/* See license terms in x.c */

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

/* 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))

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_BOLD_FAINT	= ATTR_BOLD | ATTR_FAINT,
};

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;

#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 union
{
    int		i;
    uint	ui;
    float	f;
    const void* v;
    const char* s;
} Arg;

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

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(const char*, char*, const 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(const char*);

/* config.h globals */
extern char* utmp;
extern char* scroll;
extern char* stty_args;
extern char* vtiden;
extern wchar_t* worddelimiters;
extern int allowaltscreen;
extern int allowwindowops;
extern char* termname;
extern unsigned int tabspaces;
extern unsigned int defaultfg;
extern unsigned int defaultbg;
extern unsigned int defaultcs;
