client and stacking list work
[mikachu/openbox.git] / 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 "bindings.hh"
26 #include "python.hh"
27 #include "otk/display.hh"
28
29 #include <vector>
30
31 static bool running;
32 static int anotherWMRunning(Display *display, XErrorEvent *) {
33   printf(_("Another window manager already running on display %s.\n"),
34          DisplayString(display));
35   running = true;
36   return -1;
37 }
38
39
40 namespace ob {
41
42
43 OBScreen::OBScreen(int screen)
44   : _number(screen),
45     _root(screen)
46 {
47   assert(screen >= 0); assert(screen < ScreenCount(otk::OBDisplay::display));
48   _info = otk::OBDisplay::screenInfo(screen);
49
50   ::running = false;
51   XErrorHandler old = XSetErrorHandler(::anotherWMRunning);
52   XSelectInput(otk::OBDisplay::display, _info->rootWindow(),
53                OBScreen::event_mask);
54   XSync(otk::OBDisplay::display, false);
55   XSetErrorHandler(old);
56
57   _managed = !::running;
58   if (! _managed) return; // was unable to manage the screen
59
60   printf(_("Managing screen %d: visual 0x%lx, depth %d\n"),
61          _number, XVisualIDFromVisual(_info->visual()), _info->depth());
62
63   Openbox::instance->property()->set(_info->rootWindow(),
64                                      otk::OBProperty::openbox_pid,
65                                      otk::OBProperty::Atom_Cardinal,
66                                      (unsigned long) getpid());
67
68   // set the mouse cursor for the root window (the default cursor)
69   XDefineCursor(otk::OBDisplay::display, _info->rootWindow(),
70                 Openbox::instance->cursors().session);
71
72   // initialize the shit that is used for all drawing on the screen
73   _image_control = new otk::BImageControl(Openbox::instance->timerManager(),
74                                           _info, true);
75   _image_control->installRootColormap();
76   _root_cmap_installed = True;
77
78   // initialize the screen's style
79   _style.setImageControl(_image_control);
80   std::string stylepath;
81   python_get_string("theme", &stylepath);
82   otk::Configuration sconfig(false);
83   sconfig.setFile(otk::expandTilde(stylepath));
84   if (!sconfig.load()) {
85     sconfig.setFile(otk::expandTilde(DEFAULTSTYLE));
86     if (!sconfig.load()) {
87       printf(_("Unable to load default style: %s. Aborting.\n"), DEFAULTSTYLE);
88       ::exit(1);
89     }
90   }
91   _style.load(sconfig);
92
93   // Set the netwm atoms for geomtery and viewport
94   unsigned long geometry[] = { _info->width(),
95                                _info->height() };
96   Openbox::instance->property()->set(_info->rootWindow(),
97                                      otk::OBProperty::net_desktop_geometry,
98                                      otk::OBProperty::Atom_Cardinal,
99                                      geometry, 2);
100   unsigned long viewport[] = { 0, 0 };
101   Openbox::instance->property()->set(_info->rootWindow(),
102                                      otk::OBProperty::net_desktop_viewport,
103                                      otk::OBProperty::Atom_Cardinal,
104                                      viewport, 2);
105
106   // create the window which gets focus when no clients get it
107   XSetWindowAttributes attr;
108   attr.override_redirect = true;
109   _focuswindow = XCreateWindow(otk::OBDisplay::display, _info->rootWindow(),
110                                -100, -100, 1, 1, 0, 0, InputOnly,
111                                _info->visual(), CWOverrideRedirect, &attr);
112   XMapWindow(otk::OBDisplay::display, _focuswindow);
113   
114   // these may be further updated if any pre-existing windows are found in
115   // the manageExising() function
116   setClientList();     // initialize the client lists, which will be empty
117   calcArea();          // initialize the available working area
118 }
119
120
121 OBScreen::~OBScreen()
122 {
123   if (! _managed) return;
124
125   XSelectInput(otk::OBDisplay::display, _info->rootWindow(), NoEventMask);
126   
127   // unmanage all windows
128   while (!clients.empty())
129     unmanageWindow(clients.front());
130
131   XDestroyWindow(otk::OBDisplay::display, _focuswindow);
132
133   delete _image_control;
134 }
135
136
137 void OBScreen::manageExisting()
138 {
139   unsigned int i, j, nchild;
140   Window r, p, *children;
141   XQueryTree(otk::OBDisplay::display, _info->rootWindow(), &r, &p,
142              &children, &nchild);
143
144   // preen the window list of all icon windows... for better dockapp support
145   for (i = 0; i < nchild; i++) {
