File: [Development] / projects / inventor / libSoXt / src / sgi_visual.c (download)
Revision 1.2, Tue Sep 25 00:45:48 2001 UTC (16 years, 1 month ago) by jlim
Branch: MAIN
CVS Tags: release-2_1_5-9, release-2_1_5-8, release-2_1_5-10, HEAD
Changes since 1.1: +4 -4
lines
Various changes:
* Fixed Bug 63 and 64.
* Handled nonstandard sed location.
* Used for-loop in man page install.
* Included casts for 64-bit builds.
* Added placeholder for FreeBSD options.
* Included unistd.h for getopt() and stdlib.h for malloc().
* Implemented SoText[23] workaround for glibc-2.2.* iconv().
* Split long lines in SoHandleBoxDraggerGeom.h and
SoTransformerDraggerGeom.h in lib/interaction/src/draggers/geom.
* Added IV_NO_OVERLAYS/OIV_NO_OVERLAYS variables to disable overlay planes.
|
/*
*
* Copyright (C) 2000 Silicon Graphics, Inc. All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/NoticeExplan/
*
*/
#include <sys/param.h>
#include <X11/Intrinsic.h>
#include <X11/Shell.h>
#include <X11/StringDefs.h>
#ifdef _SG_IS_STATIC
/*
* This hideous hack is to allow XmRoxy to compile and use this code without
* actually adding any symbols to the Xm library.
* #ifdef _SG_IS_STATIC
* static
* #endif
* is placed at the beginning of each function definition; XmRoxy will
* define _SG_IS_STATIC.
*
* This is the same as using "_SG_STORAGE", which is defined in sgi_visual.h
*
* Now that more than one subsystem (window manager, XmRoxy) is using this
* code, perhaps it should be put in a more central place (libSgt?). At that
* time this hack can be removed.
*/
#endif
#include <ctype.h>
#include <limits.h>
#include <stddef.h>
#include <stdio.h>
#include "sgi_visual.h"
/*
* Some of the less obvious choices are made because many of the entry points
* actually expect DWIM (Do What I Mean) code. In actual practice, a NULL
* generally means DWIM, not "use a literal default value" or "don't care".
*
* We could probably do more/better defaulting in some routines; if the
* need arises, be sure not to introduce any circular logic. Many of these
* routines call each other.
*/
/* THINGS TO DO:
* * NOTE: scr uses 0 as a default value, when in fact 0 is a valid
* value. scr should be made a pointer. Unfortunately, most X
* convention passes acr directly. Probably better to leave as is.
*
* * For parameters that must be passed, not defaulted, return an
* error status for out-of-range (e.g defaulted).
*/
/* KNOWN BUGS:
* * _SG_Warning core dumps with non-Xt programs. Fix it to work right
* (i.e. not core dump). See the remarks with that routine.
*/
/*
* Variables for this module
*/
/*
* used to return a value if and only if the caller passed a pointer.
*/
#define setNonNull(a,b) if (a) *(a) = (b)
/*
* We need to sort out visual information for ourselves because:
*
* * X11 does not give us the necessary facilities, so we provide our
* own heuristics.
*
* * This provides a form of caching -- in particular, every place
* that uses the same visual uses the same colormap.
*
* Some values (the arrays) contain a default value for each visual type.
* Defaults for the dpy/scr are indexed by defaultVisualType
*
* The following visual data structure is used throughout this module.
