mirror of
https://github.com/joncardasis/ChromaColorPicker.git
synced 2024-09-11 06:35:41 +03:00
Added brightness slider and slider handle views. Created gradient backed slider track view. Refactored shadow stylings.
This commit is contained in:
parent
927a4d8834
commit
1a1179fbe6
@ -18,6 +18,10 @@
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FC1BD8C02207D7B700817AF3 /* ChromaColorPickerTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = FC1BD8BF2207D7B700817AF3 /* ChromaColorPickerTests.swift */; };
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FC1BD8C22207D7B700817AF3 /* ChromaColorPicker.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 3503B82F1F2689BC00750356 /* ChromaColorPicker.framework */; };
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FC4387C422603AE900F739F1 /* ColorWheelViewTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = FCCA42AB226038A400BE2FF9 /* ColorWheelViewTests.swift */; };
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FC4387C62262556600F739F1 /* BrightnessSlider.swift in Sources */ = {isa = PBXBuildFile; fileRef = FC4387C52262556600F739F1 /* BrightnessSlider.swift */; };
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FC4387C922625C7000F739F1 /* SliderTrackView.swift in Sources */ = {isa = PBXBuildFile; fileRef = FC4387C822625C7000F739F1 /* SliderTrackView.swift */; };
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FC4387CB22625DA800F739F1 /* SliderHandleView.swift in Sources */ = {isa = PBXBuildFile; fileRef = FC4387CA22625DA800F739F1 /* SliderHandleView.swift */; };
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FC4387CD2262B82600F739F1 /* ChromaControlStylable.swift in Sources */ = {isa = PBXBuildFile; fileRef = FC4387CC2262B82600F739F1 /* ChromaControlStylable.swift */; };
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FCCA42A5226022A800BE2FF9 /* ColorWheelView.swift in Sources */ = {isa = PBXBuildFile; fileRef = FCCA42A4226022A800BE2FF9 /* ColorWheelView.swift */; };
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FCCA42A7226023F000BE2FF9 /* ChromaColorHandle.swift in Sources */ = {isa = PBXBuildFile; fileRef = FCCA42A6226023F000BE2FF9 /* ChromaColorHandle.swift */; };
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FCCA42AA2260329900BE2FF9 /* UIKit+DropShadow.swift in Sources */ = {isa = PBXBuildFile; fileRef = FCCA42A92260329900BE2FF9 /* UIKit+DropShadow.swift */; };
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@ -75,6 +79,10 @@
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FC1BD8CB2207FCE100817AF3 /* UIColor+Utilities.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "UIColor+Utilities.swift"; sourceTree = "<group>"; };
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FC1BD8CC2207FCE100817AF3 /* ChromaAddButton.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ChromaAddButton.swift; sourceTree = "<group>"; };
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FC1BD8CD2207FCE100817AF3 /* ColorModeToggleButton.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ColorModeToggleButton.swift; sourceTree = "<group>"; };
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FC4387C52262556600F739F1 /* BrightnessSlider.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BrightnessSlider.swift; sourceTree = "<group>"; };
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FC4387C822625C7000F739F1 /* SliderTrackView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SliderTrackView.swift; sourceTree = "<group>"; };
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FC4387CA22625DA800F739F1 /* SliderHandleView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SliderHandleView.swift; sourceTree = "<group>"; };
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FC4387CC2262B82600F739F1 /* ChromaControlStylable.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ChromaControlStylable.swift; sourceTree = "<group>"; };
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FCCA42A4226022A800BE2FF9 /* ColorWheelView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ColorWheelView.swift; sourceTree = "<group>"; };
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FCCA42A6226023F000BE2FF9 /* ChromaColorHandle.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ChromaColorHandle.swift; sourceTree = "<group>"; };
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FCCA42A92260329900BE2FF9 /* UIKit+DropShadow.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "UIKit+DropShadow.swift"; sourceTree = "<group>"; };
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@ -112,6 +120,7 @@
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3503B8301F2689BC00750356 /* Source */ = {
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isa = PBXGroup;
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children = (
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FC4387C722625C5F00F739F1 /* Helpers */,
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FCCA42A82260325F00BE2FF9 /* Extensions */,
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FCCA427822601F8800BE2FF9 /* Legacy */,
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3503B8311F2689BC00750356 /* ChromaColorPicker.h */,
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@ -119,6 +128,8 @@
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FCEA4E262235AAA200C0A1B6 /* ChromaColorPicker.swift */,
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FCCA42A6226023F000BE2FF9 /* ChromaColorHandle.swift */,
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FCCA42A4226022A800BE2FF9 /* ColorWheelView.swift */,
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FC4387C52262556600F739F1 /* BrightnessSlider.swift */,
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FC4387CC2262B82600F739F1 /* ChromaControlStylable.swift */,
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);
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path = Source;
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sourceTree = "<group>";
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@ -167,6 +178,15 @@
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path = Tests;
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sourceTree = "<group>";
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};
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FC4387C722625C5F00F739F1 /* Helpers */ = {
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isa = PBXGroup;
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children = (
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FC4387C822625C7000F739F1 /* SliderTrackView.swift */,
