From 1820a0034230524822a7112994d2842fcdcf01e2 Mon Sep 17 00:00:00 2001
From: Takeshi Tsukamoto <dev@itome.team>
Date: Wed, 1 Nov 2023 11:08:20 +0900
Subject: [PATCH 1/2] Show tooltip on top of bar chart

---
 lib/src/chart/bar_chart/bar_chart_painter.dart | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/lib/src/chart/bar_chart/bar_chart_painter.dart b/lib/src/chart/bar_chart/bar_chart_painter.dart
index 407c0fb46..d45978a7a 100644
--- a/lib/src/chart/bar_chart/bar_chart_painter.dart
+++ b/lib/src/chart/bar_chart/bar_chart_painter.dart
@@ -388,12 +388,17 @@ class BarChartPainter extends AxisChartPainter<BarChartData> {
     final zeroY = getPixelY(0, viewSize, holder);
     final barTopY = min(zeroY, barOffset.dy);
     final barBottomY = max(zeroY, barOffset.dy);
-    final drawTooltipOnTop = tooltipData.direction == TooltipDirection.top ||
-        (tooltipData.direction == TooltipDirection.auto &&
-            showOnRodData.isUpward());
-    final tooltipTop = drawTooltipOnTop
-        ? barTopY - tooltipHeight - tooltipData.tooltipMargin
-        : barBottomY + tooltipData.tooltipMargin;
+    final double tooltipTop;
+    if (tooltipData.showOnTopOfTheChartBoxArea) {
+      tooltipTop = 0 - tooltipHeight - tooltipData.tooltipMargin;
+    } else {
+      final drawTooltipOnTop = tooltipData.direction == TooltipDirection.top ||
+          (tooltipData.direction == TooltipDirection.auto &&
+              showOnRodData.isUpward());
+      tooltipTop = drawTooltipOnTop
+          ? barTopY - tooltipHeight - tooltipData.tooltipMargin
+          : barBottomY + tooltipData.tooltipMargin;
+    }
 
     final tooltipLeft = getTooltipLeft(
       barOffset.dx,

From 532847f7dbf0e0fa15d56aa8cba54b2e139a8081 Mon Sep 17 00:00:00 2001
From: Takeshi Tsukamoto <dev@itome.team>
Date: Wed, 1 Nov 2023 11:13:04 +0900
Subject: [PATCH 2/2] Add showOnTopOfTheChartBoxArea

---
 lib/src/chart/bar_chart/bar_chart_data.dart | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/src/chart/bar_chart/bar_chart_data.dart b/lib/src/chart/bar_chart/bar_chart_data.dart
index 6292faf92..76e07c165 100644
--- a/lib/src/chart/bar_chart/bar_chart_data.dart
+++ b/lib/src/chart/bar_chart/bar_chart_data.dart
@@ -705,6 +705,7 @@ class BarTouchTooltipData with EquatableMixin {
     TooltipDirection? direction,
     double? rotateAngle,
     BorderSide? tooltipBorder,
+    bool? showOnTopOfTheChartBoxArea,
   })  : tooltipBgColor = tooltipBgColor ?? Colors.blueGrey.darken(15),
         tooltipRoundedRadius = tooltipRoundedRadius ?? 4,
         tooltipPadding = tooltipPadding ??
@@ -720,6 +721,7 @@ class BarTouchTooltipData with EquatableMixin {
         direction = direction ?? TooltipDirection.auto,
         rotateAngle = rotateAngle ?? 0.0,
         tooltipBorder = tooltipBorder ?? BorderSide.none,
+        showOnTopOfTheChartBoxArea = showOnTopOfTheChartBoxArea ?? false,
         super();
 
   /// The tooltip background color.
@@ -761,6 +763,8 @@ class BarTouchTooltipData with EquatableMixin {
   /// The tooltip border color.
   final BorderSide tooltipBorder;
 
+  final bool showOnTopOfTheChartBoxArea;
+
   /// Used for equality check, see [EquatableMixin].
   @override
   List<Object?> get props => [