1. 31 Oct, 2023 1 commit
    • William Hesse's avatar
      Fix divide-by-zero crash in animation_bench benchmark (#137539) · 4d0c487f
      William Hesse authored
      If the benchmark runs out of time before it closes the drawer it is animating, it tries to divide by zero when computing the time per frame.
      
      Don't report time per frame for activities with zero frames. This likely only happens for the close frame action, but guards are added to all time per frame computations in this benchmark.
      4d0c487f
  2. 17 Jul, 2023 1 commit
    • Michael Goderbauer's avatar
      Stand-alone widget tree with multiple render trees to enable multi-view rendering (#125003) · 6f09064e
      Michael Goderbauer authored
      This change enables Flutter to generate multiple Scenes to be rendered into separate FlutterViews from a single widget tree. Each Scene is described by a separate render tree, which are all associated with the single widget tree.
      
      This PR implements the framework-side mechanisms to describe the content to be rendered into multiple views. Separate engine-side changes are necessary to provide these views to the framework and to draw the framework-generated Scene into them.
      
      ## Summary of changes
      
      The details of this change are described in [flutter.dev/go/multiple-views](https://flutter.dev/go/multiple-views). Below is a high-level summary organized by layers.
      
      ### Rendering layer changes
      
      * The `RendererBinding` no longer owns a single `renderView`. In fact, it doesn't OWN any `RenderView`s at all anymore. Instead, it offers an API (`addRenderView`/`removeRenderView`) to add and remove `RenderView`s that then will be MANAGED by the binding. The `RenderView` itself is now owned by a higher-level abstraction (e.g. the `RawView` Element of the widgets layer, see below), who is also in charge of adding it to the binding. When added, the binding will interact with the `RenderView` to produce a frame (e.g. by calling `compositeFrame` on it) and to perform hit tests for incoming pointer events. Multiple `RenderView`s can be added to the binding (typically one per `FlutterView`) to produce multiple Scenes.
      * Instead of owning a single `pipelineOwner`, the `RendererBinding` now owns the root of the `PipelineOwner` tree (exposed as `rootPipelineOwner` on the binding). Each `PipelineOwner` in that tree (except for the root) typically manages its own render tree typically rooted in one of the `RenderView`s mentioned in the previous bullet. During frame production, the binding will instruct each `PipelineOwner` of that tree to flush layout, paint, semantics etc. A higher-level abstraction (e.g. the widgets layer, see below) is in charge of adding `PipelineOwner`s to this tree.
      * Backwards compatibility: The old `renderView` and `pipelineOwner` properties of the `RendererBinding` are retained, but marked as deprecated. Care has been taken to keep their original behavior for the deprecation period, i.e. if you just call `runApp`, the render tree bootstrapped by this call is rooted in the deprecated `RendererBinding.renderView` and managed by the deprecated `RendererBinding.pipelineOwner`.
      
      ### Widgets layer changes
      
      * The `WidgetsBinding` no longer attaches the widget tree to an existing render tree. Instead, it bootstraps a stand-alone widget tree that is not backed by a render tree. For this, `RenderObjectToWidgetAdapter` has been replaced by `RootWidget`.
      * Multiple render trees can be bootstrapped and attached to the widget tree with the help of the `View` widget, which internally is backed by a `RawView` widget. Configured with a `FlutterView` to render into, the `RawView` creates a new `PipelineOwner` and a new `RenderView` for the new render tree. It adds the new `RenderView` to the `RendererBinding` and its `PipelineOwner` to the pipeline owner tree.
      * The `View` widget can only appear in certain well-defined locations in the widget tree since it bootstraps a new render tree and does not insert a `RenderObject` into an ancestor. However, almost all Elements expect that their children insert `RenderObject`s, otherwise they will not function properly. To produce a good error message when the `View` widget is used in an illegal location, the `debugMustInsertRenderObjectIntoSlot` method has been added to Element, where a child can ask whether a given slot must insert a RenderObject into its ancestor or not. In practice, the `View` widget can be used as a child of the `RootWidget`, inside the `view` slot of the `ViewAnchor` (see below) and inside a `ViewCollection` (see below). In those locations, the `View` widget may be wrapped in other non-RenderObjectWidgets (e.g. InheritedWidgets).
      * The new `ViewAnchor` can be used to create a side-view inside a parent `View`. The `child` of the `ViewAnchor` widget renders into the parent `View` as usual, but the `view` slot can take on another `View` widget, which has access to all inherited widgets above the `ViewAnchor`. Metaphorically speaking, the view is anchored to the location of the `ViewAnchor` in the widget tree.
      * The new `ViewCollection` widget allows for multiple sibling views as it takes a list of `View`s as children. It can be used in all the places that accept a `View` widget.
      
