Apple-2-Tools
/
AppleWin
mirror of https://github.com/AppleWin/AppleWin.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
AppleWin/AppleWin/source/Keyboard.cpp

397 lines
8.5 KiB
C++
Raw Blame History

/*
AppleWin : An Apple //e emulator for Windows
Copyright (C) 1994-1996, Michael O'Brien
Copyright (C) 1999-2001, Oliver Schmidt
Copyright (C) 2002-2005, Tom Charlesworth
Copyright (C) 2006, Tom Charlesworth, Michael Pohoreski
AppleWin 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.
AppleWin 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 AppleWin; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* Description: Keyboard emulation
*
* Author: Various
*/
#include "StdAfx.h"
#pragma hdrstop
static bool g_bKeybBufferEnable = false;
#define KEY_OLD
#define OLIVER_SCHMIDT_FIX2 // PC's delete key maps to Apple's DEL key
#ifdef OLIVER_SCHMIDT_FIX2
static BYTE asciicode[10] = {0x08,0x0B,0x15,0x0A,0x00,0x00,0x00,0x00,0x00,0x7F}; // Convert PC arrow keys to Apple keycodes
#else
static BYTE asciicode[4] = {0x08,0x0B,0x15,0x0A}; // Convert PC arrow keys to Apple keycodes
#endif
static bool gbShiftKey = false; // +PATCH MJP
static bool gbCtrlKey = false; // +PATCH MJP
static BOOL capslock = 1;
static int lastvirtkey = 0; // Current PC keycode
static BYTE keycode = 0; // Current Apple keycode
static DWORD keyboardqueries = 0;
#ifdef KEY_OLD
// Original
static BOOL keywaiting = 0;
#else
// Buffered key input:
// - Needed on faster PCs where aliasing occurs during short/fast bursts of 6502 code.
// - Keyboard only sampled during 6502 execution, so if it's run too fast then key presses will be missed.
const int KEY_BUFFER_MIN_SIZE = 1;
const int KEY_BUFFER_MAX_SIZE = 2;
static int g_nKeyBufferSize = KEY_BUFFER_MAX_SIZE; // Circ key buffer size
static int g_nNextInIdx = 0;
static int g_nNextOutIdx = 0;
static int g_nKeyBufferCnt = 0;
static struct
{
int nVirtKey;
BYTE nAppleKey;
} g_nKeyBuffer[KEY_BUFFER_MAX_SIZE];
#endif
static BYTE g_nLastKey = 0x00;
//
// ----- ALL GLOBALLY ACCESSIBLE FUNCTIONS ARE BELOW THIS LINE -----
//
//===========================================================================
void KeybReset()
{
#ifdef KEY_OLD
keywaiting = 0;
#else
g_nNextInIdx = 0;
g_nNextOutIdx = 0;
g_nKeyBufferCnt = 0;
g_nLastKey = 0x00;
g_nKeyBufferSize = g_bKeybBufferEnable ? KEY_BUFFER_MAX_SIZE : KEY_BUFFER_MIN_SIZE;
#endif
}
//===========================================================================
//void KeybSetBufferMode(bool bNewKeybBufferEnable)
//{
// if(g_bKeybBufferEnable == bNewKeybBufferEnable)
// return;
//
// g_bKeybBufferEnable = bNewKeybBufferEnable;
// KeybReset();
//}
//
//bool KeybGetBufferMode()
//{
// return g_bKeybBufferEnable;
//}
//===========================================================================
void KeybGetCapsStatus (BOOL *status)
{
*status = capslock;
}
//===========================================================================
bool KeybGetShiftStatus ()
{
return gbShiftKey;
}
//===========================================================================
bool KeybGetCtrlStatus ()
{
return gbCtrlKey;
}
//===========================================================================
void KeybUpdateCtrlShiftStatus()
{
gbShiftKey = (GetKeyState( VK_SHIFT ) & 0x8000) ? true : false;
gbCtrlKey = (GetKeyState( VK_CONTROL) & 0x8000) ? true : false;
}
//===========================================================================
BYTE KeybGetKeycode () // Used by MemCheckPaging() & VideoCheckMode()
{
return keycode;
}
//===========================================================================
DWORD KeybGetNumQueries () // Used in determining 'idleness' of Apple system
{
DWORD result = keyboardqueries;
keyboardqueries = 0;
return result;
}
//===========================================================================
void KeybQueueKeypress (int key, BOOL bASCII)
{
if (bASCII == ASCII)
{
if (key > 0x7F)
return;
if ((key >= 'a') && (key <= 'z') && (capslock || !apple2e))
keycode = key - ('a'-'A');
else
keycode = key;
