syncfusion · JayavigneshwaranG · Apr 1, 2021 · Apr 1, 2021
diff --git a/packages/syncfusion_flutter_barcodes/example/analysis_options.yaml b/packages/syncfusion_flutter_barcodes/example/analysis_options.yaml
@@ -0,0 +1,3 @@
+analyzer:
+  errors:
+    invalid_dependency: ignore
diff --git a/packages/syncfusion_flutter_calendar/CHANGELOG.md b/packages/syncfusion_flutter_calendar/CHANGELOG.md
@@ -1,16 +1,16 @@
-## [Unreleased version]
-** Bug fixes**
+## [19.1.54] - 03/30/2021
+**Bug fixes**
 * Now, the localization is working properly for the spanned appointment count text in Flutter event calendar.
 
 **Features**
 * Provided the LoadMore support for the event calendar.
 * Provided the negative values support for BYSETPOS in recurrence to display the appointment in the last and second last week of a month.
-* Provided the support for the month header format in the Flutter event calendar.
-* Provided the support for Getting appointments between the start and end dates in the Flutter event calendar.
+* Provided the support for the header date format in the Flutter event calendar.
+* Provided the support for getting appointments between the start and end date range by using the `getVisibleAppointments` method in the Flutter event calendar.
 * Provided the current time indicator support for timeslot views.
 * Provided the support for enabling and disabling the swiping interaction in the Flutter event calendar.
 * Provided the support for the selected date changed callback in the Flutter event calendar.
-* Improved the timeline views disabled slots appearance in the Flutter event calendar.
+* Improved the timeslot views disabled slots appearance in the Flutter event calendar.
 
 **Breaking changes**
 * The `startTime` and `endTime` properties of the `Appointment` class are now marked as required.

diff --git a/packages/syncfusion_flutter_calendar/README.md b/packages/syncfusion_flutter_calendar/README.md
@@ -51,8 +51,6 @@ The Flutter Calendar widget has built-in configurable views such as day, week, w
 
 * **Load more** - Load appointments on-demand whenever users switch from one view to another or when scrolling to the start or end position of the schedule view.
 
-![load_more](https://cdn.syncfusion.com/content/images/FTControl/Flutter/calendar/load_more_gif.gif)
-
 * **Special time regions** - Disable interactions and selections for specific time ranges. This is useful when you want to block user interaction during holidays or another special events and to highlight those time slots.
 
 ![special_time_regions](https://cdn.syncfusion.com/content/images/FTControl/Flutter/flutter-calendar-special-time-regions.png)

diff --git a/packages/syncfusion_flutter_charts/example/pubspec.yaml b/packages/syncfusion_flutter_charts/example/pubspec.yaml
@@ -10,7 +10,7 @@ dependencies:
   flutter:
     sdk: flutter
   syncfusion_flutter_charts: 
-    path: ../syncfusion_flutter_charts
+    path: ../
   cupertino_icons: ^1.0.2
 
 flutter:

diff --git a/packages/syncfusion_flutter_charts/lib/charts.dart b/packages/syncfusion_flutter_charts/lib/charts.dart
@@ -12,7 +12,6 @@
 library charts;
 
 import 'dart:async';
-import 'dart:io' show Platform;
 import 'dart:math' as math_lib;
 import 'dart:math' as math;
 import 'dart:math';

diff --git a/packages/syncfusion_flutter_charts/lib/src/chart/axis/axis_renderer.dart b/packages/syncfusion_flutter_charts/lib/src/chart/axis/axis_renderer.dart
@@ -186,6 +186,7 @@ class _CartesianAxisRendererState extends State<_CartesianAxisRenderer>
       if ((widget.chartState._requireInvertedAxis
               ? axisRenderer._orientation == AxisOrientation.vertical
               : axisRenderer._orientation == AxisOrientation.horizontal) &&
+          // ignore: unnecessary_null_comparison
           widget.chartState._oldAxisRenderers != null &&
           widget.chartState._oldAxisRenderers.isNotEmpty &&
           (axisRenderer._axis.visibleMinimum != null ||
@@ -390,6 +391,7 @@ class _CartesianAxesPainter extends CustomPainter {
   /// To draw chart axes
   void _drawAxes(Canvas canvas) {
     final double animationFactor =
+        // ignore: unnecessary_null_comparison
         axisAnimation != null ? axisAnimation.value : 1;
     for (int axisIndex = 0;
         axisIndex < chartState._chartAxis._axisRenderersCollection.length;
@@ -401,6 +403,7 @@ class _CartesianAxesPainter extends CustomPainter {
           (axis.tickPosition == TickPosition.inside) ? true : false;
       ChartAxisRenderer? oldAxisRenderer;
       bool needAnimate = false;
+      // ignore: unnecessary_null_comparison
       if (chartState._oldAxisRenderers != null &&
           chartState._oldAxisRenderers.isNotEmpty &&
           axisRenderer._visibleRange != null) {

