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Fix a bug which meta keys don't work in some apps
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,88 @@ | ||
| // | ||
| // MetaKeyState.swift | ||
| // JoyKeyMapper | ||
| // | ||
| // Created by magicien on 2020/06/16. | ||
| // Copyright © 2020 DarkHorse. All rights reserved. | ||
| // | ||
|
|
||
| import InputMethodKit | ||
|
|
||
| private let shiftKey = Int32(kVK_Shift) | ||
| private let optionKey = Int32(kVK_Option) | ||
| private let controlKey = Int32(kVK_Control) | ||
| private let commandKey = Int32(kVK_Command) | ||
| private let metaKeys = [kVK_Shift, kVK_Option, kVK_Control, kVK_Command] | ||
| private var pushedKeyConfigs = Set<KeyMap>() | ||
|
|
||
| func resetMetaKeyState() { | ||
| let source = CGEventSource(stateID: .hidSystemState) | ||
| pushedKeyConfigs.removeAll() | ||
|
|
||
| DispatchQueue.main.async { | ||
| // Release all meta keys | ||
| metaKeys.forEach { | ||
| let ev = CGEvent(keyboardEventSource: source, virtualKey: CGKeyCode($0), keyDown: false) | ||
| ev?.post(tap: .cghidEventTap) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func getMetaKeyState() -> (shift: Bool, option: Bool, control: Bool, command: Bool) { | ||
| var shift: Bool = false | ||
| var option: Bool = false | ||
| var control: Bool = false | ||
| var command: Bool = false | ||
|
|
||
| pushedKeyConfigs.forEach { | ||
| let modifiers = NSEvent.ModifierFlags(rawValue: UInt($0.modifiers)) | ||
| shift = shift || modifiers.contains(.shift) | ||
| option = option || modifiers.contains(.option) | ||
| control = control || modifiers.contains(.control) | ||
| command = command || modifiers.contains(.command) | ||
| } | ||
|
|
||
| return (shift, option, control, command) | ||
| } | ||
|
|
||
| /** | ||
| * This command must be called in the main thread | ||
| */ | ||
| func metaKeyEvent(config: KeyMap, keyDown: Bool) { | ||
| var shift: Bool | ||
| var option: Bool | ||
| var control: Bool | ||
| var command: Bool | ||
|
|
||
| if keyDown { | ||
| // Check if meta keys are not pressed before pressing keys | ||
| (shift, option, control, command) = getMetaKeyState() | ||
| pushedKeyConfigs.insert(config) | ||
| } else { | ||
| pushedKeyConfigs.remove(config) | ||
| // Check if meta keys are not pressed after releasing keys | ||
| (shift, option, control, command) = getMetaKeyState() | ||
| } | ||
|
|
||
| let source = CGEventSource(stateID: .hidSystemState) | ||
| let modifiers = NSEvent.ModifierFlags(rawValue: UInt(config.modifiers)) | ||
| if !shift && modifiers.contains(.shift) { | ||
| let ev = CGEvent(keyboardEventSource: source, virtualKey: CGKeyCode(kVK_Shift), keyDown: keyDown) | ||
| ev?.post(tap: .cghidEventTap) | ||
| } | ||
|
|
||
| if !option && modifiers.contains(.option) { | ||
| let ev = CGEvent(keyboardEventSource: source, virtualKey: CGKeyCode(kVK_Option), keyDown: keyDown) | ||
| ev?.post(tap: .cghidEventTap) | ||
| } | ||
|
|
||
| if !control && modifiers.contains(.control) { | ||
| let ev = CGEvent(keyboardEventSource: source, virtualKey: CGKeyCode(kVK_Control), keyDown: keyDown) | ||
| ev?.post(tap: .cghidEventTap) | ||
| } | ||
|
|
||
| if !command && modifiers.contains(.command) { | ||
| let ev = CGEvent(keyboardEventSource: source, virtualKey: CGKeyCode(kVK_Command), keyDown: keyDown) | ||
| ev?.post(tap: .cghidEventTap) | ||
| } | ||
| } |