2001-05-30 11:36:31 -04:00
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/* Metacity X screen handler */
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/*
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* Copyright (C) 2001 Havoc Pennington
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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2001-05-31 02:42:58 -04:00
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2001-05-30 11:36:31 -04:00
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#include "screen.h"
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#include "util.h"
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2001-05-30 23:30:58 -04:00
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#include "errors.h"
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2001-05-31 02:42:58 -04:00
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#include "window.h"
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#include <cursorfont.h>
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2001-05-30 11:36:31 -04:00
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MetaScreen*
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meta_screen_new (MetaDisplay *display,
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int number)
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{
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MetaScreen *screen;
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2001-05-30 23:30:58 -04:00
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Window xroot;
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Display *xdisplay;
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2001-05-31 02:42:58 -04:00
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Cursor cursor;
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2001-05-30 23:30:58 -04:00
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/* Only display->name, display->xdisplay, and display->error_traps
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* can really be used in this function, since normally screens are
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* created from the MetaDisplay constructor
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*/
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xdisplay = display->xdisplay;
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meta_verbose ("Trying screen %d on display '%s'\n",
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number, display->name);
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xroot = RootWindow (xdisplay, number);
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/* FVWM checks for None here, I don't know if this
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* ever actually happens
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*/
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if (xroot == None)
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{
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meta_warning (_("Screen %d on display '%s' is invalid\n"),
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number, display->name);
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return NULL;
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}
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/* Select our root window events */
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meta_error_trap_push (display);
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XSelectInput (xdisplay,
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xroot,
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SubstructureRedirectMask | SubstructureNotifyMask |
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ColormapChangeMask | PropertyChangeMask |
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LeaveWindowMask | EnterWindowMask |
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ButtonPressMask | ButtonReleaseMask);
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if (meta_error_trap_pop (display) != Success)
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{
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meta_warning (_("Screen %d on display '%s' already has a window manager\n"),
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number, display->name);
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return NULL;
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}
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2001-05-31 02:42:58 -04:00
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cursor = XCreateFontCursor (display->xdisplay, XC_left_ptr);
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XDefineCursor (display->xdisplay, xroot, cursor);
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XFreeCursor (display->xdisplay, cursor);
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2001-05-30 11:36:31 -04:00
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screen = g_new (MetaScreen, 1);
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2001-05-31 02:42:58 -04:00
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screen->display = display;
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2001-05-30 11:36:31 -04:00
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screen->number = number;
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2001-05-30 23:30:58 -04:00
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screen->xscreen = ScreenOfDisplay (xdisplay, number);
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screen->xroot = xroot;
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2001-05-31 02:42:58 -04:00
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meta_verbose ("Added screen %d on display '%s' root 0x%lx\n",
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screen->number, screen->display->name, screen->xroot);
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2001-05-30 11:36:31 -04:00
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return screen;
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}
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void
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meta_screen_free (MetaScreen *screen)
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{
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g_free (screen);
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}
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2001-05-31 02:42:58 -04:00
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void
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meta_screen_manage_all_windows (MetaScreen *screen)
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{
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Window ignored1, ignored2;
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Window *children;
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unsigned int n_children;
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int i;
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/* Must grab server to avoid obvious race condition */
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meta_display_grab (screen->display);
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meta_error_trap_push (screen->display);
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XQueryTree (screen->display->xdisplay,
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screen->xroot,
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&ignored1, &ignored2, &children, &n_children);
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2001-05-30 11:36:31 -04:00
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2001-05-31 02:42:58 -04:00
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if (meta_error_trap_pop (screen->display))
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{
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meta_display_ungrab (screen->display);
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return;
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}
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i = 0;
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while (i < n_children)
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{
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meta_window_new (screen->display, children[i]);
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++i;
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}
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meta_display_ungrab (screen->display);
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if (children)
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XFree (children);
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}
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