vnckeymap.cpp

teamviewer source code vc++

//  Copyright (C) 2002 RealVNC Ltd. All Rights Reserved.
//  Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved.
//
//  This file is part of TeamViewer.
//
//  TeamViewer 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
//  USA.
//
//  If the source code for the program is not available from the place from
//  which you received this file, check http://www.teamviewer.com
//  for information on obtaining it.

// vncKeymap.cpp

// This code originally just mapped between X keysyms and local Windows
// virtual keycodes.  Now it actually does the local-end simulation of
// key presses, to keep this messy code on one place!

#include "stdhdrs.h"

#pragma warning(disable : 4786)
#include "vncKeymap.h"
#define XK_MISCELLANY
#define XK_LATIN1
#define XK_CURRENCY
#define XK_GREEK
#define XK_TECHNICAL
#define XK_XKB_KEYS
#include "keysymdef.h"
#include "vncService.h"

// Mapping of X keysyms to windows VK codes.  Ordering here is the same as
// keysymdef.h to make checking easier
rdr::U32 keysymDead=0;

struct keymap_t {
  rdr::U32 keysym;
  rdr::U8 vk;
  bool extended;
};

std::vector<unsigned char> deadChars;

static keymap_t keymap[] = {

  // TTY functions

  { XK_BackSpace,        VK_BACK, 0 },
  { XK_Tab,              VK_TAB, 0 },
  { XK_Clear,            VK_CLEAR, 0 },
  { XK_Return,           VK_RETURN, 0 },
  { XK_Pause,            VK_PAUSE, 0 },
  { XK_Escape,           VK_ESCAPE, 0 },
  { XK_Delete,           VK_DELETE, 1 },

  // Japanese stuff - almost certainly wrong...
  { XK_Kanji,            VK_KANJI, 0 },
  { XK_Kana_Shift,       VK_KANA, 0 },

  // Cursor control & motion

  { XK_Home,             VK_HOME, 1 },
  { XK_Left,             VK_LEFT, 1 },
  { XK_Up,               VK_UP, 1 },
  { XK_Right,            VK_RIGHT, 1 },
  { XK_Down,             VK_DOWN, 1 },
  { XK_Page_Up,          VK_PRIOR, 1 },
  { XK_Page_Down,        VK_NEXT, 1 },
  { XK_End,              VK_END, 1 },

  // Misc functions

  { XK_Select,           VK_SELECT, 0 },
  { XK_Print,            VK_SNAPSHOT, 0 },
  { XK_Execute,          VK_EXECUTE, 0 },
  { XK_Insert,           VK_INSERT, 1 },
  { XK_Help,             VK_HELP, 0 },
  { XK_Break,            VK_CANCEL, 1 },

  // Keypad Functions, keypad numbers

  { XK_KP_Space,         VK_SPACE, 0 },
  { XK_KP_Tab,           VK_TAB, 0 },
  { XK_KP_Enter,         VK_RETURN, 1 },
  { XK_KP_F1,            VK_F1, 0 },
  { XK_KP_F2,            VK_F2, 0 },
  { XK_KP_F3,            VK_F3, 0 },
  { XK_KP_F4,            VK_F4, 0 },
  { XK_KP_Home,          VK_HOME, 0 },
  { XK_KP_Left,          VK_LEFT, 0 },
  { XK_KP_Up,            VK_UP, 0 },
  { XK_KP_Right,         VK_RIGHT, 0 },
  { XK_KP_Down,          VK_DOWN, 0 },
  { XK_KP_End,           VK_END, 0 },
  { XK_KP_Page_Up,       VK_PRIOR, 0 },
  { XK_KP_Page_Down,     VK_NEXT, 0 },
  { XK_KP_Begin,         VK_CLEAR, 0 },
  { XK_KP_Insert,        VK_INSERT, 0 },
  { XK_KP_Delete,        VK_DELETE, 0 },
  // XXX XK_KP_Equal should map in the same way as ascii '='
  { XK_KP_Multiply,      VK_MULTIPLY, 0 },
  { XK_KP_Add,           VK_ADD, 0 },
  { XK_KP_Separator,     VK_SEPARATOR, 0 },
  { XK_KP_Subtract,      VK_SUBTRACT, 0 },
  { XK_KP_Decimal,       VK_DECIMAL, 0 },
  { XK_KP_Divide,        VK_DIVIDE, 1 },

