9bd1ba7c47
which included commits to RCS files with non-trunk default branches.
429 lines
9.9 KiB
C
429 lines
9.9 KiB
C
/*
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THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
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END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
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ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
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IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
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SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
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FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
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CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
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AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
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COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
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*/
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#pragma off (unreferenced)
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static char rcsid[] = "$Id: key.c,v 1.1.1.1 2001-01-19 03:30:15 bradleyb Exp $";
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#pragma on (unreferenced)
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#define _WIN32
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <conio.h>
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//#define WATCOM_10
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#include "mono.h"
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#include "error.h"
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#include "key.h"
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#include "timer.h"
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#define KEY_BUFFER_SIZE 16
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//-------- Variable accessed by outside functions ---------
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unsigned char keyd_print_screen=0;
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unsigned char keyd_buffer_type; // 0=No buffer, 1=buffer ASCII, 2=buffer scans
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unsigned char keyd_repeat;
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unsigned char keyd_editor_mode;
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volatile unsigned char keyd_last_pressed;
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volatile unsigned char keyd_last_released;
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volatile unsigned char keyd_pressed[256];
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volatile int keyd_time_when_last_pressed;
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typedef struct keyboard {
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unsigned short keybuffer[KEY_BUFFER_SIZE];
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fix time_pressed[KEY_BUFFER_SIZE];
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fix TimeKeyWentDown[256];
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fix TimeKeyHeldDown[256];
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unsigned int NumDowns[256];
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unsigned int NumUps[256];
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unsigned int keyhead, keytail;
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unsigned char E0Flag;
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unsigned char E1Flag;
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} keyboard;
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static volatile keyboard key_data;
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static unsigned char Installed=0;
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unsigned char ascii_table[128] =
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{ 255, 255, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=',255,255,
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'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', 255, 255,
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'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', 39, '`',
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255, '\\', 'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/', 255,'*',
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255, ' ', 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,255,255,
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255, 255, 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
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255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
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255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
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255,255,255,255,255,255,255,255 };
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unsigned char shifted_ascii_table[128] =
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{ 255, 255, '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+',255,255,
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'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', 255, 255,
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'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"', '~',
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255, '|', 'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?', 255,255,
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255, ' ', 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,255,255,
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255, 255, 255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
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255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
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255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
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255,255,255,255,255,255,255,255 };
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// Initialization and Cleanup Routines
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void key_init()
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{
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keyd_time_when_last_pressed = timer_get_fixed_seconds();
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keyd_buffer_type = 1;
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keyd_repeat = 1;
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key_data.E0Flag = 0;
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key_data.E1Flag = 0;
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// Clear the keyboard array
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key_flush();
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if (!Installed) Installed = 1;
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}
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void key_close()
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{
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if (!Installed) return;
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key_clear_bios_buffer_all();
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}
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extern char key_to_ascii(int keycode )
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{
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int shifted;
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shifted = keycode & KEY_SHIFTED;
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keycode &= 0xFF;
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if ( keycode>=127 )
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return 255;
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if (shifted)
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return shifted_ascii_table[keycode];
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else
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return ascii_table[keycode];
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}
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void key_clear_bios_buffer_all()
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{
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}
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void key_clear_bios_buffer()
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{
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}
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void key_flush()
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{
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int i;
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fix CurTime;
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// Clear the BIOS buffer
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key_clear_bios_buffer();
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key_data.keyhead = key_data.keytail = 0;
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//Clear the keyboard buffer
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for (i=0; i<KEY_BUFFER_SIZE; i++ ) {
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key_data.keybuffer[i] = 0;
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key_data.time_pressed[i] = 0;