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FC4387CA22625DA800F739F1 /* SliderHandleView.swift */,
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);
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path = Helpers;
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sourceTree = "<group>";
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};
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FCCA427822601F8800BE2FF9 /* Legacy */ = {
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isa = PBXGroup;
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children = (
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@ -344,9 +364,13 @@
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buildActionMask = 2147483647;
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files = (
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FCEA4E272235AAA200C0A1B6 /* ChromaColorPicker.swift in Sources */,
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FC4387CD2262B82600F739F1 /* ChromaControlStylable.swift in Sources */,
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FCCA42AA2260329900BE2FF9 /* UIKit+DropShadow.swift in Sources */,
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FC4387C62262556600F739F1 /* BrightnessSlider.swift in Sources */,
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FCCA42A7226023F000BE2FF9 /* ChromaColorHandle.swift in Sources */,
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FCCA42A5226022A800BE2FF9 /* ColorWheelView.swift in Sources */,
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FC4387C922625C7000F739F1 /* SliderTrackView.swift in Sources */,
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FC4387CB22625DA800F739F1 /* SliderHandleView.swift in Sources */,
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);
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runOnlyForDeploymentPostprocessing = 0;
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};
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@ -13,11 +13,16 @@ class ViewController: UIViewController {
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@IBOutlet weak var colorDisplayView: UIView!
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let colorPicker = ChromaColorPicker()
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let temp = BrightnessSlider()
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override func viewDidLoad() {
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super.viewDidLoad()
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temp.frame = CGRect(x: 30, y: 70, width: 320, height: 32)
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view.addSubview(temp)
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colorPicker.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(colorPicker)
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166
Source/BrightnessSlider.swift
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166
Source/BrightnessSlider.swift
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@ -0,0 +1,166 @@
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//
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// BrightnessSlider.swift
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// ChromaColorPicker
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//
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// Created by Jon Cardasis on 4/13/19.
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// Copyright © 2019 Jonathan Cardasis. All rights reserved.
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//
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import UIKit
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public class BrightnessSlider: UIControl, ChromaControlStylable {
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/// The value of the slider between [0.0, 1.0].
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public var currentValue: CGFloat = 0.0 {
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didSet { updateControl(to: currentValue) }
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}
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/// The value of the color the handle is currently displaying.
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public var currentColor: UIColor {
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return sliderHandleView.handleColor
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}
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public var borderWidth: CGFloat = 4.0 {
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didSet { setNeedsLayout() }
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}
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public var borderColor: UIColor = .white {
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didSet { setNeedsLayout() }
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}
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public var showsShadow: Bool = true {
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didSet { setNeedsLayout() }
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}
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//MARK: - Initialization
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public override init(frame: CGRect) {
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super.init(frame: frame)
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commonInit()
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}
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public required init?(coder aDecoder: NSCoder) {
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super.init(coder: aDecoder)
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commonInit()
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}
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public override func layoutSubviews() {
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super.layoutSubviews()
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sliderTrackView.layer.cornerRadius = sliderTrackView.bounds.height / 2.0
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sliderTrackView.layer.borderColor = borderColor.cgColor
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sliderTrackView.layer.borderWidth = borderWidth
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moveHandle(to: currentValue)
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updateShadowIfNeeded()
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}
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/// Sets the tracking color of the slider and updates the gradient view.
