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tabbed.c
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/*
* See LICENSE file for copyright and license details.
*/
#include <X11/XKBlib.h>
#include <X11/Xatom.h>
#include <X11/Xft/Xft.h>
#include <X11/Xlib.h>
#include <X11/Xproto.h>
#include <X11/Xutil.h>
#include <bsd/string.h>
#include <errno.h>
#include <locale.h>
#include <signal.h>
#include <stdarg.h>
#include <stdatomic.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>
#ifdef BUILD_INSTRUMENTED_COVERAGE
#include <gcov.h>
#endif
#include <zmq.h>
#include "SafeXFetchName.h"
#include "arg.h"
#include "utils.h"
#include "zmq_server.h"
/* XEMBED messages */
#define XEMBED_EMBEDDED_NOTIFY 0
#define XEMBED_WINDOW_ACTIVATE 1
#define XEMBED_WINDOW_DEACTIVATE 2
#define XEMBED_REQUEST_FOCUS 3
#define XEMBED_FOCUS_IN 4
#define XEMBED_FOCUS_OUT 5
#define XEMBED_FOCUS_NEXT 6
#define XEMBED_FOCUS_PREV 7
/* 8-9 were used for XEMBED_GRAB_KEY/XEMBED_UNGRAB_KEY */
#define XEMBED_MODALITY_ON 10
#define XEMBED_MODALITY_OFF 11
#define XEMBED_REGISTER_ACCELERATOR 12
#define XEMBED_UNREGISTER_ACCELERATOR 13
#define XEMBED_ACTIVATE_ACCELERATOR 14
/* Details for XEMBED_FOCUS_IN: */
#define XEMBED_FOCUS_CURRENT 0
#define XEMBED_FOCUS_FIRST 1
#define XEMBED_FOCUS_LAST 2
/* Macros */
#define MAX(a, b) ((a) > (b) ? (a) : (b))
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define LENGTH(x) (sizeof((x)) / sizeof(*(x)))
#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
// To only be used with statically allocated strings
// because of the sizeof
#define TEXTW(x) (textnw(x, strnlen(x, sizeof(x))) + dc.font.height)
// Max size of string returned by XGetProperty
// https://github.com/mirror/libX11/blob/192bbb9e2fc45df4e17b35b6d14ea0eb418dbd39/src/GetProp.c#L83
// It's there to limit the problems if
#define MAX_XTEXT_SIZE (INT_MAX >> 4) * sizeof(char)
#define TIMEOUT_TURBO_MODE_MS 100
#define TIMEOUT_SLEEP_MODE_MS 1000
enum { ColFG, ColBG, ColLast }; /* color */
enum {
WMProtocols,
WMDelete,
WMName,
WMState,
WMFullscreen,
XEmbed,
WMSelectTab,
WMLast
}; /* default atoms */
typedef union {
int i;
const void *v;
} Arg;
typedef struct {
unsigned int mod;
KeySym keysym;
void (*func)(const Arg *);
const Arg arg;
} Key;
typedef struct {
int x, y, w, h;
XftColor norm[ColLast];
XftColor sel[ColLast];
XftColor urg[ColLast];
Drawable drawable;
GC gc;
struct {
int ascent;
int descent;
int height;
XftFont *xfont;
} font;
} DC; /* draw context */
typedef struct {
char name[256];
Window win;
int tabx;
Bool urgent;
Bool closed;
} Client;
typedef struct {
int needshellpwd;
int server_port;
unsigned long current_focused_window;
int shellpwd_written;
int shellpwd_read;
int running;
unsigned long debug_time;
char shell_pwd[256];
} SharedMemory;
/* function declarations */
#define SHARED_MEMORY_SIZE sizeof(SharedMemory)
void *create_shared_memory(size_t size);
static void buttonpress(const XEvent *e);
static void cleanup(void);
static void clientmessage(const XEvent *e);
static void configurenotify(const XEvent *e);
static void configurerequest(const XEvent *e);
static void createnotify(const XEvent *e);
static void destroynotify(const XEvent *e);
static void die(const char *errstr, ...);
static void drawbar(void);
static void drawtext(const char *text, XftColor col[ColLast], size_t size);
static void *ecalloc(size_t n, size_t size);
static void *erealloc(void *o, size_t size);
