1 files changed, 79 insertions, 0 deletions
diff --git a/vncviewer/ShortcutHandler.h b/vncviewer/ShortcutHandler.h
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+/* Copyright 2021-2025 Pierre Ossman for Cendio AB
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+#ifndef __SHORTCUTHANDLER__
+#define __SHORTCUTHANDLER__
+
+#include <set>
+#include <map>
+
+#include <stdint.h>
+
+class ShortcutHandler {
+public:
+  ShortcutHandler();
+
+  void setModifiers(unsigned mask);
+
+  enum KeyAction {
+    KeyNormal,
+    KeyUnarm,
+    KeyShortcut,
+    KeyIgnore,
+  };
+
+  KeyAction handleKeyPress(int keyCode, uint32_t keySym);
+  KeyAction handleKeyRelease(int keyCode);
+
+  void reset();
+
+public:
+  enum Modifier {
+    Control = (1<<0),
+    Shift =   (1<<1),
+    Alt =     (1<<2),
+    Super =   (1<<3),
+  };
+
+  static unsigned parseModifier(const char* key);
+  static const char* modifierString(unsigned key);
+
+  static const char* modifierPrefix(unsigned mask,
+                                    bool justPrefix=false);
+
+private:
+  unsigned keySymToModifier(uint32_t keySym);
+
+private:
+  unsigned modifierMask;
+
+  enum State {
+    Idle,
+    Arming,
+    Armed,
+    Rearming,
+    Firing,
+    Wedged,
+  };
+  State state;
+
+  std::set<int> firedKeys;
+  std::map<int, uint32_t> pressedKeys;
+};
+
+#endif