mirror of
https://github.com/TigerVNC/tigervnc.git
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47ed8d321c
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@2 3789f03b-4d11-0410-bbf8-ca57d06f2519
460 lines
15 KiB
C++
460 lines
15 KiB
C++
/* Copyright (C) 2002-2003 RealVNC Ltd. All Rights Reserved.
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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// -=- SInput.cxx
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//
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// A number of routines that accept VNC input event data and perform
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// the appropriate actions under Win32
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#define XK_MISCELLANY
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#define XK_LATIN1
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#define XK_CURRENCY
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#include <rfb/keysymdef.h>
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// * Force the windows headers to include all the SendInput stuff
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#define _WIN32_WINNT 0x401
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#include <rfb_win32/SInput.h>
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#include <rfb_win32/Service.h>
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#include <rfb/LogWriter.h>
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#include <rfb_win32/OSVersion.h>
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#include <rfb_win32/Win32Util.h>
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#include "keymap.h"
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using namespace rfb;
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static LogWriter vlog("SInput");
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typedef UINT (WINAPI *_SendInput_proto)(UINT, LPINPUT, int);
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static win32::DynamicFn<_SendInput_proto> _SendInput(_T("user32.dll"), "SendInput");
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//
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// -=- Pointer implementation for Win32
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//
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static DWORD buttonDownMapping[8] = {
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MOUSEEVENTF_LEFTDOWN, MOUSEEVENTF_MIDDLEDOWN, MOUSEEVENTF_RIGHTDOWN,
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MOUSEEVENTF_WHEEL, MOUSEEVENTF_WHEEL, 0, 0, 0
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};
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static DWORD buttonUpMapping[8] = {
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MOUSEEVENTF_LEFTUP, MOUSEEVENTF_MIDDLEUP, MOUSEEVENTF_RIGHTUP,
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MOUSEEVENTF_WHEEL, MOUSEEVENTF_WHEEL, 0, 0, 0
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};
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static DWORD buttonDataMapping[8] = {
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0, 0, 0, 120, -120, 0, 0, 0
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};
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win32::SPointer::SPointer()
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: last_buttonmask(0)
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{
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}
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void
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win32::SPointer::pointerEvent(const Point& pos, rdr::U8 buttonmask)
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{
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// - We are specifying absolute coordinates
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DWORD flags = MOUSEEVENTF_ABSOLUTE;
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// - Has the pointer moved since the last event?
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if (!last_position.equals(pos))
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flags |= MOUSEEVENTF_MOVE;
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// - If the system swaps left and right mouse buttons then we must
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// swap them here to negate the effect, so that we do the actual
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// action we mean to do
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if (::GetSystemMetrics(SM_SWAPBUTTON)) {
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bool leftDown = buttonmask & 1;
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bool rightDown = buttonmask & 4;
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buttonmask = (buttonmask & ~(1 | 4));
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if (leftDown) buttonmask |= 4;
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if (rightDown) buttonmask |= 1;
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}
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DWORD data = 0;
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for (int i = 0; i < 8; i++) {
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if ((buttonmask & (1<<i)) != (last_buttonmask & (1<<i))) {
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if (buttonmask & (1<<i)) {
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flags |= buttonDownMapping[i];
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if (buttonDataMapping[i]) {
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if (data) vlog.info("warning - two buttons set mouse_event data field");
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data = buttonDataMapping[i];
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}
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} else {
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flags |= buttonUpMapping[i];
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}
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}
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}
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last_position = pos;
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last_buttonmask = buttonmask;
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Rect primaryDisplay(0,0,GetSystemMetrics(SM_CXSCREEN),GetSystemMetrics(SM_CYSCREEN));
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if (primaryDisplay.contains(pos)) {
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// mouse_event wants coordinates specified as a proportion of the
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// primary display's size, scaled to the range 0 to 65535
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Point scaled;
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scaled.x = (pos.x * 65535) / (primaryDisplay.width()-1);
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scaled.y = (pos.y * 65535) / (primaryDisplay.height()-1);
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::mouse_event(flags, scaled.x, scaled.y, data, 0);
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} else {
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// The event lies outside the primary monitor. Under Win2K, we can just use
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// SendInput, which allows us to provide coordinates scaled to the virtual desktop.
