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 }
  34
  35 void display_cleanup(void)
  36 {
  37     endwin();
  38 }
  39
  40 void display_moveto(int y, int x)
  41 {
  42     wmove(stdscr, y, x);
  43 }
  44
  45 void display_refresh(void)
  46 {
  47     refresh();
  48 }
  49
  50 void display_write_str(char *str)
  51 {
  52     waddstr(stdscr, str);
  53 }
  54
  55 void display_write_chars(char *str, int len)
  56 {
  57     waddnstr(stdscr, str, len);
  58 }
  59
  60 #define MAXCOLOURS 32
  61 int attrs[MAXCOLOURS];
  62
  63 void display_define_colour(int colour, int fg, int bg)
  64 {
  65     static int colours[8] = {
  66         COLOR_BLACK,
  67         COLOR_RED,
  68         COLOR_GREEN,
  69         COLOR_YELLOW,
  70         COLOR_BLUE,
  71         COLOR_MAGENTA,
  72         COLOR_CYAN,
  73         COLOR_WHITE,
  74     };
  75
  76     assert(colour >= 0 && colour < MAXCOLOURS && colour < COLOR_PAIRS-2);
  77
  78     assert(!(bg & ~7));                /* bold backgrounds are nonportable */
  79     init_pair(colour+1, colours[fg & 7], colours[bg]);
  80     attrs[colour] = (fg & 8 ? A_BOLD : 0) | COLOR_PAIR(colour+1);
  81 }
  82
  83 void display_set_colour(int colour)
  84 {
  85     wattrset(stdscr, attrs[colour]);
  86 }
  87
  88 void display_clear_to_eol(void)
  89 {
  90     wclrtoeol(stdscr);
  91 }
  92
  93 int last_getch = ERR;
  94
  95 int display_getkey(void)
  96 {
  97     int ret;
  98     extern void schedule_update(void);
  99
 100     if (last_getch != ERR) {
 101         int ret = last_getch;
 102         last_getch = ERR;
 103         return ret;
 104     }
 105     while (1) {
 106         ret = getch();
 107         if (ret == KEY_RESIZE) {
 108             schedule_update();
 109             continue;
 110         }
 111         return ret;
 112     }
 113 }
 114
 115 int display_input_to_flush(void)
 116 {
 117     int ret;
 118     if (last_getch != ERR)
 119         return TRUE;
 120
 121     nodelay(stdscr, 1);
 122     ret = getch();
 123     nodelay(stdscr, 0);
 124     if (ret == ERR)
 125         return FALSE;
 126
 127     last_getch = ret;
 128     return TRUE;
 129 }
 130
 131 void display_post_error(void)
 132 {
 133     /* I don't _think_ we need do anything here */
 134 }
 135
 136 void display_recheck_size(void)
 137 {
 138     get_screen_size ();
 139 }