+resizetitle(Client *c)
+{
+ int i;
+
+ c->tw = 0;
+ for(i = 0; i < TLast; i++)
+ if(c->tags[i])
+ c->tw += textw(c->tags[i]);
+ c->tw += textw(c->name);
+ if(c->tw > c->w)
+ c->tw = c->w + 2;
+ c->tx = c->x + c->w - c->tw + 2;
+ c->ty = c->y;
+ if(c->tags[tsel])
+ XMoveResizeWindow(dpy, c->title, c->tx, c->ty, c->tw, c->th);
+ else
+ XMoveResizeWindow(dpy, c->title, c->tx + 2 * sw, c->ty, c->tw, c->th);
+
+}
+
+static int
+xerrordummy(Display *dsply, XErrorEvent *ee)
+{
+ return 0;
+}
+
+/* extern functions */
+
+void
+ban(Client *c)
+{
+ XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
+ XMoveWindow(dpy, c->title, c->tx + 2 * sw, c->ty);
+}
+
+void
+focus(Client *c)
+{
+ Client *old = sel;
+ XEvent ev;
+
+ sel = c;
+ if(old && old != c)
+ drawtitle(old);
+ drawtitle(c);
+ XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
+ XSync(dpy, False);
+ while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
+}
+
+void
+focusnext(Arg *arg)
+{
+ Client *c;
+
+ if(!sel)
+ return;
+
+ if(sel->ismax)
+ togglemax(NULL);
+
+ if(!(c = getnext(sel->next, tsel)))
+ c = getnext(clients, tsel);
+ if(c) {
+ higher(c);
+ focus(c);
+ }
+}
+
+void
+focusprev(Arg *arg)
+{
+ Client *c;
+
+ if(!sel)
+ return;
+
+ if(sel->ismax)
+ togglemax(NULL);
+
+ if(!(c = getprev(sel->prev))) {
+ for(c = clients; c && c->next; c = c->next);
+ c = getprev(c);
+ }
+ if(c) {
+ higher(c);
+ focus(c);
+ }
+}
+
+Client *
+getclient(Window w)
+{
+ Client *c;
+
+ for(c = clients; c; c = c->next)
+ if(c->win == w)
+ return c;
+ return NULL;
+}
+
+Client *
+getctitle(Window w)
+{
+ Client *c;
+
+ for(c = clients; c; c = c->next)
+ if(c->title == w)
+ return c;
+ return NULL;
+}
+
+void
+gravitate(Client *c, Bool invert)
+{
+ int dx = 0, dy = 0;
+
+ switch(c->grav) {
+ default:
+ break;
+ case StaticGravity:
+ case NorthWestGravity:
+ case NorthGravity:
+ case NorthEastGravity:
+ dy = c->border;
+ break;
+ case EastGravity:
+ case CenterGravity:
+ case WestGravity:
+ dy = -(c->h / 2) + c->border;
+ break;
+ case SouthEastGravity:
+ case SouthGravity:
+ case SouthWestGravity:
+ dy = -(c->h);
+ break;
+ }
+
+ switch (c->grav) {
+ default:
+ break;
+ case StaticGravity:
+ case NorthWestGravity:
+ case WestGravity:
+ case SouthWestGravity:
+ dx = c->border;
+ break;
+ case NorthGravity:
+ case CenterGravity:
+ case SouthGravity:
+ dx = -(c->w / 2) + c->border;
+ break;
+ case NorthEastGravity:
+ case EastGravity:
+ case SouthEastGravity:
+ dx = -(c->w + c->border);
+ break;
+ }
+
+ if(invert) {
+ dx = -dx;
+ dy = -dy;
+ }
+ c->x += dx;
+ c->y += dy;
+}
+
+void
+higher(Client *c)
+{
+ XRaiseWindow(dpy, c->win);
+ XRaiseWindow(dpy, c->title);
+}
+
+void
+killclient(Arg *arg)
+{
+ if(!sel)
+ return;
+ if(sel->proto & WM_PROTOCOL_DELWIN)
+ sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
+ else
+ XKillClient(dpy, sel->win);
+}
+
+void
+lower(Client *c)
+{
+ XLowerWindow(dpy, c->title);
+ XLowerWindow(dpy, c->win);
+}
+
+void
+manage(Window w, XWindowAttributes *wa)
+{
+ Client *c;
+ Window trans;
+ XSetWindowAttributes twa;
+
+ c = emallocz(sizeof(Client));
+ c->win = w;
+ c->x = c->tx = wa->x;
+ c->y = c->ty = wa->y;
+ c->w = c->tw = wa->width;
+ c->h = wa->height;
+ c->th = bh;
+
+ if(c->y < bh)
+ c->y = c->ty = bh;
+
+ c->border = 1;
+ c->proto = getproto(c->win);
+ setsize(c);
+ XSelectInput(dpy, c->win,
+ StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
