~petersanchez/st

e2ee5ee6114eb74bb08cb9abe5a3020203e92688 — Michael Forney 7 years ago c63a87c 
Split X-specific code into x.c
patch browse .tar.gz 
6 files changed, 2195 insertions(+), 2021 deletions(-)

M Makefile
M config.def.h
M st.c
A st.h
A win.h
A x.c

M Makefile => Makefile +4 -1
@@ 3,7 3,7 @@

include config.mk

SRC = st.c
SRC = st.c x.c
OBJ = ${SRC:.c=.o}

all: options st


@@ 21,6 21,9 @@ config.h:
	@echo CC $<
	@${CC} -c ${CFLAGS} $<

st.o: config.h st.h win.h
x.o: arg.h st.h win.h

${OBJ}: config.h config.mk

st: ${OBJ}


M config.def.h => config.def.h +32 -32
@@ 5,8 5,8 @@
 *
 * font: see http://freedesktop.org/software/fontconfig/fontconfig-user.html
 */
static char font[] = "Liberation Mono:pixelsize=12:antialias=true:autohint=true";
static int borderpx = 2;
char font[] = "Liberation Mono:pixelsize=12:antialias=true:autohint=true";
int borderpx = 2;

/*
 * What program is execed by st depends of these precedence rules:


@@ 24,8 24,8 @@ static char stty_args[] = "stty raw pass8 nl -echo -iexten -cstopb 38400";
static char vtiden[] = "\033[?6c";

/* Kerning / character bounding-box multipliers */
static float cwscale = 1.0;
static float chscale = 1.0;
float cwscale = 1.0;
float chscale = 1.0;

/*
 * word delimiter string


@@ 35,26 35,26 @@ static float chscale = 1.0;
static char worddelimiters[] = " ";

/* selection timeouts (in milliseconds) */
static unsigned int doubleclicktimeout = 300;
static unsigned int tripleclicktimeout = 600;
unsigned int doubleclicktimeout = 300;
unsigned int tripleclicktimeout = 600;

/* alt screens */
static int allowaltscreen = 1;
int allowaltscreen = 1;

/* frames per second st should at maximum draw to the screen */
static unsigned int xfps = 120;
static unsigned int actionfps = 30;
unsigned int xfps = 120;
unsigned int actionfps = 30;

/*
 * blinking timeout (set to 0 to disable blinking) for the terminal blinking
 * attribute.
 */
static unsigned int blinktimeout = 800;
unsigned int blinktimeout = 800;

/*
 * thickness of underline and bar cursors
 */
static unsigned int cursorthickness = 2;
unsigned int cursorthickness = 2;

/*
 * bell volume. It must be a value between -100 and 100. Use 0 for disabling


@@ 63,7 63,7 @@ static unsigned int cursorthickness = 2;
static int bellvolume = 0;

/* default TERM value */
static char termname[] = "st-256color";
char termname[] = "st-256color";

/*
 * spaces per tab


@@ 83,7 83,7 @@ static char termname[] = "st-256color";
static unsigned int tabspaces = 8;

/* Terminal colors (16 first used in escape sequence) */
static const char *colorname[] = {
const char *colorname[] = {
	/* 8 normal colors */
	"black",
	"red3",


@@ 116,10 116,10 @@ static const char *colorname[] = {
 * Default colors (colorname index)
 * foreground, background, cursor, reverse cursor
 */
static unsigned int defaultfg = 7;
static unsigned int defaultbg = 0;
static unsigned int defaultcs = 256;
static unsigned int defaultrcs = 257;
unsigned int defaultfg = 7;
unsigned int defaultbg = 0;
unsigned int defaultcs = 256;
unsigned int defaultrcs = 257;

/*
 * Default shape of cursor


@@ 128,33 128,33 @@ static unsigned int defaultrcs = 257;
 * 6: Bar ("|")
 * 7: Snowman ("☃")
 */
static unsigned int cursorshape = 2;
unsigned int cursorshape = 2;

/*
 * Default columns and rows numbers
 */

static unsigned int cols = 80;
static unsigned int rows = 24;
unsigned int cols = 80;
unsigned int rows = 24;

/*
 * Default colour and shape of the mouse cursor
 */
static unsigned int mouseshape = XC_xterm;
static unsigned int mousefg = 7;
static unsigned int mousebg = 0;
unsigned int mouseshape = XC_xterm;
unsigned int mousefg = 7;
unsigned int mousebg = 0;

/*
 * Color used to display font attributes when fontconfig selected a font which
 * doesn't match the ones requested.
 */
static unsigned int defaultattr = 11;
unsigned int defaultattr = 11;

/*
 * Internal mouse shortcuts.
 * Beware that overloading Button1 will disable the selection.
 */
static MouseShortcut mshortcuts[] = {
MouseShortcut mshortcuts[] = {
	/* button               mask            string */
	{ Button4,              XK_ANY_MOD,     "\031" },
	{ Button5,              XK_ANY_MOD,     "\005" },


@@ 163,15 163,15 @@ static MouseShortcut mshortcuts[] = {
/* Internal keyboard shortcuts. */
#define MODKEY Mod1Mask

static Shortcut shortcuts[] = {
Shortcut shortcuts[] = {
	/* mask                 keysym          function        argument */
	{ XK_ANY_MOD,           XK_Break,       sendbreak,      {.i =  0} },
	{ ControlMask,          XK_Print,       toggleprinter,  {.i =  0} },
	{ ShiftMask,            XK_Print,       printscreen,    {.i =  0} },
	{ XK_ANY_MOD,           XK_Print,       printsel,       {.i =  0} },
	{ MODKEY|ShiftMask,     XK_Prior,       xzoom,          {.f = +1} },
	{ MODKEY|ShiftMask,     XK_Next,        xzoom,          {.f = -1} },
	{ MODKEY|ShiftMask,     XK_Home,        xzoomreset,     {.f =  0} },
	{ MODKEY|ShiftMask,     XK_Prior,       zoom,           {.f = +1} },
	{ MODKEY|ShiftMask,     XK_Next,        zoom,           {.f = -1} },
	{ MODKEY|ShiftMask,     XK_Home,        zoomreset,      {.f =  0} },
	{ ShiftMask,            XK_Insert,      selpaste,       {.i =  0} },
	{ MODKEY|ShiftMask,     XK_Insert,      clippaste,      {.i =  0} },
	{ MODKEY|ShiftMask,     XK_C,           clipcopy,       {.i =  0} },


@@ 222,7 222,7 @@ static uint ignoremod = Mod2Mask|XK_SWITCH_MOD;
 * Note that if you want to use ShiftMask with selmasks, set this to an other
 * modifier, set to 0 to not use it.
 */
static uint forceselmod = ShiftMask;
uint forceselmod = ShiftMask;

/*
 * This is the huge key array which defines all compatibility to the Linux


@@ 451,7 451,7 @@ static Key key[] = {
 * ButtonRelease and MotionNotify.
 * If no match is found, regular selection is used.
 */
static uint selmasks[] = {
uint selmasks[] = {
	[SEL_RECTANGULAR] = Mod1Mask,
};



@@ 459,7 459,7 @@ static uint selmasks[] = {
 * Printable characters in ASCII, used to estimate the advance width
 * of single wide characters.
 */
static char ascii_printable[] =
char ascii_printable[] =
	" !\"#$%&'()*+,-./0123456789:;<=>?"
	"@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
	"`abcdefghijklmnopqrstuvwxyz{|}~";


M st.c => st.c +92 -1988
@@ 21,23 21,21 @@
#include <time.h>
#include <unistd.h>
#include <libgen.h>
#include <X11/Xatom.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/cursorfont.h>
#include <X11/keysym.h>
#include <X11/Xft/Xft.h>
#include <X11/XKBlib.h>
#include <fontconfig/fontconfig.h>
#include <wchar.h>

#include "arg.h"
/* X11 */
#include <X11/cursorfont.h>
#include <X11/Xft/Xft.h>

char *argv0;

#define Glyph Glyph_
#define Font Font_

#include "win.h"
#include "st.h"

#if   defined(__linux)
 #include <pty.h>
#elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)


@@ 46,67 44,24 @@ char *argv0;
 #include <libutil.h>
#endif


/* XEMBED messages */
#define XEMBED_FOCUS_IN  4
#define XEMBED_FOCUS_OUT 5

/* Arbitrary sizes */
#define UTF_INVALID   0xFFFD
#define UTF_SIZ       4
#define ESC_BUF_SIZ   (128*UTF_SIZ)
#define ESC_ARG_SIZ   16
#define STR_BUF_SIZ   ESC_BUF_SIZ
#define STR_ARG_SIZ   ESC_ARG_SIZ
#define XK_ANY_MOD    UINT_MAX
#define XK_NO_MOD     0
#define XK_SWITCH_MOD (1<<13)

/* 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 NUMMAXLEN(x)		((int)(sizeof(x) * 2.56 + 0.5) + 1)
#define DEFAULT(a, b)		(a) = (a) ? (a) : (b)
#define BETWEEN(x, a, b)	((a) <= (x) && (x) <= (b))
#define DIVCEIL(n, d)		(((n) + ((d) - 1)) / (d))
#define ISCONTROLC0(c)		(BETWEEN(c, 0, 0x1f) || (c) == '\177')
#define ISCONTROLC1(c)		(BETWEEN(c, 0x80, 0x9f))
#define ISCONTROL(c)		(ISCONTROLC0(c) || ISCONTROLC1(c))
#define ISDELIM(u)		(utf8strchr(worddelimiters, u) != NULL)
#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 IS_SET(flag)		((term.mode & (flag)) != 0)
#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 TRUERED(x)		(((x) & 0xff0000) >> 8)
#define TRUEGREEN(x)		(((x) & 0xff00))
#define TRUEBLUE(x)		(((x) & 0xff) << 8)

/* constants */
#define ISO14755CMD		"dmenu -w %lu -p codepoint: </dev/null"

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 cursor_movement {
	CURSOR_SAVE,
	CURSOR_LOAD


@@ 118,34 73,6 @@ enum cursor_state {
	CURSOR_ORIGIN   = 2
};

enum term_mode {
	MODE_WRAP        = 1 << 0,
	MODE_INSERT      = 1 << 1,
	MODE_APPKEYPAD   = 1 << 2,
	MODE_ALTSCREEN   = 1 << 3,
	MODE_CRLF        = 1 << 4,
	MODE_MOUSEBTN    = 1 << 5,
	MODE_MOUSEMOTION = 1 << 6,
	MODE_REVERSE     = 1 << 7,
	MODE_KBDLOCK     = 1 << 8,
	MODE_HIDE        = 1 << 9,
	MODE_ECHO        = 1 << 10,
	MODE_APPCURSOR   = 1 << 11,
	MODE_MOUSESGR    = 1 << 12,
	MODE_8BIT        = 1 << 13,
	MODE_BLINK       = 1 << 14,
	MODE_FBLINK      = 1 << 15,
	MODE_FOCUS       = 1 << 16,
	MODE_MOUSEX10    = 1 << 17,
	MODE_MOUSEMANY   = 1 << 18,
	MODE_BRCKTPASTE  = 1 << 19,
	MODE_PRINT       = 1 << 20,
	MODE_UTF8        = 1 << 21,
	MODE_SIXEL       = 1 << 22,
	MODE_MOUSE       = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
	                  |MODE_MOUSEMANY,
};

enum charset {
	CS_GRAPHIC0,
	CS_GRAPHIC1,


@@ 167,53 94,6 @@ enum escape_state {
	ESC_DCS        =128,
};

enum window_state {
	WIN_VISIBLE = 1,
	WIN_FOCUSED = 2
};

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 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;

/* CSI Escape sequence structs */
/* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
typedef struct {


@@ 235,56 115,6 @@ typedef struct {
	int narg;              /* nb of args */
} STREscape;

/* Internal representation of the screen */
typedef struct {
	int row;      /* nb row */
	int col;      /* nb col */
	Line *line;   /* screen */
	Line *alt;    /* alternate screen */
	int *dirty;  /* dirtyness of lines */
	XftGlyphFontSpec *specbuf; /* font spec buffer used for rendering */
	TCursor c;    /* cursor */
	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 numlock; /* lock numbers in keyboard */
	int *tabs;
} Term;

/* Purely graphic info */
typedef struct {
	Display *dpy;
	Colormap cmap;
	Window win;
	Drawable buf;
	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 */
	int tw, th; /* tty width and height */
	int w, h; /* window width and height */
	int ch; /* char height */
	int cw; /* char width  */
	char state; /* focus, redraw, visible */
	int cursor; /* cursor style */
} XWindow;

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

typedef struct {
	KeySym k;
	uint mask;


@@ 295,89 125,26 @@ typedef struct {
	signed char crlf;      /* crlf mode          */
} Key;

typedef struct {
	int mode;
	int type;
	int snap;
	/*
	 * Selection variables:
	 * nb – normalized coordinates of the beginning of the selection
	 * ne – normalized coordinates of the end of the selection
	 * ob – original coordinates of the beginning of the selection
	 * oe – original coordinates of the end of the selection
	 */
	struct {
		int x, y;
	} nb, ne, ob, oe;

	char *primary, *clipboard;
	Atom xtarget;
	int alt;
	struct timespec tclick1;
	struct timespec tclick2;
} Selection;

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

typedef struct {
	uint mod;
	KeySym keysym;
	void (*func)(const Arg *);
	const Arg arg;
} Shortcut;

/* function definitions used in config.h */
static void clipcopy(const Arg *);
static void clippaste(const Arg *);
static void numlock(const Arg *);
static void selpaste(const Arg *);
static void xzoom(const Arg *);
static void xzoomabs(const Arg *);
static void xzoomreset(const Arg *);
static void zoom(const Arg *);
static void zoomabs(const Arg *);
static void zoomreset(const Arg *);
static void printsel(const Arg *);
static void printscreen(const Arg *) ;
static void iso14755(const Arg *);
static void toggleprinter(const Arg *);
static void sendbreak(const Arg *);

/* Config.h for applying patches and the configuration. */
/* config.h for applying patches and the configuration. */
#include "config.h"

/* Font structure */
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[MAX(LEN(colorname), 256)];
	Font font, bfont, ifont, ibfont;
	GC gc;
} DC;

static void die(const char *, ...);
static void draw(void);
static void redraw(void);
static void drawregion(int, int, int, int);
static void execsh(void);
static void stty(void);
static void sigchld(int);
static void run(void);

static void csidump(void);
static void csihandle(void);


@@ 389,7 156,6 @@ static void strhandle(void);
static void strparse(void);
static void strreset(void);

static int tattrset(int);
static void tprinter(char *, size_t);
static void tdumpsel(void);
static void tdumpline(int);


@@ 403,7 169,6 @@ static void tinsertblankline(int);
static int tlinelen(int);
static void tmoveto(int, int);
static void tmoveato(int, int);
static void tnew(int, int);
static void tnewline(int);
static void tputtab(int);
static void tputc(Rune);


