conio.c

00001 /*
00002     conio.c
00003     Standard conio routines.
00004     Part of MicroVGA CONIO library / demo project
00005     Copyright (c) 2008-9 SECONS s.r.o., http://www.MicroVGA.com
00006 
00007     This program is free software: you can redistribute it and/or modify
00008     it under the terms of the GNU General Public License as published by
00009     the Free Software Foundation, either version 3 of the License, or
00010     (at your option) any later version.
00011 
00012     This program is distributed in the hope that it will be useful,
00013     but WITHOUT ANY WARRANTY; without even the implied warranty of
00014     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015     GNU General Public License for more details.
00016 
00017     You should have received a copy of the GNU General Public License
00018     along with this program.  If not, see <http://www.gnu.org/licenses/>.
00019 */
00020 
00021 #include "../h/conio.h"
00022 #include "../h/ui.h"
00023 #include "../h/kbd.h"
00024 
00025 
00026 
00027 void clrscr(void)
00028 {
00029   _putch('\033');
00030   _putch('[');
00031   _putch('2');
00032   _putch('J');
00033 }
00034 
00035 void clreol(void)
00036 {
00037   _putch('\033');
00038   _putch('[');
00039   _putch('K');
00040 }
00041 
00042 
00043 void cursoron(void)
00044 {
00045   _putch('\033');
00046   _putch('[');
00047   _putch('2');
00048   _putch('5');
00049   _putch('h');
00050 }
00051 
00052 void cursoroff(void)
00053 {
00054   _putch('\033');
00055   _putch('[');
00056   _putch('2');
00057   _putch('5');
00058   _putch('l');
00059 }
00060 
00061 void textcolor(int color)
00062 {
00063   _putch('\033');
00064   _putch('[');
00065   if (color & 0x8) 
00066       _putch('1');
00067   else _putch('2');
00068   _putch('m');
00069 
00070   _putch('\033');
00071   _putch('[');
00072   _putch('3');
00073   _putch(((color&0x7)%10)+'0');
00074   _putch('m');
00075 }
00076 
00077 void textbackground(int color)
00078 {
00079   _putch('\033');
00080   _putch('[');
00081   if (color & 0x8) 
00082       _putch('5');
00083   else _putch('6');
00084   _putch('m');
00085 
00086   _putch('\033');
00087   _putch('[');
00088   _putch('4');
00089   _putch((color&0x7)+'0');
00090   _putch('m');
00091 }
00092 
00093 void textattr(int attr)
00094 {
00095   textcolor(attr&0xF);
00096   textbackground(attr>>4);
00097 }
00098 
00099 void gotoxy(char x, char y)
00100 {
00101   if (x>MAX_X || y>MAX_Y)
00102     return;
00103   
00104   x--;
00105   y--;
00106 
00107   _putch(0x1B);
00108   _putch('[');
00109   _putch((y/10)+'0');
00110   _putch((y%10)+'0');
00111   _putch(';');
00112   _putch((x/10)+'0');
00113   _putch((x%10)+'0');
00114   _putch('f');
00115 }
00116 
00117 
00118 void _cputs(ROMDEF char *s)
00119 {
00120    while (*s != 0) 
00121     _putch(*s++);
00122 }
00123 
00124 char * _cgets(char *s)
00125 {
00126   char len;
00127   int ch;
00128   
00129   len=0;
00130 
00131   while (s[0]>len)
00132   {
00133     ch=_getch();
00134     
00135     if (ch==KB_ENTER)
00136       break; //enter hit, end of input
00137 
00138     if (ch==KB_ESC) {
00139       s[1]=0;
00140       s[2]=0;
00141       return &s[2]; 
00142     }
00143 
00144     
00145     if (ch==KB_BACK)
00146     {
00147       
00148         if (len>0) 
00149         {
00150             len--;
00151             //delete char and go back (if some chars left)
00152             _putch(KB_BACK);
00153             _putch(' '); 
00154             _putch(KB_BACK);
00155            
00156         }
00157          
00158          continue;
00159     }
00160 
00161     if (ch>0x80 || ch <' ') //skip functions keys
00162         continue;
00163   
00164     _putch((char)0xff&ch); //print back to screen
00165     s[len+2]=(char)0xff&ch;
00166     len++;
00167   }
00168   
00169   s[1]=len;
00170   s[len+2]=0;
00171 
00172   return &s[2]; 
00173 }