st.h

/* See LICENSE for license details. */

#include <stdint.h>
#include <sys/types.h>

#include <X11/Xatom.h>
#include <X11/Xlib.h>
#include <X11/cursorfont.h>
#include <X11/keysym.h>
#include <X11/Xft/Xft.h>
#include <X11/XKBlib.h>

/* Arbitrary size */
#define HISTSIZE      2000

/* macros */
#define MIN(a, b)		((a) < (b) ? (a) : (b))
#define MAX(a, b)		((a) < (b) ? (b) : (a))
#define LEN(a)			(sizeof(a) / sizeof(a)[0])
#define BETWEEN(x, a, b)	((a) <= (x) && (x) <= (b))
#define DIVCEIL(n, d)		(((n) + ((d) - 1)) / (d))
#define DEFAULT(a, b)		(a) = (a) ? (a) : (b)
#define LIMIT(x, a, b)		(x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
#define ATTRCMP(a, b)		((a).mode != (b).mode || (a).fg != (b).fg || \
				(a).bg != (b).bg)
#define TIMEDIFF(t1, t2)	((t1.tv_sec-t2.tv_sec)*1000 + \
				(t1.tv_nsec-t2.tv_nsec)/1E6)
#define MODBIT(x, set, bit)	((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))

#define TRUECOLOR(r,g,b)	(1 << 24 | (r) << 16 | (g) << 8 | (b))
#define IS_TRUECOL(x)		(1 << 24 & (x))
#define TLINE(y)       ((y) < term.scr ? term.hist[((y) + term.histi - term.scr \
               + HISTSIZE + 1) % HISTSIZE] : term.line[(y) - term.scr])

enum term_mode {
	MODE_WRAP        = 1 << 0,
	MODE_INSERT      = 1 << 1,
	MODE_ALTSCREEN   = 1 << 2,
	MODE_CRLF        = 1 << 3,
	MODE_ECHO        = 1 << 4,
	MODE_PRINT       = 1 << 5,
	MODE_UTF8        = 1 << 6,
	MODE_SIXEL       = 1 << 7,
};

enum glyph_attribute {
	ATTR_NULL       = 0,
	ATTR_BOLD       = 1 << 0,
	ATTR_FAINT      = 1 << 1,
	ATTR_ITALIC     = 1 << 2,
	ATTR_UNDERLINE  = 1 << 3,
	ATTR_BLINK      = 1 << 4,
	ATTR_REVERSE    = 1 << 5,
	ATTR_INVISIBLE  = 1 << 6,
	ATTR_STRUCK     = 1 << 7,
	ATTR_WRAP       = 1 << 8,
	ATTR_WIDE       = 1 << 9,
	ATTR_WDUMMY     = 1 << 10,
	ATTR_SIXEL      = 1 << 11,
	ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
};

typedef struct _ImageList {
	struct _ImageList *next, *prev;
	unsigned char *pixels;
	void *pixmap;
	int width;
	int height;
	int x;
	int y;
	int should_delete;
} ImageList;

enum selection_mode {
	SEL_IDLE = 0,
	SEL_EMPTY = 1,
	SEL_READY = 2
};

enum selection_type {
	SEL_REGULAR = 1,
	SEL_RECTANGULAR = 2
};

enum selection_snap {
	SNAP_WORD = 1,
	SNAP_LINE = 2
};

typedef unsigned char uchar;
typedef unsigned int uint;
typedef unsigned long ulong;
typedef unsigned short ushort;

typedef uint_least32_t Rune;

typedef XftDraw *Draw;
typedef XftColor Color;
typedef XftGlyphFontSpec GlyphFontSpec;

#define Glyph Glyph_
typedef struct {
	Rune u;           /* character code */
	ushort mode;      /* attribute flags */
	uint32_t fg;      /* foreground  */
	uint32_t bg;      /* background  */
} Glyph;

typedef Glyph *Line;

typedef struct {
	Glyph attr; /* current char attributes */
	int x;
	int y;
	char state;
} TCursor;

