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+/* ScummVM - Graphic Adventure Engine
+*
+* ScummVM is the legal property of its developers, whose names
+* are too numerous to list here. Please refer to the COPYRIGHT
+* file distributed with this source distribution.
+*
+* This program 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 program 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 program; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+*
+* $URL$
+* $Id$
+*
+*/
+
+#ifndef COMMON_KEYMAP
+#define COMMON_KEYMAP
+
+#include "common/config-manager.h"
+#include "common/func.h"
+#include "common/hashmap.h"
+#include "common/keyboard.h"
+#include "common/list.h"
+#include "backends/keymapper/action.h"
+
+namespace Common {
+
+struct HardwareKey;
+class HardwareKeySet;
+
+/**
+ * Hash function for KeyState
+ */
+template<> struct Hash<KeyState>
+ : public UnaryFunction<KeyState, uint> {
+
+ uint operator()(const KeyState &val) const {
+ return (uint)(val.keycode * (val.flags << 1));
+ }
+};
+
+class Keymap {
+public:
+ Keymap() {}
+ Keymap(const Keymap& km);
+
+public:
+ /**
+ * Adds a new Action to this Map,
+ * adding it at the back of the internal array
+ * @param action the Action to add
+ */
+ void addAction(Action *action);
+
+ /**
+ * Retrieves the Action with the given id
+ * @param id id of Action to retrieve
+ * @return Pointer to the Action or 0 if not found
+ */
+ Action *getAction(int32 id);
+
+ /**
+ * Get a read-only array of all the Actions contained in this Keymap
+ */
+ const List<Action*>& getActions() const { return _actions; }
+
+ /**
+ * Find the Action that a key is mapped to
+ * @param key the key that is mapped to the required Action
+ * @return a pointer to the Action or 0 if no
+ */
+ Action *getMappedAction(const KeyState& ks) const;
+
+ /**
+ * Load this keymap's mappings from the given config domain and hardware key set
+ * @param domain config domain to load keymap from
+ * @param name name of the keymap to load
+ * @param hwKeys the set to retrieve hardware key pointers from
+ */
+ void loadMappings(ConfigManager::Domain *domain, const String& name, const HardwareKeySet *hwKeys);
+
+ /**
+ * Save this keymap's mappings to the given config domain
+ * @param domain config domain to save keymap to
+ * @param name name to save the keymap under
+ */
+ void saveMappings(ConfigManager::Domain *domain, const String& name);
+
+ /**
+ * Returns true if all UserAction's in Keymap are mapped, or,
+ * all HardwareKey's from the given set have been used up.
+ */
+ bool isComplete(const HardwareKeySet *hwKeys);
+
+private:
+ friend struct Action;
+ /**
+ * Registers a HardwareKey to the given Action
+ * @param action Action in this Keymap
+ * @param key pointer to HardwareKey to map
+ * @see Action::mapKey
+ */
+ void registerMapping(Action *action, const HardwareKey *key);
+
+ /**
+ * Unregisters a HardwareKey from the given Action (if one is mapped)
+ * @param action Action in this Keymap
+ * @see Action::mapKey
+ */
+ void unregisterMapping(Action *action);
+
+ Action *findAction(int32 id);
+ const Action *findAction(int32 id) const;
+
+ void internalMapKey(Action *action, HardwareKey *hwKey);
+
+ List<Action*> _actions;
+ HashMap<KeyState, Action*> _keymap;
+
+};
+
+
+} // end of namespace Common
+
+#endif