macos-stats/ModuleKit/Widgets/Battery.swift

//
//  Battery.swift
//  ModuleKit
//
//  Created by Serhiy Mytrovtsiy on 06/06/2020.
//  Using Swift 5.0.
//  Running on macOS 10.15.
//
//  Copyright © 2020 Serhiy Mytrovtsiy. All rights reserved.
//

import Cocoa
import StatsKit

public enum battery_additional_t: String {
    case none = "None"
    case separator_1 = "separator_1"
    case percentage = "Percentage"
    case time = "Time"
}
extension battery_additional_t: CaseIterable {}

public class BatterykWidget: Widget {
    private var additional: battery_additional_t = .none
    private var iconState: Bool = true
    private var colorState: Bool = false
    
    private let store: UnsafePointer<Store>?
    
    private var percentage: Double = 1
    private var time: Int = 0
    private var charging: Bool = false
    private var ACStatus: Bool = false
    
    public init(preview: Bool, title: String, config: NSDictionary?, store: UnsafePointer<Store>?) {
        let widgetTitle: String = title
        self.store = store
        super.init(frame: CGRect(x: 0, y: Constants.Widget.margin, width: 30, height: Constants.Widget.height - (2*Constants.Widget.margin)))
        self.title = widgetTitle
        self.type = .battery
        self.preview = preview
        self.canDrawConcurrently = true
        
        if self.store != nil {
            self.additional = battery_additional_t(rawValue: store!.pointee.string(key: "\(self.title)_\(self.type.rawValue)_additional", defaultValue: self.additional.rawValue)) ?? self.additional
            self.iconState = store!.pointee.bool(key: "\(self.title)_\(self.type.rawValue)_icon", defaultValue: self.iconState)
            self.colorState = store!.pointee.bool(key: "\(self.title)_\(self.type.rawValue)_color", defaultValue: self.colorState)
        }
        
        if self.preview {
            self.percentage = 0.72
            self.additional = .none
            self.iconState = true
            self.colorState = false
        }
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    public override func draw(_ dirtyRect: NSRect) {
        super.draw(dirtyRect)
        
        var width: CGFloat = 30
        var x: CGFloat = Constants.Widget.margin+1
        
        let stringAttributes = [
            NSAttributedString.Key.font: NSFont.systemFont(ofSize: 12, weight: .regular),
            NSAttributedString.Key.foregroundColor: isDarkMode ? NSColor.white : NSColor.textColor,
            NSAttributedString.Key.paragraphStyle: NSMutableParagraphStyle()
        ]
        
        if self.additional == .percentage {
            let string = "\(Int((self.percentage.rounded(toPlaces: 2)) * 100))%"
            let stringWidth = string.widthOfString(usingFont: .systemFont(ofSize: 12, weight: .regular))
            let rect = CGRect(x: x, y: (Constants.Widget.height-12)/2, width: stringWidth, height: 12)
            let str = NSAttributedString.init(string: string, attributes: stringAttributes)
            str.draw(with: rect)
            
            width += stringWidth + Constants.Widget.margin
            x += stringWidth + Constants.Widget.margin
        } else if self.additional == .time {
            let string = Double(self.time*60).printSecondsToHoursMinutesSeconds()
            let stringWidth = string.widthOfString(usingFont: .systemFont(ofSize: 12, weight: .regular))
            let rect = CGRect(x: x, y: (Constants.Widget.height-12)/2, width: stringWidth, height: 12)
            let str = NSAttributedString.init(string: string, attributes: stringAttributes)
            str.draw(with: rect)
            
            width += stringWidth + Constants.Widget.margin
            x += stringWidth + Constants.Widget.margin
        }
        
        let w: CGFloat = 28 - (Constants.Widget.margin*2) - 4
        let h: CGFloat = 11
        let y: CGFloat = (dirtyRect.size.height - h) / 2
        let batteryFrame = NSBezierPath(roundedRect: NSRect(x: x+1, y: y, width: w, height: h), xRadius: 1.5, yRadius: 1.5)
        
        let bPX: CGFloat = x+w+1
        let bPY: CGFloat = (dirtyRect.size.height / 2) - 2
        let batteryPoint = NSBezierPath(roundedRect: NSRect(x: bPX, y: bPY, width: 2, height: 4), xRadius: 1, yRadius: 1)
        NSColor.textColor.set()
        batteryPoint.lineWidth = 1.1
        batteryPoint.stroke()
        batteryPoint.fill()
        
        batteryFrame.lineWidth = 1
        batteryFrame.stroke()

