barrier/lib/platform/CXWindowsKeyMapper.h

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/*
* synergy -- mouse and keyboard sharing utility
* Copyright (C) 2003 Chris Schoeneman
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file COPYING that should have accompanied this file.
*
* This package 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.
*/
#ifndef CXWINDOWSKEYMAPPER_H
#define CXWINDOWSKEYMAPPER_H
#include "IKeyState.h"
#include "stdmap.h"
#if defined(X_DISPLAY_MISSING)
# error X11 is required to build synergy
#else
# include <X11/Xlib.h>
#endif
//! X Windows key mapper
/*!
This class maps KeyIDs to keystrokes.
*/
class CXWindowsKeyMapper {
public:
CXWindowsKeyMapper();
~CXWindowsKeyMapper();
//! @name manipulators
//@{
//! Update key mapper
/*!
Updates the key mapper's internal tables according to the display's
current keyboard mapping and updates \c keyState.
*/
void update(Display*, IKeyState* keyState);
//@}
//! @name accessors
//@{
//! Map key press/repeat to keystrokes
/*!
Converts a press/repeat of key \c id with the modifiers as given
in \c desiredMask into the keystrokes necessary to synthesize
that key event. Returns the platform specific code of the key
being pressed, or 0 if the key cannot be mapped or \c isAutoRepeat
is true and the key does not auto-repeat.
*/
KeyButton mapKey(IKeyState::Keystrokes&,
const IKeyState& keyState, KeyID id,
KeyModifierMask desiredMask,
bool isAutoRepeat) const;
//! Convert X modifier mask to synergy mask
/*!
Returns the synergy modifier mask corresponding to the given X
modifier mask.
*/
KeyModifierMask mapModifier(unsigned int state) const;
//@}
private:
class KeyMapping {
public:
KeyMapping();
public:
// KeyCode to generate keysym and whether keycode[i] is
// sensitive to shift and mode switch.
KeyCode m_keycode[4];
bool m_shiftSensitive[4];
bool m_modeSwitchSensitive[4];
// the modifier mask of keysym or 0 if not a modifier
KeyModifierMask m_modifierMask;
// whether keysym is sensitive to caps and num lock
bool m_numLockSensitive;
bool m_capsLockSensitive;
};
typedef std::map<KeySym, KeyMapping> KeySymMap;
typedef KeySymMap::const_iterator KeySymIndex;
// save the current keyboard mapping and note the currently
// pressed keys in \c keyState.
void updateKeysymMap(Display* display, IKeyState* keyState);
// note interesting modifier KeySyms
void updateModifiers();
// map a modifier index and its KeySym to a modifier mask. also
// save the modifier mask in one of m_*Mask.
KeyModifierMask mapToModifierMask(unsigned int, KeySym);
// convert a KeyID to a KeySym
KeySym keyIDToKeySym(KeyID id, KeyModifierMask mask) const;
// map a KeySym into the keystrokes to produce it
KeyButton mapToKeystrokes(IKeyState::Keystrokes& keys,
const IKeyState& keyState,
KeySymIndex keyIndex,
bool isAutoRepeat) const;
// choose the best set of modifiers to generate the KeySym
unsigned int findBestKeyIndex(KeySymIndex keyIndex,
KeyModifierMask currentMask) const;
// returns true if the sense of shift is inverted for KeySym
bool isShiftInverted(KeySymIndex keyIndex,
KeyModifierMask currentMask) const;
// returns the keystrokes to adjust the modifiers into the desired
// state the keystrokes to get back to the current state.
bool adjustModifiers(IKeyState::Keystrokes& keys,
IKeyState::Keystrokes& undo,
const IKeyState& keyState,
KeyModifierMask desiredMask) const;
// returns true if keysym is sensitive to the NumLock state
bool isNumLockSensitive(KeySym keysym) const;
// returns true if keysym is sensitive to the CapsLock state
bool isCapsLockSensitive(KeySym keysym) const;
private:
// keysym to keycode mapping
KeySymMap m_keysymMap;
// the keyboard control state the last time this screen was entered
XKeyboardState m_keyControl;
// modifier keysyms
KeySym m_modeSwitchKeysym;
// modifier masks
unsigned int m_altMask;
unsigned int m_metaMask;
unsigned int m_superMask;
unsigned int m_modeSwitchMask;
unsigned int m_numLockMask;
unsigned int m_scrollLockMask;
};
#endif