mdw@git.distorted.org.uk Git - sgt/tweak/blob - curses.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <ctype.h>
   5 #include <assert.h>
   6
   7 #include <curses.h>
   8
   9 #include "tweak.h"
  10
  11 int display_rows, display_cols;
  12
  13 void display_beep(void)
  14 {
  15     beep();
  16 }
  17
  18 static void get_screen_size (void) {
  19     getmaxyx(stdscr, display_rows, display_cols);
  20 }
  21
  22 void display_setup(void)
  23 {
  24     initscr();
  25     noecho();
  26     keypad(stdscr, 0);
  27     raw();
  28     move(0,0);
  29     refresh();
  30     get_screen_size();
  31     if (has_colors()) {
  32         start_color();
  33         use_default_colors();
  34     }
  35 }
  36
  37 void display_cleanup(void)
  38 {
  39     endwin();
  40 }
  41
  42 void display_moveto(int y, int x)
  43 {
  44     wmove(stdscr, y, x);
  45 }
  46
  47 void display_refresh(void)
  48 {
  49     refresh();
  50 }
  51
  52 void display_write_str(char *str)
  53 {
  54     waddstr(stdscr, str);
  55 }
  56
  57 void display_write_chars(char *str, int len)
  58 {
  59     waddnstr(stdscr, str, len);
  60 }
  61
  62 #define MAXCOLOURS 32
  63 int attrs[MAXCOLOURS];
  64
  65 void display_define_colour(int colour, int fg, int bg, int reverse)
  66 {
  67     static int colours[8] = {
  68         COLOR_BLACK,
  69         COLOR_RED,
  70         COLOR_GREEN,
  71         COLOR_YELLOW,
  72         COLOR_BLUE,
  73         COLOR_MAGENTA,
  74         COLOR_CYAN,
  75         COLOR_WHITE,
  76     };
  77
  78     if (fg < 0 && bg < 0) {
  79         attrs[colour] = 0;
  80     } else {
  81         assert(colour >= 0 && colour < MAXCOLOURS);
  82         assert(!(bg & ~7));            /* bold backgrounds are nonportable */
  83         if (colour < COLOR_PAIRS-2) {
  84             init_pair(colour+1, colours[fg & 7], colours[bg]);
  85             attrs[colour] = (fg & 8 ? A_BOLD : 0) | COLOR_PAIR(colour+1);
  86         } else {
  87             /* can't allocate a colour pair, so we just use b&w attrs */
  88             attrs[colour] = (fg & 8 ? A_BOLD : 0) | (reverse ? A_REVERSE : 0);
  89         }
  90     }
  91 }
  92
  93 void display_set_colour(int colour)
  94 {
  95     wattrset(stdscr, attrs[colour]);
  96 }
  97
  98 void display_clear_to_eol(void)
  99 {
 100     wclrtoeol(stdscr);
 101 }
 102
 103 int last_getch = ERR;
 104
 105 int display_getkey(void)
 106 {
 107     int ret;
 108     extern void schedule_update(void);
 109
 110     if (last_getch != ERR) {
 111         int ret = last_getch;
 112         last_getch = ERR;
 113         return ret;
 114     }
 115     while (1) {
 116         ret = getch();
 117         if (ret == KEY_RESIZE) {
 118             schedule_update();
 119             continue;
 120         }
 121         return ret;
 122     }
 123 }
 124
 125 int display_input_to_flush(void)
 126 {
 127     int ret;
 128     if (last_getch != ERR)
 129         return TRUE;
 130
 131     nodelay(stdscr, 1);
 132     ret = getch();
 133     nodelay(stdscr, 0);
 134     if (ret == ERR)
 135         return FALSE;
 136
 137     last_getch = ret;
 138     return TRUE;
 139 }
 140
 141 void display_post_error(void)
 142 {
 143     /* I don't _think_ we need do anything here */
 144 }
 145
 146 void display_recheck_size(void)
 147 {
 148     get_screen_size ();
 149 }