diff --git a/packages/syncfusion_flutter_charts/lib/src/chart/axis/plotband.dart b/packages/syncfusion_flutter_charts/lib/src/chart/axis/plotband.dart
@@ -875,6 +875,7 @@ class _PlotBandPainter extends CustomPainter {
       Canvas canvas, ChartAxis axis) {
     final List<double> dashArray = plotBand.dashArray;
     bool needDashLine = true;
+    // ignore: unnecessary_null_comparison
     if (plotBandRect != null && plotBand.color != null) {
       Path? path;
       for (int i = 1; i < dashArray.length; i = i + 2) {
@@ -902,6 +903,7 @@ class _PlotBandPainter extends CustomPainter {
       } else {
         dashPath = path;
       }
+      // ignore: unnecessary_null_comparison
       if (path != null) {
         Paint fillPaint;
         if (plotBand.gradient != null) {
@@ -915,7 +917,9 @@ class _PlotBandPainter extends CustomPainter {
         }
         canvas.drawPath(path, fillPaint);
         if (plotBand.borderWidth > 0 &&
+            // ignore: unnecessary_null_comparison
             plotBand.borderColor != null &&
+            // ignore: unnecessary_null_comparison
             dashPath != null) {
           canvas.drawPath(
               dashPath,

diff --git a/packages/syncfusion_flutter_charts/lib/src/chart/base/chart_base.dart b/packages/syncfusion_flutter_charts/lib/src/chart/base/chart_base.dart
@@ -1424,6 +1424,7 @@ class SfCartesianChartState extends State<SfCartesianChart>
     _needsRepaintChart(
         this, _chartAxis._axisRenderersCollection, oldWidgetSeriesRenderers);
     _isLegendToggled = false;
+    // ignore: unnecessary_null_comparison
     if (_legendWidgetContext != null && _legendWidgetContext.isNotEmpty) {
       _legendWidgetContext.clear();
     }
@@ -1583,6 +1584,7 @@ class SfCartesianChartState extends State<SfCartesianChart>
       [SfCartesianChart? oldWidget,
       List<CartesianSeriesRenderer>? oldWidgetSeriesRenderers,
       List<CartesianSeriesRenderer>? oldWidgetOldSeriesRenderers]) {
+    // ignore: unnecessary_null_comparison
     if (widget.series != null && widget.series.isNotEmpty) {
       if (oldWidget != null) {
         _oldSeriesRenderers = <CartesianSeriesRenderer>[];
@@ -1617,6 +1619,7 @@ class SfCartesianChartState extends State<SfCartesianChart>
 
         if (index != null &&
             index < oldWidgetOldSeriesRenderers!.length &&
+            // ignore: unnecessary_null_comparison
             oldWidgetOldSeriesRenderers[index] != null) {
           seriesRenderer = oldWidgetOldSeriesRenderers[index];
         } else {
@@ -1736,6 +1739,7 @@ class SfCartesianChartState extends State<SfCartesianChart>
         }
       }
     }
+    // ignore: unnecessary_null_comparison
     if (_zoomedAxisRendererStates != null &&
         _zoomedAxisRendererStates.isNotEmpty) {
       _zoomedState = false;
@@ -1807,6 +1811,7 @@ class SfCartesianChartState extends State<SfCartesianChart>
 
