hyprctl: add an active layout index field in devices (#11531)

2 files changed, 31 insertions, 17 deletions

diff --git a/src/devices/IKeyboard.cpp b/src/devices/IKeyboard.cpp
index 4f2281b7..ad9e40d8 100644
--- a/src/devices/IKeyboard.cpp
+++ b/src/devices/IKeyboard.cpp
@@ -266,6 +266,19 @@ void IKeyboard::updateXKBTranslationState(xkb_keymap* const keymap) {
     xkb_context_unref(PCONTEXT);
 }
 
+std::optional<xkb_layout_index_t> IKeyboard::getActiveLayoutIndex() {
+    const auto KEYMAP     = m_xkbKeymap;
+    const auto STATE      = m_xkbState;
+    const auto LAYOUTSNUM = xkb_keymap_num_layouts(KEYMAP);
+
+    for (xkb_layout_index_t i = 0; i < LAYOUTSNUM; ++i) {
+        if (xkb_state_layout_index_is_active(STATE, i, XKB_STATE_LAYOUT_EFFECTIVE) == 1)
+            return i;
+    }
+
+    return {};
+}
+
 std::string IKeyboard::getActiveLayout() {
     const auto KEYMAP     = m_xkbKeymap;
     const auto STATE      = m_xkbState;
diff --git a/src/devices/IKeyboard.hpp b/src/devices/IKeyboard.hpp
index f4fb667b..c7832548 100644
--- a/src/devices/IKeyboard.hpp
+++ b/src/devices/IKeyboard.hpp
@@ -65,23 +65,24 @@ class IKeyboard : public IHID {
         std::string rules   = "";
     };
 
-    void                    setKeymap(const SStringRuleNames& rules);
-    void                    updateXKBTranslationState(xkb_keymap* const keymap = nullptr);
-    std::string             getActiveLayout();
-    std::optional<uint32_t> getLEDs();
-    void                    updateLEDs();
-    void                    updateLEDs(uint32_t leds);
-    uint32_t                getModifiers();
-    void                    updateModifiers(uint32_t depressed, uint32_t latched, uint32_t locked, uint32_t group);
-    bool                    updateModifiersState(); // rets whether changed
-    void                    updateXkbStateWithKey(uint32_t xkbKey, bool pressed);
-    void                    updateKeymapFD();
-    bool                    getPressed(uint32_t key);
-    bool                    shareStates();
-
-    bool                    m_active     = false;
-    bool                    m_enabled    = true;
-    bool                    m_allowBinds = true;
+    void                              setKeymap(const SStringRuleNames& rules);
+    void                              updateXKBTranslationState(xkb_keymap* const keymap = nullptr);
+    std::optional<xkb_layout_index_t> getActiveLayoutIndex();
+    std::string                       getActiveLayout();
+    std::optional<uint32_t>           getLEDs();
+    void                              updateLEDs();
+    void                              updateLEDs(uint32_t leds);
+    uint32_t                          getModifiers();
+    void                              updateModifiers(uint32_t depressed, uint32_t latched, uint32_t locked, uint32_t group);
+    bool                              updateModifiersState(); // rets whether changed
+    void                              updateXkbStateWithKey(uint32_t xkbKey, bool pressed);
+    void                              updateKeymapFD();
+    bool                              getPressed(uint32_t key);
+    bool                              shareStates();
+
+    bool                              m_active     = false;
+    bool                              m_enabled    = true;
+    bool                              m_allowBinds = true;
 
     // permission flag: whether this keyboard is allowed to be processed
     bool m_allowed = true;