        if !self.charging || !self.ACStatus {
            let maxWidth = w - 3
            let innerWidth: CGFloat = self.ACStatus ? maxWidth : maxWidth * CGFloat(self.percentage)
            let inner = NSBezierPath(roundedRect: NSRect(x: x+2.5, y: y+1.5, width: innerWidth, height: h-3), xRadius: 0.5, yRadius: 0.5)
            self.percentage.batteryColor(color: self.colorState).set()
            inner.lineWidth = 0
            inner.stroke()
            inner.close()
            inner.fill()
        } else if self.charging {
            let maxHeight = h - 3
            let height: CGFloat = maxHeight * CGFloat(self.percentage)
            let inner = NSBezierPath(roundedRect: NSRect(x: x+2.5, y: y+1.5, width: w-3, height: height), xRadius: 0.5, yRadius: 0.5)
            (self.percentage == 1 ? NSColor.textColor : NSColor.systemGreen).set()
            inner.lineWidth = 0
            inner.stroke()
            inner.close()
            inner.fill()
        }
        
        if self.ACStatus {
            let batteryCenter: CGPoint = CGPoint(x: x+1+(w/2), y: y+(h/2))
            let boltSize: CGSize = CGSize(width: 8, height: h+3+4)
            
            let minX = batteryCenter.x - (boltSize.width/2)
            let maxX = batteryCenter.x + (boltSize.width/2)
            let minY = batteryCenter.y - (boltSize.height/2)
            let maxY = batteryCenter.y + (boltSize.height/2)
            
            let points: [CGPoint] = [
                CGPoint(x: batteryCenter.x-2, y: minY),
                CGPoint(x: maxX, y: batteryCenter.y+1.5),
                CGPoint(x: batteryCenter.x+1, y: batteryCenter.y+1.5),
                CGPoint(x: batteryCenter.x+2, y: maxY),
                CGPoint(x: minX, y: batteryCenter.y-1.5),
                CGPoint(x: batteryCenter.x-1, y: batteryCenter.y-1.5),
            ]
            
            let linePath = NSBezierPath()
            linePath.move(to: CGPoint(x: points[0].x, y: points[0].y))
            for i in 1..<points.count {
                linePath.line(to: CGPoint(x: points[i].x, y: points[i].y))
            }
            linePath.line(to: CGPoint(x: points[0].x, y: points[0].y))
            
            NSColor.textColor.set()
            linePath.fill()
            
            let ctx = NSGraphicsContext.current!.cgContext
            ctx.saveGState()
            ctx.setBlendMode(.destinationOut)
            
            NSColor.orange.set()
            linePath.lineWidth = 1
            linePath.stroke()
            
            ctx.restoreGState()
        }
        
        self.setWidth(width)
    }
    
    public func setValue(percentage: Double, ACStatus: Bool, isCharging: Bool, time: Int) {
        var updated: Bool = false
        
        if self.percentage != percentage {
            self.percentage = percentage
            updated = true
        }
        if self.ACStatus != ACStatus {
            self.ACStatus = ACStatus
            updated = true
        }
        if self.charging != isCharging {
            self.charging = isCharging
            updated = true
        }
        if self.time != time {
            self.time = time
            updated = true
        }
        
        if updated {
            DispatchQueue.main.async(execute: {
                self.display()
            })
        }
    }
    
    public override func settings(superview: NSView) {
        let rowHeight: CGFloat = 30
        let height: CGFloat = ((rowHeight + Constants.Settings.margin) * 2) + Constants.Settings.margin
        superview.setFrameSize(NSSize(width: superview.frame.width, height: height))
        
        let view: NSView = NSView(frame: NSRect(x: Constants.Settings.margin, y: Constants.Settings.margin, width: superview.frame.width - (Constants.Settings.margin*2), height: superview.frame.height - (Constants.Settings.margin*2)))
        
        view.addSubview(SelectTitleRow(
            frame: NSRect(x: 0, y: rowHeight + Constants.Settings.margin, width: view.frame.width, height: rowHeight),
            title: LocalizedString("Additional information"),
            action: #selector(toggleAdditional),
            items: battery_additional_t.allCases.map{ return $0.rawValue },
            selected: self.additional.rawValue
        ))
        
        view.addSubview(ToggleTitleRow(
            frame: NSRect(x: 0, y: (rowHeight + Constants.Settings.margin) * 0, width: view.frame.width, height: rowHeight),
            title: LocalizedString("Colorize"),
            action: #selector(toggleColor),
            state: self.colorState
        ))
        
        superview.addSubview(view)
    }
    
    @objc private func toggleAdditional(_ sender: NSMenuItem) {
        let newValue: battery_additional_t = battery_additional_t(rawValue: sender.title) ?? .none
        self.additional = newValue
        self.store?.pointee.set(key: "\(self.title)_\(self.type.rawValue)_additional", value: self.additional.rawValue)
        self.display()
    }
    
    @objc private func toggleColor(_ sender: NSControl) {
        var state: NSControl.StateValue? = nil
        if #available(OSX 10.15, *) {
            state = sender is NSSwitch ? (sender as! NSSwitch).state: nil
        } else {
            state = sender is NSButton ? (sender as! NSButton).state: nil
        }
        self.colorState = state! == .on ? true : false
        self.store?.pointee.set(key: "\(self.title)_\(self.type.rawValue)_color", value: self.colorState)
        self.display()
    }
}