TextAlign applies to a whole paragraph instead of applying to an individual
text span. This patch moves the property out of TextStyle and into a separate
property on Text and RichText.
Previously, border with '0' was ambiguous. Sometimes we treated it as
hairline borders, sometimes as "don't show the border", though even in
the latter case we did some graphics work sometimes. Now we have an
explicit BorderStyle.none flag to not draw the border efficiently.
* left -> leading (Removes an LTR bias)
* center -> title (Widget was actually centered)
* right -> actions (Removes an LTR bias, asymmetric with leading)
Fixes#2348
Specifically:
* Handle null styles in TextSpan without crashing in toString().
* Handle null children in TextSpan child lists without crashing in
toString().
* Handle entirely empty TextSpans in toString() explicitly.
* Assert that TextSpans don't contain nulls in various places. This is
done more often than one might think necessary, because it turns out
that TextSpan takes a (mutable) List for one of its arguments, so
who knows what it will contain at any given time. By asserting all
over the place, hopefully we'll catch it near the change if they do
change it.
* Add a RichText example to Stocks to exercise RichText and TextSpans.
See also: https://github.com/flutter/flutter/issues/2514, https://github.com/flutter/flutter/issues/2519
Each layer is supposed to reexport the parts of the previous layer
that are part of its API.
- In painting.dart, export from dart:ui all the Canvas-related APIs
that make sense to be used at higher levels, e.g. PaintingStyle.
- Delete painting/shadows.dart. It was dead code.
- In rendering/object.dart, export all of painting.dart.
- In widgets/basic.dart, export all of painting.dart and
animation.dart. Some classes in animation/ are renamed to make this
less disruptive and confusing to the namespace.
- Split out Stocks back into an import model rather than a part model,
so that it's easier to manage its dependencies on a per-file basis.
- Move Ticker to scheduler library.
- Remove as many redundant imports as possible now.
- Some minor nit picking cleanup in various files.
Also:
- minor code reindents in places.
- reset the widget tree between tests.
- once you generate a route, don't let its builder change
(previously it would keep changing as the routes table changed).
- revert the stocks app toolbar-fading-on-forward-transition thing.
- `Scaffold.of(context).showBottomSheet(widget);`
- Returns an object with .closed Future and .close() method.
- Uses a StateRoute to handle back button.
- Take the Navigator logic out of the BottomSheet widget.
- Support showing a sheet while an old one is going away.
- Add Navigator.remove().
Factored OverlayRoute out of the modal and persistent bottom sheet clases, since the bottom sheet classes need to drive the performance.
Added a bottom sheet to the stocks demo: long-press on a stock shows a modal bottom sheet.
Made AnimatedModalBarrier public.
Add type annotations in many places.
Fix some identifiers to have more lint-satisfying names.
Make all operator==s consistent in style.
Reorder some functions for consistency.
Make ParentData no longer dynamic, and fix all the code around that.
Make it possible for named routes to be generated on the fly.
To demonstrate this, you can now long-press a stock to open it.
Next steps:
- transitions between (named) states that follow full material logic,
e.g. in the case of the stock row to stock page transition, expanding
the row into a raised sheet of material and expanding it to fit the
screen, leaving the toolbar in place but cross-fading the old
contents to the new contents.
- more information in the stock view.
While I was here I also made Material have an opinion about default text
style, so if you forget to set one, it just uses body1.
Also, fixed bugs introduced recently that made RouteState and MenuRoute
not work properly.
