hallo

1 files changed, 2306 insertions, 0 deletions

diff --git a/x.c b/x.c
new file mode 100755
index 0000000..fed0aea
--- /dev/null
+++ b/x.c
@@ -0,0 +1,2306 @@
+/* See LICENSE for license details. */
+#include <errno.h>
+#include <math.h>
+#include <limits.h>
+#include <locale.h>
+#include <signal.h>
+#include <sys/select.h>
+#include <time.h>
+#include <unistd.h>
+#include <libgen.h>
+#include <X11/Xatom.h>
+#include <X11/Xlib.h>
+#include <X11/cursorfont.h>
+#include <X11/keysym.h>
+#include <X11/Xft/Xft.h>
+#include <X11/XKBlib.h>
+
+char *argv0;
+#include "arg.h"
+#include "st.h"
+#include "win.h"
+#include "hb.h"
+
+/* types used in config.h */
+typedef struct {
+	uint mod;
+	KeySym keysym;
+	void (*func)(const Arg *);
+	const Arg arg;
+} Shortcut;
+
+typedef struct {
+	uint mod;
+	uint button;
+	void (*func)(const Arg *);
+	const Arg arg;
+	uint  release;
+} MouseShortcut;
+
+typedef struct {
+	KeySym k;
+	uint mask;
+	char *s;
+	/* three-valued logic variables: 0 indifferent, 1 on, -1 off */
+	signed char appkey;    /* application keypad */
+	signed char appcursor; /* application cursor */
+} Key;
+
+/* X modifiers */
+#define XK_ANY_MOD    UINT_MAX
+#define XK_NO_MOD     0
+#define XK_SWITCH_MOD (1<<13|1<<14)
+
+/* 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 zoom(const Arg *);
+static void zoomabs(const Arg *);
+static void zoomreset(const Arg *);
+static void ttysend(const Arg *);
+
+/* config.h for applying patches and the configuration. */
+#include "config.h"
+
+/* size of title stack */
+#define TITLESTACKSIZE 8
+
+/* XEMBED messages */
+#define XEMBED_FOCUS_IN  4
+#define XEMBED_FOCUS_OUT 5
+
+/* macros */
+#define IS_SET(flag)		((win.mode & (flag)) != 0)
+#define TRUERED(x)		(((x) & 0xff0000) >> 8)
+#define TRUEGREEN(x)		(((x) & 0xff00))
+#define TRUEBLUE(x)		(((x) & 0xff) << 8)
+
+typedef XftDraw *Draw;
+typedef XftColor Color;
+typedef XftGlyphFontSpec GlyphFontSpec;
+
+/* Purely graphic info */
+typedef struct {
+	int tw, th; /* tty width and height */
+	int w, h; /* window width and height */
+	int hborderpx, vborderpx;
+	int ch; /* char height */
+	int cw; /* char width  */
+	int mode; /* window state/mode flags */
+	int cursor; /* cursor style */
+} TermWindow;
+
+typedef struct {
+	Display *dpy;
+	Colormap cmap;
+	Window win;
+	Drawable buf;
+	GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
+	Atom xembed, wmdeletewin, netwmname, netwmiconname, netwmpid;
+	struct {
+		XIM xim;
+		XIC xic;
+		XPoint spot;
+		XVaNestedList spotlist;
+	} ime;
+	Draw draw;
+	Visual *vis;
+	XSetWindowAttributes attrs;
+	int scr;
+	int isfixed; /* is fixed geometry? */
+	int depth; /* bit depth */
+	int l, t; /* left and top offset */
+	int gm; /* geometry mask */
+} XWindow;
+
+typedef struct {
+	Atom xtarget;
+	char *primary, *clipboard;
+	struct timespec tclick1;
+	struct timespec tclick2;
+} XSelection;
+
+/* Font structure */
+#define Font Font_
+typedef struct {
+	int height;
+	int width;
+	int ascent;
+	int descent;
+	int badslant;
+	int badweight;
+	short lbearing;
+	short rbearing;
+	XftFont *match;
+	FcFontSet *set;
+	FcPattern *pattern;
+} Font;
+
+/* Drawing Context */
+typedef struct {
+	Color *col;
+	size_t collen;
+	Font font, bfont, ifont, ibfont;
+	GC gc;
+} DC;
+
+static inline ushort sixd_to_16bit(int);
+static void xresetfontsettings(ushort mode, Font **font, int *frcflags);
