Deamon management

shared/keymap.h

@@ -0,0 +1,51 @@
+// gKeyMapper - keyboard layout lookups (xkbcommon), shared by GUI and daemon.
+//
+// The active layout is read from /etc/default/keyboard (XKBLAYOUT). Without it,
+// names fall back to the layout-independent US key positions in shared/keys.
+#ifndef GKEYMAPPER_KEYMAP_H
+#define GKEYMAPPER_KEYMAP_H
+
+#include <string>
+
+struct xkb_keymap;
+struct xkb_state;
+
+namespace gkeymapper {
+
+// Two-way lookup on the active keyboard layout:
+//   - daemon: canonical key name -> Linux input (evdev) code
+//   - GUI:    pressed X keycode  -> canonical base key name (level 0)
+class Keymap {
+public:
+    Keymap() = default;
+    ~Keymap();
+
+    Keymap(const Keymap&) = delete;
+    Keymap& operator=(const Keymap&) = delete;
+
+    // Builds the keymap from /etc/default/keyboard. Returns false if it cannot
+    // be built; the lookups then use the US fallback.
+    bool init();
+
+    bool is_ready() const { return state_ != nullptr; }
+    const std::string& layout_name() const { return layoutName_; }
+
+    // Canonical key name -> Linux input (evdev) code, e.g. "z" -> 21 on a German
+    // layout. Falls back to linux_key_code() for names that are not part of the
+    // layout.
+    int key_code(const std::string& name) const;
+
+    // X keycode (same value GDK reports) -> level-0 keysym name, lowercased
+    // ("ssharp", "a", "f4"). Empty if it cannot be resolved. Used by the capture
+    // dialog so "shift+ssharf" is recorded instead of the shifted symbol.
+    std::string base_key_name(unsigned int keycode) const;
+
+private:
+    xkb_keymap* keymap_ = nullptr;
+    xkb_state* state_ = nullptr;
+    std::string layoutName_;
+};
+
+} // namespace gkeymapper
+
+#endif // GKEYMAPPER_KEYMAP_H