sinput.cxx.svn-base

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/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
 * 
 * This 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 software 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 software; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
 * USA.
 */

// -=- SInput.cxx
//
// A number of routines that accept VNC input event data and perform
// the appropriate actions under Win32

#define XK_MISCELLANY
#define XK_LATIN1
#define XK_CURRENCY
#include <rfb/keysymdef.h>

#include <tchar.h>
#include <rfb_wince/SInput.h>
#include <rfb_wince/MonitorInfo.h>
#include <rfb_wince/Service.h>
#include <rfb_wince/OSVersion.h>
#include <rfb_wince/DynamicFn.h>
#include <rfb_wince/keymap.h>
#include <rdr/Exception.h>
#include <rfb/LogWriter.h>

#if(defined(INPUT_MOUSE) && defined(RFB_HAVE_MONITORINFO))
#define RFB_HAVE_SENDINPUT
#else
#pragma message("  NOTE: Not building SendInput support.")
#endif

using namespace rfb;

static LogWriter vlog("SInput");

#ifdef RFB_HAVE_SENDINPUT
typedef UINT (WINAPI *_SendInput_proto)(UINT, LPINPUT, int);
static win32::DynamicFn<_SendInput_proto> _SendInput(_T("user32.dll"), "SendInput");
#endif

//
// -=- Pointer implementation for Win32
//

static DWORD buttonDownMapping[8] = {
  MOUSEEVENTF_LEFTDOWN, MOUSEEVENTF_MIDDLEDOWN, MOUSEEVENTF_RIGHTDOWN,
  MOUSEEVENTF_WHEEL, MOUSEEVENTF_WHEEL, 0, 0, 0
};

static DWORD buttonUpMapping[8] = {
  MOUSEEVENTF_LEFTUP, MOUSEEVENTF_MIDDLEUP, MOUSEEVENTF_RIGHTUP,
  MOUSEEVENTF_WHEEL, MOUSEEVENTF_WHEEL, 0, 0, 0
};

static DWORD buttonDataMapping[8] = {
  0, 0, 0, 120, -120, 0, 0, 0
};

win32::SPointer::SPointer()
  : last_buttonmask(0)
{
}

void
win32::SPointer::pointerEvent(const Point& pos, int buttonmask)
{
  // - We are specifying absolute coordinates
  DWORD flags = MOUSEEVENTF_ABSOLUTE;

  // - Has the pointer moved since the last event?
  if (!last_position.equals(pos))
    flags |= MOUSEEVENTF_MOVE;

  // - If the system swaps left and right mouse buttons then we must
  //   swap them here to negate the effect, so that we do the actual
  //   action we mean to do
/* Peica Cut
  if (::GetSystemMetrics(SM_SWAPBUTTON)) {
    bool leftDown = buttonmask & 1;
    bool rightDown = buttonmask & 4;
    buttonmask = (buttonmask & ~(1 | 4));
    if (leftDown) buttonmask |= 4;
    if (rightDown) buttonmask |= 1;
  }
*/
  DWORD data = 0;
  for (int i = 0; i < 8; i++) {
    if ((buttonmask & (1<<i)) != (last_buttonmask & (1<<i))) {
      if (buttonmask & (1<<i)) {
        flags |= buttonDownMapping[i];
        if (buttonDataMapping[i]) {
          if (data) vlog.info("warning - two buttons set mouse_event data field");
          data = buttonDataMapping[i];
        }
      } else {
        flags |= buttonUpMapping[i];
      }
    }
  }

  last_position = pos;
  last_buttonmask = buttonmask;

  Rect primaryDisplay(0,0,GetSystemMetrics(SM_CXSCREEN),GetSystemMetrics(SM_CYSCREEN));
  if (primaryDisplay.contains(pos)) {
    // mouse_event wants coordinates specified as a proportion of the
    // primary display's size, scaled to the range 0 to 65535
    Point scaled;
    scaled.x = (pos.x * 65535) / (primaryDisplay.width()-1);
    scaled.y = (pos.y * 65535) / (primaryDisplay.height()-1);
    ::mouse_event(flags, scaled.x, scaled.y, data, 0);
  } else {
    // The event lies outside the primary monitor.  Under Win2K, we can just use
    // SendInput, which allows us to provide coordinates scaled to the virtual desktop.
    // SendInput is available on all multi-monitor-aware platforms.
#ifdef RFB_HAVE_SENDINPUT
    if (osVersion.isPlatformNT) {
      if (!_SendInput.isValid())
        throw rdr::Exception("SendInput not available");
      INPUT evt;
      evt.type = INPUT_MOUSE;
      Point vPos(pos.x-GetSystemMetrics(SM_XVIRTUALSCREEN),
                 pos.y-GetSystemMetrics(SM_YVIRTUALSCREEN));
      evt.mi.dx = (vPos.x * 65535) / (GetSystemMetrics(SM_CXVIRTUALSCREEN)-1);
      evt.mi.dy = (vPos.y * 65535) / (GetSystemMetrics(SM_CYVIRTUALSCREEN)-1);
      evt.mi.dwFlags = flags | MOUSEEVENTF_VIRTUALDESK;
      evt.mi.dwExtraInfo = 0;
      evt.mi.mouseData = data;
      evt.mi.time = 0;
      if ((*_SendInput)(1, &evt, sizeof(evt)) != 1)
        throw rdr::SystemException("SendInput", GetLastError());
    } else {
      // Under Win9x, this is not addressable by either mouse_event or SendInput
      // *** STUPID KLUDGY HACK ***
      POINT cursorPos; GetCursorPos(&cursorPos);
      ULONG oldSpeed, newSpeed = 10;
      ULONG mouseInfo[3];
      if (flags & MOUSEEVENTF_MOVE) {
        flags &= ~MOUSEEVENTF_ABSOLUTE;
        SystemParametersInfo(SPI_GETMOUSE, 0, &mouseInfo, 0);
        SystemParametersInfo(SPI_GETMOUSESPEED, 0, &oldSpeed, 0);
        vlog.debug("SPI_GETMOUSE %d, %d, %d, speed %d", mouseInfo[0], mouseInfo[1], mouseInfo[2], oldSpeed);
        ULONG idealMouseInfo[] = {10, 0, 0};
        SystemParametersInfo(SPI_SETMOUSESPEED, 0, &newSpeed, 0);
        SystemParametersInfo(SPI_SETMOUSE, 0, &idealMouseInfo, 0);
      }
      ::mouse_event(flags, pos.x-cursorPos.x, pos.y-cursorPos.y, data, 0);
      if (flags & MOUSEEVENTF_MOVE) {
        SystemParametersInfo(SPI_SETMOUSE, 0, &mouseInfo, 0);
        SystemParametersInfo(SPI_SETMOUSESPEED, 0, &oldSpeed, 0);
      }
    }
#endif
  }
}

//
// -=- Keyboard implementation
//


BoolParameter rfb::win32::SKeyboard::deadKeyAware("DeadKeyAware",
  "Whether to assume the viewer has already interpreted dead key sequences "
  "into latin-1 characters", true);

static bool oneShift;

// The keysymToAscii table transforms a couple of awkward keysyms into their
// ASCII equivalents.
struct  keysymToAscii_t {
  rdr::U32 keysym;
  rdr::U8 ascii;
};

keysymToAscii_t keysymToAscii[] = {
  { XK_KP_Space, ' ' },
  { XK_KP_Equal, '=' },
};

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

struct latin1ToDeadChars_t {
  rdr::U8 latin1Char;
  rdr::U8 deadChar;
  rdr::U8 baseChar;
};

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 },