forked from liamg/darktile
/
keys.go
116 lines (99 loc) · 2.21 KB
/
keys.go
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package config
import (
"fmt"
"strings"
"github.com/go-gl/glfw/v3.2/glfw"
)
type KeyCombination struct {
mods glfw.ModifierKey
key glfw.Key
}
type KeyMod string
const (
ctrl KeyMod = "ctrl"
alt KeyMod = "alt"
shift KeyMod = "shift"
super KeyMod = "super"
)
var modMap = map[KeyMod]glfw.ModifierKey{
ctrl: glfw.ModControl,
alt: glfw.ModAlt,
shift: glfw.ModShift,
super: glfw.ModSuper,
}
var keyMap = map[string]glfw.Key{
"a": glfw.KeyA,
"b": glfw.KeyB,
"c": glfw.KeyC,
"d": glfw.KeyD,
"e": glfw.KeyE,
"f": glfw.KeyF,
"g": glfw.KeyG,
"h": glfw.KeyH,
"i": glfw.KeyI,
"j": glfw.KeyJ,
"k": glfw.KeyK,
"l": glfw.KeyL,
"m": glfw.KeyM,
"n": glfw.KeyN,
"o": glfw.KeyO,
"p": glfw.KeyP,
"q": glfw.KeyQ,
"r": glfw.KeyR,
"s": glfw.KeyS,
"t": glfw.KeyT,
"u": glfw.KeyU,
"v": glfw.KeyV,
"w": glfw.KeyW,
"x": glfw.KeyX,
"y": glfw.KeyY,
"z": glfw.KeyZ,
";": glfw.KeySemicolon,
}
// keyStr e.g. "ctrl + alt + a"
func parseKeyCombination(keyStr string) (*KeyCombination, error) {
var mods glfw.ModifierKey
var key *glfw.Key
keys := strings.Split(keyStr, "+")
for _, k := range keys {
k = strings.ToLower(strings.TrimSpace(k))
mod, ok := modMap[KeyMod(k)]
if ok {
mods = mods + mod
continue
}
mappedKey, ok := keyMap[k]
if ok {
if key != nil {
return nil, fmt.Errorf("Multiple non-modifier keys specified in keyboard shortcut")
}
key = &mappedKey
continue
}
return nil, fmt.Errorf("Unknown key '%s' in configured keyboard shortcut", k)
}
if key == nil {
return nil, fmt.Errorf("No non-modifier key specified in keyboard shortcut")
}
if mods == 0 {
return nil, fmt.Errorf("No modifier key specified in keyboard shortcut")
}
return &KeyCombination{
mods: mods,
key: *key,
}, nil
}
func (combi KeyCombination) Match(pressedMods glfw.ModifierKey, pressedKey glfw.Key) bool {
return pressedKey == combi.key && pressedMods == combi.mods
}
func (keyMapConfig KeyMappingConfig) GenerateActionMap() (map[UserAction]*KeyCombination, error) {
m := map[UserAction]*KeyCombination{}
for actionStr, keyStr := range keyMapConfig {
combi, err := parseKeyCombination(keyStr)
if err != nil {
return nil, err
}
m[UserAction(actionStr)] = combi
}
return m, nil
}