Set SliverResizingHeader's maxScrollObstructionExtent to minExtent #162955
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The maxScrollObstructionExtent of a Sliver denotes the "maximum extent by which this sliver can reduce the area in which content can scroll if the sliver were pinned at the edge.". See also the rest of the documentation of this field. In the case of SliverResizingHeader, like with SliverPersistentHeader, we expect this value to be minExtent. A use case is provided in the referenced issue. Fixes flutter#162661.
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victorsanni
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LGTM! The only nit I have is that punctuating the comments in the test might make them easier to read. But thanks for the PR.
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Hi, I tried to address it. Thanks to you for the review |
Piinks
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This also LGTM! Thanks @pathconnected and welcome! 🎉
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Roll Flutter from 1659206 to 2e570ca (75 revisions) flutter/flutter@1659206...2e570ca 2025-02-27 engine-flutter-autoroll@skia.org Roll Skia from ac08df9c8d82 to e5a33102401c (1 revision) (flutter/flutter#164288) 2025-02-27 engine-flutter-autoroll@skia.org Roll Skia from 6018dff0233a to ac08df9c8d82 (1 revision) (flutter/flutter#164275) 2025-02-27 engine-flutter-autoroll@skia.org Roll Dart SDK from 4a218fbffc80 to fcda71ce147b (1 revision) (flutter/flutter#164276) 2025-02-27 engine-flutter-autoroll@skia.org Roll Skia from 0f2e106c9abc to 6018dff0233a (1 revision) (flutter/flutter#164266) 2025-02-27 robert.ancell@canonical.com Add windowing channel support to Linux embedder (flutter/flutter#163180) 2025-02-27 engine-flutter-autoroll@skia.org Roll Dart SDK from 7fa5901bd8a3 to 4a218fbffc80 (2 revisions) (flutter/flutter#164260) 2025-02-27 engine-flutter-autoroll@skia.org Roll Skia from fdd97386193e to 0f2e106c9abc (4 revisions) (flutter/flutter#164259) 2025-02-27 codefu@google.com Run more builds faster (flutter/flutter#164125) 2025-02-27 737941+loic-sharma@users.noreply.github.com Increase customer test timeout to 60 minutes (flutter/flutter#164239) 2025-02-27 jason-simmons@users.noreply.github.com Reland "Add a buildtools directory and move third_party/ninja to the project root in order to match the expectations of depot_tools" (flutter/flutter#164240) 2025-02-27 liama@google.com Use the Dart isolate ownership API on the root isolate (flutter/flutter#163703) 2025-02-26 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from g-2SJtblPjjaH7Egy... to 1elkOxihZuTEiTXzY... (flutter/flutter#164243) 2025-02-26 robert.ancell@canonical.com Show Linux driver information in flutter doctor (flutter/flutter#163980) 2025-02-26 34871572+gmackall@users.noreply.github.com Implement opacity `FlutterMutator` for hcpp (flutter/flutter#164147) 2025-02-26 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from g-2SJtblPjjaH7Egy... to 1elkOxihZuTEiTXzY... (flutter/flutter#164232) 2025-02-26 engine-flutter-autoroll@skia.org Roll Skia from 47b84f354604 to fdd97386193e (8 revisions) (flutter/flutter#164221) 2025-02-26 jonahwilliams@google.com [Impeller] Reland: move AHB check into Flutter main, don't disable ImageReader on 29. (flutter/flutter#164201) 2025-02-26 engine-flutter-autoroll@skia.org Roll Dart SDK from 80865748abe0 to 7fa5901bd8a3 (3 revisions) (flutter/flutter#164226) 2025-02-26 68449066+zijiehe-google-com@users.noreply.github.com Update fuchsia_test_scripts_version to the latest version (flutter/flutter#164123) 2025-02-26 brackenavaron@gmail.com Guard against zero item extent for carousel (flutter/flutter#163310) 2025-02-26 jonahwilliams@google.com [Impeller] work around for crashy Nexus 5 Driver. (flutter/flutter#164040) 2025-02-26 98614782+auto-submit[bot]@users.noreply.github.com Reverts "Add a buildtools directory and move third_party/ninja to the project root in order to match the expectations of depot_tools (#163890)" (flutter/flutter#164209) 2025-02-26 48155875+Michae1Weiss@users.noreply.github.com Add localization for `Back` and `Cancel` buttons in CupertinoNavigationBar (flutter/flutter#162581) 2025-02-26 30870216+gaaclarke@users.noreply.github.com Added compilation failure if a max ubo size is exceeded (flutter/flutter#164038) 2025-02-26 engine-flutter-autoroll@skia.org Roll Skia from 5336e20498d9 to 47b84f354604 (2 revisions) (flutter/flutter#164188) 2025-02-26 jason-simmons@users.noreply.github.com Add a buildtools directory and move third_party/ninja to the project root in order to match the expectations of depot_tools (flutter/flutter#163890) 2025-02-26 engine-flutter-autoroll@skia.org Roll Skia from 3ce6f25dc13e to 5336e20498d9 (9 revisions) (flutter/flutter#164174) 2025-02-26 engine-flutter-autoroll@skia.org Roll Dart SDK from b8292dfeaa67 to 80865748abe0 (9 revisions) (flutter/flutter#164168) 2025-02-26 dkwingsmt@users.noreply.github.com [Engine] Remove dead code for RoundedSuperellipse (flutter/flutter#164163) 2025-02-26 jonahwilliams@google.com [Impeller] detect mediatek soc and fall back to GLES. (flutter/flutter#164126) 2025-02-26 jonahwilliams@google.com [Impeller] make DLOG into LOG for startup errors. (flutter/flutter#164110) 2025-02-26 15619084+vashworth@users.noreply.github.com Intercept error when iOS 18.4 crashes with JIT mode and give guided error (flutter/flutter#164072) 2025-02-26 98614782+auto-submit[bot]@users.noreply.github.com Reverts "[Impeller] move AHB check to Vulkan, use Vulkan surface on 29. (#164109)" (flutter/flutter#164166) 2025-02-26 zanderso@users.noreply.github.com Run new gallery transition perf benchmark on Galaxy S24 (flutter/flutter#163665) 2025-02-26 jonahwilliams@google.com [Impeller] move AHB check to Vulkan, use Vulkan surface on 29. (flutter/flutter#164109) 2025-02-26 chris@bracken.jp [iOS] Add platform view to integration_test example (flutter/flutter#164144) 2025-02-26 dominik@honnef.co Fix minor issues in documentation of WidgetsApp (flutter/flutter#163942) 2025-02-26 louisehsu@google.com Fix extra numbers showing up when enabling VoiceControl (flutter/flutter#163593) 2025-02-26 cloud@pathconnected.net Set SliverResizingHeader's maxScrollObstructionExtent to minExtent (flutter/flutter#162955) 2025-02-26 engine-flutter-autoroll@skia.org Roll Dart SDK from aea6fff33f06 to b8292dfeaa67 (1 revision) (flutter/flutter#163973) 2025-02-26 flar@google.com [DisplayList] Delete all legacy Skia-oriented method overloads in DlCanvas (flutter/flutter#164054) 2025-02-25 polinach@google.com Clean up leak tracker instrumentation tech debt. (flutter/flutter#164070) 2025-02-25 magder@google.com Revert "Marks Linux_pixel_7pro service_extensions_test to be flaky" (flutter/flutter#163882) 2025-02-25 magder@google.com Check if simctl is installed before trying to list devices or runtimes (flutter/flutter#163895) 2025-02-25 magder@google.com Update dragDevices doc to include default PointerDeviceKind.trackpad (flutter/flutter#163898) 2025-02-25 reidbaker@google.com Update multiple flutters benchmark test to latest gradle and agp and gradle defined dependencies (flutter/flutter#164029) ...
