xref: /xsrc/external/mit/libX11/dist/src/GetHints.c

/***********************************************************

Copyright 1987, 1998  The Open Group

Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
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in this Software without prior written authorization from The Open Group.


Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.

                        All Rights Reserved

Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
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 Digital not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.

DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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******************************************************************/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <X11/Xlibint.h>
#include <X11/Xos.h>
#include <X11/Xutil.h>
#include "Xatomtype.h"
#include <X11/Xatom.h>
#include <stdio.h>

Status XGetSizeHints (
	Display *dpy,
	Window w,
	XSizeHints *hints,
        Atom property)
{
	xPropSizeHints *prop = NULL;
        Atom actual_type;
        int actual_format;
        unsigned long leftover;
        unsigned long nitems;
	if (XGetWindowProperty(dpy, w, property, 0L,
			       (long) OldNumPropSizeElements,
	    False, XA_WM_SIZE_HINTS, &actual_type, &actual_format,
            &nitems, &leftover, (unsigned char **)&prop)
            != Success) return (0);

        if ((actual_type != XA_WM_SIZE_HINTS) ||
	    (nitems < OldNumPropSizeElements) || (actual_format != 32)) {
		Xfree (prop);
                return(0);
		}
	hints->flags	  = (prop->flags & (USPosition|USSize|PAllHints));
	hints->x 	  = cvtINT32toInt (prop->x);
	hints->y 	  = cvtINT32toInt (prop->y);
	hints->width      = cvtINT32toInt (prop->width);
	hints->height     = cvtINT32toInt (prop->height);
	hints->min_width  = cvtINT32toInt (prop->minWidth);
	hints->min_height = cvtINT32toInt (prop->minHeight);
	hints->max_width  = cvtINT32toInt (prop->maxWidth);
	hints->max_height = cvtINT32toInt (prop->maxHeight);
	hints->width_inc  = cvtINT32toInt (prop->widthInc);
	hints->height_inc = cvtINT32toInt (prop->heightInc);
	hints->min_aspect.x = cvtINT32toInt (prop->minAspectX);
	hints->min_aspect.y = cvtINT32toInt (prop->minAspectY);
	hints->max_aspect.x = cvtINT32toInt (prop->maxAspectX);
	hints->max_aspect.y = cvtINT32toInt (prop->maxAspectY);
	Xfree(prop);
	return(1);
}

/*
 * must return a pointer to the hint, in malloc'd memory, or routine is not
 * extensible; any use of the caller's memory would cause things to be stepped
 * on.
 */

XWMHints *XGetWMHints (
	Display *dpy,
	Window w)
{
	xPropWMHints *prop = NULL;
	register XWMHints *hints;
        Atom actual_type;
        int actual_format;
        unsigned long leftover;
        unsigned long nitems;
	if (XGetWindowProperty(dpy, w, XA_WM_HINTS,
	    0L, (long)NumPropWMHintsElements,
	    False, XA_WM_HINTS, &actual_type, &actual_format,
            &nitems, &leftover, (unsigned char **)&prop)
            != Success) return (NULL);

	/* If the property is undefined on the window, return null pointer. */
	/* pre-R3 bogusly truncated window_group, don't fail on them */

        if ((actual_type != XA_WM_HINTS) ||
	    (nitems < (NumPropWMHintsElements - 1)) || (actual_format != 32)) {
		Xfree (prop);
                return(NULL);
		}
	/* static copies not allowed in library, due to reentrancy constraint*/
	if ((hints = Xcalloc (1, sizeof(XWMHints)))) {
	    hints->flags = prop->flags;
	    hints->input = (prop->input ? True : False);
	    hints->initial_state = cvtINT32toInt (prop->initialState);
	    hints->icon_pixmap = prop->iconPixmap;
	    hints->icon_window = prop->iconWindow;
	    hints->icon_x = cvtINT32toInt (prop->iconX);
	    hints->icon_y = cvtINT32toInt (prop->iconY);
	    hints->icon_mask = prop->iconMask;
	    if (nitems >= NumPropWMHintsElements)
		hints->window_group = prop->windowGroup;
	    else
		hints->window_group = 0;
	}
	Xfree (prop);
	return(hints);
}

Status
XGetZoomHints (
	Display *dpy,
	Window w,
	XSizeHints *zhints)
{
	return (XGetSizeHints(dpy, w, zhints, XA_WM_ZOOM_HINTS));
}

Status
XGetNormalHints (
	Display *dpy,
	Window w,
	XSizeHints *hints)
{
	return (XGetSizeHints(dpy, w, hints, XA_WM_NORMAL_HINTS));
}


/*
 * XGetIconSizes reads the property
 *	ICONSIZE_ATOM	type: ICONSIZE_ATOM format: 32
 */