*/
struct overlayData {
long overlay_visual;
long transparent_type;
long value;
long layer;
};
typedef struct _VisInfo {
struct _VisInfo *next; /* ==> data for next screen/visual */
Display *dpy; /* display this visual info is for */
int scr; /* screen this visual info is for */
struct overlayData *pOverlay; /* SERVER_OVERLAY_VISUALS property */
unsigned long nOverlay; /* number of visuals in overlay prop */
XVisualInfo *visualList; /* ==> fetched visuals list */
int num; /* # of visuals for this scr & dpy */
Colormap *colormap; /* colormap for each visual */
int *flag; /* Attribute flags for each visual */
int defaultVisualType;
/* for this display/screen */
XVisualInfo *defaultVisualP[SG_MAX_TYPES];
/* ==> dflt visual record */
int defaultClass[SG_MAX_TYPES];
/* default visual class */
int defaultDepth[SG_MAX_TYPES];
/* default visual depth */
char *defaultVisualTypeS[SG_MAX_TYPES];
/* default visual type string */
} VisInfo, *VisInfoPtr;
/* Internal forward references */
#ifdef _NO_PROTO
_SG_STORAGE VisInfoPtr _SG_getVisualList();
_SG_STORAGE Visual *_SG_getVisual();
_SG_STORAGE int _SG_getMatchingClass();
_SG_STORAGE int _SG_getMatchingDepth();
_SG_STORAGE int _SG_getMatchingType();
_SG_STORAGE void _SG_warning();
#else/* _NO_PROTO */
_SG_STORAGE VisInfoPtr _SG_getVisualList
(Display *dpy, int scr);
_SG_STORAGE Visual *_SG_getVisual
(Display *dpy, int scr, int depth, int *v_class, int v_type);
_SG_STORAGE int _SG_getMatchingClass
(Display *dpy, int scr, int type, int depth, int *class);
_SG_STORAGE int _SG_getMatchingDepth
(Display *dpy, int scr, int *class, int type, int depth);
_SG_STORAGE int _SG_getMatchingType
(Display *dpy, int scr, int *class, int type, char **typeP);
_SG_STORAGE void _SG_warning
(Display *dpy, char *format, char *p1, char *p2, char *p3, char *p4);
#endif /* _NO_PROTO */
/* Global storage */
static int PColor = PseudoColor;
/*
* _SG_getDefaultColormap -- Routine to get a default ("best") colormap.
*
* Since the default colormap for each visual does not yet exist, we don't
* know with certainty what arguments will be needed in the long run.
*
* I have been promised that before the Cypress release there will be a
* default color map for each visual. At such time we should adopt it.
*
* In the meantime, we just get any suitable one. We do record the one we got,
* and re-use it for later requests where possible. This at least leaves a
* single application coordinated.
*
* Arguments: Default Values
* ================= =====================
* dpy none -- must be passed
* scr none -- must be passed
* vsl NULL DefaultVisual(dpy, scr)
*
* Errors returned: SG_BAD_DISPLAY no dpy argument supplied (one must be)
*
* Known Bugs: NONE
*
* Things To Do Later:
* * When X11 supports a default colormap for each visual, we should
* fetch it. That would considerably shorten this routine -- we
* would no longer need to call _SG_getVisualList and search the
* data it returns.
*
*/
_SG_STORAGE Colormap
_SG_getDefaultColormap (dpy, scr, vsl)
Display *dpy;
int scr;
Visual *vsl;
{
VisInfoPtr vp;
register int i;
/*
* Screen and visual can both be defaulted.
* If either has been, then set up the true value.
*/
if (!dpy) return ((Colormap)SG_BAD_DISPLAY); /* Cannot default dpy */
if (!vsl) vsl = DefaultVisual(dpy, scr);
/* See whether we are looking for the one-and-only default colormap. */
if ( vsl == DefaultVisual(dpy,scr) )
{ return DefaultColormap (dpy, scr); }
/*
* Search the list of visuals for a matching one.
* Then get its colormap.
*/
vp = _SG_getVisualList (dpy, scr); /* list of visuals */
for ( i=0 ; i < vp->num; i++ ) {
if ( (vp->visualList)[i].visual != vsl)
continue;
if ( ! (vp->colormap)[i] ) {
(vp->colormap)[i] = XCreateColormap(
dpy, RootWindow (dpy, scr), vsl, AllocNone);
}
return (vp->colormap)[i];
}
/*
* No matching visual -- just get the caller a colormap of its own.
*/
return XCreateColormap( dpy, RootWindow (dpy, scr), vsl, AllocNone);
} /* END OF FUNCTION _SG_getDefaultColormap */
/*
* Get the default depth for the given visual class and type.
