This optimizes the AnimatedSwitcher so that it tags the right widget with its keyed subtree, and avoids rebuilding the transition unnecessarily.
This significantly improves the performance of Chips (which uses AnimatedSwitcher to swap out it's avatar and delete icon children).
This is a follow up on issue #17169 and the pull request #17298
This pull request adds the onChangeStart and onChangeEnd callbacks for CupertinoSlider. These are called when a user starts and ends a change respectively.
Pushing for @dcaraujo0872, the PR author.
This allows test environments other than `flutter test` to have a hook
into the test exception reporting. Some test environments, for example,
don't just dump error details to the console, but rather require them
to be reported to a separate server.
This contains the following commits:
flutter/engine@1179c38 Clear the raster cache result when bypassing raster cache.
flutter/engine@ea9f96b Roll src/third_party/skia/ dd6e62e28..44890ef00 (1 commit)
flutter/engine@5c4201f Roll src/third_party/skia/ 51371a433..dd6e62e28 (4 commits; 1 trivial rolls)
flutter/engine@a56f2f2 Roll src/third_party/skia/ 000e00df1..51371a433 (11 commits; 1 trivial rolls)
Our style guide says the k's are not necessary, and it seems like a good idea to make all the code be consistent on this.
Only naming changes to private vars: no logic changes.
* Roll engine to 40a37126078f3eee2cd7584da04704908f47cd68
Changes since last roll:
```
40a371260 Remove the content handler for its move to topaz. (#5289)
a262da46f Roll src/third_party/skia/ c06754b04..000e00df1 (12 commits; 1 trivial rolls) (#5288)
f7eab94f4 Roll src/third_party/skia/ bd74e6a02..c06754b04 (1 commit) (#5287)
597fa9ed4 Delegate AppDelegate life-cycle callbacks to plugins via separate object (#5173)
ef0915c10 update docs for Path.getBounds (#5261)
bb1736b7b Roll src/third_party/skia/ 15f1761d9..bd74e6a02 (1 commit; 1 trivial rolls) (#5286)
8c9558b1f Roll src/third_party/skia/ ed4921b9d..15f1761d9 (1 commit) (#5285)
5cbfa9593 Roll src/third_party/skia/ 05da1c16d..ed4921b9d (1 commit) (#5284)
919e8c211 Support for TwoPointConical gradients (#5275)
cdd7e0887 Roll src/third_party/skia/ 94f585ed0..05da1c16d (9 commits; 1 trivial rolls) (#5283)
```
* Include more changes(reverts and a fix)
I'm moving the assets in the assets-for-api-docs repo to a slightly different location to help with organization in that repo, so this PR points the doc URLs to the new location. The old assets won't be removed until this PR makes its way to the API docs website.
No documentation or code changes here, other than changing doc image URLs.
This adds a simple spacer widget first suggested by Scott Stoll (@ScottS2017) in the abandoned PR #15802
This PR replaces that one, cleans it up, and adds a test.
On smaller-screen devices such as the iPhone 4s, more scrolling is
required between the Material dialog demo and the Material pickers demo
than will happen within the default timeout.
In FlutterDriver.scrollUntilVisible, pause momentarily after we kick off
the waitFor() call, in order to give that call a chance to complete
before we start scrolling if the element is on-screen.