+static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
+static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int, int);
+static void xdrawglyph(Glyph, int, int);
+static void xclear(int, int, int, int);
+static int xgeommasktogravity(int);
+static int ximopen(Display *);
+static void ximinstantiate(Display *, XPointer, XPointer);
+static void ximdestroy(XIM, XPointer, XPointer);
+static int xicdestroy(XIC, XPointer, XPointer);
+static void xinit(int, int);
+static void cresize(int, int);
+static void xresize(int, int);
+static void xhints(void);
+static int xloadcolor(int, const char *, Color *);
+static int xloadfont(Font *, FcPattern *);
+static void xloadfonts(const char *, double);
+static int xloadsparefont(FcPattern *, int);
+static void xloadsparefonts(void);
+static void xunloadfont(Font *);
+static void xunloadfonts(void);
+static void xsetenv(void);
+static void xseturgency(int);
+static int evcol(XEvent *);
+static int evrow(XEvent *);
+
+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 uint buttonmask(uint);
+static int mouseaction(XEvent *, uint);
+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 setsel(char *, Time);
+static void mousesel(XEvent *, int);
+static void mousereport(XEvent *);
+static char *kmap(KeySym, uint);
+static int match(uint, uint);
+
+static void run(void);
+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 XSelection xsel;
+static TermWindow win;
+static int tstki; /* title stack index */
+static char *titlestack[TITLESTACKSIZE]; /* title stack */
+
+/* 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 = NULL;
+static int frclen = 0;
+static int frccap = 0;
+static char *usedfont = NULL;
+static double usedfontsize = 0;
+static double defaultfontsize = 0;
+
+static char *opt_class = NULL;
+static char **opt_cmd  = 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 uint buttons; /* bit field of pressed buttons */
+
+void
+clipcopy(const Arg *dummy)
+{
+	Atom clipboard;
+
+	free(xsel.clipboard);
+	xsel.clipboard = NULL;
+
+	if (xsel.primary != NULL) {
+		xsel.clipboard = xstrdup(xsel.primary);
+		clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
+		XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
+	}
+}
+
+void
+clippaste(const Arg *dummy)
+{
+	Atom clipboard;
+
+	clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
+	XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard,
+			xw.win, CurrentTime);
+}
+
+void
+selpaste(const Arg *dummy)
+{
+	XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY,
+			xw.win, CurrentTime);
+}
+
+void
+numlock(const Arg *dummy)
+{
+	win.mode ^= MODE_NUMLOCK;
+}
+
+void
+zoom(const Arg *arg)
+{
+	Arg larg;
+
+	larg.f = usedfontsize + arg->f;
+	zoomabs(&larg);
+}
+
+void
+zoomabs(const Arg *arg)
+{
+	xunloadfonts();
+	xloadfonts(usedfont, arg->f);
+	xloadsparefonts();
+	cresize(0, 0);
+	redraw();
+	xhints();
+}
+
+void
+zoomreset(const Arg *arg)
+{
+	Arg larg;
+
+	if (defaultfontsize > 0) {
+		larg.f = defaultfontsize;
+		zoomabs(&larg);
+	}
+}
+
+void
+ttysend(const Arg *arg)
+{
+	ttywrite(arg->s, strlen(arg->s), 1);
+}
+
+int
+evcol(XEvent *e)
+{
+	int x = e->xbutton.x - win.hborderpx;
+	LIMIT(x, 0, win.tw - 1);
+	return x / win.cw;
+}
+
+int
+evrow(XEvent *e)
+{
+	int y = e->xbutton.y - win.vborderpx;
+	LIMIT(y, 0, win.th - 1);
+	return y / win.ch;
+}
+
+void
+mousesel(XEvent *e, int done)
+{