@@ 415,8 180,6 @@ static void tsetattr(int *, int);
static void tsetchar(Rune, Glyph *, int, int);
static void tsetscroll(int, int);
static void tswapscreen(void);
static void tsetdirt(int, int);
static void tsetdirtattr(int);
static void tsetmode(int, int, int *, int);
static void tfulldirt(void);
static void techo(Rune);


@@ 425,151 188,53 @@ static void tdectest(char );
static void tdefutf8(char);
static int32_t tdefcolor(int *, int *, int);
static void tdeftran(char);
static inline int match(uint, uint);
static void ttynew(void);
static size_t ttyread(void);
static void ttyresize(void);
static void ttysend(char *, size_t);
static void ttywrite(const char *, size_t);
static void tstrsequence(uchar);

static inline ushort sixd_to_16bit(int);
static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
static void xdrawglyph(Glyph, int, int);
static void xhints(void);
static void xclear(int, int, int, int);
static void xdrawcursor(void);
static void xinit(void);
static void xloadcols(void);
static int xsetcolorname(int, const char *);
static int xgeommasktogravity(int);
static int xloadfont(Font *, FcPattern *);
static void xloadfonts(char *, double);
static void xsettitle(char *);
static void xresettitle(void);
static void xsetpointermotion(int);
static void xseturgency(int);
static void xsetsel(char *, Time);
static void xunloadfont(Font *);
static void xunloadfonts(void);
static void xresize(int, int);

static void expose(XEvent *);
static void visibility(XEvent *);
static void unmap(XEvent *);
static char *kmap(KeySym, uint);
static void kpress(XEvent *);
static void cmessage(XEvent *);
static void cresize(int, int);
static void resize(XEvent *);
static void focus(XEvent *);
static void brelease(XEvent *);
static void bpress(XEvent *);
static void bmotion(XEvent *);
static void propnotify(XEvent *);
static void selnotify(XEvent *);
static void selclear(XEvent *);
static void selrequest(XEvent *);

static void selinit(void);
static void selnormalize(void);
static inline int selected(int, int);
static char *getsel(void);
static void selcopy(Time);
static void selscroll(int, int);
static void selsnap(int *, int *, int);
static int x2col(int);
static int y2row(int);
static void getbuttoninfo(XEvent *);
static void mousereport(XEvent *);

static size_t utf8decode(char *, Rune *, size_t);
static Rune utf8decodebyte(char, size_t *);
static size_t utf8encode(Rune, char *);
static char utf8encodebyte(Rune, size_t);
static char *utf8strchr(char *s, Rune u);
static size_t utf8validate(Rune *, size_t);

static ssize_t xwrite(int, const char *, size_t);
static void *xmalloc(size_t);
static void *xrealloc(void *, size_t);
static char *xstrdup(char *);

static void usage(void);

static void (*handler[LASTEvent])(XEvent *) = {
	[KeyPress] = kpress,
	[ClientMessage] = cmessage,
	[ConfigureNotify] = resize,
	[VisibilityNotify] = visibility,
	[UnmapNotify] = unmap,
	[Expose] = expose,
	[FocusIn] = focus,
	[FocusOut] = focus,
	[MotionNotify] = bmotion,
	[ButtonPress] = bpress,
	[ButtonRelease] = brelease,
/*
 * Uncomment if you want the selection to disappear when you select something
 * different in another window.
 */
/*	[SelectionClear] = selclear, */
	[SelectionNotify] = selnotify,
/*
 * PropertyNotify is only turned on when there is some INCR transfer happening
 * for the selection retrieval.
 */
	[PropertyNotify] = propnotify,
	[SelectionRequest] = selrequest,
};

/* Globals */
static DC dc;
static XWindow xw;
static Term term;
TermWindow win;
Term term;
Selection sel;
int cmdfd;
pid_t pid;
char **opt_cmd  = NULL;
char *opt_class = NULL;
char *opt_embed = NULL;
char *opt_font  = NULL;
char *opt_io    = NULL;
char *opt_line  = NULL;
char *opt_name  = NULL;
char *opt_title = NULL;
int oldbutton   = 3; /* button event on startup: 3 = release */

static CSIEscape csiescseq;
static STREscape strescseq;
static int cmdfd;
static pid_t pid;
static Selection sel;
static int iofd = 1;
static char **opt_cmd  = NULL;
static char *opt_class = NULL;
static char *opt_embed = NULL;
static char *opt_font  = NULL;
static char *opt_io    = NULL;
static char *opt_line  = NULL;
static char *opt_name  = NULL;
static char *opt_title = NULL;
static int oldbutton   = 3; /* button event on startup: 3 = release */

static char *usedfont = NULL;
static double usedfontsize = 0;
static double defaultfontsize = 0;

char *usedfont = NULL;
double usedfontsize = 0;
double defaultfontsize = 0;

static uchar utfbyte[UTF_SIZ + 1] = {0x80,    0, 0xC0, 0xE0, 0xF0};
static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
static Rune utfmin[UTF_SIZ + 1] = {       0,    0,  0x80,  0x800,  0x10000};
static Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};

/* Font Ring Cache */
enum {
	FRC_NORMAL,
	FRC_ITALIC,
	FRC_BOLD,
	FRC_ITALICBOLD
};

typedef struct {
	XftFont *font;
	int flags;
	Rune unicodep;
} Fontcache;

/* Fontcache is an array now. A new font will be appended to the array. */
static Fontcache frc[16];
static int frclen = 0;
/* config.h array lengths */
size_t colornamelen = LEN(colorname);
size_t mshortcutslen = LEN(mshortcuts);
size_t shortcutslen = LEN(shortcuts);
size_t selmaskslen = LEN(selmasks);

ssize_t
xwrite(int fd, const char *s, size_t len)


@@ 714,16 379,13 @@ selinit(void)
	sel.ob.x = -1;
	sel.primary = NULL;
	sel.clipboard = NULL;
	sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
	if (sel.xtarget == None)
		sel.xtarget = XA_STRING;
}

int
x2col(int x)
{
	x -= borderpx;
	x /= xw.cw;
	x /= win.cw;

	return LIMIT(x, 0, term.col-1);
}


@@ 732,7 394,7 @@ int
y2row(int y)
{
	y -= borderpx;
	y /= xw.ch;
	y /= win.ch;

	return LIMIT(y, 0, term.row-1);
}


@@ 867,141 529,6 @@ selsnap(int *x, int *y, int direction)
	}
}

void
getbuttoninfo(XEvent *e)
{
	int type;
	uint state = e->xbutton.state & ~(Button1Mask | forceselmod);

	sel.alt = IS_SET(MODE_ALTSCREEN);

	sel.oe.x = x2col(e->xbutton.x);
	sel.oe.y = y2row(e->xbutton.y);
	selnormalize();

	sel.type = SEL_REGULAR;
	for (type = 1; type < LEN(selmasks); ++type) {
		if (match(selmasks[type], state)) {
			sel.type = type;
			break;
		}
	}
}

void
mousereport(XEvent *e)
{
	int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
	    button = e->xbutton.button, state = e->xbutton.state,
	    len;
	char buf[40];
	static int ox, oy;

	/* from urxvt */
	if (e->xbutton.type == MotionNotify) {
		if (x == ox && y == oy)
			return;
		if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
			return;
		/* MOUSE_MOTION: no reporting if no button is pressed */
		if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
			return;

		button = oldbutton + 32;
		ox = x;
		oy = y;
	} else {
		if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
			button = 3;
		} else {
			button -= Button1;
			if (button >= 3)
				button += 64 - 3;
		}
		if (e->xbutton.type == ButtonPress) {
			oldbutton = button;
			ox = x;
			oy = y;
		} else if (e->xbutton.type == ButtonRelease) {
			oldbutton = 3;
			/* MODE_MOUSEX10: no button release reporting */
			if (IS_SET(MODE_MOUSEX10))
				return;
			if (button == 64 || button == 65)
				return;
		}
	}

	if (!IS_SET(MODE_MOUSEX10)) {
		button += ((state & ShiftMask  ) ? 4  : 0)
			+ ((state & Mod4Mask   ) ? 8  : 0)
			+ ((state & ControlMask) ? 16 : 0);
	}

	if (IS_SET(MODE_MOUSESGR)) {
		len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
				button, x+1, y+1,
				e->xbutton.type == ButtonRelease ? 'm' : 'M');
	} else if (x < 223 && y < 223) {
		len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
				32+button, 32+x+1, 32+y+1);
	} else {
		return;
	}

	ttywrite(buf, len);
}

void
bpress(XEvent *e)
{
	struct timespec now;
	MouseShortcut *ms;

	if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
		mousereport(e);
		return;
	}

	for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
		if (e->xbutton.button == ms->b
				&& match(ms->mask, e->xbutton.state)) {
			ttysend(ms->s, strlen(ms->s));
			return;
		}
	}

	if (e->xbutton.button == Button1) {
		clock_gettime(CLOCK_MONOTONIC, &now);

		/* Clear previous selection, logically and visually. */
		selclear(NULL);
		sel.mode = SEL_EMPTY;
		sel.type = SEL_REGULAR;
		sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
		sel.oe.y = sel.ob.y = y2row(e->xbutton.y);

		/*
		 * If the user clicks below predefined timeouts specific
		 * snapping behaviour is exposed.
		 */
		if (TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
			sel.snap = SNAP_LINE;
		} else if (TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
			sel.snap = SNAP_WORD;
		} else {
			sel.snap = 0;
		}
		selnormalize();

		if (sel.snap != 0)
			sel.mode = SEL_READY;
		tsetdirt(sel.nb.y, sel.ne.y);
		sel.tclick2 = sel.tclick1;
		sel.tclick1 = now;
	}
}

char *
getsel(void)
{


@@ 1057,148 584,25 @@ getsel(void)
}

void
selcopy(Time t)
{
	xsetsel(getsel(), t);
}

void
propnotify(XEvent *e)
{
	XPropertyEvent *xpev;
	Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);

	xpev = &e->xproperty;
	if (xpev->state == PropertyNewValue &&
			(xpev->atom == XA_PRIMARY ||
			 xpev->atom == clipboard)) {
		selnotify(e);
	}
}

void
selnotify(XEvent *e)
{
	ulong nitems, ofs, rem;
	int format;
	uchar *data, *last, *repl;
	Atom type, incratom, property;

	incratom = XInternAtom(xw.dpy, "INCR", 0);

	ofs = 0;
	if (e->type == SelectionNotify) {
		property = e->xselection.property;
	} else if(e->type == PropertyNotify) {
		property = e->xproperty.atom;
	} else {
		return;
	}
	if (property == None)
		return;

	do {
		if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
					BUFSIZ/4, False, AnyPropertyType,
					&type, &format, &nitems, &rem,
					&data)) {
			fprintf(stderr, "Clipboard allocation failed\n");
			return;
		}

		if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
			/*
			 * If there is some PropertyNotify with no data, then
			 * this is the signal of the selection owner that all
			 * data has been transferred. We won't need to receive
			 * PropertyNotify events anymore.
			 */
			MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
			XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
					&xw.attrs);
		}

		if (type == incratom) {
			/*
			 * Activate the PropertyNotify events so we receive
			 * when the selection owner does send us the next
			 * chunk of data.
			 */
			MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
			XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
					&xw.attrs);

			/*
			 * Deleting the property is the transfer start signal.
			 */
			XDeleteProperty(xw.dpy, xw.win, (int)property);
			continue;
		}

		/*
		 * As seen in getsel:
		 * Line endings are inconsistent in the terminal and GUI world
		 * copy and pasting. When receiving some selection data,
		 * replace all '\n' with '\r'.
		 * FIXME: Fix the computer world.
		 */
		repl = data;
		last = data + nitems * format / 8;
		while ((repl = memchr(repl, '\n', last - repl))) {
			*repl++ = '\r';
		}

		if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
			ttywrite("\033[200~", 6);
		ttysend((char *)data, nitems * format / 8);
		if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
			ttywrite("\033[201~", 6);
		XFree(data);
		/* number of 32-bit chunks returned */
		ofs += nitems * format / 32;
	} while (rem > 0);

	/*
	 * Deleting the property again tells the selection owner to send the
	 * next data chunk in the property.
	 */
	XDeleteProperty(xw.dpy, xw.win, (int)property);
}

void
selpaste(const Arg *dummy)
{
	XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
			xw.win, CurrentTime);
	xselpaste();
}

void
clipcopy(const Arg *dummy)
{
	Atom clipboard;

	if (sel.clipboard != NULL)
		free(sel.clipboard);

	if (sel.primary != NULL) {
		sel.clipboard = xstrdup(sel.primary);
		clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
		XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
	}
	xclipcopy();
}

void
clippaste(const Arg *dummy)
{
	Atom clipboard;

	clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
	XConvertSelection(xw.dpy, clipboard, sel.xtarget, clipboard,
			xw.win, CurrentTime);
	xclippaste();
}

void
selclear(XEvent *e)
selclear(void)
{
	if (sel.ob.x == -1)
		return;


@@ 1208,120 612,6 @@ selclear(XEvent *e)
}

void
selrequest(XEvent *e)
{
	XSelectionRequestEvent *xsre;
	XSelectionEvent xev;
	Atom xa_targets, string, clipboard;
	char *seltext;

	xsre = (XSelectionRequestEvent *) e;
	xev.type = SelectionNotify;
	xev.requestor = xsre->requestor;
	xev.selection = xsre->selection;
	xev.target = xsre->target;
	xev.time = xsre->time;
	if (xsre->property == None)
		xsre->property = xsre->target;

	/* reject */
	xev.property = None;

	xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
	if (xsre->target == xa_targets) {
		/* respond with the supported type */
		string = sel.xtarget;
		XChangeProperty(xsre->display, xsre->requestor, xsre->property,
				XA_ATOM, 32, PropModeReplace,
				(uchar *) &string, 1);
		xev.property = xsre->property;
	} else if (xsre->target == sel.xtarget || xsre->target == XA_STRING) {
		/*
		 * xith XA_STRING non ascii characters may be incorrect in the
		 * requestor. It is not our problem, use utf8.
		 */
		clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
		if (xsre->selection == XA_PRIMARY) {
			seltext = sel.primary;
		} else if (xsre->selection == clipboard) {
			seltext = sel.clipboard;
		} else {
			fprintf(stderr,
				"Unhandled clipboard selection 0x%lx\n",
				xsre->selection);
			return;
		}
		if (seltext != NULL) {
			XChangeProperty(xsre->display, xsre->requestor,
					xsre->property, xsre->target,
					8, PropModeReplace,
					(uchar *)seltext, strlen(seltext));
			xev.property = xsre->property;
		}
	}

