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https://github.com/TomHarte/CLK.git
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218 lines
6.7 KiB
Swift
218 lines
6.7 KiB
Swift
//
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// MachineDocument.swift
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// Clock Signal
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//
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// Created by Thomas Harte on 04/01/2016.
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// Copyright © 2016 Thomas Harte. All rights reserved.
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//
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import Cocoa
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import AudioToolbox
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class MachineDocument:
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NSDocument,
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NSWindowDelegate,
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CSMachineDelegate,
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CSOpenGLViewDelegate,
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CSOpenGLViewResponderDelegate,
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CSBestEffortUpdaterDelegate,
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CSAudioQueueDelegate
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{
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lazy var actionLock = NSLock()
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lazy var drawLock = NSLock()
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var machine: CSMachine!
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var name: String! {
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get {
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return nil
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}
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}
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func aspectRatio() -> NSSize {
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return NSSize(width: 4.0, height: 3.0)
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}
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@IBOutlet weak var openGLView: CSOpenGLView!
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@IBOutlet var optionsPanel: MachinePanel!
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@IBAction func showOptions(_ sender: AnyObject!) {
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optionsPanel?.setIsVisible(true)
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}
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fileprivate var audioQueue: CSAudioQueue! = nil
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fileprivate var bestEffortUpdater: CSBestEffortUpdater!
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override var windowNibName: String? {
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return "MachineDocument"
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}
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override func windowControllerDidLoadNib(_ aController: NSWindowController) {
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super.windowControllerDidLoadNib(aController)
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// establish the output aspect ratio and audio
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let displayAspectRatio = self.aspectRatio()
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aController.window?.contentAspectRatio = displayAspectRatio
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openGLView.perform(glContext: {
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self.machine.setView(self.openGLView, aspectRatio: Float(displayAspectRatio.width / displayAspectRatio.height))
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})
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self.machine.delegate = self
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self.bestEffortUpdater = CSBestEffortUpdater()
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// callbacks from the OpenGL may come on a different thread, immediately following the .delegate set;
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// hence the full setup of the best-effort updater prior to setting self as a delegate
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self.openGLView.delegate = self
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self.openGLView.responderDelegate = self
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setupClockRate()
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self.optionsPanel?.establishStoredOptions()
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// bring OpenGL view-holding window on top of the options panel
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self.openGLView.window!.makeKeyAndOrderFront(self)
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// start accepting best effort updates
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self.bestEffortUpdater.delegate = self
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}
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func machineDidChangeClockRate(_ machine: CSMachine!) {
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setupClockRate()
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}
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func machineDidChangeClockIsUnlimited(_ machine: CSMachine!) {
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self.bestEffortUpdater.runAsUnlimited = machine.clockIsUnlimited
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}
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fileprivate func setupClockRate() {
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// establish and provide the audio queue, taking advice as to an appropriate sampling rate
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let maximumSamplingRate = CSAudioQueue.preferredSamplingRate()
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let selectedSamplingRate = self.machine.idealSamplingRate(from: NSRange(location: 0, length: NSInteger(maximumSamplingRate)))
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if selectedSamplingRate > 0 {
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audioQueue = CSAudioQueue(samplingRate: Float64(selectedSamplingRate))
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audioQueue.delegate = self
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self.machine.audioQueue = self.audioQueue
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self.machine.setAudioSamplingRate(selectedSamplingRate, bufferSize:audioQueue.preferredBufferSize)
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}
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self.bestEffortUpdater.clockRate = self.machine.clockRate
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}
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override func close() {
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bestEffortUpdater.flush()
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actionLock.lock()
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drawLock.lock()
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openGLView.invalidate()
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openGLView.openGLContext!.makeCurrentContext()
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actionLock.unlock()
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drawLock.unlock()
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super.close()
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}
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// MARK: configuring
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func configureAs(_ analysis: CSStaticAnalyser) {
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if let machine = analysis.newMachine() {
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self.machine = machine
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}
