Draw gridLines even when there is no line to show in the Line Chart, #…

…1691

CHANGELOG.md

@@ -1,5 +1,6 @@
 ## newVersion
 * **BUGFIX** Fix a memory leak issue in the axis-based charts, there was a logic to calculate and cache the minX, maxX, minY and maxY properties to reduce the computation cost. But it caused some memory issues, as we don't have a quick solution for this, we disabled the caching logic for now, later we can move the calculation logic to the render objects to keep and update them only when the data is changed, #1106, #1693
+* **BUGFIX** Fix showing grid lines even when there is no line to show in the LineChart, #1691
 
 ## 0.68.0
 * **Improvement** (by @imaNNeo) Update LineChartSample6 to implement a way to show a tooltip on a single spot, #1620

example/macos/Podfile.lock

@@ -32,4 +32,4 @@ SPEC CHECKSUMS:
 
 PODFILE CHECKSUM: 353c8bcc5d5b0994e508d035b5431cfe18c1dea7
 
-COCOAPODS: 1.14.3
+COCOAPODS: 1.15.2

lib/src/chart/line_chart/line_chart_painter.dart

@@ -62,6 +62,7 @@ class LineChartPainter extends AxisChartPainter<LineChartData> {
     PaintHolder<LineChartData> holder,
   ) {
     final data = holder.data;
+    super.paint(context, canvasWrapper, holder);
     if (data.lineBarsData.isEmpty) {
       return;
     }
@@ -80,8 +81,6 @@ class LineChartPainter extends AxisChartPainter<LineChartData> {
       clipToBorder(canvasWrapper, holder);
     }
 
-    super.paint(context, canvasWrapper, holder);
-
     for (final betweenBarsData in data.betweenBarsData) {
       drawBetweenBarsArea(canvasWrapper, data, betweenBarsData, holder);
     }