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// SendInput is available on all multi-monitor-aware platforms.
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#ifdef SM_CXVIRTUALSCREEN
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if (osVersion.isPlatformNT) {
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if (!_SendInput.isValid())
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throw rdr::Exception("SendInput not available");
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INPUT evt;
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evt.type = INPUT_MOUSE;
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Point vPos(pos.x-GetSystemMetrics(SM_XVIRTUALSCREEN),
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pos.y-GetSystemMetrics(SM_YVIRTUALSCREEN));
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evt.mi.dx = (vPos.x * 65535) / (GetSystemMetrics(SM_CXVIRTUALSCREEN)-1);
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evt.mi.dy = (vPos.y * 65535) / (GetSystemMetrics(SM_CYVIRTUALSCREEN)-1);
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evt.mi.dwFlags = flags | MOUSEEVENTF_VIRTUALDESK;
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evt.mi.dwExtraInfo = 0;
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evt.mi.mouseData = data;
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evt.mi.time = 0;
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if ((*_SendInput)(1, &evt, sizeof(evt)) != 1)
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throw rdr::SystemException("SendInput", GetLastError());
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} else {
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// Under Win9x, this is not addressable by either mouse_event or SendInput
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// *** STUPID KLUDGY HACK ***
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POINT cursorPos; GetCursorPos(&cursorPos);
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ULONG oldSpeed, newSpeed = 10;
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ULONG mouseInfo[3];
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if (flags & MOUSEEVENTF_MOVE) {
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flags &= ~MOUSEEVENTF_ABSOLUTE;
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SystemParametersInfo(SPI_GETMOUSE, 0, &mouseInfo, 0);
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SystemParametersInfo(SPI_GETMOUSESPEED, 0, &oldSpeed, 0);
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vlog.debug("SPI_GETMOUSE %d, %d, %d, speed %d", mouseInfo[0], mouseInfo[1], mouseInfo[2], oldSpeed);
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ULONG idealMouseInfo[] = {10, 0, 0};
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SystemParametersInfo(SPI_SETMOUSESPEED, 0, &newSpeed, 0);
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SystemParametersInfo(SPI_SETMOUSE, 0, &idealMouseInfo, 0);
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}
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::mouse_event(flags, pos.x-cursorPos.x, pos.y-cursorPos.y, data, 0);
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if (flags & MOUSEEVENTF_MOVE) {
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SystemParametersInfo(SPI_SETMOUSE, 0, &mouseInfo, 0);
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SystemParametersInfo(SPI_SETMOUSESPEED, 0, &oldSpeed, 0);
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}
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}
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#endif
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}
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}
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//
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// -=- Keyboard implementation
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//
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BoolParameter rfb::win32::SKeyboard::deadKeyAware("DeadKeyAware",
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"Whether to assume the viewer has already interpreted dead key sequences "
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"into latin-1 characters", true);
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static bool oneShift;
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// The keysymToAscii table transforms a couple of awkward keysyms into their
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// ASCII equivalents.
