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dmenu.c
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dmenu.c
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/* See LICENSE file for copyright and license details. */
#include <ctype.h>
#include <locale.h>
#include <stdbool.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <time.h>
#include <unistd.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <X11/Xutil.h>
#ifdef XINERAMA
#include <X11/extensions/Xinerama.h>
#endif
#include <X11/Xft/Xft.h>
#include "drw.h"
#include "util.h"
/* macros */
#define INTERSECT(x,y,w,h,r) (MAX(0, MIN((x)+(w),(r).x_org+(r).width) - MAX((x),(r).x_org)) \
&& MAX(0, MIN((y)+(h),(r).y_org+(r).height) - MAX((y),(r).y_org)))
#define LENGTH(X) (sizeof X / sizeof X[0])
#define TEXTW(X) (drw_fontset_getwidth(drw, (X)) + lrpad)
/* define opaqueness */
#define OPAQUE 0xFFU
/* enums */
enum { SchemeNorm, SchemeSel, SchemeNormHighlight, SchemeSelHighlight, SchemeOutHighlight,
SchemeOut, SchemeLast }; /* color schemes */
struct item {
char *text;
struct item *left, *right;
int out;
double distance;
int id; /* for multiselect */
};
static char text[BUFSIZ] = "";
static char *embed;
static int bh, mw, mh;
static int inputw = 0, promptw;
static int lrpad; /* sum of left and right padding */
static size_t cursor;
static struct item *items = NULL;
static struct item *matches, *matchend;
static struct item *prev, *curr, *next, *sel;
static int mon = -1, screen;
static bool sortmatches = true;
static int *selid = NULL;
static unsigned int selidsize = 0;
static Atom clip, utf8;
static Display *dpy;
static Window root, parentwin, win;
static XIC xic;
static Drw *drw;
static int usergb = 0;
static Visual *visual;
static int depth;
static Colormap cmap;
static Clr *scheme[SchemeLast];
#include "config.h"
static char * cistrstr(const char *s, const char *sub);
static int (*fstrncmp)(const char *, const char *, size_t) = strncasecmp;
static char *(*fstrstr)(const char *, const char *) = cistrstr;
static int
issel(size_t id)
{
for (int i = 0;i < selidsize;i++)
if (selid[i] == id)
return 1;
return 0;
}
static void
xinitvisual()
{
XVisualInfo *infos;
XRenderPictFormat *fmt;
int nitems;
int i;
XVisualInfo tpl = {
.screen = screen,
.depth = 32,
.class = TrueColor
};
long masks = VisualScreenMask | VisualDepthMask | VisualClassMask;
infos = XGetVisualInfo(dpy, masks, &tpl, &nitems);
visual = NULL;
for (i = 0; i < nitems; i++){
fmt = XRenderFindVisualFormat(dpy, infos[i].visual);
if (fmt->type == PictTypeDirect && fmt->direct.alphaMask) {
visual = infos[i].visual;
depth = infos[i].depth;
cmap = XCreateColormap(dpy, root, visual, AllocNone);
usergb = 1;
break;
}
}
XFree(infos);
if (! visual) {
visual = DefaultVisual(dpy, screen);
depth = DefaultDepth(dpy, screen);
cmap = DefaultColormap(dpy, screen);
}
}
static void
appenditem(struct item *item, struct item **list, struct item **last)
{
if (*last)
(*last)->right = item;
else
*list = item;
item->left = *last;
item->right = NULL;
*last = item;
}
static void
calcoffsets(void)
{
int i, n;
if (lines > 0)
n = lines * bh;
else
n = mw - (promptw + inputw + TEXTW("<") + TEXTW(">"));
/* calculate which items will begin the next page and previous page */
for (i = 0, next = curr; next; next = next->right)
if ((i += (lines > 0) ? bh : MIN(TEXTW(next->text), n)) > n)
break;
for (i = 0, prev = curr; prev && prev->left; prev = prev->left)
if ((i += (lines > 0) ? bh : MIN(TEXTW(prev->left->text), n)) > n)
break;
}
static void
cleanup(void)
{
size_t i;