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analysis.apply(to: self.machine)
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if let optionsPanelNibName = analysis.optionsPanelNibName {
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Bundle.main.loadNibNamed(optionsPanelNibName, owner: self, topLevelObjects: nil)
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self.optionsPanel.machine = self.machine
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showOptions(self)
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}
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}
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override func read(from url: URL, ofType typeName: String) throws {
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if let analyser = CSStaticAnalyser(fileAt: url) {
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self.displayName = analyser.displayName
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self.configureAs(analyser)
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} else {
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throw NSError(domain: "MachineDocument", code: -1, userInfo: nil)
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}
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}
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// MARK: the pasteboard
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func paste(_ sender: AnyObject!) {
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let pasteboard = NSPasteboard.general()
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if let string = pasteboard.string(forType: NSPasteboardTypeString) {
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self.machine.paste(string)
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}
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}
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// MARK: CSBestEffortUpdaterDelegate
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final func bestEffortUpdater(_ bestEffortUpdater: CSBestEffortUpdater!, runForCycles cycles: UInt, didSkipPreviousUpdate: Bool) {
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runForNumberOfCycles(Int32(cycles))
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}
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func runForNumberOfCycles(_ numberOfCycles: Int32) {
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let cyclesToRunFor = min(numberOfCycles, Int32(bestEffortUpdater.clockRate / 10))
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if actionLock.try() {
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self.machine.runForNumber(ofCycles: cyclesToRunFor)
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actionLock.unlock()
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}
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}
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// MARK: CSAudioQueueDelegate
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final func audioQueueIsRunningDry(_ audioQueue: CSAudioQueue) {
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bestEffortUpdater.update()
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}
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// MARK: CSOpenGLViewDelegate
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final func openGLView(_ view: CSOpenGLView, drawViewOnlyIfDirty onlyIfDirty: Bool) {
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bestEffortUpdater.update()
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if drawLock.try() {
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self.machine.drawView(forPixelSize: view.backingSize, onlyIfDirty: onlyIfDirty)
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drawLock.unlock()
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}
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}
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// MARK: NSDocument overrides
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override func data(ofType typeName: String) throws -> Data {
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throw NSError(domain: NSOSStatusErrorDomain, code: unimpErr, userInfo: nil)
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}
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// MARK: Input management
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fileprivate func withKeyboardMachine(_ action: (CSKeyboardMachine) -> ()) {
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if let keyboardMachine = self.machine as? CSKeyboardMachine {
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action(keyboardMachine)
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}
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}
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fileprivate func withJoystickMachine(_ action: (CSJoystickMachine) -> ()) {
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if let joystickMachine = self.machine as? CSJoystickMachine {
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action(joystickMachine)
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}
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}
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fileprivate func sendJoystickEvent(_ machine: CSJoystickMachine, keyCode: UInt16, isPressed: Bool) {
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switch keyCode {
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case 123: machine.setDirection(.left, onPad: 0, isPressed: isPressed)
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case 126: machine.setDirection(.up, onPad: 0, isPressed: isPressed)
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case 124: machine.setDirection(.right, onPad: 0, isPressed: isPressed)
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case 125: machine.setDirection(.down, onPad: 0, isPressed: isPressed)
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default: machine.setButtonAt(0, onPad: 0, isPressed: isPressed)
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}
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}
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func windowDidResignKey(_ notification: Notification) {
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self.withKeyboardMachine { $0.clearAllKeys() }
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}
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func keyDown(_ event: NSEvent) {
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self.withKeyboardMachine { $0.setKey(event.keyCode, isPressed: true) }
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self.withJoystickMachine { sendJoystickEvent($0, keyCode: event.keyCode, isPressed: true) }
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}
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func keyUp(_ event: NSEvent) {
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self.withKeyboardMachine { $0.setKey(event.keyCode, isPressed: false) }
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self.withJoystickMachine { sendJoystickEvent($0, keyCode: event.keyCode, isPressed: false) }
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}
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func flagsChanged(_ newModifiers: NSEvent) {
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self.withKeyboardMachine {
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$0.setKey(VK_Shift, isPressed: newModifiers.modifierFlags.contains(.shift))
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$0.setKey(VK_Control, isPressed: newModifiers.modifierFlags.contains(.control))
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$0.setKey(VK_Command, isPressed: newModifiers.modifierFlags.contains(.command))
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$0.setKey(VK_Option, isPressed: newModifiers.modifierFlags.contains(.option))
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}
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}
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}
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