From 5b3bdc1d58e26dd4bbcc7150ff1fc2afbb232f54 Mon Sep 17 00:00:00 2001
From: imaN Khoshabi <ikhoshabi@cafebazaar.ir>
Date: Thu, 1 Apr 2021 17:34:19 +0430
Subject: [PATCH] Add `textDirection` property in AxisTitles class.

---
 CHANGELOG.md                                          | 1 +
 lib/src/chart/base/axis_chart/axis_chart_data.dart    | 6 ++++++
 lib/src/chart/base/axis_chart/axis_chart_painter.dart | 8 ++++----
 3 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 19fcc27a4..abc8b8638 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
 * [IMPROVEMENT] Added `FlDotCrossPainter` which extends `FlDotPainter` to paint X marks on line chart spots.
 * [IMPROVEMENT] Added `textDirection` property in [LineTooltipItem](https://github.com/imaNNeoFighT/fl_chart/blob/master/repo_files/documentations/line_chart.md#linetooltipitem), [BarTooltipItem](https://github.com/imaNNeoFighT/fl_chart/blob/master/repo_files/documentations/bar_chart.md#bartooltipitem) and [ScatterTooltipItem](https://github.com/imaNNeoFighT/fl_chart/blob/master/repo_files/documentations/scatter_chart.md#scattertooltipitem). It allows you to support rtl languages in tooltips.
 * [IMPROVEMENT] Added `textDirection` property in [SideTitles](https://github.com/imaNNeoFighT/fl_chart/blob/master/repo_files/documentations/base_chart.md#sidetitles) class, #531. It allows you to support rtl languages in side titles.
+* [IMPROVEMENT] Added `textDirection` property in [AxisTitles](https://github.com/imaNNeoFighT/fl_chart/blob/master/repo_files/documentations/base_chart.md#AxisTitle) class. It allows you to support rtl languages in axis titles.
 * [BUGFIX] Fixed some bugs on drawing PieChart (for example when we have only one section), #582, 
 * [BREAKING] Border of pieChart now is hide by default (you can show it using `borderData: FlBorderData(show: true)`.
 * [BREAKING] You cannot set `0` value on [PieChartSectionData](https://github.com/imaNNeoFighT/fl_chart/blob/master/repo_files/documentations/pie_chart.md#piechartsectiondata).value anymore, instead remove it from list.
diff --git a/lib/src/chart/base/axis_chart/axis_chart_data.dart b/lib/src/chart/base/axis_chart/axis_chart_data.dart
index 12348144c..f8cb2a7a7 100644
--- a/lib/src/chart/base/axis_chart/axis_chart_data.dart
+++ b/lib/src/chart/base/axis_chart/axis_chart_data.dart
@@ -134,6 +134,9 @@ class AxisTitle with EquatableMixin {
   /// Determines alignment of this title.
   final TextAlign textAlign;
 
+  /// Determines direction of this title
+  final TextDirection textDirection;
+
   /// Determines margin of this title.
   final double margin;
 
@@ -141,6 +144,7 @@ class AxisTitle with EquatableMixin {
   /// [titleText] determines the text, and
   /// [textStyle] determines the style of this.
   /// [textAlign] determines alignment of this title,
+  /// [textDirection] determines direction of this title.
   /// [BaseChartPainter] uses [reservedSize] for assigning
   /// a space for drawing this side title, it used for
   /// some calculations.
@@ -161,6 +165,7 @@ class AxisTitle with EquatableMixin {
               color: Colors.black,
               fontSize: 11,
             ),
+        textDirection = textDirection ?? TextDirection.ltr,
         textAlign = textAlign ?? TextAlign.center,
         margin = margin ?? 4;
 
@@ -172,6 +177,7 @@ class AxisTitle with EquatableMixin {
       reservedSize: lerpDouble(a.reservedSize, b.reservedSize, t),
       textStyle: TextStyle.lerp(a.textStyle.copyWith(fontSize: a.textStyle.fontSize),
           b.textStyle.copyWith(fontSize: b.textStyle.fontSize), t),
+      textDirection: b.textDirection,
       textAlign: b.textAlign,
       margin: lerpDouble(a.margin, b.margin, t),
     );
diff --git a/lib/src/chart/base/axis_chart/axis_chart_painter.dart b/lib/src/chart/base/axis_chart/axis_chart_painter.dart
index 18b743c5b..f484db56d 100644
--- a/lib/src/chart/base/axis_chart/axis_chart_painter.dart
+++ b/lib/src/chart/base/axis_chart/axis_chart_painter.dart
@@ -59,7 +59,7 @@ abstract class AxisChartPainter<D extends AxisChartData> extends BaseChartPainte
       final tp = TextPainter(
           text: span,
           textAlign: leftTitle.textAlign,
-          textDirection: TextDirection.ltr,
+          textDirection: leftTitle.textDirection,
           textScaleFactor: holder.textScale);
       tp.layout(minWidth: viewSize.height);
       canvasWrapper.save();
@@ -78,7 +78,7 @@ abstract class AxisChartPainter<D extends AxisChartData> extends BaseChartPainte
       final tp = TextPainter(
           text: span,
           textAlign: topTitle.textAlign,
-          textDirection: TextDirection.ltr,
+          textDirection: topTitle.textDirection,
           textScaleFactor: holder.textScale);
       tp.layout(minWidth: viewSize.width);
       canvasWrapper.drawText(
@@ -92,7 +92,7 @@ abstract class AxisChartPainter<D extends AxisChartData> extends BaseChartPainte
       final tp = TextPainter(
           text: span,
           textAlign: rightTitle.textAlign,
-          textDirection: TextDirection.ltr,
+          textDirection: rightTitle.textDirection,
           textScaleFactor: holder.textScale);
       tp.layout(minWidth: viewSize.height);
       canvasWrapper.save();
@@ -111,7 +111,7 @@ abstract class AxisChartPainter<D extends AxisChartData> extends BaseChartPainte
       final tp = TextPainter(
           text: span,
           textAlign: bottomTitle.textAlign,
-          textDirection: TextDirection.ltr,
+          textDirection: bottomTitle.textDirection,
           textScaleFactor: holder.textScale);
       tp.layout(minWidth: viewSize.width);
       canvasWrapper.drawText(