lastvirtkey = LOBYTE(VkKeyScan(key));
}
else
{
if ((key == VK_CANCEL) && ((!apple2e) || (GetKeyState(VK_CONTROL) < 0)) )
{
// Ctrl+Reset
if (apple2e)
MemResetPaging();
DiskReset();
KeybReset();
VideoResetState(); // Switch Alternate char set off
MB_Reset();
#ifndef KEY_OLD
g_nNextInIdx = g_nNextOutIdx = g_nKeyBufferCnt = 0;
#endif
CpuInitialize();
return;
}
if ((key == VK_INSERT) && (GetKeyState(VK_SHIFT) < 0))
{
// Shift+Insert
ClipboardInitiatePaste();
return;
}
#ifdef OLIVER_SCHMIDT_FIX2
if (!((key >= VK_LEFT) && (key <= VK_DELETE) && asciicode[key - VK_LEFT]))
return;
keycode = asciicode[key - VK_LEFT]; // Convert to Apple arrow keycode
lastvirtkey = key;
#else
if (!((key >= VK_LEFT) && (key <= VK_DOWN)))
return;
keycode = asciicode[key - VK_LEFT]; // Convert to Apple arrow keycode
lastvirtkey = key;
#endif
}
#ifdef KEY_OLD
keywaiting = 1;
#else
bool bOverflow = false;
if(g_nKeyBufferCnt < g_nKeyBufferSize)
g_nKeyBufferCnt++;
else
bOverflow = true;
g_nKeyBuffer[g_nNextInIdx].nVirtKey = lastvirtkey;
g_nKeyBuffer[g_nNextInIdx].nAppleKey = keycode;
g_nNextInIdx = (g_nNextInIdx + 1) % g_nKeyBufferSize;
if(bOverflow)
g_nNextOutIdx = (g_nNextOutIdx + 1) % g_nKeyBufferSize;
#endif
}
//===========================================================================
static HGLOBAL hglb = NULL;
static LPTSTR lptstr = NULL;
static bool g_bPasteFromClipboard = false;
static bool g_bClipboardActive = false;
void ClipboardInitiatePaste()
{
if (g_bClipboardActive)
return;
g_bPasteFromClipboard = true;
}
static void ClipboardDone()
{
if (g_bClipboardActive)
{
g_bClipboardActive = false;
GlobalUnlock(hglb);
CloseClipboard();
}
}
static void ClipboardInit()
{
ClipboardDone();
if (!IsClipboardFormatAvailable(CF_TEXT))
return;
if (!OpenClipboard(framewindow))
return;
hglb = GetClipboardData(CF_TEXT);
if (hglb == NULL)
{
CloseClipboard();
return;
}
lptstr = (char*) GlobalLock(hglb);
if (lptstr == NULL)
{
CloseClipboard();
return;
}
g_bPasteFromClipboard = false;
g_bClipboardActive = true;
}
static char ClipboardCurrChar(bool bIncPtr)
{
char nKey;
int nInc = 1;
if((lptstr[0] == 0x0D) && (lptstr[1] == 0x0A))
{
nKey = 0x0D;
nInc = 2;
}
else
{
nKey = lptstr[0];
}
if(bIncPtr)
lptstr += nInc;
return nKey;
}
//===========================================================================
BYTE __stdcall KeybReadData (WORD, BYTE, BYTE, BYTE, ULONG)
{
keyboardqueries++;
//
if(g_bPasteFromClipboard)
ClipboardInit();
if(g_bClipboardActive)
{
if(*lptstr == 0)
ClipboardDone();
else
return 0x80 | ClipboardCurrChar(false);
}
//
#ifdef KEY_OLD
return keycode | (keywaiting ? 0x80 : 0);
#else
BYTE nKey = g_nKeyBufferCnt ? 0x80 : 0;
if(g_nKeyBufferCnt)
{
nKey |= g_nKeyBuffer[g_nNextOutIdx].nAppleKey;
g_nLastKey = g_nKeyBuffer[g_nNextOutIdx].nAppleKey;
}
else
{
nKey |= g_nLastKey;
}
return nKey;
#endif
}
//===========================================================================
BYTE __stdcall KeybReadFlag (WORD, BYTE, BYTE, BYTE, ULONG)
{
keyboardqueries++;
//
if(g_bPasteFromClipboard)
ClipboardInit();
if(g_bClipboardActive)
{
if(*lptstr == 0)
ClipboardDone();
else
return 0x80 | ClipboardCurrChar(true);
}
//
#ifdef KEY_OLD
keywaiting = 0;
return keycode | ((GetKeyState(lastvirtkey) < 0) ? 0x80 : 0);
#else
BYTE nKey = (GetKeyState(g_nKeyBuffer[g_nNextOutIdx].nVirtKey) < 0) ? 0x80 : 0;
nKey |= g_nKeyBuffer[g_nNextOutIdx].nAppleKey;
if(g_nKeyBufferCnt)
{
g_nKeyBufferCnt--;
g_nNextOutIdx = (g_nNextOutIdx + 1) % g_nKeyBufferSize;
}
return nKey;
#endif
}
//===========================================================================
void KeybToggleCapsLock ()
{
if (apple2e)
{
capslock = (GetKeyState(VK_CAPITAL) & 1);
FrameRefreshStatus(DRAW_LEDS);
}
}
//===========================================================================
DWORD KeybGetSnapshot(SS_IO_Keyboard* pSS)
{
pSS->keyboardqueries = keyboardqueries;
pSS->nLastKey = g_nLastKey;
return 0;
}
DWORD KeybSetSnapshot(SS_IO_Keyboard* pSS)
{
keyboardqueries = pSS->keyboardqueries;
g_nLastKey = pSS->nLastKey;
return 0;
}
Reference in New Issue View Git Blame Copy Permalink