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 void
  14 update_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 focus(Client *c)
  42 {
  43         Client **l;
  44         for(l=&stack; *l && *l != c; l=&(*l)->snext);
  45         eassert(*l == c);
  46         *l = c->snext;
  47         c->snext = stack;
  48         stack = c;
  49         XRaiseWindow(dpy, c->win);
  50         XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
  51         XFlush(dpy);
  52 }
  53
  54 void
  55 manage(Window w, XWindowAttributes *wa)
  56 {
  57         Client *c, **l;
  58         XSetWindowAttributes twa;
  59         long msize;
  60
  61         c = emallocz(sizeof(Client));
  62         c->win = w;
  63         c->r[RFloat].x = wa->x;
  64         c->r[RFloat].y = wa->y;
  65         c->r[RFloat].width = wa->width;
  66         c->r[RFloat].height = wa->height;
  67         c->border = wa->border_width;
  68         XSetWindowBorderWidth(dpy, c->win, 0);
  69         XGetTransientForHint(dpy, c->win, &c->trans);
  70         if(!XGetWMNormalHints(dpy, c->win, &c->size, &msize) || !c->size.flags)
  71                 c->size.flags = PSize;
  72         c->fixedsize =
  73                 (c->size.flags & PMinSize && c->size.flags & PMaxSize
  74                  && c->size.min_width == c->size.max_width
  75                  && c->size.min_height == c->size.max_height);
  76         update_name(c);
  77         twa.override_redirect = 1;
  78         twa.background_pixmap = ParentRelative;
  79         twa.event_mask = ExposureMask;
  80
  81         c->title = XCreateWindow(dpy, root, c->r[RFloat].x, c->r[RFloat].y,
  82                         c->r[RFloat].width, barrect.height, 0,
  83                         DefaultDepth(dpy, screen), CopyFromParent,
  84                         DefaultVisual(dpy, screen),
  85                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
  86
  87         for(l=&clients; *l; l=&(*l)->next);
  88         c->next = *l; /* *l == nil */
  89         *l = c;
  90         c->snext = stack;
  91         stack = c;
  92         XMapWindow(dpy, c->win);
  93         focus(c);
  94 }
  95
  96 static int
  97 dummy_error_handler(Display *dpy, XErrorEvent *error)
  98 {
  99         return 0;
 100 }
 101
 102 void
 103 unmanage(Client *c)
 104 {
 105         Client **l;
 106
 107         XGrabServer(dpy);
 108         XSetErrorHandler(dummy_error_handler);
 109
 110         XUnmapWindow(dpy, c->win);
 111         XDestroyWindow(dpy, c->title);
 112
 113         for(l=&clients; *l && *l != c; l=&(*l)->next);
 114         eassert(*l == c);
 115         *l = c->next;
 116         for(l=&stack; *l && *l != c; l=&(*l)->snext);
 117         eassert(*l == c);
 118         *l = c->snext;
 119         free(c);
 120
 121         XFlush(dpy);
 122         XSetErrorHandler(error_handler);
 123         XUngrabServer(dpy);
 124         flush_events(EnterWindowMask);
 125 }
 126
 127
 128 Client *
 129 getclient(Window w)
 130 {
 131         Client *c;
 132         for(c = clients; c; c = c->next)
 133                 if(c->win == w)
 134                         return c;
 135         return NULL;
 136 }
 137