mirror of
https://github.com/AppleWin/AppleWin.git
synced 2024-12-24 07:30:24 +00:00
534 lines
12 KiB
C++
534 lines
12 KiB
C++
/*
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AppleWin : An Apple //e emulator for Windows
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Copyright (C) 1994-1996, Michael O'Brien
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Copyright (C) 1999-2001, Oliver Schmidt
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Copyright (C) 2002-2005, Tom Charlesworth
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Copyright (C) 2006-2007, Tom Charlesworth, Michael Pohoreski
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AppleWin 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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AppleWin 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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You should have received a copy of the GNU General Public License
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along with AppleWin; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* Description: Keyboard emulation
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*
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* Author: Various
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*/
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#include "StdAfx.h"
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#include "AppleWin.h"
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#include "Frame.h"
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#include "Keyboard.h"
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#include "Pravets.h"
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#include "Tape.h"
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#include "YamlHelper.h"
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static bool g_bKeybBufferEnable = false;
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#define KEY_OLD
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static BYTE asciicode[2][10] = {
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{0x08,0x0D,0x15,0x2F,0x00,0x00,0x00,0x00,0x00,0x00},
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{0x08,0x0B,0x15,0x0A,0x00,0x00,0x00,0x00,0x00,0x7F}
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}; // Convert PC arrow keys to Apple keycodes
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bool g_bShiftKey = false;
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bool g_bCtrlKey = false;
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bool g_bAltKey = false;
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static bool g_bCapsLock = true; //Caps lock key for Apple2 and Lat/Cyr lock for Pravets8
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static bool g_bP8CapsLock = true; //Caps lock key of Pravets 8A/C
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static int lastvirtkey = 0; // Current PC keycode
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static BYTE keycode = 0; // Current Apple keycode
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#ifdef KEY_OLD
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// Original
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static BOOL keywaiting = 0;
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#else
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// Buffered key input:
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// - Needed on faster PCs where aliasing occurs during short/fast bursts of 6502 code.
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// - Keyboard only sampled during 6502 execution, so if it's run too fast then key presses will be missed.
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const int KEY_BUFFER_MIN_SIZE = 1;
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const int KEY_BUFFER_MAX_SIZE = 2;
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static int g_nKeyBufferSize = KEY_BUFFER_MAX_SIZE; // Circ key buffer size
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static int g_nNextInIdx = 0;
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static int g_nNextOutIdx = 0;
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static int g_nKeyBufferCnt = 0;
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static struct
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{
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int nVirtKey;
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BYTE nAppleKey;
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} g_nKeyBuffer[KEY_BUFFER_MAX_SIZE];
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#endif
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static BYTE g_nLastKey = 0x00;
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//
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// ----- ALL GLOBALLY ACCESSIBLE FUNCTIONS ARE BELOW THIS LINE -----
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//
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//===========================================================================
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void KeybReset()
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{
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#ifdef KEY_OLD
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keywaiting = 0;
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#else
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g_nNextInIdx = 0;
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g_nNextOutIdx = 0;
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g_nKeyBufferCnt = 0;
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g_nLastKey = 0x00;
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g_nKeyBufferSize = g_bKeybBufferEnable ? KEY_BUFFER_MAX_SIZE : KEY_BUFFER_MIN_SIZE;
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#endif
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}
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//===========================================================================
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//void KeybSetBufferMode(bool bNewKeybBufferEnable)
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//{
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// if(g_bKeybBufferEnable == bNewKeybBufferEnable)
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// return;
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//
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// g_bKeybBufferEnable = bNewKeybBufferEnable;
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// KeybReset();
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//}
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//
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//bool KeybGetBufferMode()
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//{
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// return g_bKeybBufferEnable;
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//}
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//===========================================================================
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bool KeybGetAltStatus ()
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{
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return g_bAltKey;
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}
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//===========================================================================
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bool KeybGetCapsStatus ()
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{
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return g_bCapsLock;
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}
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//===========================================================================
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bool KeybGetP8CapsStatus()
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{
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return g_bP8CapsLock;
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}
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//===========================================================================
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/*
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bool KeybGetCapsAllowed() //For Pravets 8A/C only
