client.c

   1 /* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
   2  * See LICENSE file for license details.
   3  */
   4 #include "dwm.h"
   5 #include <stdlib.h>
   6 #include <string.h>
   7 #include <X11/Xatom.h>
   8 #include <X11/Xutil.h>
   9
  10 /* static functions */
  11
  12 static void
  13 detachstack(Client *c) {
  14         Client **tc;
  15         for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
  16         *tc = c->snext;
  17 }
  18
  19 static void
  20 grabbuttons(Client *c, Bool focused) {
  21         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
  22
  23         if(focused) {
  24                 XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
  25                                 GrabModeAsync, GrabModeSync, None, None);
  26                 XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
  27                                 GrabModeAsync, GrabModeSync, None, None);
  28                 XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
  29                                 GrabModeAsync, GrabModeSync, None, None);
  30                 XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
  31                                 GrabModeAsync, GrabModeSync, None, None);
  32
  33                 XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
  34                                 GrabModeAsync, GrabModeSync, None, None);
  35                 XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
  36                                 GrabModeAsync, GrabModeSync, None, None);
  37                 XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
  38                                 GrabModeAsync, GrabModeSync, None, None);
  39                 XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
  40                                 GrabModeAsync, GrabModeSync, None, None);
  41
  42                 XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
  43                                 GrabModeAsync, GrabModeSync, None, None);
  44                 XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
  45                                 GrabModeAsync, GrabModeSync, None, None);
  46                 XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
  47                                 GrabModeAsync, GrabModeSync, None, None);
  48                 XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
  49                                 GrabModeAsync, GrabModeSync, None, None);
  50         }
  51         else
  52                 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
  53                                 GrabModeAsync, GrabModeSync, None, None);
  54 }
  55
  56 static int
  57 xerrordummy(Display *dsply, XErrorEvent *ee) {
  58         return 0;
  59 }
  60
  61 /* extern functions */
  62
  63 void
  64 configure(Client *c) {
  65         XEvent synev;
  66
  67         synev.type = ConfigureNotify;
  68         synev.xconfigure.display = dpy;
  69         synev.xconfigure.event = c->win;
  70         synev.xconfigure.window = c->win;
  71         synev.xconfigure.x = c->x;
  72         synev.xconfigure.y = c->y;
  73         synev.xconfigure.width = c->w;
  74         synev.xconfigure.height = c->h;
  75         synev.xconfigure.border_width = c->border;
  76         synev.xconfigure.above = None;
  77         XSendEvent(dpy, c->win, True, NoEventMask, &synev);
  78 }
  79
  80 void
  81 focus(Client *c) {
  82         Client *old = sel;
  83
  84         if(c && !isvisible(c))
  85                 return;
  86
  87         if(old && old != c) {
  88                 grabbuttons(old, False);
  89                 XSetWindowBorder(dpy, old->win, dc.norm[ColBorder]);
  90         }
  91         if(c) {
  92                 detachstack(c);
  93                 c->snext = stack;
  94                 stack = c;
  95                 grabbuttons(c, True);
  96                 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
  97                 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
  98         }
  99         else if(issel)
 100                 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 101         sel = c;
 102         drawstatus();
 103 }
 104
 105 Client *
 106 getclient(Window w) {
 107         Client *c;
 108
 109         for(c = clients; c; c = c->next)
 110                 if(c->win == w)
 111                         return c;
 112         return NULL;
 113 }
 114
 115 void
 116 killclient(Arg *arg) {
 117         if(!sel)
 118                 return;
 119         if(sel->proto & PROTODELWIN)
 120                 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
 121         else
 122                 XKillClient(dpy, sel->win);
 123 }
 124
 125 void
 126 manage(Window w, XWindowAttributes *wa) {
 127         Client *c;
 128         Window trans;
 129
 130         c = emallocz(sizeof(Client));
 131         c->tags = emallocz(ntags * sizeof(Bool));
 132         c->win = w;
 133         c->x = wa->x;
 134         c->y = wa->y;
 135         c->w = wa->width;
 136         c->h = wa->height;
 137         if(c->w == sw && c->h == sh) {
 138                 c->border = 0;
 139                 c->x = sx;
 140                 c->y = sy;
 141         }
 142         else {
 143                 c->border = BORDERPX;
 144                 if(c->x < wax)
 145                         c->x = wax;
 146                 if(c->y < way)