146     if (children[i] == None) continue;
147
148     XWMHints *wmhints = XGetWMHints(otk::OBDisplay::display,
149                                     children[i]);
150
151     if (wmhints) {
152       if ((wmhints->flags & IconWindowHint) &&
153           (wmhints->icon_window != children[i])) {
154         for (j = 0; j < nchild; j++) {
155           if (children[j] == wmhints->icon_window) {
156             children[j] = None;
157             break;
158           }
159         }
160       }
161
162       XFree(wmhints);
163     }
164   }
165
166   // manage shown windows
167   for (i = 0; i < nchild; ++i) {
168     if (children[i] == None)
169       continue;
170
171     XWindowAttributes attrib;
172     if (XGetWindowAttributes(otk::OBDisplay::display, children[i], &attrib)) {
173       if (attrib.override_redirect) continue;
174
175       if (attrib.map_state != IsUnmapped) {
176         manageWindow(children[i]);
177       }
178     }
179   }
180
181   XFree(children);
182 }
183
184
185 //! Adds a window's strut to the screen's list of reserved spaces
186 void OBScreen::addStrut(otk::Strut *strut)
187 {
188   _struts.push_back(strut);
189 }
190
191
192 //! Removes a window's strut from the screen's list of reserved spaces
193 void OBScreen::removeStrut(otk::Strut *strut)
194 {
195   _struts.remove(strut);
196 }
197
198
199 void OBScreen::calcArea()
200 {
201   otk::Rect old_area = _area;
202
203 /*
204 #ifdef    XINERAMA
205   // reset to the full areas
206   if (isXineramaActive())
207     xineramaUsableArea = getXineramaAreas();
208 #endif // XINERAMA
209 */
210   
211   /* these values represent offsets from the screen edge
212    * we look for the biggest offset on each edge and then apply them
213    * all at once
214    * do not be confused by the similarity to the names of Rect's members
215    */
216   unsigned int current_left = 0, current_right = 0, current_top = 0,
217     current_bottom = 0;
218
219   StrutList::const_iterator it = _struts.begin(), end = _struts.end();
220
221   for(; it != end; ++it) {
222     otk::Strut *strut = *it;
223     if (strut->left > current_left)
224       current_left = strut->left;
225     if (strut->top > current_top)
226       current_top = strut->top;
227     if (strut->right > current_right)
228       current_right = strut->right;
229     if (strut->bottom > current_bottom)
230       current_bottom = strut->bottom;
231   }
232
233   _area.setRect(current_left, current_top,
234                 _info->width() - (current_left + current_right),
235                 _info->height() - (current_top + current_bottom));
236
237 /*
238 #ifdef    XINERAMA
239   if (isXineramaActive()) {
240     // keep each of the ximerama-defined areas inside the strut
241     RectList::iterator xit, xend = xineramaUsableArea.end();
242     for (xit = xineramaUsableArea.begin(); xit != xend; ++xit) {
243       if (xit->x() < usableArea.x()) {
244         xit->setX(usableArea.x());
245         xit->setWidth(xit->width() - usableArea.x());
246       }
247       if (xit->y() < usableArea.y()) {
248         xit->setY(usableArea.y());
249         xit->setHeight(xit->height() - usableArea.y());
250       }
251       if (xit->x() + xit->width() > usableArea.width())
252         xit->setWidth(usableArea.width() - xit->x());
253       if (xit->y() + xit->height() > usableArea.height())
254         xit->setHeight(usableArea.height() - xit->y());
255     }
256   }
257 #endif // XINERAMA
258 */
259   
260   if (old_area != _area)
261     // XXX: re-maximize windows
262
263   setWorkArea();
264 }
265
266
267 void OBScreen::setClientList()
268 {
269   Window *windows;
270   unsigned int size = clients.size();
271
272   // create an array of the window ids
273   if (size > 0) {
274     Window *win_it;
275     
276     windows = new Window[size];
277     win_it = windows;
278     ClientList::const_iterator it = clients.begin();
279     const ClientList::const_iterator end = clients.end();
280     for (; it != end; ++it, ++win_it)
281       *win_it = (*it)->window();
282   } else
283     windows = (Window*) 0;
284
285   Openbox::instance->property()->set(_info->rootWindow(),
286                                      otk::OBProperty::net_client_list,
287                                      otk::OBProperty::Atom_Window,
288                                      windows, size);
289
290   if (size)
291     delete [] windows;
292
293   setStackingList();
294 }
295
296
297 void OBScreen::setStackingList()
298 {
299   Window *windows;
300   unsigned int size = _stacking.size();
301