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public func updateTrackingColor(to color: UIColor, value: CGFloat) {
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updateTrackViewGradient(for: color)
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currentValue = value
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}
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// MARK: - Control
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public override func beginTracking(_ touch: UITouch, with event: UIEvent?) -> Bool {
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let location = touch.location(in: self)
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return confiningTrackFrame.contains(location) || sliderHandleView.frame.contains(location)
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}
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public override func continueTracking(_ touch: UITouch, with event: UIEvent?) -> Bool {
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let location = touch.location(in: self)
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let clampedPositionX: CGFloat = max(0, min(location.x, confiningTrackFrame.width))
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let value = clampedPositionX / confiningTrackFrame.width
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updateControl(to: value)
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sendActions(for: .valueChanged)
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return true
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}
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public override func endTracking(_ touch: UITouch?, with event: UIEvent?) {
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sendActions(for: .editingDidEnd)
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}
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// MARK: - Private
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internal let sliderTrackView = SliderTrackView()
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internal let sliderHandleView = SliderHandleView()
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/// The amount of padding caused by visual stylings
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internal var horizontalPadding: CGFloat {
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return sliderTrackView.layer.cornerRadius / 2.0
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}
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internal var confiningTrackFrame: CGRect {
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return sliderTrackView.frame.insetBy(dx: horizontalPadding, dy: 0)
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}
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internal func commonInit() {
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backgroundColor = .clear
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setupSliderTrackView()
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setupSliderHandleView()
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updateControl(to: currentValue)
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}
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internal func setupSliderTrackView() {
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sliderTrackView.isUserInteractionEnabled = false
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sliderTrackView.translatesAutoresizingMaskIntoConstraints = false
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addSubview(sliderTrackView)
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NSLayoutConstraint.activate([
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sliderTrackView.leadingAnchor.constraint(equalTo: leadingAnchor),
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sliderTrackView.trailingAnchor.constraint(equalTo: trailingAnchor),
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sliderTrackView.heightAnchor.constraint(equalTo: heightAnchor, multiplier: 0.75),
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sliderTrackView.centerYAnchor.constraint(equalTo: centerYAnchor),
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])
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}
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internal func setupSliderHandleView() {
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sliderHandleView.isUserInteractionEnabled = false
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addSubview(sliderHandleView)
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}
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internal func updateShadowIfNeeded() {
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let views = [sliderHandleView, sliderTrackView]
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if showsShadow {
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let shadowProps = shadowProperties(forHeight: bounds.height)
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views.forEach { $0.applyDropShadow(shadowProps) }
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} else {
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views.forEach { $0.removeDropShadow() }
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}
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}
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// internal func updateControl(to color: UIColor) {
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// updateTrackViewGradient(for: color)
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// }
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internal func updateControl(to value: CGFloat) {
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let brightness = 1 - max(0, min(1, value))
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var hue: CGFloat = 0
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var saturation: CGFloat = 0
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currentColor.getHue(&hue, saturation: &saturation, brightness: nil, alpha: nil)
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let newColor = UIColor(hue: hue, saturation: saturation, brightness: brightness, alpha: 1.0)
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CATransaction.begin()
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CATransaction.setDisableActions(true)
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sliderHandleView.handleColor = newColor
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CATransaction.commit()
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moveHandle(to: value)
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}
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internal func updateTrackViewGradient(for color: UIColor) {
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sliderTrackView.gradientValues = (color, .black)
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}
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internal func moveHandle(to value: CGFloat) {
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let clampedValue = max(0, min(1, value))
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let xPos = (clampedValue * confiningTrackFrame.width) + horizontalPadding
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let size = CGSize(width: bounds.height * 1.15, height: bounds.height)
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sliderHandleView.frame = CGRect(origin: CGPoint(x: xPos - (size.width / 2), y: 0), size: size)
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}
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}
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@ -17,7 +17,7 @@ public protocol ChromaColorPickerDelegate {
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@IBDesignable
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public class ChromaColorPicker: UIControl {
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public class ChromaColorPicker: UIControl, ChromaControlStylable {
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@IBInspectable public var borderWidth: CGFloat = 8.0 {
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didSet { setNeedsLayout() }
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@ -27,6 +27,10 @@ public class ChromaColorPicker: UIControl {
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didSet { setNeedsLayout() }
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}
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@IBInspectable public var showsBrightnessSlider: Bool = false {
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didSet { /* todo */ }
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}
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@IBInspectable public var showsShadow: Bool = true {
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didSet { setNeedsLayout() }
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}
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@ -76,10 +80,9 @@ public class ChromaColorPicker: UIControl {
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])
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}
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internal func updateShadowIfNeeded() {
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func updateShadowIfNeeded() {
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if showsShadow {
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let dropShadowHeight = bounds.height * 0.01
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applyDropShadow(color: UIColor.black, opacity: 0.2, offset: CGSize(width: 0, height: dropShadowHeight), radius: 2)
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applyDropShadow(shadowProperties(forHeight: bounds.height))
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} else {
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removeDropShadow()
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}
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25
Source/ChromaControlStylable.swift
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25
Source/ChromaControlStylable.swift
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@ -0,0 +1,25 @@
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//
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// ChromaControlStylable.swift
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// ChromaColorPicker
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//
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// Created by Jon Cardasis on 4/13/19.
