Merge pull request #141 from deepikahr/shimmer

issues fixed

Author: deepikahr

example/lib/main_temp.dart

@@ -106,6 +106,7 @@ class GFCard extends StatelessWidget {
   /// defines the gradient background
   final LinearGradient gradient;
 
+
   static const double _defaultElevation = 1;
   static const Clip _defaultClipBehavior = Clip.none;
 
@@ -121,7 +122,7 @@ class GFCard extends StatelessWidget {
                             ? title ?? Container()
                             : image != null
                                 ? ClipRRect(
-                                    borderRadius:
+                                    borderRadius: borderRadius ??
                                         const BorderRadius.vertical(top: Radius.circular(4)),
                                     child: image,
                                   )
@@ -155,7 +156,7 @@ class GFCard extends StatelessWidget {
       decoration: gradient != null
           ? BoxDecoration(
               gradient: gradient,
-              borderRadius: const BorderRadius.all(Radius.circular(4)),
+              borderRadius: borderRadius ?? const BorderRadius.all(Radius.circular(4)),
             )
           : null,
       child: gradient == null

lib/components/card/gf_card.dart

@@ -23,6 +23,7 @@ class GFCarousel extends StatefulWidget {
     this.pauseAutoPlayOnTouch,
     this.enlargeMainPage = false,
     this.onPageChanged,
+    this.onPageIndex,
     this.scrollPhysics,
     this.scrollDirection = Axis.horizontal,
   })  : realPage = enableInfiniteScroll ? realPage + initialPage : initialPage,
@@ -94,6 +95,8 @@ class GFCarousel extends StatefulWidget {
   /// Called whenever the page in the center of the viewport changes.
   final Function(int index) onPageChanged;
 
+  int onPageIndex;
+
   /// How the carousel should respond to user input.
   ///
   /// For example, determines how the items continues to animate after the
@@ -216,6 +219,12 @@ class _GFCarouselState extends State<GFCarousel> with TickerProviderStateMixin {
     timer?.cancel();
   }
 
+  onPageChanged(index) {
+    setState(() {
+      index;
+    });
+  }
+
   @override
   Widget build(BuildContext context) => Stack(
         children: <Widget>[
@@ -229,8 +238,8 @@ class _GFCarouselState extends State<GFCarousel> with TickerProviderStateMixin {
               int currentPage;
               currentPage = _getRealIndex(index + widget.initialPage,
                   widget.realPage, widget.items.length);
-              if (widget.onPageChanged != null) {
-                widget.onPageChanged(currentPage);
+              if (widget.pagination == true) {
+                onPageChanged(currentPage);
                 _current = currentPage;
               }
               _current = currentPage;

lib/components/carousel/gf_carousel.dart

@@ -163,7 +163,6 @@ class _GFCheckboxListTileState extends State<GFCheckboxListTile> {
            padding: widget.padding,
            margin: widget.margin,
            title: widget.title,
-
            icon:  GFCheckbox(
              size: widget.size,
              activebgColor: widget.activebgColor,

lib/components/checkboxListTile/gf_checkbox_list_tile.dart

@@ -50,7 +50,7 @@ class GFListTile extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) => Container(
-        constraints: const BoxConstraints(minHeight: 50),
+//        constraints: const BoxConstraints(minHeight: 50),
         padding: padding,
         margin: margin,
         decoration: BoxDecoration(

lib/components/list_tile/gf_list_tile.dart

@@ -11,7 +11,7 @@ class GFSegmentTabs extends StatefulWidget {
   /// [GFSegmentTabs] are best used as an alternative for [GFTabBar].
   const GFSegmentTabs(
       {Key key,
-      this.initialIndex = 0,
+//      this.initialIndex = 0,
       @required this.length,
       this.height,
       this.width,
@@ -31,13 +31,13 @@ class GFSegmentTabs extends StatefulWidget {
       this.tabs,
       this.tabController})
       : assert(length != null && length >= 0),
-        assert(initialIndex != null &&
-            initialIndex >= 0 &&
-            (length == 0 || initialIndex < length)),
+//        assert(initialIndex != null &&
+//            initialIndex >= 0 &&
+//            (length == 0 || initialIndex < length)),
         super(key: key);
 
-  /// The initial index of the selected tab. Defaults to zero.
-  final int initialIndex;
+//  /// The initial index of the selected tab. Defaults to zero.
+//  final int initialIndex;
 
   /// The total number of tabs. Typically greater than one. Must match [TabBar.tabs]'s and
   /// [TabBarView.children]'s length.
@@ -178,7 +178,7 @@ class _GFSegmentTabsState extends State<GFSegmentTabs> {
           borderRadius: widget.borderRadius ?? BorderRadius.circular(2),
         ),
         child: DefaultTabController(
-          initialIndex: widget.initialIndex,
+//          initialIndex: widget.initialIndex,
           length: widget.length,
           child: Material(
             borderRadius: widget.borderRadius ?? BorderRadius.circular(2),

lib/components/tabs/gf_segment_tabs.dart

@@ -1,3 +1,4 @@
+import 'package:flutter/gestures.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/widgets.dart';
@@ -16,8 +17,9 @@ class GFTabBar extends StatefulWidget {
   /// [TabController.length].
   const GFTabBar({
     Key key,
-    this.initialIndex = 0,
+//    this.initialIndex = 0,
     @required this.length,
+    this.isScrollable = false,
     this.tabBarHeight,
     this.tabBarColor,
     this.indicatorColor,
@@ -34,13 +36,14 @@ class GFTabBar extends StatefulWidget {
     this.controller,
     this.shape,
   })  : assert(length != null && length >= 0),
-        assert(initialIndex != null &&
-            initialIndex >= 0 &&
-            (length == 0 || initialIndex < length)),
+        assert(isScrollable != null),
+//        assert(initialIndex != null &&
+//            initialIndex >= 0 &&
+//            (length == 0 || initialIndex < length)),
         super(key: key);
 