*
* Arguments: Default Values
* ================= =====================
* dpy none -- must be passed
* scr none -- must be passed
* class NULL Not checked
* type NULL Normal (main) planes
*
* | explicit | normal | other
* type ==> || NULL | default | planes | value
* class || | | |
* =====================================================================
* || | | if (default |
* NULL || default | default | class == | maximum
* || depth | depth | PseudoColor) | depth
* || | | then 8 else max |
* =========||=================|===========|=================|==========
* || | | |
* explicit || default | default | | maximum
* default || depth | depth | ^^ ditto ^^ | depth
* || | | |
* =========||=================|===========|=================|==========
* || | | |
* Pseudo- || if (default | | | maximum
* Color || type == NORMAL) | <== ditto | 8 | depth
* || then 8 else max | | |
* || | | |
* =========||=================|===========|=================|==========
* || | | |
* other || maximum | maximum | maximum | maximum
* value || depth | depth | depth | depth
* || | | |
* =====================================================================
*
*
* Normal planes (class PseudoColor) prefer to return depth eight because
* that will minimize colormap flashing once Jeff puts in his code to
* provide 16 8-bit normal plane colormaps.
*
* Errors returned: SG_BAD_DISPLAY no dpy argument supplied (one must be)
*
* Known Bugs: None
*
* Things To Do Later: Nothing
*
*/
_SG_STORAGE int
_SG_getDefaultDepth (dpy, scr, class, type)
Display *dpy;
int scr, *class, type;
{
VisInfoPtr vp;
/* Process the calling parameters. Set up any needed defaults. */
if (!dpy) return ((int)SG_BAD_DISPLAY); /* Cannot default dpy*/
/*
* If both type and class are (implicitly or explicitly) default,
* so is the depth.
*/
vp = _SG_getVisualList (dpy, scr); /* list of visuals */
if ( (!class || (*class == vp->defaultClass[vp->defaultVisualType]))
&& (!type || (type == vp->defaultVisualType))
) {
return DefaultDepth(dpy, scr);
}
/*
* Normal planes && PseudoColor prefers 8 bits. This is because of
* plans to make 16 8-bit PseudoColor colormaps available.
*/
if ( ( ( !class
&& (vp->defaultClass[vp->defaultVisualType] == PseudoColor))
||(class && (*class == PseudoColor)))
&& ( ( !type && (vp->defaultVisualType == SG_NORMAL_PLANES))
||(type == SG_NORMAL_PLANES))
) {
if ( (vp->defaultClass[vp->defaultVisualType] == PseudoColor)
&& (vp->defaultVisualType == SG_NORMAL_PLANES)
) return 8;
}
return _SG_getMaxDepth(dpy, scr, class, type);
} /* END OF FUNCTION _SG_getDefaultDepth */
/*
* Check that the passed class actually exists, for this type and depth.
* If the passed one does not exist, try to get one that does.
*
* Arguments: Default Values
* ================= =====================
* dpy none -- must be passed
* scr none -- must be passed
* type none -- must be passed (underlay=1 ... overlay=4)
* depth none -- depth to be matched
* class NULL Don't care -- returns some suitable one
*
* Errors returned: SG_BAD_DISPLAY no dpy argument supplied (one must be)
*
* Known Bugs: None
*
* Things To Do Later:
* * Should type and depth use default values if passed a NULL?
*
*/
_SG_STORAGE int
_SG_getMatchingClass (dpy, scr, type, depth, class)
Display *dpy;
int scr, type, depth, *class;
{
VisInfoPtr vp;
register int i;
int foundClass = 0;
/* Process the calling parameters. Set up any needed defaults. */
if (!dpy) return ((int)SG_BAD_DISPLAY); /* Cannot default dpy*/
vp = _SG_getVisualList (dpy, scr); /* list of visuals */
/* Search the list for the matching Class */
for ( i=0 ; i < vp->num; i++ ) {
if ( (vp->flag)[i] != type ) continue;
if ( (vp->visualList)[i].depth != depth ) continue;
if ( class && ((vp->visualList)[i].class == *class) )
return *class;
/*
* Bias towards returning:
* default class (if present)
* PseudoColor (if cannot find the default class)
* Otherwise return whatever we can find.