   Widget _renderTitle() {
     Widget titleWidget;
+    // ignore: unnecessary_null_comparison
     if (_chart.title.text != null && _chart.title.text.isNotEmpty) {
       final Paint titleBackground = Paint()
         ..color = _chart.title.borderColor
@@ -2180,8 +2185,7 @@ class _ContainerArea extends StatelessWidget {
   late CartesianSeries<dynamic, dynamic> _series;
   late XyDataSeriesRenderer _seriesRenderer;
   Offset? _zoomStartPosition;
-  bool _enableMouseHover =
-      kIsWeb || Platform.isLinux || Platform.isMacOS || Platform.isWindows;
+  final bool _enableMouseHover = kIsWeb;
   @override
   Widget build(BuildContext context) {
     final bool isUserInteractionEnabled =
@@ -2414,6 +2418,7 @@ class _ContainerArea extends StatelessWidget {
       _seriesRenderer = _chartState._chartSeries.visibleSeriesRenderers[i]
           as XyDataSeriesRenderer;
       _series = _seriesRenderer._series;
+      // ignore: unnecessary_null_comparison
       if (_seriesRenderer != null &&
           _seriesRenderer._visible! &&
           _series.trendlines != null) {
@@ -2597,6 +2602,7 @@ class _ContainerArea extends StatelessWidget {
               .addStatusListener(_seriesRenderer._animationStatusListener);
         }
       }
+      // ignore: unnecessary_null_comparison
       if (_seriesRenderer != null && _seriesRenderer._visible!) {
         _calculateTrendlineRegion(_chartState, _seriesRenderer);
         _series.selectionBehavior._chartState = _chartState;
@@ -2700,7 +2706,7 @@ class _ContainerArea extends StatelessWidget {
               ..addAll(_series.initialSelectedDataIndexes!);
           }
         }
-
+        // ignore: unnecessary_null_comparison
         if (_seriesRenderer._animationController != null &&
             _series.animationDuration > 0 &&
             (_chartState._oldDeviceOrientation == null ||
@@ -2757,6 +2763,7 @@ class _ContainerArea extends StatelessWidget {
 
   /// Bind the axis widgets
   void _bindAxisWidgets(String renderType) {
+    // ignore: unnecessary_null_comparison
     if (_chartState._chartAxis._axisRenderersCollection != null &&
         _chartState._chartAxis._axisRenderersCollection.isNotEmpty &&
         _chartState._chartAxis._axisRenderersCollection.length > 1) {
@@ -2857,6 +2864,7 @@ class _ContainerArea extends StatelessWidget {
     }
     final Offset position = renderBox.globalToLocal(event.position);
     _touchPosition = position;
+    // ignore: unnecessary_null_comparison
     if (_chartState._chartSeries.visibleSeriesRenderers != null &&
         _chartState._chartSeries.visibleSeriesRenderers.isNotEmpty &&
         chart.selectionGesture == ActivationMode.singleTap &&
@@ -2873,6 +2881,7 @@ class _ContainerArea extends StatelessWidget {
         selectionBehaviorRenderer.onTouchDown(position.dx, position.dy);
       }
     }
+    // ignore: unnecessary_null_comparison
     if (chart.trackballBehavior != null &&
         chart.trackballBehavior.enable &&
         chart.trackballBehavior.activationMode == ActivationMode.singleTap) {
@@ -2884,6 +2893,7 @@ class _ContainerArea extends StatelessWidget {
             .onTouchDown(position.dx, position.dy);
       }
     }
+    // ignore: unnecessary_null_comparison
     if (chart.crosshairBehavior != null &&
         chart.crosshairBehavior.enable &&
         chart.crosshairBehavior.activationMode == ActivationMode.singleTap) {
@@ -2936,12 +2946,14 @@ class _ContainerArea extends StatelessWidget {
     _chartState._zoomPanBehaviorRenderer._delayRedraw = false;
     _chartState._tooltipBehaviorRenderer._isHovering = false;
     final Offset position = renderBox.globalToLocal(event.position);
+    // ignore: unnecessary_null_comparison
     if ((chart.trackballBehavior != null &&
             chart.trackballBehavior.enable &&
             !chart.trackballBehavior.shouldAlwaysShow &&
             chart.trackballBehavior.activationMode !=
                 ActivationMode.doubleTap &&
             _chartState._zoomPanBehaviorRenderer._isPinching != true) ||
+        // ignore: unnecessary_null_comparison
         (chart.zoomPanBehavior != null &&
             ((chart.zoomPanBehavior.enableDoubleTapZooming ||
                     chart.zoomPanBehavior.enablePanning ||
@@ -2953,12 +2965,14 @@ class _ContainerArea extends StatelessWidget {
 