/* Internal representation of the screen */
typedef struct {
	int row;      /* nb row */
	int col;      /* nb col */
	Line *line;   /* screen */
	Line *alt;    /* alternate screen */
	Line hist[HISTSIZE]; /* history buffer */
	int histi;    /* history index */
	int scr;      /* scroll back */
	int *dirty;   /* dirtyness of lines */
	TCursor c;    /* cursor */
	int ocx;      /* old cursor col */
	int ocy;      /* old cursor row */
	int top;      /* top    scroll limit */
	int bot;      /* bottom scroll limit */
	int mode;     /* terminal mode flags */
	int esc;      /* escape state flags */
	char trantbl[4]; /* charset table translation */
	int charset;  /* current charset */
	int icharset; /* selected charset for sequence */
	int *tabs;
	ImageList *images;     /* sixel images */
	ImageList *images_alt; /* sixel images for alternate screen */
} Term;

typedef struct {
	int i;
	uint ui;
	float f;
	const void *v;
} Arg;

typedef struct {
	uint b;
	uint mask;
	void (*func)(const Arg *);
	const Arg arg;
} MouseKey;


/* Purely graphic info */
typedef struct {
	int tw, th; /* tty width and height */
	int w, h; /* window width and height */
	int ch; /* char height */
	int cw; /* char width  */
	int mode; /* window state/mode flags */
	int cursor; /* cursor style */
} TermWindow;

typedef struct {
	Display *dpy;
	Colormap cmap;
	Window win;
	Drawable buf;
	GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
	Atom xembed, wmdeletewin, netwmname, netwmpid;
	XIM xim;
	XIC xic;
	Draw draw;
	Visual *vis;
	XSetWindowAttributes attrs;
	int scr;
	int isfixed; /* is fixed geometry? */
	int l, t; /* left and top offset */
	int gm; /* geometry mask */
} XWindow;

typedef struct {
	Atom xtarget;
	char *primary, *clipboard;
	struct timespec tclick1;
	struct timespec tclick2;
} XSelection;

/* types used in config.h */
typedef struct {
	uint mod;
	KeySym keysym;
	void (*func)(const Arg *);
	const Arg arg;
} Shortcut;

typedef struct {
	uint b;
	uint mask;
	char *s;
} MouseShortcut;

typedef struct {
	KeySym k;
	uint mask;
	char *s;
	/* three-valued logic variables: 0 indifferent, 1 on, -1 off */
	signed char appkey;    /* application keypad */
	signed char appcursor; /* application cursor */
} Key;

/* Font structure */
#define Font Font_
typedef struct {
	int height;
	int width;
	int ascent;
	int descent;
	int badslant;
	int badweight;
	short lbearing;
	short rbearing;
	XftFont *match;
	FcFontSet *set;
	FcPattern *pattern;
} Font;

/* Drawing Context */
typedef struct {
	Color *col;
	size_t collen;
	Font font, bfont, ifont, ibfont;
	GC gc;
} DC;

void die(const char *, ...);
void redraw(void);
void draw(void);

void externalpipe(const Arg *);
void iso14755(const Arg *);
void printscreen(const Arg *);
void printsel(const Arg *);
void sendbreak(const Arg *);
void toggleprinter(const Arg *);

int tattrset(int);
void tnew(int, int);
void tresize(int, int);
void tsetdirtattr(int);
void ttyhangup(void);
int ttynew(char *, char *, char *, char **);
size_t ttyread(void);
void ttyresize(int, int);
void ttywrite(const char *, size_t, int);

void resettitle(void);

void selclear(void);
void selinit(void);
void selstart(int, int, int);
void selextend(int, int, int, int);
int selected(int, int);
char *getsel(void);

size_t utf8encode(Rune, char *);

void *xmalloc(size_t);
void *xrealloc(void *, size_t);
char *xstrdup(char *);

void kscrolldown(const Arg *);
void kscrollup(const Arg *);

/* config.h globals */
extern char *utmp;
extern char *stty_args;
extern char *vtiden;
extern char *worddelimiters;
extern int allowaltscreen;
extern char *termname;
extern unsigned int tabspaces;
extern unsigned int defaultfg;
extern unsigned int defaultbg;
extern MouseKey mkeys[];
extern DC dc;
extern XWindow xw;
extern XSelection xsel;
extern TermWindow win;
extern Term term;

void drawregion(int x1, int y1, int x2, int y2);