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struct keysymToAscii_t {
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rdr::U32 keysym;
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rdr::U8 ascii;
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};
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keysymToAscii_t keysymToAscii[] = {
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{ XK_KP_Space, ' ' },
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{ XK_KP_Equal, '=' },
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};
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rdr::U8 latin1DeadChars[] = {
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XK_grave, XK_acute, XK_asciicircum, XK_diaeresis, XK_degree, XK_cedilla,
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XK_asciitilde
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};
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struct latin1ToDeadChars_t {
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rdr::U8 latin1Char;
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rdr::U8 deadChar;
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rdr::U8 baseChar;
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};
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latin1ToDeadChars_t latin1ToDeadChars[] = {
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{ XK_Agrave, XK_grave, XK_A },
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{ XK_Egrave, XK_grave, XK_E },
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{ XK_Igrave, XK_grave, XK_I },
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{ XK_Ograve, XK_grave, XK_O },
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{ XK_Ugrave, XK_grave, XK_U },
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{ XK_agrave, XK_grave, XK_a },
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{ XK_egrave, XK_grave, XK_e },
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{ XK_igrave, XK_grave, XK_i },
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{ XK_ograve, XK_grave, XK_o},
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{ XK_ugrave, XK_grave, XK_u },
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{ XK_Aacute, XK_acute, XK_A },
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{ XK_Eacute, XK_acute, XK_E },
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{ XK_Iacute, XK_acute, XK_I },
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{ XK_Oacute, XK_acute, XK_O },
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{ XK_Uacute, XK_acute, XK_U },
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{ XK_Yacute, XK_acute, XK_Y },
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{ XK_aacute, XK_acute, XK_a },
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{ XK_eacute, XK_acute, XK_e },
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{ XK_iacute, XK_acute, XK_i },
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{ XK_oacute, XK_acute, XK_o},
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{ XK_uacute, XK_acute, XK_u },
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{ XK_yacute, XK_acute, XK_y },
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{ XK_Acircumflex, XK_asciicircum, XK_A },
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{ XK_Ecircumflex, XK_asciicircum, XK_E },
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{ XK_Icircumflex, XK_asciicircum, XK_I },
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{ XK_Ocircumflex, XK_asciicircum, XK_O },
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{ XK_Ucircumflex, XK_asciicircum, XK_U },
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{ XK_acircumflex, XK_asciicircum, XK_a },
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{ XK_ecircumflex, XK_asciicircum, XK_e },
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{ XK_icircumflex, XK_asciicircum, XK_i },
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{ XK_ocircumflex, XK_asciicircum, XK_o},
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{ XK_ucircumflex, XK_asciicircum, XK_u },
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{ XK_Adiaeresis, XK_diaeresis, XK_A },
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{ XK_Ediaeresis, XK_diaeresis, XK_E },
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{ XK_Idiaeresis, XK_diaeresis, XK_I },
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{ XK_Odiaeresis, XK_diaeresis, XK_O },
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{ XK_Udiaeresis, XK_diaeresis, XK_U },
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{ XK_adiaeresis, XK_diaeresis, XK_a },
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{ XK_ediaeresis, XK_diaeresis, XK_e },
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{ XK_idiaeresis, XK_diaeresis, XK_i },
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{ XK_odiaeresis, XK_diaeresis, XK_o},
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{ XK_udiaeresis, XK_diaeresis, XK_u },
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{ XK_ydiaeresis, XK_diaeresis, XK_y },
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{ XK_Aring, XK_degree, XK_A },
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{ XK_aring, XK_degree, XK_a },
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{ XK_Ccedilla, XK_cedilla, XK_C },
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{ XK_ccedilla, XK_cedilla, XK_c },
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{ XK_Atilde, XK_asciitilde, XK_A },
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{ XK_Ntilde, XK_asciitilde, XK_N },
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{ XK_Otilde, XK_asciitilde, XK_O },
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{ XK_atilde, XK_asciitilde, XK_a },
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{ XK_ntilde, XK_asciitilde, XK_n },
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{ XK_otilde, XK_asciitilde, XK_o },
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};
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// doKeyboardEvent wraps the system keybd_event function and attempts to find
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// the appropriate scancode corresponding to the supplied virtual keycode.