302   assert(size == clients.size()); // just making sure.. :)
303
304   
305   // create an array of the window ids
306   if (size > 0) {
307     Window *win_it;
308     
309     windows = new Window[size];
310     win_it = windows;
311     ClientList::const_iterator it = _stacking.begin();
312     const ClientList::const_iterator end = _stacking.end();
313     for (; it != end; ++it, ++win_it)
314       *win_it = (*it)->window();
315   } else
316     windows = (Window*) 0;
317
318   Openbox::instance->property()->set(_info->rootWindow(),
319                                      otk::OBProperty::net_client_list_stacking,
320                                      otk::OBProperty::Atom_Window,
321                                      windows, size);
322
323   if (size)
324     delete [] windows;
325 }
326
327
328 void OBScreen::setWorkArea() {
329   unsigned long area[] = { _area.x(), _area.y(),
330                            _area.width(), _area.height() };
331   Openbox::instance->property()->set(_info->rootWindow(),
332                                      otk::OBProperty::net_workarea,
333                                      otk::OBProperty::Atom_Cardinal,
334                                      area, 4);
335   /*
336   if (workspacesList.size() > 0) {
337     unsigned long *dims = new unsigned long[4 * workspacesList.size()];
338     for (unsigned int i = 0, m = workspacesList.size(); i < m; ++i) {
339       // XXX: this could be different for each workspace
340       const otk::Rect &area = availableArea();
341       dims[(i * 4) + 0] = area.x();
342       dims[(i * 4) + 1] = area.y();
343       dims[(i * 4) + 2] = area.width();
344       dims[(i * 4) + 3] = area.height();
345     }
346     xatom->set(getRootWindow(), otk::OBProperty::net_workarea,
347                otk::OBProperty::Atom_Cardinal,
348                dims, 4 * workspacesList.size());
349     delete [] dims;
350   } else
351     xatom->set(getRootWindow(), otk::OBProperty::net_workarea,
352                otk::OBProperty::Atom_Cardinal, 0, 0);
353   */
354 }
355
356
357 void OBScreen::manageWindow(Window window)
358 {
359   OBClient *client = 0;
360   XWMHints *wmhint;
361   XSetWindowAttributes attrib_set;
362
363   // is the window a docking app
364   if ((wmhint = XGetWMHints(otk::OBDisplay::display, window))) {
365     if ((wmhint->flags & StateHint) &&
366         wmhint->initial_state == WithdrawnState) {
367       //slit->addClient(w); // XXX: make dock apps work!
368       XFree(wmhint);
369       return;
370     }
371     XFree(wmhint);
372   }
373
374   otk::OBDisplay::grab();
375
376   // choose the events we want to receive on the CLIENT window
377   attrib_set.event_mask = OBClient::event_mask;
378   attrib_set.do_not_propagate_mask = OBClient::no_propagate_mask;
379   XChangeWindowAttributes(otk::OBDisplay::display, window,
380                           CWEventMask|CWDontPropagate, &attrib_set);
381
382   // create the OBClient class, which gets all of the hints on the window
383   client = new OBClient(_number, window);
384   // register for events
385   Openbox::instance->registerHandler(window, client);
386   // add to the wm's map
387   Openbox::instance->addClient(window, client);
388
389   // we dont want a border on the client
390   client->toggleClientBorder(false);
391   
392   // specify that if we exit, the window should not be destroyed and should be
393   // reparented back to root automatically
394   XChangeSaveSet(otk::OBDisplay::display, window, SetModeInsert);
395
396   if (!client->positionRequested()) {
397     // XXX: position the window intelligenty
398   }
399
400   // create the decoration frame for the client window
401   client->frame = new OBFrame(client, &_style);
402
403   // add to the wm's map
404   Openbox::instance->addClient(client->frame->window(), client);
405   Openbox::instance->addClient(client->frame->plate(), client);
406   Openbox::instance->addClient(client->frame->titlebar(), client);
407   Openbox::instance->addClient(client->frame->label(), client);
408   Openbox::instance->addClient(client->frame->button_max(), client);
409   Openbox::instance->addClient(client->frame->button_iconify(), client);
410   Openbox::instance->addClient(client->frame->button_stick(), client);
411   Openbox::instance->addClient(client->frame->button_close(), client);
412   Openbox::instance->addClient(client->frame->handle(), client);
413   Openbox::instance->addClient(client->frame->grip_left(), client);
414   Openbox::instance->addClient(client->frame->grip_right(), client);
415
416   // XXX: if on the current desktop..
