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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
* 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.
* $URL$
* $Id$


#include "common/scummsys.h"


#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 | ((uint)val.flags << 24);

class Keymap {
      Keymap(const String& name, Keymap *parent = 0) : _name(name), _parent(parent) {}
      Keymap(const Keymap& km);

       * 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(const char *id);

       * Get the list of all the Actions contained in this Keymap
      List<Action*>& getActions() { 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;

      void setConfigDomain(ConfigManager::Domain *dom);

       * Load this keymap's mappings from the config manager.
       * @param hwKeys  the set to retrieve hardware key pointers from
      void loadMappings(const HardwareKeySet *hwKeys);

       * Save this keymap's mappings to the config manager
       * @note Changes are *not* flushed to disk, to do so call ConfMan.flushToDisk()
       * @note Changes are *not* flushed to disk, to do so call ConfMan.flushToDisk()
      void saveMappings();

      void automaticMapping(HardwareKeySet *hwKeys);

       * 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);

      const String& getName() { return _name; }
      Keymap *getParent() { return _parent; }

      friend struct Action;

       * 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);

      * 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(const char *id);
      const Action *findAction(const char *id) const;

      void internalMapKey(Action *action, HardwareKey *hwKey);

      Action *getParentMappedAction(KeyState key);

      String _name;
      Keymap *_parent;
      List<Action*> _actions;
      HashMap<KeyState, Action*> _keymap;
      ConfigManager::Domain *_configDomain;


} // End of namespace Common

#endif // #ifdef ENABLE_KEYMAPPER

#endif // #ifndef COMMON_KEYMAP_H

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