static void expose(const XEvent *e);
static void focus(int c);
static void focusin(const XEvent *e);
static void focusonce(const Arg *arg);
static void focusurgent(const Arg *arg);
static void fullscreen(const Arg *arg);
static char *getatom(int a);
static int getclient(Window w);
static XftColor getcolor(const char *colstr);
static int getfirsttab(void);
static Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
static void initfont(const char *fontstr);
static Bool isprotodel(int c);
static void keypress(const XEvent *e);
static void killclient(const Arg *arg);
static void manage(Window win);
static void maprequest(const XEvent *e);
static void move(const Arg *arg);
static void movetab(const Arg *arg);
static void propertynotify(const XEvent *e);
static void resize(int c, int w, int h);
static void rotate(const Arg *arg);
static void run(void);
static void setdefaultxembedevent(XEvent *e);
static void sendxembed(int c, long msg, long detail, long d1, long d2);
static void setcmd(int argc, char *argv[], int);
static void insertcmd(char *command, size_t cmd_size, size_t pos);
static void printcmds(int debug);
static void setup(void);
static void sigchld(int unused);
static int execvpwitharg(const Arg *arg);
static void spawn(const Arg *arg);
static void spawn_no_xembed_port(const Arg *arg);
static int textnw(const char *text, unsigned int len);
static void toggle(const Arg *arg);
static void unmanage(int c);
static void unmapnotify(const XEvent *e);
static void updatenumlockmask(void);
static void updatetitle(int c);
static int xerror(Display *dpy, XErrorEvent *ee);
static void xsettitle(Window w, const char *str);
/* variables */
static int screen;
static void (*handler[LASTEvent])(const XEvent *) = {
[ButtonPress] = buttonpress,
[ClientMessage] = clientmessage,
[ConfigureNotify] = configurenotify,
[ConfigureRequest] = configurerequest,
[CreateNotify] = createnotify,
[UnmapNotify] = unmapnotify,
[DestroyNotify] = destroynotify,
[Expose] = expose,
[FocusIn] = focusin,
[KeyPress] = keypress,
[MapRequest] = maprequest,
[PropertyNotify] = propertynotify,
};
static int bh, wx, wy, ww, wh;
static unsigned int numlockmask;
static Bool running = True, nextfocus, doinitspawn = True, fillagain = False,
closelastclient = False, killclientsfirst = False;
static SharedMemory *shared_memory = NULL;
static int log_file;
static char xembed_port_option[128];
static char set_working_dir_option[128];
static Display *dpy;
static DC dc;
static Atom wmatom[WMLast];
static Window root, win;
static Client **clients;
static int nclients, sel = -1, lastsel = -1;
static int (*xerrorxlib)(Display *, XErrorEvent *);
static int cmd_append_pos;
static char winid[64];
static char **cmd;
static char *wmname = "tabbed";
static const char *geometry;
char *argv0;
/* configuration, allows nested code to access above variables */
#include "config.h"
void *create_shared_memory(size_t size) {
// Stolen from https://stackoverflow.com/a/5656561
// Our memory buffer will be readable and writable:
int protection = PROT_READ | PROT_WRITE;
// The buffer will be shared (meaning other processes can access it), but
// anonymous (meaning third-party processes cannot obtain an address for it),
// so only this process and its children will be able to use it:
int visibility = MAP_SHARED | MAP_ANONYMOUS;
// The remaining parameters to `mmap()` are not important for this use case,
// but the manpage for `mmap` explains their purpose.