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}
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//Clear the keyboard array
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CurTime =timer_get_fixed_secondsX();
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for (i=0; i<256; i++ ) {
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keyd_pressed[i] = 0;
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key_data.TimeKeyWentDown[i] = CurTime;
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key_data.TimeKeyHeldDown[i] = 0;
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key_data.NumDowns[i]=0;
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key_data.NumUps[i]=0;
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}
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keyd_print_screen = 0;
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}
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int add_one( int n )
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{
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n++;
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if ( n >= KEY_BUFFER_SIZE ) n=0;
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return n;
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}
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// Returns 1 if character waiting... 0 otherwise
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int key_checkch()
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{
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int is_one_waiting = 0;
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key_clear_bios_buffer();
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if (key_data.keytail!=key_data.keyhead)
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is_one_waiting = 1;
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return is_one_waiting;
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}
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int key_inkey()
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{
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int key = 0;
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key_clear_bios_buffer();
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if (key_data.keytail!=key_data.keyhead) {
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key = key_data.keybuffer[key_data.keyhead];
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key_data.keyhead = add_one(key_data.keyhead);
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}
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return key;
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}
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int key_inkey_time(fix * time)
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{
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int key = 0;
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key_clear_bios_buffer();
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if (key_data.keytail!=key_data.keyhead) {
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key = key_data.keybuffer[key_data.keyhead];
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*time = key_data.time_pressed[key_data.keyhead];
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key_data.keyhead = add_one(key_data.keyhead);
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}
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return key;
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}
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void key_putkey (unsigned short keycode)
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{
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// this function simulates a key stroke entered
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char temp;
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temp = key_data.keytail+1;
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if ( temp >= KEY_BUFFER_SIZE ) temp=0;
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if (temp!=key_data.keyhead)
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{
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key_data.keybuffer[key_data.keytail] = keycode;
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key_data.keytail = temp;
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}
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}
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int key_peekkey()
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{
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int key = 0;
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key_clear_bios_buffer();
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if (key_data.keytail!=key_data.keyhead) {
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key = key_data.keybuffer[key_data.keyhead];
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}
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return key;
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}
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// If not installed, uses BIOS and returns getch();
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// Else returns pending key (or waits for one if none waiting).
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int key_getch()
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{
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int dummy=0;
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if (!Installed)
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return getch();
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while (!key_checkch())
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dummy++;
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return key_inkey();
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}
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unsigned int key_get_shift_status()
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{
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unsigned int shift_status = 0;
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key_clear_bios_buffer();
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if ( keyd_pressed[KEY_LSHIFT] || keyd_pressed[KEY_RSHIFT] )
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shift_status |= KEY_SHIFTED;
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if ( keyd_pressed[KEY_LALT] || keyd_pressed[KEY_RALT] )
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shift_status |= KEY_ALTED;
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if ( keyd_pressed[KEY_LCTRL] || keyd_pressed[KEY_RCTRL] )
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shift_status |= KEY_CTRLED;
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#ifndef NDEBUG
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if (keyd_pressed[KEY_DELETE])
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shift_status |=KEY_DEBUGGED;
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#endif
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return shift_status;
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}
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// Returns the number of seconds this key has been down since last call.
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fix key_down_time(int scancode) {
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fix time_down, time;
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if ((scancode<0)|| (scancode>255)) return 0;
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#ifndef NDEBUG
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if (keyd_editor_mode && key_get_shift_status() )
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return 0;
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#endif
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if ( !keyd_pressed[scancode] ) {
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time_down = key_data.TimeKeyHeldDown[scancode];
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key_data.TimeKeyHeldDown[scancode] = 0;
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} else {
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time = timer_get_fixed_secondsX();
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time_down = time - key_data.TimeKeyWentDown[scancode];
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key_data.TimeKeyWentDown[scancode] = time;
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}
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return time_down;
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}
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// Returns number of times key has went from up to down since last call.
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unsigned int key_down_count(int scancode) {
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int n;
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if ((scancode<0)|| (scancode>255)) return 0;
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n = key_data.NumDowns[scancode];
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key_data.NumDowns[scancode] = 0;
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return n;
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}
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// Returns number of times key has went from down to up since last call.