	/* all done, send a notification to the listener */
	if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
		fprintf(stderr, "Error sending SelectionNotify event\n");
}

void
xsetsel(char *str, Time t)
{
	free(sel.primary);
	sel.primary = str;

	XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
	if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
		selclear(0);
}

void
brelease(XEvent *e)
{
	if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
		mousereport(e);
		return;
	}

	if (e->xbutton.button == Button2) {
		selpaste(NULL);
	} else if (e->xbutton.button == Button1) {
		if (sel.mode == SEL_READY) {
			getbuttoninfo(e);
			selcopy(e->xbutton.time);
		} else
			selclear(NULL);
		sel.mode = SEL_IDLE;
		tsetdirt(sel.nb.y, sel.ne.y);
	}
}

void
bmotion(XEvent *e)
{
	int oldey, oldex, oldsby, oldsey;

	if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
		mousereport(e);
		return;
	}

	if (!sel.mode)
		return;

	sel.mode = SEL_READY;
	oldey = sel.oe.y;
	oldex = sel.oe.x;
	oldsby = sel.nb.y;
	oldsey = sel.ne.y;
	getbuttoninfo(e);

	if (oldey != sel.oe.y || oldex != sel.oe.x)
		tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
}

void
die(const char *errstr, ...)
{
	va_list ap;


@@ 1337,7 627,6 @@ execsh(void)
{
	char **args, *sh, *prog;
	const struct passwd *pw;
	char buf[sizeof(long) * 8 + 1];

	errno = 0;
	if ((pw = getpwuid(getuid())) == NULL) {


@@ 1358,8 647,6 @@ execsh(void)
		prog = sh;
	args = (opt_cmd) ? opt_cmd : (char *[]) {prog, NULL};

	snprintf(buf, sizeof(buf), "%lu", xw.win);

	unsetenv("COLUMNS");
	unsetenv("LINES");
	unsetenv("TERMCAP");


@@ 1368,7 655,7 @@ execsh(void)
	setenv("SHELL", sh, 1);
	setenv("HOME", pw->pw_dir, 1);
	setenv("TERM", termname, 1);
	setenv("WINDOWID", buf, 1);
	xsetenv();

	signal(SIGCHLD, SIG_DFL);
	signal(SIGHUP, SIG_DFL);


@@ 1606,8 893,8 @@ ttyresize(void)

	w.ws_row = term.row;
	w.ws_col = term.col;
	w.ws_xpixel = xw.tw;
	w.ws_ypixel = xw.th;
	w.ws_xpixel = win.tw;
	w.ws_ypixel = win.th;
	if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
		fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
}


@@ 1771,7 1058,7 @@ selscroll(int orig, int n)

	if (BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
		if ((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
			selclear(NULL);
			selclear();
			return;
		}
		if (sel.type == SEL_RECTANGULAR) {


@@ 1917,7 1204,7 @@ tclearregion(int x1, int y1, int x2, int y2)
		for (x = x1; x <= x2; x++) {
			gp = &term.line[y][x];
			if (selected(x, y))
				selclear(NULL);
				selclear();
			gp->fg = term.c.attr.fg;
			gp->bg = term.c.attr.bg;
			gp->mode = 0;


@@ 2368,7 1655,7 @@ csihandle(void)
		tputtab(csiescseq.arg[0]);
		break;
	case 'J': /* ED -- Clear screen */
		selclear(NULL);
		selclear();
		switch (csiescseq.arg[0]) {
		case 0: /* below */
			tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);


@@ 2475,7 1762,7 @@ csihandle(void)
			if (!BETWEEN(csiescseq.arg[0], 0, 6)) {
				goto unknown;
			}
			xw.cursor = csiescseq.arg[0];
			win.cursor = csiescseq.arg[0];
			break;
		default:
			goto unknown;


@@ 2642,12 1929,13 @@ tprinter(char *s, size_t len)
void
iso14755(const Arg *arg)
{
	char cmd[sizeof(ISO14755CMD) + NUMMAXLEN(xw.win)];
	unsigned long id = xwinid();
	char cmd[sizeof(ISO14755CMD) + NUMMAXLEN(id)];
	FILE *p;
	char *us, *e, codepoint[9], uc[UTF_SIZ];
	unsigned long utf32;

	snprintf(cmd, sizeof(cmd), ISO14755CMD, xw.win);
	snprintf(cmd, sizeof(cmd), ISO14755CMD, id);
	if (!(p = popen(cmd, "r")))
		return;



@@ 2833,10 2121,10 @@ tcontrolcode(uchar ascii)
			/* backwards compatibility to xterm */
			strhandle();
		} else {
			if (!(xw.state & WIN_FOCUSED))
			if (!(win.state & WIN_FOCUSED))
				xseturgency(1);
			if (bellvolume)
				XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
				xbell(bellvolume);
		}
		break;
	case '\033': /* ESC */


@@ 2968,7 2256,7 @@ eschandle(uchar ascii)
		break;
	case 'c': /* RIS -- Reset to inital state */
		treset();
		xresettitle();
		resettitle();
		xloadcols();
		break;
	case '=': /* DECPAM -- Application keypad */


@@ 3109,7 2397,7 @@ check_control_code:
		return;
	}
	if (sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
		selclear(NULL);
		selclear();

	gp = &term.line[term.c.y][term.c.x];
	if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {


@@ 3177,7 2465,7 @@ tresize(int col, int row)
	}

	/* resize to new width */
	term.specbuf = xrealloc(term.specbuf, col * sizeof(XftGlyphFontSpec));
	term.specbuf = xrealloc(term.specbuf, col * sizeof(GlyphFontSpec));

	/* resize to new height */
	term.line = xrealloc(term.line, row * sizeof(Line));


@@ 3228,993 2516,66 @@ tresize(int col, int row)
}

void
xresize(int col, int row)
zoom(const Arg *arg)
{
	xw.tw = MAX(1, col * xw.cw);
	xw.th = MAX(1, row * xw.ch);

	XFreePixmap(xw.dpy, xw.buf);
	xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
			DefaultDepth(xw.dpy, xw.scr));
	XftDrawChange(xw.draw, xw.buf);
	xclear(0, 0, xw.w, xw.h);
}
	Arg larg;

ushort
sixd_to_16bit(int x)
{
	return x == 0 ? 0 : 0x3737 + 0x2828 * x;
	larg.f = usedfontsize + arg->f;
	zoomabs(&larg);
}

int
xloadcolor(int i, const char *name, Color *ncolor)
void
zoomabs(const Arg *arg)
{
	XRenderColor color = { .alpha = 0xffff };

	if (!name) {
		if (BETWEEN(i, 16, 255)) { /* 256 color */
			if (i < 6*6*6+16) { /* same colors as xterm */
				color.red   = sixd_to_16bit( ((i-16)/36)%6 );
				color.green = sixd_to_16bit( ((i-16)/6) %6 );
				color.blue  = sixd_to_16bit( ((i-16)/1) %6 );
			} else { /* greyscale */
				color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
				color.green = color.blue = color.red;
			}
			return XftColorAllocValue(xw.dpy, xw.vis,
			                          xw.cmap, &color, ncolor);
		} else
			name = colorname[i];
	}

	return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
	xunloadfonts();
	xloadfonts(usedfont, arg->f);
	cresize(0, 0);
	ttyresize();
	redraw();
	xhints();
}

void
xloadcols(void)
zoomreset(const Arg *arg)
{
	int i;
	static int loaded;
	Color *cp;
	Arg larg;

	if (loaded) {
		for (cp = dc.col; cp < &dc.col[LEN(dc.col)]; ++cp)
			XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
	if (defaultfontsize > 0) {
		larg.f = defaultfontsize;
		zoomabs(&larg);
	}

	for (i = 0; i < LEN(dc.col); i++)
		if (!xloadcolor(i, NULL, &dc.col[i])) {
			if (colorname[i])
				die("Could not allocate color '%s'\n", colorname[i]);
			else
				die("Could not allocate color %d\n", i);
		}
	loaded = 1;
}

int
xsetcolorname(int x, const char *name)
{
	Color ncolor;

	if (!BETWEEN(x, 0, LEN(dc.col)))
		return 1;


	if (!xloadcolor(x, name, &ncolor))
		return 1;

	XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
	dc.col[x] = ncolor;

	return 0;
}

/*
 * Absolute coordinates.
 */
void
xclear(int x1, int y1, int x2, int y2)
resettitle(void)
{
	XftDrawRect(xw.draw,
			&dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
			x1, y1, x2-x1, y2-y1);
	xsettitle(opt_title ? opt_title : "st");
}

void
xhints(void)
redraw(void)
{
	XClassHint class = {opt_name ? opt_name : termname,
	                    opt_class ? opt_class : termname};
	XWMHints wm = {.flags = InputHint, .input = 1};
	XSizeHints *sizeh = NULL;

	sizeh = XAllocSizeHints();

	sizeh->flags = PSize | PResizeInc | PBaseSize;
	sizeh->height = xw.h;
	sizeh->width = xw.w;
	sizeh->height_inc = xw.ch;
	sizeh->width_inc = xw.cw;
	sizeh->base_height = 2 * borderpx;
	sizeh->base_width = 2 * borderpx;
	if (xw.isfixed) {
		sizeh->flags |= PMaxSize | PMinSize;
		sizeh->min_width = sizeh->max_width = xw.w;
		sizeh->min_height = sizeh->max_height = xw.h;
	}
	if (xw.gm & (XValue|YValue)) {
		sizeh->flags |= USPosition | PWinGravity;
		sizeh->x = xw.l;
		sizeh->y = xw.t;
		sizeh->win_gravity = xgeommasktogravity(xw.gm);
	}

	XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
			&class);
	XFree(sizeh);
	tfulldirt();
	draw();
}

int
xgeommasktogravity(int mask)
match(uint mask, uint state)
{
	switch (mask & (XNegative|YNegative)) {
	case 0:
		return NorthWestGravity;
	case XNegative:
		return NorthEastGravity;
	case YNegative:
		return SouthWestGravity;
	}

	return SouthEastGravity;
	return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
}

int
xloadfont(Font *f, FcPattern *pattern)
void
numlock(const Arg *dummy)
{
	FcPattern *configured;
	FcPattern *match;
	FcResult result;
	XGlyphInfo extents;
	int wantattr, haveattr;
	term.numlock ^= 1;
}

	/*
	 * Manually configure instead of calling XftMatchFont
	 * so that we can use the configured pattern for
	 * "missing glyph" lookups.
	 */
	configured = FcPatternDuplicate(pattern);
	if (!configured)
		return 1;

	FcConfigSubstitute(NULL, configured, FcMatchPattern);
	XftDefaultSubstitute(xw.dpy, xw.scr, configured);

	match = FcFontMatch(NULL, configured, &result);
	if (!match) {
		FcPatternDestroy(configured);
		return 1;
	}

	if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
		FcPatternDestroy(configured);
		FcPatternDestroy(match);
		return 1;
	}

	if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
	    XftResultMatch)) {
		/*
		 * Check if xft was unable to find a font with the appropriate
		 * slant but gave us one anyway. Try to mitigate.
		 */
		if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
		    &haveattr) != XftResultMatch) || haveattr < wantattr) {
			f->badslant = 1;
			fputs("st: font slant does not match\n", stderr);
		}
	}

	if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
	    XftResultMatch)) {
		if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
		    &haveattr) != XftResultMatch) || haveattr != wantattr) {
			f->badweight = 1;
			fputs("st: font weight does not match\n", stderr);
		}
	}

	XftTextExtentsUtf8(xw.dpy, f->match,
		(const FcChar8 *) ascii_printable,
		strlen(ascii_printable), &extents);

	f->set = NULL;
	f->pattern = configured;

	f->ascent = f->match->ascent;
	f->descent = f->match->descent;
	f->lbearing = 0;
	f->rbearing = f->match->max_advance_width;

	f->height = f->ascent + f->descent;
	f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));

	return 0;
}

void
xloadfonts(char *fontstr, double fontsize)
{
	FcPattern *pattern;
	double fontval;
	float ceilf(float);

	if (fontstr[0] == '-') {
		pattern = XftXlfdParse(fontstr, False, False);
	} else {
		pattern = FcNameParse((FcChar8 *)fontstr);
	}

	if (!pattern)
		die("st: can't open font %s\n", fontstr);

	if (fontsize > 1) {
		FcPatternDel(pattern, FC_PIXEL_SIZE);
		FcPatternDel(pattern, FC_SIZE);
		FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
		usedfontsize = fontsize;
	} else {
		if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
				FcResultMatch) {
			usedfontsize = fontval;
		} else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
				FcResultMatch) {
			usedfontsize = -1;
		} else {
			/*
			 * Default font size is 12, if none given. This is to
			 * have a known usedfontsize value.
			 */
			FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
			usedfontsize = 12;
		}
		defaultfontsize = usedfontsize;
	}

	if (xloadfont(&dc.font, pattern))
		die("st: can't open font %s\n", fontstr);

	if (usedfontsize < 0) {
		FcPatternGetDouble(dc.font.match->pattern,
		                   FC_PIXEL_SIZE, 0, &fontval);
		usedfontsize = fontval;
		if (fontsize == 0)
			defaultfontsize = fontval;
	}

	/* Setting character width and height. */
	xw.cw = ceilf(dc.font.width * cwscale);
	xw.ch = ceilf(dc.font.height * chscale);

	FcPatternDel(pattern, FC_SLANT);
	FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
	if (xloadfont(&dc.ifont, pattern))
		die("st: can't open font %s\n", fontstr);

	FcPatternDel(pattern, FC_WEIGHT);
	FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
	if (xloadfont(&dc.ibfont, pattern))
		die("st: can't open font %s\n", fontstr);

	FcPatternDel(pattern, FC_SLANT);
	FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
	if (xloadfont(&dc.bfont, pattern))
		die("st: can't open font %s\n", fontstr);

	FcPatternDestroy(pattern);
}

void
xunloadfont(Font *f)
{
	XftFontClose(xw.dpy, f->match);
	FcPatternDestroy(f->pattern);
	if (f->set)
		FcFontSetDestroy(f->set);
}

void
xunloadfonts(void)
{
	/* Free the loaded fonts in the font cache.  */
	while (frclen > 0)
		XftFontClose(xw.dpy, frc[--frclen].font);

	xunloadfont(&dc.font);
	xunloadfont(&dc.bfont);
	xunloadfont(&dc.ifont);
	xunloadfont(&dc.ibfont);
}

void
xzoom(const Arg *arg)
{
	Arg larg;

	larg.f = usedfontsize + arg->f;
	xzoomabs(&larg);
}

void
xzoomabs(const Arg *arg)
{
	xunloadfonts();
	xloadfonts(usedfont, arg->f);
	cresize(0, 0);
	ttyresize();
	redraw();
	xhints();
}

void
xzoomreset(const Arg *arg)
{
	Arg larg;

	if (defaultfontsize > 0) {
		larg.f = defaultfontsize;
		xzoomabs(&larg);
	}
}

void
xinit(void)
{
	XGCValues gcvalues;
	Cursor cursor;
	Window parent;
	pid_t thispid = getpid();
	XColor xmousefg, xmousebg;

	if (!(xw.dpy = XOpenDisplay(NULL)))
		die("Can't open display\n");
	xw.scr = XDefaultScreen(xw.dpy);
	xw.vis = XDefaultVisual(xw.dpy, xw.scr);