XUngrabKey(dpy, AnyKey, AnyModifier, root);
for (i = 0; i < SchemeLast; i++)
free(scheme[i]);
drw_free(drw);
XSync(dpy, False);
XCloseDisplay(dpy);
free(selid);
}
static char *
cistrstr(const char *s, const char *sub)
{
size_t len;
for (len = strlen(sub); *s; s++)
if (!strncasecmp(s, sub, len))
return (char *)s;
return NULL;
}
static void
drawhighlights(struct item *item, int x, int y, int maxw)
{
int i, indent;
char *highlight;
char c;
if (!(strlen(item->text) && strlen(text)))
return;
if (item == sel)
drw_setscheme(drw, scheme[SchemeSelHighlight]);
else if (issel(item->id))
drw_setscheme(drw, scheme[SchemeOutHighlight]);
else
drw_setscheme(drw, scheme[SchemeNormHighlight]);
for (i = 0, highlight = item->text; *highlight && text[i];) {
if (*highlight == text[i]) {
/* get indentation */
c = *highlight;
*highlight = '\0';
indent = TEXTW(item->text);
*highlight = c;
/* highlight character */
c = highlight[1];
highlight[1] = '\0';
drw_text(
drw,
x + indent - (lrpad / 2),
y,
MIN(maxw - indent, TEXTW(highlight) - lrpad),
bh, 0, highlight, 0
);
highlight[1] = c;
i++;
}
highlight++;
}
}
static int
drawitem(struct item *item, int x, int y, int w)
{
int r;
if (item == sel)
drw_setscheme(drw, scheme[SchemeSel]);
else if (issel(item->id))
drw_setscheme(drw, scheme[SchemeOut]);
else
drw_setscheme(drw, scheme[SchemeNorm]);
r = drw_text(drw, x, y, w, bh, lrpad / 2, item->text, 0);
drawhighlights(item, x, y, w);
return r;
}
static void
drawmenu(void)
{
unsigned int curpos;
struct item *item;
int x = 0, y = 0, fh = drw->fonts->h, w;
drw_setscheme(drw, scheme[SchemeNorm]);
drw_rect(drw, 0, 0, mw, mh, 1, 1);
if (prompt && *prompt) {
drw_setscheme(drw, scheme[SchemeSel]);
x = drw_text(drw, x, 0, promptw, bh, lrpad / 2, prompt, 0);
}
/* draw input field */
w = (lines > 0 || !matches) ? mw - x : inputw;
drw_setscheme(drw, scheme[SchemeNorm]);
drw_text(drw, x, 0, w, bh, lrpad / 2, text, 0);
curpos = TEXTW(text) - TEXTW(&text[cursor]);
if ((curpos += lrpad / 2 - 1) < w) {
drw_setscheme(drw, scheme[SchemeNorm]);
drw_rect(drw, x + curpos, 2 + (bh - fh) / 2, 2, fh - 4, 1, 0);
}
if (lines > 0) {
/* draw vertical list */
for (item = curr; item != next; item = item->right)
drawitem(item, x, y += bh, mw - x);
} else if (matches) {
/* draw horizontal list */
x += inputw;
w = TEXTW("<");
if (curr->left) {
drw_setscheme(drw, scheme[SchemeNorm]);
drw_text(drw, x, 0, w, bh, lrpad / 2, "<", 0);
}
x += w;
for (item = curr; item != next; item = item->right)
x = drawitem(item, x, 0, MIN(TEXTW(item->text), mw - x - TEXTW(">")));
if (next) {
w = TEXTW(">");
drw_setscheme(drw, scheme[SchemeNorm]);
drw_text(drw, mw - w, 0, w, bh, lrpad / 2, ">", 0);
}
}
drw_map(drw, win, 0, 0, mw, mh);
}
static void
grabfocus(void)
{
struct timespec ts = { .tv_sec = 0, .tv_nsec = 10000000 };
Window focuswin;
int i, revertwin;
for (i = 0; i < 100; ++i) {
XGetInputFocus(dpy, &focuswin, &revertwin);
if (focuswin == win)
return;
XSetInputFocus(dpy, win, RevertToParent, CurrentTime);
nanosleep(&ts, NULL);
}
die("cannot grab focus");
}
static void
grabkeyboard(void)
{
struct timespec ts = { .tv_sec = 0, .tv_nsec = 1000000 };
int i;
if (embed)
return;
/* try to grab keyboard, we may have to wait for another process to ungrab */
for (i = 0; i < 1000; i++) {
if (XGrabKeyboard(dpy, DefaultRootWindow(dpy), True, GrabModeAsync,
GrabModeAsync, CurrentTime) == GrabSuccess)
return;
nanosleep(&ts, NULL);
}
die("cannot grab keyboard");
}
int
compare_distance(const void *a, const void *b)
{
struct item *da = *(struct item **) a;
