feat: ✨Provided alignment parameter to adjust the auto scroll alignme…

…nt property (#478). (#482)

Co-authored-by: Vatsal Tanna <[email protected]>

CHANGELOG.md

@@ -3,6 +3,8 @@
 - Feature ✨: Added Action widget for tooltip
 - Feature [#475](https://github.com/SimformSolutionsPvtLtd/flutter_showcaseview/issues/475) - Add
   feasibility to change margin of tooltip with `toolTipMargin`.
+- Feature [#478](https://github.com/SimformSolutionsPvtLtd/flutter_showcaseview/issues/478) - Added
+  feasibility to change auto scroll widget alignment `scrollAlignment`.
 
 ## [3.0.0]
 - [BREAKING] Fixed [#434](https://github.com/SimformSolutionsPvtLtd/flutter_showcaseview/issues/434) removed deprecated text style after Flutter 3.22 follow [migration guide](https://docs.flutter.dev/release/breaking-changes/3-19-deprecations#texttheme)

README.md

@@ -155,6 +155,7 @@ WidgetsBinding.instance.addPostFrameCallback((_) =>
 | toolTipMargin             | double                     | 14                           | For tooltip margin                                                             |
 | globalTooltipActionConfig | TooltipActionConfig?       |                              | Global tooltip actionbar config                                                |
 | globalTooltipActions      | List<TooltipActionButton>? |                              | Global list of tooltip actions                                                 |
+| scrollAlignment           | double                     | 0.5                          | For Auto scroll widget alignment                                               |
 
 ## Properties of `Showcase` and `Showcase.withWidget`:
 

lib/src/showcase.dart

@@ -284,6 +284,11 @@ class Showcase extends StatefulWidget {
   /// Default to [const TooltipActionConfig()]
   final TooltipActionConfig? tooltipActionConfig;
 
+  /// Defines the alignment for the auto scroll function.
+  ///
+  /// Defaults to 0.5.
+  final double scrollAlignment;
+
   /// Highlights a specific widget on the screen with an informative tooltip.
   ///
   /// This widget helps you showcase specific parts of your UI by drawing an
@@ -344,6 +349,7 @@ class Showcase extends StatefulWidget {
   ///   - `toolTipMargin`: The margin around the tooltip (defaults to 14dp).
   ///   - `tooltipActions`: A list of custom actions (widgets) to display within the tooltip.
   ///   - `tooltipActionConfig`: Configuration options for custom tooltip actions.
+  ///   - `scrollAlignment`: Defines the alignment for the auto scroll function.
   ///
   /// **Assertions:**
   ///
@@ -400,6 +406,7 @@ class Showcase extends StatefulWidget {
     this.toolTipMargin = 14,
     this.tooltipActions,
     this.tooltipActionConfig,
+    this.scrollAlignment = 0.5,
   })  : height = null,
         width = null,
         container = null,
@@ -494,6 +501,7 @@ class Showcase extends StatefulWidget {
     this.toolTipSlideEndDistance = 7,
     this.tooltipActions,
     this.tooltipActionConfig,
+    this.scrollAlignment = 0.5,
   })  : showArrow = false,
         onToolTipClick = null,
         scaleAnimationDuration = const Duration(milliseconds: 300),
@@ -590,7 +598,7 @@ class _ShowcaseState extends State<Showcase> {
       await Scrollable.ensureVisible(
         widget.key.currentContext!,
         duration: showCaseWidgetState.widget.scrollDuration,
-        alignment: 0.5,
+        alignment: widget.scrollAlignment,
       );
       setState(() => _isScrollRunning = false);
     });