feat(line_chart): add List<InlineSpan>? children parameter to LineToo…

…ltipItem for enhanced styling
creky · Mar 20, 2021 · 4437045 · 4437045
1 parent a521525
commit 4437045
Show file tree

Hide file tree

Showing 2 changed files with 15 additions and 3 deletions.
diff --git a/lib/src/chart/line_chart/line_chart_data.dart b/lib/src/chart/line_chart/line_chart_data.dart
@@ -1550,8 +1550,15 @@ class LineTooltipItem with EquatableMixin {
   /// Style of showing text.
   final TextStyle textStyle;
 
-  /// Shows a [text] with [textStyle] as a row in the tooltip popup.
-  LineTooltipItem(this.text, this.textStyle);
+  /// List<InlineSpan> add further style and format to the text of the tooltip
+  final List<InlineSpan>? children;
+
+  /// Shows a [text] with [textStyle] and optional List<InlineSpan> [children] as a row in the tooltip popup.
+  LineTooltipItem(
+    this.text,
+    this.textStyle, {
+    this.children,
+  });
 
   /// Used for equality check, see [EquatableMixin].
   @override

diff --git a/lib/src/chart/line_chart/line_chart_painter.dart b/lib/src/chart/line_chart/line_chart_painter.dart
@@ -1115,7 +1115,12 @@ class LineChartPainter extends AxisChartPainter<LineChartData>
         continue;
       }
 
-      final span = TextSpan(style: tooltipItem.textStyle, text: tooltipItem.text);
+      final span = TextSpan(
+        style: tooltipItem.textStyle,
+        text: tooltipItem.text,
+        children: tooltipItem.children,
+      );
+
       final tp = TextPainter(
           text: span,
           textAlign: TextAlign.center,