showcase_tutorial 1.2.0

A Flutter package to Showcase/Highlight widgets step by step.

Changelog

1.2.0

• FEAT: add ShowCaseWidget(style: ShowcaseStyle(...)) to set default tooltip styling (tooltipBackgroundColor, textColor, titleTextStyle, descTextStyle, tooltipBorderRadius) once for every Showcase in the tree. An individual Showcase still overrides any value it sets.
• FEAT: Showcase.description is now optional. A showcase can show just a title (or a custom container) without passing description: null.
• BREAKING (minor): Showcase.tooltipBackgroundColor and Showcase.textColor are now nullable (Color?) so they can fall back to ShowcaseStyle. Code that passes these as named arguments is unaffected; only code that read the fields expecting a non-null Color needs a null check.
• FIX: the overlay barrier was being painted twice, so the default (non-blurred) overlay rendered at roughly double the configured opacity. It is now drawn once at the requested overlayColor/overlayOpacity.
• FIX: ActionsSettings.containerColor is now honoured for tooltip action buttons. Previously the action container used a hardcoded background (Colors.white / Colors.lightBlueAccent) and ignored the setting.
• FIX: guard GetPosition.getRect() against a null/unsized render object so it returns Rect.zero instead of throwing during teardown.
• FIX: multi-widget showcases (Showcase(keys: ...)) now skip an individual missing/unmounted widget instead of dropping every highlight for the step.
• PERF: MeasureSize now reads its size during layout via a RenderProxyBox instead of scheduling a post-frame measurement on every build, and the overlay no longer schedules a rebuild callback while no showcase is active.
• DOCS: document the multi-widget keys parameter.
• CHORE: correct the flutter SDK constraint (>=3.27.0, required by Color.withValues) and add topics and screenshots to the pubspec.

1.1.2

• FIX: guard _scrollIntoView against a use-after-dispose crash. A Showcase disposed within a frame of its first build (for example, a redirect right after the first build) no longer throws "Null check operator used on a null value" from its post-frame callback.
• CHORE: upgrade flutter_lints to ^6.0.0 and resolve the newly surfaced lints.

1.1.1

• Example app: add an isImportant field to the mail model and refine the MailTile and detail screen styling.
• Docs: fix the GitHub stars link in the README.

1.1.0

• FEAT: update dependency constraints to Dart SDK 3.9.0.
• Refactor the code structure for improved readability and maintainability.
• Fix minor bugs and improve performance.
• Update the documentation for new features.

1.0.4

• Update Flutter to 3.16.0.

1.0.0

• Initial release (14 Sep 2023).