+ XGetTransientForHint(dpy, c->win, &trans);
+ twa.override_redirect = 1;
+ twa.background_pixmap = ParentRelative;
+ twa.event_mask = ExposureMask;
+
+ c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
+ 0, DefaultDepth(dpy, screen), CopyFromParent,
+ DefaultVisual(dpy, screen),
+ CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
+
+ settags(c);
+
+ if(clients)
+ clients->prev = c;
+ c->next = clients;
+ clients = c;
+
+ XGrabButton(dpy, Button1, MODKEY, c->win, False, ButtonPressMask,
+ GrabModeAsync, GrabModeSync, None, None);
+ XGrabButton(dpy, Button2, MODKEY, c->win, False, ButtonPressMask,
+ GrabModeAsync, GrabModeSync, None, None);
+ XGrabButton(dpy, Button3, MODKEY, c->win, False, ButtonPressMask,
+ GrabModeAsync, GrabModeSync, None, None);
+
+ if(!c->isfloat)
+ c->isfloat = trans || (c->maxw && c->minw &&
+ (c->maxw == c->minw) && (c->maxh == c->minh));
+
+
+ settitle(c);
+ arrange(NULL);
+
+ /* mapping the window now prevents flicker */
+ if(c->tags[tsel]) {
+ XMapRaised(dpy, c->win);
+ XMapRaised(dpy, c->title);
+ focus(c);
+ }
+ else {
+ XMapRaised(dpy, c->win);
+ XMapRaised(dpy, c->title);
+
+ }
+}
+
+void
+pop(Client *c)
+{
+ Client **l;
+
+ for(l = &clients; *l && *l != c; l = &(*l)->next);
+ if(c->prev)
+ c->prev->next = c->next;
+ if(c->next)
+ c->next->prev = c->prev;
+ *l = c->next;
+
+ c->prev = NULL;
+ if(clients)
+ clients->prev = c;
+ c->next = clients;
+ clients = c;
+ arrange(NULL);
+}
+
+void
+resize(Client *c, Bool sizehints, Corner sticky)
+{
+ int bottom = c->y + c->h;
+ int right = c->x + c->w;
+ XConfigureEvent e;
+
+ if(sizehints) {
+ if(c->incw)
+ c->w -= (c->w - c->basew) % c->incw;
+ if(c->inch)
+ c->h -= (c->h - c->baseh) % c->inch;
+ if(c->minw && c->w < c->minw)
+ c->w = c->minw;
+ if(c->minh && c->h < c->minh)
+ c->h = c->minh;
+ if(c->maxw && c->w > c->maxw)
+ c->w = c->maxw;
+ if(c->maxh && c->h > c->maxh)
+ c->h = c->maxh;
+ }
+ if(c->x > sw) /* might happen on restart */
+ c->x = sw - c->w;
+ if(c->y > sh)
+ c->y = sh - c->h;
+ if(sticky == TopRight || sticky == BotRight)
+ c->x = right - c->w;
+ if(sticky == BotLeft || sticky == BotRight)
+ c->y = bottom - c->h;
+
+ resizetitle(c);
+ XSetWindowBorderWidth(dpy, c->win, 1);
+ XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
+
+ e.type = ConfigureNotify;
+ e.event = c->win;
+ e.window = c->win;
+ e.x = c->x;
+ e.y = c->y;
+ e.width = c->w;
+ e.height = c->h;
+ e.border_width = c->border;
+ e.above = None;
+ e.override_redirect = False;
+ XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
+ XSync(dpy, False);
+}
+
+void
+setsize(Client *c)
+{
+ long msize;
+ XSizeHints size;
+
+ if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
+ size.flags = PSize;
+ c->flags = size.flags;
+ if(c->flags & PBaseSize) {
+ c->basew = size.base_width;
+ c->baseh = size.base_height;
+ }
+ else
+ c->basew = c->baseh = 0;
+ if(c->flags & PResizeInc) {
+ c->incw = size.width_inc;
+ c->inch = size.height_inc;
+ }
+ else
+ c->incw = c->inch = 0;
+ if(c->flags & PMaxSize) {
+ c->maxw = size.max_width;
+ c->maxh = size.max_height;
+ }
+ else
+ c->maxw = c->maxh = 0;
+ if(c->flags & PMinSize) {
+ c->minw = size.min_width;
+ c->minh = size.min_height;
+ }
+ else
+ c->minw = c->minh = 0;
+ if(c->flags & PWinGravity)
+ c->grav = size.win_gravity;
+ else
+ c->grav = NorthWestGravity;
+}
+
+void
+settitle(Client *c)