "Prevent LayoutBuilder from rebuilding more than once (flutter#147856)" (flutter#149279) Unskip expression evaluation test (flutter#149253) temporarily disable SemanticsAction tests to unblock engine change (flutter#149274) Adds benchmark for rrect_blur. (flutter#149261) Prevent LayoutBuilder from rebuilding more than once (flutter#147856) Add test for inherited_theme.0.dart (flutter#149120) Update progress_indicator.dart to indicate the adaptive option is for both macOS and iOS (flutter#145246) _ModalScopeStatus as InheritedModel (flutter#149022) Add test for radio.toggleable.0.dart (flutter#149153) Add a sentinel value for `TextStyle.height` (flutter#149049) Remove dynamic_layouts from issue template (flutter#149252) Roll Flutter Engine from 30aa720d4999 to 60968ee3bde7 (1 revision) (flutter#149255) Roll Flutter Engine from b26e1b023cdb to 30aa720d4999 (7 revisions) (flutter#149249) Roll Packages from a933c30 to 31d3329 (6 revisions) (flutter#149246) Clean leak in editable_text_test.dart. (flutter#149223) ...
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Fixes: flutter#58765 The rationale for the choice of the sentinel value: flutter/engine#52940 The exact value of `kTextHeightNone` should be kept as an implementation detail. It's unfortunate that the current value `0` is dangerously close to `TextStyle.height`'s valid domain. If we ever allow `TextStyle.height == 0` (which totally makes sense) then it shouldn't be difficult to change the const.
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flutter/flutter@c85fa6a...7eebe29 2024-05-30 [email protected] Roll Packages from 31d3329 to 910fabb (11 revisions) (flutter/flutter#149321) 2024-05-30 [email protected] Roll Flutter Engine from fb64b9a4e6f2 to 2fedfd3cc6e5 (2 revisions) (flutter/flutter#149320) 2024-05-30 [email protected] Fix `Slider` throws an error when `_labelPainter` text is null (flutter/flutter#148462) 2024-05-30 [email protected] Roll Flutter Engine from 5500c1a3969a to fb64b9a4e6f2 (1 revision) (flutter/flutter#149307) 2024-05-30 [email protected] Enable `explicitChildNodes` for the `AlertDialog` content (flutter/flutter#149130) 2024-05-30 [email protected] Roll Flutter Engine from 0c95e85dfbf4 to 5500c1a3969a (1 revision) (flutter/flutter#149304) 2024-05-30 [email protected] Roll Flutter Engine from 19707e811b60 to 0c95e85dfbf4 (1 revision) (flutter/flutter#149300) 2024-05-30 [email protected] Roll Flutter Engine from 4adf453b6d68 to 19707e811b60 (1 revision) (flutter/flutter#149291) 2024-05-30 [email protected] disable Impeller on external texture test. (flutter/flutter#149292) 2024-05-30 [email protected] Roll Flutter Engine from 8d5d14a1db95 to 4adf453b6d68 (12 revisions) (flutter/flutter#149290) 2024-05-30 [email protected] Update 3.22.1 release notes to include missing fix. (flutter/flutter#148999) 2024-05-30 [email protected] Manual roll Flutter Engine from 60968ee3bde7 to 8d5d14a1db95 (1 revision) (flutter/flutter#149263) 2024-05-29 98614782+auto-submit[bot]@users.noreply.github.com Reverts "Prevent LayoutBuilder from rebuilding more than once (#147856)" (flutter/flutter#149279) 2024-05-29 [email protected] Unskip expression evaluation test (flutter/flutter#149253) 2024-05-29 [email protected] temporarily disable SemanticsAction tests to unblock engine change (flutter/flutter#149274) 2024-05-29 [email protected] Adds benchmark for rrect_blur. (flutter/flutter#149261) 2024-05-29 [email protected] Prevent LayoutBuilder from rebuilding more than once (flutter/flutter#147856) 2024-05-29 [email protected] Add test for inherited_theme.0.dart (flutter/flutter#149120) 2024-05-29 [email protected] Update progress_indicator.dart to indicate the adaptive option is for both macOS and iOS (flutter/flutter#145246) 2024-05-29 [email protected] _ModalScopeStatus as InheritedModel (flutter/flutter#149022) 2024-05-29 [email protected] Add test for radio.toggleable.0.dart (flutter/flutter#149153) 2024-05-29 [email protected] Add a sentinel value for `TextStyle.height` (flutter/flutter#149049) 2024-05-29 [email protected] Remove dynamic_layouts from issue template (flutter/flutter#149252) 2024-05-29 [email protected] Roll Flutter Engine from 30aa720d4999 to 60968ee3bde7 (1 revision) (flutter/flutter#149255) 2024-05-29 [email protected] Roll Flutter Engine from b26e1b023cdb to 30aa720d4999 (7 revisions) (flutter/flutter#149249) 2024-05-29 [email protected] Roll Packages from a933c30 to 31d3329 (6 revisions) (flutter/flutter#149246) If this roll has caused a breakage, revert this CL and stop the roller using the controls here: https://autoroll.skia.org/r/flutter-packages Please CC [email protected],[email protected],[email protected] on the revert to ensure that a human is aware of the problem. To file a bug in Packages: https://github.com/flutter/flutter/issues/new/choose To report a problem with the AutoRoller itself, please file a bug: https://issues.skia.org/issues/new?component=1389291&template=1850622 Documentation for the AutoRoller is here: https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
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Fixes: #58765
The rationale for the choice of the sentinel value: flutter/engine#52940
The exact value of
kTextHeightNoneshould be kept as an implementation detail. It's unfortunate that the current value0is dangerously close toTextStyle.height's valid domain. If we ever allowTextStyle.height == 0(which totally makes sense) then it shouldn't be difficult to change the const.Pre-launch Checklist
///).If you need help, consider asking for advice on the #hackers-new channel on Discord.