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{
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return g_CapsLockAllowed;
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}
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*/
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//===========================================================================
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bool KeybGetCtrlStatus ()
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{
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return g_bCtrlKey;
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}
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//===========================================================================
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bool KeybGetShiftStatus ()
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{
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return g_bShiftKey;
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}
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//===========================================================================
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void KeybUpdateCtrlShiftStatus()
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{
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g_bShiftKey = (GetKeyState( VK_SHIFT ) & KF_UP) ? true : false; // 0x8000 KF_UP
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g_bCtrlKey = (GetKeyState( VK_CONTROL) & KF_UP) ? true : false;
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g_bAltKey = (GetKeyState( VK_MENU ) & KF_UP) ? true : false;
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}
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//===========================================================================
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BYTE KeybGetKeycode () // Used by MemCheckPaging() & VideoCheckMode()
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{
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return keycode;
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}
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//===========================================================================
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void KeybQueueKeypress (int key, BOOL bASCII)
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{
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if (bASCII == ASCII)
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{
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if (g_bFreshReset && key == VK_CANCEL) // OLD HACK: 0x03
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{
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g_bFreshReset = false;
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return; // Swallow spurious CTRL-C caused by CTRL-BREAK
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}
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g_bFreshReset = false;
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if (key > 0x7F)
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return;
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if (!IS_APPLE2)
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{
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P8Shift = false;
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if (g_bCapsLock && (key >= 'a') && (key <='z'))
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{
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P8Shift = true;
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keycode = key - 32;
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}
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else
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{
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keycode = key;
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}
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//The latter line should be applied for Pravtes 8A/C only, but not for Pravets 82/M !!!
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if ((g_bCapsLock == false) && (key >= 'A') && (key <='Z'))
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{
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P8Shift = true;
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if (g_Apple2Type == A2TYPE_PRAVETS8A)
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keycode = key + 32;
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}
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//Remap some keys for Pravets82/M
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if (g_Apple2Type == A2TYPE_PRAVETS82)
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{
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if (key == 64)
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keycode = 96;
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if (key == '^')
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keycode = '~';
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if (g_bCapsLock == false) //cyrillic letters
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{
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if (key == '`') keycode = '^';
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if (key == 92) keycode = '@'; // \ to @
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if (key == 124) keycode = 92;
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}
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else //(g_bCapsLock == true) //latin letters
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{
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if (key == 91) keycode = 123;
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if (key == 93) keycode = 125;
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if (key == 124) keycode = 92;
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}
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}
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if (g_Apple2Type == A2TYPE_PRAVETS8M) //Pravets 8M charset is still uncertain
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{
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if (g_bCapsLock == false) //cyrillic letters
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{
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if (key == '[') keycode = '{';
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if (key == ']') keycode = '}';
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if (key == '`') keycode = '~'; //96= key `~
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if (key == 92) keycode = 96;
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}
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else //latin letters
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{
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if (key == '`')
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keycode = '^'; //96= key `~
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}
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}
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//Remap some keys for Pravets8A/C, which has a different charset for Pravtes82/M, whose keys MUST NOT be remapped.
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if (g_Apple2Type == A2TYPE_PRAVETS8A) //&& (g_bCapsLock == false))
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{
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if (g_bCapsLock == false) //i.e. cyrillic letters
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{
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if (key == '[') keycode = '{';
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if (key == ']') keycode = '}';
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if (key == '`') keycode = '~';
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if (key == 92) keycode = 96;
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if (GetCapsLockAllowed() == true)
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{
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if ((key == 92) || (key == 124)) keycode = 96; //<2F> to <20>
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//This shall be rewriten, so that enabling CAPS_LOCK (i.e. F10) will not invert these keys values)
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//The same for latin letters.
