src/screen.cc

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2
   3 #ifdef HAVE_CONFIG_H
   4 # include "../config.h"
   5 #endif
   6
   7 extern "C" {
   8 #ifdef    HAVE_STDIO_H
   9 #  include <stdio.h>
  10 #endif // HAVE_STDIO_H
  11
  12 #ifdef    HAVE_UNISTD_H
  13 #  include <sys/types.h>
  14 #  include <unistd.h>
  15 #endif // HAVE_UNISTD_H
  16
  17 #include "gettext.h"
  18 #define _(str) gettext(str)
  19 }
  20
  21 #include "screen.hh"
  22 #include "client.hh"
  23 #include "openbox.hh"
  24 #include "frame.hh"
  25 #include "otk/display.hh"
  26
  27 static bool running;
  28 static int anotherWMRunning(Display *display, XErrorEvent *) {
  29   printf(_("Another window manager already running on display %s.\n"),
  30          DisplayString(display));
  31   running = true;
  32   return -1;
  33 }
  34
  35
  36 namespace ob {
  37
  38
  39 OBScreen::OBScreen(int screen, const otk::Configuration &config)
  40   : _number(screen)
  41 {
  42   assert(screen >= 0); assert(screen < ScreenCount(otk::OBDisplay::display));
  43   _info = otk::OBDisplay::screenInfo(screen);
  44
  45   ::running = false;
  46   XErrorHandler old = XSetErrorHandler(::anotherWMRunning);
  47   XSelectInput(otk::OBDisplay::display, _info->getRootWindow(),
  48                OBScreen::event_mask);
  49   XSync(otk::OBDisplay::display, false);
  50   XSetErrorHandler(old);
  51
  52   _managed = !::running;
  53   if (! _managed) return; // was unable to manage the screen
  54
  55   printf(_("Managing screen %d: visual 0x%lx, depth %d\n"),
  56          _number, XVisualIDFromVisual(_info->getVisual()), _info->getDepth());
  57
  58   Openbox::instance->property()->set(_info->getRootWindow(),
  59                                      otk::OBProperty::openbox_pid,
  60                                      otk::OBProperty::Atom_Cardinal,
  61                                      (unsigned long) getpid());
  62
  63   // set the mouse cursor for the root window (the default cursor)
  64   XDefineCursor(otk::OBDisplay::display, _info->getRootWindow(),
  65                 Openbox::instance->cursors().session);
  66
  67   // initialize the shit that is used for all drawing on the screen
  68   _image_control = new otk::BImageControl(Openbox::instance->timerManager(),
  69                                           _info, true);
  70   _image_control->installRootColormap();
  71   _root_cmap_installed = True;
  72
  73   // initialize the screen's style
  74   _style.setImageControl(_image_control);
  75   _style.load(config);
  76
  77
  78   // Set the netwm atoms for geomtery and viewport
  79   unsigned long geometry[] = { _size.x(),
  80                                _size.y() };
  81   Openbox::instance->property()->set(_info->getRootWindow(),
  82                                      otk::OBProperty::net_desktop_geometry,
  83                                      otk::OBProperty::Atom_Cardinal,
  84                                      geometry, 2);
  85   unsigned long viewport[] = { 0, 0 };
  86   Openbox::instance->property()->set(_info->getRootWindow(),
  87                                      otk::OBProperty::net_desktop_viewport,
  88                                      otk::OBProperty::Atom_Cardinal,
  89                                      viewport, 2);
  90
  91   // these may be further updated if any pre-existing windows are found in
  92   // the manageExising() function
  93   setClientList();     // initialize the client lists, which will be empty
  94   calcArea();          // initialize the available working area
  95
  96   manageExisting();
  97
  98   // XXX: "change to" the first workspace to initialize stuff
  99 }
 100
 101
 102 OBScreen::~OBScreen()
 103 {
 104   if (! _managed) return;
 105
 106   // unmanage all windows
 107   while (!_clients.empty())
