mirror of https://github.com/liamg/aminal.git
82 lines
1.6 KiB
Go
82 lines
1.6 KiB
Go
package config
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import (
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"fmt"
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"strings"
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"github.com/go-gl/glfw/v3.3/glfw"
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)
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type KeyCombination struct {
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mods glfw.ModifierKey
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char rune
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}
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type KeyMod string
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const (
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ctrl KeyMod = "ctrl"
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alt KeyMod = "alt"
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shift KeyMod = "shift"
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super KeyMod = "super"
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)
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var modMap = map[KeyMod]glfw.ModifierKey{
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ctrl: glfw.ModControl,
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alt: glfw.ModAlt,
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shift: glfw.ModShift,
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super: glfw.ModSuper,
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}
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// keyStr e.g. "ctrl + alt + a"
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func parseKeyCombination(keyStr string) (*KeyCombination, error) {
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var mods glfw.ModifierKey
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var key rune
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keys := strings.Split(keyStr, "+")
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for _, k := range keys {
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k = strings.ToLower(strings.TrimSpace(k))
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mod, ok := modMap[KeyMod(k)]
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if ok {
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mods = mods + mod
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continue
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}
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if key > 0 {
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return nil, fmt.Errorf("Multiple non-modifier keys specified in keyboard shortcut")
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}
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key = rune(k[0])
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}
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if key == 0 {
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return nil, fmt.Errorf("No non-modifier key specified in keyboard shortcut")
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}
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if mods == 0 {
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return nil, fmt.Errorf("No modifier key specified in keyboard shortcut")
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}
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return &KeyCombination{
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mods: mods,
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char: key,
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}, nil
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}
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func (combi KeyCombination) Match(pressedMods glfw.ModifierKey, pressedChar rune) bool {
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return pressedChar == combi.char && pressedMods == combi.mods
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}
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func (keyMapConfig KeyMappingConfig) GenerateActionMap() (map[UserAction]*KeyCombination, error) {
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m := map[UserAction]*KeyCombination{}
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for actionStr, keyStr := range keyMapConfig {
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combi, err := parseKeyCombination(keyStr)
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if err != nil {
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return nil, err
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}
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m[UserAction(actionStr)] = combi
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}
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return m, nil
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}
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