417   client->frame->show();
418  
419   // XXX: handle any requested states such as shaded/maximized
420
421   otk::OBDisplay::ungrab();
422
423   // add to the screen's list
424   clients.push_back(client);
425   // this puts into the stacking order, then raises it
426   _stacking.push_back(client);
427   restack(true, client);
428   // update the root properties
429   setClientList();
430
431   Openbox::instance->bindings()->grabButtons(true, client);
432 }
433
434
435 void OBScreen::unmanageWindow(OBClient *client)
436 {
437   OBFrame *frame = client->frame;
438
439   Openbox::instance->bindings()->grabButtons(false, client);
440
441   // remove from the stacking order
442   _stacking.remove(client);
443   
444   // pass around focus if this window was focused XXX do this better!
445   if (Openbox::instance->focusedClient() == client) {
446     OBClient *newfocus = 0;
447     if (!_stacking.empty())
448       newfocus = _stacking.front();
449     if (! (newfocus && newfocus->focus()))
450       client->unfocus();
451   }
452
453   // remove from the wm's map
454   Openbox::instance->removeClient(client->window());
455   Openbox::instance->removeClient(frame->window());
456   Openbox::instance->removeClient(frame->plate());
457   Openbox::instance->removeClient(frame->titlebar());
458   Openbox::instance->removeClient(frame->label());
459   Openbox::instance->removeClient(frame->button_max());
460   Openbox::instance->removeClient(frame->button_iconify());
461   Openbox::instance->removeClient(frame->button_stick());
462   Openbox::instance->removeClient(frame->button_close());
463   Openbox::instance->removeClient(frame->handle());
464   Openbox::instance->removeClient(frame->grip_left());
465   Openbox::instance->removeClient(frame->grip_right());
466   // unregister for handling events
467   Openbox::instance->clearHandler(client->window());
468   
469   // remove the window from our save set
470   XChangeSaveSet(otk::OBDisplay::display, client->window(), SetModeDelete);
471
472   // we dont want events no more
473   XSelectInput(otk::OBDisplay::display, client->window(), NoEventMask);
474
475   frame->hide();
476
477   // give the client its border back
478   client->toggleClientBorder(true);
479
480   delete client->frame;
481   client->frame = 0;
482
483   // remove from the screen's list
484   clients.remove(client);
485   delete client;
486
487   // update the root properties
488   setClientList();
489 }
490
491 void OBScreen::restack(bool raise, OBClient *client)
492 {
493   const int layer = client->layer();
494   std::vector<Window> wins;
495
496   _stacking.remove(client);
497
498   // the stacking list is from highest to lowest
499   
500   ClientList::iterator it = _stacking.begin(), end = _stacking.end();
501   // insert the windows above this window
502   for (; it != end; ++it) {
503     if ((*it)->layer() < layer || (raise && (*it)->layer() == layer))
504       break;
505     wins.push_back((*it)->frame->window());
506   }
507   // insert our client
508   wins.push_back(client->frame->window());
509   _stacking.insert(it, client);
510   // insert the remaining below this window
511   for (; it != end; ++it)
512     wins.push_back((*it)->frame->window());
513
514   XRestackWindows(otk::OBDisplay::display, &wins[0], wins.size());
515   setStackingList();
516 }
517
518 }