  { XK_KP_0,             VK_NUMPAD0, 0 },
  { XK_KP_1,             VK_NUMPAD1, 0 },
  { XK_KP_2,             VK_NUMPAD2, 0 },
  { XK_KP_3,             VK_NUMPAD3, 0 },
  { XK_KP_4,             VK_NUMPAD4, 0 },
  { XK_KP_5,             VK_NUMPAD5, 0 },
  { XK_KP_6,             VK_NUMPAD6, 0 },
  { XK_KP_7,             VK_NUMPAD7, 0 },
  { XK_KP_8,             VK_NUMPAD8, 0 },
  { XK_KP_9,             VK_NUMPAD9, 0 },

  // Auxilliary Functions

  { XK_F1,               VK_F1, 0 },
  { XK_F2,               VK_F2, 0 },
  { XK_F3,               VK_F3, 0 },
  { XK_F4,               VK_F4, 0 },
  { XK_F5,               VK_F5, 0 },
  { XK_F6,               VK_F6, 0 },
  { XK_F7,               VK_F7, 0 },
  { XK_F8,               VK_F8, 0 },
  { XK_F9,               VK_F9, 0 },
  { XK_F10,              VK_F10, 0 },
  { XK_F11,              VK_F11, 0 },
  { XK_F12,              VK_F12, 0 },
  { XK_F13,              VK_F13, 0 },
  { XK_F14,              VK_F14, 0 },
  { XK_F15,              VK_F15, 0 },
  { XK_F16,              VK_F16, 0 },
  { XK_F17,              VK_F17, 0 },
  { XK_F18,              VK_F18, 0 },
  { XK_F19,              VK_F19, 0 },
  { XK_F20,              VK_F20, 0 },
  { XK_F21,              VK_F21, 0 },
  { XK_F22,              VK_F22, 0 },
  { XK_F23,              VK_F23, 0 },
  { XK_F24,              VK_F24, 0 },

    // Modifiers
    
  { XK_Shift_L,          VK_SHIFT, 0 },
  { XK_Shift_R,          VK_RSHIFT, 0 },
  { XK_Control_L,        VK_CONTROL, 0 },
  { XK_Control_R,        VK_CONTROL, 1 },
  { XK_Alt_L,            VK_MENU, 0 },
  { XK_Alt_R,            VK_RMENU, 1 },

// Left & Right Windows keys & Windows Menu Key

  { XK_Super_L,			VK_LWIN, 0 }, 
  { XK_Super_R,			VK_RWIN, 0 }, 
  { XK_Menu,			VK_APPS, 0 }, 

};

struct latin1ToDeadChars_t {
  rdr::U8 latin1Char;
  rdr::U8 deadChar;
  rdr::U8 baseChar;
  int a,b,c;
};

latin1ToDeadChars_t latin1ToDeadChars[] = {

  { XK_Agrave, XK_grave, XK_A },
  { XK_Egrave, XK_grave, XK_E },
  { XK_Igrave, XK_grave, XK_I },
  { XK_Ograve, XK_grave, XK_O },
  { XK_Ugrave, XK_grave, XK_U },
  { XK_agrave, XK_grave, XK_a },
  { XK_egrave, XK_grave, XK_e },
  { XK_igrave, XK_grave, XK_i },
  { XK_ograve, XK_grave, XK_o},
  { XK_ugrave, XK_grave, XK_u },

  { XK_Aacute, XK_acute, XK_A },
  { XK_Eacute, XK_acute, XK_E },
  { XK_Iacute, XK_acute, XK_I },
  { XK_Oacute, XK_acute, XK_O },
  { XK_Uacute, XK_acute, XK_U },
  { XK_Yacute, XK_acute, XK_Y },
  { XK_aacute, XK_acute, XK_a },
  { XK_eacute, XK_acute, XK_e },
  { XK_iacute, XK_acute, XK_i },
  { XK_oacute, XK_acute, XK_o},
  { XK_uacute, XK_acute, XK_u },
  { XK_yacute, XK_acute, XK_y },

  { XK_Acircumflex, XK_asciicircum, XK_A },
  { XK_Ecircumflex, XK_asciicircum, XK_E },
  { XK_Icircumflex, XK_asciicircum, XK_I },
  { XK_Ocircumflex, XK_asciicircum, XK_O },
  { XK_Ucircumflex, XK_asciicircum, XK_U },
  { XK_acircumflex, XK_asciicircum, XK_a },
  { XK_ecircumflex, XK_asciicircum, XK_e },
  { XK_icircumflex, XK_asciicircum, XK_i },
  { XK_ocircumflex, XK_asciicircum, XK_o},
  { XK_ucircumflex, XK_asciicircum, XK_u },