*/
if (foundClass == vp->defaultClass[vp->defaultVisualType]) {
; /* Already found the default class */
} else if (foundClass == PseudoColor) {
if ( (vp->visualList)[i].class
== vp->defaultClass[vp->defaultVisualType])
{ foundClass = (vp->visualList)[i].class; }
} else {
foundClass = (vp->visualList)[i].class;
}
}
/* Else get what we can. */
return foundClass;
} /* END OF FUNCTION _SG_getMatchingClass */
/*
* Check that the passed depth actually exists.
* If not, get the default depth.
*
* Arguments: Default Values
* ================= =====================
* dpy none -- must be passed
* scr none -- must be passed
* class NULL Don't care
* type none -- must be passed (underlay=1 ... overlay=4)
* depth depth to be matched or defaulted
*
* Errors returned: SG_BAD_DISPLAY no dpy argument supplied
*
* Known Bugs:
* * class = 0 should not be used for "don't care",
* because it could mean StaticGray
*
* Things To Do Later: Nothing
*
*/
_SG_STORAGE int
_SG_getMatchingDepth (dpy, scr, class, type, depth)
Display *dpy;
int *class, scr, type, depth;
{
VisInfoPtr vp;
register int i;
/* Process the calling parameters. Set up any needed defaults. */
if (!dpy) return ((int)SG_BAD_DISPLAY); /* Cannot default dpy*/
vp = _SG_getVisualList (dpy, scr); /* list of visuals */
/* Search the list for the matching depth & class & type */
for ( i=0 ; i < vp->num; i++ ) {
if ( (vp->flag)[i] != type ) continue;
if ( class && ((vp->visualList)[i].class != *class) ) continue;
if ( (vp->visualList)[i].depth == depth )
return depth;
}
/* Else get what we can. This returns 0 if none is found. */
return _SG_getDefaultDepth (dpy, scr, class, type);
} /* END OF FUNCTION _SG_getMatchingDepth */
/*
* Check that the passed type actually exists.
* If not, return the default type.
*
* Arguments: Default Values
* ================= =====================
* dpy none -- must be passed
* scr none -- must be passed
* class NULL Don't care
* type NULL Normal (main) planes
* typeP none -- must point to a valid address for return value
*
* Errors returned: SG_BAD_DISPLAY no dpy argument supplied
*
* Known Bugs: None
*
* Things To Do Later: Nothing
*
*/
_SG_STORAGE int
_SG_getMatchingType (dpy, scr, class, type, typeP)
Display *dpy;
int *class, scr, type;
char **typeP;
{
VisInfoPtr vp;
register int i;
int underlay=0, normal=0, overlay=0, popup=0;
/* Process the calling parameters. Set up any needed defaults. */
if (!dpy) return ((int)SG_BAD_DISPLAY); /* Cannot default dpy*/
vp = _SG_getVisualList (dpy, scr); /* list of visuals */
/* You won't EVER get a match on type==0, so default is all we can do */
if (!type) {
*typeP = vp->defaultVisualTypeS[vp->defaultVisualType];
return vp->defaultVisualType;
}
/* Search the list for the matching type & class */
for ( i=0 ; i < vp->num; i++ ) {
if (vp->flag[i] == type)
if ( !class || ((vp->visualList)[i].class == *class)) {
return type;
}
switch (vp->flag[i]) {
case SG_UNDERLAY_PLANES:
underlay++;
break;
case SG_NORMAL_PLANES:
normal++;
break;
case SG_OVERLAY_PLANES:
overlay++;
break;
case SG_POPUP_PLANES:
popup++;
break;
}
}
/* Else return the default */
switch (type) {
case SG_UNDERLAY_PLANES:
*typeP = "NORMAL";
return SG_NORMAL_PLANES;
/* NOTREACHED */
break;
case SG_NORMAL_PLANES: /* This shouldn't ever happen */
*typeP = vp->defaultVisualTypeS[vp->defaultVisualType];
return vp->defaultVisualType;
/* NOTREACHED */
break;
case SG_OVERLAY_PLANES:
if (popup) {
*typeP = "POPUP";
return SG_POPUP_PLANES;
} else {
*typeP = "NORMAL";
return SG_NORMAL_PLANES;
}
/* NOTREACHED */
break;
case SG_POPUP_PLANES:
*typeP = "NORMAL";
return SG_NORMAL_PLANES;
/* NOTREACHED */
break;
default:
*typeP = vp->defaultVisualTypeS[vp->defaultVisualType];
return vp->defaultVisualType;
/* NOTREACHED */
break;
}
} /* END OF FUNCTION _SG_getMatchingType */
/*
* Get the visual information for the specified visual.
