client.c

   1 /*
   2  * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
   3  * See LICENSE file for license details.
   4  */
   5
   6 #include <stdlib.h>
   7 #include <string.h>
   8 #include <X11/Xatom.h>
   9
  10 #include "util.h"
  11 #include "wm.h"
  12
  13 static void
  14 update_client_name(Client *c)
  15 {
  16         XTextProperty name;
  17         int n;
  18         char **list = NULL;
  19
  20         name.nitems = 0;
  21         c->name[0] = 0;
  22         XGetTextProperty(dpy, c->win, &name, net_atom[NetWMName]);
  23         if(!name.nitems)
  24                 XGetWMName(dpy, c->win, &name);
  25         if(!name.nitems)
  26                 return;
  27         if(name.encoding == XA_STRING)
  28                 strncpy(c->name, (char *)name.value, sizeof(c->name));
  29         else {
  30                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
  31                                 && n > 0 && *list)
  32                 {
  33                         strncpy(c->name, *list, sizeof(c->name));
  34                         XFreeStringList(list);
  35                 }
  36         }
  37         XFree(name.value);
  38 }
  39
  40 void
  41 manage(Window w, XWindowAttributes *wa)
  42 {
  43         Client *c, **l;
  44         XSetWindowAttributes twa;
  45         long msize;
  46
  47         c = emallocz(sizeof(Client));
  48         c->win = w;
  49         c->r[RFloat].x = wa->x;
  50         c->r[RFloat].y = wa->y;
  51         c->r[RFloat].width = wa->width;
  52         c->r[RFloat].height = wa->height;
  53         c->border = wa->border_width;
  54         XSetWindowBorderWidth(dpy, c->win, 0);
  55         XGetTransientForHint(dpy, c->win, &c->trans);
  56         if(!XGetWMNormalHints(dpy, c->win, &c->size, &msize) || !c->size.flags)
  57                 c->size.flags = PSize;
  58         c->fixedsize =
  59                 (c->size.flags & PMinSize && c->size.flags & PMaxSize
  60                  && c->size.min_width == c->size.max_width
  61                  && c->size.min_height == c->size.max_height);
  62         update_client_name(c);
  63         twa.override_redirect = 1;
  64         twa.background_pixmap = ParentRelative;
  65         twa.event_mask = ExposureMask;
  66
  67         c->title = XCreateWindow(dpy, root, c->r[RFloat].x, c->r[RFloat].y,
  68                         c->r[RFloat].width, barrect.height, 0,
  69                         DefaultDepth(dpy, screen), CopyFromParent,
  70                         DefaultVisual(dpy, screen),
  71                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
  72
  73         for(l=&clients; *l; l=&(*l)->next);
  74         c->next = *l; /* *l == nil */
  75         *l = c;
  76         XMapRaised(dpy, c->win);
  77         XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
  78         XFlush(dpy);
  79 }
  80
  81 static int
  82 dummy_error_handler(Display *dpy, XErrorEvent *error)
  83 {
  84         return 0;
  85 }
  86
  87 void
  88 unmanage(Client *c)
  89 {
  90         Client **l;
  91
  92         XGrabServer(dpy);
  93         XSetErrorHandler(dummy_error_handler);
  94
  95         XUnmapWindow(dpy, c->win);
  96         XDestroyWindow(dpy, c->title);
  97
  98         for(l=&clients; *l && *l != c; l=&(*l)->next);
  99         eassert(*l == c);
 100         *l = c->next;
 101         free(c);
 102
 103         XFlush(dpy);
 104         XSetErrorHandler(error_handler);
 105         XUngrabServer(dpy);
 106         /*flush_masked_events(EnterWindowMask); ? */
 107 }
 108
 109
 110 Client *
 111 getclient(Window w)
 112 {
 113         Client *c;
 114         for(c = clients; c; c = c->next)
 115                 if(c->win == w)
 116                         return c;
 117         return NULL;
 118 }