~ctwm/ctwm/trunk

/*

 *  [ ctwm ]

 *

 *  Copyright 2014 Olaf Seibert

 *

 * Permission to use, copy, modify and distribute this software [ctwm]

 * and its documentation for any purpose is hereby granted without fee,

 * provided that the above copyright notice appear in all copies and

 * that both that copyright notice and this permission notice appear in

 * supporting documentation, and that the name of Olaf Seibert not be

 * used in advertising or publicity pertaining to distribution of the

 * software without specific, written prior permission. Olaf Seibert

 * makes no representations about the suitability of this software for

 * any purpose. It is provided "as is" without express or implied

 * warranty.

 *

 * Olaf Seibert DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,

 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN

 * NO EVENT SHALL Olaf Seibert BE LIABLE FOR ANY SPECIAL, 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.

 *

 * Author:  Olaf Seibert [ rhialto@falu.nl ][ May 2014 ]

 */

/*

 * Code to look at a few Motif Window Manager hints.

 *

 * Only the bits marked [v] are actually looked at.

 * For the rest, ctwm has no concept, really.

 *

 * For some information about the meaning of the flags, see

 * the manual page VendorShell(3) from the Motif library.

 */

#include "ctwm.h"

#include <stdio.h>

#include "ctwm_atoms.h"

#include "mwmhints.h"

int GetMWMHints(Window w, MotifWmHints *mwmHints)

{

	int success;

	Atom actual_type;

	int actual_format;

	unsigned long nitems;

	unsigned long bytes_after;

	unsigned long *prop = NULL;

	/* Defaults for when not found */

	mwmHints->flags = 0;

	mwmHints->functions = 0;

	mwmHints->decorations = 0;

#ifdef FULL_MWM_DATA

	mwmHints->input_mode = 0;

	mwmHints->status = 0;

#endif

	success = XGetWindowProperty(

	                  dpy, w, XA__MOTIF_WM_HINTS,

	                  0, 5,           /* long_offset, long long_length, */

	                  False,          /* Bool delete, */

	                  AnyPropertyType,/* Atom req_type */

	                  &actual_type,   /* Atom *actual_type_return, */

	                  &actual_format, /* int *actual_format_return, */

	                  &nitems,        /* unsigned long *nitems_return,  */

	                  &bytes_after,   /* unsigned long * */

	                  (unsigned char **)&prop);       /* unsigned char ** */

	if(success == Success &&

	                actual_type == XA__MOTIF_WM_HINTS &&

	                actual_format == 32 &&

	                nitems >= 3) {

		mwmHints->flags = (int)prop[0];

		mwmHints->functions = (int)prop[1];

		mwmHints->decorations = (int)prop[2];

#ifdef FULL_MWM_DATA

		mwmHints->input_mode = (int)prop[3];

		mwmHints->status = (int)prop[4];

#endif

		if(mwmHints->flags & MWM_HINTS_FUNCTIONS) {

			if(mwmHints->functions & MWM_FUNC_ALL) {

				mwmHints->functions ^= ~0;

			}

		}

		if(mwmHints->flags & MWM_HINTS_DECORATIONS) {

			if(mwmHints->decorations & MWM_DECOR_ALL) {

				mwmHints->decorations ^= ~0;

			}

		}

		success = True;

	}

	else {

		success = False;

	}

	if(prop != NULL) {

		XFree(prop);

	}

	return success;

}