      ## Google3
      
      As of July 5, 2023 this change passed a TAP global presubmit (TGP) in google3: tap/OCL:544707016:BASE:545809771:1688597935864:e43dd651
      
      ## Note to reviewers
      
      This change is big (sorry). I suggest focusing the initial review on the changes inside of `packages/flutter` first. The majority of the changes describe above are implemented in (listed in suggested review order):
      
      * `rendering/binding.dart`
      * `widgets/binding.dart`
      * `widgets/view.dart`
      * `widgets/framework.dart`
      
      All other changes included in the PR are basically the fallout of what's implemented in those files. Also note that a lot of the lines added in this PR are documentation and tests.
      
      I am also very happy to walk reviewers through the code in person or via video call, if that is helpful.
      
      I appreciate any feedback.
      
      ## Feedback to address before submitting ("TODO")
      6f09064e
  3. 14 Mar, 2023 1 commit
  4. 10 Mar, 2023 4 commits
  5. 27 Jul, 2022 1 commit
  6. 11 May, 2022 1 commit
  7. 06 Apr, 2022 1 commit
  8. 03 Feb, 2022 1 commit
  9. 15 Jul, 2021 1 commit
  10. 14 Jul, 2021 3 commits
  11. 13 Jul, 2021 2 commits
  12. 02 Jun, 2021 1 commit
  13. 21 Apr, 2021 1 commit
  14. 27 Jan, 2021 1 commit
  15. 16 Oct, 2020 1 commit
  16. 05 Dec, 2019 1 commit
  17. 27 Nov, 2019 1 commit
    • Ian Hickson's avatar
      License update (#45373) · 449f4a66
      Ian Hickson authored
      * Update project.pbxproj files to say Flutter rather than Chromium
      
      Also, the templates now have an empty organization so that we don't cause people to give their apps a Flutter copyright.
      
      * Update the copyright notice checker to require a standard notice on all files
      
      * Update copyrights on Dart files. (This was a mechanical commit.)
      
      * Fix weird license headers on Dart files that deviate from our conventions; relicense Shrine.
      
      Some were already marked "The Flutter Authors", not clear why. Their
      dates have been normalized. Some were missing the blank line after the
      license. Some were randomly different in trivial ways for no apparent
      reason (e.g. missing the trailing period).
      
      * Clean up the copyrights in non-Dart files. (Manual edits.)
      
      Also, make sure templates don't have copyrights.
      
      * Fix some more ORGANIZATIONNAMEs
      449f4a66
  18. 03 May, 2019 1 commit
    • Greg Spencer's avatar
      Re-land: Add support for Tooltip hover (#31699) · 11e0a725
      Greg Spencer authored
      This is a re-land of #31561, after fixing performance regressions.
      
      Added change listening to the MouseTracker so that the Listener and tooltip can react to whether or not a mouse is connected at all. Added a change check to make sure Listener only repaints when something changed.
      
      Fixes #22817
      11e0a725
  19. 05 Feb, 2019 1 commit
  20. 22 Jan, 2019 1 commit
  21. 04 Oct, 2018 1 commit
  22. 12 Sep, 2018 1 commit
  23. 02 Aug, 2018 1 commit
  24. 27 Jul, 2018 1 commit
  25. 23 Jul, 2018 1 commit
  26. 16 Jul, 2018 2 commits
  27. 06 Jun, 2018 2 commits
  28. 17 Nov, 2017 1 commit
  29. 23 Jun, 2017 1 commit
    • Ian Hickson's avatar
      Deep linking: automatically push the route hiearchy on load. (#10894) · 9adb4a78
      Ian Hickson authored
      The main purpose of this PR is to make it so that when you set the
      initial route and it's a hierarchical route (e.g. `/a/b/c`), it
      implies multiple pushes, one for each step of the route (so in that
      case, `/`, `/a`, `/a/b`, and `/a/b/c`, in that order). If any of those
      routes don't exist, it falls back to '/'.
      
      As part of doing that, I:
      
       * Changed the default for MaterialApp.initialRoute to honor the
         actual initial route.
      
       * Added a MaterialApp.onUnknownRoute for handling bad routes.
      
       * Added a feature to flutter_driver that allows the host test script
         and the device test app to communicate.
      
       * Added a test to make sure `flutter drive --route` works.
         (Hopefully that will also prove `flutter run --route` works, though
         this isn't testing the `flutter` tool's side of that. My main
         concern is over whether the engine side works.)
      
