input: Add KeyNumLock (#580)

genkeys.go

@@ -69,6 +69,7 @@ func init() {
 		"Backslash":    {"Backslash"},
 		"RightBracket": {"BracketRight"},
 		"GraveAccent":  {"Backquote"},
+		"NumLock":      {"NumLock"},
 	}
 	// ASCII: 0 - 9
 	for c := '0'; c <= '9'; c++ {

internal/input/keys.go

@@ -103,6 +103,7 @@ const (
 	KeyLeft
 	KeyLeftBracket
 	KeyMinus
+	KeyNumLock
 	KeyPageDown
 	KeyPageUp
 	KeyPeriod

internal/input/keys_glfw.go

@@ -108,6 +108,7 @@ var glfwKeyCodeToKey = map[glfw.Key]Key{
 	glfw.KeyLeft:         KeyLeft,
 	glfw.KeyLeftBracket:  KeyLeftBracket,
 	glfw.KeyMinus:        KeyMinus,
+	glfw.KeyNumLock:      KeyNumLock,
 	glfw.KeyPageDown:     KeyPageDown,
 	glfw.KeyPageUp:       KeyPageUp,
 	glfw.KeyPeriod:       KeyPeriod,

internal/input/keys_js.go

@@ -235,6 +235,9 @@ var keyToCodes = map[Key][]string{
 	KeyN: {
 		"KeyN",
 	},
+	KeyNumLock: {
+		"NumLock",
+	},
 	KeyO: {
 		"KeyO",
 	},

keys.go

@@ -113,6 +113,7 @@ const (
 	KeyLeft         Key = Key(input.KeyLeft)
 	KeyLeftBracket  Key = Key(input.KeyLeftBracket)
 	KeyMinus        Key = Key(input.KeyMinus)
+	KeyNumLock      Key = Key(input.KeyNumLock)
 	KeyPageDown     Key = Key(input.KeyPageDown)
 	KeyPageUp       Key = Key(input.KeyPageUp)
 	KeyPeriod       Key = Key(input.KeyPeriod)
@@ -297,6 +298,8 @@ func keyNameToKey(name string) (Key, bool) {
 		return KeyLeftBracket, true
 	case "minus":
 		return KeyMinus, true
+	case "numlock":
+		return KeyNumLock, true
 	case "pagedown":
 		return KeyPageDown, true
 	case "pageup":