struct item *db = *(struct item **) b;
if (!db)
return 1;
if (!da)
return -1;
return da->distance == db->distance ? 0 : da->distance < db->distance ? -1 : 1;
}
void
fuzzymatch(void)
{
/* bang - we have so much memory */
struct item *it;
struct item **fuzzymatches = NULL;
char c;
int number_of_matches = 0, i, pidx, sidx, eidx;
int text_len = strlen(text), itext_len;
matches = matchend = NULL;
/* walk through all items */
for (it = items; it && it->text; it++) {
if (text_len) {
itext_len = strlen(it->text);
pidx = 0; /* pointer */
sidx = eidx = -1; /* start of match, end of match */
/* walk through item text */
for (i = 0; i < itext_len && (c = it->text[i]); i++) {
/* fuzzy match pattern */
if (!fstrncmp(&text[pidx], &c, 1)) {
if(sidx == -1)
sidx = i;
pidx++;
if (pidx == text_len) {
eidx = i;
break;
}
}
}
/* build list of matches */
if (eidx != -1) {
/* compute distance */
/* add penalty if match starts late (log(sidx+2))
* add penalty for long a match without many matching characters */
it->distance = log(sidx + 2) + (double)(eidx - sidx - text_len);
/* fprintf(stderr, "distance %s %f\n", it->text, it->distance); */
appenditem(it, &matches, &matchend);
number_of_matches++;
}
} else {
appenditem(it, &matches, &matchend);
}
}
if (number_of_matches) {
/* initialize array with matches */
if (!(fuzzymatches = realloc(fuzzymatches, number_of_matches * sizeof(struct item*))))
die("cannot realloc %u bytes:", number_of_matches * sizeof(struct item*));
for (i = 0, it = matches; it && i < number_of_matches; i++, it = it->right) {
fuzzymatches[i] = it;
}
/* sort matches according to distance */
qsort(fuzzymatches, number_of_matches, sizeof(struct item*), compare_distance);
/* rebuild list of matches */
matches = matchend = NULL;
for (i = 0, it = fuzzymatches[i]; i < number_of_matches && it && \
it->text; i++, it = fuzzymatches[i]) {
appenditem(it, &matches, &matchend);
}
free(fuzzymatches);
}
curr = sel = matches;
calcoffsets();
}
static void
match(void)
{
if (fuzzy) {
fuzzymatch();
return;
}
static char **tokv = NULL;
static int tokn = 0;
char buf[sizeof text], *s;
int i, tokc = 0;
size_t len, textsize;
struct item *item, *lprefix, *lsubstr, *prefixend, *substrend;
strcpy(buf, text);
/* separate input text into tokens to be matched individually */
for (s = strtok(buf, " "); s; tokv[tokc - 1] = s, s = strtok(NULL, " "))
if (++tokc > tokn && !(tokv = realloc(tokv, ++tokn * sizeof *tokv)))
die("cannot realloc %u bytes:", tokn * sizeof *tokv);
len = tokc ? strlen(tokv[0]) : 0;
matches = lprefix = lsubstr = matchend = prefixend = substrend = NULL;
textsize = strlen(text) + 1;
for (item = items; item && item->text; item++) {
for (i = 0; i < tokc; i++)
if (!fstrstr(item->text, tokv[i]))
break;
if (i != tokc) /* not all tokens match */
continue;
if (!sortmatches)
appenditem(item, &matches, &matchend);
else {
/* exact matches go first, then prefixes, then substrings */
if (!tokc || !fstrncmp(text, item->text, textsize))
appenditem(item, &matches, &matchend);
else if (!fstrncmp(tokv[0], item->text, len))
appenditem(item, &lprefix, &prefixend);
else
appenditem(item, &lsubstr, &substrend);
}
}
if (lprefix) {
if (matches) {
matchend->right = lprefix;
lprefix->left = matchend;
} else
matches = lprefix;
matchend = prefixend;
}
if (lsubstr) {
if (matches) {
matchend->right = lsubstr;
lsubstr->left = matchend;
} else
matches = lsubstr;
matchend = substrend;
}
curr = sel = matches;
calcoffsets();
}
static void
insert(const char *str, ssize_t n)
{
if (strlen(text) + n > sizeof text - 1)
