From 4c21560b6064eba9b688fb374bc76e848e6478ce Mon Sep 17 00:00:00 2001
From: Arav Khandelwal <hungerbox@Aravs-MacBook-Air.local>
Date: Tue, 3 Sep 2024 12:24:26 +0530
Subject: [PATCH] custom radius addition for arros tip curve

---
 lib/src/bubble_shape.dart  | 82 +++++++++++++++++++++++++++++++++-----
 lib/src/super_tooltip.dart |  3 ++
 2 files changed, 76 insertions(+), 9 deletions(-)

diff --git a/lib/src/bubble_shape.dart b/lib/src/bubble_shape.dart
index 3dbfeaa..a33070e 100644
--- a/lib/src/bubble_shape.dart
+++ b/lib/src/bubble_shape.dart
@@ -9,6 +9,7 @@ class BubbleShape extends ShapeBorder {
     required this.preferredDirection,
     required this.target,
     required this.borderRadius,
+    required this.arrowTipRadius,
     required this.arrowBaseWidth,
     required this.arrowTipDistance,
     required this.borderColor,
@@ -24,6 +25,7 @@ class BubbleShape extends ShapeBorder {
   final double arrowBaseWidth;
   final double arrowTipDistance;
   final double borderRadius;
+  final double arrowTipRadius;
   final Color borderColor;
   final double borderWidth;
   final double? left, top, right, bottom;
@@ -93,7 +95,24 @@ class BubbleShape extends ShapeBorder {
             ),
             rect.top,
           )
-          ..lineTo(target.dx, target.dy + arrowTipDistance) // up to arrow tip
+          // up to arrow tip where the curve starts
+          ..lineTo(
+              target.dx + arrowTipRadius / sqrt(2), //sin and cos 45 = 1/root(2)
+              target.dy +
+                  arrowTipDistance -
+                  (arrowTipRadius - arrowTipRadius / sqrt(2)))
+
+          //arc for the tip
+          ..arcToPoint(
+              Offset(
+                  target.dx - arrowTipRadius / sqrt(2),
+                  target.dy +
+                      arrowTipDistance -
+                      (arrowTipRadius - arrowTipRadius / sqrt(2))),
+              radius: Radius.circular(arrowTipRadius),
+              clockwise: false)
+
+          //  down /
           ..lineTo(
             max(
               min(
@@ -103,8 +122,7 @@ class BubbleShape extends ShapeBorder {
               rect.left + topLeftRadius,
             ),
             rect.top,
-          ) //  down /
-
+          )
           ..lineTo(rect.left + topLeftRadius, rect.top)
           ..arcToPoint(
             Offset(rect.left, rect.top + topLeftRadius),
@@ -130,10 +148,23 @@ class BubbleShape extends ShapeBorder {
                   rect.right - bottomRightRadius),
               rect.bottom)
 
-          // up to arrow tip   \
-          ..lineTo(target.dx, target.dy - arrowTipDistance)
+          // down to arrow tip curvature start\
+          ..lineTo(
+              target.dx + arrowTipRadius / sqrt(2), //sin and cos 45 = 1/root(2)
+              target.dy -
+                  arrowTipDistance +
+                  (arrowTipRadius - arrowTipRadius / sqrt(2)))
 
-          //  down /
+          //arc for the tip
+          ..arcToPoint(
+              Offset(
+                  target.dx - arrowTipRadius / sqrt(2),
+                  target.dy -
+                      arrowTipDistance +
+                      (arrowTipRadius - arrowTipRadius / sqrt(2))),
+              radius: Radius.circular(arrowTipRadius))
+
+          //  up /
           ..lineTo(
               max(
                   min(target.dx - arrowBaseWidth / 2,
@@ -155,8 +186,25 @@ class BubbleShape extends ShapeBorder {
                   min(target.dy - arrowBaseWidth / 2,
                       rect.bottom - bottomRightRadius - arrowBaseWidth),
                   rect.top + topRightRadius))
+
+          // right to arrow tip to the start point of the arc \
           ..lineTo(
-              target.dx - arrowTipDistance, target.dy) // right to arrow tip   \
+              target.dx -
+                  arrowTipDistance +
+                  (arrowTipRadius - arrowTipRadius / sqrt(2)),
+              target.dy - arrowTipRadius / sqrt(2))
+
+          //arc for the tip
+          ..arcToPoint(
+            Offset(
+              target.dx -
+                  arrowTipDistance +
+                  (arrowTipRadius - arrowTipRadius / sqrt(2)),
+              target.dy + arrowTipRadius / sqrt(2),
+            ),
+            radius: Radius.circular(arrowTipRadius),
+          )
+
           //  left /
           ..lineTo(
               rect.right,
@@ -181,8 +229,23 @@ class BubbleShape extends ShapeBorder {
                       rect.bottom - bottomLeftRadius - arrowBaseWidth),
                   rect.top + topLeftRadius))
 
-          //left to arrow tip   /
-          ..lineTo(target.dx + arrowTipDistance, target.dy)
+          //left to arrow tip till curve start/
+
+          ..lineTo(
+              target.dx +
+                  arrowTipDistance -
+                  (arrowTipRadius - arrowTipRadius / sqrt(2)),
+              target.dy - arrowTipRadius / sqrt(2))
+
+          //arc for the tip
+          ..arcToPoint(
+              Offset(
+                  target.dx +
+                      arrowTipDistance -
+                      (arrowTipRadius - arrowTipRadius / sqrt(2)),
+                  target.dy + arrowTipRadius / sqrt(2)),
+              radius: Radius.circular(arrowTipRadius),
+              clockwise: false)
 
           //  right \
           ..lineTo(
@@ -288,6 +351,7 @@ class BubbleShape extends ShapeBorder {
       preferredDirection: preferredDirection,
       target: target,
       borderRadius: borderRadius,
+      arrowTipRadius: arrowTipRadius,
       arrowBaseWidth: arrowBaseWidth,
       arrowTipDistance: arrowTipDistance,
       borderColor: borderColor,
diff --git a/lib/src/super_tooltip.dart b/lib/src/super_tooltip.dart
index c46463f..9e9ef80 100644
--- a/lib/src/super_tooltip.dart
+++ b/lib/src/super_tooltip.dart
@@ -44,6 +44,7 @@ class SuperTooltip extends StatefulWidget {
   final Duration fadeOutDuration;
   final double arrowLength;
   final double arrowBaseWidth;
+  final double arrowTipRadius;
   final double arrowTipDistance;
   final double borderRadius;
   final double borderWidth;
@@ -120,6 +121,7 @@ class SuperTooltip extends StatefulWidget {
     this.fadeOutDuration = const Duration(milliseconds: 0),
     this.arrowLength = 20.0,
     this.arrowBaseWidth = 20.0,
+    this.arrowTipRadius = 0.0,
     this.arrowTipDistance = 2.0,
     this.touchThroughAreaShape = ClipAreaShape.oval,
     this.touchThroughAreaCornerRadius = 5.0,
@@ -426,6 +428,7 @@ class _SuperTooltipState extends State<SuperTooltip>
                                 shape: BubbleShape(
                                   arrowBaseWidth: widget.arrowBaseWidth,
                                   arrowTipDistance: widget.arrowTipDistance,
+                                  arrowTipRadius: widget.arrowTipRadius,
                                   borderColor: widget.borderColor,
                                   borderRadius: widget.borderRadius,
                                   borderWidth: widget.borderWidth,