 108     unmanageWindow(_clients[0]);
 109
 110   delete _image_control;
 111 }
 112
 113
 114 void OBScreen::manageExisting()
 115 {
 116   unsigned int i, j, nchild;
 117   Window r, p, *children;
 118   XQueryTree(otk::OBDisplay::display, _info->getRootWindow(), &r, &p,
 119              &children, &nchild);
 120
 121   // preen the window list of all icon windows... for better dockapp support
 122   for (i = 0; i < nchild; i++) {
 123     if (children[i] == None) continue;
 124
 125     XWMHints *wmhints = XGetWMHints(otk::OBDisplay::display,
 126                                     children[i]);
 127
 128     if (wmhints) {
 129       if ((wmhints->flags & IconWindowHint) &&
 130           (wmhints->icon_window != children[i])) {
 131         for (j = 0; j < nchild; j++) {
 132           if (children[j] == wmhints->icon_window) {
 133             children[j] = None;
 134             break;
 135           }
 136         }
 137       }
 138
 139       XFree(wmhints);
 140     }
 141   }
 142
 143   // manage shown windows
 144   for (i = 0; i < nchild; ++i) {
 145     if (children[i] == None)
 146       continue;
 147
 148     XWindowAttributes attrib;
 149     if (XGetWindowAttributes(otk::OBDisplay::display, children[i], &attrib)) {
 150       if (attrib.override_redirect) continue;
 151
 152       if (attrib.map_state != IsUnmapped) {
 153         manageWindow(children[i]);
 154       }
 155     }
 156   }
 157
 158   XFree(children);
 159 }
 160
 161
 162 //! Adds a window's strut to the screen's list of reserved spaces
 163 void OBScreen::addStrut(otk::Strut *strut)
 164 {
 165   _struts.push_back(strut);
 166 }
 167
 168
 169 //! Removes a window's strut from the screen's list of reserved spaces
 170 void OBScreen::removeStrut(otk::Strut *strut)
 171 {
 172   _struts.remove(strut);
 173 }
 174
 175
 176 void OBScreen::calcArea()
 177 {
 178   otk::Rect old_area = _area;
 179
 180 /*
 181 #ifdef    XINERAMA
 182   // reset to the full areas
 183   if (isXineramaActive())
 184     xineramaUsableArea = getXineramaAreas();
 185 #endif // XINERAMA
 186 */
 187
 188   /* these values represent offsets from the screen edge
 189    * we look for the biggest offset on each edge and then apply them
 190    * all at once
 191    * do not be confused by the similarity to the names of Rect's members
 192    */
 193   unsigned int current_left = 0, current_right = 0, current_top = 0,
 194     current_bottom = 0;
 195
 196   StrutList::const_iterator it = _struts.begin(), end = _struts.end();
 197
 198   for(; it != end; ++it) {
 199     otk::Strut *strut = *it;
 200     if (strut->left > current_left)
 201       current_left = strut->left;
 202     if (strut->top > current_top)
 203       current_top = strut->top;
 204     if (strut->right > current_right)
 205       current_right = strut->right;
 206     if (strut->bottom > current_bottom)
 207       current_bottom = strut->bottom;
 208   }
 209
 210   _area.setRect(current_left, current_top,
 211                 _info->getWidth() - (current_left + current_right),
 212                 _info->getHeight() - (current_top + current_bottom));
 213
 214 /*
 215 #ifdef    XINERAMA
 216   if (isXineramaActive()) {
 217     // keep each of the ximerama-defined areas inside the strut
 218     RectList::iterator xit, xend = xineramaUsableArea.end();
 219     for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
 220       if (xit->x() < usableArea.x()) {
 221         xit->setX(usableArea.x());
 222         xit->setWidth(xit->width() - usableArea.x());
 223       }
 224       if (xit->y() < usableArea.y()) {
 225         xit->setY(usableArea.y());
 226         xit->setHeight(xit->height() - usableArea.y());
 227       }
 228       if (xit->x() + xit->width() > usableArea.width())
 229         xit->setWidth(usableArea.width() - xit->x());
