ui.c

00001 /*
00002     ui.c
00003     User interface functions.
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 "conio.h"
00022 #include "ui.h"
00023 #include "kbd.h"
00024 
00025 
00026 int runmenu(char x, char y, ROMDEF char *menu[], int defaultitem)
00027 {
00028   int keys[3], i,j, itemno;
00029   int nitems, width;
00030   ROMDEF char *s;
00031 
00032   itemno = defaultitem-1;
00033   width = 20;
00034 
00035   width = 10;
00036   nitems = 0;
00037   while (menu[nitems] != 0) {
00038     for (j=0;menu[nitems][j];j++);
00039     if (j>width)
00040      width = j;
00041     nitems++;
00042   }
00043   width+=2;
00044 
00045   if (itemno < 0 || itemno > nitems)
00046     itemno = 0;
00047 
00048   while (1) {
00049 
00050 
00051   cursoroff();
00052   textattr(CYAN<<4 | BLACK);
00053   gotoxy(x,y);
00054   _putch(ACS_ULCORNER);
00055   for (i=0;i<width+2;i++) 
00056     _putch(ACS_HLINE);
00057   _putch(ACS_URCORNER);
00058 
00059   for (i = 0;i<nitems;i++) {
00060       gotoxy(x,y+i+1);
00061       _putch(ACS_VLINE);
00062       _putch(' ');
00063       if (i == itemno)
00064         textattr(YELLOW);
00065       s = 0;
00066       for (j=0;j<width;j++) {
00067         if (s && *s)
00068           _putch(*s++);
00069         else _putch(' ');
00070         if (s == 0)
00071           s = (ROMDEF char *)menu[i];
00072       }
00073        textattr(CYAN<<4 | BLACK);
00074       _putch(' ');
00075       _putch(ACS_VLINE);
00076   }
00077 
00078   gotoxy(x,y+nitems+1);
00079   _putch(ACS_LLCORNER);
00080   for (i=0;i<width+2;i++) 
00081     _putch(ACS_HLINE);
00082   _putch(ACS_LRCORNER);
00083 
00084   
00085   while (!_kbhit()) ;
00086   
00087    if (_kbhit()) {
00088      keys[0] = keys[1];
00089      keys[1] = keys[2];
00090      keys[2] = _getch();
00091      if (keys[0] == 0x1b && keys[1] == 0x5b)
00092      {
00093         switch (keys[2]) {
00094           case 'A': if (itemno>0) itemno--;  else itemno = nitems-1; break;
00095           case 'B': itemno++; itemno %= nitems; break;
00096         }
00097      }
00098      else
00099          switch(keys[0]) {
00100           case KB_ENTER : cursoron(); return itemno+1;
00101           case KB_ESC: cursoron(); return 0;
00102          } 
00103    } 
00104   }
00105 }
00106 
00107 
00108 
00109 void drawfkeys(ROMDEF char *fkeys[])
00110 {
00111  ROMDEF char *s;
00112  int i, j;
00113 
00114  gotoxy(1,25);
00115  for (i=0;i<10;i++) {
00116    textcolor(WHITE);
00117    textbackground(BLACK);
00118    if (i!= 0)
00119     _putch(' ');
00120    if (i== 9) {
00121     _putch('1');
00122     _putch('0');
00123    } else
00124    _putch((i%10)+'1');
00125    textcolor(BLACK);
00126    textbackground(CYAN);
00127 
00128   s = fkeys[i] ? fkeys[i] : 0;
00129   for (j=0;j<6;j++) {
00130    if (s && *s)
00131     _putch(*s++);
00132    else _putch(' ');
00133   }
00134  }
00135 }
00136 
00137 void drawframe(int x, int y, int width, int height, int color)
00138 {
00139   int i,j;
00140   
00141   textattr(color);
00142   gotoxy(x,y);
00143   
00144   _putch(ACS_ULCORNER);
00145   for (i=0;i<width+2;i++) 
00146     _putch(ACS_HLINE);
00147   _putch(ACS_URCORNER);
00148   
00149   for (i = 0;i<height;i++) {
00150       gotoxy(x,y+i+1);
00151       _putch(ACS_VLINE);
00152       _putch(' ');
00153    
00154    for (j=0;j<width;j++) {
00155         _putch(' ');
00156       }
00157           _putch(' ');
00158       _putch(ACS_VLINE);
00159   }
00160  
00161   gotoxy(x,y+height+1);
00162   _putch(ACS_LLCORNER);
00163   for (i=0;i<width+2;i++) 
00164     _putch(ACS_HLINE);
00165   _putch(ACS_LRCORNER);
00166 }