+	int type, seltype = SEL_REGULAR;
+	uint state = e->xbutton.state & ~(Button1Mask | forcemousemod);
+
+	for (type = 1; type < LEN(selmasks); ++type) {
+		if (match(selmasks[type], state)) {
+			seltype = type;
+			break;
+		}
+	}
+	selextend(evcol(e), evrow(e), seltype, done);
+	if (done)
+		setsel(getsel(), e->xbutton.time);
+}
+
+void
+mousereport(XEvent *e)
+{
+	int len, btn, code;
+	int x = evcol(e), y = evrow(e);
+	int state = e->xbutton.state;
+	char buf[40];
+	static int ox, oy;
+
+	if (e->type == MotionNotify) {
+		if (x == ox && y == oy)
+			return;
+		if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
+			return;
+		/* MODE_MOUSEMOTION: no reporting if no button is pressed */
+		if (IS_SET(MODE_MOUSEMOTION) && buttons == 0)
+			return;
+		/* Set btn to lowest-numbered pressed button, or 12 if no
+		 * buttons are pressed. */
+		for (btn = 1; btn <= 11 && !(buttons & (1<<(btn-1))); btn++)
+			;
+		code = 32;
+	} else {
+		btn = e->xbutton.button;
+		/* Only buttons 1 through 11 can be encoded */
+		if (btn < 1 || btn > 11)
+			return;
+		if (e->type == ButtonRelease) {
+			/* MODE_MOUSEX10: no button release reporting */
+			if (IS_SET(MODE_MOUSEX10))
+				return;
+			/* Don't send release events for the scroll wheel */
+			if (btn == 4 || btn == 5)
+				return;
+		}
+		code = 0;
+	}
+
+	ox = x;
+	oy = y;
+
+	/* Encode btn into code. If no button is pressed for a motion event in
+	 * MODE_MOUSEMANY, then encode it as a release. */
+	if ((!IS_SET(MODE_MOUSESGR) && e->type == ButtonRelease) || btn == 12)
+		code += 3;
+	else if (btn >= 8)
+		code += 128 + btn - 8;
+	else if (btn >= 4)
+		code += 64 + btn - 4;
+	else
+		code += btn - 1;
+
+	if (!IS_SET(MODE_MOUSEX10)) {
+		code += ((state & ShiftMask  ) ?  4 : 0)
+		      + ((state & Mod1Mask   ) ?  8 : 0) /* meta key: alt */
+		      + ((state & ControlMask) ? 16 : 0);
+	}
+
+	if (IS_SET(MODE_MOUSESGR)) {
+		len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
+				code, x+1, y+1,
+				e->type == ButtonRelease ? 'm' : 'M');
+	} else if (x < 223 && y < 223) {
+		len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
+				32+code, 32+x+1, 32+y+1);
+	} else {
+		return;
+	}
+
+	ttywrite(buf, len, 0);
+}
+
+uint
+buttonmask(uint button)
+{
+	return button == Button1 ? Button1Mask
+	     : button == Button2 ? Button2Mask
+	     : button == Button3 ? Button3Mask
+	     : button == Button4 ? Button4Mask
+	     : button == Button5 ? Button5Mask
+	     : 0;
+}
+
+int
+mouseaction(XEvent *e, uint release)
+{
+	MouseShortcut *ms;
+
+	/* ignore Button<N>mask for Button<N> - it's set on release */
+	uint state = e->xbutton.state & ~buttonmask(e->xbutton.button);
+
+	for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
+		if (ms->release == release &&
+		    ms->button == e->xbutton.button &&
+		    (match(ms->mod, state) ||  /* exact or forced */
+		     match(ms->mod, state & ~forcemousemod))) {
+			ms->func(&(ms->arg));
+			return 1;
+		}
+	}
+
+	return 0;
+}
+
+void
+bpress(XEvent *e)
+{
+	int btn = e->xbutton.button;
+	struct timespec now;
+	int snap;
+
+	if (1 <= btn && btn <= 11)
+		buttons |= 1 << (btn-1);
+
+	if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
+		mousereport(e);
+		return;
+	}
+
+	if (mouseaction(e, 0))
+		return;
+
+	if (btn == Button1) {
+		/*
+		 * If the user clicks below predefined timeouts specific
+		 * snapping behaviour is exposed.