  { XK_Adiaeresis, XK_diaeresis, XK_A },
  { XK_Ediaeresis, XK_diaeresis, XK_E },
  { XK_Idiaeresis, XK_diaeresis, XK_I },
  { XK_Odiaeresis, XK_diaeresis, XK_O },
  { XK_Udiaeresis, XK_diaeresis, XK_U },
  { XK_adiaeresis, XK_diaeresis, XK_a },
  { XK_ediaeresis, XK_diaeresis, XK_e },
  { XK_idiaeresis, XK_diaeresis, XK_i },
  { XK_odiaeresis, XK_diaeresis, XK_o},
  { XK_udiaeresis, XK_diaeresis, XK_u },
  { XK_ydiaeresis, XK_diaeresis, XK_y },

  { XK_Aring, XK_degree, XK_A },
  { XK_aring, XK_degree, XK_a },

  { XK_Ccedilla, XK_cedilla, XK_C },
  { XK_ccedilla, XK_cedilla, XK_c },

  { XK_Atilde, XK_asciitilde, XK_A },
  { XK_Ntilde, XK_asciitilde, XK_N },
  { XK_Otilde, XK_asciitilde, XK_O },
  { XK_atilde, XK_asciitilde, XK_a },
  { XK_ntilde, XK_asciitilde, XK_n },
  { XK_otilde, XK_asciitilde, XK_o },
};

rdr::U8 latin1DeadChars[] = {
  XK_grave, XK_acute, XK_asciicircum, XK_diaeresis, XK_degree, XK_cedilla,
  XK_asciitilde, XK_apostrophe, XK_quotedbl
};

#define NoSymbol 0xfff
rdr::U16 ascii_to_x[256] = {
	NoSymbol,	NoSymbol,	NoSymbol,	XK_KP_Enter,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	XK_Delete,	XK_Tab,		XK_Linefeed,	NoSymbol,
	NoSymbol,	XK_Return,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	XK_Escape,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	XK_space,	XK_exclam,	XK_quotedbl,	XK_numbersign,
	XK_dollar,	XK_percent,	XK_ampersand,	XK_apostrophe,
	XK_parenleft,	XK_parenright,	XK_asterisk,	XK_plus,
	XK_comma,	XK_minus,	XK_period,	XK_slash,
	XK_0,		XK_1,		XK_2,		XK_3,
	XK_4,		XK_5,		XK_6,		XK_7,
	XK_8,		XK_9,		XK_colon,	XK_semicolon,
	XK_less,	XK_equal,	XK_greater,	XK_question,
	XK_at,		XK_A,		XK_B,		XK_C,
	XK_D,		XK_E,		XK_F,		XK_G,
	XK_H,		XK_I,		XK_J,		XK_K,
	XK_L,		XK_M,		XK_N,		XK_O,
	XK_P,		XK_Q,		XK_R,		XK_S,
	XK_T,		XK_U,		XK_V,		XK_W,
	XK_X,		XK_Y,		XK_Z,		XK_bracketleft,
	XK_backslash,	XK_bracketright,XK_asciicircum,	XK_underscore,
	XK_grave,	XK_a,		XK_b,		XK_c,
	XK_d,		XK_e,		XK_f,		XK_g,
	XK_h,		XK_i,		XK_j,		XK_k,
	XK_l,		XK_m,		XK_n,		XK_o,
	XK_p,		XK_q,		XK_r,		XK_s,
	XK_t,		XK_u,		XK_v,		XK_w,
	XK_x,		XK_y,		XK_z,		XK_braceleft,
	XK_bar,		XK_braceright,	XK_asciitilde,	XK_BackSpace,
// 128
	XK_Ccedilla,	XK_udiaeresis,	XK_eacute,	XK_acircumflex,
	XK_adiaeresis,	XK_agrave,	XK_aring,	XK_ccedilla,
	XK_ecircumflex,	XK_ediaeresis,	XK_egrave,	XK_idiaeresis,
	XK_icircumflex,	XK_igrave,	XK_Adiaeresis,	XK_Aring,
	XK_Eacute,	XK_ae,		XK_AE,		XK_ocircumflex,
	XK_odiaeresis,	XK_ograve,	XK_ntilde,	XK_ugrave,
	XK_ydiaeresis,	XK_Odiaeresis,	XK_Udiaeresis,	XK_cent,
	XK_sterling,	XK_yen,		XK_paragraph,	XK_section,
// 160
	XK_aacute,	XK_degree,	XK_cent,	XK_sterling,
	XK_ntilde,	XK_Ntilde,	XK_paragraph,	XK_Greek_BETA,
	XK_questiondown,XK_hyphen,	XK_notsign,	XK_onehalf,
	XK_onequarter,	XK_exclamdown,	XK_guillemotleft,XK_guillemotright,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
// 192
	XK_questiondown,XK_exclamdown,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	XK_Agrave,
	NoSymbol,	NoSymbol,	XK_AE,		XK_ae,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
	NoSymbol,	NoSymbol,	NoSymbol,	NoSymbol,
// 224
	XK_Greek_alpha,	XK_ssharp,	XK_Greek_GAMMA,	XK_Greek_pi,
	XK_Greek_SIGMA,	XK_Greek_sigma,	XK_mu,	        XK_Greek_tau,
	XK_Greek_PHI,	XK_Greek_THETA,	XK_Greek_OMEGA,	XK_Greek_delta,
	XK_infinity,	XK_Ooblique,	XK_Greek_epsilon, XK_intersection,
	XK_identical,	XK_plusminus,	XK_greaterthanequal, XK_lessthanequal,
	XK_topintegral,	XK_botintegral,	XK_division,	XK_similarequal,
	XK_degree,	NoSymbol,	NoSymbol,	XK_radical,
	XK_Greek_eta,	XK_twosuperior,	XK_periodcentered, NoSymbol,
  };