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if ((key == '{') || (key == '}') || (key == '~') || (key == 124) || (key == '^') || (key == 95))
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P8Shift = true;
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}
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}
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else //i.e. latin letters
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{
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if (GetCapsLockAllowed() == false)
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{
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if (key == '{') keycode = '[';
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if (key == '}') keycode = ']';
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if (key == 124)
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keycode = 92;
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/*if (key == 92)
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keycode = 124;*/
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//Characters ` and ~ cannot be generated in 7bit character mode, so they are replaced with
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}
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else
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{
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if (key == '{') keycode = 91;
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if (key == '}') keycode = 93;
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if (key == 124) keycode = 92;
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if ((key == '[') || (key == ']') || (key == 92) || (key == '^') || (key == 95))
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P8Shift= true;
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if (key == 96) //This line shall generate sth. else i.e. ` In fact. this character is not generateable by the pravets keyboard.
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{
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keycode = '^';
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P8Shift= true;
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}
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if (key == 126) keycode = '^';
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}
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}
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}
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}
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else
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{
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if (g_Apple2Type == A2TYPE_PRAVETS8A)
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{
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}
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else
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{
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if (key >= '`')
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keycode = key - 32;
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else
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keycode = key;
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}
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}
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lastvirtkey = LOBYTE(VkKeyScan(key));
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}
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else //(bASCII != ASCII)
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{
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// Note: VK_CANCEL is Control-Break
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if ((key == VK_CANCEL) && (GetKeyState(VK_CONTROL) < 0))
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{
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#ifndef KEY_OLD
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g_nNextInIdx = g_nNextOutIdx = g_nKeyBufferCnt = 0;
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#endif
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g_bFreshReset = true;
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CtrlReset();
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return;
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}
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if ((key == VK_INSERT) && (GetKeyState(VK_SHIFT) < 0))
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{
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// Shift+Insert
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ClipboardInitiatePaste();
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return;
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}
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if (!((key >= VK_LEFT) && (key <= VK_DELETE) && asciicode[IS_APPLE2 ? 0 : 1][key - VK_LEFT]))
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return;
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keycode = asciicode[IS_APPLE2 ? 0 : 1][key - VK_LEFT]; // Convert to Apple arrow keycode
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lastvirtkey = key;
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}
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#ifdef KEY_OLD
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keywaiting = 1;
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#else
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bool bOverflow = false;
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if(g_nKeyBufferCnt < g_nKeyBufferSize)
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g_nKeyBufferCnt++;
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else
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bOverflow = true;
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g_nKeyBuffer[g_nNextInIdx].nVirtKey = lastvirtkey;
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g_nKeyBuffer[g_nNextInIdx].nAppleKey = keycode;
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g_nNextInIdx = (g_nNextInIdx + 1) % g_nKeyBufferSize;
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if(bOverflow)
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g_nNextOutIdx = (g_nNextOutIdx + 1) % g_nKeyBufferSize;
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#endif
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}
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//===========================================================================
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static HGLOBAL hglb = NULL;
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static LPTSTR lptstr = NULL;
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static bool g_bPasteFromClipboard = false;
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static bool g_bClipboardActive = false;
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void ClipboardInitiatePaste()
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{
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if (g_bClipboardActive)
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return;
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g_bPasteFromClipboard = true;
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}
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static void ClipboardDone()
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{
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if (g_bClipboardActive)
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{
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g_bClipboardActive = false;
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GlobalUnlock(hglb);
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CloseClipboard();
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}
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}
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static void ClipboardInit()
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{
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ClipboardDone();
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if (!IsClipboardFormatAvailable(CF_TEXT))
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return;
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if (!OpenClipboard(g_hFrameWindow))
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return;
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hglb = GetClipboardData(CF_TEXT);
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if (hglb == NULL)
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{
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CloseClipboard();
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return;
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}
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lptstr = (char*) GlobalLock(hglb);
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if (lptstr == NULL)
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{