       * Fixed `flutter drive` to output the right target file name.
      
       * Changed how the stocks app represents its data, so that we can
         show a page for a stock before we know if it exists.
      
       * Made it possible to show a stock page that doesn't exist. It shows
         a progress indicator if we're loading the data, or else shows a
         message saying it doesn't exist.
      
       * Changed the pathing structure of routes in stocks to work more
         sanely.
      
       * Made search in the stocks app actually work (before it only worked
         if we happened to accidentally trigger a rebuild). Added a test.
      
       * Replaced some custom code in the stocks app with a BackButton.
      
       * Added a "color" feature to BackButton to support the stocks use case.
      
       * Spaced out the ErrorWidget text a bit more.
      
       * Added `RouteSettings.copyWith`, which I ended up not using.
      
       * Improved the error messages around routing.
      
      While I was in some files I made a few formatting fixes, fixed some
      code health issues, and also removed `flaky: true` from some devicelab
      tests that have been stable for a while. Also added some documentation
      here and there.
      9adb4a78
  30. 04 May, 2017 1 commit
  31. 02 May, 2017 1 commit
    • Ian Hickson's avatar
      Flush microtasks after transient callbacks are run. (#9702) · e8c46927
      Ian Hickson authored
      This splits the frame pipeline into two, beginFrame and drawFrame.
      
      As part of making this change I added some debugging hooks that helped
      debug the issues that came up:
      
       * I added debugPrintScheduleFrameStacks which prints a stack whenever
         a frame is actually scheduled, so you can see why frames are being
         scheduled.
      
       * I added some toString output to EditableText and RawKeyboardListener.
      
       * I added a scheduler_tester.dart library for scheduler library tests.
      
       * I changed the test framework to flush microtasks before pumping.
      
       * Some asserts that had the old string literal form were replaced by
         asserts with messages.
      
      I also fixed a few subtle bugs that this uncovered:
      
       * setState() now calls `ensureVisualUpdate`, rather than
         `scheduleFrame`. This means that calling it from an
         AnimationController callback does not actually schedule an extra
         redundant frame as it used to.
      
       * I corrected some documentation.
      e8c46927
  32. 12 Apr, 2017 1 commit
    • Ian Hickson's avatar
      Move Point to Offset (#9277) · bf017b79
      Ian Hickson authored
      * Manually fix every use of Point.x and Point.y
      
      Some of these were moved to dx/dy, but not all.
      
      * Manually convert uses of the old gradient API
      
      * Remove old reference to Point.
      
      * Mechanical changes
      
      I applied the following at the root of the Flutter repository:
      
      git ls-files -z | xargs -0 sed -i 's/\bPoint[.]origin\b/Offset.zero/g'
      git ls-files -z | xargs -0 sed -i 's/\bPoint[.]lerp\b/Offset.lerp/g'
      git ls-files -z | xargs -0 sed -i 's/\bnew Point\b/new Offset/g'
      git ls-files -z | xargs -0 sed -i 's/\bconst Point\b/const Offset/g'
      git ls-files -z | xargs -0 sed -i 's/\bstatic Point /static Offset /g'
      git ls-files -z | xargs -0 sed -i 's/\bfinal Point /final Offset /g'
      git ls-files -z | xargs -0 sed -i 's/^\( *\)Point /\1Offset /g'
      git ls-files -z | xargs -0 sed -i 's/ui[.]Point\b/ui.Offset/g'
      git ls-files -z | xargs -0 sed -i 's/(Point\b/(Offset/g'
      git ls-files -z | xargs -0 sed -i 's/\([[{,]\) Point\b/\1 Offset/g'
      git ls-files -z | xargs -0 sed -i 's/@required Point\b/@required Offset/g'
      git ls-files -z | xargs -0 sed -i 's/<Point>/<Offset>/g'
      git ls-files -z | xargs -0 sed -i 's/[.]toOffset()//g'
      git ls-files -z | xargs -0 sed -i 's/[.]toPoint()//g'
      git ls-files -z | xargs -0 sed -i 's/\bshow Point, /show /g'
      git ls-files -z | xargs -0 sed -i 's/\bshow Point;/show Offset;/g'
      
      * Mechanical changes - dartdocs
      
      I applied the following at the root of the Flutter repository:
      
      git ls-files -z | xargs -0 sed -i 's/\ba \[Point\]/an [Offset]/g'
      git ls-files -z | xargs -0 sed -i 's/\[Point\]/[Offset]/g'
      
      * Further improvements and a test
      
      * Fix minor errors from rebasing...
      
      * Roll engine
      bf017b79