384 lines
9.8 KiB
C
384 lines
9.8 KiB
C
/// SDL keyboard input support
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#include <stdio.h>
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#include <stdlib.h>
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#include <vgakeyboard.h>
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#include "event.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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//added on 9/3/98 by Matt Mueller to free some cpu instead of hogging during menus and such
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#include "d_delay.h"
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//end this section addition - Matt Mueller
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#define KEY_BUFFER_SIZE 16
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static unsigned char Installed = 0;
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//-------- Variable accessed by outside functions ---------
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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 Key_info {
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ubyte state; // state of key 1 == down, 0 == up
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ubyte last_state; // previous state of key
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int counter; // incremented each time key is down in handler
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fix timewentdown; // simple counter incremented each time in interrupt and key is down
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fix timehelddown; // counter to tell how long key is down -- gets reset to 0 by key routines
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ubyte downcount; // number of key counts key was down
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ubyte upcount; // number of times key was released
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} Key_info;
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typedef struct keyboard {
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unsigned short keybuffer[KEY_BUFFER_SIZE];
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Key_info keys[256];
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fix time_pressed[KEY_BUFFER_SIZE];
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unsigned int keyhead, keytail;
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} keyboard;
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static /*volatile*/ keyboard key_data;
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char * key_text[256] = {
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"","ESC","1","2","3","4","5","6","7","8","9","0","-",
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"=","BSPC","TAB","Q","W","E","R","T","Y","U","I","O",
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"P","[","]","ƒ","LCTRL","A","S","D","F",
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"G","H","J","K","L",";","'","`",
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"LSHFT","\\","Z","X","C","V","B","N","M",",",
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".","/","RSHFT","PAD*","LALT","SPC",
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"CPSLK","F1","F2","F3","F4","F5","F6","F7","F8","F9",
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"F10","NMLCK","SCLK","PAD7","PAD8","PAD9","PAD-",
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"PAD4","PAD5","PAD6","PAD+","PAD1","PAD2","PAD3","PAD0",
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"PAD.","","","","F11","F12","","","","","","","","","",
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"","","","","","","","","","","","","","","","","","","","",
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"","","","","","","","","","","","","","","","","","","","",
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"","","","","","","","","","","","","","","","","","",
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"PADƒ","RCTRL","","","","","","","","","","","","","",
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"","","","","","","","","","","PAD/","","","RALT","",
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"","","","","","","","","","","","","","HOME","‚","PGUP",
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"","<EFBFBD>","","","","END","€","PGDN","INS",
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"DEL","","","","","","","","","","","","","","","","","",
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"","","","","","","","","","","","","","","","","","","","",
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"","","","","","","" };
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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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//killed on 10/03/98 by Matt Mueller
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//unsigned char key_to_ascii(int a)
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//{
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// if (!isprint(a)) return 255;
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// if (a & KEY_SHIFTED) {
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// return (toupper((unsigned char) a));
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// } else {
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// return ((unsigned char) a);
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// }
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//}
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//end kill -MM
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//added on 10/03/98 by Matt Mueller to fix shifted keys (copied from dos/key.c)
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unsigned 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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//end addition -MM
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void key_handler(int scancode, int press)
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{
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ubyte state, key_state;
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int i, keycode, event_key;
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Key_info *key;
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unsigned char temp;
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if (press == KEY_EVENTPRESS)
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key_state = 1;
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else if (press == KEY_EVENTRELEASE)
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key_state = 0;
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else
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return;
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event_key = scancode;
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//=====================================================
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//Here a translation from win keycodes to mac keycodes!
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//=====================================================
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for (i = 255; i >= 0; i--) {
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keycode = i;
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key = &(key_data.keys[keycode]);
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if (i == event_key)
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state = key_state;
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else
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state = key->last_state;
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if ( key->last_state == state ) {
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if (state) {
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key->counter++;
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keyd_last_pressed = keycode;
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keyd_time_when_last_pressed = timer_get_fixed_seconds();
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}
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} else {
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if (state) {
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keyd_last_pressed = keycode;
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keyd_pressed[keycode] = 1;
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key->downcount += state;
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key->state = 1;
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key->timewentdown = keyd_time_when_last_pressed = timer_get_fixed_seconds();
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key->counter++;
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} else {
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keyd_pressed[keycode] = 0;
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keyd_last_released = keycode;
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key->upcount += key->state;
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key->state = 0;
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key->counter = 0;
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key->timehelddown += timer_get_fixed_seconds() - key->timewentdown;
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}
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}
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if ( (state && !key->last_state) || (state && key->last_state && (key->counter > 30) && (key->counter & 0x01)) ) {
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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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if ( keyd_pressed[KEY_DELETE] )
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keycode |= KEY_DEBUGGED;
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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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key->last_state = state;
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}
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}
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void key_close()
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{
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Installed = 0;
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keyboard_close();
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}
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void key_init()
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{
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if (keyboard_init())
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Error ("SVGAlib Keyboard Init Failed");
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Installed=1;
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keyboard_seteventhandler (key_handler);
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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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// Clear the keyboard array
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key_flush();
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atexit(key_close);
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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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if (!Installed)
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key_init();
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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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//use gettimeofday here:
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curtime = timer_get_fixed_seconds();
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for (i=0; i<256; i++ ) {
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keyd_pressed[i] = 0;
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key_data.keys[i].state = 1;
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key_data.keys[i].last_state = 0;
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key_data.keys[i].timewentdown = curtime;
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key_data.keys[i].downcount=0;
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key_data.keys[i].upcount=0;
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key_data.keys[i].timehelddown = 0;
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key_data.keys[i].counter = 0;
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}
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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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int key_checkch()
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{
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int is_one_waiting = 0;
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event_poll();
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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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if (!Installed)
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key_init();
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event_poll();
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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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//added 9/3/98 by Matt Mueller to free cpu time instead of hogging during menus and such
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// else d_delay(1);
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//end addition - Matt Mueller
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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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if (!Installed)
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key_init();
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event_poll();
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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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int key_peekkey()
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{
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int key = 0;
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event_poll();
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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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return key;
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}
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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 0;
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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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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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{
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fix time_down, time;
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event_poll();
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if ((scancode<0)|| (scancode>255)) return 0;
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if (!keyd_pressed[scancode]) {
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time_down = key_data.keys[scancode].timehelddown;
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key_data.keys[scancode].timehelddown = 0;
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} else {
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time = timer_get_fixed_seconds();
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time_down = time - key_data.keys[scancode].timewentdown;
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key_data.keys[scancode].timewentdown = time;
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}
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return time_down;
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}
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unsigned int key_down_count(int scancode)
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{
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int n;
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event_poll();
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if ((scancode<0)|| (scancode>255)) return 0;
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n = key_data.keys[scancode].downcount;
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key_data.keys[scancode].downcount = 0;
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return n;
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}
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unsigned int key_up_count(int scancode)
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{
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int n;
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event_poll();
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if ((scancode<0)|| (scancode>255)) return 0;
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n = key_data.keys[scancode].upcount;
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key_data.keys[scancode].upcount = 0;
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return n;
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}
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