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CloseClipboard();
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return;
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}
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g_bPasteFromClipboard = false;
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g_bClipboardActive = true;
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}
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static char ClipboardCurrChar(bool bIncPtr)
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{
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char nKey;
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int nInc = 1;
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if((lptstr[0] == 0x0D) && (lptstr[1] == 0x0A))
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{
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nKey = 0x0D;
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nInc = 2;
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}
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else
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{
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nKey = lptstr[0];
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}
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if(bIncPtr)
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lptstr += nInc;
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return nKey;
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}
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//===========================================================================
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BYTE __stdcall KeybReadData (WORD, WORD, BYTE, BYTE, ULONG)
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{
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if(g_bPasteFromClipboard)
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ClipboardInit();
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if(g_bClipboardActive)
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{
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if(*lptstr == 0)
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ClipboardDone();
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else
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return 0x80 | ClipboardCurrChar(false);
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}
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//
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#ifdef KEY_OLD
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return keycode | (keywaiting ? 0x80 : 0);
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#else
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BYTE nKey = g_nKeyBufferCnt ? 0x80 : 0;
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if(g_nKeyBufferCnt)
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{
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nKey |= g_nKeyBuffer[g_nNextOutIdx].nAppleKey;
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g_nLastKey = g_nKeyBuffer[g_nNextOutIdx].nAppleKey;
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}
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else
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{
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nKey |= g_nLastKey;
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}
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return nKey;
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#endif
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}
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//===========================================================================
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BYTE __stdcall KeybReadFlag (WORD, WORD, BYTE, BYTE, ULONG)
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{
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if(g_bPasteFromClipboard)
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ClipboardInit();
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if(g_bClipboardActive)
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{
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if(*lptstr == 0)
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ClipboardDone();
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else
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return 0x80 | ClipboardCurrChar(true);
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}
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//
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#ifdef KEY_OLD
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keywaiting = 0;
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return keycode | ((GetKeyState(lastvirtkey) < 0) ? 0x80 : 0);
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#else
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BYTE nKey = (GetKeyState(g_nKeyBuffer[g_nNextOutIdx].nVirtKey) < 0) ? 0x80 : 0;
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nKey |= g_nKeyBuffer[g_nNextOutIdx].nAppleKey;
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if(g_nKeyBufferCnt)
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{
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g_nKeyBufferCnt--;
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g_nNextOutIdx = (g_nNextOutIdx + 1) % g_nKeyBufferSize;
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}
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return nKey;
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#endif
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}
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//===========================================================================
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void KeybToggleCapsLock ()
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{
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if (!IS_APPLE2)
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{
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g_bCapsLock = (GetKeyState(VK_CAPITAL) & 1);
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FrameRefreshStatus(DRAW_LEDS);
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}
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}
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//===========================================================================
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void KeybToggleP8ACapsLock ()
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{
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_ASSERT(g_Apple2Type == A2TYPE_PRAVETS8A);
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P8CAPS_ON = !P8CAPS_ON;
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FrameRefreshStatus(DRAW_LEDS);
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// g_bP8CapsLock= g_bP8CapsLock?false:true; //The same as the upper, but slower
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}
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//===========================================================================
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void KeybSetSnapshot_v1(const BYTE LastKey)
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{
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g_nLastKey = LastKey;
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}
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//
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#define SS_YAML_KEY_LASTKEY "Last Key"
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static std::string KeybGetSnapshotStructName(void)
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{
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static const std::string name("Keyboard");
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return name;
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}
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void KeybSaveSnapshot(YamlSaveHelper& yamlSaveHelper)
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{
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YamlSaveHelper::Label state(yamlSaveHelper, "%s:\n", KeybGetSnapshotStructName().c_str());
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yamlSaveHelper.SaveHex8(SS_YAML_KEY_LASTKEY, g_nLastKey);
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}
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void KeybLoadSnapshot(YamlLoadHelper& yamlLoadHelper)
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{
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if (!yamlLoadHelper.GetSubMap(KeybGetSnapshotStructName()))
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return;
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g_nLastKey = (BYTE) yamlLoadHelper.LoadUint(SS_YAML_KEY_LASTKEY);
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yamlLoadHelper.PopMap();
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}
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