+		 */
+		clock_gettime(CLOCK_MONOTONIC, &now);
+		if (TIMEDIFF(now, xsel.tclick2) <= tripleclicktimeout) {
+			snap = SNAP_LINE;
+		} else if (TIMEDIFF(now, xsel.tclick1) <= doubleclicktimeout) {
+			snap = SNAP_WORD;
+		} else {
+			snap = 0;
+		}
+		xsel.tclick2 = xsel.tclick1;
+		xsel.tclick1 = now;
+
+		selstart(evcol(e), evrow(e), snap);
+	}
+}
+
+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 = None;
+
+	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;
+
+	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, 0);
+		ttywrite((char *)data, nitems * format / 8, 1);
+		if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
+			ttywrite("\033[201~", 6, 0);
+		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
+xclipcopy(void)
+{
+	clipcopy(NULL);
+}
+
+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 = xsel.primary;
+		} else if (xsre->selection == clipboard) {
+			seltext = xsel.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
+setsel(char *str, Time t)
+{
+	if (!str)
+		return;
+
+	free(xsel.primary);
+	xsel.primary = str;
+
+	XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
+	if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
+		selclear();
+}
+
+void
+xsetsel(char *str)
+{
+	setsel(str, CurrentTime);
+}
+
+void
+brelease(XEvent *e)
+{
+	int btn = e->xbutton.button;
+
+	if (1 <= btn && btn <= 11)
+		buttons &= ~(1 << (btn-1));
+
+	if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
+		mousereport(e);
+		return;
+	}
+
+	if (mouseaction(e, 1))
+		return;
+	if (btn == Button1)
+		mousesel(e, 1);
+}
+
+void
+bmotion(XEvent *e)
+{
+	if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
+		mousereport(e);
+		return;
+	}
+
+	mousesel(e, 0);
+}
+
+void
+cresize(int width, int height)
+{
+	int col, row;
+
+	if (width != 0)
+		win.w = width;
+	if (height != 0)
+		win.h = height;
+
+	col = (win.w - 2 * borderpx) / win.cw;
+	row = (win.h - 2 * borderpx) / win.ch;
+	col = MAX(1, col);
+	row = MAX(1, row);
+
+	win.hborderpx = (win.w - col * win.cw) / 2;
+	win.vborderpx = (win.h - row * win.ch) / 2;
+
+	tresize(col, row);
+	xresize(col, row);
+	ttyresize(win.tw, win.th);
+}
+
+void
+xresize(int col, int row)
+{
+	win.tw = col * win.cw;
+	win.th = row * win.ch;
+
+	XFreePixmap(xw.dpy, xw.buf);
+	xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
+			xw.depth);
+	XftDrawChange(xw.draw, xw.buf);
+	xclear(0, 0, win.w, win.h);
+
+	/* resize to new width */
+	xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec) * 4);
+}
+
+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;
+
+	if (loaded) {
+		for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
+			XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
+	} else {
+		dc.collen = MAX(LEN(colorname), 256);
+		dc.col = xmalloc(dc.collen * sizeof(Color));
+	}
+
+	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);
+		}
+
+	dc.col[defaultbg].color.alpha = (unsigned short)(0xffff * alpha);
+	dc.col[defaultbg].pixel &= 0x00FFFFFF;
+	dc.col[defaultbg].pixel |= (unsigned char)(0xff * alpha) << 24;
+	loaded = 1;
+}
+
+int
+xgetcolor(int x, unsigned char *r, unsigned char *g, unsigned char *b)
+{
+	if (!BETWEEN(x, 0, dc.collen - 1))
+		return 1;
+
+	*r = dc.col[x].color.red >> 8;