 147                         c->y = way;
 148                 if(c->x + c->w + 2 * c->border > wax + waw)
 149                         c->x = wax + waw - c->w - 2 * c->border;
 150                 if(c->y + c->h + 2 * c->border > way + wah)
 151                         c->y = way + wah - c->h - 2 * c->border;
 152         }
 153         updatesizehints(c);
 154         c->proto = getproto(c->win);
 155         XSelectInput(dpy, c->win,
 156                 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 157         XGetTransientForHint(dpy, c->win, &trans);
 158         grabbuttons(c, False);
 159         updatetitle(c);
 160         settags(c, getclient(trans));
 161         if(!c->isfloat)
 162                 c->isfloat = trans || c->isfixed;
 163         if(clients)
 164                 clients->prev = c;
 165         c->next = clients;
 166         c->snext = stack;
 167         stack = clients = c;
 168         XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
 169         XMapWindow(dpy, c->win);
 170         if(isvisible(c))
 171                 focus(c);
 172         arrange();
 173 }
 174
 175 void
 176 resize(Client *c, Bool sizehints) {
 177         XWindowChanges wc;
 178
 179         if(sizehints) {
 180                 if(c->incw)
 181                         c->w -= (c->w - c->basew) % c->incw;
 182                 if(c->inch)
 183                         c->h -= (c->h - c->baseh) % c->inch;
 184                 if(c->minw && c->w < c->minw)
 185                         c->w = c->minw;
 186                 if(c->minh && c->h < c->minh)
 187                         c->h = c->minh;
 188                 if(c->maxw && c->w > c->maxw)
 189                         c->w = c->maxw;
 190                 if(c->maxh && c->h > c->maxh)
 191                         c->h = c->maxh;
 192         }
 193         if(c->w == sw && c->h == sh)
 194                 c->border = 0;
 195         else
 196                 c->border = BORDERPX;
 197         /* offscreen appearance fixes */
 198         if(c->x + c->w + 2 * c->border < sx)
 199                 c->x = sx;
 200         if(c->y + c->h + 2 * c->border < sy)
 201                 c->y = sy;
 202         if(c->x > sw)
 203                 c->x = sw - c->w - 2 * c->border;
 204         if(c->y > sh)
 205                 c->y = sh - c->h - 2 * c->border;
 206         wc.x = c->x;
 207         wc.y = c->y;
 208         wc.width = c->w;
 209         wc.height = c->h;
 210         wc.border_width = c->border;
 211         XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
 212         configure(c);
 213         XSync(dpy, False);
 214 }
 215
 216 void
 217 updatesizehints(Client *c) {
 218         long msize;
 219         XSizeHints size;
 220
 221         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 222                 size.flags = PSize;
 223         c->flags = size.flags;
 224         if(c->flags & PBaseSize) {
 225                 c->basew = size.base_width;
 226                 c->baseh = size.base_height;
 227         }
 228         else
 229                 c->basew = c->baseh = 0;
 230         if(c->flags & PResizeInc) {
 231                 c->incw = size.width_inc;
 232                 c->inch = size.height_inc;
 233         }
 234         else
 235                 c->incw = c->inch = 0;
 236         if(c->flags & PMaxSize) {
 237                 c->maxw = size.max_width;
 238                 c->maxh = size.max_height;
 239         }
 240         else
 241                 c->maxw = c->maxh = 0;
 242         if(c->flags & PMinSize) {
 243                 c->minw = size.min_width;
 244                 c->minh = size.min_height;
 245         }
 246         else
 247                 c->minw = c->minh = 0;
 248         c->isfixed = (c->maxw && c->minw && c->maxh && c->minh &&
 249                                 c->maxw == c->minw && c->maxh == c->minh);
 250 }
 251
 252 void
 253 updatetitle(Client *c) {
 254         char **list = NULL;
 255         int n;
 256         XTextProperty name;
 257
 258         name.nitems = 0;
 259         c->name[0] = 0;
 260         XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
 261         if(!name.nitems)
 262                 XGetWMName(dpy, c->win, &name);
 263         if(!name.nitems)
 264                 return;
 265         if(name.encoding == XA_STRING)
 266                 strncpy(c->name, (char *)name.value, sizeof c->name);
 267         else {
 268                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 269                                 && n > 0 && *list)
 270                 {
 271                         strncpy(c->name, *list, sizeof c->name);
 272                         XFreeStringList(list);
 273                 }
 274         }
 275         XFree(name.value);
 276 }
 277
 278 void
 279 unmanage(Client *c) {
 280         Client *nc;
 281
 282         /* The server grab construct avoids race conditions. */
 283         XGrabServer(dpy);
 284         XSetErrorHandler(xerrordummy);
 285         detach(c);
 286         detachstack(c);
 287         if(sel == c) {
 288                 for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
 289                 focus(nc);
 290         }
 291         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 292         free(c->tags);
 293         free(c);
 294         XSync(dpy, False);
 295         XSetErrorHandler(xerror);
 296         XUngrabServer(dpy);
 297         arrange();
 298 }