keyboard.cpp

MudMaster 2000 的C++源码

/************************************************************************************
	Copyright (c) 2000 Aaron O'Neil
	All rights reserved.

	Redistribution and use in source and binary forms, with or without
	modification, are permitted provided that the following conditions
	are met:

		1) Redistributions of source code must retain the above copyright notice, 
				this list of conditions and the following disclaimer.
		2) Redistributions in binary form must reproduce the above copyright notice, 
				this list of conditions and the following disclaimer in the documentation
				and/or other materials provided with the distribution.
		3) Redistributions in binary form must reproduce the above copyright notice on
				program startup. Additional credits for program modification are acceptable
				but original copyright and credits must be visible at startup.
		4) You may charge a reasonable copying fee for any distribution of Mud Master. 
				You may charge any fee you choose for support of Mud Master. You may not 
				charge a fee for Mud Master itself.

  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
	INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

**************************************************************************************/

#include "StdAfx.h"
#include "Extern.h"
#include "Keyboard.h"

CKeyboard::CKeyboard()
{
	m_hInput = GetStdHandle(STD_INPUT_HANDLE);
	SetConsoleMode(m_hInput,0);
}

BOOL CKeyboard::GetKey(KEYBOARDCHAR &kbch)
{
	CString strTemp;
	BOOL bNumLock;

	unsigned long lNum;
	// Make sure there is an event in the buffer.  Events can be
	// in the buffer that have nothing to do with the keyboard.
	if (!PeekConsoleInput(m_hInput,&m_ir,1,&lNum))
		return(FALSE);

	// No Events waiting.
	if (!lNum)
		return(FALSE);

	BOOL bResult = ReadConsoleInput(m_hInput,&m_ir,1,&lNum);

	if (bResult && m_ir.EventType == KEY_EVENT)
	{
		if (m_ir.Event.KeyEvent.bKeyDown)
		{
			// Need to catch the control keys.  Ctrl, Alt, Shift, etc...
			switch(m_ir.Event.KeyEvent.wVirtualKeyCode)
			{
				case VK_MENU :
				case VK_CONTROL :
				case VK_SHIFT :
				case VK_CAPITAL :
				case VK_NUMLOCK :
					return(FALSE);
			}

			bNumLock = m_ir.Event.KeyEvent.dwControlKeyState & NUMLOCK_ON;

			// If the AltGr key is enabled, need to make some exceptions.
			if (_config.bAltGr && (m_ir.Event.KeyEvent.dwControlKeyState & RIGHT_ALT_PRESSED))
			{
				kbch.chKey = m_ir.Event.KeyEvent.uChar.AsciiChar;
				kbch.wKeyCode = m_ir.Event.KeyEvent.wVirtualKeyCode;
				kbch.bAlt = FALSE;
				kbch.bEnhanced = FALSE;
				kbch.bSpecial = FALSE;
				kbch.bShift = m_ir.Event.KeyEvent.dwControlKeyState & SHIFT_PRESSED;
				kbch.wKeyID = kbch.wKeyCode;
			}
			else
			{
				kbch.chKey = m_ir.Event.KeyEvent.uChar.AsciiChar;
				kbch.wKeyCode = m_ir.Event.KeyEvent.wVirtualKeyCode;
				kbch.bSpecial = FALSE;
				kbch.bAlt = (m_ir.Event.KeyEvent.dwControlKeyState & LEFT_ALT_PRESSED) || (m_ir.Event.KeyEvent.dwControlKeyState & RIGHT_ALT_PRESSED);
				kbch.bControl = (m_ir.Event.KeyEvent.dwControlKeyState & LEFT_CTRL_PRESSED) || (m_ir.Event.KeyEvent.dwControlKeyState & RIGHT_CTRL_PRESSED);
				kbch.bShift = m_ir.Event.KeyEvent.dwControlKeyState & SHIFT_PRESSED;
				kbch.wKeyID = kbch.wKeyCode;

				/*strTemp.Format("dwControlKeyState: 0x%X, Alt:%d, Ctrl:%d, Shift:%d, VKey:0x%X, Ascii:%d",
					m_ir.Event.KeyEvent.dwControlKeyState,
					kbch.bAlt,
					kbch.bControl,
					kbch.bShift,
					kbch.wKeyCode,
					kbch.chKey);
				PrintMessage(strTemp); */