	/* font */
	if (!FcInit())
		die("Could not init fontconfig.\n");

	usedfont = (opt_font == NULL)? font : opt_font;
	xloadfonts(usedfont, 0);

	/* colors */
	xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
	xloadcols();

	/* adjust fixed window geometry */
	xw.w = 2 * borderpx + term.col * xw.cw;
	xw.h = 2 * borderpx + term.row * xw.ch;
	if (xw.gm & XNegative)
		xw.l += DisplayWidth(xw.dpy, xw.scr) - xw.w - 2;
	if (xw.gm & YNegative)
		xw.t += DisplayHeight(xw.dpy, xw.scr) - xw.h - 2;

	/* Events */
	xw.attrs.background_pixel = dc.col[defaultbg].pixel;
	xw.attrs.border_pixel = dc.col[defaultbg].pixel;
	xw.attrs.bit_gravity = NorthWestGravity;
	xw.attrs.event_mask = FocusChangeMask | KeyPressMask
		| ExposureMask | VisibilityChangeMask | StructureNotifyMask
		| ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
	xw.attrs.colormap = xw.cmap;

	if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
		parent = XRootWindow(xw.dpy, xw.scr);
	xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
			xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
			xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
			| CWEventMask | CWColormap, &xw.attrs);

	memset(&gcvalues, 0, sizeof(gcvalues));
	gcvalues.graphics_exposures = False;
	dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
			&gcvalues);
	xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
			DefaultDepth(xw.dpy, xw.scr));
	XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
	XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);

	/* Xft rendering context */
	xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);

	/* input methods */
	if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
		XSetLocaleModifiers("@im=local");
		if ((xw.xim =  XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
			XSetLocaleModifiers("@im=");
			if ((xw.xim = XOpenIM(xw.dpy,
					NULL, NULL, NULL)) == NULL) {
				die("XOpenIM failed. Could not open input"
					" device.\n");
			}
		}
	}
	xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
					   | XIMStatusNothing, XNClientWindow, xw.win,
					   XNFocusWindow, xw.win, NULL);
	if (xw.xic == NULL)
		die("XCreateIC failed. Could not obtain input method.\n");

	/* white cursor, black outline */
	cursor = XCreateFontCursor(xw.dpy, mouseshape);
	XDefineCursor(xw.dpy, xw.win, cursor);

	if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
		xmousefg.red   = 0xffff;
		xmousefg.green = 0xffff;
		xmousefg.blue  = 0xffff;
	}

	if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
		xmousebg.red   = 0x0000;
		xmousebg.green = 0x0000;
		xmousebg.blue  = 0x0000;
	}

	XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);

	xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
	xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
	xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
	XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);

	xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
	XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
			PropModeReplace, (uchar *)&thispid, 1);

	xresettitle();
	XMapWindow(xw.dpy, xw.win);
	xhints();
	XSync(xw.dpy, False);
}

int
xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
{
	float winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch, xp, yp;
	ushort mode, prevmode = USHRT_MAX;
	Font *font = &dc.font;
	int frcflags = FRC_NORMAL;
	float runewidth = xw.cw;
	Rune rune;
	FT_UInt glyphidx;
	FcResult fcres;
	FcPattern *fcpattern, *fontpattern;
	FcFontSet *fcsets[] = { NULL };
	FcCharSet *fccharset;
	int i, f, numspecs = 0;

	for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
		/* Fetch rune and mode for current glyph. */
		rune = glyphs[i].u;
		mode = glyphs[i].mode;

		/* Skip dummy wide-character spacing. */
		if (mode == ATTR_WDUMMY)
			continue;

		/* Determine font for glyph if different from previous glyph. */
		if (prevmode != mode) {
			prevmode = mode;
			font = &dc.font;
			frcflags = FRC_NORMAL;
			runewidth = xw.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
			if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
				font = &dc.ibfont;
				frcflags = FRC_ITALICBOLD;
			} else if (mode & ATTR_ITALIC) {
				font = &dc.ifont;
				frcflags = FRC_ITALIC;
			} else if (mode & ATTR_BOLD) {
				font = &dc.bfont;
				frcflags = FRC_BOLD;
			}
			yp = winy + font->ascent;
		}

		/* Lookup character index with default font. */
		glyphidx = XftCharIndex(xw.dpy, font->match, rune);
		if (glyphidx) {
			specs[numspecs].font = font->match;
			specs[numspecs].glyph = glyphidx;
			specs[numspecs].x = (short)xp;
			specs[numspecs].y = (short)yp;
			xp += runewidth;
			numspecs++;
			continue;
		}

		/* Fallback on font cache, search the font cache for match. */
		for (f = 0; f < frclen; f++) {
			glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
			/* Everything correct. */
			if (glyphidx && frc[f].flags == frcflags)
				break;
			/* We got a default font for a not found glyph. */
			if (!glyphidx && frc[f].flags == frcflags
					&& frc[f].unicodep == rune) {
				break;
			}
		}

		/* Nothing was found. Use fontconfig to find matching font. */
		if (f >= frclen) {
			if (!font->set)
				font->set = FcFontSort(0, font->pattern,
				                       1, 0, &fcres);
			fcsets[0] = font->set;

			/*
			 * Nothing was found in the cache. Now use
			 * some dozen of Fontconfig calls to get the
			 * font for one single character.
			 *
			 * Xft and fontconfig are design failures.
			 */
			fcpattern = FcPatternDuplicate(font->pattern);
			fccharset = FcCharSetCreate();

			FcCharSetAddChar(fccharset, rune);
			FcPatternAddCharSet(fcpattern, FC_CHARSET,
					fccharset);
			FcPatternAddBool(fcpattern, FC_SCALABLE, 1);

			FcConfigSubstitute(0, fcpattern,
					FcMatchPattern);
			FcDefaultSubstitute(fcpattern);

			fontpattern = FcFontSetMatch(0, fcsets, 1,
					fcpattern, &fcres);

			/*
			 * Overwrite or create the new cache entry.
			 */
			if (frclen >= LEN(frc)) {
				frclen = LEN(frc) - 1;
				XftFontClose(xw.dpy, frc[frclen].font);
				frc[frclen].unicodep = 0;
			}

			frc[frclen].font = XftFontOpenPattern(xw.dpy,
					fontpattern);
			frc[frclen].flags = frcflags;
			frc[frclen].unicodep = rune;

			glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);

			f = frclen;
			frclen++;

			FcPatternDestroy(fcpattern);
			FcCharSetDestroy(fccharset);
		}

		specs[numspecs].font = frc[f].font;
		specs[numspecs].glyph = glyphidx;
		specs[numspecs].x = (short)xp;
		specs[numspecs].y = (short)yp;
		xp += runewidth;
		numspecs++;
	}

	return numspecs;
}

void
xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
{
	int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
	int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
	    width = charlen * xw.cw;
	Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
	XRenderColor colfg, colbg;
	XRectangle r;

	/* Fallback on color display for attributes not supported by the font */
	if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
		if (dc.ibfont.badslant || dc.ibfont.badweight)
			base.fg = defaultattr;
	} else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
	    (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
		base.fg = defaultattr;
	}

	if (IS_TRUECOL(base.fg)) {
		colfg.alpha = 0xffff;
		colfg.red = TRUERED(base.fg);
		colfg.green = TRUEGREEN(base.fg);
		colfg.blue = TRUEBLUE(base.fg);
		XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
		fg = &truefg;
	} else {
		fg = &dc.col[base.fg];
	}

	if (IS_TRUECOL(base.bg)) {
		colbg.alpha = 0xffff;
		colbg.green = TRUEGREEN(base.bg);
		colbg.red = TRUERED(base.bg);
		colbg.blue = TRUEBLUE(base.bg);
		XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
		bg = &truebg;
	} else {
		bg = &dc.col[base.bg];
	}

	/* Change basic system colors [0-7] to bright system colors [8-15] */
	if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
		fg = &dc.col[base.fg + 8];

	if (IS_SET(MODE_REVERSE)) {
		if (fg == &dc.col[defaultfg]) {
			fg = &dc.col[defaultbg];
		} else {
			colfg.red = ~fg->color.red;
			colfg.green = ~fg->color.green;
			colfg.blue = ~fg->color.blue;
			colfg.alpha = fg->color.alpha;
			XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
					&revfg);
			fg = &revfg;
		}

		if (bg == &dc.col[defaultbg]) {
			bg = &dc.col[defaultfg];
		} else {
			colbg.red = ~bg->color.red;
			colbg.green = ~bg->color.green;
			colbg.blue = ~bg->color.blue;
			colbg.alpha = bg->color.alpha;
			XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
					&revbg);
			bg = &revbg;
		}
	}

	if (base.mode & ATTR_REVERSE) {
		temp = fg;
		fg = bg;
		bg = temp;
	}

	if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
		colfg.red = fg->color.red / 2;
		colfg.green = fg->color.green / 2;
		colfg.blue = fg->color.blue / 2;
		XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
		fg = &revfg;
	}

	if (base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
		fg = bg;

	if (base.mode & ATTR_INVISIBLE)
		fg = bg;

	/* Intelligent cleaning up of the borders. */
	if (x == 0) {
		xclear(0, (y == 0)? 0 : winy, borderpx,
			winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
	}
	if (x + charlen >= term.col) {
		xclear(winx + width, (y == 0)? 0 : winy, xw.w,
			((y >= term.row-1)? xw.h : (winy + xw.ch)));
	}
	if (y == 0)
		xclear(winx, 0, winx + width, borderpx);
	if (y == term.row-1)
		xclear(winx, winy + xw.ch, winx + width, xw.h);

	/* Clean up the region we want to draw to. */
	XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);

	/* Set the clip region because Xft is sometimes dirty. */
	r.x = 0;
	r.y = 0;
	r.height = xw.ch;
	r.width = width;
	XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);

	/* Render the glyphs. */
	XftDrawGlyphFontSpec(xw.draw, fg, specs, len);

	/* Render underline and strikethrough. */
	if (base.mode & ATTR_UNDERLINE) {
		XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
				width, 1);
	}

	if (base.mode & ATTR_STRUCK) {
		XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
				width, 1);
	}

	/* Reset clip to none. */
	XftDrawSetClip(xw.draw, 0);
}

void
xdrawglyph(Glyph g, int x, int y)
{
	int numspecs;
	XftGlyphFontSpec spec;

	numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
	xdrawglyphfontspecs(&spec, g, numspecs, x, y);
}

void
xdrawcursor(void)
{
	static int oldx = 0, oldy = 0;
	int curx;
	Glyph g = {' ', ATTR_NULL, defaultbg, defaultcs}, og;
	int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
	Color drawcol;

	LIMIT(oldx, 0, term.col-1);
	LIMIT(oldy, 0, term.row-1);

	curx = term.c.x;

	/* adjust position if in dummy */
	if (term.line[oldy][oldx].mode & ATTR_WDUMMY)
		oldx--;
	if (term.line[term.c.y][curx].mode & ATTR_WDUMMY)
		curx--;

	/* remove the old cursor */
	og = term.line[oldy][oldx];
	if (ena_sel && selected(oldx, oldy))
		og.mode ^= ATTR_REVERSE;
	xdrawglyph(og, oldx, oldy);

	g.u = term.line[term.c.y][term.c.x].u;

	/*
	 * Select the right color for the right mode.
	 */
	if (IS_SET(MODE_REVERSE)) {
		g.mode |= ATTR_REVERSE;
		g.bg = defaultfg;
		if (ena_sel && selected(term.c.x, term.c.y)) {
			drawcol = dc.col[defaultcs];
			g.fg = defaultrcs;
		} else {
			drawcol = dc.col[defaultrcs];
			g.fg = defaultcs;
		}
	} else {
		if (ena_sel && selected(term.c.x, term.c.y)) {
			drawcol = dc.col[defaultrcs];
			g.fg = defaultfg;
			g.bg = defaultrcs;
		} else {
			drawcol = dc.col[defaultcs];
		}
	}

	if (IS_SET(MODE_HIDE))
		return;

	/* draw the new one */
	if (xw.state & WIN_FOCUSED) {
		switch (xw.cursor) {
		case 7: /* st extension: snowman */
			utf8decode("☃", &g.u, UTF_SIZ);
		case 0: /* Blinking Block */
		case 1: /* Blinking Block (Default) */
		case 2: /* Steady Block */
			g.mode |= term.line[term.c.y][curx].mode & ATTR_WIDE;
			xdrawglyph(g, term.c.x, term.c.y);
			break;
		case 3: /* Blinking Underline */
		case 4: /* Steady Underline */
			XftDrawRect(xw.draw, &drawcol,
					borderpx + curx * xw.cw,
					borderpx + (term.c.y + 1) * xw.ch - \
						cursorthickness,
					xw.cw, cursorthickness);
			break;
		case 5: /* Blinking bar */
		case 6: /* Steady bar */
			XftDrawRect(xw.draw, &drawcol,
					borderpx + curx * xw.cw,
					borderpx + term.c.y * xw.ch,
					cursorthickness, xw.ch);
			break;
		}
	} else {
		XftDrawRect(xw.draw, &drawcol,
				borderpx + curx * xw.cw,
				borderpx + term.c.y * xw.ch,
				xw.cw - 1, 1);
		XftDrawRect(xw.draw, &drawcol,
				borderpx + curx * xw.cw,
				borderpx + term.c.y * xw.ch,
				1, xw.ch - 1);
		XftDrawRect(xw.draw, &drawcol,
				borderpx + (curx + 1) * xw.cw - 1,
				borderpx + term.c.y * xw.ch,
				1, xw.ch - 1);
		XftDrawRect(xw.draw, &drawcol,
				borderpx + curx * xw.cw,
				borderpx + (term.c.y + 1) * xw.ch - 1,
				xw.cw, 1);
	}
	oldx = curx, oldy = term.c.y;
}


void
xsettitle(char *p)
{
	XTextProperty prop;

	Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
			&prop);
	XSetWMName(xw.dpy, xw.win, &prop);
	XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
	XFree(prop.value);
}

void
xresettitle(void)
{
	xsettitle(opt_title ? opt_title : "st");
}

void
redraw(void)
{
	tfulldirt();
	draw();
}

void
draw(void)
{
	drawregion(0, 0, term.col, term.row);
	XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
			xw.h, 0, 0);
	XSetForeground(xw.dpy, dc.gc,
			dc.col[IS_SET(MODE_REVERSE)?
				defaultfg : defaultbg].pixel);
}

void
drawregion(int x1, int y1, int x2, int y2)
{
	int i, x, y, ox, numspecs;
	Glyph base, new;
	XftGlyphFontSpec *specs;
	int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);

	if (!(xw.state & WIN_VISIBLE))
		return;

	for (y = y1; y < y2; y++) {
		if (!term.dirty[y])
			continue;

		term.dirty[y] = 0;

		specs = term.specbuf;
		numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y);

		i = ox = 0;
		for (x = x1; x < x2 && i < numspecs; x++) {
			new = term.line[y][x];
			if (new.mode == ATTR_WDUMMY)
				continue;
			if (ena_sel && selected(x, y))
				new.mode ^= ATTR_REVERSE;
			if (i > 0 && ATTRCMP(base, new)) {
				xdrawglyphfontspecs(specs, base, i, ox, y);
				specs += i;
				numspecs -= i;
				i = 0;
			}
			if (i == 0) {
				ox = x;
				base = new;
			}
			i++;
		}
		if (i > 0)
			xdrawglyphfontspecs(specs, base, i, ox, y);
	}
	xdrawcursor();
}

void
expose(XEvent *ev)
{
	redraw();
}

void
visibility(XEvent *ev)
{
	XVisibilityEvent *e = &ev->xvisibility;

	MODBIT(xw.state, e->state != VisibilityFullyObscured, WIN_VISIBLE);
}

void
unmap(XEvent *ev)
{
	xw.state &= ~WIN_VISIBLE;
}

void
xsetpointermotion(int set)
{
	MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
	XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
}

void
xseturgency(int add)
{
	XWMHints *h = XGetWMHints(xw.dpy, xw.win);

	MODBIT(h->flags, add, XUrgencyHint);
	XSetWMHints(xw.dpy, xw.win, h);
	XFree(h);
}

void
focus(XEvent *ev)
{
	XFocusChangeEvent *e = &ev->xfocus;

	if (e->mode == NotifyGrab)
		return;

	if (ev->type == FocusIn) {
		XSetICFocus(xw.xic);
		xw.state |= WIN_FOCUSED;
		xseturgency(0);
		if (IS_SET(MODE_FOCUS))
			ttywrite("\033[I", 3);
	} else {
		XUnsetICFocus(xw.xic);
		xw.state &= ~WIN_FOCUSED;
		if (IS_SET(MODE_FOCUS))
			ttywrite("\033[O", 3);
	}
}

int
match(uint mask, uint state)
{
	return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
}

void
numlock(const Arg *dummy)
{
	term.numlock ^= 1;
}

char*
kmap(KeySym k, uint state)
{
	Key *kp;
	int i;
char*
kmap(KeySym k, uint state)
{
	Key *kp;
	int i;

	/* Check for mapped keys out of X11 function keys. */
	for (i = 0; i < LEN(mappedkeys); i++) {


@@ 4251,211 2612,23 @@ kmap(KeySym k, uint state)
}

void
kpress(XEvent *ev)
{
	XKeyEvent *e = &ev->xkey;
	KeySym ksym;
	char buf[32], *customkey;
	int len;
	Rune c;
	Status status;
	Shortcut *bp;

	if (IS_SET(MODE_KBDLOCK))
		return;

	len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
	/* 1. shortcuts */
	for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
		if (ksym == bp->keysym && match(bp->mod, e->state)) {
			bp->func(&(bp->arg));
			return;
		}
	}

	/* 2. custom keys from config.h */
	if ((customkey = kmap(ksym, e->state))) {
		ttysend(customkey, strlen(customkey));
		return;
	}

	/* 3. composed string from input method */
	if (len == 0)
		return;
	if (len == 1 && e->state & Mod1Mask) {
		if (IS_SET(MODE_8BIT)) {
			if (*buf < 0177) {
				c = *buf | 0x80;
				len = utf8encode(c, buf);
			}
		} else {
			buf[1] = buf[0];
			buf[0] = '\033';
			len = 2;
		}
	}
	ttysend(buf, len);
}


void
cmessage(XEvent *e)
{
	/*
	 * See xembed specs
	 *  http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
	 */
	if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
		if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
			xw.state |= WIN_FOCUSED;
			xseturgency(0);
		} else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
			xw.state &= ~WIN_FOCUSED;
		}
	} else if (e->xclient.data.l[0] == xw.wmdeletewin) {
		/* Send SIGHUP to shell */
		kill(pid, SIGHUP);
		exit(0);
	}
}

void
cresize(int width, int height)
{
	int col, row;

	if (width != 0)
		xw.w = width;
		win.w = width;
	if (height != 0)
		xw.h = height;
		win.h = height;

	col = (xw.w - 2 * borderpx) / xw.cw;
	row = (xw.h - 2 * borderpx) / xw.ch;
	col = (win.w - 2 * borderpx) / win.cw;
	row = (win.h - 2 * borderpx) / win.ch;

	tresize(col, row);
	xresize(col, row);
}

void
resize(XEvent *e)
{
	if (e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
		return;

	cresize(e->xconfigure.width, e->xconfigure.height);
	ttyresize();
}

void
run(void)
{
	XEvent ev;
	int w = xw.w, h = xw.h;
	fd_set rfd;
	int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
	struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
	long deltatime;

	/* Waiting for window mapping */
	do {
		XNextEvent(xw.dpy, &ev);
		/*
		 * This XFilterEvent call is required because of XOpenIM. It
		 * does filter out the key event and some client message for
		 * the input method too.
		 */
		if (XFilterEvent(&ev, None))
			continue;
		if (ev.type == ConfigureNotify) {
			w = ev.xconfigure.width;
			h = ev.xconfigure.height;
		}
	} while (ev.type != MapNotify);

	cresize(w, h);
	ttynew();
	ttyresize();

	clock_gettime(CLOCK_MONOTONIC, &last);
	lastblink = last;

	for (xev = actionfps;;) {
		FD_ZERO(&rfd);
		FD_SET(cmdfd, &rfd);
		FD_SET(xfd, &rfd);

		if (pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
			if (errno == EINTR)
				continue;
			die("select failed: %s\n", strerror(errno));
		}
		if (FD_ISSET(cmdfd, &rfd)) {
			ttyread();
			if (blinktimeout) {
				blinkset = tattrset(ATTR_BLINK);
				if (!blinkset)
					MODBIT(term.mode, 0, MODE_BLINK);
			}
		}

		if (FD_ISSET(xfd, &rfd))
			xev = actionfps;

		clock_gettime(CLOCK_MONOTONIC, &now);
		drawtimeout.tv_sec = 0;
		drawtimeout.tv_nsec =  (1000 * 1E6)/ xfps;
		tv = &drawtimeout;

		dodraw = 0;
		if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
			tsetdirtattr(ATTR_BLINK);
			term.mode ^= MODE_BLINK;
			lastblink = now;
			dodraw = 1;
		}
		deltatime = TIMEDIFF(now, last);
		if (deltatime > 1000 / (xev ? xfps : actionfps)) {
			dodraw = 1;
			last = now;
		}

		if (dodraw) {
			while (XPending(xw.dpy)) {
				XNextEvent(xw.dpy, &ev);
				if (XFilterEvent(&ev, None))
					continue;
				if (handler[ev.type])
					(handler[ev.type])(&ev);
			}

			draw();
			XFlush(xw.dpy);

			if (xev && !FD_ISSET(xfd, &rfd))
				xev--;
			if (!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
				if (blinkset) {
					if (TIMEDIFF(now, lastblink) \
							> blinktimeout) {
						drawtimeout.tv_nsec = 1000;
					} else {
						drawtimeout.tv_nsec = (1E6 * \
							(blinktimeout - \
							TIMEDIFF(now,
								lastblink)));
					}
					drawtimeout.tv_sec = \
					    drawtimeout.tv_nsec / 1E9;
					drawtimeout.tv_nsec %= (long)1E9;
				} else {
					tv = NULL;
				}
			}
		}
	}
}

void
usage(void)
{
	die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"


@@ 4467,72 2640,3 @@ usage(void)
	    "          [-T title] [-t title] [-w windowid] -l line"
	    " [stty_args ...]\n", argv0, argv0);
}

int
main(int argc, char *argv[])
{
	xw.l = xw.t = 0;
	xw.isfixed = False;
	xw.cursor = cursorshape;

	ARGBEGIN {
	case 'a':
		allowaltscreen = 0;
		break;
	case 'c':
		opt_class = EARGF(usage());
		break;
	case 'e':
		if (argc > 0)
			--argc, ++argv;
		goto run;
	case 'f':
		opt_font = EARGF(usage());
		break;
	case 'g':
		xw.gm = XParseGeometry(EARGF(usage()),
				&xw.l, &xw.t, &cols, &rows);
		break;
	case 'i':
		xw.isfixed = 1;
		break;
	case 'o':
		opt_io = EARGF(usage());
		break;
	case 'l':
		opt_line = EARGF(usage());
		break;
	case 'n':
		opt_name = EARGF(usage());
		break;
	case 't':
	case 'T':
		opt_title = EARGF(usage());
		break;
	case 'w':
		opt_embed = EARGF(usage());
		break;
	case 'v':
		die("%s " VERSION " (c) 2010-2016 st engineers\n", argv0);
		break;
	default:
		usage();
	} ARGEND;

run:
	if (argc > 0) {
		/* eat all remaining arguments */
		opt_cmd = argv;
		if (!opt_title && !opt_line)
			opt_title = basename(xstrdup(argv[0]));
	}
	setlocale(LC_CTYPE, "");
	XSetLocaleModifiers("");
	tnew(MAX(cols, 1), MAX(rows, 1));
	xinit();
	selinit();
	run();

	return 0;
}



A st.h => st.h +272 -0
@@ 0,0 1,272 @@
/* See LICENSE for license details. */

/* Arbitrary sizes */
#define UTF_SIZ       4

/* 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 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 IS_SET(flag)		((term.mode & (flag)) != 0)
#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 term_mode {
	MODE_WRAP        = 1 << 0,
	MODE_INSERT      = 1 << 1,
	MODE_APPKEYPAD   = 1 << 2,
	MODE_ALTSCREEN   = 1 << 3,
	MODE_CRLF        = 1 << 4,
	MODE_MOUSEBTN    = 1 << 5,
	MODE_MOUSEMOTION = 1 << 6,
	MODE_REVERSE     = 1 << 7,
	MODE_KBDLOCK     = 1 << 8,
	MODE_HIDE        = 1 << 9,
	MODE_ECHO        = 1 << 10,
	MODE_APPCURSOR   = 1 << 11,
	MODE_MOUSESGR    = 1 << 12,
	MODE_8BIT        = 1 << 13,
	MODE_BLINK       = 1 << 14,
	MODE_FBLINK      = 1 << 15,
	MODE_FOCUS       = 1 << 16,
	MODE_MOUSEX10    = 1 << 17,
	MODE_MOUSEMANY   = 1 << 18,
	MODE_BRCKTPASTE  = 1 << 19,
	MODE_PRINT       = 1 << 20,
	MODE_UTF8        = 1 << 21,
	MODE_SIXEL       = 1 << 22,
	MODE_MOUSE       = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
	                  |MODE_MOUSEMANY,
};

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
};

enum window_state {
	WIN_VISIBLE = 1,
	WIN_FOCUSED = 2
};

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

typedef uint_least32_t Rune;

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 */
	int *dirty;  /* dirtyness of lines */
	GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
	TCursor c;    /* cursor */
	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 numlock; /* lock numbers in keyboard */
	int *tabs;
} Term;

/* 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  */
	char state; /* focus, redraw, visible */
	int cursor; /* cursor style */
} TermWindow;

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

typedef struct {
	int mode;
	int type;
	int snap;
	/*
	 * Selection variables:
	 * nb – normalized coordinates of the beginning of the selection
	 * ne – normalized coordinates of the end of the selection
	 * ob – original coordinates of the beginning of the selection
	 * oe – original coordinates of the end of the selection
	 */
	struct {
		int x, y;
	} nb, ne, ob, oe;

	char *primary, *clipboard;
	int alt;
	struct timespec tclick1;
	struct timespec tclick2;

	//Atom xtarget;
} Selection;

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

typedef struct {
	uint mod;
	KeySym keysym;
	void (*func)(const Arg *);
	const Arg arg;
} Shortcut;

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

int tattrset(int);
void tnew(int, int);
void tsetdirt(int, int);
void tsetdirtattr(int);
int match(uint, uint);
void ttynew(void);
size_t ttyread(void);
void ttyresize(void);
void ttysend(char *, size_t);
void ttywrite(const char *, size_t);

void resettitle(void);

char *kmap(KeySym, uint);
void cresize(int, int);
void selclear(void);

void selinit(void);
void selnormalize(void);
int selected(int, int);
char *getsel(void);
int x2col(int);
int y2row(int);

size_t utf8decode(char *, Rune *, size_t);
size_t utf8encode(Rune, char *);

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

void usage(void);

/* Globals */
extern TermWindow win;
extern Term term;
extern Selection sel;
extern int cmdfd;
extern pid_t pid;
extern char **opt_cmd;
extern char *opt_class;
extern char *opt_embed;
extern char *opt_font;
extern char *opt_io;
extern char *opt_line;
extern char *opt_name;
extern char *opt_title;
extern int oldbutton;

extern char *usedfont;
extern double usedfontsize;
extern double defaultfontsize;

/* config.h globals */
extern char font[];
extern int borderpx;
extern float cwscale;
extern float chscale;
extern unsigned int doubleclicktimeout;
extern unsigned int tripleclicktimeout;
extern int allowaltscreen;
extern unsigned int xfps;
extern unsigned int actionfps;
extern unsigned int cursorthickness;
extern unsigned int blinktimeout;
extern char termname[];
extern const char *colorname[];
extern size_t colornamelen;
extern unsigned int defaultfg;
extern unsigned int defaultbg;
extern unsigned int defaultcs;
extern unsigned int defaultrcs;
extern unsigned int cursorshape;
extern unsigned int cols;
extern unsigned int rows;
extern unsigned int mouseshape;
extern unsigned int mousefg;
extern unsigned int mousebg;
extern unsigned int defaultattr;
extern MouseShortcut mshortcuts[];
extern size_t mshortcutslen;
extern Shortcut shortcuts[];
extern size_t shortcutslen;
extern uint forceselmod;
extern uint selmasks[];
extern size_t selmaskslen;
extern char ascii_printable[];