 230       if (xit->y() + xit->height() > usableArea.height())
 231         xit->setHeight(usableArea.height() - xit->y());
 232     }
 233   }
 234 #endif // XINERAMA
 235 */
 236
 237   if (old_area != _area)
 238     // XXX: re-maximize windows
 239
 240   setWorkArea();
 241 }
 242
 243
 244 void OBScreen::setClientList()
 245 {
 246   Window *windows;
 247
 248   // create an array of the window ids
 249   if (_clients.size() > 0) {
 250     Window *win_it;
 251
 252     windows = new Window[_clients.size()];
 253     win_it = windows;
 254     ClientList::const_iterator it = _clients.begin();
 255     const ClientList::const_iterator end = _clients.end();
 256     for (; it != end; ++it, ++win_it)
 257       *win_it = (*it)->window();
 258   } else
 259     windows = (Window*) 0;
 260
 261   Openbox::instance->property()->set(_info->getRootWindow(),
 262                                      otk::OBProperty::net_client_list,
 263                                      otk::OBProperty::Atom_Window,
 264                                      windows, _clients.size());
 265
 266   if (_clients.size())
 267     delete [] windows;
 268
 269   setStackingList();
 270 }
 271
 272
 273 void OBScreen::setStackingList()
 274 {
 275   // The below comment is wrong now hopefully :> but ill keep it here for
 276   // reference anyways
 277   /*
 278     Get the stacking order from all of the workspaces.
 279     We start with the current workspace so that the sticky windows will be
 280     in the right order on the current workspace.
 281   */
 282   /*
 283   Openbox::instance->property()->set(_info->getRootWindow(),
 284                                      otk::OBProperty::net_client_list_stacking,
 285                                      otk::OBProperty::Atom_Window,
 286                                      _stacking, _stacking.size());
 287   */
 288 }
 289
 290
 291 void OBScreen::setWorkArea() {
 292   unsigned long area[] = { _area.x(), _area.y(),
 293                            _area.width(), _area.height() };
 294   Openbox::instance->property()->set(_info->getRootWindow(),
 295                                      otk::OBProperty::net_workarea,
 296                                      otk::OBProperty::Atom_Cardinal,
 297                                      area, 4);
 298   /*
 299   if (workspacesList.size() > 0) {
 300     unsigned long *dims = new unsigned long[4 * workspacesList.size()];
 301     for (unsigned int i = 0, m = workspacesList.size(); i < m; ++i) {
 302       // XXX: this could be different for each workspace
 303       const otk::Rect &area = availableArea();
 304       dims[(i * 4) + 0] = area.x();
 305       dims[(i * 4) + 1] = area.y();
 306       dims[(i * 4) + 2] = area.width();
 307       dims[(i * 4) + 3] = area.height();
 308     }
 309     xatom->set(getRootWindow(), otk::OBProperty::net_workarea,
 310                otk::OBProperty::Atom_Cardinal,
 311                dims, 4 * workspacesList.size());
 312     delete [] dims;
 313   } else
 314     xatom->set(getRootWindow(), otk::OBProperty::net_workarea,
 315                otk::OBProperty::Atom_Cardinal, 0, 0);
 316   */
 317 }
 318
 319
 320 void OBScreen::loadStyle(const otk::Configuration &config)
 321 {
 322   _style.load(config);
 323
 324   // XXX: make stuff redraw!
 325 }
 326
 327
 328 void OBScreen::manageWindow(Window window)
 329 {
 330   OBClient *client = 0;
 331   XWMHints *wmhint;
 332   XSetWindowAttributes attrib_set;
 333
 334   // XXX: manage the window, i.e. grab events n shit
 335
 336   // is the window a docking app
 337   if ((wmhint = XGetWMHints(otk::OBDisplay::display, window))) {
 338     if ((wmhint->flags & StateHint) &&
 339         wmhint->initial_state == WithdrawnState) {
 340       //slit->addClient(w); // XXX: make dock apps work!