return;
/* move existing text out of the way, insert new text, and update cursor */
memmove(&text[cursor + n], &text[cursor], sizeof text - cursor - MAX(n, 0));
if (n > 0)
memcpy(&text[cursor], str, n);
cursor += n;
match();
}
static size_t
nextrune(int inc)
{
ssize_t n;
/* return location of next utf8 rune in the given direction (+1 or -1) */
for (n = cursor + inc; n + inc >= 0 && (text[n] & 0xc0) == 0x80; n += inc)
;
return n;
}
static void
movewordedge(int dir)
{
if (dir < 0) { /* move cursor to the start of the word*/
while (cursor > 0 && strchr(worddelimiters, text[nextrune(-1)]))
cursor = nextrune(-1);
while (cursor > 0 && !strchr(worddelimiters, text[nextrune(-1)]))
cursor = nextrune(-1);
} else { /* move cursor to the end of the word */
while (text[cursor] && strchr(worddelimiters, text[cursor]))
cursor = nextrune(+1);
while (text[cursor] && !strchr(worddelimiters, text[cursor]))
cursor = nextrune(+1);
}
}
static void
keypress(XKeyEvent *ev)
{
char buf[32];
int len;
KeySym ksym;
Status status;
len = XmbLookupString(xic, ev, buf, sizeof buf, &ksym, &status);
switch (status) {
default: /* XLookupNone, XBufferOverflow */
return;
case XLookupChars:
goto insert;
case XLookupKeySym:
case XLookupBoth:
break;
}
if (ev->state & ControlMask) {
switch(ksym) {
case XK_a: ksym = XK_Home; break;
case XK_b: ksym = XK_Left; break;
case XK_c: ksym = XK_Escape; break;
case XK_d: ksym = XK_Delete; break;
case XK_e: ksym = XK_End; break;
case XK_f: ksym = XK_Right; break;
case XK_g: ksym = XK_Escape; break;
case XK_h: ksym = XK_BackSpace; break;
case XK_i: ksym = XK_Tab; break;
case XK_j: /* fallthrough */
case XK_J: /* fallthrough */
case XK_m: /* fallthrough */
case XK_M: ksym = XK_Return; ev->state &= ~ControlMask; break;
case XK_n: ksym = XK_Down; break;
case XK_p: ksym = XK_Up; break;
case XK_k: /* delete right */
text[cursor] = '\0';
match();
break;
case XK_u: /* delete left */
insert(NULL, 0 - cursor);
break;
case XK_w: /* delete word */
while (cursor > 0 && strchr(worddelimiters, text[nextrune(-1)]))
insert(NULL, nextrune(-1) - cursor);
while (cursor > 0 && !strchr(worddelimiters, text[nextrune(-1)]))
insert(NULL, nextrune(-1) - cursor);
break;
case XK_y: /* paste selection */
case XK_Y:
XConvertSelection(dpy, (ev->state & ShiftMask) ? clip : XA_PRIMARY,
utf8, utf8, win, CurrentTime);
return;
case XK_Left:
case XK_KP_Left:
movewordedge(-1);
goto draw;
case XK_Right:
case XK_KP_Right:
movewordedge(+1);
goto draw;
case XK_Return:
case XK_KP_Enter:
if (restrict_return) {
if (!sel || ev->state & (ShiftMask | ControlMask))
break;
puts(sel->text);
cleanup();
exit(0);
}
else {
if (sel && issel(sel->id)) {
for (int i = 0;i < selidsize;i++)
if (selid[i] == sel->id)
selid[i] = -1;
} else {
for (int i = 0;i < selidsize;i++)
if (selid[i] == -1) {
selid[i] = sel->id;
return;
}
selidsize++;
selid = realloc(selid, (selidsize + 1) * sizeof(int));
selid[selidsize - 1] = sel->id;
}
}
break;
case XK_bracketleft:
cleanup();
exit(1);
default:
return;
}
} else if (ev->state & Mod1Mask) {
switch(ksym) {
case XK_b:
movewordedge(-1);
goto draw;
case XK_f:
movewordedge(+1);
goto draw;
case XK_g: ksym = XK_Home; break;
case XK_G: ksym = XK_End; break;
case XK_h: ksym = XK_Up; break;
case XK_j: ksym = XK_Next; break;
case XK_k: ksym = XK_Prior; break;
case XK_l: ksym = XK_Down; break;
default:
return;
}
}
switch(ksym) {
default:
insert:
if (!iscntrl(*buf))
insert(buf, len);
break;
case XK_Delete:
case XK_KP_Delete:
if (text[cursor] == '\0')
return;