* This is a basic low-level routine so that the caller can get to ALL of the
* info.
*
* Arguments: Default Values
* ================= =====================
* dpy none -- must be passed
* scr none -- must be passed
* vsl 0 don't care
* class NULL don't care
* type 0 don't care
* depth 0 don't care
*
* Errors returned: SG_BAD_DISPLAY no dpy argument supplied
* SG_NO_SUCH_VISUAL couldn't find a matching visual
*
* Known Bugs: None
*
* Things To Do Later: Nothing
*
*/
_SG_STORAGE XVisualInfo *
_SG_getMatchingVisual (dpy, scr, vsl, class, type, depth)
Display *dpy;
int *class, depth, scr, type;
VisualID vsl;
{
VisInfoPtr vp;
register int i;
/* Process the calling parameters. Set up any needed defaults. */
if (!dpy) return ((XVisualInfo *)SG_BAD_DISPLAY); /*Can't dflt dpy*/
vp = _SG_getVisualList (dpy, scr); /* list of visuals */
/* Search the list for a matching visual */
for ( i=0 ; i < vp->num; i++ ) {
if ( ( !vsl || (vp->visualList)[i].visualid == vsl )
&& ( !class || (vp->visualList)[i].class == *class )
&& ( !depth || (vp->visualList)[i].depth == depth )
&& ( !type || (vp->flag[i] == type ) )
) {
return &(vp->visualList[i]);
}
}
/* No match was found */
return (XVisualInfo *) SG_NO_SUCH_VISUAL;
} /* END OF FUNCTION _SG_getMatchingVisual */
/*
* Get the maximum available depth for the given visual class and type.
*
* Arguments: Default Values
* ================= =====================
* dpy none -- must be passed
* scr none -- must be passed
* class NULL Not checked
* type NULL Default planes
*
* Errors returned: SG_BAD_DISPLAY no dpy argument supplied
*
* Known Bugs: None
*
* Things To Do Later: Nothing
*
*/
_SG_STORAGE int
_SG_getMaxDepth (dpy, scr, class, type)
Display *dpy;
int scr, *class, type;
{
VisInfoPtr vp;
register int i, depth=0;
/* Process the calling parameters. Set up any needed defaults. */
if (!dpy) return ((int)SG_BAD_DISPLAY); /* Cannot default dpy*/
vp = _SG_getVisualList (dpy, scr); /* list of visuals */
if (!type) type = vp->defaultVisualType;
/* Search the list for the greatest depth */
for ( i=0 ; i < vp->num; i++ ) {
if ( class && ((vp->visualList)[i].class != *class) )
continue;
if ((vp->flag)[i] != type )
continue;
if ( (vp->visualList)[i].depth > depth )
depth = (vp->visualList)[i].depth;
}
return depth;
} /* END OF FUNCTION _SG_getMaxDepth */
/* Convenience routine to get visual args for the normal planes.
*
* NOTE: we get the deepest normal visual available, just to demonstrate the
* capability. In fact, we suggest you stick to an 8-bit visual if you
* are using normal planes (i.e. neither popup nor overlay), because
* that will help to minimize colormap flashing.
*/
_SG_STORAGE int
_SG_getNormalArgs(dpy, scr, args, n)
Display *dpy;
int scr;
ArgList args;
int *n;
{
register Colormap colormap;
register int depth;
register Visual *visual;
depth = _SG_getDefaultDepth (dpy, scr, &PColor, SG_NORMAL_PLANES);
visual = _SG_getVisual(dpy,scr, depth, &PColor, SG_NORMAL_PLANES);
if ((ptrdiff_t)visual<0)
return ((int)(ptrdiff_t)visual);
colormap = _SG_getDefaultColormap (dpy, scr, visual);
XtSetArg(args[*n], XtNcolormap, colormap); (*n)++;
XtSetArg(args[*n], XtNdepth, depth); (*n)++;
XtSetArg(args[*n], XtNvisual, visual); (*n)++;
return (depth); /* something more meaningful later? */
} /* END OF FUNCTION _SG_getNormalArgs */
/*
* Convenience routine to get visual args for the overlay
* planes (default depth).
