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 #define CLIENT_MASK             (StructureNotifyMask | PropertyChangeMask | EnterWindowMask)
  14
  15 void
  16 update_name(Client *c)
  17 {
  18         XTextProperty name;
  19         int n;
  20         char **list = NULL;
  21
  22         name.nitems = 0;
  23         c->name[0] = 0;
  24         XGetTextProperty(dpy, c->win, &name, net_atom[NetWMName]);
  25         if(!name.nitems)
  26                 XGetWMName(dpy, c->win, &name);
  27         if(!name.nitems)
  28                 return;
  29         if(name.encoding == XA_STRING)
  30                 strncpy(c->name, (char *)name.value, sizeof(c->name));
  31         else {
  32                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
  33                                 && n > 0 && *list)
  34                 {
  35                         strncpy(c->name, *list, sizeof(c->name));
  36                         XFreeStringList(list);
  37                 }
  38         }
  39         XFree(name.value);
  40         if(c == stack)
  41                 draw_bar();
  42         else
  43                 draw_client(c);
  44 }
  45
  46 void
  47 focus(Client *c)
  48 {
  49         Client **l;
  50         for(l=&stack; *l && *l != c; l=&(*l)->snext);
  51         eassert(*l == c);
  52         *l = c->snext;
  53         c->snext = stack;
  54         stack = c;
  55         XRaiseWindow(dpy, c->win);
  56         XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
  57         XFlush(dpy);
  58 }
  59
  60 void
  61 manage(Window w, XWindowAttributes *wa)
  62 {
  63         Client *c, **l;
  64         XSetWindowAttributes twa;
  65         long msize;
  66
  67         c = emallocz(sizeof(Client));
  68         c->win = w;
  69         c->r[RFloat].x = wa->x;
  70         c->r[RFloat].y = wa->y;
  71         c->r[RFloat].width = wa->width;
  72         c->r[RFloat].height = wa->height;
  73         XSetWindowBorderWidth(dpy, c->win, 1);
  74         XSelectInput(dpy, c->win, CLIENT_MASK);
  75         XGetTransientForHint(dpy, c->win, &c->trans);
  76         if(!XGetWMNormalHints(dpy, c->win, &c->size, &msize) || !c->size.flags)
  77                 c->size.flags = PSize;
  78         c->fixedsize =
  79                 (c->size.flags & PMinSize && c->size.flags & PMaxSize
  80                  && c->size.min_width == c->size.max_width
  81                  && c->size.min_height == c->size.max_height);
  82         update_name(c);
  83         twa.override_redirect = 1;
  84         twa.background_pixmap = ParentRelative;
  85         twa.event_mask = ExposureMask;
  86
  87         c->title = XCreateWindow(dpy, root, c->r[RFloat].x, c->r[RFloat].y,
  88                         c->r[RFloat].width, barrect.height, 0,
  89                         DefaultDepth(dpy, screen), CopyFromParent,
  90                         DefaultVisual(dpy, screen),
  91                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
  92
  93         for(l=&clients; *l; l=&(*l)->next);
  94         c->next = *l; /* *l == nil */
  95         *l = c;
  96         c->snext = stack;
  97         stack = c;
  98         XMapWindow(dpy, c->win);
  99         XGrabButton(dpy, Button1, Mod1Mask, c->win, False, ButtonPressMask,
 100                         GrabModeAsync, GrabModeSync, None, None);
 101         XGrabButton(dpy, Button2, Mod1Mask, c->win, False, ButtonPressMask,
 102                         GrabModeAsync, GrabModeSync, None, None);
 103         XGrabButton(dpy, Button3, Mod1Mask, c->win, False, ButtonPressMask,
 104                         GrabModeAsync, GrabModeSync, None, None);
 105         focus(c);
 106 }
 107
 108 void
 109 resize(Client *c)
 110 {
 111         XConfigureEvent e;
 112
 113         XMoveResizeWindow(dpy, c->win, c->r[RFloat].x, c->r[RFloat].y,
 114                         c->r[RFloat].width, c->r[RFloat].height);
 115         e.type = ConfigureNotify;
 116         e.event = c->win;
 117         e.window = c->win;
 118         e.x = c->r[RFloat].x;
 119         e.y = c->r[RFloat].y;
 120         e.width = c->r[RFloat].width;
 121         e.height = c->r[RFloat].height;
 122         e.border_width = 0;
 123         e.above = None;
 124         e.override_redirect = False;
 125         XSelectInput(dpy, c->win, CLIENT_MASK & ~StructureNotifyMask);
 126         XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
 127         XSelectInput(dpy, c->win, CLIENT_MASK);
 128         XFlush(dpy);
 129 }
 130
 131 static int
 132 dummy_error_handler(Display *dpy, XErrorEvent *error)
 133 {
 134         return 0;
 135 }
 136
 137 void
 138 unmanage(Client *c)
 139 {
 140         Client **l;
 141
 142         XGrabServer(dpy);
 143         XSetErrorHandler(dummy_error_handler);
 144
 145         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 146         XUnmapWindow(dpy, c->win);
 147         XDestroyWindow(dpy, c->title);
 148
 149         for(l=&clients; *l && *l != c; l=&(*l)->next);
 150         eassert(*l == c);
 151         *l = c->next;
 152         for(l=&stack; *l && *l != c; l=&(*l)->snext);
 153         eassert(*l == c);
 154         *l = c->snext;
 155         free(c);
 156
 157         XFlush(dpy);
 158         XSetErrorHandler(error_handler);
 159         XUngrabServer(dpy);
 160         discard_events(EnterWindowMask);
 161         if(stack)
 162                 focus(stack);
 163 }
 164
 165
 166 Client *
 167 getclient(Window w)
 168 {
 169         Client *c;
 170         for(c = clients; c; c = c->next)
 171                 if(c->win == w)
 172                         return c;
 173         return NULL;
 174 }
 175
 176 void
 177 draw_client(Client *c)
 178 {
 179
 180
 181
 182 }