+	*g = dc.col[x].color.green >> 8;
+	*b = dc.col[x].color.blue >> 8;
+
+	return 0;
+}
+
+int
+xsetcolorname(int x, const char *name)
+{
+	Color ncolor;
+
+	if (!BETWEEN(x, 0, dc.collen - 1))
+		return 1;
+
+	if (!xloadcolor(x, name, &ncolor))
+		return 1;
+
+	XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
+	dc.col[x] = ncolor;
+
+	if (x == defaultbg) {
+		dc.col[defaultbg].color.alpha = (unsigned short)(0xffff * alpha);
+		dc.col[defaultbg].pixel &= 0x00FFFFFF;
+		dc.col[defaultbg].pixel |= (unsigned char)(0xff * alpha) << 24;
+	}
+
+	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;
+
+	sizeh = XAllocSizeHints();
+
+	sizeh->flags = PSize | PResizeInc | PBaseSize | PMinSize;
+	sizeh->height = win.h;
+	sizeh->width = win.w;
+	sizeh->height_inc = 1;
+	sizeh->width_inc = 1;
+	sizeh->base_height = 2 * borderpx;
+	sizeh->base_width = 2 * borderpx;
+	sizeh->min_height = win.ch + 2 * borderpx;
+	sizeh->min_width = win.cw + 2 * borderpx;
+	if (xw.isfixed) {
+		sizeh->flags |= PMaxSize;
+		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("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("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(const char *fontstr, double fontsize)
+{
+	FcPattern *pattern;
+	double fontval;
+
+	if (fontstr[0] == '-')
+		pattern = XftXlfdParse(fontstr, False, False);
+	else
+		pattern = FcNameParse((const FcChar8 *)fontstr);
+
+	if (!pattern)
+		die("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("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("can't open font %s\n", fontstr);
+
+	FcPatternDel(pattern, FC_WEIGHT);
+	FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
+	if (xloadfont(&dc.ibfont, pattern))
+		die("can't open font %s\n", fontstr);
+
+	FcPatternDel(pattern, FC_SLANT);
+	FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
+	if (xloadfont(&dc.bfont, pattern))
+		die("can't open font %s\n", fontstr);
+
+	FcPatternDestroy(pattern);
+}
+
+int
+xloadsparefont(FcPattern *pattern, int flags)
+{
+	FcPattern *match;
+	FcResult result;
+
+	match = FcFontMatch(NULL, pattern, &result);
+	if (!match) {
+		return 1;
+	}
+
+	if (!(frc[frclen].font = XftFontOpenPattern(xw.dpy, match))) {
+		FcPatternDestroy(match);
+		return 1;
+	}
+
+	frc[frclen].flags = flags;
+	/* Believe U+0000 glyph will present in each default font */
+	frc[frclen].unicodep = 0;
+	frclen++;
+
+	return 0;
+}
+
+void
+xloadsparefonts(void)
+{
+	FcPattern *pattern;
+	double sizeshift, fontval;
+	int fc;
+	char **fp;
+
+	if (frclen != 0)
+		die("can't embed spare fonts. cache isn't empty");
+
+	/* Calculate count of spare fonts */
+	fc = sizeof(font2) / sizeof(*font2);
+	if (fc == 0)
+		return;
+
+	/* Allocate memory for cache entries. */
+	if (frccap < 4 * fc) {
+		frccap += 4 * fc - frccap;
+		frc = xrealloc(frc, frccap * sizeof(Fontcache));
+	}
+
+	for (fp = font2; fp - font2 < fc; ++fp) {
+
+		if (**fp == '-')
+			pattern = XftXlfdParse(*fp, False, False);
+		else
+			pattern = FcNameParse((FcChar8 *)*fp);
+
+		if (!pattern)
+			die("can't open spare font %s\n", *fp);
+
+		if (defaultfontsize > 0) {
+			sizeshift = usedfontsize - defaultfontsize;
+			if (sizeshift != 0 &&
+					FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
+					FcResultMatch) {