cursor = nextrune(+1);
/* fallthrough */
case XK_BackSpace:
if (cursor == 0)
return;
insert(NULL, nextrune(-1) - cursor);
break;
case XK_End:
case XK_KP_End:
if (text[cursor] != '\0') {
cursor = strlen(text);
break;
}
if (next) {
/* jump to end of list and position items in reverse */
curr = matchend;
calcoffsets();
curr = prev;
calcoffsets();
while (next && (curr = curr->right))
calcoffsets();
}
sel = matchend;
break;
case XK_Escape:
cleanup();
exit(1);
case XK_Home:
case XK_KP_Home:
if (sel == matches) {
cursor = 0;
break;
}
sel = curr = matches;
calcoffsets();
break;
case XK_Left:
case XK_KP_Left:
if (cursor > 0 && (!sel || !sel->left || lines > 0)) {
cursor = nextrune(-1);
break;
}
if (lines > 0)
return;
/* fallthrough */
case XK_Up:
case XK_KP_Up:
if (sel && sel->left && (sel = sel->left)->right == curr) {
curr = prev;
calcoffsets();
}
break;
case XK_Next:
case XK_KP_Next:
if (!next)
return;
sel = curr = next;
calcoffsets();
break;
case XK_Prior:
case XK_KP_Prior:
if (!prev)
return;
sel = curr = prev;
calcoffsets();
break;
case XK_Return:
case XK_KP_Enter:
if (!(ev->state & ControlMask)) {
for (int i = 0;i < selidsize;i++)
if (selid[i] != -1 && (!sel || sel->id != selid[i]))
puts(items[selid[i]].text);
if (sel && !(ev->state & ShiftMask))
puts(sel->text);
else
puts(text);
cleanup();
exit(0);
}
break;
case XK_Right:
case XK_KP_Right:
if (text[cursor] != '\0') {
cursor = nextrune(+1);
break;
}
if (lines > 0)
return;
/* fallthrough */
case XK_Down:
case XK_KP_Down:
if (sel && sel->right && (sel = sel->right) == next) {
curr = next;
calcoffsets();
}
break;
case XK_Tab:
if (!sel)
return;
strncpy(text, sel->text, sizeof text - 1);
text[sizeof text - 1] = '\0';
cursor = strlen(text);
match();
break;
}
draw:
drawmenu();
}
static void
buttonpress(XEvent *e)
{
struct item *item;
XButtonPressedEvent *ev = &e->xbutton;
int x = 0, y = 0, h = bh, w;
if (ev->window != win)
return;
/* right-click: exit */
if (ev->button == Button3)
exit(1);
if (prompt && *prompt)
x += promptw;
/* input field */
w = (lines > 0 || !matches) ? mw - x : inputw;
/* left-click on input: clear input,
* NOTE: if there is no left-arrow the space for < is reserved so
* add that to the input width */
if (ev->button == Button1 &&
((lines <= 0 && ev->x >= 0 && ev->x <= x + w +
((!prev || !curr->left) ? TEXTW("<") : 0)) ||
(lines > 0 && ev->y >= y && ev->y <= y + h))) {
insert(NULL, -cursor);
drawmenu();
return;
}
/* middle-mouse click: paste selection */
if (ev->button == Button2) {
XConvertSelection(dpy, (ev->state & ShiftMask) ? clip : XA_PRIMARY,
utf8, utf8, win, CurrentTime);
drawmenu();
return;
}
/* scroll up */
if (ev->button == Button4 && prev) {
sel = curr = prev;
calcoffsets();
drawmenu();
return;
}
/* scroll down */
if (ev->button == Button5 && next) {
sel = curr = next;
calcoffsets();
drawmenu();
return;
}
if (ev->button != Button1)
return;
if (ev->state & ~ControlMask)
return;
if (lines > 0) {
/* vertical list: (ctrl)left-click on item */
w = mw - x;
for (item = curr; item != next; item = item->right) {
y += h;
if (ev->y >= y && ev->y <= (y + h)) {
puts(item->text);
if (!(ev->state & ControlMask))
exit(0);
sel = item;
if (sel) {
sel->out = 1;
drawmenu();
}
return;
}
}
} else if (matches) {
/* left-click on left arrow */
x += inputw;
w = TEXTW("<");
if (prev && curr->left) {
if (ev->x >= x && ev->x <= x + w) {
sel = curr = prev;
calcoffsets();
drawmenu();
return;
}
}
/* horizontal list: (ctrl)left-click on item */
for (item = curr; item != next; item = item->right) {
x += w;