A win.h => win.h +29 -0
@@ 0,0 1,29 @@
/* See LICENSE for license details. */

/* X modifiers */
#define XK_ANY_MOD    UINT_MAX
#define XK_NO_MOD     0
#define XK_SWITCH_MOD (1<<13)

typedef XftGlyphFontSpec GlyphFontSpec;

void draw(void);
void drawregion(int, int, int, int);
void run(void);

void xbell(int);
void xclipcopy(void);
void xclippaste(void);
void xhints(void);
void xinit(void);
void xloadcols(void);
int xsetcolorname(int, const char *);
void xloadfonts(char *, double);
void xsetenv(void);
void xsettitle(char *);
void xsetpointermotion(int);
void xseturgency(int);
void xunloadfonts(void);
void xresize(int, int);
void xselpaste(void);
unsigned long xwinid(void);


A x.c => x.c +1766 -0
@@ 0,0 1,1766 @@
/* See LICENSE for license details. */
#include <errno.h>
#include <locale.h>
#include <signal.h>
#include <stdint.h>
#include <sys/select.h>
#include <time.h>
#include <unistd.h>
#include <libgen.h>
#include <X11/Xatom.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/cursorfont.h>
#include <X11/keysym.h>
#include <X11/Xft/Xft.h>
#include <X11/XKBlib.h>

#include "arg.h"

#define Glyph Glyph_
#define Font Font_

#include "win.h"
#include "st.h"

/* XEMBED messages */
#define XEMBED_FOCUS_IN  4
#define XEMBED_FOCUS_OUT 5

/* macros */
#define TRUERED(x)		(((x) & 0xff0000) >> 8)
#define TRUEGREEN(x)		(((x) & 0xff00))
#define TRUEBLUE(x)		(((x) & 0xff) << 8)

typedef XftDraw *Draw;
typedef XftColor Color;

/* Purely graphic info */
typedef struct {
	Display *dpy;
	Colormap cmap;
	Window win;
	Drawable buf;
	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;
} XSelection;

/* Font structure */
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;

static inline ushort sixd_to_16bit(int);
static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
static void xdrawglyph(Glyph, int, int);
static void xclear(int, int, int, int);
static void xdrawcursor(void);
static int xgeommasktogravity(int);
static int xloadfont(Font *, FcPattern *);
static void xsetsel(char *, Time);
static void xunloadfont(Font *);

static void expose(XEvent *);
static void visibility(XEvent *);
static void unmap(XEvent *);
static void kpress(XEvent *);
static void cmessage(XEvent *);
static void resize(XEvent *);
static void focus(XEvent *);
static void brelease(XEvent *);
static void bpress(XEvent *);
static void bmotion(XEvent *);
static void propnotify(XEvent *);
static void selnotify(XEvent *);
static void selclear_(XEvent *);
static void selrequest(XEvent *);

static void selcopy(Time);
static void getbuttoninfo(XEvent *);
static void mousereport(XEvent *);

static void (*handler[LASTEvent])(XEvent *) = {
	[KeyPress] = kpress,
	[ClientMessage] = cmessage,
	[ConfigureNotify] = resize,
	[VisibilityNotify] = visibility,
	[UnmapNotify] = unmap,
	[Expose] = expose,
	[FocusIn] = focus,
	[FocusOut] = focus,
	[MotionNotify] = bmotion,
	[ButtonPress] = bpress,
	[ButtonRelease] = brelease,
/*
 * Uncomment if you want the selection to disappear when you select something
 * different in another window.
 */
/*	[SelectionClear] = selclear_, */
	[SelectionNotify] = selnotify,
/*
 * PropertyNotify is only turned on when there is some INCR transfer happening
 * for the selection retrieval.
 */
	[PropertyNotify] = propnotify,
	[SelectionRequest] = selrequest,
};

/* Globals */
static DC dc;
static XWindow xw;
static XSelection xsel;

/* Font Ring Cache */
enum {
	FRC_NORMAL,
	FRC_ITALIC,
	FRC_BOLD,
	FRC_ITALICBOLD
};

typedef struct {
	XftFont *font;
	int flags;
	Rune unicodep;
} Fontcache;

/* Fontcache is an array now. A new font will be appended to the array. */
static Fontcache frc[16];
static int frclen = 0;

void
getbuttoninfo(XEvent *e)
{
	int type;
	uint state = e->xbutton.state & ~(Button1Mask | forceselmod);

	sel.alt = IS_SET(MODE_ALTSCREEN);

	sel.oe.x = x2col(e->xbutton.x);
	sel.oe.y = y2row(e->xbutton.y);
	selnormalize();

	sel.type = SEL_REGULAR;
	for (type = 1; type < selmaskslen; ++type) {
		if (match(selmasks[type], state)) {
			sel.type = type;
			break;
		}
	}
}

void
mousereport(XEvent *e)
{
	int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
	    button = e->xbutton.button, state = e->xbutton.state,
	    len;
	char buf[40];
	static int ox, oy;

	/* from urxvt */
	if (e->xbutton.type == MotionNotify) {
		if (x == ox && y == oy)
			return;
		if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
			return;
		/* MOUSE_MOTION: no reporting if no button is pressed */
		if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
			return;

		button = oldbutton + 32;
		ox = x;
		oy = y;
	} else {
		if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
			button = 3;
		} else {
			button -= Button1;
			if (button >= 3)
				button += 64 - 3;
		}
		if (e->xbutton.type == ButtonPress) {
			oldbutton = button;
			ox = x;
			oy = y;
		} else if (e->xbutton.type == ButtonRelease) {
			oldbutton = 3;
			/* MODE_MOUSEX10: no button release reporting */
			if (IS_SET(MODE_MOUSEX10))
				return;
			if (button == 64 || button == 65)
				return;
		}
	}

	if (!IS_SET(MODE_MOUSEX10)) {
		button += ((state & ShiftMask  ) ? 4  : 0)
			+ ((state & Mod4Mask   ) ? 8  : 0)
			+ ((state & ControlMask) ? 16 : 0);
	}

	if (IS_SET(MODE_MOUSESGR)) {
		len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
				button, x+1, y+1,
				e->xbutton.type == ButtonRelease ? 'm' : 'M');
	} else if (x < 223 && y < 223) {
		len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
				32+button, 32+x+1, 32+y+1);
	} else {
		return;
	}

	ttywrite(buf, len);
}

void
bpress(XEvent *e)
{
	struct timespec now;
	MouseShortcut *ms;

	if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
		mousereport(e);
		return;
	}

	for (ms = mshortcuts; ms < mshortcuts + mshortcutslen; ms++) {
		if (e->xbutton.button == ms->b
				&& match(ms->mask, e->xbutton.state)) {
			ttysend(ms->s, strlen(ms->s));
			return;
		}
	}

	if (e->xbutton.button == Button1) {
		clock_gettime(CLOCK_MONOTONIC, &now);

		/* Clear previous selection, logically and visually. */
		selclear_(NULL);
		sel.mode = SEL_EMPTY;
		sel.type = SEL_REGULAR;
		sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
		sel.oe.y = sel.ob.y = y2row(e->xbutton.y);

		/*
		 * If the user clicks below predefined timeouts specific
		 * snapping behaviour is exposed.
		 */
		if (TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
			sel.snap = SNAP_LINE;
		} else if (TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
			sel.snap = SNAP_WORD;
		} else {
			sel.snap = 0;
		}
		selnormalize();

		if (sel.snap != 0)
			sel.mode = SEL_READY;
		tsetdirt(sel.nb.y, sel.ne.y);
		sel.tclick2 = sel.tclick1;
		sel.tclick1 = now;
	}
}

void
selcopy(Time t)
{
	xsetsel(getsel(), t);
}

void
propnotify(XEvent *e)
{
	XPropertyEvent *xpev;
	Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);

	xpev = &e->xproperty;
	if (xpev->state == PropertyNewValue &&
			(xpev->atom == XA_PRIMARY ||
			 xpev->atom == clipboard)) {
		selnotify(e);
	}
}

void
selnotify(XEvent *e)
{
	ulong nitems, ofs, rem;
	int format;
	uchar *data, *last, *repl;
	Atom type, incratom, property;

	incratom = XInternAtom(xw.dpy, "INCR", 0);

	ofs = 0;
	if (e->type == SelectionNotify) {
		property = e->xselection.property;
	} else if(e->type == PropertyNotify) {
		property = e->xproperty.atom;
	} else {
		return;
	}
	if (property == None)
		return;

	do {
		if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
					BUFSIZ/4, False, AnyPropertyType,
					&type, &format, &nitems, &rem,
					&data)) {
			fprintf(stderr, "Clipboard allocation failed\n");
			return;
		}

		if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
			/*
			 * If there is some PropertyNotify with no data, then
			 * this is the signal of the selection owner that all
			 * data has been transferred. We won't need to receive
			 * PropertyNotify events anymore.
			 */
			MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
			XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
					&xw.attrs);
		}

		if (type == incratom) {
			/*
			 * Activate the PropertyNotify events so we receive
			 * when the selection owner does send us the next
			 * chunk of data.
			 */
			MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
			XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
					&xw.attrs);

			/*
			 * Deleting the property is the transfer start signal.
			 */
			XDeleteProperty(xw.dpy, xw.win, (int)property);
			continue;
		}

		/*
		 * As seen in getsel:
		 * Line endings are inconsistent in the terminal and GUI world
		 * copy and pasting. When receiving some selection data,
		 * replace all '\n' with '\r'.
		 * FIXME: Fix the computer world.
		 */
		repl = data;
		last = data + nitems * format / 8;
		while ((repl = memchr(repl, '\n', last - repl))) {
			*repl++ = '\r';
		}

		if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
			ttywrite("\033[200~", 6);
		ttysend((char *)data, nitems * format / 8);
		if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
			ttywrite("\033[201~", 6);
		XFree(data);
		/* number of 32-bit chunks returned */
		ofs += nitems * format / 32;
	} while (rem > 0);

	/*
	 * Deleting the property again tells the selection owner to send the
	 * next data chunk in the property.
	 */
	XDeleteProperty(xw.dpy, xw.win, (int)property);
}

void
xselpaste(void)
{
	XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY,
			xw.win, CurrentTime);
}

void
xclipcopy(void)
{
	Atom clipboard;

	if (sel.clipboard != NULL)
		free(sel.clipboard);

	if (sel.primary != NULL) {
		sel.clipboard = xstrdup(sel.primary);
		clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
		XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
	}
}

void
xclippaste(void)
{
	Atom clipboard;

	clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
	XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard,
			xw.win, CurrentTime);
}

void
selclear_(XEvent *e)
{
	selclear();
}

void
selrequest(XEvent *e)
{
	XSelectionRequestEvent *xsre;
	XSelectionEvent xev;
	Atom xa_targets, string, clipboard;
	char *seltext;

	xsre = (XSelectionRequestEvent *) e;
	xev.type = SelectionNotify;
	xev.requestor = xsre->requestor;
	xev.selection = xsre->selection;
	xev.target = xsre->target;
	xev.time = xsre->time;
	if (xsre->property == None)
		xsre->property = xsre->target;

	/* reject */
	xev.property = None;

	xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
	if (xsre->target == xa_targets) {
		/* respond with the supported type */
		string = xsel.xtarget;
		XChangeProperty(xsre->display, xsre->requestor, xsre->property,
				XA_ATOM, 32, PropModeReplace,
				(uchar *) &string, 1);
		xev.property = xsre->property;
	} else if (xsre->target == xsel.xtarget || xsre->target == XA_STRING) {
		/*
		 * xith XA_STRING non ascii characters may be incorrect in the
		 * requestor. It is not our problem, use utf8.
		 */
		clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
		if (xsre->selection == XA_PRIMARY) {
			seltext = sel.primary;
		} else if (xsre->selection == clipboard) {
			seltext = sel.clipboard;
		} else {
			fprintf(stderr,
				"Unhandled clipboard selection 0x%lx\n",
				xsre->selection);
			return;
		}
		if (seltext != NULL) {
			XChangeProperty(xsre->display, xsre->requestor,
					xsre->property, xsre->target,
					8, PropModeReplace,
					(uchar *)seltext, strlen(seltext));
			xev.property = xsre->property;
		}
	}

	/* all done, send a notification to the listener */
	if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
		fprintf(stderr, "Error sending SelectionNotify event\n");
}

void
xsetsel(char *str, Time t)
{
	free(sel.primary);
	sel.primary = str;

	XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
	if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
		selclear_(NULL);
}

void
brelease(XEvent *e)
{
	if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
		mousereport(e);
		return;
	}

	if (e->xbutton.button == Button2) {
		xselpaste();
	} else if (e->xbutton.button == Button1) {
		if (sel.mode == SEL_READY) {
			getbuttoninfo(e);
			selcopy(e->xbutton.time);
		} else
			selclear_(NULL);
		sel.mode = SEL_IDLE;
		tsetdirt(sel.nb.y, sel.ne.y);
	}
}

void
bmotion(XEvent *e)
{
	int oldey, oldex, oldsby, oldsey;

	if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
		mousereport(e);
		return;
	}

	if (!sel.mode)
		return;

	sel.mode = SEL_READY;
	oldey = sel.oe.y;
	oldex = sel.oe.x;
	oldsby = sel.nb.y;
	oldsey = sel.ne.y;
	getbuttoninfo(e);

	if (oldey != sel.oe.y || oldex != sel.oe.x)
		tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
}

void
xresize(int col, int row)
{
	win.tw = MAX(1, col * win.cw);
	win.th = MAX(1, row * win.ch);

	XFreePixmap(xw.dpy, xw.buf);
	xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
			DefaultDepth(xw.dpy, xw.scr));
	XftDrawChange(xw.draw, xw.buf);
	xclear(0, 0, win.w, win.h);
}

ushort
sixd_to_16bit(int x)
{
	return x == 0 ? 0 : 0x3737 + 0x2828 * x;
}

int
xloadcolor(int i, const char *name, Color *ncolor)
{
	XRenderColor color = { .alpha = 0xffff };

	if (!name) {
		if (BETWEEN(i, 16, 255)) { /* 256 color */
			if (i < 6*6*6+16) { /* same colors as xterm */
				color.red   = sixd_to_16bit( ((i-16)/36)%6 );
				color.green = sixd_to_16bit( ((i-16)/6) %6 );
				color.blue  = sixd_to_16bit( ((i-16)/1) %6 );
			} else { /* greyscale */
				color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
				color.green = color.blue = color.red;
			}
			return XftColorAllocValue(xw.dpy, xw.vis,
			                          xw.cmap, &color, ncolor);
		} else
			name = colorname[i];
	}

	return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
}

void
xloadcols(void)
{
	int i;
	static int loaded;
	Color *cp;

	dc.collen = MAX(colornamelen, 256);
	dc.col = xmalloc(dc.collen * sizeof(Color));

	if (loaded) {
		for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
			XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
	}

	for (i = 0; i < dc.collen; i++)
		if (!xloadcolor(i, NULL, &dc.col[i])) {
			if (colorname[i])
				die("Could not allocate color '%s'\n", colorname[i]);
			else
				die("Could not allocate color %d\n", i);
		}
	loaded = 1;
}

int
xsetcolorname(int x, const char *name)
{
	Color ncolor;

	if (!BETWEEN(x, 0, dc.collen))
		return 1;


	if (!xloadcolor(x, name, &ncolor))
		return 1;

	XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
	dc.col[x] = ncolor;

	return 0;
}

/*
 * Absolute coordinates.
 */
void
xclear(int x1, int y1, int x2, int y2)
{
	XftDrawRect(xw.draw,
			&dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
			x1, y1, x2-x1, y2-y1);
}

void
xhints(void)
{
	XClassHint class = {opt_name ? opt_name : termname,
	                    opt_class ? opt_class : termname};
	XWMHints wm = {.flags = InputHint, .input = 1};
	XSizeHints *sizeh = NULL;

	sizeh = XAllocSizeHints();

	sizeh->flags = PSize | PResizeInc | PBaseSize;
	sizeh->height = win.h;
	sizeh->width = win.w;
	sizeh->height_inc = win.ch;
	sizeh->width_inc = win.cw;
	sizeh->base_height = 2 * borderpx;
	sizeh->base_width = 2 * borderpx;
	if (xw.isfixed) {
		sizeh->flags |= PMaxSize | PMinSize;
		sizeh->min_width = sizeh->max_width = win.w;
		sizeh->min_height = sizeh->max_height = win.h;
	}
	if (xw.gm & (XValue|YValue)) {
		sizeh->flags |= USPosition | PWinGravity;
		sizeh->x = xw.l;
		sizeh->y = xw.t;
		sizeh->win_gravity = xgeommasktogravity(xw.gm);
	}

	XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
			&class);
	XFree(sizeh);
}

int
xgeommasktogravity(int mask)
{
	switch (mask & (XNegative|YNegative)) {
	case 0:
		return NorthWestGravity;
	case XNegative:
		return NorthEastGravity;
	case YNegative:
		return SouthWestGravity;
	}

	return SouthEastGravity;
}

int
xloadfont(Font *f, FcPattern *pattern)
{
	FcPattern *configured;
	FcPattern *match;
	FcResult result;
	XGlyphInfo extents;
	int wantattr, haveattr;

	/*
	 * Manually configure instead of calling XftMatchFont
	 * so that we can use the configured pattern for
	 * "missing glyph" lookups.
	 */
	configured = FcPatternDuplicate(pattern);
	if (!configured)
		return 1;

	FcConfigSubstitute(NULL, configured, FcMatchPattern);
	XftDefaultSubstitute(xw.dpy, xw.scr, configured);

	match = FcFontMatch(NULL, configured, &result);
	if (!match) {
		FcPatternDestroy(configured);
		return 1;
	}

	if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
		FcPatternDestroy(configured);
		FcPatternDestroy(match);
		return 1;
	}

	if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
	    XftResultMatch)) {
		/*
		 * Check if xft was unable to find a font with the appropriate
		 * slant but gave us one anyway. Try to mitigate.
		 */
		if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
		    &haveattr) != XftResultMatch) || haveattr < wantattr) {
			f->badslant = 1;
			fputs("st: font slant does not match\n", stderr);
		}
	}

	if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
	    XftResultMatch)) {
		if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
		    &haveattr) != XftResultMatch) || haveattr != wantattr) {
			f->badweight = 1;
			fputs("st: font weight does not match\n", stderr);
		}
	}

	XftTextExtentsUtf8(xw.dpy, f->match,
		(const FcChar8 *) ascii_printable,
		strlen(ascii_printable), &extents);

	f->set = NULL;
	f->pattern = configured;

	f->ascent = f->match->ascent;
	f->descent = f->match->descent;
	f->lbearing = 0;
	f->rbearing = f->match->max_advance_width;

	f->height = f->ascent + f->descent;
	f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));

	return 0;
}

void
xloadfonts(char *fontstr, double fontsize)
{
	FcPattern *pattern;
	double fontval;
	float ceilf(float);

	if (fontstr[0] == '-') {
		pattern = XftXlfdParse(fontstr, False, False);
	} else {
		pattern = FcNameParse((FcChar8 *)fontstr);
	}

	if (!pattern)
		die("st: can't open font %s\n", fontstr);

	if (fontsize > 1) {
		FcPatternDel(pattern, FC_PIXEL_SIZE);
		FcPatternDel(pattern, FC_SIZE);
		FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
		usedfontsize = fontsize;
	} else {
		if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
				FcResultMatch) {
			usedfontsize = fontval;
		} else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
				FcResultMatch) {
			usedfontsize = -1;
		} else {
			/*
			 * Default font size is 12, if none given. This is to
			 * have a known usedfontsize value.
			 */
			FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
			usedfontsize = 12;
		}
		defaultfontsize = usedfontsize;
	}

	if (xloadfont(&dc.font, pattern))
		die("st: can't open font %s\n", fontstr);

	if (usedfontsize < 0) {
		FcPatternGetDouble(dc.font.match->pattern,
		                   FC_PIXEL_SIZE, 0, &fontval);
		usedfontsize = fontval;
		if (fontsize == 0)
			defaultfontsize = fontval;
	}

	/* Setting character width and height. */
	win.cw = ceilf(dc.font.width * cwscale);
	win.ch = ceilf(dc.font.height * chscale);

	FcPatternDel(pattern, FC_SLANT);
	FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
	if (xloadfont(&dc.ifont, pattern))
		die("st: can't open font %s\n", fontstr);

	FcPatternDel(pattern, FC_WEIGHT);
	FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
	if (xloadfont(&dc.ibfont, pattern))
		die("st: can't open font %s\n", fontstr);

	FcPatternDel(pattern, FC_SLANT);
	FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
	if (xloadfont(&dc.bfont, pattern))
		die("st: can't open font %s\n", fontstr);

	FcPatternDestroy(pattern);
}

void
xunloadfont(Font *f)
{
	XftFontClose(xw.dpy, f->match);
	FcPatternDestroy(f->pattern);
	if (f->set)
		FcFontSetDestroy(f->set);
}

void
xunloadfonts(void)
{
	/* Free the loaded fonts in the font cache.  */
	while (frclen > 0)
		XftFontClose(xw.dpy, frc[--frclen].font);

	xunloadfont(&dc.font);
	xunloadfont(&dc.bfont);
	xunloadfont(&dc.ifont);
	xunloadfont(&dc.ibfont);
}

void
xinit(void)
{
	XGCValues gcvalues;
	Cursor cursor;
	Window parent;
	pid_t thispid = getpid();
	XColor xmousefg, xmousebg;

	if (!(xw.dpy = XOpenDisplay(NULL)))
		die("Can't open display\n");
	xw.scr = XDefaultScreen(xw.dpy);
	xw.vis = XDefaultVisual(xw.dpy, xw.scr);

	/* font */
	if (!FcInit())
		die("Could not init fontconfig.\n");

	usedfont = (opt_font == NULL)? font : opt_font;
	xloadfonts(usedfont, 0);

	/* colors */
	xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
	xloadcols();

	/* adjust fixed window geometry */
	win.w = 2 * borderpx + term.col * win.cw;
	win.h = 2 * borderpx + term.row * win.ch;
	if (xw.gm & XNegative)
		xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
	if (xw.gm & YNegative)
		xw.t += DisplayHeight(xw.dpy, xw.scr) - win.h - 2;

	/* Events */
	xw.attrs.background_pixel = dc.col[defaultbg].pixel;
	xw.attrs.border_pixel = dc.col[defaultbg].pixel;
	xw.attrs.bit_gravity = NorthWestGravity;
	xw.attrs.event_mask = FocusChangeMask | KeyPressMask
		| ExposureMask | VisibilityChangeMask | StructureNotifyMask
		| ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
	xw.attrs.colormap = xw.cmap;

	if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
		parent = XRootWindow(xw.dpy, xw.scr);
	xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
			win.w, win.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
			xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
			| CWEventMask | CWColormap, &xw.attrs);

	memset(&gcvalues, 0, sizeof(gcvalues));
	gcvalues.graphics_exposures = False;
	dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
			&gcvalues);
	xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
			DefaultDepth(xw.dpy, xw.scr));
	XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
	XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);

	/* Xft rendering context */
	xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);

	/* input methods */
	if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
		XSetLocaleModifiers("@im=local");
		if ((xw.xim =  XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
			XSetLocaleModifiers("@im=");
			if ((xw.xim = XOpenIM(xw.dpy,
					NULL, NULL, NULL)) == NULL) {
				die("XOpenIM failed. Could not open input"
					" device.\n");
			}
		}
	}
	xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
					   | XIMStatusNothing, XNClientWindow, xw.win,
					   XNFocusWindow, xw.win, NULL);
	if (xw.xic == NULL)
		die("XCreateIC failed. Could not obtain input method.\n");

	/* white cursor, black outline */
	cursor = XCreateFontCursor(xw.dpy, mouseshape);
	XDefineCursor(xw.dpy, xw.win, cursor);

	if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
		xmousefg.red   = 0xffff;
		xmousefg.green = 0xffff;
		xmousefg.blue  = 0xffff;
	}

	if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
		xmousebg.red   = 0x0000;
		xmousebg.green = 0x0000;
		xmousebg.blue  = 0x0000;
	}

	XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);

	xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
	xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
	xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
	XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);

	xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
	XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
			PropModeReplace, (uchar *)&thispid, 1);

	resettitle();
	XMapWindow(xw.dpy, xw.win);
	xhints();
	XSync(xw.dpy, False);

	xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
	if (xsel.xtarget == None)
		xsel.xtarget = XA_STRING;
}

int
xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
{
	float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp;
	ushort mode, prevmode = USHRT_MAX;
	Font *font = &dc.font;
	int frcflags = FRC_NORMAL;
	float runewidth = win.cw;
	Rune rune;
	FT_UInt glyphidx;
	FcResult fcres;
	FcPattern *fcpattern, *fontpattern;
	FcFontSet *fcsets[] = { NULL };
	FcCharSet *fccharset;
	int i, f, numspecs = 0;

	for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
		/* Fetch rune and mode for current glyph. */
		rune = glyphs[i].u;
		mode = glyphs[i].mode;

		/* Skip dummy wide-character spacing. */
		if (mode == ATTR_WDUMMY)
			continue;

		/* Determine font for glyph if different from previous glyph. */
		if (prevmode != mode) {
			prevmode = mode;
			font = &dc.font;
			frcflags = FRC_NORMAL;
			runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
			if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
				font = &dc.ibfont;
				frcflags = FRC_ITALICBOLD;
			} else if (mode & ATTR_ITALIC) {
				font = &dc.ifont;
				frcflags = FRC_ITALIC;
			} else if (mode & ATTR_BOLD) {
				font = &dc.bfont;
				frcflags = FRC_BOLD;
			}
			yp = winy + font->ascent;
		}

		/* Lookup character index with default font. */
		glyphidx = XftCharIndex(xw.dpy, font->match, rune);
		if (glyphidx) {
			specs[numspecs].font = font->match;
			specs[numspecs].glyph = glyphidx;
			specs[numspecs].x = (short)xp;
			specs[numspecs].y = (short)yp;
			xp += runewidth;
			numspecs++;
			continue;
		}

		/* Fallback on font cache, search the font cache for match. */
		for (f = 0; f < frclen; f++) {
			glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
			/* Everything correct. */
			if (glyphidx && frc[f].flags == frcflags)
				break;
			/* We got a default font for a not found glyph. */
			if (!glyphidx && frc[f].flags == frcflags
					&& frc[f].unicodep == rune) {
				break;
			}
		}

		/* Nothing was found. Use fontconfig to find matching font. */
		if (f >= frclen) {
			if (!font->set)
				font->set = FcFontSort(0, font->pattern,
				                       1, 0, &fcres);
			fcsets[0] = font->set;

			/*
			 * Nothing was found in the cache. Now use
			 * some dozen of Fontconfig calls to get the
			 * font for one single character.
			 *
			 * Xft and fontconfig are design failures.
			 */
			fcpattern = FcPatternDuplicate(font->pattern);
			fccharset = FcCharSetCreate();

			FcCharSetAddChar(fccharset, rune);
			FcPatternAddCharSet(fcpattern, FC_CHARSET,
					fccharset);
			FcPatternAddBool(fcpattern, FC_SCALABLE, 1);

			FcConfigSubstitute(0, fcpattern,
					FcMatchPattern);
			FcDefaultSubstitute(fcpattern);

			fontpattern = FcFontSetMatch(0, fcsets, 1,
					fcpattern, &fcres);

			/*
			 * Overwrite or create the new cache entry.
			 */
			if (frclen >= LEN(frc)) {
				frclen = LEN(frc) - 1;
				XftFontClose(xw.dpy, frc[frclen].font);
				frc[frclen].unicodep = 0;
			}

			frc[frclen].font = XftFontOpenPattern(xw.dpy,
					fontpattern);
			frc[frclen].flags = frcflags;
			frc[frclen].unicodep = rune;

			glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);

			f = frclen;
			frclen++;

			FcPatternDestroy(fcpattern);
			FcCharSetDestroy(fccharset);
		}

		specs[numspecs].font = frc[f].font;
		specs[numspecs].glyph = glyphidx;
		specs[numspecs].x = (short)xp;
		specs[numspecs].y = (short)yp;
		xp += runewidth;
		numspecs++;
	}

	return numspecs;
}

void
xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
{
	int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
	int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
	    width = charlen * win.cw;
	Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
	XRenderColor colfg, colbg;
	XRectangle r;

	/* Fallback on color display for attributes not supported by the font */
	if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
		if (dc.ibfont.badslant || dc.ibfont.badweight)
			base.fg = defaultattr;
	} else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
	    (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
		base.fg = defaultattr;
	}

	if (IS_TRUECOL(base.fg)) {
		colfg.alpha = 0xffff;
		colfg.red = TRUERED(base.fg);
		colfg.green = TRUEGREEN(base.fg);
		colfg.blue = TRUEBLUE(base.fg);
		XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
		fg = &truefg;
	} else {
		fg = &dc.col[base.fg];
	}

	if (IS_TRUECOL(base.bg)) {
		colbg.alpha = 0xffff;
		colbg.green = TRUEGREEN(base.bg);
		colbg.red = TRUERED(base.bg);
		colbg.blue = TRUEBLUE(base.bg);
		XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
		bg = &truebg;
	} else {
		bg = &dc.col[base.bg];
	}