*/
_SG_STORAGE int
_SG_getOverlayArgs(dpy, scr, args, n)
Display *dpy;
int scr;
ArgList args;
int *n;
{
register Colormap colormap;
register int depth;
register Visual *visual;
depth = _SG_getDefaultDepth (dpy, scr, &PColor, SG_OVERLAY_PLANES);
visual = _SG_getVisual(dpy,scr, depth, &PColor, SG_OVERLAY_PLANES);
/* if ((ptrdiff_t)visual<0) return (_SG_getPopupArgs(dpy, scr, args, n));
*/
if ((ptrdiff_t)visual<0) return (_SG_getNormalArgs(dpy, scr, args, n));
colormap = _SG_getDefaultColormap (dpy, scr, visual);
XtSetArg(args[*n], XtNcolormap, colormap); (*n)++;
XtSetArg(args[*n], XtNdepth, depth); (*n)++;
XtSetArg(args[*n], XtNvisual, visual); (*n)++;
return (depth); /* something more meaningful later? */
} /* END OF FUNCTION _SG_getOverlayArgs */
/*
* Convenience routine to get visual args for the popup planes for
* Inventor pulldown menus. This will try to get the POPUP
* first then try the OVERLAY second.
*/
_SG_STORAGE int
iv_SG_getPopupArgs(dpy, scr, args, n)
ArgList args;
int scr;
Display *dpy;
int *n;
{
register Colormap colormap;
register int depth;
register Visual *visual;
/* POPUP first */
depth = _SG_getDefaultDepth(dpy, scr, &PColor, SG_POPUP_PLANES);
visual = _SG_getVisual(dpy, scr, depth, &PColor, SG_POPUP_PLANES);
/* OVERLAY if it fails */
if ((ptrdiff_t)visual < 0) {
depth = _SG_getDefaultDepth(dpy, scr, &PColor, SG_OVERLAY_PLANES);
visual = _SG_getVisual(dpy, scr, depth, &PColor, SG_OVERLAY_PLANES);
}
/* else REGULAR */
if ((ptrdiff_t)visual < 0)
return(_SG_getNormalArgs(dpy, scr, args, n));
colormap = _SG_getDefaultColormap(dpy, scr, visual);
XtSetArg(args[*n], XtNcolormap, colormap); (*n)++;
XtSetArg(args[*n], XtNdepth, depth); (*n)++;
XtSetArg(args[*n], XtNvisual, visual); (*n)++;
return (depth); /* something more meaningful later? */
} /* END OF FUNCTION iv_SG_getPopupArgs */
/*
* Convenience routine to get visual args for the underlay planes.
*
* NOTE: THE CURENT SGI X SERVER DOES NOT SUPPORT UNDERLAY PLANES
*/
_SG_STORAGE int
_SG_getUnderlayArgs(dpy, scr, args, n)
Display *dpy;
int scr;
ArgList args;
int *n;
{
register Colormap colormap;
register int depth;
register Visual *visual;
depth = _SG_getDefaultDepth (dpy, scr, &PColor, SG_UNDERLAY_PLANES);
visual = _SG_getVisual(dpy,scr,depth, &PColor, SG_UNDERLAY_PLANES);
if ((ptrdiff_t)visual<0) return (_SG_getNormalArgs(dpy, scr, args, n));
colormap = _SG_getDefaultColormap (dpy, scr, visual);
XtSetArg(args[*n], XtNcolormap, colormap); (*n)++;
XtSetArg(args[*n], XtNdepth, depth); (*n)++;
XtSetArg(args[*n], XtNvisual, visual); (*n)++;
return (depth); /* something more meaningful later? */
} /* END OF FUNCTION _SG_getUnderlayArgs */
/*
* _SG_getVisual -- Routine to find the precise visual asked for.
