terryworona
93 lines
1.8 KiB
Objective-C
93 lines
1.8 KiB
Objective-C
//
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// JBShapeLineLayer.m
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// JBChartViewDemo
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//
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// Created by Terry Worona on 12/25/15.
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// Copyright © 2015 Jawbone. All rights reserved.
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//
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#import "JBShapeLineLayer.h"
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// Numerics
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static CGFloat const kJBShapeLineLayerDefaultLinePhase = 1.0f;
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// Structures
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static NSArray *kJBShapeLineLayerDefaultDashPattern = nil;
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@implementation JBShapeLineLayer
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#pragma mark - Alloc/Init
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+ (void)initialize
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{
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if (self == [JBShapeLineLayer class])
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{
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kJBShapeLineLayerDefaultDashPattern = @[@(3), @(2)];
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}
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}
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- (instancetype)initWithTag:(NSUInteger)tag filled:(BOOL)filled smoothedLine:(BOOL)smoothedLine lineStyle:(JBLineChartViewLineStyle)lineStyle currentPath:(UIBezierPath *)currentPath
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{
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self = [super init];
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if (self)
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{
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_tag = tag;
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_filled = filled;
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_currentPath = [currentPath copy];
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// Position
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self.zPosition = filled ? 0.0f : 0.1f;
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self.fillColor = [UIColor clearColor].CGColor;
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// Style
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if (lineStyle == JBLineChartViewLineStyleSolid)
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{
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self.lineDashPhase = 0.0;
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self.lineDashPattern = nil;
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}
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else if (lineStyle == JBLineChartViewLineStyleDashed)
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{
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self.lineDashPhase = kJBShapeLineLayerDefaultLinePhase;
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self.lineDashPattern = kJBShapeLineLayerDefaultDashPattern;
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}
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// Smoothing
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if (smoothedLine)
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{
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if (filled)
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{
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self.lineCap = kCALineCapRound;
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self.lineJoin = kCALineJoinRound;
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}
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else
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{
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if (lineStyle == JBLineChartViewLineStyleDashed)
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{
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self.lineCap = kCALineCapButt; // smoothed, dashed lines need butt caps
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}
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else
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{
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self.lineCap = kCALineCapRound;
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}
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self.lineJoin = kCALineJoinRound;
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}
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}
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else
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{
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if (filled)
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{
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self.lineCap = kCALineCapButt;
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self.lineJoin = kCALineJoinMiter;
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}
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else
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{
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self.lineCap = kCALineCapButt;
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self.lineJoin = kCALineJoinMiter;
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}
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}
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}
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return self;
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}
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@end
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