st.h

   1 /* See LICENSE for licence details. */
   2
   3 #define _XOPEN_SOURCE
   4 #include <ctype.h>
   5 #include <fcntl.h>
   6 #include <locale.h>
   7 #include <stdarg.h>
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <unistd.h>
  12 #include <sys/types.h>
  13 #include <sys/stat.h>
  14 #include <sys/select.h>
  15 #include <sys/ioctl.h>
  16 #include <X11/Xlib.h>
  17 #include <X11/keysym.h>
  18 #include <X11/Xutil.h>
  19
  20 /* special keys */
  21 #define KEYDELETE "\033[3~"
  22 #define KEYHOME   "\033[1~"
  23 #define KEYEND    "\033[4~"
  24 #define KEYPREV   "\033[5~"
  25 #define KEYNEXT   "\033[6~"
  26
  27 #define TNAME "st"
  28 #define SHELL "/bin/bash"
  29 #define TAB    8
  30
  31 #define FONT "-*-terminus-medium-r-normal-*-14-*-*-*-*-*-*-*"
  32 #define BORDER 3
  33 #define LINESPACE 1 /* additional pixel between each line */
  34
  35 /* Default colors */
  36 #define DefaultFG 7
  37 #define DefaultBG 0
  38 #define DefaultCS 1
  39 #define BellCol   DefaultFG /* visual bell color */
  40
  41 static char* colorname[] = {
  42         "black",
  43         "red",
  44         "green",
  45         "yellow",
  46         "blue",
  47         "magenta",
  48         "cyan",
  49         "white",
  50 };
  51
  52
  53 /* Arbitrary sizes */
  54 #define ESCSIZ 256
  55 #define ESCARG 16
  56
  57 #define MIN(a, b)  ((a) < (b) ? (a) : (b))
  58 #define MAX(a, b)  ((a) < (b) ? (b) : (a))
  59 #define LEN(a)     (sizeof(a) / sizeof(a[0]))
  60 #define DEFAULT(a, b)     (a) = (a) ? (a) : (b)
  61 #define BETWEEN(x, a, b)  ((a) <= (x) && (x) <= (b))
  62 #define LIMIT(x, a, b)    (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
  63
  64
  65 enum { ATnone=0 , ATreverse=1 , ATunderline=2, ATbold=4 }; /* Attribute */
  66 enum { CSup, CSdown, CSright, CSleft, CShide, CSdraw, CSwrap, CSsave, CSload }; /* Cursor */
  67 enum { CRset=1 , CRupdate=2 }; /* Character state */
  68 enum { TMwrap=1 , TMinsert=2 }; /* Terminal mode */
  69 enum { SCupdate, SCredraw }; /* screen draw mode */
  70
  71 #ifdef TRUECOLOR
  72 #error Truecolor not implemented yet
  73 typedef int Color;
  74 #else
  75 typedef char Color;
  76 #endif
  77
  78
  79 typedef struct {
  80         char c;     /* character code  */
  81         char mode;  /* attribute flags */
  82         Color fg;   /* foreground      */
  83         Color bg;   /* background      */
  84         char state; /* state flag      */
  85 } Glyph;
  86
  87 typedef Glyph* Line;
  88
  89 typedef struct {
  90         Glyph attr;  /* current char attributes */
  91         char hidden;
  92         int x;
  93         int y;
  94 } TCursor;
  95
  96 /* Escape sequence structs */
  97 typedef struct {
  98         char buf[ESCSIZ+1]; /* raw string */
  99         int len;            /* raw string length */
 100         /* ESC <pre> [[ [<priv>] <arg> [;]] <mode>] */
 101         char pre;
 102         char priv;
 103         int arg[ESCARG+1];
 104         int narg;           /* nb of args */
 105         char mode;
 106 } Escseq;
 107
 108 /* Internal representation of the screen */
 109 typedef struct {
 110         int row;    /* nb row */
 111         int col;    /* nb col */
 112         Line* line; /* screen */
 113         TCursor c;  /* cursor */
 114         int top;    /* top    scroll limit */
 115         int bot;    /* bottom scroll limit */
 116         int mode;   /* terminal mode */
 117 } Term;
 118
 119 /* Purely graphic info */
 120 typedef struct {
 121         Display* dis;
 122         Window win;
 123         int scr;
 124         int w;  /* window width  */
 125         int h;  /* window height */
 126         int ch; /* char height */
 127         int cw; /* char width  */
 128 } XWindow;
 129
 130 /* Drawing Context */
 131 typedef struct {
 132         unsigned long col[LEN(colorname)];
 133         XFontStruct* font;
 134         GC gc;
 135 } DC;
 136
 137
 138 void die(const char *errstr, ...);
 139 void draw(int);
 140 void execsh(void);
 141 void kpress(XKeyEvent *);
 142 void resize(XEvent *);
 143 void run(void);
 144
 145 int escaddc(char);
 146 int escfinal(char);
 147 void escdump(void);
 148 void eschandle(void);
 149 void escparse(void);
 150 void escreset(void);
 151
 152 void tclearregion(int, int, int, int);
 153 void tcpos(int);
 154 void tcursor(int);
 155 void tdeletechar(int);
 156 void tdeleteline(int);
 157 void tdump(void);
 158 void tinsertblank(int);
 159 void tinsertblankline(int);
 160 void tmoveto(int, int);
 161 void tnew(int, int);
 162 void tnewline(void);
 163 void tputc(char);
 164 void tputs(char*, int);
 165 void tresize(int, int);
 166 void tscroll(void);
 167 void tsetattr(int*, int);
 168 void tsetchar(char);
 169 void tsetscroll(int, int);
 170
 171 void ttynew(void);
 172 void ttyread(void);
 173 void ttyresize(int, int);
 174 void ttywrite(char *, size_t);
 175
 176 unsigned long xgetcol(const char *);
 177 void xclear(int, int, int, int);
 178 void xcursor(int);
 179 void xdrawc(int, int, Glyph);
 180 void xinit(void);
 181 void xscroll(void);