*
* Arguments: Default Values
* ================= =====================
* dpy none -- must be passed
* scr none -- must be passed
* depth NULL DefaultDepth(display, scr) or MaxDepth
* v_class NULL Don't care
* v_type NULL Default planes
*
* Errors returned: SG_BAD_DISPLAY no dpy argument supplied
*
* Known Bugs: None
*
* Things To Do Later: Nothing
*/
_SG_STORAGE Visual *
_SG_getVisual (dpy, scr, depth, v_class, v_type)
Display *dpy;
int scr, depth, *v_class, v_type;
{
VisInfoPtr vp;
register int i;
/* Process the calling parameters. Set up any needed defaults. */
if (!dpy) return ((Visual *)SG_BAD_DISPLAY); /* Cannot default dpy*/
vp = _SG_getVisualList (dpy, scr); /* list of visuals */
if (!v_type) v_type = vp->defaultVisualType;
if (!depth) {
if (( !v_class
|| (*v_class == vp->defaultClass[vp->defaultVisualType])
) && (v_type == vp->defaultVisualType)
) { depth = DefaultDepth(dpy, scr); }
else
{ depth = _SG_getMaxDepth (dpy, scr, v_class, v_type);}
}
/*
* Get the list of visuals & search it for a matching one.
*/
for ( i=0 ; i < vp->num; i++ ) {
if ((vp->visualList)[i].depth != depth)
continue;
if (v_class && ((vp->visualList)[i].class != *v_class))
continue;
if ( (vp->flag)[i] != v_type ) {
continue;
}
return (vp->visualList)[i].visual;
}
/* _SG_warning (dpy, "matching visual NOT found\n", "", "", "", "" );
*/
return ((Visual *)SG_NO_VISUAL);
} /* END OF FUNCTION _SG_getVisual */
/*
* Routine to supply the arguments for a toolkit arglist visual environment.
* Simple for now -- will be extended as other capabilities become available.
*
* All SGI systems have PUP planes. To keep things simple for now, just look
* for the PUP visual.
*
* Arguments:
* dpy The display is used to find the root window.
*
* args Must have room for the arguments to be added by this routine.
* Currently that means three more arguments. Possibly more in
* the future.
*
* n Index into the arguments list. It will be incremented for each
* argument added.
*
* Errors returned:
* NO_VISUAL could not get a suitable visual
*
* Known Bugs:
*
* Things To Do Later:
*
* * Extend the calling arguments to specify just what visual is wanted.
*
* * Perhaps we should pass a max number of arguments in, and then check
* it. That way if we add more arguments later, the application will
* be able to diagnose the problem.
*
* * Meaningful return status?
*/
_SG_STORAGE int
_SG_getVisualArgs(dpy, scr, depth, class, type, args, n)
Display *dpy;
int scr, depth, *class, type;
ArgList args;
int *n;
{
register Colormap colormap;
register Visual *visual;
visual = _SG_getVisual (dpy, scr, depth, class, type);
colormap = _SG_getDefaultColormap (dpy, scr, visual);
XtSetArg(args[*n], XtNcolormap, colormap); (*n)++;
XtSetArg(args[*n], XtNdepth, depth); (*n)++;
XtSetArg(args[*n], XtNvisual, visual); (*n)++;
return (depth); /* something more meaningful later? */
} /* END OF FUNCTION _SG_getVisualArgs */
/*
* Get, and cache, the list of visuals for this display & screen.
*
* vPtr points to a linked list. Each item on the list contains details of
* of the visual information for a particular display/screen combination.
*
* Arguments: Default Values
* ================= =====================
* dpy none -- must be passed
* scr none -- must be passed
*/
_SG_STORAGE VisInfoPtr
_SG_getVisualList(dpy, scr)
Display *dpy;
int scr;
{
static VisInfoPtr vPtr=NULL; /* ==> cache of visuals */
VisInfoPtr vp, vtmp;
XVisualInfo vTemplate; /* Visual values we need */
Atom actualType; /* (Returned) actual property type */
int actualFmt; /* (Returned) actual data type */
unsigned long bytesAfter; /* (Returned) number of unread bytes */
int rValue; /* return value */
/* "dpy" cannot be defaulted. */
if (!dpy) return ((VisInfoPtr)SG_BAD_DISPLAY); /* Cannot default dpy */
/* If there is a list, try to find a matching block */
if (vPtr) {
for (vp=vPtr; vp; vp=vp->next) {
if ( (vp->dpy == dpy) && (vp->scr == scr) ) {
return vp;
}
if (!vp->next) break;
}
}
/*
* Either an empty list, or else no match. In either case, malloc a
* new block, fill it in, and add it to the front of the list.