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inline void doKeyboardEvent(BYTE vkCode, DWORD flags) {
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vlog.debug("vkCode 0x%x flags 0x%x", vkCode, flags);
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keybd_event(vkCode, MapVirtualKey(vkCode, 0), flags, 0);
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}
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// KeyStateModifier is a class which helps simplify generating a "fake" press
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// or release of shift, ctrl, alt, etc. An instance of the class is created
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// for every key which may need to be pressed or released. Then either press()
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// or release() may be called to make sure that the corresponding key is in the
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// right state. The destructor of the class automatically reverts to the
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// previous state.
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class KeyStateModifier {
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public:
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KeyStateModifier(int vkCode_, int flags_=0)
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: vkCode(vkCode_), flags(flags_), pressed(false), released(false)
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{}
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void press() {
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if (!(GetAsyncKeyState(vkCode) & 0x8000)) {
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doKeyboardEvent(vkCode, flags);
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pressed = true;
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}
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}
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void release() {
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if (GetAsyncKeyState(vkCode) & 0x8000) {
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doKeyboardEvent(vkCode, flags | KEYEVENTF_KEYUP);
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released = true;
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}
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}
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~KeyStateModifier() {
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if (pressed) {
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doKeyboardEvent(vkCode, flags | KEYEVENTF_KEYUP);
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} else if (released) {
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doKeyboardEvent(vkCode, flags);
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}
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}
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int vkCode;
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int flags;
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bool pressed;
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bool released;
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};
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// doKeyEventWithModifiers() generates a key event having first "pressed" or
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// "released" the shift, ctrl or alt modifiers if necessary.
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void doKeyEventWithModifiers(BYTE vkCode, BYTE modifierState, bool down)
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{
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KeyStateModifier ctrl(VK_CONTROL);
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KeyStateModifier alt(VK_MENU);
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KeyStateModifier shift(VK_SHIFT);
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if (down) {
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if (modifierState & 2) ctrl.press();
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if (modifierState & 4) alt.press();
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if (modifierState & 1) {
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shift.press();
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} else {
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shift.release();
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}
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}
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doKeyboardEvent(vkCode, down ? 0 : KEYEVENTF_KEYUP);
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}
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win32::SKeyboard::SKeyboard()
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{
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oneShift = rfb::win32::osVersion.isPlatformWindows;
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for (int i = 0; i < sizeof(keymap) / sizeof(keymap_t); i++) {
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vkMap[keymap[i].keysym] = keymap[i].vk;
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extendedMap[keymap[i].keysym] = keymap[i].extended;
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}
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// Find dead characters for the current keyboard layout
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// XXX how could we handle the keyboard layout changing?
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BYTE keystate[256];
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memset(keystate, 0, 256);
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for (int j = 0; j < sizeof(latin1DeadChars); j++) {
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SHORT s = VkKeyScan(latin1DeadChars[j]);
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if (s != -1) {
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BYTE vkCode = LOBYTE(s);
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BYTE modifierState = HIBYTE(s);
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keystate[VK_SHIFT] = (modifierState & 1) ? 0x80 : 0;
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keystate[VK_CONTROL] = (modifierState & 2) ? 0x80 : 0;
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keystate[VK_MENU] = (modifierState & 4) ? 0x80 : 0;
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rdr::U8 chars[2];
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int nchars = ToAscii(vkCode, 0, keystate, (WORD*)&chars, 0);
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if (nchars < 0) {
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vlog.debug("Found dead key 0x%x '%c'",
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latin1DeadChars[j], latin1DeadChars[j]);
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deadChars.push_back(latin1DeadChars[j]);
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ToAscii(vkCode, 0, keystate, (WORD*)&chars, 0);
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}
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}
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}
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}
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void win32::SKeyboard::keyEvent(rdr::U32 keysym, bool down)
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{
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for (int i = 0; i < sizeof(keysymToAscii) / sizeof(keysymToAscii_t); i++) {
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if (keysymToAscii[i].keysym == keysym) {
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keysym = keysymToAscii[i].ascii;
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break;
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}
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}
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if ((keysym >= 32 && keysym <= 126) ||
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(keysym >= 160 && keysym <= 255))
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{
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// ordinary Latin-1 character
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if (deadKeyAware) {
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// Detect dead chars and generate the dead char followed by space so
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// that we'll end up with the original char.