	/* Change basic system colors [0-7] to bright system colors [8-15] */
	if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
		fg = &dc.col[base.fg + 8];

	if (IS_SET(MODE_REVERSE)) {
		if (fg == &dc.col[defaultfg]) {
			fg = &dc.col[defaultbg];
		} else {
			colfg.red = ~fg->color.red;
			colfg.green = ~fg->color.green;
			colfg.blue = ~fg->color.blue;
			colfg.alpha = fg->color.alpha;
			XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
					&revfg);
			fg = &revfg;
		}

		if (bg == &dc.col[defaultbg]) {
			bg = &dc.col[defaultfg];
		} else {
			colbg.red = ~bg->color.red;
			colbg.green = ~bg->color.green;
			colbg.blue = ~bg->color.blue;
			colbg.alpha = bg->color.alpha;
			XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
					&revbg);
			bg = &revbg;
		}
	}

	if (base.mode & ATTR_REVERSE) {
		temp = fg;
		fg = bg;
		bg = temp;
	}

	if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
		colfg.red = fg->color.red / 2;
		colfg.green = fg->color.green / 2;
		colfg.blue = fg->color.blue / 2;
		XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
		fg = &revfg;
	}

	if (base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
		fg = bg;

	if (base.mode & ATTR_INVISIBLE)
		fg = bg;

	/* Intelligent cleaning up of the borders. */
	if (x == 0) {
		xclear(0, (y == 0)? 0 : winy, borderpx,
			winy + win.ch + ((y >= term.row-1)? win.h : 0));
	}
	if (x + charlen >= term.col) {
		xclear(winx + width, (y == 0)? 0 : winy, win.w,
			((y >= term.row-1)? win.h : (winy + win.ch)));
	}
	if (y == 0)
		xclear(winx, 0, winx + width, borderpx);
	if (y == term.row-1)
		xclear(winx, winy + win.ch, winx + width, win.h);

	/* Clean up the region we want to draw to. */
	XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);

	/* Set the clip region because Xft is sometimes dirty. */
	r.x = 0;
	r.y = 0;
	r.height = win.ch;
	r.width = width;
	XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);

	/* Render the glyphs. */
	XftDrawGlyphFontSpec(xw.draw, fg, specs, len);

	/* Render underline and strikethrough. */
	if (base.mode & ATTR_UNDERLINE) {
		XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
				width, 1);
	}

	if (base.mode & ATTR_STRUCK) {
		XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
				width, 1);
	}

	/* Reset clip to none. */
	XftDrawSetClip(xw.draw, 0);
}

void
xdrawglyph(Glyph g, int x, int y)
{
	int numspecs;
	XftGlyphFontSpec spec;

	numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
	xdrawglyphfontspecs(&spec, g, numspecs, x, y);
}

void
xdrawcursor(void)
{
	static int oldx = 0, oldy = 0;
	int curx;
	Glyph g = {' ', ATTR_NULL, defaultbg, defaultcs}, og;
	int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
	Color drawcol;

	LIMIT(oldx, 0, term.col-1);
	LIMIT(oldy, 0, term.row-1);

	curx = term.c.x;

	/* adjust position if in dummy */
	if (term.line[oldy][oldx].mode & ATTR_WDUMMY)
		oldx--;
	if (term.line[term.c.y][curx].mode & ATTR_WDUMMY)
		curx--;

	/* remove the old cursor */
	og = term.line[oldy][oldx];
	if (ena_sel && selected(oldx, oldy))
		og.mode ^= ATTR_REVERSE;
	xdrawglyph(og, oldx, oldy);

	g.u = term.line[term.c.y][term.c.x].u;

	/*
	 * Select the right color for the right mode.
	 */
	if (IS_SET(MODE_REVERSE)) {
		g.mode |= ATTR_REVERSE;
		g.bg = defaultfg;
		if (ena_sel && selected(term.c.x, term.c.y)) {
			drawcol = dc.col[defaultcs];
			g.fg = defaultrcs;
		} else {
			drawcol = dc.col[defaultrcs];
			g.fg = defaultcs;
		}
	} else {
		if (ena_sel && selected(term.c.x, term.c.y)) {
			drawcol = dc.col[defaultrcs];
			g.fg = defaultfg;
			g.bg = defaultrcs;
		} else {
			drawcol = dc.col[defaultcs];
		}
	}

	if (IS_SET(MODE_HIDE))
		return;

	/* draw the new one */
	if (win.state & WIN_FOCUSED) {
		switch (win.cursor) {
		case 7: /* st extension: snowman */
			utf8decode("☃", &g.u, UTF_SIZ);
		case 0: /* Blinking Block */
		case 1: /* Blinking Block (Default) */
		case 2: /* Steady Block */
			g.mode |= term.line[term.c.y][curx].mode & ATTR_WIDE;
			xdrawglyph(g, term.c.x, term.c.y);
			break;
		case 3: /* Blinking Underline */
		case 4: /* Steady Underline */
			XftDrawRect(xw.draw, &drawcol,
					borderpx + curx * win.cw,
					borderpx + (term.c.y + 1) * win.ch - \
						cursorthickness,
					win.cw, cursorthickness);
			break;
		case 5: /* Blinking bar */
		case 6: /* Steady bar */
			XftDrawRect(xw.draw, &drawcol,
					borderpx + curx * win.cw,
					borderpx + term.c.y * win.ch,
					cursorthickness, win.ch);
			break;
		}
	} else {
		XftDrawRect(xw.draw, &drawcol,
				borderpx + curx * win.cw,
				borderpx + term.c.y * win.ch,
				win.cw - 1, 1);
		XftDrawRect(xw.draw, &drawcol,
				borderpx + curx * win.cw,
				borderpx + term.c.y * win.ch,
				1, win.ch - 1);
		XftDrawRect(xw.draw, &drawcol,
				borderpx + (curx + 1) * win.cw - 1,
				borderpx + term.c.y * win.ch,
				1, win.ch - 1);
		XftDrawRect(xw.draw, &drawcol,
				borderpx + curx * win.cw,
				borderpx + (term.c.y + 1) * win.ch - 1,
				win.cw, 1);
	}
	oldx = curx, oldy = term.c.y;
}

void
xsetenv(void)
{
	char buf[sizeof(long) * 8 + 1];

	snprintf(buf, sizeof(buf), "%lu", xw.win);
	setenv("WINDOWID", buf, 1);
}

void
xsettitle(char *p)
{
	XTextProperty prop;

	Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
			&prop);
	XSetWMName(xw.dpy, xw.win, &prop);
	XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
	XFree(prop.value);
}

void
draw(void)
{
	drawregion(0, 0, term.col, term.row);
	XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
			win.h, 0, 0);
	XSetForeground(xw.dpy, dc.gc,
			dc.col[IS_SET(MODE_REVERSE)?
				defaultfg : defaultbg].pixel);
}

void
drawregion(int x1, int y1, int x2, int y2)
{
	int i, x, y, ox, numspecs;
	Glyph base, new;
	XftGlyphFontSpec *specs;
	int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);

	if (!(win.state & WIN_VISIBLE))
		return;

	for (y = y1; y < y2; y++) {
		if (!term.dirty[y])
			continue;

		term.dirty[y] = 0;

		specs = term.specbuf;
		numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y);

		i = ox = 0;
		for (x = x1; x < x2 && i < numspecs; x++) {
			new = term.line[y][x];
			if (new.mode == ATTR_WDUMMY)
				continue;
			if (ena_sel && selected(x, y))
				new.mode ^= ATTR_REVERSE;
			if (i > 0 && ATTRCMP(base, new)) {
				xdrawglyphfontspecs(specs, base, i, ox, y);
				specs += i;
				numspecs -= i;
				i = 0;
			}
			if (i == 0) {
				ox = x;
				base = new;
			}
			i++;
		}
		if (i > 0)
			xdrawglyphfontspecs(specs, base, i, ox, y);
	}
	xdrawcursor();
}

void
expose(XEvent *ev)
{
	redraw();
}

void
visibility(XEvent *ev)
{
	XVisibilityEvent *e = &ev->xvisibility;

	MODBIT(win.state, e->state != VisibilityFullyObscured, WIN_VISIBLE);
}

void
unmap(XEvent *ev)
{
	win.state &= ~WIN_VISIBLE;
}

void
xsetpointermotion(int set)
{
	MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
	XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
}

void
xseturgency(int add)
{
	XWMHints *h = XGetWMHints(xw.dpy, xw.win);

	MODBIT(h->flags, add, XUrgencyHint);
	XSetWMHints(xw.dpy, xw.win, h);
	XFree(h);
}

void
xbell(int vol)
{
	XkbBell(xw.dpy, xw.win, vol, (Atom)NULL);
}

unsigned long
xwinid(void)
{
	return xw.win;
}

void
focus(XEvent *ev)
{
	XFocusChangeEvent *e = &ev->xfocus;

	if (e->mode == NotifyGrab)
		return;

	if (ev->type == FocusIn) {
		XSetICFocus(xw.xic);
		win.state |= WIN_FOCUSED;
		xseturgency(0);
		if (IS_SET(MODE_FOCUS))
			ttywrite("\033[I", 3);
	} else {
		XUnsetICFocus(xw.xic);
		win.state &= ~WIN_FOCUSED;
		if (IS_SET(MODE_FOCUS))
			ttywrite("\033[O", 3);
	}
}

void
kpress(XEvent *ev)
{
	XKeyEvent *e = &ev->xkey;
	KeySym ksym;
	char buf[32], *customkey;
	int len;
	Rune c;
	Status status;
	Shortcut *bp;

	if (IS_SET(MODE_KBDLOCK))
		return;

	len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
	/* 1. shortcuts */
	for (bp = shortcuts; bp < shortcuts + shortcutslen; bp++) {
		if (ksym == bp->keysym && match(bp->mod, e->state)) {
			bp->func(&(bp->arg));
			return;
		}
	}

	/* 2. custom keys from config.h */
	if ((customkey = kmap(ksym, e->state))) {
		ttysend(customkey, strlen(customkey));
		return;
	}

	/* 3. composed string from input method */
	if (len == 0)
		return;
	if (len == 1 && e->state & Mod1Mask) {
		if (IS_SET(MODE_8BIT)) {
			if (*buf < 0177) {
				c = *buf | 0x80;
				len = utf8encode(c, buf);
			}
		} else {
			buf[1] = buf[0];
			buf[0] = '\033';
			len = 2;
		}
	}
	ttysend(buf, len);
}


void
cmessage(XEvent *e)
{
	/*
	 * See xembed specs
	 *  http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
	 */
	if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
		if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
			win.state |= WIN_FOCUSED;
			xseturgency(0);
		} else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
			win.state &= ~WIN_FOCUSED;
		}
	} else if (e->xclient.data.l[0] == xw.wmdeletewin) {
		/* Send SIGHUP to shell */
		kill(pid, SIGHUP);
		exit(0);
	}
}

void
resize(XEvent *e)
{
	if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
		return;

	cresize(e->xconfigure.width, e->xconfigure.height);
	ttyresize();
}

void
run(void)
{
	XEvent ev;
	int w = win.w, h = win.h;
	fd_set rfd;
	int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
	struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
	long deltatime;

	/* Waiting for window mapping */
	do {
		XNextEvent(xw.dpy, &ev);
		/*
		 * This XFilterEvent call is required because of XOpenIM. It
		 * does filter out the key event and some client message for
		 * the input method too.
		 */
		if (XFilterEvent(&ev, None))
			continue;
		if (ev.type == ConfigureNotify) {
			w = ev.xconfigure.width;
			h = ev.xconfigure.height;
		}
	} while (ev.type != MapNotify);

	cresize(w, h);
	ttynew();
	ttyresize();

	clock_gettime(CLOCK_MONOTONIC, &last);
	lastblink = last;

	for (xev = actionfps;;) {
		FD_ZERO(&rfd);
		FD_SET(cmdfd, &rfd);
		FD_SET(xfd, &rfd);

		if (pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
			if (errno == EINTR)
				continue;
			die("select failed: %s\n", strerror(errno));
		}
		if (FD_ISSET(cmdfd, &rfd)) {
			ttyread();
			if (blinktimeout) {
				blinkset = tattrset(ATTR_BLINK);
				if (!blinkset)
					MODBIT(term.mode, 0, MODE_BLINK);
			}
		}

		if (FD_ISSET(xfd, &rfd))
			xev = actionfps;

		clock_gettime(CLOCK_MONOTONIC, &now);
		drawtimeout.tv_sec = 0;
		drawtimeout.tv_nsec =  (1000 * 1E6)/ xfps;
		tv = &drawtimeout;

		dodraw = 0;
		if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
			tsetdirtattr(ATTR_BLINK);
			term.mode ^= MODE_BLINK;
			lastblink = now;
			dodraw = 1;
		}
		deltatime = TIMEDIFF(now, last);
		if (deltatime > 1000 / (xev ? xfps : actionfps)) {
			dodraw = 1;
			last = now;
		}

		if (dodraw) {
			while (XPending(xw.dpy)) {
				XNextEvent(xw.dpy, &ev);
				if (XFilterEvent(&ev, None))
					continue;
				if (handler[ev.type])
					(handler[ev.type])(&ev);
			}

			draw();
			XFlush(xw.dpy);

			if (xev && !FD_ISSET(xfd, &rfd))
				xev--;
			if (!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
				if (blinkset) {
					if (TIMEDIFF(now, lastblink) \
							> blinktimeout) {
						drawtimeout.tv_nsec = 1000;
					} else {
						drawtimeout.tv_nsec = (1E6 * \
							(blinktimeout - \
							TIMEDIFF(now,
								lastblink)));
					}
					drawtimeout.tv_sec = \
					    drawtimeout.tv_nsec / 1E9;
					drawtimeout.tv_nsec %= (long)1E9;
				} else {
					tv = NULL;
				}
			}
		}
	}
}

int
main(int argc, char *argv[])
{
	xw.l = xw.t = 0;
	xw.isfixed = False;
	win.cursor = cursorshape;

	ARGBEGIN {
	case 'a':
		allowaltscreen = 0;
		break;
	case 'c':
		opt_class = EARGF(usage());
		break;
	case 'e':
		if (argc > 0)
			--argc, ++argv;
		goto run;
	case 'f':
		opt_font = EARGF(usage());
		break;
	case 'g':
		xw.gm = XParseGeometry(EARGF(usage()),
				&xw.l, &xw.t, &cols, &rows);
		break;
	case 'i':
		xw.isfixed = 1;
		break;
	case 'o':
		opt_io = EARGF(usage());
		break;
	case 'l':
		opt_line = EARGF(usage());
		break;
	case 'n':
		opt_name = EARGF(usage());
		break;
	case 't':
	case 'T':
		opt_title = EARGF(usage());
		break;
	case 'w':
		opt_embed = EARGF(usage());
		break;
	case 'v':
		die("%s " VERSION " (c) 2010-2016 st engineers\n", argv0);
		break;
	default:
		usage();
	} ARGEND;

run:
	if (argc > 0) {
		/* eat all remaining arguments */
		opt_cmd = argv;
		if (!opt_title && !opt_line)
			opt_title = basename(xstrdup(argv[0]));
	}
	setlocale(LC_CTYPE, "");
	XSetLocaleModifiers("");
	tnew(MAX(cols, 1), MAX(rows, 1));
	xinit();
	selinit();
	run();

	return 0;
}