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Roll Flutter from 1659206 to 2e570ca (75 revisions) flutter/flutter@1659206...2e570ca 2025-02-27 engine-flutter-autoroll@skia.org Roll Skia from ac08df9c8d82 to e5a33102401c (1 revision) (flutter/flutter#164288) 2025-02-27 engine-flutter-autoroll@skia.org Roll Skia from 6018dff0233a to ac08df9c8d82 (1 revision) (flutter/flutter#164275) 2025-02-27 engine-flutter-autoroll@skia.org Roll Dart SDK from 4a218fbffc80 to fcda71ce147b (1 revision) (flutter/flutter#164276) 2025-02-27 engine-flutter-autoroll@skia.org Roll Skia from 0f2e106c9abc to 6018dff0233a (1 revision) (flutter/flutter#164266) 2025-02-27 robert.ancell@canonical.com Add windowing channel support to Linux embedder (flutter/flutter#163180) 2025-02-27 engine-flutter-autoroll@skia.org Roll Dart SDK from 7fa5901bd8a3 to 4a218fbffc80 (2 revisions) (flutter/flutter#164260) 2025-02-27 engine-flutter-autoroll@skia.org Roll Skia from fdd97386193e to 0f2e106c9abc (4 revisions) (flutter/flutter#164259) 2025-02-27 codefu@google.com Run more builds faster (flutter/flutter#164125) 2025-02-27 737941+loic-sharma@users.noreply.github.com Increase customer test timeout to 60 minutes (flutter/flutter#164239) 2025-02-27 jason-simmons@users.noreply.github.com Reland "Add a buildtools directory and move third_party/ninja to the project root in order to match the expectations of depot_tools" (flutter/flutter#164240) 2025-02-27 liama@google.com Use the Dart isolate ownership API on the root isolate (flutter/flutter#163703) 2025-02-26 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from g-2SJtblPjjaH7Egy... to 1elkOxihZuTEiTXzY... (flutter/flutter#164243) 2025-02-26 robert.ancell@canonical.com Show Linux driver information in flutter doctor (flutter/flutter#163980) 2025-02-26 34871572+gmackall@users.noreply.github.com Implement opacity `FlutterMutator` for hcpp (flutter/flutter#164147) 2025-02-26 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from g-2SJtblPjjaH7Egy... to 1elkOxihZuTEiTXzY... (flutter/flutter#164232) 2025-02-26 engine-flutter-autoroll@skia.org Roll Skia from 47b84f354604 to fdd97386193e (8 revisions) (flutter/flutter#164221) 2025-02-26 jonahwilliams@google.com [Impeller] Reland: move AHB check into Flutter main, don't disable ImageReader on 29. (flutter/flutter#164201) 2025-02-26 engine-flutter-autoroll@skia.org Roll Dart SDK from 80865748abe0 to 7fa5901bd8a3 (3 revisions) (flutter/flutter#164226) 2025-02-26 68449066+zijiehe-google-com@users.noreply.github.com Update fuchsia_test_scripts_version to the latest version (flutter/flutter#164123) 2025-02-26 brackenavaron@gmail.com Guard against zero item extent for carousel (flutter/flutter#163310) 2025-02-26 jonahwilliams@google.com [Impeller] work around for crashy Nexus 5 Driver. (flutter/flutter#164040) 2025-02-26 98614782+auto-submit[bot]@users.noreply.github.com Reverts "Add a buildtools directory and move third_party/ninja to the project root in order to match the expectations of depot_tools (#163890)" (flutter/flutter#164209) 2025-02-26 48155875+Michae1Weiss@users.noreply.github.com Add localization for `Back` and `Cancel` buttons in CupertinoNavigationBar (flutter/flutter#162581) 2025-02-26 30870216+gaaclarke@users.noreply.github.com Added compilation failure if a max ubo size is exceeded (flutter/flutter#164038) 2025-02-26 engine-flutter-autoroll@skia.org Roll Skia from 5336e20498d9 to 47b84f354604 (2 revisions) (flutter/flutter#164188) 2025-02-26 jason-simmons@users.noreply.github.com Add a buildtools directory and move third_party/ninja to the project root in order to match the expectations of depot_tools (flutter/flutter#163890) 2025-02-26 engine-flutter-autoroll@skia.org Roll Skia from 3ce6f25dc13e to 5336e20498d9 (9 revisions) (flutter/flutter#164174) 2025-02-26 engine-flutter-autoroll@skia.org Roll Dart SDK from b8292dfeaa67 to 80865748abe0 (9 revisions) (flutter/flutter#164168) 2025-02-26 dkwingsmt@users.noreply.github.com [Engine] Remove dead code for RoundedSuperellipse (flutter/flutter#164163) 2025-02-26 jonahwilliams@google.com [Impeller] detect mediatek soc and fall back to GLES. (flutter/flutter#164126) 2025-02-26 jonahwilliams@google.com [Impeller] make DLOG into LOG for startup errors. (flutter/flutter#164110) 2025-02-26 