return mmap(NULL, size, protection, visibility, -1, 0);
}
void buttonpress(const XEvent *e) {
const XButtonPressedEvent *ev = &e->xbutton;
int i, fc;
Arg arg;
if (ev->y < 0 || ev->y > bh)
return;
if (((fc = getfirsttab()) > 0 && ev->x < TEXTW(before)) || ev->x < 0)
return;
for (i = fc; i < nclients; i++) {
if (clients[i]->tabx > ev->x) {
switch (ev->button) {
case Button1:
focus(i);
break;
case Button2:
focus(i);
killclient(NULL);
break;
case Button4: /* FALLTHROUGH */
case Button5:
arg.i = ev->button == Button4 ? -1 : 1;
rotate(&arg);
break;
}
break;
}
}
}
void cleanup(void) {
int i;
for (i = 0; i < nclients; i++) {
focus(i);
killclient(NULL);
XReparentWindow(dpy, clients[i]->win, root, 0, 0);
unmanage(i);
}
free(clients);
clients = NULL;
XFreePixmap(dpy, dc.drawable);
XFreeGC(dpy, dc.gc);
XDestroyWindow(dpy, win);
XSync(dpy, False);
free(cmd);
int *shared_running = &shared_memory->running;
*shared_running = False;
// Wait for all child to quit before unmapping the shared memory
dprintf(log_file, "[debug-tabbed] waiting for childs to terminate...\n");
pid_t wpid;
while ((wpid = wait(NULL)) != -1) {
dprintf(log_file, "[debug-tabbed] CHILD `%d` exitted\n", (int)wpid);
}
dprintf(log_file, "[debug-tabbed] All childs terminated, we can unmap the "
"shared memory !\n");
if ((void *)shared_memory != MAP_FAILED) {
if (munmap((void *)shared_memory, SHARED_MEMORY_SIZE) == -1) {
dprintf(log_file,
"[error-tabbed] can't free shared memory, munmap(%ld) == -1\n",
SHARED_MEMORY_SIZE);
}
}
}
void clientmessage(const XEvent *e) {
const XClientMessageEvent *ev = &e->xclient;
if (ev->message_type == wmatom[WMProtocols] &&
ev->data.l[0] == wmatom[WMDelete]) {
if (nclients > 1 && killclientsfirst) {
killclient(0);
return;
}
running = False;
}
}
void configurenotify(const XEvent *e) {
const XConfigureEvent *ev = &e->xconfigure;
if (ev->window == win && (ev->width != ww || ev->height != wh)) {
ww = ev->width;
wh = ev->height;
XFreePixmap(dpy, dc.drawable);
dc.drawable = XCreatePixmap(dpy, root, ww, wh, DefaultDepth(dpy, screen));
if (sel > -1)
resize(sel, ww, wh - bh);
XSync(dpy, False);
}
}
void configurerequest(const XEvent *e) {
const XConfigureRequestEvent *ev = &e->xconfigurerequest;
XWindowChanges wc;
int c;
if ((c = getclient(ev->window)) > -1) {
wc.x = 0;
wc.y = bh;
wc.width = ww;
wc.height = wh - bh;
wc.border_width = 0;
wc.sibling = ev->above;
wc.stack_mode = ev->detail;
XConfigureWindow(dpy, clients[c]->win, ev->value_mask, &wc);
}
}
void createnotify(const XEvent *e) {
const XCreateWindowEvent *ev = &e->xcreatewindow;
if (ev->window != win && getclient(ev->window) < 0)
manage(ev->window);
}
void destroynotify(const XEvent *e) {
const XDestroyWindowEvent *ev = &e->xdestroywindow;
int c;
if ((c = getclient(ev->window)) > -1)
unmanage(c);
}
void die(const char *errstr, ...) {
va_list ap;
va_start(ap, errstr);
vfprintf(stderr, errstr, ap);
va_end(ap);
#ifdef BUILD_INSTRUMENTED_COVERAGE
__gcov_dump();
#endif
exit(EXIT_FAILURE);
}
void drawbar(void) {
XftColor *col;
int c, cc, fc, width;
char *name = NULL;
if (nclients == 0) {
dc.x = 0;
dc.w = ww;
unsigned long nitems;
SafeXFetchName(dpy, win, &name, &nitems);
drawtext(name ? name : "", dc.norm, nitems);