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// Copyright © 2019 Jonathan Cardasis. All rights reserved.
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//
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import UIKit
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internal protocol ChromaControlStylable {
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var borderWidth: CGFloat { get set }
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var borderColor: UIColor { get set }
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var showsShadow: Bool { get set }
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func updateShadowIfNeeded()
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}
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internal extension ChromaControlStylable where Self: UIView {
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func shadowProperties(forHeight height: CGFloat) -> ShadowProperties {
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let dropShadowHeight = height * 0.01
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return ShadowProperties(color: UIColor.black.cgColor, opacity: 0.35, offset: CGSize(width: 0, height: dropShadowHeight), radius: 4)
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}
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}
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@ -56,11 +56,7 @@ public class ColorWheelView: UIView {
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the point does not exist within the bounds of the color wheel.
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*/
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public func pixelColor(at point: CGPoint) -> UIColor? {
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guard bounds.offsetBy(dx: 1, dy: 1).contains(point) else { return nil }
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let distanceFromCenter: CGFloat = hypot(center.x - point.x, center.y - point.y)
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let pointExistsInRadius: Bool = distanceFromCenter <= radius
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guard pointExistsInRadius else { return nil }
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guard pointIsInColorWheel(point) else { return nil }
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let pixel = UnsafeMutablePointer<CUnsignedChar>.allocate(capacity: 4)
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let colorSpace = CGColorSpaceCreateDeviceRGB()
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@ -127,4 +123,12 @@ public class ColorWheelView: UIView {
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])
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return filter?.outputImage
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}
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internal func pointIsInColorWheel(_ point: CGPoint) -> Bool {
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guard bounds.offsetBy(dx: 1, dy: 1).contains(point) else { return false }
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let distanceFromCenter: CGFloat = hypot(center.x - point.x, center.y - point.y)
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let pointExistsInRadius: Bool = distanceFromCenter <= (radius - layer.borderWidth)
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return pointExistsInRadius
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}
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}
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75
Source/Helpers/SliderHandleView.swift
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75
Source/Helpers/SliderHandleView.swift
Normal file
@ -0,0 +1,75 @@
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//
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// SliderHandleView.swift
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// ChromaColorPicker
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//
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// Created by Jon Cardasis on 4/13/19.
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// Copyright © 2019 Jonathan Cardasis. All rights reserved.