-  /// The initial index of the selected tab. Defaults to zero.
-  final int initialIndex;
+//  /// The initial index of the selected tab. Defaults to zero.
+//  final int initialIndex;
 
   /// The total number of tabs. Typically greater than one. Must match [TabBar.tabs]'s and
   /// [TabBarView.children]'s length.
@@ -151,6 +154,13 @@ class GFTabBar extends StatefulWidget {
   /// and the length of the [TabBarView.children] list.
   final List<Widget> tabs;
 
+  /// Whether this tab bar can be scrolled horizontally.
+  ///
+  /// If [isScrollable] is true, then each tab is as wide as needed for its label
+  /// and the entire [TabBar] is scrollable. Otherwise each tab gets an equal
+  /// share of the available space.
+  final bool isScrollable;
+
   /// This widget's selection and animation state.
   ///
   /// If [TabController] is not provided, then the value of [DefaultTabController.of]
@@ -165,26 +175,36 @@ class GFTabBar extends StatefulWidget {
 }
 
 class _GFTabBarState extends State<GFTabBar> {
+  ScrollController _scrollController;
+  DragStartBehavior dragStartBehavior = DragStartBehavior.start;
+
   @override
-  Widget build(BuildContext context) => Container(
-        height: widget.tabBarHeight ?? MediaQuery.of(context).size.height * 0.1,
-        child: Material(
-          shape: widget.shape,
-          type: MaterialType.button,
-          color: widget.tabBarColor ?? GFColors.PRIMARY,
-          child: TabBar(
-            controller: widget.controller,
-            labelColor: widget.labelColor,
-            unselectedLabelColor: widget.unselectedLabelColor,
-            labelStyle: widget.labelStyle,
-            unselectedLabelStyle: widget.unselectedLabelStyle,
-            indicatorColor: widget.indicatorColor,
-            indicatorSize: widget.indicatorSize,
-            indicator: widget.indicator,
-            indicatorPadding: widget.indicatorPadding,
-            indicatorWeight: widget.indicatorWeight,
-            tabs: widget.tabs,
+  Widget build(BuildContext context) => SingleChildScrollView(
+    dragStartBehavior: dragStartBehavior,
+    scrollDirection: Axis.horizontal,
+    controller: _scrollController,
+    child: Container(
+      width: MediaQuery.of(context).size.width,
+          height: widget.tabBarHeight ?? MediaQuery.of(context).size.height * 0.1,
+          child: Material(
+            shape: widget.shape,
+            type: MaterialType.button,
+            color: widget.tabBarColor ?? GFColors.PRIMARY,
+            child: TabBar(
+              isScrollable: widget.isScrollable,
+              controller: widget.controller,
+              labelColor: widget.labelColor,
+              unselectedLabelColor: widget.unselectedLabelColor,
+              labelStyle: widget.labelStyle,
+              unselectedLabelStyle: widget.unselectedLabelStyle,
+              indicatorColor: widget.indicatorColor,
+              indicatorSize: widget.indicatorSize,
+              indicator: widget.indicator,
+              indicatorPadding: widget.indicatorPadding,
+              indicatorWeight: widget.indicatorWeight,
+              tabs: widget.tabs,
+            ),
           ),
         ),
-      );
+  );
 }

lib/components/tabs/gf_tabbar.dart

@@ -15,6 +15,7 @@ class GFTabs extends StatefulWidget {
     Key key,
     this.initialIndex = 0,
     @required this.length,
+    this.isScrollable = false,
     this.height,
     this.tabBarColor,
     this.indicatorColor,
@@ -167,6 +168,13 @@ class GFTabs extends StatefulWidget {
   /// defines the shape of tabBar
   final ShapeBorder shape;
 
+  /// Whether this tab bar can be scrolled horizontally.
+  ///
+  /// If [isScrollable] is true, then each tab is as wide as needed for its label
+  /// and the entire [TabBar] is scrollable. Otherwise each tab gets an equal
+  /// share of the available space.
+  final bool isScrollable;
+
   @override
   _GFTabsState createState() => _GFTabsState();
 }
@@ -182,9 +190,10 @@ class _GFTabsState extends State<GFTabs> {
             child: Column(
               children: <Widget>[
                 GFTabBar(
+                  isScrollable: widget.isScrollable,
                   shape: widget.shape,
                   length: widget.length,
-                  initialIndex: widget.initialIndex,
+//                  initialIndex: widget.initialIndex,
                   tabBarHeight: widget.tabBarHeight,
                   tabBarColor: widget.tabBarColor ?? GFColors.PRIMARY,
                   controller: widget.controller,