				// Exceptions for number keys on the number pad dealing with the shift key.
				// The shift key reverses the state of the numlock key.
				if (kbch.wKeyCode >= VK_NUMPAD0 && kbch.wKeyCode <= VK_NUMPAD9 && kbch.bShift && !bNumLock)
				{
					kbch.chKey = 0;
					switch(kbch.wKeyCode)
					{
						case VK_NUMPAD0 :
							kbch.wKeyCode = VK_INSERT;
							break;
						case VK_NUMPAD1 :
							kbch.wKeyCode = VK_END;
							break;
						case VK_NUMPAD2 :
							kbch.wKeyCode = VK_DOWN;
							break;
						case VK_NUMPAD3 :
							kbch.wKeyCode = VK_NEXT;
							break;
						case VK_NUMPAD4 :
							kbch.wKeyCode = VK_LEFT;
							break;
						case VK_NUMPAD5 :
							kbch.wKeyCode = VK_CLEAR;
							break;
						case VK_NUMPAD6 :
							kbch.wKeyCode = VK_RIGHT;
							break;
						case VK_NUMPAD7 :
							kbch.wKeyCode = VK_HOME;
							break;
						case VK_NUMPAD8 :
							kbch.wKeyCode = VK_UP;
							break;
						case VK_NUMPAD9 :
							kbch.wKeyCode = VK_PRIOR;
							break;
					}
					kbch.wKeyID = kbch.wKeyCode;
				}

				// Opposite of above.
				if (kbch.bShift && bNumLock)
				{
					switch(kbch.wKeyCode)
					{
						case VK_INSERT :
							kbch.wKeyCode = VK_NUMPAD0;
							kbch.chKey = '0';
							kbch.wKeyID = kbch.wKeyCode;
							break;
						case VK_END :
							kbch.wKeyCode = VK_NUMPAD1;
							kbch.chKey = '1';
							kbch.wKeyID = kbch.wKeyCode;
							break;
						case VK_DOWN :
							kbch.wKeyCode = VK_NUMPAD2;
							kbch.chKey = '2';
							kbch.wKeyID = kbch.wKeyCode;
							break;
						case VK_NEXT :
							kbch.wKeyCode = VK_NUMPAD3;
							kbch.chKey = '3';
							kbch.wKeyID = kbch.wKeyCode;
							break;
						case VK_LEFT :
							kbch.wKeyCode = VK_NUMPAD4;
							kbch.chKey = '4';
							kbch.wKeyID = kbch.wKeyCode;
							break;
						case VK_CLEAR :
							kbch.wKeyCode = VK_NUMPAD5;
							kbch.chKey = '5';
							kbch.wKeyID = kbch.wKeyCode;
							break;
						case VK_RIGHT :
							kbch.wKeyCode = VK_NUMPAD6;
							kbch.chKey = '6';
							kbch.wKeyID = kbch.wKeyCode;
							break;
						case VK_HOME :
							kbch.wKeyCode = VK_NUMPAD7;
							kbch.chKey = '7';
							kbch.wKeyID = kbch.wKeyCode;
							break;
						case VK_UP :
							kbch.wKeyCode = VK_NUMPAD8;
							kbch.chKey = '8';
							kbch.wKeyID = kbch.wKeyCode;
							break;
						case VK_PRIOR :
							kbch.wKeyCode = VK_NUMPAD9;
							kbch.chKey = '9';
							kbch.wKeyID = kbch.wKeyCode;
							break;
					}
				}

				// To keep macro checking easy for control+alpha, setting the keyID to the alpha
				// value + the control state.
				if (kbch.bControl && kbch.wKeyCode >= 'A' && kbch.wKeyCode <= 'Z')
					kbch.wKeyID = 'A' + (kbch.chKey - 1);

				if (kbch.bControl)
					kbch.wKeyID += KEYBOARD_CONTROL;

				if (kbch.bShift)
					kbch.wKeyID += KEYBOARD_SHIFT;

				if (kbch.wKeyCode != VK_RETURN && (m_ir.Event.KeyEvent.dwControlKeyState & ENHANCED_KEY))
				{
					kbch.bEnhanced = TRUE;
					kbch.bSpecial = TRUE;
					kbch.wKeyID += KEYBOARD_ENHANCED;
				}
				else
					kbch.bEnhanced = FALSE;

				// If either alt key is down, it's a special key.
				if (kbch.bAlt)
				{
					kbch.bSpecial = TRUE;
					kbch.wKeyID += KEYBOARD_ALT;
				}

				// If the ascii character is 0, then it's a special key.
				if (!kbch.chKey)
					kbch.bSpecial = TRUE;
			}

			// Read the number events now waiting to see if there are
			// more events waiting.
			if (!PeekConsoleInput(m_hInput,&m_ir,1,&lNum))
				kbch.bMoreEvents = FALSE;
 			else
				kbch.bMoreEvents = TRUE;
			return(TRUE);
		}					 
	}
	return(FALSE);
}