config: Add option to resolve keybinds by sym instead of code (#4851)

This commit adds the new configuration option 'resolve_binds_by_sym'
which can be set globally or per-device. It is off by default, which
preserves the current behavior.

This setting only affects the behavior of keybinds that are defined via
key symbols, not those defined via keycode. Binds defined by symbols
currently activate if the keycode pressed would generate the specified
symbol on the first layout specified in the input section.
If enabled, keys pressed on the relevant device will instead match
keybinds by the symbols they produce with their current layout.

Closes #1881.

src/config/ConfigManager.cpp

@@ -448,6 +448,7 @@ CConfigManager::CConfigManager() {
     m_pConfig->addConfigValue("input:repeat_delay", {600L});
     m_pConfig->addConfigValue("input:natural_scroll", {0L});
     m_pConfig->addConfigValue("input:numlock_by_default", {0L});
+    m_pConfig->addConfigValue("input:resolve_binds_by_sym", {0L});
     m_pConfig->addConfigValue("input:force_no_accel", {0L});
     m_pConfig->addConfigValue("input:float_switch_override_focus", {1L});
     m_pConfig->addConfigValue("input:left_handed", {0L});
@@ -533,6 +534,7 @@ CConfigManager::CConfigManager() {
     m_pConfig->addSpecialConfigValue("device", "natural_scroll", {0L});
     m_pConfig->addSpecialConfigValue("device", "tap_button_map", {STRVAL_EMPTY});
     m_pConfig->addSpecialConfigValue("device", "numlock_by_default", {0L});
+    m_pConfig->addSpecialConfigValue("device", "resolve_binds_by_sym", {0L});
     m_pConfig->addSpecialConfigValue("device", "disable_while_typing", {1L});
     m_pConfig->addSpecialConfigValue("device", "clickfinger_behavior", {0L});
     m_pConfig->addSpecialConfigValue("device", "middle_button_emulation", {0L});

src/helpers/WLClasses.hpp

@@ -128,6 +128,7 @@ struct SKeyboard {
     bool               enabled   = true;
 
     xkb_layout_index_t activeLayout        = 0;
+    xkb_state*         xkbTranslationState = nullptr;
 
     std::string        name        = "";
     std::string        xkbFilePath = "";
@@ -136,6 +137,7 @@ struct SKeyboard {
     int                repeatRate        = 0;
     int                repeatDelay       = 0;
     int                numlockOn         = -1;
+    bool               resolveBindsBySym = false;
 
     // For the list lookup
     bool operator==(const SKeyboard& rhs) const {

src/managers/KeybindManager.cpp

@@ -304,7 +304,7 @@ bool CKeybindManager::onKeyEvent(wlr_keyboard_key_event* e, SKeyboard* pKeyboard
 
     const auto         KEYCODE = e->keycode + 8; // Because to xkbcommon it's +8 from libinput
 
-    const xkb_keysym_t keysym         = xkb_state_key_get_one_sym(m_pXKBTranslationState, KEYCODE);
+    const xkb_keysym_t keysym         = xkb_state_key_get_one_sym(pKeyboard->resolveBindsBySym ? pKeyboard->xkbTranslationState : m_pXKBTranslationState, KEYCODE);
     const xkb_keysym_t internalKeysym = xkb_state_key_get_one_sym(wlr_keyboard_from_input_device(pKeyboard->keyboard)->xkb_state, KEYCODE);
 
     if (handleInternalKeybinds(internalKeysym))

src/managers/input/InputManager.cpp

@@ -824,6 +824,7 @@ void CInputManager::applyConfigToKeyboard(SKeyboard* pKeyboard) {
     const auto REPEATDELAY = g_pConfigManager->getDeviceInt(devname, "repeat_delay", "input:repeat_delay");
 
     const auto NUMLOCKON         = g_pConfigManager->getDeviceInt(devname, "numlock_by_default", "input:numlock_by_default");
+    const auto RESOLVEBINDSBYSYM = g_pConfigManager->getDeviceInt(devname, "resolve_binds_by_sym", "input:resolve_binds_by_sym");
 
     const auto FILEPATH = g_pConfigManager->getDeviceString(devname, "kb_file", "input:kb_file");
     const auto RULES    = g_pConfigManager->getDeviceString(devname, "kb_rules", "input:kb_rules");
@@ -835,6 +836,7 @@ void CInputManager::applyConfigToKeyboard(SKeyboard* pKeyboard) {
     const auto ENABLED = HASCONFIG ? g_pConfigManager->getDeviceInt(devname, "enabled") : true;
 
     pKeyboard->enabled           = ENABLED;
+    pKeyboard->resolveBindsBySym = RESOLVEBINDSBYSYM;
 
     try {
         if (NUMLOCKON == pKeyboard->numlockOn && REPEATDELAY == pKeyboard->repeatDelay && REPEATRATE == pKeyboard->repeatRate && RULES != "" &&
@@ -906,6 +908,9 @@ void CInputManager::applyConfigToKeyboard(SKeyboard* pKeyboard) {
         KEYMAP = xkb_keymap_new_from_names(CONTEXT, &rules, XKB_KEYMAP_COMPILE_NO_FLAGS);
     }
 
+    xkb_state_unref(pKeyboard->xkbTranslationState);
+    pKeyboard->xkbTranslationState = xkb_state_new(KEYMAP);
+
     wlr_keyboard_set_keymap(wlr_keyboard_from_input_device(pKeyboard->keyboard), KEYMAP);
 
     wlr_keyboard_modifiers wlrMods = {0};
@@ -1127,6 +1132,8 @@ void CInputManager::destroyKeyboard(SKeyboard* pKeyboard) {
     pKeyboard->hyprListener_keyboardMod.removeCallback();
     pKeyboard->hyprListener_keyboardKey.removeCallback();
 
+    xkb_state_unref(pKeyboard->xkbTranslationState);
+
     if (pKeyboard->active) {
         m_lKeyboards.remove(*pKeyboard);