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improved the view picker’s color range

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This commit is contained in:
Ryan Ackermann
2018-05-30 07:32:05 -05:00
parent 496bf8b638
commit 71c5c9d8e6
1 changed files with 5 additions and 9 deletions
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ColorPickerExample/RAScrollablePickerView.swift
+5 -9
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@@ -88,19 +88,15 @@ class RAScrollablePickerView: UIView {
private func colors(for value: CGFloat) -> [CGColor] {
var result = [CGColor]()
var colors = [CGFloat]()
var padding: CGFloat = 0.0
if type != .hue {
padding = 0.7
}
else {
padding = 0.135
}
let padding: CGFloat = type == .hue ? 0.04 : 0.5
colors.append(value - (padding * 2))
colors.append(value - padding)
colors.append(value)
colors.append(value + padding)
colors.append(value + (padding * 2))
for index in 0..<colors.count {
let color = colors[index]
var colorValue: CGFloat
@@ -188,7 +184,7 @@ class RAScrollablePickerView: UIView {
override func draw(_ rect: CGRect) {
let ctx = UIGraphicsGetCurrentContext()
if let gradient = CGGradient(colorsSpace: CGColorSpaceCreateDeviceRGB(), colors: colors(for: value) as CFArray, locations: [0, 0.5, 1]) {
if let gradient = CGGradient(colorsSpace: CGColorSpaceCreateDeviceRGB(), colors: colors(for: value) as CFArray, locations: [0, 0.25, 0.5, 0.75, 1]) {
ctx?.drawLinearGradient(gradient, start: CGPoint(x: rect.size.width, y: 0), end: CGPoint.zero, options: .drawsBeforeStartLocation)
}