+				fontval += sizeshift;
+				FcPatternDel(pattern, FC_PIXEL_SIZE);
+				FcPatternDel(pattern, FC_SIZE);
+				FcPatternAddDouble(pattern, FC_PIXEL_SIZE, fontval);
+			}
+		}
+
+		FcPatternAddBool(pattern, FC_SCALABLE, 1);
+
+		FcConfigSubstitute(NULL, pattern, FcMatchPattern);
+		XftDefaultSubstitute(xw.dpy, xw.scr, pattern);
+
+		if (xloadsparefont(pattern, FRC_NORMAL))
+			die("can't open spare font %s\n", *fp);
+
+		FcPatternDel(pattern, FC_SLANT);
+		FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
+		if (xloadsparefont(pattern, FRC_ITALIC))
+			die("can't open spare font %s\n", *fp);
+
+		FcPatternDel(pattern, FC_WEIGHT);
+		FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
+		if (xloadsparefont(pattern, FRC_ITALICBOLD))
+			die("can't open spare font %s\n", *fp);
+
+		FcPatternDel(pattern, FC_SLANT);
+		FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
+		if (xloadsparefont(pattern, FRC_BOLD))
+			die("can't open spare font %s\n", *fp);
+
+		FcPatternDestroy(pattern);
+	}
+}
+
+void
+xunloadfont(Font *f)
+{
+	XftFontClose(xw.dpy, f->match);
+	FcPatternDestroy(f->pattern);
+	if (f->set)
+		FcFontSetDestroy(f->set);
+}
+
+void
+xunloadfonts(void)
+{
+	/* Clear Harfbuzz font cache. */
+	hbunloadfonts();
+
+	/* 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);
+}
+
+int
+ximopen(Display *dpy)
+{
+	XIMCallback imdestroy = { .client_data = NULL, .callback = ximdestroy };
+	XICCallback icdestroy = { .client_data = NULL, .callback = xicdestroy };
+
+	xw.ime.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
+	if (xw.ime.xim == NULL)
+		return 0;
+
+	if (XSetIMValues(xw.ime.xim, XNDestroyCallback, &imdestroy, NULL))
+		fprintf(stderr, "XSetIMValues: "
+		                "Could not set XNDestroyCallback.\n");
+
+	xw.ime.spotlist = XVaCreateNestedList(0, XNSpotLocation, &xw.ime.spot,
+	                                      NULL);
+
+	if (xw.ime.xic == NULL) {
+		xw.ime.xic = XCreateIC(xw.ime.xim, XNInputStyle,
+		                       XIMPreeditNothing | XIMStatusNothing,
+		                       XNClientWindow, xw.win,
+		                       XNDestroyCallback, &icdestroy,
+		                       NULL);
+	}
+	if (xw.ime.xic == NULL)
+		fprintf(stderr, "XCreateIC: Could not create input context.\n");
+
+	return 1;
+}
+
+void
+ximinstantiate(Display *dpy, XPointer client, XPointer call)
+{
+	if (ximopen(dpy))
+		XUnregisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
+		                                 ximinstantiate, NULL);
+}
+
+void
+ximdestroy(XIM xim, XPointer client, XPointer call)
+{
+	xw.ime.xim = NULL;
+	XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
+	                               ximinstantiate, NULL);
+	XFree(xw.ime.spotlist);
+}
+
+int
+xicdestroy(XIC xim, XPointer client, XPointer call)
+{
+	xw.ime.xic = NULL;
+	return 1;
+}
+
+void
+xinit(int cols, int rows)
+{
+	XGCValues gcvalues;
+	Cursor cursor;
+	Window parent, root;
+	pid_t thispid = getpid();
+	XColor xmousefg, xmousebg;
+	XWindowAttributes attr;
+	XVisualInfo vis;
+
+	if (!(xw.dpy = XOpenDisplay(NULL)))
+		die("can't open display\n");
+	xw.scr = XDefaultScreen(xw.dpy);
+
+	root = XRootWindow(xw.dpy, xw.scr);
+	if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
+		parent = root;