This fixes#17169 by adding onChangeStart and onChangeEnd to the slider. These will be called when the user starts a change, and when they end a change, regardless of whether that change is a tap or a drag.
These differ from onChanged, in that they only report when the user starts and ends an interaction, not at every slight change.
Before this change, if you specified a non-null textTheme, but the theme you specified didn't have a body2 defined, then creating a ChipTheme would assert (which means creating a ThemeData would fail).
This adds handling for this corner case to default to reasonable values in that case. The slider had the same problem, but for accentTextTheme, so I fixed that too.
While I had the patient open, Hans and I noticed that TextTheme.merge wasn't doing the right thing in the case where some members were null either, so I fixed that, and added some examples, since merge/copyWith are common operations that are not always well understood.
Fixes#17251
* Allow customization of TextSpan in EditableText
* Addressed PR comments
* Added test with custom-styled EditableText subclass
* More code style fixes
In order to avoid checking binaries into flutter/flutter,
this comparator can be used to retrieve golden files from
a sibling flutter/goldens repository.
https://github.com/flutter/flutter/issues/16859
The zero-width space character may not be supported by the font requested in
the text style. If that happens, then libtxt will fall back to another font
to render that character, resulting in text metrics that do not match the
intended font.
Fixes https://github.com/flutter/flutter/issues/16257
New a11y traversal:
- sort direct sibling SemanticsNodes only
- use new sorting algorithm
- implement RTL
- test semantics in traversal order by default
- add AppBar traversal test
- breaking: remove nextNodeId/previousNodeId from the framework
- breaking: remove DebugSemanticsDumpOrder.geometricOrder
When passing a Color object with same R/G/B code ( e.g. [new Color.fromRGBO(100, 100, 100, 1.0)] ) to HSVColor.fromColor(Color color) , the hue in return will be NaN .
This adds a toImage function to RenderRepaintBoundary that returns an uncompressed raw image of the RenderRepaintBoundary and its children. A device pixel ratio different from the physical ratio may be specified for the captured image. A value of 1.0 will give an image in logical pixels.
This addresses #16593 by removing the unneeded assert in the setter for constrainedAxis. Null was meant to be allowed there.
This replaces #16599 and fixes#16593, reported by @maksimr