       _chartState._trackballBehaviorRenderer._isLongPressActivated = false;
     }
+    // ignore: unnecessary_null_comparison
     if ((chart.crosshairBehavior != null &&
             chart.crosshairBehavior.enable &&
             !chart.crosshairBehavior.shouldAlwaysShow &&
             chart.crosshairBehavior.activationMode !=
                 ActivationMode.doubleTap &&
             _chartState._zoomPanBehaviorRenderer._isPinching != true) ||
+        // ignore: unnecessary_null_comparison
         (chart.zoomPanBehavior != null &&
             ((chart.zoomPanBehavior.enableDoubleTapZooming ||
                     chart.zoomPanBehavior.enablePanning ||
@@ -3051,8 +3065,10 @@ class _ContainerArea extends StatelessWidget {
             _zoomStartPosition!.dy);
       }
     }
+    // ignore: unnecessary_null_comparison
     if (chart.trackballBehavior != null &&
         chart.trackballBehavior.enable &&
+        // ignore: unnecessary_null_comparison
         _chartState != null &&
         chart.trackballBehavior.activationMode != ActivationMode.doubleTap &&
         position != null) {
@@ -3076,13 +3092,15 @@ class _ContainerArea extends StatelessWidget {
         }
       }
     }
+    // ignore: unnecessary_null_comparison
     if (chart.crosshairBehavior != null &&
         chart.crosshairBehavior.enable &&
         chart.crosshairBehavior.activationMode != ActivationMode.doubleTap &&
         position != null) {
       if (chart.crosshairBehavior.activationMode == ActivationMode.singleTap) {
         _chartState._crosshairBehaviorRenderer
             .onTouchMove(position.dx, position.dy);
+        // ignore: unnecessary_null_comparison
       } else if ((chart.crosshairBehavior != null &&
               chart.crosshairBehavior.activationMode ==
                   ActivationMode.longPress &&
@@ -3140,6 +3158,7 @@ class _ContainerArea extends StatelessWidget {
         }
       }
     }
+    // ignore: unnecessary_null_comparison
     if (_chartState._chartSeries.visibleSeriesRenderers != null &&
         position != null &&
         chart.selectionGesture == ActivationMode.longPress) {
@@ -3151,7 +3170,7 @@ class _ContainerArea extends StatelessWidget {
           selectionSeriesRenderer;
       selectionBehaviorRenderer.onLongPress(position.dx, position.dy);
     }
-
+    // ignore: unnecessary_null_comparison
     if ((chart.trackballBehavior != null &&
             chart.trackballBehavior.enable == true &&
             chart.trackballBehavior.activationMode ==
@@ -3166,6 +3185,7 @@ class _ContainerArea extends StatelessWidget {
             .onTouchDown(position.dx, position.dy);
       }
     }
+    // ignore: unnecessary_null_comparison
     if ((chart.crosshairBehavior != null &&
             chart.crosshairBehavior.enable == true &&
             chart.crosshairBehavior.activationMode ==
@@ -3183,6 +3203,7 @@ class _ContainerArea extends StatelessWidget {
   void _performDoubleTap() {
     if (_tapDownDetails != null) {
       final Offset position = renderBox.globalToLocal(_tapDownDetails!);
+      // ignore: unnecessary_null_comparison
       if (chart.trackballBehavior != null &&
           chart.trackballBehavior.enable &&
           chart.trackballBehavior.activationMode == ActivationMode.doubleTap) {
@@ -3200,6 +3221,7 @@ class _ContainerArea extends StatelessWidget {
         _chartState._isTouchUp = false;
         _chartState._enableDoubleTap = false;
       }
+      // ignore: unnecessary_null_comparison
       if (chart.crosshairBehavior != null &&
           chart.crosshairBehavior.enable &&
           chart.crosshairBehavior.activationMode == ActivationMode.doubleTap) {
@@ -3224,6 +3246,7 @@ class _ContainerArea extends StatelessWidget {
               .onDoubleTap(position.dx, position.dy);
         }
       }
+      // ignore: unnecessary_null_comparison
       if (_chartState._chartSeries.visibleSeriesRenderers != null &&
           chart.selectionGesture == ActivationMode.doubleTap) {
         final CartesianSeriesRenderer selectionSeriesRenderer =
@@ -3263,6 +3286,7 @@ class _ContainerArea extends StatelessWidget {
     }
     final bool panInProgress = chart.zoomPanBehavior.enablePanning &&
         _chartState._zoomPanBehaviorRenderer._previousMovedPosition != null;
+    // ignore: unnecessary_null_comparison
     if (chart.trackballBehavior != null &&
         chart.trackballBehavior.enable &&
         position != null &&
@@ -3277,6 +3301,7 @@ class _ContainerArea extends StatelessWidget {
           _chartState._trackballBehaviorRenderer
               .onTouchMove(position.dx, position.dy);
         }
+        // ignore: unnecessary_null_comparison
       } else if (chart.trackballBehavior != null &&
           chart.trackballBehavior.activationMode == ActivationMode.longPress &&
           _chartState._trackballBehaviorRenderer._isLongPressActivated ==
@@ -3290,6 +3315,7 @@ class _ContainerArea extends StatelessWidget {
         }
       }
     }
+    // ignore: unnecessary_null_comparison
     if (chart.crosshairBehavior != null &&
         chart.crosshairBehavior.enable &&
         chart.crosshairBehavior.activationMode != ActivationMode.doubleTap &&
@@ -3298,6 +3324,7 @@ class _ContainerArea extends StatelessWidget {
       if (chart.crosshairBehavior.activationMode == ActivationMode.singleTap) {
         _chartState._crosshairBehaviorRenderer
             .onTouchMove(position.dx, position.dy);
+        // ignore: unnecessary_null_comparison
       } else if (chart.crosshairBehavior != null &&
           chart.crosshairBehavior.activationMode == ActivationMode.longPress &&
           _chartState._crosshairBehaviorRenderer._isLongPressActivated) {
@@ -3488,6 +3515,7 @@ class _ContainerArea extends StatelessWidget {
     chart.trackballBehavior._chartState = chart.tooltipBehavior._chartState =
         chart.zoomPanBehavior._chartState =
             chart.crosshairBehavior._chartState = _chartState;
+    // ignore: unnecessary_null_comparison
     if (chart.trackballBehavior != null && chart.trackballBehavior.enable) {
       if (chart.trackballBehavior.builder != null) {
         _chartState._trackballBehaviorRenderer._trackballTemplate =
@@ -3510,6 +3538,7 @@ class _ContainerArea extends StatelessWidget {
             child: CustomPaint(painter: trackballPainter)));
       }
     }
+    // ignore: unnecessary_null_comparison
     if (chart.crosshairBehavior != null && chart.crosshairBehavior.enable) {
       crosshairPainter = _CrosshairPainter(
           chartState: _chartState,

