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 /* Purely graphic info */
  80 typedef struct {
  81         int tw, th; /* tty width and height */
  82         int w, h; /* window width and height */
  83         int ch; /* char height */
  84         int cw; /* char width  */
  85         int mode; /* window state/mode flags */
  86         int cursor; /* cursor style */
  87 } TermWindow;
  88
  89 typedef struct {
  90         int mode;
  91         int type;
  92         int snap;
  93         /*
  94          * Selection variables:
  95          * nb – normalized coordinates of the beginning of the selection
  96          * ne – normalized coordinates of the end of the selection
  97          * ob – original coordinates of the beginning of the selection
  98          * oe – original coordinates of the end of the selection
  99          */
 100         struct {
 101                 int x, y;
 102         } nb, ne, ob, oe;
 103
 104         int alt;
 105 } Selection;
 106
 107 typedef union {
 108         int i;
 109         uint ui;
 110         float f;
 111         const void *v;
 112 } Arg;
 113
 114 void die(const char *, ...);
 115 void redraw(void);
 116 void draw(void);
 117
 118 void iso14755(const Arg *);
 119 void printscreen(const Arg *);
 120 void printsel(const Arg *);
 121 void sendbreak(const Arg *);
 122 void toggleprinter(const Arg *);
 123
 124 int tattrset(int);
 125 void tnew(int, int);
 126 void tresize(int, int);
 127 void tsetdirtattr(int);
 128 void ttynew(char *, char *, char **);
 129 size_t ttyread(void);
 130 void ttyresize(int, int);
 131 void ttywrite(const char *, size_t, int);
 132
 133 void resettitle(void);
 134
 135 void selclear(void);
 136 void selinit(void);
 137 void selstart(int, int, int);
 138 void selextend(int, int, int, int);
 139 void selnormalize(void);
 140 int selected(int, int);
 141 char *getsel(void);
 142
 143 size_t utf8decode(const char *, Rune *, size_t);
 144 size_t utf8encode(Rune, char *);
 145
 146 void *xmalloc(size_t);
 147 void *xrealloc(void *, size_t);
 148 char *xstrdup(char *);
 149
 150 /* Globals */
 151 extern int cmdfd;
 152 extern pid_t pid;
 153 extern int oldbutton;
 154
 155 /* config.h globals */
 156 extern char *shell;
 157 extern char *utmp;
 158 extern char *stty_args;
 159 extern char *vtiden;
 160 extern char *worddelimiters;
 161 extern int allowaltscreen;
 162 extern char *termname;
 163 extern unsigned int tabspaces;
 164 extern unsigned int defaultfg;
 165 extern unsigned int defaultbg;