15619084+vashworth@users.noreply.github.com Intercept error when iOS 18.4 crashes with JIT mode and give guided error (flutter/flutter#164072) 2025-02-26 98614782+auto-submit[bot]@users.noreply.github.com Reverts "[Impeller] move AHB check to Vulkan, use Vulkan surface on 29. (#164109)" (flutter/flutter#164166) 2025-02-26 zanderso@users.noreply.github.com Run new gallery transition perf benchmark on Galaxy S24 (flutter/flutter#163665) 2025-02-26 jonahwilliams@google.com [Impeller] move AHB check to Vulkan, use Vulkan surface on 29. (flutter/flutter#164109) 2025-02-26 chris@bracken.jp [iOS] Add platform view to integration_test example (flutter/flutter#164144) 2025-02-26 dominik@honnef.co Fix minor issues in documentation of WidgetsApp (flutter/flutter#163942) 2025-02-26 louisehsu@google.com Fix extra numbers showing up when enabling VoiceControl (flutter/flutter#163593) 2025-02-26 cloud@pathconnected.net Set SliverResizingHeader's maxScrollObstructionExtent to minExtent (flutter/flutter#162955) 2025-02-26 engine-flutter-autoroll@skia.org Roll Dart SDK from aea6fff33f06 to b8292dfeaa67 (1 revision) (flutter/flutter#163973) 2025-02-26 flar@google.com [DisplayList] Delete all legacy Skia-oriented method overloads in DlCanvas (flutter/flutter#164054) 2025-02-25 polinach@google.com Clean up leak tracker instrumentation tech debt. (flutter/flutter#164070) 2025-02-25 magder@google.com Revert "Marks Linux_pixel_7pro service_extensions_test to be flaky" (flutter/flutter#163882) 2025-02-25 magder@google.com Check if simctl is installed before trying to list devices or runtimes (flutter/flutter#163895) 2025-02-25 magder@google.com Update dragDevices doc to include default PointerDeviceKind.trackpad (flutter/flutter#163898) 2025-02-25 reidbaker@google.com Update multiple flutters benchmark test to latest gradle and agp and gradle defined dependencies (flutter/flutter#164029) ...
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Roll Flutter from 1659206 to 2e570ca (75 revisions) flutter/flutter@1659206...2e570ca 2025-02-27 engine-flutter-autoroll@skia.org Roll Skia from ac08df9c8d82 to e5a33102401c (1 revision) (flutter/flutter#164288) 2025-02-27 engine-flutter-autoroll@skia.org Roll Skia from 6018dff0233a to ac08df9c8d82 (1 revision) (flutter/flutter#164275) 2025-02-27 engine-flutter-autoroll@skia.org Roll Dart SDK from 4a218fbffc80 to fcda71ce147b (1 revision) (flutter/flutter#164276) 2025-02-27 engine-flutter-autoroll@skia.org Roll Skia from 0f2e106c9abc to 6018dff0233a (1 revision) (flutter/flutter#164266) 2025-02-27 robert.ancell@canonical.com Add windowing channel support to Linux embedder (flutter/flutter#163180) 2025-02-27 engine-flutter-autoroll@skia.org Roll Dart SDK from 7fa5901bd8a3 to 4a218fbffc80 (2 revisions) (flutter/flutter#164260) 2025-02-27 engine-flutter-autoroll@skia.org Roll Skia from fdd97386193e to 0f2e106c9abc (4 revisions) (flutter/flutter#164259) 2025-02-27 codefu@google.com Run more builds faster (flutter/flutter#164125) 2025-02-27 737941+loic-sharma@users.noreply.github.com Increase customer test timeout to 60 minutes (flutter/flutter#164239) 2025-02-27 jason-simmons@users.noreply.github.com Reland "Add a buildtools directory and move third_party/ninja to the project root in order to match the expectations of depot_tools" (flutter/flutter#164240) 2025-02-27 liama@google.com Use the Dart isolate ownership API on the root isolate (flutter/flutter#163703) 2025-02-26 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from g-2SJtblPjjaH7Egy... to 1elkOxihZuTEiTXzY... (flutter/flutter#164243) 2025-02-26 robert.ancell@canonical.com Show Linux driver information in flutter doctor (flutter/flutter#163980) 2025-02-26 34871572+gmackall@users.noreply.github.com Implement opacity `FlutterMutator` for hcpp (flutter/flutter#164147) 2025-02-26 engine-flutter-autoroll@skia.org Roll Fuchsia Linux SDK from g-2SJtblPjjaH7Egy... to 1elkOxihZuTEiTXzY... (flutter/flutter#164232) 2025-02-26 engine-flutter-autoroll@skia.org Roll Skia from 47b84f354604 to fdd97386193e (8 revisions) (flutter/flutter#164221) 2025-02-26 jonahwilliams@google.com [Impeller] Reland: move AHB check into Flutter main, don't disable ImageReader on 29. (flutter/flutter#164201) 2025-02-26 engine-flutter-autoroll@skia.org Roll Dart SDK from 80865748abe0 to 