Status XGetIconSizes (
	Display *dpy,
	Window w,	/* typically, root */
	XIconSize **size_list,	/* RETURN */
	int *count) 		/* RETURN number of items on the list */
{
	xPropIconSize *prop = NULL;
	register xPropIconSize *pp;
	register XIconSize *hp, *hints;
        Atom actual_type;
        int actual_format;
        unsigned long leftover;
        unsigned long nitems;
	register int i;

	if (XGetWindowProperty(dpy, w, XA_WM_ICON_SIZE, 0L, 60L,
	    False, XA_WM_ICON_SIZE, &actual_type, &actual_format,
            &nitems, &leftover, (unsigned char **)&prop)
            != Success) return (0);

	pp = prop;

        if ((actual_type != XA_WM_ICON_SIZE) ||
	    (nitems < NumPropIconSizeElements) ||
	    (nitems % NumPropIconSizeElements != 0) ||
	    (actual_format != 32)) {
		Xfree (prop);
                return(0);
		}

	/* static copies not allowed in library, due to reentrancy constraint*/

	nitems /= NumPropIconSizeElements;
	if (! (hp = hints = Xcalloc (nitems, sizeof(XIconSize)))) {
	    Xfree (prop);
	    return 0;
	}

	/* march down array putting things into native form */
	for (i = 0; i < nitems; i++) {
	    hp->min_width  = cvtINT32toInt (pp->minWidth);
	    hp->min_height = cvtINT32toInt (pp->minHeight);
	    hp->max_width  = cvtINT32toInt (pp->maxWidth);
	    hp->max_height = cvtINT32toInt (pp->maxHeight);
	    hp->width_inc  = cvtINT32toInt (pp->widthInc);
	    hp->height_inc = cvtINT32toInt (pp->heightInc);
	    hp += 1;
	    pp += 1;
	}
	*count = nitems;
	*size_list = hints;
	Xfree (prop);
	return(1);
}


Status XGetCommand (
    Display *dpy,
    Window w,
    char ***argvp,
    int *argcp)
{
    XTextProperty tp;
    int argc;
    char **argv;

    if (!XGetTextProperty (dpy, w, &tp, XA_WM_COMMAND)) return 0;

    if (tp.encoding != XA_STRING || tp.format != 8) {
	Xfree (tp.value);
	return 0;
    }


    /*
     * ignore final <NUL> if present since UNIX WM_COMMAND is nul-terminated
     */
    if (tp.nitems && (tp.value[tp.nitems - 1] == '\0')) tp.nitems--;


    /*
     * create a string list and return if successful
     */
    if (!XTextPropertyToStringList (&tp, &argv, &argc)) {
	Xfree (tp.value);
	return (0);
    }

    Xfree (tp.value);
    *argvp = argv;
    *argcp = argc;
    return 1;
}


Status
XGetTransientForHint(
	Display *dpy,
	Window w,
	Window *propWindow)
{
    Atom actual_type;
    int actual_format;
    unsigned long nitems;
    unsigned long leftover;
    Window *data = NULL;
    if (XGetWindowProperty(dpy, w, XA_WM_TRANSIENT_FOR, 0L, 1L, False,
        XA_WINDOW,
	&actual_type,
	&actual_format, &nitems, &leftover, (unsigned char **) &data)
	!= Success) {
	*propWindow = None;
	return (0);
	}
    if ( (actual_type == XA_WINDOW) && (actual_format == 32) &&
	 (nitems != 0) ) {
	*propWindow = *data;
	Xfree( (char *) data);
	return (1);
	}
    *propWindow = None;
    Xfree( (char *) data);
    return(0);
}

Status
XGetClassHint(
	Display *dpy,
	Window w,
	XClassHint *classhint)	/* RETURN */
{
    int len_name, len_class;

    Atom actual_type;
    int actual_format;
    unsigned long nitems;
    unsigned long leftover;
    unsigned char *data = NULL;
    if (XGetWindowProperty(dpy, w, XA_WM_CLASS, 0L, (long)BUFSIZ, False,
        XA_STRING,
	&actual_type,
	&actual_format, &nitems, &leftover, &data) != Success)
           return (0);

   if ( (actual_type == XA_STRING) && (actual_format == 8) ) {
	len_name = (int) strlen((char *) data);
	if (! (classhint->res_name = Xmalloc(len_name + 1))) {
	    Xfree(data);
	    return (0);
	}
	strcpy(classhint->res_name, (char *) data);
	if (len_name == nitems) len_name--;
	len_class = (int) strlen((char *) (data+len_name+1));
	if (! (classhint->res_class = Xmalloc(len_class + 1))) {
	    Xfree(classhint->res_name);
	    classhint->res_name = (char *) NULL;
	    Xfree(data);
	    return (0);
	}
	strcpy(classhint->res_class, (char *) (data+len_name+1));
	Xfree( (char *) data);
	return(1);
	}
    Xfree( (char *) data);
    return(0);
}