From 9536295b5ef0c0ad550b44d773dcd753b06f28ac Mon Sep 17 00:00:00 2001
From: "hardi.jarvis@gmail.com" <jarvis@123>
Date: Tue, 27 Oct 2020 00:27:03 +0530
Subject: [PATCH] Y Axis Lines display issue resolved.

---
 lib/src/bezier_chart_config.dart |  3 ++-
 lib/src/bezier_chart_widget.dart | 19 ++++++++++++++++---
 2 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/lib/src/bezier_chart_config.dart b/lib/src/bezier_chart_config.dart
index d246e7a..3ab1f13 100644
--- a/lib/src/bezier_chart_config.dart
+++ b/lib/src/bezier_chart_config.dart
@@ -91,7 +91,7 @@ class BezierChartConfig {
   final double contentWidth;
 
   ///`true` if you want to display a vertical line on each X data point, it only works when there is one `BezierLine`.
-  final bool displayLinesXAxis;
+  final bool displayLinesXAxis, displayLinesYAxis;
 
   ///Color for the vertical line in each X point, only works when `displayLinesXAxis` is true
   final Color xLinesColor;
@@ -123,6 +123,7 @@ class BezierChartConfig {
     this.verticalIndicatorFixedPosition = false,
     this.startYAxisFromNonZeroValue = true,
     this.displayLinesXAxis = false,
+    this.displayLinesYAxis = false,
     this.stepsYAxis,
     this.xLinesColor = Colors.grey,
     this.displayDataPointWhenNoValue = true,
diff --git a/lib/src/bezier_chart_widget.dart b/lib/src/bezier_chart_widget.dart
index a1032b5..c47a26f 100644
--- a/lib/src/bezier_chart_widget.dart
+++ b/lib/src/bezier_chart_widget.dart
@@ -1,13 +1,13 @@
 import 'dart:math';
 import 'dart:ui';
+
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
-
-import 'bezier_line.dart';
-import 'bezier_chart_config.dart';
 import 'package:intl/intl.dart' as intl;
 
+import 'bezier_chart_config.dart';
+import 'bezier_line.dart';
 import 'my_single_child_scroll_view.dart';
 
 typedef FooterValueBuilder = String Function(double value);
@@ -1191,6 +1191,19 @@ class _BezierChartPainter extends CustomPainter {
           canvas.drawLine(
               Offset(valueX, height), Offset(valueX, valueY), paintXLines);
         }
+        if (config.displayLinesYAxis) {
+          double yVal = valueY;
+          // Y axis Horizontal Line here.
+          double yHeight = height -
+              _getRealValue(
+                yVal - (config.startYAxisFromNonZeroValue ? minYValue : 0.0),
+                height,
+                _maxValueY,
+              );
+
+          canvas.drawLine(
+              Offset(0, yHeight), Offset(size.width, yHeight), paintXLines);
+        }
 
         if (lastPoint == null) {
           lastPoint = _AxisValue(x: valueX, y: valueY);