From fce2702c50741068f8f25c3ec35e50500423ede2 Mon Sep 17 00:00:00 2001
From: Ilya Laktyushin <ilya@laktyush.in>
Date: Mon, 23 Mar 2020 22:19:10 +0400
Subject: [PATCH] Fix chart line rendering

---
 .../Stacked Bars/TwoAxisStepBarsChartController.swift        | 1 -
 .../Sources/Charts/Renderes/LinesChartRenderer.swift         | 5 +++--
 .../GraphCore/Sources/Charts/Renderes/PieChartRenderer.swift | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/submodules/GraphCore/Sources/Charts/Controllers/Stacked Bars/TwoAxisStepBarsChartController.swift b/submodules/GraphCore/Sources/Charts/Controllers/Stacked Bars/TwoAxisStepBarsChartController.swift
index 83807f7af9..8a7bf111b0 100644
--- a/submodules/GraphCore/Sources/Charts/Controllers/Stacked Bars/TwoAxisStepBarsChartController.swift	
+++ b/submodules/GraphCore/Sources/Charts/Controllers/Stacked Bars/TwoAxisStepBarsChartController.swift	
@@ -89,7 +89,6 @@ public class TwoAxisStepBarsChartController: BaseLinesChartController {
             } else {
                 controller.mainBarsRenderer.bars = BarChartRenderer.BarsData(barWidth: 0.0, locations: [], components: [])
                 controller.previewBarsRenderer.bars = BarChartRenderer.BarsData(barWidth: 0.0, locations: [], components: [])
-                controller.verticalScalesRenderer.setHorizontalLinesVisible(false, animated: animated)
             }
         }
         
diff --git a/submodules/GraphCore/Sources/Charts/Renderes/LinesChartRenderer.swift b/submodules/GraphCore/Sources/Charts/Renderes/LinesChartRenderer.swift
index 1086140be4..efa8f1407d 100644
--- a/submodules/GraphCore/Sources/Charts/Renderes/LinesChartRenderer.swift
+++ b/submodules/GraphCore/Sources/Charts/Renderes/LinesChartRenderer.swift
@@ -68,6 +68,7 @@ class LinesChartRenderer: BaseChartRenderer {
             context.setAlpha(alpha)
             context.setStrokeColor(toLine.color.cgColor)
             context.setLineWidth(lineWidth)
+            context.setLineCap(.round)
             
             if linesShapeAnimator.isAnimating {
                 let animationOffset = linesShapeAnimator.current
@@ -314,8 +315,9 @@ class LinesChartRenderer: BaseChartRenderer {
                     lines.removeLast()
                 }
                 
-                context.setLineCap(.round)
+                context.beginTransparencyLayer(auxiliaryInfo: nil)
                 context.strokeLineSegments(between: lines)
+                context.endTransparencyLayer()
             } else {                
                 if var index = toLine.points.firstIndex(where: { $0.x >= range.lowerBound }) {
                     var lines: [CGPoint] = []
@@ -431,7 +433,6 @@ class LinesChartRenderer: BaseChartRenderer {
                         lines.removeLast()
                     }
                     
-                    context.setLineCap(.round)
                     context.strokeLineSegments(between: lines)
                 }
             }
diff --git a/submodules/GraphCore/Sources/Charts/Renderes/PieChartRenderer.swift b/submodules/GraphCore/Sources/Charts/Renderes/PieChartRenderer.swift
index d0e06ed2ff..6eb6e5c2f1 100644
--- a/submodules/GraphCore/Sources/Charts/Renderes/PieChartRenderer.swift
+++ b/submodules/GraphCore/Sources/Charts/Renderes/PieChartRenderer.swift
@@ -138,7 +138,7 @@ class PieChartRenderer: BaseChartRenderer {
         let maximumFontSize: CGFloat = radius / 7
         let minimumFontSize: CGFloat = 4
         let centerOffsetStartAngle = CGFloat.pi / 4
-        let minimumValueToDraw: CGFloat = 0.01
+        let minimumValueToDraw: CGFloat = 1.01
         let diagramRadius = radius - animationSelectionOffset
 
         let numberOfVisibleItems = currentlyVisibleData.filter { $0.value > 0 }.count