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for (int i = 0; i < deadChars.size(); i++) {
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if (keysym == deadChars[i]) {
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SHORT dc = VkKeyScan(keysym);
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if (dc != -1) {
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if (down) {
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vlog.info("latin-1 dead key: 0x%x vkCode 0x%x mod 0x%x "
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"followed by space", keysym, LOBYTE(dc), HIBYTE(dc));
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doKeyEventWithModifiers(LOBYTE(dc), HIBYTE(dc), true);
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doKeyEventWithModifiers(LOBYTE(dc), HIBYTE(dc), false);
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doKeyEventWithModifiers(VK_SPACE, 0, true);
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doKeyEventWithModifiers(VK_SPACE, 0, false);
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}
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return;
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}
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}
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}
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}
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SHORT s = VkKeyScan(keysym);
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if (s == -1) {
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if (down) {
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// not a single keypress - try synthesizing dead chars.
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for (int j = 0;
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j < sizeof(latin1ToDeadChars) / sizeof(latin1ToDeadChars_t);
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j++) {
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if (keysym == latin1ToDeadChars[j].latin1Char) {
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for (int i = 0; i < deadChars.size(); i++) {
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if (deadChars[i] == latin1ToDeadChars[j].deadChar) {
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SHORT dc = VkKeyScan(latin1ToDeadChars[j].deadChar);
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SHORT bc = VkKeyScan(latin1ToDeadChars[j].baseChar);
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if (dc != -1 && bc != -1) {
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vlog.info("latin-1 key: 0x%x dead key vkCode 0x%x mod 0x%x "
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"followed by vkCode 0x%x mod 0x%x",
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keysym, LOBYTE(dc), HIBYTE(dc),
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LOBYTE(bc), HIBYTE(bc));
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doKeyEventWithModifiers(LOBYTE(dc), HIBYTE(dc), true);
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doKeyEventWithModifiers(LOBYTE(dc), HIBYTE(dc), false);
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doKeyEventWithModifiers(LOBYTE(bc), HIBYTE(bc), true);
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doKeyEventWithModifiers(LOBYTE(bc), HIBYTE(bc), false);
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return;
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}
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break;
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}
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}
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break;
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}
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}
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vlog.info("ignoring unrecognised Latin-1 keysym 0x%x",keysym);
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}
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return;
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}
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BYTE vkCode = LOBYTE(s);
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BYTE modifierState = HIBYTE(s);
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vlog.debug("latin-1 key: 0x%x vkCode 0x%x mod 0x%x down %d",
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keysym, vkCode, modifierState, down);
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doKeyEventWithModifiers(vkCode, modifierState, down);
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} else {
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// see if it's a recognised keyboard key, otherwise ignore it
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if (vkMap.find(keysym) == vkMap.end()) {
|
|
vlog.info("ignoring unknown keysym 0x%x",keysym);
|
|
return;
|
|
}
|
|
BYTE vkCode = vkMap[keysym];
|
|
DWORD flags = 0;
|
|
if (extendedMap[keysym]) flags |= KEYEVENTF_EXTENDEDKEY;
|
|
if (!down) flags |= KEYEVENTF_KEYUP;
|
|
|
|
vlog.debug("keyboard key: keysym 0x%x vkCode 0x%x ext %d down %d",
|
|
keysym, vkCode, extendedMap[keysym], down);
|
|
if (down && (vkCode == VK_DELETE) &&
|
|
((GetAsyncKeyState(VK_CONTROL) & 0x8000) != 0) &&
|
|
((GetAsyncKeyState(VK_MENU) & 0x8000) != 0))
|
|
{
|
|
rfb::win32::emulateCtrlAltDel();
|
|
return;
|
|
}
|
|
|
|
doKeyboardEvent(vkCode, flags);
|
|
}
|
|
}
|