<html>
<head>
<title>dwm - dynamic window manager</title>
<meta name="author" content="Anselm R. Garbe">
<meta name="generator&qu/* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
* See LICENSE file for license details.
*/
#include "dwm.h"
#include <stdlib.h>
#include <string.h>
#include <X11/Xatom.h>
#include <X11/Xutil.h>
/* static functions */
static void
detachstack(Client *c) {
Client **tc;
for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
*tc = c->snext;
}
static void
grabbuttons(Client *c, Bool focused) {
XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
if(focused) {
XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
}
else
XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
GrabModeAsync, GrabModeSync, None, None);
}
static int
xerrordummy(Display *dsply, XErrorEvent *ee) {
return 0;
}
/* extern functions */
void
configure(Client *c) {
XEvent synev;
synev.type = ConfigureNotify;
synev.xconfigure.display = dpy;
synev.xconfigure.event = c->win;
synev.xconfigure.window = c->win;
synev.xconfigure.x = c->x;
synev.xconfigure.y = c->y;
synev.xconfigure.width = c->w;
synev.xconfigure.height = c->h;
synev.xconfigure.border_width = c->border;
synev.xconfigure.above = None;
XSendEvent(dpy, c->win, True, NoEventMask, &synev);
}
void
focus(Client *c) {
if(c && !isvisible(c))
return;
if(sel && sel != c) {
grabbuttons(sel, False);
XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
}
if(c) {
detachstack(c);
c->snext = stack;
stack = c;
grabbuttons(c, True);
}
sel = c;
drawstatus();
if(!selscreen)
return;
if(c) {
XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
}
else
XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
}
Client *
getclient(Window w) {
Client *c;
for(c = clients; c; c = c->next)
if(c->win == w)
return c;
return NULL;
}
void
killclient(Arg *arg) {
if(!sel)
return;
if(sel->proto & PROTODELWIN)
sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
else
XKillClient(dpy, sel->win);
}
void
manage(Window w, XWindowAttributes *wa) {
Client *c;
Window trans;
c = emallocz(sizeof(Client));
c->tags = emallocz(ntags * sizeof(Bool));
c->win = w;
c->x = wa->x;
c->y = wa->y;
c->w = wa->width;
c->h = wa->height;
if(c->w == sw && c->h == sh) {
c->border = 0;
c->x = sx;
c->y = sy;
}
else {
c->border = BORDERPX;
if(c->x + c->w + 2 * c->border > wax + waw)
c->x = wax + waw - c->w - 2 * c->border;
if(c->y + c->h + 2 * c->border > way + wah)
c->y = way + wah - c->h - 2 * c->border;
if(c->x < wax)
c->x = wax;
if(c->y < way)
c->y = way;
}
updatesizehints(c);
c->proto = getproto(c->win);
XSelectInput(dpy, c->win,
StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
XGetTransientForHint(dpy, c->win, &trans);
grabbuttons(c, False);
XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
updatetitle(c);
settags(c, getclient(trans));
if(!c->isfloat)
c->isfloat = trans || c->isfixed;
if(clients)
clients->prev = c;
c->next = clients;
c->snext = stack;
stack = clients = c;
XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
XMapWindow(dpy, c->win);
if(isvisible(c))
focus(c);
arrange();
}
void
resize(Client *c, Bool sizehints) {
XWindowChanges wc;
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->w == sw && c->h == sh)
c->border = 0;
else
c->border = BORDERPX;
/* offscreen appearance fixes */
if(c->x > sw)
c->x = sw - c->w - 2 * c->border;
if(c->y > sh)
c->y = sh - c->h - 2 * c->border;
if(c->x + c->w + 2 * c->border < sx)
c->x = sx;
if(c->y + c->h + 2 * c->border < sy)
c->y = sy;
wc.x = c->x;
wc.y = c->y;
wc.width = c->w;
wc.height = c->h;
wc.border_width = c->border;
XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
configure(c);
XSync(dpy, False);
}
void
updatesizehints(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;
c->isfixed = (c->maxw && c->minw && c->maxh && c->minh &&
c->maxw == c->minw && c->maxh == c->minh);
}
void
updatetitle(Client *c) {
char **list = NULL;
int n;
XTextProperty name;
name.nitems = 0;
c->name[0] = 0;
XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
if(!name.nitems)
XGetWMName(dpy, c->win, &name);
if(!name.nitems)
return;
if(name.encoding == XA_STRING)
strncpy(c->name, (char *)name.value, sizeof c->name);
else {
if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
&& n > 0 && *list)
{
strncpy(c->name, *list, sizeof c->name);
XFreeStringList(list);
}
}
XFree(name.value);
}
void
unmanage(Client *c) {
Client *nc;
/* The server grab construct avoids race conditions. */
XGrabServer(dpy);
XSetErrorHandler(xerrordummy);
detach(c);
detachstack(c);
if(sel == c) {
for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
focus(nc);
}
XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
free(c->tags);
free(c);
XSync(dpy, False);
XSetErrorHandler(xerror);
XUngrabServer(dpy);
arrange();
}