XCopyArea(dpy, dc.drawable, win, dc.gc, 0, 0, ww, bh, 0, 0);
XSync(dpy, False);
return;
}
width = ww;
cc = ww / tabwidth;
if (nclients > cc)
cc = (ww - TEXTW(before) - TEXTW(after)) / tabwidth;
if ((fc = getfirsttab()) + cc < nclients) {
dc.w = TEXTW(after);
dc.x = width - dc.w;
drawtext(after, dc.sel, sizeof(after));
width -= dc.w;
}
dc.x = 0;
if (fc > 0) {
dc.w = TEXTW(before);
drawtext(before, dc.sel, sizeof(before));
dc.x += dc.w;
width -= dc.w;
}
cc = MIN(cc, nclients);
for (c = fc; c < fc + cc; c++) {
dc.w = width / cc;
if (c == sel) {
col = dc.sel;
dc.w += width % cc;
} else {
col = clients[c]->urgent ? dc.urg : dc.norm;
}
const size_t sizeof_client_name = sizeof(((Client *)0)->name);
drawtext(clients[c]->name, col, sizeof_client_name);
dc.x += dc.w;
clients[c]->tabx = dc.x;
}
XCopyArea(dpy, dc.drawable, win, dc.gc, 0, 0, ww, bh, 0, 0);
XSync(dpy, False);
}
void drawtext(const char *text, XftColor col[ColLast], size_t size) {
int x, y, h, len, olen;
char buf[256];
XftDraw *d;
XRectangle r = {dc.x, dc.y, dc.w, dc.h};
XSetForeground(dpy, dc.gc, col[ColBG].pixel);
XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
if (!text)
return;
olen = strnlen(text, size);
h = dc.font.ascent + dc.font.descent;
y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
x = dc.x + (h / 2);
/* shorten text if necessary */
for (len = MIN(olen, sizeof(buf)); len && textnw(text, len) > dc.w - h; len--)
;
if (!len)
return;
memcpy(buf, text, len);
if (len < olen) {
int i, j;
for (i = len, j = strnlen(titletrim, sizeof(titletrim)); j && i;
buf[--i] = titletrim[--j])
;
}
d = XftDrawCreate(dpy, dc.drawable, DefaultVisual(dpy, screen),
DefaultColormap(dpy, screen));
XftDrawStringUtf8(d, &col[ColFG], dc.font.xfont, x, y, (XftChar8 *)buf, len);
XftDrawDestroy(d);
}
void *ecalloc(size_t n, size_t size) {
void *p;
if (!(p = calloc(n, size)))
die("%s: cannot calloc\n", argv0);
return p;
}
void *erealloc(void *o, size_t size) {
void *p;
if (!(p = realloc(o, size)))
die("%s: cannot realloc\n", argv0);
return p;
}
void expose(const XEvent *e) {
const XExposeEvent *ev = &e->xexpose;
if (ev->count == 0 && win == ev->window)
drawbar();
}
void focus(int c) {
char buf[BUFSIZ] = "tabbed-" VERSION " ::";
XWMHints *wmh;
/* If c, sel and clients are -1, raise tabbed-win itself */
if (nclients == 0) {
cmd[cmd_append_pos] = NULL;
size_t i, n;
for (i = 0, n = strnlen(buf, BUFSIZ); cmd[i] && n < sizeof(buf); i++)
n += snprintf(&buf[n], sizeof(buf) - n, " %s", cmd[i]);
xsettitle(win, buf);
XRaiseWindow(dpy, win);
return;
}
if (c < 0 || c >= nclients)
return;
resize(c, ww, wh - bh);
XRaiseWindow(dpy, clients[c]->win);
XSetInputFocus(dpy, clients[c]->win, RevertToParent, CurrentTime);
sendxembed(c, XEMBED_FOCUS_IN, XEMBED_FOCUS_CURRENT, 0, 0);
sendxembed(c, XEMBED_WINDOW_ACTIVATE, 0, 0, 0);
xsettitle(win, clients[c]->name);
if (sel != c) {
lastsel = sel;
sel = c;
}
if (clients[c]->urgent && (wmh = XGetWMHints(dpy, clients[c]->win))) {
wmh->flags &= ~XUrgencyHint;
XSetWMHints(dpy, clients[c]->win, wmh);
clients[c]->urgent = False;
XFree(wmh);
}
drawbar();
XSync(dpy, False);
int *needshellpwd = &shared_memory->needshellpwd;
unsigned long *current_focused_window =
