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         if(c && !isvisible(c))
  83                 return;
  84         if(sel && sel != c) {
  85                 grabbuttons(sel, False);
  86                 XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
  87         }
  88         sel = c;
  89         if(!issel)
  90                 return;
  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
 100                 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 101         drawstatus();
 102 }
 103
 104 Client *
 105 getclient(Window w) {
 106         Client *c;
 107
 108         for(c = clients; c; c = c->next)
 109                 if(c->win == w)
 110                         return c;
 111         return NULL;
 112 }
 113
 114 void
 115 killclient(Arg *arg) {
 116         if(!sel)
 117                 return;
 118         if(sel->proto & PROTODELWIN)
 119                 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
 120         else
 121                 XKillClient(dpy, sel->win);
 122 }
 123
 124 void
 125 manage(Window w, XWindowAttributes *wa) {
 126         Client *c;
 127         Window trans;
 128
 129         c = emallocz(sizeof(Client));
 130         c->tags = emallocz(ntags * sizeof(Bool));
 131         c->win = w;
 132         c->x = wa->x;
 133         c->y = wa->y;
 134         c->w = wa->width;
 135         c->h = wa->height;
 136         if(c->w == sw && c->h == sh) {
 137                 c->border = 0;
 138                 c->x = sx;
 139                 c->y = sy;
 140         }
 141         else {
 142                 c->border = BORDERPX;
 143                 if(c->x < wax)
 144                         c->x = wax;
 145                 if(c->y < way)
 146                         c->y = way;
 147                 if(c->x + c->w + 2 * c->border > wax + waw)
 148                         c->x = wax + waw - c->w - 2 * c->border;
 149                 if(c->y + c->h + 2 * c->border > way + wah)
 150                         c->y = way + wah - c->h - 2 * c->border;
 151         }
 152         updatesizehints(c);
 153         c->proto = getproto(c->win);
 154         XSelectInput(dpy, c->win,
 155                 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 156         XGetTransientForHint(dpy, c->win, &trans);
 157         grabbuttons(c, False);
 158         updatetitle(c);
 159         settags(c, getclient(trans));
 160         if(!c->isfloat)
 161                 c->isfloat = trans || c->isfixed;
 162         if(clients)
 163                 clients->prev = c;
 164         c->next = clients;
 165         c->snext = stack;
 166         stack = clients = c;
 167         XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
 168         XMapWindow(dpy, c->win);
 169         if(isvisible(c))
 170                 focus(c);
 171         arrange();
 172 }
 173
 174 void
 175 resize(Client *c, Bool sizehints) {
 176         XWindowChanges wc;
 177
 178         if(sizehints) {
 179                 if(c->incw)
 180                         c->w -= (c->w - c->basew) % c->incw;
 181                 if(c->inch)
 182                         c->h -= (c->h - c->baseh) % c->inch;
 183                 if(c->minw && c->w < c->minw)
 184                         c->w = c->minw;
 185                 if(c->minh && c->h < c->minh)
 186                         c->h = c->minh;
 187                 if(c->maxw && c->w > c->maxw)
 188                         c->w = c->maxw;
 189                 if(c->maxh && c->h > c->maxh)
 190                         c->h = c->maxh;
 191         }
 192         if(c->w == sw && c->h == sh)
 193                 c->border = 0;
 194         else
 195                 c->border = BORDERPX;
 196         /* offscreen appearance fixes */
 197         if(c->x + c->w + 2 * c->border < sx)
 198                 c->x = sx;
 199         if(c->y + c->h + 2 * c->border < sy)
 200                 c->y = sy;
 201         if(c->x > sw)
 202                 c->x = sw - c->w - 2 * c->border;
 203         if(c->y > sh)
 204                 c->y = sh - c->h - 2 * c->border;
 205         wc.x = c->x;
 206         wc.y = c->y;
 207         wc.width = c->w;
 208         wc.height = c->h;
 209         wc.border_width = c->border;
 210         XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
 211         configure(c);
 212         XSync(dpy, False);
 213 }
 214
 215 void
 216 updatesizehints(Client *c) {
 217         long msize;
 218         XSizeHints size;
 219
 220         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
 221                 size.flags = PSize;
 222         c->flags = size.flags;
 223         if(c->flags & PBaseSize) {
 224                 c->basew = size.base_width;
 225                 c->baseh = size.base_height;
 226         }
 227         else
 228                 c->basew = c->baseh = 0;
 229         if(c->flags & PResizeInc) {
 230                 c->incw = size.width_inc;
 231                 c->inch = size.height_inc;
 232         }
 233         else
 234                 c->incw = c->inch = 0;
 235         if(c->flags & PMaxSize) {
 236                 c->maxw = size.max_width;
 237                 c->maxh = size.max_height;
 238         }
 239         else
 240                 c->maxw = c->maxh = 0;
 241         if(c->flags & PMinSize) {
 242                 c->minw = size.min_width;
 243                 c->minh = size.min_height;
 244         }
 245         else
 246                 c->minw = c->minh = 0;
 247         c->isfixed = (c->maxw && c->minw && c->maxh && c->minh &&
 248                                 c->maxw == c->minw && c->maxh == c->minh);
 249 }
 250
 251 void
 252 updatetitle(Client *c) {
 253         char **list = NULL;
 254         int n;
 255         XTextProperty name;
 256
 257         name.nitems = 0;
 258         c->name[0] = 0;
 259         XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
 260         if(!name.nitems)
 261                 XGetWMName(dpy, c->win, &name);
 262         if(!name.nitems)
 263                 return;
 264         if(name.encoding == XA_STRING)
 265                 strncpy(c->name, (char *)name.value, sizeof c->name);
 266         else {
 267                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
 268                                 && n > 0 && *list)
 269                 {
 270                         strncpy(c->name, *list, sizeof c->name);
 271                         XFreeStringList(list);
 272                 }
 273         }
 274         XFree(name.value);
 275 }
 276
 277 void
 278 unmanage(Client *c) {
 279         Client *nc;
 280
 281         /* The server grab construct avoids race conditions. */
 282         XGrabServer(dpy);
 283         XSetErrorHandler(xerrordummy);
 284         detach(c);
 285         detachstack(c);
 286         if(sel == c) {
 287                 for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
 288                 focus(nc);
 289         }
 290         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 291         free(c->tags);
 292         free(c);
 293         XSync(dpy, False);
 294         XSetErrorHandler(xerror);
 295         XUngrabServer(dpy);
 296         arrange();
 297 }