st.h

   1 /* See LICENSE for licence details. */
   2 #define _XOPEN_SOURCE
   3 #include <ctype.h>
   4 #include <fcntl.h>
   5 #include <locale.h>
   6 #include <stdarg.h>
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9 #include <string.h>
  10 #include <sys/ioctl.h>
  11 #include <sys/select.h>
  12 #include <sys/stat.h>
  13 #include <sys/types.h>
  14 #include <unistd.h>
  15 #include <X11/Xlib.h>
  16 #include <X11/keysym.h>
  17 #include <X11/Xutil.h>
  18
  19 /* special keys */
  20 #define KEYDELETE "\033[3~"
  21 #define KEYHOME   "\033[1~"
  22 #define KEYEND    "\033[4~"
  23 #define KEYPREV   "\033[5~"
  24 #define KEYNEXT   "\033[6~"
  25
  26 #define TNAME "st"
  27 #define SHELL "/bin/bash"
  28 #define TAB    8
  29
  30 #define FONT "fixed"
  31 #define BORDER 3
  32 #define LINESPACE 1 /* additional pixel between each line */
  33
  34 /* Default colors */
  35 #define DefaultFG 7
  36 #define DefaultBG 0
  37 #define DefaultCS 1
  38 #define BellCol   DefaultFG /* visual bell color */
  39
  40 static char* colorname[] = {
  41         "black",
  42         "red",
  43         "green",
  44         "yellow",
  45         "blue",
  46         "magenta",
  47         "cyan",
  48         "white",
  49 };
  50
  51 /* Arbitrary sizes */
  52 #define ESCSIZ 256
  53 #define ESCARG 16
  54
  55 #define MIN(a, b)  ((a) < (b) ? (a) : (b))
  56 #define MAX(a, b)  ((a) < (b) ? (b) : (a))
  57 #define LEN(a)     (sizeof(a) / sizeof(a[0]))
  58 #define DEFAULT(a, b)     (a) = (a) ? (a) : (b)
  59 #define BETWEEN(x, a, b)  ((a) <= (x) && (x) <= (b))
  60 #define LIMIT(x, a, b)    (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
  61
  62
  63 enum { ATnone=0 , ATreverse=1 , ATunderline=2, ATbold=4 }; /* Attribute */
  64 enum { CSup, CSdown, CSright, CSleft, CShide, CSdraw, CSwrap, CSsave, CSload }; /* Cursor */
  65 enum { CRset=1 , CRupdate=2 }; /* Character state */
  66 enum { TMwrap=1 , TMinsert=2 }; /* Terminal mode */
  67 enum { SCupdate, SCredraw }; /* screen draw mode */
  68
  69 typedef int Color;
  70
  71 typedef struct {
  72         char c;     /* character code  */
  73         char mode;  /* attribute flags */
  74         Color fg;   /* foreground      */
  75         Color bg;   /* background      */
  76         char state; /* state flag      */
  77 } Glyph;
  78
  79 typedef Glyph* Line;
  80
  81 typedef struct {
  82         Glyph attr;  /* current char attributes */
  83         char hidden;
  84         int x;
  85         int y;
  86 } TCursor;
  87
  88 /* Escape sequence structs */
  89 typedef struct {
  90         char buf[ESCSIZ+1]; /* raw string */
  91         int len;            /* raw string length */
  92         /* ESC <pre> [[ [<priv>] <arg> [;]] <mode>] */
  93         char pre;
  94         char priv;
  95         int arg[ESCARG+1];
  96         int narg;           /* nb of args */
  97         char mode;
  98 } Escseq;
  99
 100 /* Internal representation of the screen */
 101 typedef struct {
 102         int row;    /* nb row */
 103         int col;    /* nb col */
 104         Line* line; /* screen */
 105         TCursor c;  /* cursor */
 106         int top;    /* top    scroll limit */
 107         int bot;    /* bottom scroll limit */
 108         int mode;   /* terminal mode */
 109 } Term;
 110
 111 /* Purely graphic info */
 112 typedef struct {
 113         Display* dis;
 114         Window win;
 115         int scr;
 116         int w;  /* window width  */
 117         int h;  /* window height */
 118         int ch; /* char height */
 119         int cw; /* char width  */
 120 } XWindow;
 121
 122 /* Drawing Context */
 123 typedef struct {
 124         unsigned long col[LEN(colorname)];
 125         XFontStruct* font;
 126         GC gc;
 127 } DC;
 128
 129
 130 void die(const char *errstr, ...);
 131 void draw(int);
 132 void execsh(void);
 133 void kpress(XKeyEvent *);
 134 void resize(XEvent *);
 135 void run(void);
 136
 137 int escaddc(char);
 138 int escfinal(char);
 139 void escdump(void);
 140 void eschandle(void);
 141 void escparse(void);
 142 void escreset(void);
 143
 144 void tclearregion(int, int, int, int);
 145 void tcpos(int);
 146 void tcursor(int);
 147 void tdeletechar(int);
 148 void tdeleteline(int);
 149 void tdump(void);
 150 void tinsertblank(int);
 151 void tinsertblankline(int);
 152 void tmoveto(int, int);
 153 void tnew(int, int);
 154 void tnewline(void);
 155 void tputc(char);
 156 void tputs(char*, int);
 157 void tresize(int, int);
 158 void tscroll(void);
 159 void tsetattr(int*, int);
 160 void tsetchar(char);
 161 void tsetscroll(int, int);
 162
 163 void ttynew(void);
 164 void ttyread(void);
 165 void ttyresize(int, int);
 166 void ttywrite(char *, size_t);
 167
 168 unsigned long xgetcol(const char *);
 169 void xclear(int, int, int, int);
 170 void xcursor(int);
 171 void xdrawc(int, int, Glyph);
 172 void xinit(void);
 173 void xscroll(void);