&shared_memory->current_focused_window;
*current_focused_window = clients[c]->win;
*needshellpwd = True;
dprintf(log_file,
"[log-tabbed] New current focused window ID : `%ld`, needshellpwd "
": `%s`\n",
*current_focused_window, (*needshellpwd) ? "True" : "False");
}
void focusin(const XEvent *e) {
const XFocusChangeEvent *ev = &e->xfocus;
int dummy;
Window focused;
if (ev->mode != NotifyUngrab) {
XGetInputFocus(dpy, &focused, &dummy);
if (focused == win)
focus(sel);
}
}
void focusonce(const Arg *arg) { nextfocus = True; }
void focusurgent(const Arg *arg) {
int c;
if (sel < 0)
return;
for (c = (sel + 1) % nclients; c != sel; c = (c + 1) % nclients) {
if (clients[c]->urgent) {
focus(c);
return;
}
}
}
void fullscreen(const Arg *arg) {
XEvent e;
e.type = ClientMessage;
e.xclient.window = win;
e.xclient.message_type = wmatom[WMState];
e.xclient.format = 32;
e.xclient.data.l[0] = 2;
e.xclient.data.l[1] = wmatom[WMFullscreen];
e.xclient.data.l[2] = 0;
XSendEvent(dpy, root, False, SubstructureNotifyMask, &e);
}
char *getatom(int a) {
static char buf[BUFSIZ];
Atom adummy;
int idummy;
unsigned long ldummy;
unsigned char *p = NULL;
XGetWindowProperty(dpy, win, wmatom[a], 0L, BUFSIZ, False, XA_STRING, &adummy,
&idummy, &ldummy, &ldummy, &p);
if (p) {
buf[0] = '\0';
strlcat(buf, (char *)p, LENGTH(buf) - 1);
} else {
buf[0] = '\0';
}
XFree(p);
return buf;
}
int getclient(Window w) {
int i;
for (i = 0; i < nclients; i++) {
if (clients[i]->win == w)
return i;
}
return -1;
}
XftColor getcolor(const char *colstr) {
XftColor color;
if (!XftColorAllocName(dpy, DefaultVisual(dpy, screen),
DefaultColormap(dpy, screen), colstr, &color))
die("%s: cannot allocate color '%s'\n", argv0, colstr);
return color;
}
int getfirsttab(void) {
int cc, ret;
if (sel < 0)
return 0;
cc = ww / tabwidth;
if (nclients > cc)
cc = (ww - TEXTW(before) - TEXTW(after)) / tabwidth;
ret = sel - cc / 2 + (cc + 1) % 2;
return ret < 0 ? 0 : ret + cc > nclients ? MAX(0, nclients - cc) : ret;
}
Bool gettextprop(Window w, Atom atom, char *text, unsigned int size) {
char **list = NULL;
int n;
XTextProperty name;
if (!text || size == 0)
return False;
text[0] = '\0';
XGetTextProperty(dpy, w, &name, atom);
if (!name.nitems)
return False;
if (name.encoding == XA_STRING) {
// Paranoïa
text[0] = '\0';
strlcat(text, (char *)name.value, size - 1);
} else if (XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success &&
n > 0 && *list) {
// Paranoïa again
text[0] = '\0';
strlcat(text, *list, size - 1);
XFreeStringList(list);
}
text[size - 1] = '\0';
XFree(name.value);
return True;
}
void initfont(const char *fontstr) {
if (!(dc.font.xfont = XftFontOpenName(dpy, screen, fontstr)) &&
!(dc.font.xfont = XftFontOpenName(dpy, screen, "fixed")))
die("error, cannot load font: '%s'\n", fontstr);
dc.font.ascent = dc.font.xfont->ascent;
dc.font.descent = dc.font.xfont->descent;
dc.font.height = dc.font.ascent + dc.font.descent;
}
Bool isprotodel(int c) {
int n;
Atom *protocols;
Bool ret = False;
if (XGetWMProtocols(dpy, clients[c]->win, &protocols, &n)) {
int i;
for (i = 0; !ret && i < n; i++) {
if (protocols[i] == wmatom[WMDelete])
ret = True;
}
XFree(protocols);
}
return ret;
}