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//
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import UIKit
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internal class SliderHandleView: UIView {
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var handleColor: UIColor = .black {
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didSet { updateHandleColor(to: handleColor) }
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}
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var borderWidth: CGFloat = 3.0 {
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didSet { setNeedsLayout() }
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}
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var borderColor: UIColor = .white {
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didSet { setNeedsLayout() }
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}
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override init(frame: CGRect) {
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super.init(frame: frame)
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commonInit()
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}
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required init?(coder aDecoder: NSCoder) {
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super.init(coder: aDecoder)
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commonInit()
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}
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override func layoutSubviews() {
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let radius: CGFloat = bounds.height / 10
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handleLayer.path = makeRoundedTrianglePath(width: bounds.width, height: bounds.height, radius: radius)
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handleLayer.strokeColor = borderColor.cgColor
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handleLayer.lineWidth = borderWidth
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handleLayer.position = CGPoint(x: bounds.width / 2, y: (bounds.height / 2.0) - (radius / 4.0))
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}
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// MARK: - Private
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let handleLayer = CAShapeLayer()
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private struct CornerPoint {
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let center: CGPoint
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let startAngle: CGFloat
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let endAngle: CGFloat
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}
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private func commonInit() {
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layer.addSublayer(handleLayer)
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updateHandleColor(to: handleColor)
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}
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private func updateHandleColor(to color: UIColor) {
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handleLayer.fillColor = color.cgColor
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}
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private func makeRoundedTrianglePath(width: CGFloat, height: CGFloat, radius: CGFloat) -> CGPath {
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||||
let point1 = CGPoint(x: -width / 2, y: height / 2)
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||||
let point2 = CGPoint(x: 0, y: -height / 2)
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||||
let point3 = CGPoint(x: width / 2, y: height / 2)
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||||
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||||
let path = CGMutablePath()
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||||
path.move(to: CGPoint(x: 0, y: height / 2))
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path.addArc(tangent1End: point1, tangent2End: point2, radius: radius)
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||||
path.addArc(tangent1End: point2, tangent2End: point3, radius: radius)
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path.addArc(tangent1End: point3, tangent2End: point1, radius: radius)
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path.closeSubpath()
|
||||
|
||||
return path
|
||||
}
|
||||
}
|
49
Source/Helpers/SliderTrackView.swift
Normal file
49
Source/Helpers/SliderTrackView.swift
Normal file
@ -0,0 +1,49 @@
|
||||
//
|
||||
// SliderTrackView.swift
|
||||
// ChromaColorPicker
|
||||
//
|
||||
// Created by Jon Cardasis on 4/13/19.
|
||||
// Copyright © 2019 Jonathan Cardasis. All rights reserved.
|
||||
//
|
||||
|
||||
import UIKit
|
||||
|
||||
internal class SliderTrackView: UIView {
|
||||
typealias GradientValues = (start: UIColor, end: UIColor)
|
||||
|
||||
var gradientValues: GradientValues = (.white, .black) {
|
||||
didSet { updateGradient(for: gradientValues) }
|
||||
}
|
||||
|
||||
override init(frame: CGRect) {
|
||||
super.init(frame: frame)
|
||||
commonInit()
|
||||
}
|
||||
|
||||
required init?(coder aDecoder: NSCoder) {
|
||||
super.init(coder: aDecoder)
|
||||
commonInit()
|
||||
}
|
||||
|
||||
override func layoutSubviews() {
|
||||
super.layoutSubviews()
|
||||
gradient.frame = layer.bounds
|
||||
gradient.cornerRadius = layer.cornerRadius
|
||||
}
|
||||
|
||||
func updateGradient(for values: GradientValues) {
|
||||
gradient.colors = [values.start.cgColor, values.end.cgColor]
|
||||
}
|
||||
|
||||
// MARK: - Private
|
||||
private let gradient = CAGradientLayer()
|
||||
|
||||
private func commonInit() {
|
||||
gradient.masksToBounds = true
|
||||
gradient.actions = ["position" : NSNull(), "bounds" : NSNull(), "path" : NSNull()]
|
||||
gradient.startPoint = CGPoint(x: 0, y: 0.5)
|
||||
gradient.endPoint = CGPoint(x: 1, y: 0.5)
|
||||
updateGradient(for: gradientValues)
|
||||
layer.addSublayer(gradient)
|
||||
}
|
||||
}
|
@ -84,6 +84,18 @@ class ColorWheelViewTests: XCTestCase {
|
||||
XCTAssertNil(subject.pixelColor(at: testPoint))
|
||||
}
|
||||
|
||||
func testPixelColorShouldReturnNilForPointOnBorder() {
|
||||
// Given
|
||||
subject.layer.borderWidth = 20
|
||||
subject.layer.borderColor = UIColor.white.cgColor
|
||||
|
||||
// When
|
||||
let testPoint = CGPoint(x: subject.bounds.width - 10, y: subject.frame.midY)
|
||||
|
||||
// Then
|
||||
XCTAssertNil(subject.pixelColor(at: testPoint))
|
||||
}
|
||||
|
||||
func testPixelColorShouldBeRedAtMaxXMidY() {
|
||||
// Given, When
|
||||
let size = subject.frame.size
|
||||
|
Loading…
Reference in New Issue
Block a user