7fa5901bd8a3 (3 revisions) (flutter/flutter#164226) 2025-02-26 68449066+zijiehe-google-com@users.noreply.github.com Update fuchsia_test_scripts_version to the latest version (flutter/flutter#164123) 2025-02-26 brackenavaron@gmail.com Guard against zero item extent for carousel (flutter/flutter#163310) 2025-02-26 jonahwilliams@google.com [Impeller] work around for crashy Nexus 5 Driver. (flutter/flutter#164040) 2025-02-26 98614782+auto-submit[bot]@users.noreply.github.com Reverts "Add a buildtools directory and move third_party/ninja to the project root in order to match the expectations of depot_tools (#163890)" (flutter/flutter#164209) 2025-02-26 48155875+Michae1Weiss@users.noreply.github.com Add localization for `Back` and `Cancel` buttons in CupertinoNavigationBar (flutter/flutter#162581) 2025-02-26 30870216+gaaclarke@users.noreply.github.com Added compilation failure if a max ubo size is exceeded (flutter/flutter#164038) 2025-02-26 engine-flutter-autoroll@skia.org Roll Skia from 5336e20498d9 to 47b84f354604 (2 revisions) (flutter/flutter#164188) 2025-02-26 jason-simmons@users.noreply.github.com Add a buildtools directory and move third_party/ninja to the project root in order to match the expectations of depot_tools (flutter/flutter#163890) 2025-02-26 engine-flutter-autoroll@skia.org Roll Skia from 3ce6f25dc13e to 5336e20498d9 (9 revisions) (flutter/flutter#164174) 2025-02-26 engine-flutter-autoroll@skia.org Roll Dart SDK from b8292dfeaa67 to 80865748abe0 (9 revisions) (flutter/flutter#164168) 2025-02-26 dkwingsmt@users.noreply.github.com [Engine] Remove dead code for RoundedSuperellipse (flutter/flutter#164163) 2025-02-26 jonahwilliams@google.com [Impeller] detect mediatek soc and fall back to GLES. (flutter/flutter#164126) 2025-02-26 jonahwilliams@google.com [Impeller] make DLOG into LOG for startup errors. (flutter/flutter#164110) 2025-02-26 15619084+vashworth@users.noreply.github.com Intercept error when iOS 18.4 crashes with JIT mode and give guided error (flutter/flutter#164072) 2025-02-26 98614782+auto-submit[bot]@users.noreply.github.com Reverts "[Impeller] move AHB check to Vulkan, use Vulkan surface on 29. (#164109)" (flutter/flutter#164166) 2025-02-26 zanderso@users.noreply.github.com Run new gallery transition perf benchmark on Galaxy S24 (flutter/flutter#163665) 2025-02-26 jonahwilliams@google.com [Impeller] move AHB check to Vulkan, use Vulkan surface on 29. (flutter/flutter#164109) 2025-02-26 chris@bracken.jp [iOS] Add platform view to integration_test example (flutter/flutter#164144) 2025-02-26 dominik@honnef.co Fix minor issues in documentation of WidgetsApp (flutter/flutter#163942) 2025-02-26 louisehsu@google.com Fix extra numbers showing up when enabling VoiceControl (flutter/flutter#163593) 2025-02-26 cloud@pathconnected.net Set SliverResizingHeader's maxScrollObstructionExtent to minExtent (flutter/flutter#162955) 2025-02-26 engine-flutter-autoroll@skia.org Roll Dart SDK from aea6fff33f06 to b8292dfeaa67 (1 revision) (flutter/flutter#163973) 2025-02-26 flar@google.com [DisplayList] Delete all legacy Skia-oriented method overloads in DlCanvas (flutter/flutter#164054) 2025-02-25 polinach@google.com Clean up leak tracker instrumentation tech debt. (flutter/flutter#164070) 2025-02-25 magder@google.com Revert "Marks Linux_pixel_7pro service_extensions_test to be flaky" (flutter/flutter#163882) 2025-02-25 magder@google.com Check if simctl is installed before trying to list devices or runtimes (flutter/flutter#163895) 2025-02-25 magder@google.com Update dragDevices doc to include default PointerDeviceKind.trackpad (flutter/flutter#163898) 2025-02-25 reidbaker@google.com Update multiple flutters benchmark test to latest gradle and agp and gradle defined dependencies (flutter/flutter#164029) ...
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The maxScrollObstructionExtent of a Sliver denotes the "maximum extent by which this sliver can reduce the area in which content can scroll if the sliver were pinned at the edge.".
See also the rest of the documentation of this field.
In the case of SliverResizingHeader, like with SliverPersistentHeader, we expect this value to be minExtent.
A use case is provided in the referenced issue.
Fixes #162661.
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