void keypress(const XEvent *e) {
const XKeyEvent *ev = &e->xkey;
unsigned int i;
KeySym keysym;
keysym = XkbKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0, 0);
for (i = 0; i < LENGTH(keys); i++) {
if (keysym == keys[i].keysym &&
CLEANMASK(keys[i].mod) == CLEANMASK(ev->state) && keys[i].func)
keys[i].func(&(keys[i].arg));
}
}
void killclient(const Arg *arg) {
XEvent ev;
if (sel < 0)
return;
if (isprotodel(sel) && !clients[sel]->closed) {
ev.type = ClientMessage;
ev.xclient.window = clients[sel]->win;
ev.xclient.message_type = wmatom[WMProtocols];
ev.xclient.format = 32;
ev.xclient.data.l[0] = wmatom[WMDelete];
ev.xclient.data.l[1] = CurrentTime;
XSendEvent(dpy, clients[sel]->win, False, NoEventMask, &ev);
clients[sel]->closed = True;
} else {
XKillClient(dpy, clients[sel]->win);
}
}
void manage(Window w) {
updatenumlockmask();
{
int i, j, nextpos;
unsigned int modifiers[] = {0, LockMask, numlockmask,
numlockmask | LockMask};
KeyCode code;
Client *c;
XEvent e;
XWithdrawWindow(dpy, w, 0);
XReparentWindow(dpy, w, win, 0, bh);
XSelectInput(dpy, w,
PropertyChangeMask | StructureNotifyMask | EnterWindowMask);
XSync(dpy, False);
for (i = 0; i < LENGTH(keys); i++) {
if ((code = XKeysymToKeycode(dpy, keys[i].keysym))) {
for (j = 0; j < LENGTH(modifiers); j++) {
XGrabKey(dpy, code, keys[i].mod | modifiers[j], w, True,
GrabModeAsync, GrabModeAsync);
}
}
}
c = ecalloc(1, sizeof *c);
c->win = w;
nclients++;
clients = erealloc(clients, sizeof(Client *) * nclients);
if (npisrelative) {
nextpos = sel + newposition;
} else {
if (newposition < 0)
nextpos = nclients - newposition;
else
nextpos = newposition;
}
if (nextpos >= nclients)
nextpos = nclients - 1;
if (nextpos < 0)
nextpos = 0;
if (nclients > 1 && nextpos < nclients - 1)
memmove(&clients[nextpos + 1], &clients[nextpos],
sizeof(Client *) * (nclients - nextpos - 1));
clients[nextpos] = c;
updatetitle(nextpos);
XLowerWindow(dpy, w);
XMapWindow(dpy, w);
setdefaultxembedevent(&e);
e.xclient.window = w;
e.xclient.data.l[1] = XEMBED_EMBEDDED_NOTIFY;
e.xclient.data.l[2] = 0;
e.xclient.data.l[3] = win;
e.xclient.data.l[4] = 0;
XSendEvent(dpy, root, False, NoEventMask, &e);
XSync(dpy, False);
/* Adjust sel before focus does set it to lastsel. */
if (sel >= nextpos)
sel++;
focus(nextfocus ? nextpos : sel < 0 ? 0 : sel);
nextfocus = foreground;
}
}
void maprequest(const XEvent *e) {
const XMapRequestEvent *ev = &e->xmaprequest;
if (getclient(ev->window) < 0)
manage(ev->window);
}
void move(const Arg *arg) {
if (arg->i >= 0 && arg->i < nclients)
focus(arg->i);
}
void movetab(const Arg *arg) {
int c;
Client *new;
if (sel < 0)
return;
c = (sel + arg->i) % nclients;
if (c < 0)
c += nclients;
if (c == sel)
return;
new = clients[sel];
if (sel < c)
memmove(&clients[sel], &clients[sel + 1], sizeof(Client *) * (c - sel));
else
memmove(&clients[c + 1], &clients[c], sizeof(Client *) * (sel - c));
clients[c] = new;
sel = c;
drawbar();
}
void propertynotify(const XEvent *e) {
const XPropertyEvent *ev = &e->xproperty;
XWMHints *wmh;
int c;
char *selection = NULL;
Arg arg;
if (ev->state == PropertyNewValue && ev->atom == wmatom[WMSelectTab]) {
selection = getatom(WMSelectTab);
if (!strncmp(selection, "0x", 2)) {
