feat: scroll to currentTime when no items

CHANGELOG.md

@@ -10,3 +10,7 @@
 
 * Added horizontal variant
 * Adjustable size for the component
+
+## [1.1.0] - 17 August 2023
+
+* Set scrolling to the current time by default if there are no blocks

example/.metadata

@@ -1,11 +1,11 @@
 # This file tracks properties of this Flutter project.
 # Used by Flutter tool to assess capabilities and perform upgrades etc.
 #
-# This file should be version controlled.
+# This file should be version controlled and should not be manually edited.
 
 version:
-  revision: 52b3dc25f6471c27b2144594abb11c741cb88f57
-  channel: stable
+  revision: "efbf63d9c66b9f6ec30e9ad4611189aa80003d31"
+  channel: "stable"
 
 project_type: app
 
@@ -13,11 +13,11 @@ project_type: app
 migration:
   platforms:
     - platform: root
-      create_revision: 52b3dc25f6471c27b2144594abb11c741cb88f57
-      base_revision: 52b3dc25f6471c27b2144594abb11c741cb88f57
-    - platform: ios
-      create_revision: 52b3dc25f6471c27b2144594abb11c741cb88f57
-      base_revision: 52b3dc25f6471c27b2144594abb11c741cb88f57
+      create_revision: efbf63d9c66b9f6ec30e9ad4611189aa80003d31
+      base_revision: efbf63d9c66b9f6ec30e9ad4611189aa80003d31
+    - platform: web
+      create_revision: efbf63d9c66b9f6ec30e9ad4611189aa80003d31
+      base_revision: efbf63d9c66b9f6ec30e9ad4611189aa80003d31
 
   # User provided section
 

example/pubspec.lock

@@ -174,7 +174,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "1.0.0"
+    version: "1.1.0"
   vector_math:
     dependency: transitive
     description:

example/pubspec.yaml

@@ -3,10 +3,10 @@ description: Timetable Widget
 
 publish_to: 'none'
 
-version: 1.0.0+1
+version: 1.1.0+2
 
 environment:
-  sdk: ">=2.17.6 <3.0.0"
+  sdk: ">=3.0.0 <4.0.0"
 
 dependencies:
   flutter:

lib/src/timetable.dart

@@ -22,6 +22,7 @@ class Timetable extends StatefulWidget {
     this.tableDirection = Axis.vertical,
     this.timeBlocks = const [],
     this.size,
+    this.initialScrollTime,
     this.scrollController,
     this.scrollPhysics,
     this.startHour = 0,
@@ -63,6 +64,9 @@ class Timetable extends StatefulWidget {
   /// The theme of the timetable.
   final TableTheme theme;
 
+  /// The initial time to scroll to if there are no timeblocks. If nothing is provided it will scroll to the current time or to the first block if there is one.
+  final TimeOfDay? initialScrollTime;
+
   /// The scroll controller to control the scrolling of the timetable.
   final ScrollController? scrollController;
 
@@ -90,6 +94,8 @@ class _TimetableState extends State<Timetable> {
         widget.scrollController ?? ScrollController(initialScrollOffset: 0);
     if (widget.timeBlocks.isNotEmpty) {
       _scrollToFirstBlock();
+    } else {
+      _scrollToInitialTime();
     }
   }
 
@@ -224,8 +230,7 @@ class _TimetableState extends State<Timetable> {
     );
   }
 
-  Size _calculateTableStart(Axis axis) {
-    return Size(
+  Size _calculateTableStart(Axis axis) => Size(
         (axis == Axis.horizontal)
             ? _calculateTableTextSize().width / 2
             : _calculateTableTextSize().width +
@@ -235,10 +240,8 @@ class _TimetableState extends State<Timetable> {
             ? _calculateTableTextSize().height / 2
             : _calculateTableTextSize().height,
       );
-  }
 
-  Widget _showBlock(TimeBlock block, {double linePadding = 0}) {
-    return Block(
+  Widget _showBlock(TimeBlock block, {double linePadding = 0}) => Block(
         blockDirection: widget.tableDirection,
         linePadding: linePadding,
         start: block.start,
@@ -249,7 +252,6 @@ class _TimetableState extends State<Timetable> {
         blockColor: widget.blockColor,
         child: block.child,
       );
-  }
 
   void _scrollToFirstBlock() {
     SchedulerBinding.instance.addPostFrameCallback((_) {
@@ -271,18 +273,31 @@ class _TimetableState extends State<Timetable> {
     });
   }
 
-  Size _calculateTableTextSize() {
-    return (TextPainter(
+  void _scrollToInitialTime() {
+    SchedulerBinding.instance.addPostFrameCallback((_) {
+      var startingTime = widget.initialScrollTime ?? TimeOfDay.now();
+      var initialOffset =
+          (widget.hourDimension * (widget.endHour - widget.startHour)) *
+                  ((startingTime.hour - widget.startHour) /
+                      (widget.endHour - widget.startHour)) +
+              _calculateTableTextSize().width / 2;
+      _scrollController.jumpTo(
+        initialOffset,
+      );
+    });
+  }
+
+  Size _calculateTableTextSize() => (TextPainter(
         text: TextSpan(
           text: '22:22',
-        style: widget.theme.timeStyle ?? Theme.of(context).textTheme.bodyLarge,
+          style:
+              widget.theme.timeStyle ?? Theme.of(context).textTheme.bodyLarge,
         ),
         maxLines: 1,
         textScaleFactor: MediaQuery.of(context).textScaleFactor,
         textDirection: TextDirection.ltr,
       )..layout())
           .size;
-  }
 
   double calculateTableHeight() {
     var sum = 0.0;

pubspec.yaml

@@ -1,10 +1,10 @@
 name: timetable
 description: Flutter package to create a Timetable Widget that display blocks of widgets inside a timetable.
-version: 1.0.0
+version: 1.1.0
 repository: https://github.com/Iconica-Development/timetable
 
 environment:
-  sdk: ">=2.18.0 <3.0.0"
+  sdk: ">=3.0.0 <4.0.0"
   flutter: ">=1.17.0"
 
 dependencies: