IABSD.fr/xenocara/app/cwm/screen.c

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• Author : okan
  Date : 2010-01-27 03:04:50
  Hash : 3d3e2130
  Message : - allow per-screen gap; not (yet) user configurable. - teach _NET_WORKAREA about gap. ok oga@

• app/cwm/screen.c

• /*
   * calmwm - the calm window manager
   *
   * Copyright (c) 2004 Marius Aamodt Eriksen <marius@monkey.org>
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   *
   * $Id: screen.c,v 1.26 2010/01/27 03:04:50 okan Exp $
   */
  
  #include <sys/param.h>
  #include <sys/queue.h>
  
  #include <err.h>
  #include <errno.h>
  #include <stdlib.h>
  #include <string.h>
  #include <stdio.h>
  #include <unistd.h>
  
  #include "calmwm.h"
  
  struct screen_ctx *
  screen_fromroot(Window rootwin)
  {
  	struct screen_ctx	*sc;
  
  	TAILQ_FOREACH(sc, &Screenq, entry)
  		if (sc->rootwin == rootwin)
  			return (sc);
  
  	/* XXX FAIL HERE */
  	return (TAILQ_FIRST(&Screenq));
  }
  
  void
  screen_updatestackingorder(struct screen_ctx *sc)
  {
  	Window			*wins, w0, w1;
  	struct client_ctx	*cc;
  	u_int			 nwins, i, s;
  
  	if (!XQueryTree(X_Dpy, sc->rootwin, &w0, &w1, &wins, &nwins))
  		return;
  
  	for (s = 0, i = 0; i < nwins; i++) {
  		/* Skip hidden windows */
  		if ((cc = client_find(wins[i])) == NULL ||
  		    cc->flags & CLIENT_HIDDEN)
  			continue;
  
  		cc->stackingorder = s++;
  	}
  
  	XFree(wins);
  }
  
  void
  screen_init_xinerama(struct screen_ctx *sc)
  {
  	XineramaScreenInfo	*info;
  	int			 no;
  
  	if (HasXinerama == 0 || XineramaIsActive(X_Dpy) == 0) {
  		HasXinerama = 0;
  		sc->xinerama_no = 0;
  	}
  
  	info = XineramaQueryScreens(X_Dpy, &no);
  	if (info == NULL) {
  		/* Is xinerama actually off, instead of a malloc failure? */
  		if (sc->xinerama == NULL)
  			HasXinerama = 0;
  		return;
  	}
  
  	if (sc->xinerama != NULL)
  		XFree(sc->xinerama);
  	sc->xinerama = info;
  	sc->xinerama_no = no;
  }
  
  /*
   * Find which xinerama screen the coordinates (x,y) is on.
   */
  XineramaScreenInfo *
  screen_find_xinerama(struct screen_ctx *sc, int x, int y)
  {
  	XineramaScreenInfo	*info;
  	int			 i;
  
  	for (i = 0; i < sc->xinerama_no; i++) {
  		info = &sc->xinerama[i];
  		if (x > info->x_org && x < info->x_org + info->width &&
  		    y > info->y_org && y < info->y_org + info->height)
  			return (info);
  	}
  	return (NULL);
  }
  
  void
  screen_update_geometry(struct screen_ctx *sc, int width, int height)
  {
  	long	 geom[2], workareas[CALMWM_NGROUPS][4];
  	int	 i;
  
  	sc->xmax = geom[0] = width;
  	sc->ymax = geom[1] = height;
  	XChangeProperty(X_Dpy, sc->rootwin, _NET_DESKTOP_GEOMETRY,
  	    XA_CARDINAL, 32, PropModeReplace, (unsigned char *)geom , 2);
  
  	/* x, y, width, height. */
  	for (i = 0; i < CALMWM_NGROUPS; i++) {
  		workareas[i][0] = sc->gap.left;
  		workareas[i][1] = sc->gap.top;
  		workareas[i][2] = width - (sc->gap.left + sc->gap.right);
  		workareas[i][3] = height - (sc->gap.top + sc->gap.bottom);
  	}
  
  	XChangeProperty(X_Dpy, sc->rootwin, _NET_WORKAREA,
  	    XA_CARDINAL, 32, PropModeReplace,
  	    (unsigned char *)workareas, CALMWM_NGROUPS * 4);
  }