w = MIN(TEXTW(item->text), mw - x - TEXTW(">"));
if (ev->x >= x && ev->x <= x + w) {
puts(item->text);
if (!(ev->state & ControlMask))
exit(0);
sel = item;
if (sel) {
sel->out = 1;
drawmenu();
}
return;
}
}
/* left-click on right arrow */
w = TEXTW(">");
x = mw - w;
if (next && ev->x >= x && ev->x <= x + w) {
sel = curr = next;
calcoffsets();
drawmenu();
return;
}
}
}
static void
paste(void)
{
char *p, *q;
int di;
unsigned long dl;
Atom da;
/* we have been given the current selection, now insert it into input */
if (XGetWindowProperty(dpy, win, utf8, 0, (sizeof text / 4) + 1, False,
utf8, &da, &di, &dl, &dl, (unsigned char **)&p)
== Success && p) {
insert(p, (q = strchr(p, '\n')) ? q - p : (ssize_t)strlen(p));
XFree(p);
}
drawmenu();
}
static void
readstdin(void)
{
char buf[sizeof text], *p;
size_t i, imax = 0, size = 0;
unsigned int tmpmax = 0;
/* read each line from stdin and add it to the item list */
for (i = 0; fgets(buf, sizeof buf, stdin); i++) {
if (i + 1 >= size / sizeof *items)
if (!(items = realloc(items, (size += BUFSIZ))))
die("cannot realloc %u bytes:", size);
if ((p = strchr(buf, '\n')))
*p = '\0';
if (!(items[i].text = strdup(buf)))
die("cannot strdup %u bytes:", strlen(buf) + 1);
items[i].id = i; /* for multiselect */
drw_font_getexts(drw->fonts, buf, strlen(buf), &tmpmax, NULL);
if (tmpmax > inputw) {
inputw = tmpmax;
imax = i;
}
}
if (items)
items[i].text = NULL;
inputw = items ? TEXTW(items[imax].text) : 0;
lines = MIN(lines, i);
}
static void
run(void)
{
XEvent ev;
int i;
while (!XNextEvent(dpy, &ev)) {
if (preselected) {
for (i = 0; i < preselected; i++) {
if (sel && sel->right && (sel = sel->right) == next) {
curr = next;
calcoffsets();
}
}
drawmenu();
preselected = 0;
}
if (XFilterEvent(&ev, win))
continue;
switch(ev.type) {
case DestroyNotify:
if (ev.xdestroywindow.window != win)
break;
cleanup();
exit(1);
case ButtonPress:
buttonpress(&ev);
break;
case Expose:
if (ev.xexpose.count == 0)
drw_map(drw, win, 0, 0, mw, mh);
break;
case FocusIn:
/* regrab focus from parent window */
if (ev.xfocus.window != win)
grabfocus();
break;
case KeyPress:
keypress(&ev.xkey);
break;
case SelectionNotify:
if (ev.xselection.property == utf8)
paste();
break;
case VisibilityNotify:
if (ev.xvisibility.state != VisibilityUnobscured)
XRaiseWindow(dpy, win);
break;
}
}
}
static void
setup(void)
{
int x, y, i, j;
unsigned int du;
XSetWindowAttributes swa;
XIM xim;
Window w, dw, *dws;
XWindowAttributes wa;
XClassHint ch = {"dmenu", "dmenu"};
#ifdef XINERAMA
XineramaScreenInfo *info;
Window pw;
int a, di, n, area = 0;
#endif
/* init appearance */
for (j = 0; j < SchemeLast; j++)
scheme[j] = drw_scm_create(drw, colors[j], alphas[j], 2);
clip = XInternAtom(dpy, "CLIPBOARD", False);
utf8 = XInternAtom(dpy, "UTF8_STRING", False);
/* calculate menu geometry */
bh = drw->fonts->h + 2;
bh = MAX(bh,lineheight); /* make a menu line AT LEAST 'lineheight' tall */
lines = MAX(lines, 0);
mh = (lines + 1) * bh;
#ifdef XINERAMA
i = 0;
if (parentwin == root && (info = XineramaQueryScreens(dpy, &n))) {
XGetInputFocus(dpy, &w, &di);
if (mon >= 0 && mon < n)
i = mon;
else if (w != root && w != PointerRoot && w != None) {
/* find top-level window containing current input focus */
do {
if (XQueryTree(dpy, (pw = w), &dw, &w, &dws, &du) && dws)
XFree(dws);
} while (w != root && w != pw);
/* find xinerama screen with which the window intersects most */
if (XGetWindowAttributes(dpy, pw, &wa))
for (j = 0; j < n; j++)
if ((a = INTERSECT(wa.x, wa.y, wa.width, wa.height, info[j])) > area) {