Convert double to int to fix floating point comparison

[franciscrispin]

The GapLocationException could be mistakenly thrown when comparing guest.center.dx == host.width / 2 as both values are doubles. This led to the navigation bar showing up as a blank state. Refer to the screen recording and screen shots attached for reference.

21-08-18-13-22-42.1.mp4

[franciscrispin]

Hi @vizhan-lanars @LanarsInc can I get your review on this PR :)

[vizhan-lanars]

@franciscrispin Could you provide code or steps to reproduce that exception?

[zeeshanahmad0201]

I'm experiencing this issue with the iPhone 15 and above.

I'm using Flutter 3.24.2 and animated_bottom_navigation_bar: ^1.3.3

Steps to reproduce:

1. Use gapLocation: GapLocation.center under AnimatedBottomNavigationBar.builder
2. Use floatingActionButtonLocation: FloatingActionButtonLocation.centerDocked under Scaffold
3. Open the application you will get this error in the logs:

======== Exception caught by rendering library =====================================================
The following GapLocationException was thrown during paint():
Wrong gap location in AnimatedBottomNavigationBar towards FloatingActionButtonLocation => consider use GapLocation.end instead of GapLocation.center or change FloatingActionButtonLocation

When the exception was thrown, this was the stack:
#0 CircularNotchedAndCorneredRectangle.getOuterPath (package:animated_bottom_navigation_bar/src/circular_notched_and_cornered_shape.dart:79:9)
#1 CircularNotchedAndCorneredRectangleClipper.getClip (package:animated_bottom_navigation_bar/src/circular_notch_and_corner_clipper.dart:22:18)
#2 _RenderCustomClip._updateClip (package:flutter/src/rendering/proxy_box.dart:1455:25)
#3 RenderPhysicalShape.paint (package:flutter/src/rendering/proxy_box.dart:2120:5)
#4 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:3268:7)
#5 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:251:13)
#6 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:136:13)
#7 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:3268:7)
#8 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:251:13)
#9 RenderBoxContainerDefaultsMixin.defaultPaint (package:flutter/src/rendering/box.dart:3159:15)
#10 RenderCustomMultiChildLayoutBox.paint (package:flutter/src/rendering/custom_layout.dart:409:5)
#11 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:3268:7)
#12 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:251:13)
#13 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:136:13)
#14 _RenderInkFeatures.paint (package:flutter/src/material/material.dart:609:11)
#15 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:3268:7)
#16 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:251:13)
#17 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:136:13)
#18 RenderPhysicalModel.paint. (package:flutter/src/rendering/proxy_box.dart:2055:15)
#19 PaintingContext.pushClipRRect (package:flutter/src/rendering/object.dart:576:14)
#20 RenderPhysicalModel.paint (package:flutter/src/rendering/proxy_box.dart:2042:21)
#21 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:3268:7)
#22 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:251:13)
#23 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:136:13)
#24 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:3268:7)
#25 PaintingContext.paintChild (package:flutter/src/rendering/object.dart:251:13)
#26 RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:136:13)
#27 RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:3268:7)
#28 PaintingContext._repaintCompositedChild (package:flutter/src/rendering/object.dart:167:11)
#29 PaintingContext.repaintCompositedChild (package:flutter/src/rendering/object.dart:110:5)
#30 PipelineOwner.flushPaint (package:flutter/src/rendering/object.dart:1183:31)
#31 PipelineOwner.flushPaint (package:flutter/src/rendering/object.dart:1193:15)
#32 RendererBinding.drawFrame (package:flutter/src/rendering/binding.dart:604:23)
#33 WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:1164:13)
#34 RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:468:5)
#35 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1397:15)
#36 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1318:9)
#37 SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:1176:5)
#41 _invoke (dart:ui/hooks.dart:314:10)
#42 PlatformDispatcher._drawFrame (dart:ui/platform_dispatcher.dart:419:5)
#43 _drawFrame (dart:ui/hooks.dart:283:31)
(elided 3 frames from dart:async)
The following RenderObject was being processed when the exception was fired: RenderPhysicalShape#8ea2b relayoutBoundary=up2
... parentData: (can use size)
... constraints: BoxConstraints(w=430.0, 0.0<=h<=932.0)
... semantics node: SemanticsNode#8
... Rect.fromLTRB(0.0, 842.0, 430.0, 932.0)
... elevation: 8.0
... size: Size(430.0, 90.0)
... elevation: 8.0
... color: Color(0x00000000)
... shadowColor: Color(0x00000000)
... clipper: CircularNotchedAndCorneredRectangleClipper
RenderObject: RenderPhysicalShape#8ea2b relayoutBoundary=up2
parentData: (can use size)
constraints: BoxConstraints(w=430.0, 0.0<=h<=932.0)
semantics node: SemanticsNode#8
Rect.fromLTRB(0.0, 842.0, 430.0, 932.0)
elevation: 8.0
size: Size(430.0, 90.0)
elevation: 8.0
color: Color(0x00000000)
shadowColor: Color(0x00000000)
clipper: CircularNotchedAndCorneredRectangleClipper
... child: RenderCustomPaint#6be70 relayoutBoundary=up3 NEEDS-PAINT
... parentData: (can use size)
... constraints: BoxConstraints(w=430.0, 0.0<=h<=932.0)
... size: Size(430.0, 90.0)
... painter: _AroundCustomPainter#d9a2a()
... child: RenderClipPath#9db5c relayoutBoundary=up4 NEEDS-PAINT
... parentData: (can use size)
... constraints: BoxConstraints(w=430.0, 0.0<=h<=932.0)
... size: Size(430.0, 90.0)
... child: RenderPhysicalModel#b344c relayoutBoundary=up5 NEEDS-PAINT
... parentData: (can use size)
... constraints: BoxConstraints(w=430.0, 0.0<=h<=932.0)
... size: Size(430.0, 90.0)
... elevation: 0.0
... color: Color(0xffffffff)
... shadowColor: Color(0xffffffff)
... shape: BoxShape.rectangle
... borderRadius: BorderRadius.zero
... child: _RenderInkFeatures#960fc relayoutBoundary=up6 NEEDS-PAINT
... parentData: (can use size)
... constraints: BoxConstraints(w=430.0, 0.0<=h<=932.0)
... size: Size(430.0, 90.0)