 341       XFree(wmhint);
 342       return;
 343     }
 344     XFree(wmhint);
 345   }
 346
 347   // choose the events we want to receive on the CLIENT window
 348   attrib_set.event_mask = OBClient::event_mask;
 349   attrib_set.do_not_propagate_mask = ButtonPressMask | ButtonReleaseMask |
 350                                      ButtonMotionMask;
 351   XChangeWindowAttributes(otk::OBDisplay::display, window,
 352                           CWEventMask|CWDontPropagate, &attrib_set);
 353
 354   // create the OBClient class, which gets all of the hints on the window
 355   Openbox::instance->addClient(window, client = new OBClient(_number, window));
 356
 357   // we dont want a border on the client
 358   XSetWindowBorderWidth(otk::OBDisplay::display, window, 0);
 359
 360   // specify that if we exit, the window should not be destroyed and should be
 361   // reparented back to root automatically
 362   XChangeSaveSet(otk::OBDisplay::display, window, SetModeInsert);
 363
 364   if (!client->positionRequested()) {
 365     // XXX: position the window intelligenty
 366   }
 367
 368   // create the decoration frame for the client window
 369   client->frame = new OBFrame(client, &_style);
 370
 371   // add all the client's decoration windows as event handlers for the client
 372   Openbox::instance->addClient(client->frame->window(), client);
 373   Openbox::instance->addClient(client->frame->titlebar(), client);
 374   Openbox::instance->addClient(client->frame->buttonIconify(), client);
 375   Openbox::instance->addClient(client->frame->buttonMax(), client);
 376   Openbox::instance->addClient(client->frame->buttonStick(), client);
 377   Openbox::instance->addClient(client->frame->buttonClose(), client);
 378   Openbox::instance->addClient(client->frame->label(), client);
 379   Openbox::instance->addClient(client->frame->handle(), client);
 380   Openbox::instance->addClient(client->frame->gripLeft(), client);
 381   Openbox::instance->addClient(client->frame->gripRight(), client);
 382
 383   // XXX: if on the current desktop..
 384   XMapWindow(otk::OBDisplay::display, client->frame->window());
 385
 386   // XXX: handle any requested states such as shaded/maximized
 387
 388
 389   _clients.push_back(client);
 390   setClientList();
 391 }
 392
 393
 394 void OBScreen::unmanageWindow(OBClient *client)
 395 {
 396   OBFrame *frame = client->frame;
 397
 398   // XXX: pass around focus if this window was focused
 399
 400   // remove the window from our save set
 401   XChangeSaveSet(otk::OBDisplay::display, client->window(), SetModeDelete);
 402
 403   // we dont want events no more
 404   XSelectInput(otk::OBDisplay::display, client->window(), NoEventMask);
 405
 406   XUnmapWindow(otk::OBDisplay::display, frame->window());
 407
 408   // we dont want a border on the client
 409   XSetWindowBorderWidth(otk::OBDisplay::display, client->window(),
 410                         client->borderWidth());
 411
 412   // remove the client class from the search list
 413   Openbox::instance->removeClient(client->window());
 414   // remove the frame's decor elements as event handlers for the client
 415   Openbox::instance->removeClient(frame->window());
 416   Openbox::instance->removeClient(frame->titlebar());
 417   Openbox::instance->removeClient(frame->buttonIconify());
 418   Openbox::instance->removeClient(frame->buttonMax());
 419   Openbox::instance->removeClient(frame->buttonStick());
 420   Openbox::instance->removeClient(frame->buttonClose());
 421   Openbox::instance->removeClient(frame->label());
 422   Openbox::instance->removeClient(frame->handle());
 423   Openbox::instance->removeClient(frame->gripLeft());
 424   Openbox::instance->removeClient(frame->gripRight());
 425
 426   delete client->frame;
 427   client->frame = 0;
 428
 429   ClientList::iterator it = _clients.begin(), end = _clients.end();
 430   for (; it != end; ++it)
 431     if (*it == client) {
 432       _clients.erase(it);
 433       break;
 434     }
 435   delete client;
 436
 437   setClientList();
 438 }
 439
 440 }