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unsigned int key_up_count(int scancode) {
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int n;
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if ((scancode<0)|| (scancode>255)) return 0;
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n = key_data.NumUps[scancode];
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key_data.NumUps[scancode] = 0;
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return n;
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}
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// Use intrinsic forms so that we stay in the locked interrup code.
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void Int5();
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#pragma aux Int5 = "int 5";
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// Send keyboard message to Descent keyboard system.
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void send_key_msg(UINT msg, WPARAM vkeycode, LPARAM keypack)
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{
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unsigned char scancode, temp;
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unsigned short keycode;
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// Extract 8-bit OEM scancode
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scancode = (char)((keypack >> 16) & 0xff);
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if (vkeycode == VK_SNAPSHOT) {
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scancode = KEY_PRINT_SCREEN;
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keyd_print_screen = 1;
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}
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else if (keypack & 0x01000000) scancode |= 0x80;
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if (vkeycode == VK_PAUSE) scancode = KEY_PAUSE;
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switch (msg)
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{
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case WM_SYSKEYDOWN:
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case WM_KEYDOWN: // Keyboard down
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// Handle Pauses the easy way.
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keyd_last_pressed = scancode;
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keyd_time_when_last_pressed = timer_get_fixed_secondsX();
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if (!keyd_pressed[scancode]) {
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// First time key is down.
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key_data.TimeKeyWentDown[scancode] = timer_get_fixed_secondsX();
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keyd_pressed[scancode] = 1;
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key_data.NumDowns[scancode]++;
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#ifndef NDEBUG
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if ((keyd_pressed[KEY_LSHIFT]) && (scancode == KEY_BACKSP)) {
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keyd_pressed[KEY_LSHIFT] = 0;
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// Int5();
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}
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#endif
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}
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else if (!keyd_repeat) {
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// don't buffer repeating key if repeat mode is off
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scancode = 0xaa;
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}
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if (scancode != 0xaa) {
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keycode = (unsigned short)scancode;
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if (keyd_pressed[KEY_LSHIFT] || keyd_pressed[KEY_RSHIFT])
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keycode |= KEY_SHIFTED;
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if (keyd_pressed[KEY_LALT] || keyd_pressed[KEY_RALT])
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keycode |= KEY_ALTED;
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if (keyd_pressed[KEY_LCTRL] || keyd_pressed[KEY_RCTRL])
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keycode |= KEY_CTRLED;
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#ifndef NDEBUG
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if (keyd_pressed[KEY_DELETE])
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keycode |= KEY_DEBUGGED;
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#endif
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temp = key_data.keytail+1;
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if (temp >= KEY_BUFFER_SIZE) temp = 0;
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if (temp!= key_data.keyhead) {
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key_data.keybuffer[key_data.keytail] = keycode;
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key_data.time_pressed[key_data.keytail] = keyd_time_when_last_pressed;
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key_data.keytail = temp;
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}
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}
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break;
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case WM_SYSKEYUP:
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case WM_KEYUP: // handle key ups
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keyd_last_released = scancode;
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keyd_pressed[scancode] = 0;
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key_data.NumUps[scancode]++;
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temp = 0;
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temp |= keyd_pressed[KEY_LSHIFT] || keyd_pressed[KEY_RSHIFT];
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temp |= keyd_pressed[KEY_LALT] || keyd_pressed[KEY_RALT];
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temp |= keyd_pressed[KEY_LCTRL] || keyd_pressed[KEY_RCTRL];
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#ifndef NDEBUG
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temp |= keyd_pressed[KEY_DELETE];
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if (!(keyd_editor_mode && temp))
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#endif
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// NOTICE LINK TO ABOVE IF!!!!
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key_data.TimeKeyHeldDown[scancode] += timer_get_fixed_secondsX() -
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key_data.TimeKeyWentDown[scancode];
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break;
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} // switch (msg)
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}
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