console/ncurses.c

   1 /* ncurses.c */
   2 /* Copyright 1999 - Joseph Pranevich */
   3
   4 #include <stdio.h>
   5 #include "config.h"
   6 #include "console.h"    /* Must define WINE_NCURSES */
   7
   8 #ifdef WINE_NCURSES
   9
  10 /* This is the console driver for systems that support the ncurses
  11    interface.
  12 */
  13
  14 /* Actually, this should work for curses, as well. But there may be
  15    individual functions that are unsupported in plain curses or other
  16    variants. Those should be detected and special-cased by autoconf.
  17 */
  18
  19 /* When creating new drivers, you need to assign all the functions that
  20    that driver supports into the driver struct. If it is a supplementary
  21    driver, it should make sure to perserve the old values.
  22 */
  23
  24 #include "debugtools.h"
  25 #include "options.h"
  26
  27 DEFAULT_DEBUG_CHANNEL(console);
  28
  29 #undef ERR /* Use ncurses's err() */
  30 #ifdef HAVE_NCURSES_H
  31 # include <ncurses.h>
  32 #else
  33 # ifdef HAVE_CURSES_H
  34 #  include <curses.h>
  35 # endif
  36 #endif
  37
  38 SCREEN *ncurses_screen;
  39
  40 static int get_color_pair(int fg_color, int bg_color);
  41
  42 const char *color_names[] = {"null", "black", "blue", "green",
  43    "cyan", "magenta", "brown", "red", "light gray", "dark gray",
  44    "light blue", "light green", "light red", "light magenta",
  45    "light cyan", "yellow", "white"};
  46
  47 void NCURSES_Start()
  48 {
  49    /* This should be the root driver so we can ignore anything
  50       already in the struct. */
  51
  52    driver.norefresh = FALSE;
  53
  54    driver.init = NCURSES_Init;
  55    driver.write = NCURSES_Write;
  56    driver.close = NCURSES_Close;
  57    driver.moveCursor = NCURSES_MoveCursor;
  58    driver.getCursorPosition = NCURSES_GetCursorPosition;
  59    driver.getCharacterAtCursor = NCURSES_GetCharacterAtCursor;
  60    driver.clearScreen = NCURSES_ClearScreen;
  61    driver.allocColor = NCURSES_AllocColor;
  62 #ifdef HAVE_GETBKGD
  63    driver.setBackgroundColor = NCURSES_SetBackgroundColor;
  64 #endif
  65 #ifdef HAVE_RESIZETERM
  66    driver.notifyResizeScreen = NCURSES_NotifyResizeScreen;
  67 #endif /* HAVE_RESIZETERM */
  68
  69    driver.checkForKeystroke = NCURSES_CheckForKeystroke;
  70    driver.getKeystroke = NCURSES_GetKeystroke;
  71
  72    driver.refresh = NCURSES_Refresh;
  73 }
  74
  75 void NCURSES_Init()
  76 {
  77    char terminal_type[80];
  78
  79    PROFILE_GetWineIniString("console", "TerminalType",
  80       "xterm", terminal_type, 79);
  81
  82    ncurses_screen = newterm(terminal_type, driver.console_out,
  83       driver.console_in);
  84    set_term(ncurses_screen);
  85    start_color();
  86    raw();
  87    noecho();
  88    nonl();
  89    intrflush(stdscr, FALSE);
  90    keypad(stdscr, TRUE);
  91    nodelay(stdscr, TRUE);
  92 }
  93
  94 void NCURSES_Write(char output, int fg, int bg, int attribute)
  95 {
  96    char row, col;
  97    int pair;
  98
  99    if (!fg)
 100       fg = COLOR_WHITE; /* Default */
 101
 102    if (!bg)
 103       bg = COLOR_BLACK; /* Default */
 104
 105    pair = get_color_pair(fg, bg);
 106
 107    if (waddch(stdscr, output | COLOR_PAIR(pair)) == ERR)
 108    {
 109       NCURSES_GetCursorPosition(&row, &col);
 110       FIXME("NCURSES: waddch() failed at %d, %d.\n", row, col);
 111    }
 112 }
 113
 114 void NCURSES_Close()
 115 {
 116    endwin();
 117 }
 118
 119 void NCURSES_GetKeystroke(char *scan, char *ascii)
 120 {
 121    while (!NCURSES_CheckForKeystroke(scan, ascii))
 122    {} /* Wait until keystroke is detected */
 123
 124    /* When it is detected, we will already have the right value
 125       in scan and ascii, but we need to take this keystroke
 126       out of the buffer. */
 127    wgetch(stdscr);
 128 }
 129
 130 int NCURSES_CheckForKeystroke(char *scan, char *ascii)
 131 {
 132    /* We don't currently support scan codes here */
 133    /* FIXME */
 134    int temp;
