text_autosize 0.3.0

Automatically resize text to fit its bounds: shrink the font until the text fits the available width, height and maxLines. TextScaler-aware, API-compatible with auto_size_text.

0.3.0

• Fix a hang reachable from a legal style. TextStyle(fontSize: 0) — which a plain Text renders without complaint — made every fit probe scale the span by candidate / 0. The resulting infinite ratio laid out text at NaN sizes, and because each fit check compares against NaN (where every comparison is false) the probe reported that it fitted. Worse than the wrong answer, that NaN layout left the text engine in a state where a later, ordinary AutoSizeText could stop returning from layout entirely. A zero, negative or infinite base now skips the ratio machinery and renders at the size the caller asked for, which is what Text does. Covered by tests, including one that pumps an ordinary widget afterwards to prove nothing is wedged.
• Mark AutoSizeGroup as final. Its entire contract is private, so an external implements AutoSizeGroup compiled but was guaranteed to fail with NoSuchMethodError the moment a widget used it. AutoSizeText is deliberately left open: it is a drop-in for auto_size_text, whose AutoSizeText is open, as is Flutter's own Text, and subclassing a text widget to preset its style is a real pattern this should not break.
• Remove a stray # Changelog heading from the middle of this file.

0.2.0

• Add back a deprecated textScaleFactor parameter on AutoSizeText and AutoSizeText.rich. The 0.1.0 release dropped it, which broke the drop-in claim: any call site that set textScaleFactor failed to compile. It now compiles again and maps to TextScaler.linear(factor). Prefer textScaler; textScaleFactor is deprecated and will be removed later. Setting both asserts in debug builds.

0.1.3

• Install instructions now say pub add instead of pinning a version. The pinned number was stale by several releases and would have been stale again after the next one: the README ships frozen in the archive, so a hand-edited version line is wrong the moment anything is published. This one cannot go out of date.

0.1.2

• Docs: tightened the README wording and visuals.

0.1.1

• Expand the package description to name what the package does in the words people search for. No code changes.

0.1.0

Initial release. The API follows auto_size_text 3.0.0, with these changes:

• textScaler replaces textScaleFactor. The fitted font size accounts for the ambient MediaQuery scaler, including nonlinear scalers.
• Rich text is measured with the fully resolved style, matching how Text.rich renders it.
• Measurement resolves textAlign and textDirection like the rendered Text instead of assuming left-aligned, left-to-right text.
• A single TextPainter is reused for all fit measurements of a widget.
• textWidthBasis, textHeightBehavior and selectionColor are passed through to the built Text.
• presetFontSizes are asserted to be in descending order.