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 resize_title(Client *c)
  15 {
  16         c->tw = textw(&brush.font, c->name) + bh;
  17         if(c->tw > c->w)
  18                 c->tw = c->w + 2;
  19         c->tx = c->x + c->w - c->tw + 2;
  20         c->ty = c->y;
  21         XMoveResizeWindow(dpy, c->title, c->tx, c->ty, c->tw, c->th);
  22 }
  23
  24 void
  25 update_name(Client *c)
  26 {
  27         XTextProperty name;
  28         int n;
  29         char **list = NULL;
  30
  31         name.nitems = 0;
  32         c->name[0] = 0;
  33         XGetTextProperty(dpy, c->win, &name, net_atom[NetWMName]);
  34         if(!name.nitems)
  35                 XGetWMName(dpy, c->win, &name);
  36         if(!name.nitems)
  37                 return;
  38         if(name.encoding == XA_STRING)
  39                 strncpy(c->name, (char *)name.value, sizeof(c->name));
  40         else {
  41                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
  42                                 && n > 0 && *list)
  43                 {
  44                         strncpy(c->name, *list, sizeof(c->name));
  45                         XFreeStringList(list);
  46                 }
  47         }
  48         XFree(name.value);
  49         resize_title(c);
  50 }
  51
  52 void
  53 update_size(Client *c)
  54 {
  55         XSizeHints size;
  56         long msize;
  57         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
  58                 size.flags = PSize;
  59         c->flags = size.flags;
  60         if(c->flags & PBaseSize) {
  61                 c->basew = size.base_width;
  62                 c->baseh = size.base_height;
  63         }
  64         else
  65                 c->basew = c->baseh = 0;
  66         if(c->flags & PResizeInc) {
  67                 c->incw = size.width_inc;
  68                 c->inch = size.height_inc;
  69         }
  70         else
  71                 c->incw = c->inch = 0;
  72         if(c->flags & PMaxSize) {
  73                 c->maxw = size.max_width;
  74                 c->maxh = size.max_height;
  75         }
  76         else
  77                 c->maxw = c->maxh = 0;
  78         if(c->flags & PMinSize) {
  79                 c->minw = size.min_width;
  80                 c->minh = size.min_height;
  81         }
  82         else
  83                 c->minw = c->minh = 0;
  84 }
  85
  86 void
  87 raise(Client *c)
  88 {
  89         XRaiseWindow(dpy, c->win);
  90         XRaiseWindow(dpy, c->title);
  91 }
  92
  93 void
  94 lower(Client *c)
  95 {
  96         XLowerWindow(dpy, c->title);
  97         XLowerWindow(dpy, c->win);
  98 }
  99
 100 void
 101 focus(Client *c)
 102 {
 103         Client **l, *old;
 104
 105         old = stack;
 106         for(l = &stack; *l && *l != c; l = &(*l)->snext);
 107         eassert(*l == c);
 108         *l = c->snext;
 109         c->snext = stack;
 110         stack = c;
 111         if(old && old != c) {
 112                 XMapWindow(dpy, old->title);
 113                 draw_client(old);
 114         }
 115         XUnmapWindow(dpy, c->title);
 116         draw_client(old);
 117         XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
 118         XFlush(dpy);
 119 }
 120
 121 void
 122 manage(Window w, XWindowAttributes *wa)
 123 {
 124         Client *c, **l;
 125         XSetWindowAttributes twa;
 126
 127         c = emallocz(sizeof(Client));
 128         c->win = w;
 129         c->tx = c->x = wa->x;
 130         c->ty = c->y = wa->y;
 131         if(c->y < bh)
 132                 c->ty = c->y += bh;
 133         c->tw = c->w = wa->width;
 134         c->h = wa->height;
 135         c->th = bh;
 136         update_size(c);
 137         XSetWindowBorderWidth(dpy, c->win, 1);
 138         XSetWindowBorder(dpy, c->win, brush.border);
 139         XSelectInput(dpy, c->win,
 140                         StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
 141         XGetTransientForHint(dpy, c->win, &c->trans);
 142         twa.override_redirect = 1;
 143         twa.background_pixmap = ParentRelative;
 144         twa.event_mask = ExposureMask;
 145
 146         c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
 147                         0, DefaultDepth(dpy, screen), CopyFromParent,
 148                         DefaultVisual(dpy, screen),
 149                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
 150         update_name(c);
 151
 152         for(l=&clients; *l; l=&(*l)->next);
 153         c->next = *l; /* *l == nil */
 154         *l = c;
 155         c->snext = stack;
 156         stack = c;
 157         XMapRaised(dpy, c->win);
 158         XMapRaised(dpy, c->title);
 159         XGrabButton(dpy, Button1, Mod1Mask, c->win, False, ButtonPressMask,
 160                         GrabModeAsync, GrabModeSync, None, None);
 161         XGrabButton(dpy, Button2, Mod1Mask, c->win, False, ButtonPressMask,
 162                         GrabModeAsync, GrabModeSync, None, None);
 163         XGrabButton(dpy, Button3, Mod1Mask, c->win, False, ButtonPressMask,
 164                         GrabModeAsync, GrabModeSync, None, None);
 165         resize(c);
 166         focus(c);
 167 }
 168
 169 void
 170 resize(Client *c)
 171 {
 172         XConfigureEvent e;
 173
 174         resize_title(c);
 175         XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
 176         e.type = ConfigureNotify;
 177         e.event = c->win;
 178         e.window = c->win;
 179         e.x = c->x;
 180         e.y = c->y;
 181         e.width = c->w;
 182         e.height = c->h;
 183         e.border_width = 0;
 184         e.above = None;
 185         e.override_redirect = False;
 186         XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&e);
 187         XFlush(dpy);
 188 }
 189
 190 static int
 191 dummy_error_handler(Display *dpy, XErrorEvent *error)
 192 {
 193         return 0;
 194 }
 195
 196 void
 197 unmanage(Client *c)
 198 {
 199         Client **l;
 200
 201         XGrabServer(dpy);
 202         XSetErrorHandler(dummy_error_handler);
 203
 204         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
 205         XDestroyWindow(dpy, c->title);
 206
 207         for(l=&clients; *l && *l != c; l=&(*l)->next);
 208         eassert(*l == c);
 209         *l = c->next;
 210         for(l=&stack; *l && *l != c; l=&(*l)->snext);
 211         eassert(*l == c);
 212         *l = c->snext;
 213         free(c);
 214
 215         XFlush(dpy);
 216         XSetErrorHandler(error_handler);
 217         XUngrabServer(dpy);
 218         if(stack)
 219                 focus(stack);
 220 }
 221
 222 Client *
 223 gettitle(Window w)
 224 {
 225         Client *c;
 226         for(c = clients; c; c = c->next)
 227                 if(c->title == w)
 228                         return c;
 229         return NULL;
 230 }
 231
 232 Client *
 233 getclient(Window w)
 234 {
 235         Client *c;
 236         for(c = clients; c; c = c->next)
 237                 if(c->win == w)
 238                         return c;
 239         return NULL;
 240 }
 241
 242 void
 243 draw_client(Client *c)
 244 {
 245         if(c == stack) {
 246                 draw_bar();
 247                 return;
 248         }
 249
 250         brush.x = brush.y = 0;
 251         brush.w = c->tw;
 252         brush.h = c->th;
 253
 254         draw(dpy, &brush, True, c->name);
 255         XCopyArea(dpy, brush.drawable, c->title, brush.gc,
 256                         0, 0, c->tw, c->th, 0, 0);
 257         XFlush(dpy);
 258 }