arg.i = getclient(strtoul(selection, NULL, 0));
move(&arg);
} else {
cmd[cmd_append_pos] = selection;
arg.v = cmd;
spawn(&arg);
}
} else if (ev->state == PropertyNewValue && ev->atom == XA_WM_HINTS &&
(c = getclient(ev->window)) > -1 &&
(wmh = XGetWMHints(dpy, clients[c]->win))) {
if (wmh->flags & XUrgencyHint) {
XFree(wmh);
wmh = XGetWMHints(dpy, win);
if (c != sel) {
if (urgentswitch && wmh && !(wmh->flags & XUrgencyHint)) {
/* only switch, if tabbed was focused
* since last urgency hint if WMHints
* could not be received,
* default to no switch */
focus(c);
} else {
/* if no switch should be performed,
* mark tab as urgent */
clients[c]->urgent = True;
drawbar();
}
}
if (wmh && !(wmh->flags & XUrgencyHint)) {
/* update tabbed urgency hint
* if not set already */
wmh->flags |= XUrgencyHint;
XSetWMHints(dpy, win, wmh);
}
}
XFree(wmh);
} else if (ev->state != PropertyDelete && ev->atom == XA_WM_NAME &&
(c = getclient(ev->window)) > -1) {
updatetitle(c);
}
}
void resize(int c, int w, int h) {
XConfigureEvent ce;
XWindowChanges wc;
ce.x = 0;
ce.y = bh;
ce.width = wc.width = w;
ce.height = wc.height = h;
ce.type = ConfigureNotify;
ce.display = dpy;
ce.event = clients[c]->win;
ce.window = clients[c]->win;
ce.above = None;
ce.override_redirect = False;
ce.border_width = 0;
XConfigureWindow(dpy, clients[c]->win, CWWidth | CWHeight, &wc);
XSendEvent(dpy, clients[c]->win, False, StructureNotifyMask, (XEvent *)&ce);
}
void rotate(const Arg *arg) {
int nsel;
if (sel < 0) {
fprintf(stderr, "[error-tabbed] invalid sel `%d`\n", sel);
return;
}
if (arg->i == 0) {
if (lastsel > -1) {
focus(lastsel);
}
} else if (sel > -1) {
/* Rotating in an arg->i step around the clients. */
nsel = sel + arg->i;
while (nsel >= nclients)
nsel -= nclients;
while (nsel < 0)
nsel += nclients;
focus(nsel);
}
}
void run(void) {
XEvent ev;
/* main event loop */
XSync(dpy, False);
drawbar();
if (doinitspawn == True) {
spawn(NULL);
}
while (running) {
XNextEvent(dpy, &ev);
if (handler[ev.type])
(handler[ev.type])(&ev); /* call handler */
}
}
void setdefaultxembedevent(XEvent *e) {
e->xclient.type = ClientMessage;
e->xclient.message_type = wmatom[XEmbed];
e->xclient.format = 32;
e->xclient.data.l[0] = CurrentTime;
}
void sendxembed(int c, long msg, long detail, long d1, long d2) {
XEvent e = {0};
setdefaultxembedevent(&e);
e.xclient.window = clients[c]->win;
e.xclient.data.l[1] = msg;
e.xclient.data.l[2] = detail;
e.xclient.data.l[3] = d1;
e.xclient.data.l[4] = d2;
XSendEvent(dpy, clients[c]->win, False, NoEventMask, &e);
}
void setcmd(int argc, char *argv[], int replace) {
int i;
// Can possibly added 5 arguments (worst case scenario) :
// Winid if no replace
// xembed port option
// xembed port value
// working dir
// working dir value
cmd = ecalloc(argc + 6, sizeof(*cmd));
if (argc == 0)
return;
for (i = 0; i < argc; i++)
cmd[i] = argv[i];
cmd[replace > 0 ? replace : argc] = winid;
cmd_append_pos = argc + !replace;
cmd[cmd_append_pos] = cmd[cmd_append_pos + 1] = NULL;
}
void insertcmd(char *command, size_t cmd_size, size_t pos) {
printcmds(False);
int commands_count = 0;
while (cmd[commands_count++] != NULL)
;
--commands_count;
if (commands_count > 0) {