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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.
*
*/
#ifndef COMMON_HARDWARE_KEY_H
#define COMMON_HARDWARE_KEY_H
#include "common/scummsys.h"
#ifdef ENABLE_KEYMAPPER
#include "common/textconsole.h"
namespace Common {
/**
* Describes an available hardware key
*/
struct HardwareKey {
/** unique id used for saving/loading to config */
String id;
/** Human readable description */
String description;
/**
* The KeyState that is generated by the back-end
* when this hardware key is pressed.
*/
KeyState key;
HardwareKey(String i, KeyState ky = KeyState(), String desc = "")
: id(i), key(ky), description(desc) { }
};
/**
* Entry in a static table of available non-modifier keys
*/
struct KeyTableEntry {
const char *hwId;
KeyCode keycode;
uint16 ascii;
const char *desc;
bool shiftable;
};
/**
* Entry in a static table of available key modifiers
*/
struct ModifierTableEntry {
byte flag;
const char *id;
const char *desc;
bool shiftable;
};
/**
* Simple class to encapsulate a device's set of HardwareKeys.
* Each device should instantiate this and call addHardwareKey a number of times
* in its constructor to define the device's available keys.
*/
class HardwareKeySet {
public:
/**
* Add hardware keys to the set out of key and modifier tables.
* @param keys table of available keys
* @param modifiers table of available modifiers
*/
HardwareKeySet(const KeyTableEntry keys[], const ModifierTableEntry modifiers[]) {
addHardwareKeys(keys, modifiers);
}
HardwareKeySet() { }
virtual ~HardwareKeySet() {
List<const HardwareKey *>::const_iterator it;
for (it = _keys.begin(); it != _keys.end(); it++)
delete *it;
}
void addHardwareKey(const HardwareKey *key) {
checkForKey(key);
_keys.push_back(key);
}
const HardwareKey *findHardwareKey(String id) const {
List<const HardwareKey *>::const_iterator it;
for (it = _keys.begin(); it != _keys.end(); it++) {
if ((*it)->id == id)
return (*it);
}
return 0;
}
const HardwareKey *findHardwareKey(const KeyState& keystate) const {
List<const HardwareKey *>::const_iterator it;
for (it = _keys.begin(); it != _keys.end(); it++) {
if ((*it)->key == keystate)
return (*it);
}
return 0;
}
const List<const HardwareKey *> &getHardwareKeys() const {
return _keys;
}
uint size() const {
return _keys.size();
}
/**
* Add hardware keys to the set out of key and modifier tables.
* @param keys table of available keys
* @param modifiers table of available modifiers
*/
void addHardwareKeys(const KeyTableEntry keys[], const ModifierTableEntry modifiers[]) {
const KeyTableEntry *key;
const ModifierTableEntry *mod;
char fullKeyId[50];
char fullKeyDesc[100];
uint16 ascii;
for (mod = modifiers; mod->id; mod++) {
for (key = keys; key->hwId; key++) {
ascii = key->ascii;
if (mod->shiftable && key->shiftable) {
snprintf(fullKeyId, 50, "%s%c", mod->id, toupper(key->hwId[0]));
snprintf(fullKeyDesc, 100, "%s%c", mod->desc, toupper(key->desc[0]));
ascii = toupper(key->ascii);
} else if (mod->shiftable) {
snprintf(fullKeyId, 50, "S+%s%s", mod->id, key->hwId);
snprintf(fullKeyDesc, 100, "Shift+%s%s", mod->desc, key->desc);
} else {
snprintf(fullKeyId, 50, "%s%s", mod->id, key->hwId);
snprintf(fullKeyDesc, 100, "%s%s", mod->desc, key->desc);
}
addHardwareKey(new HardwareKey(fullKeyId, KeyState(key->keycode, ascii, mod->flag), fullKeyDesc));
}
}
}
private:
void checkForKey(const HardwareKey *key) {
List<const HardwareKey *>::iterator it;
for (it = _keys.begin(); it != _keys.end(); it++) {
if ((*it)->id == key->id)
error("Error adding HardwareKey '%s' - id of %s already in use!", key->description.c_str(), key->id.c_str());
else if ((*it)->key == key->key)
error("Error adding HardwareKey '%s' - key already in use!", key->description.c_str());
}
}
List<const HardwareKey *> _keys;
};
} // End of namespace Common
#endif // #ifdef ENABLE_KEYMAPPER
#endif // #ifndef COMMON_HARDWARE_KEY_H
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