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 update_size(Client *c)
  48 {
  49         XSizeHints size;
  50         long msize;
  51         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
  52                 size.flags = PSize;
  53         c->flags = size.flags;
  54         c->basew = size.base_width;
  55         c->baseh = size.base_height;
  56         c->incw = size.width_inc;
  57         c->inch = size.height_inc;
  58         c->maxw = size.max_width;
  59         c->maxh = size.max_height;
  60         c->minw = size.min_width;
  61         c->minh = size.min_height;
  62 }
  63
  64 void
  65 focus(Client *c)
  66 {
  67         Client **l;
  68         for(l=&stack; *l && *l != c; l=&(*l)->snext);
  69         eassert(*l == c);
  70         *l = c->snext;
  71         c->snext = stack;
  72         stack = c;
  73         XRaiseWindow(dpy, c->win);
  74         XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
  75         XFlush(dpy);
  76 }
  77
  78 void
  79 manage(Window w, XWindowAttributes *wa)
  80 {
  81         Client *c, **l;
  82         XSetWindowAttributes twa;
  83
  84         c = emallocz(sizeof(Client));
  85         c->win = w;
  86         c->x = wa->x;
  87         c->y = wa->y;
  88         c->w = wa->width;
  89         c->h = wa->height;
  90         update_size(c);
  91         XSetWindowBorderWidth(dpy, c->win, 1);
  92         XSelectInput(dpy, c->win, CLIENT_MASK);
  93         XGetTransientForHint(dpy, c->win, &c->trans);
  94         update_name(c);
  95         twa.override_redirect = 1;
  96         twa.background_pixmap = ParentRelative;
  97         twa.event_mask = ExposureMask;
  98
  99         c->title = XCreateWindow(dpy, root, c->x, c->y, c->w, barrect.height,
 100                         0, DefaultDepth(dpy, screen), CopyFromParent,
 101                         DefaultVisual(dpy, screen),
 102                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 103
 104         for(l=&clients; *l; l=&(*l)->next);
 105         c->next = *l; /* *l == nil */
 106         *l = c;
 107         c->snext = stack;
 108         stack = c;
 109         XMapWindow(dpy, c->win);
 110         XGrabButton(dpy, Button1, Mod1Mask, c->win, False, ButtonPressMask,
 111                         GrabModeAsync, GrabModeSync, None, None);
 112         XGrabButton(dpy, Button2, Mod1Mask, c->win, False, ButtonPressMask,
 113                         GrabModeAsync, GrabModeSync, None, None);
 114         XGrabButton(dpy, Button3, Mod1Mask, c->win, False, ButtonPressMask,
 115                         GrabModeAsync, GrabModeSync, None, None);
 116         focus(c);
 117 }
 118
 119 void
 120 resize(Client *c)
 121 {
 122         XConfigureEvent e;
 123
 124         XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
 125         e.type = ConfigureNotify;
 126         e.event = c->win;
 127         e.window = c->win;
 128         e.x = c->x;
 129         e.y = c->y;
 130         e.width = c->w;
 131         e.height = c->h;
 132         e.border_width = 0;
 133         e.above = None;
 134         e.override_redirect = False;
 135         XSelectInput(dpy, c->win, CLIENT_MASK & ~StructureNotifyMask);
 136         XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
 137         XSelectInput(dpy, c->win, CLIENT_MASK);
 138         XFlush(dpy);
 139 }
 140
 141 static int
 142 dummy_error_handler(Display *dpy, XErrorEvent *error)
 143 {
 144         return 0;
 145 }
 146
 147 void
 148 unmanage(Client *c)
 149 {
 150         Client **l;
 151
 152         XGrabServer(dpy);
 153         XSetErrorHandler(dummy_error_handler);
 154
 155         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 156         XUnmapWindow(dpy, c->win);
 157         XDestroyWindow(dpy, c->title);
 158
 159         for(l=&clients; *l && *l != c; l=&(*l)->next);
 160         eassert(*l == c);
 161         *l = c->next;
 162         for(l=&stack; *l && *l != c; l=&(*l)->snext);
 163         eassert(*l == c);
 164         *l = c->snext;
 165         free(c);
 166
 167         XFlush(dpy);
 168         XSetErrorHandler(error_handler);
 169         XUngrabServer(dpy);
 170         discard_events(EnterWindowMask);
 171         if(stack)
 172                 focus(stack);
 173 }
 174
 175
 176 Client *
 177 getclient(Window w)
 178 {
 179         Client *c;
 180         for(c = clients; c; c = c->next)
 181                 if(c->win == w)
 182                         return c;
 183         return NULL;
 184 }
 185
 186 void
 187 draw_client(Client *c)
 188 {
 189
 190
 191
 192 }