// doKeyboardEvent wraps the system keybd_event function and attempts to find
// the appropriate scancode corresponding to the supplied virtual keycode.

inline void doKeyboardEvent(BYTE vkCode, DWORD flags) {
  keybd_event(vkCode, MapVirtualKey(vkCode, 0), flags, 0);
}

// KeyStateModifier is a class which helps simplify generating a "fake" press
// or release of shift, ctrl, alt, etc.  An instance of the class is created
// for every key which may need to be pressed or released.  Then either press()
// or release() may be called to make sure that the corresponding key is in the
// right state.  The destructor of the class automatically reverts to the
// previous state.

class KeyStateModifier {
public:
  KeyStateModifier(int vkCode_, int flags_=0)
    : vkCode(vkCode_), flags(flags_), pressed(false), released(false)
  {}
  void press() {
    if (!(GetAsyncKeyState(vkCode) & 0x8000)) {
      doKeyboardEvent(vkCode, flags);
      vnclog.Print(LL_INTINFO, VNCLOG("fake %d down"), vkCode);
      pressed = true;
    }
  }
  void release() {
    if (GetAsyncKeyState(vkCode) & 0x8000) {
      doKeyboardEvent(vkCode, flags | KEYEVENTF_KEYUP);
      vnclog.Print(LL_INTINFO, VNCLOG("fake %d up"), vkCode);
      released = true;
    }
  }
  ~KeyStateModifier() {
    if (pressed) {
      doKeyboardEvent(vkCode, flags | KEYEVENTF_KEYUP);
      vnclog.Print(LL_INTINFO, VNCLOG("fake %d up"), vkCode);
    } else if (released) {
      doKeyboardEvent(vkCode, flags);
      vnclog.Print(LL_INTINFO, VNCLOG("fake %d down"), vkCode);
    }
  }
  int vkCode;
  int flags;
  bool pressed;
  bool released;
};

// Keymapper - a single instance of this class is used to generate Windows key
// events.
void doKeyEventWithModifiers(BYTE vkCode, BYTE modifierState, bool down)
{
  KeyStateModifier ctrl(VK_CONTROL);
  KeyStateModifier alt(VK_MENU);
  KeyStateModifier shift(VK_SHIFT);

  if (down) {
    if (modifierState & 2) ctrl.press();
    if (modifierState & 4) alt.press();
    if (modifierState & 1) {
      shift.press(); 
    } else {
      shift.release();
    }
  }
  doKeyboardEvent(vkCode, down ? 0 : KEYEVENTF_KEYUP);
}

class Keymapper {

public:
	Keymapper()
	{