chore!: 🔥 Remove height and width requirement in Showcase.withWidget

Author: aditya-css

CHANGELOG.md

@@ -40,7 +40,11 @@
 - Deprecate [#531](https://github.com/SimformSolutionsPvtLtd/flutter_showcaseview/pull/531) - 
   Update deprecated `ShowCaseWidget` removal version. 
 - Improvement [#505](https://github.com/SimformSolutionsPvtLtd/flutter_showcaseview/pull/505) -
-  Fixed example app to run in flutter version `v3.32.5` .
+  Fixed example app to run in flutter version `v3.32.5`.
+- Breaking [#541](https://github.com/SimformSolutionsPvtLtd/flutter_showcaseview/pull/541) - 
+  Removed height and width from `Showcase.withWidget` constructor, as it is not required anymore.
+- Improvement [#555](https://github.com/SimformSolutionsPvtLtd/flutter_showcaseview/issues/555) 
+  Expose `onFinish` callback via ShowCaseView.get.
 
 ## [4.0.1]
 - Fixed [#493](https://github.com/SimformSolutionsPvtLtd/flutter_showcaseview/issues/493) - ShowCase.withWidget not showing issue 

example/lib/main.dart

@@ -599,8 +599,6 @@ class MailTile extends StatelessWidget {
                 if (showCaseDetail)
                   Showcase.withWidget(
                     key: showCaseKey!,
-                    height: 50,
-                    width: 150,
                     tooltipActionConfig: const TooltipActionConfig(
                       alignment: MainAxisAlignment.spaceBetween,
                       crossAxisAlignment: CrossAxisAlignment.center,

lib/src/showcase/showcase.dart

@@ -112,9 +112,7 @@ class Showcase extends StatefulWidget {
     this.enableAutoScroll,
     this.floatingActionWidget,
     this.targetTooltipGap = 10,
-  })  : height = null,
-        width = null,
-        container = null,
+  })  : container = null,
         showcaseKey = key,
         assert(
           targetTooltipGap >= 0,
@@ -152,8 +150,6 @@ class Showcase extends StatefulWidget {
   /// ```dart
   /// Showcase.withWidget(
   ///   key: _customKey,
-  ///   height: 80,
-  ///   width: 140,
   ///   container: Column(
   ///     children: [
   ///       Text(
@@ -172,8 +168,6 @@ class Showcase extends StatefulWidget {
   /// ```
   const Showcase.withWidget({
     required GlobalKey key,
-    required this.height,
-    required this.width,
     required this.container,
     required this.child,
     this.floatingActionWidget,
@@ -336,12 +330,6 @@ class Showcase extends StatefulWidget {
   /// Default to `true`
   final bool showArrow;
 
-  /// Height of [container]
-  final double? height;
-
-  /// Width of [container]
-  final double? width;
-
   /// The duration of time the bouncing animation of tooltip should last.
   ///
   /// Default to [Duration(milliseconds: 2000)]