 135    temp = wgetch(stdscr);
 136    if (temp == ERR)
 137    {
 138       return FALSE;
 139    }
 140    else
 141    {
 142       ungetch(temp);  /* Keystroke not removed from buffer */
 143       *ascii = (char) temp;
 144       return TRUE;
 145    }
 146 }
 147
 148 void NCURSES_MoveCursor(char row, char col)
 149 {
 150    if (wmove(stdscr, row, col) == ERR)
 151       FIXME("NCURSES: wmove() failed to %d, %d.\n", row, col);
 152 }
 153
 154 void NCURSES_GetCursorPosition(char *row, char *col)
 155 {
 156    int trow, tcol;
 157
 158    getyx(stdscr, trow, tcol); /* MACRO, no need to pass pointer */
 159
 160    *row = (char) trow;
 161    *col = (char) tcol;
 162 }
 163
 164 void NCURSES_GetCharacterAtCursor(char *ch, int *fg_color, int
 165    *bg_color, int *attribute)
 166 {
 167    /* If any of the pointers are NULL, ignore them */
 168    /* We will eventually have to convert the color data */
 169    if (ch)
 170       *ch = (char) winch(stdscr);
 171    if (fg_color)
 172       *fg_color = WINE_WHITE;
 173    if (bg_color)
 174       *bg_color = WINE_BLACK;
 175    if (attribute)
 176       *attribute = 0;
 177 }
 178
 179 void NCURSES_Refresh()
 180 {
 181    wrefresh(stdscr);
 182 }
 183
 184 void NCURSES_ClearScreen()
 185 {
 186    werase(stdscr);
 187 }
 188
 189 int NCURSES_AllocColor(int color)
 190 {
 191    /* Currently support only internal colors */
 192    switch (color)
 193    {
 194       case WINE_BLACK:          return COLOR_BLACK;
 195       case WINE_WHITE:          return COLOR_WHITE;
 196       case WINE_RED:            return COLOR_RED;
 197       case WINE_GREEN:          return COLOR_GREEN;
 198       case WINE_YELLOW:         return COLOR_YELLOW;
 199       case WINE_BLUE:           return COLOR_BLUE;
 200       case WINE_MAGENTA:        return COLOR_MAGENTA;
 201       case WINE_CYAN:           return COLOR_CYAN;
 202    }
 203
 204    FIXME("Unable to allocate color %d (%s)\n", color,
 205       color_names[color]);
 206
 207    /* Don't allocate a color... yet */
 208    return 0;
 209 }
 210
 211 void NCURSES_SetBackgroundColor(int fg, int bg)
 212 {
 213    int pair;
 214
 215    pair = get_color_pair(fg, bg);
 216
 217    wbkgd(stdscr, COLOR_PAIR(pair));
 218 }
 219
 220 #ifdef HAVE_GETBKGD
 221 void NCURSES_GetBackgroundColor(int *fg, int *bg)
 222 {
 223    chtype background;
 224    short pair, sfg, sbg;
 225
 226    background = getbkgd(stdscr);
 227
 228    pair = (!A_CHARTEXT & background);
 229
 230    pair_content(pair, &sfg, &sbg);
 231
 232    *fg = sfg;
 233    *bg = sbg;
 234 }
 235 #endif /* HAVE_GETBKGD */
 236
 237 #ifdef HAVE_RESIZETERM
 238
 239 void NCURSES_NotifyResizeScreen(int x, int y)
 240 {
 241    /* Note: This function gets called *after* another driver in the chain
 242       calls ResizeScreen(). It is meant to resize the ncurses internal
 243       data structures to know about the new window dimensions. */
 244
 245    TRACE("Terminal resized to y: %d, x: %d\n", y, x);
 246
 247    resizeterm(y, x);
 248 }
 249
 250 #endif /* HAVE_RESIZETERM */
 251
 252 static int get_color_pair(int fg_color, int bg_color)
 253 {
 254    /* ncurses internally uses "color pairs" in addition to the "pallet" */
 255    /* This isn't the best way to do this. Or even close */
 256
 257    static int current = 0;
 258    static int fg[255];     /* 16 x 16 is enough */
 259    static int bg[255];
 260    int x;
 261
 262    /* The first pair is hardwired into ncurses */
 263    fg[0] = COLOR_WHITE;
 264    bg[0] = COLOR_BLACK;
 265
 266    for (x = 0; x <= current; x++)
 267    {
 268       if ((fg_color == fg[x]) && (bg_color == bg[x]))
 269       {
 270          TRACE("Color pair: already allocated\n");
 271          return x;
 272       }
 273    }
 274
 275    /* Need to allocate new color */
 276    current++;
 277    fg[current] = fg_color;
 278    bg[current] = bg_color;
 279    TRACE("Color pair: allocated.\n");
 280    return init_pair(current, fg_color, bg_color);
 281 }
 282
 283 #endif /* WINE_NCURSES */