st.h

   1 /* See LICENSE for license details. */
   2
   3 /* Arbitrary sizes */
   4 #define UTF_SIZ       4
   5
   6 /* macros */
   7 #define MIN(a, b)               ((a) < (b) ? (a) : (b))
   8 #define MAX(a, b)               ((a) < (b) ? (b) : (a))
   9 #define LEN(a)                  (sizeof(a) / sizeof(a)[0])
  10 #define BETWEEN(x, a, b)        ((a) <= (x) && (x) <= (b))
  11 #define DIVCEIL(n, d)           (((n) + ((d) - 1)) / (d))
  12 #define DEFAULT(a, b)           (a) = (a) ? (a) : (b)
  13 #define LIMIT(x, a, b)          (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
  14 #define ATTRCMP(a, b)           ((a).mode != (b).mode || (a).fg != (b).fg || \
  15                                 (a).bg != (b).bg)
  16 #define TIMEDIFF(t1, t2)        ((t1.tv_sec-t2.tv_sec)*1000 + \
  17                                 (t1.tv_nsec-t2.tv_nsec)/1E6)
  18 #define MODBIT(x, set, bit)     ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
  19
  20 #define TRUECOLOR(r,g,b)        (1 << 24 | (r) << 16 | (g) << 8 | (b))
  21 #define IS_TRUECOL(x)           (1 << 24 & (x))
  22
  23 enum glyph_attribute {
  24         ATTR_NULL       = 0,
  25         ATTR_BOLD       = 1 << 0,
  26         ATTR_FAINT      = 1 << 1,
  27         ATTR_ITALIC     = 1 << 2,
  28         ATTR_UNDERLINE  = 1 << 3,
  29         ATTR_BLINK      = 1 << 4,
  30         ATTR_REVERSE    = 1 << 5,
  31         ATTR_INVISIBLE  = 1 << 6,
  32         ATTR_STRUCK     = 1 << 7,
  33         ATTR_WRAP       = 1 << 8,
  34         ATTR_WIDE       = 1 << 9,
  35         ATTR_WDUMMY     = 1 << 10,
  36         ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
  37 };
  38
  39 enum selection_mode {
  40         SEL_IDLE = 0,
  41         SEL_EMPTY = 1,
  42         SEL_READY = 2
  43 };
  44
  45 enum selection_type {
  46         SEL_REGULAR = 1,
  47         SEL_RECTANGULAR = 2
  48 };
  49
  50 enum selection_snap {
  51         SNAP_WORD = 1,
  52         SNAP_LINE = 2
  53 };
  54
  55 typedef unsigned char uchar;
  56 typedef unsigned int uint;
  57 typedef unsigned long ulong;
  58 typedef unsigned short ushort;
  59
  60 typedef uint_least32_t Rune;
  61
  62 #define Glyph Glyph_
  63 typedef struct {
  64         Rune u;           /* character code */
  65         ushort mode;      /* attribute flags */
  66         uint32_t fg;      /* foreground  */
  67         uint32_t bg;      /* background  */
  68 } Glyph;
  69
  70 typedef Glyph *Line;
  71
  72 typedef struct {
  73         Glyph attr; /* current char attributes */
  74         int x;
  75         int y;
  76         char state;
  77 } TCursor;
  78
  79 /* Internal representation of the screen */
  80 typedef struct {
  81         int row;      /* nb row */
  82         int col;      /* nb col */
  83         Line *line;   /* screen */
  84         Line *alt;    /* alternate screen */
  85         int *dirty;   /* dirtyness of lines */
  86         TCursor c;    /* cursor */
  87         int ocx;      /* old cursor col */
  88         int ocy;      /* old cursor row */
  89         int top;      /* top    scroll limit */
  90         int bot;      /* bottom scroll limit */
  91         int mode;     /* terminal mode flags */
  92         int esc;      /* escape state flags */
  93         char trantbl[4]; /* charset table translation */
  94         int charset;  /* current charset */
  95         int icharset; /* selected charset for sequence */
  96         int *tabs;
  97 } Term;
  98
  99 /* Purely graphic info */
 100 typedef struct {
 101         int tw, th; /* tty width and height */
 102         int w, h; /* window width and height */
 103         int ch; /* char height */
 104         int cw; /* char width  */
 105         int mode; /* window state/mode flags */
 106         int cursor; /* cursor style */
 107 } TermWindow;
 108
 109 typedef struct {
 110         int mode;
 111         int type;
 112         int snap;
 113         /*
 114          * Selection variables:
 115          * nb – normalized coordinates of the beginning of the selection
 116          * ne – normalized coordinates of the end of the selection
 117          * ob – original coordinates of the beginning of the selection
 118          * oe – original coordinates of the end of the selection
 119          */
 120         struct {
 121                 int x, y;
 122         } nb, ne, ob, oe;
 123
 124         int alt;
 125 } Selection;
 126
 127 typedef union {
 128         int i;
 129         uint ui;
 130         float f;
 131         const void *v;
 132 } Arg;
 133
 134 void die(const char *, ...);
 135 void redraw(void);
 136 void draw(void);
 137
 138 void iso14755(const Arg *);
 139 void printscreen(const Arg *);
 140 void printsel(const Arg *);
 141 void sendbreak(const Arg *);
 142 void toggleprinter(const Arg *);
 143
 144 int tattrset(int);
 145 void tnew(int, int);
 146 void tresize(int, int);
 147 void tsetdirtattr(int);
 148 void ttynew(char *, char *, char **);
 149 size_t ttyread(void);
 150 void ttyresize(int, int);
 151 void ttywrite(const char *, size_t, int);
 152
 153 void resettitle(void);
 154
 155 void selclear(void);
 156 void selinit(void);
 157 void selstart(int, int, int);
 158 void selextend(int, int, int, int);
 159 void selnormalize(void);
 160 int selected(int, int);
 161 char *getsel(void);
 162
 163 size_t utf8decode(const char *, Rune *, size_t);
 164 size_t utf8encode(Rune, char *);
 165
 166 void *xmalloc(size_t);
 167 void *xrealloc(void *, size_t);
 168 char *xstrdup(char *);
 169
 170 /* Globals */
 171 extern Term term;
 172 extern int cmdfd;
 173 extern pid_t pid;
 174 extern int oldbutton;
 175
 176 /* config.h globals */
 177 extern char *shell;
 178 extern char *utmp;
 179 extern char *stty_args;
 180 extern char *vtiden;
 181 extern char *worddelimiters;
 182 extern int allowaltscreen;
 183 extern char *termname;
 184 extern unsigned int tabspaces;
 185 extern unsigned int defaultfg;
 186 extern unsigned int defaultbg;