diff --git a/packages/syncfusion_flutter_charts/lib/src/chart/base/series_base.dart b/packages/syncfusion_flutter_charts/lib/src/chart/base/series_base.dart
@@ -109,6 +109,7 @@ class _ChartSeries {
       final String seriesType = seriesRenderer._seriesType;
       final bool needSorting = series.sortingOrder != SortingOrder.none &&
           series.sortFieldValueMapper != null;
+      // ignore: unnecessary_null_comparison
       if (series.dataSource != null) {
         dynamic xVal;
         dynamic yVal;
@@ -161,6 +162,7 @@ class _ChartSeries {
                     xMax != null ||
                     yMin != null ||
                     yMax != null) &&
+                // ignore: unnecessary_null_comparison
                 _chartState._oldSeriesRenderers != null &&
                 _chartState._oldSeriesRenderers.isNotEmpty) {
               final int seriesIndex = _chartState
@@ -492,6 +494,7 @@ class _ChartSeries {
         if (seriesRenderer._dataPoints.isNotEmpty) {
           groupName = (seriesRenderer._seriesType.contains('stackedarea'))
               ? 'stackedareagroup'
+              // ignore: unnecessary_null_comparison
               : (stackedSeriesBase.groupName == null
                   ? ('series ' + i.toString())
                   : stackedSeriesBase.groupName);
@@ -786,6 +789,7 @@ class _ChartSeries {
 
   ///below method is for indicator rendering
   void _calculateIndicators() {
+    // ignore: unnecessary_null_comparison
     if (chart.indicators != null && chart.indicators.isNotEmpty) {
       dynamic indicator;
       bool existField;