*/
vtmp = (VisInfoPtr)XtCalloc(sizeof(VisInfo),1); /* Get a new block */
vtmp->dpy = dpy;
vtmp->scr = scr;
/*
* Get the SERVER_OVERLAY_VISUALS property from the root window.
* This property is the only way we have to know which visuals are
* overlay visuals.
*/
rValue = XGetWindowProperty(dpy, RootWindow(dpy, scr),
XInternAtom(dpy, "SERVER_OVERLAY_VISUALS", FALSE), 0L,
(long)1000000, FALSE, AnyPropertyType, &actualType,
&actualFmt, &vtmp->nOverlay, &bytesAfter,
(unsigned char **)&vtmp->pOverlay);
/*
* Ensure that we really got the property.
* If no property, we don't know how to tell what is an overlay.
*/
if ( (rValue != Success)
|| (actualType == None)
|| (actualFmt != 32)
|| (vtmp->nOverlay < 4)
) {
/* SERVER_OVERLAY_VISUALS does not exist or it is an invalid type */
vtmp->nOverlay = 0;
vtmp->pOverlay = 0;
} else {
vtmp->nOverlay /= (sizeof (struct overlayData)/4);
}
vTemplate.screen = scr;
/* Get list of visuals */
vtmp->visualList =
XGetVisualInfo(dpy, VisualScreenMask, &vTemplate, &vtmp->num);
/* Get array to hold colormaps as allocated (one per visual) */
vtmp->colormap = (Colormap *)XtCalloc((Cardinal)sizeof(Colormap)*vtmp->num,1);
/* Get array to hold bit-coded flags (one per visual) */
vtmp->flag = (int *)XtCalloc((Cardinal)sizeof(int)*vtmp->num,1);
/* Fill in the type strings and values */
vtmp->defaultVisualTypeS[SG_UNDERLAY_PLANES] = "UNDERLAY";
vtmp->defaultVisualTypeS[SG_NORMAL_PLANES] = "NORMAL";
vtmp->defaultVisualTypeS[SG_OVERLAY_PLANES] = "OVERLAY";
vtmp->defaultVisualTypeS[SG_POPUP_PLANES] = "POPUP";
/*
* Derive the flags for each visual.
* For now, this is just the visual type (e.g. SG_NORMAL_PLANES).
*/
{
register int i, j;
int vis_depth_type = 0;
int depth, type;
for (i=0; i<vtmp->num; i++) { /* For each visual */
/*
* Decide the visual type for each visual.
*
* NOTE: even though hardware supports them, X11 doesn't
* deal in underlays. If it ever does, this code needs to
* be augmented to recognize them.
*/
if ( !vtmp->nOverlay ) {
/* No overlays at all */
vtmp->flag[i] = SG_NORMAL_PLANES;
} else {
for (j=0; j<vtmp->nOverlay; j++) {
/* If visual is on overlay visuals list */
if ( (vtmp->visualList)[i].visualid ==
(vtmp->pOverlay)[j].overlay_visual ) {
/* If HEURISTIC is popup visual */
if (
((vtmp->visualList)[i].depth == 2)
&& ((vtmp->visualList)[i].class == PseudoColor)
&& !vis_depth_type
) {
vtmp->flag[i]=SG_POPUP_PLANES;
vis_depth_type ++;
} else {
vtmp->flag[i]=SG_OVERLAY_PLANES;
}
break;
}
}
if (j == vtmp->nOverlay) {
/* Not on visuals list -- must be normal */
vtmp->flag[i] = SG_NORMAL_PLANES;
}
}
/*
* Keep track of the default visual information as we go.
* This will be used for handling the caller's defaults.
*/
type = (vtmp->flag)[i];
if ( DefaultVisual(dpy,scr)
== (vtmp->visualList)[i].visual
) {
vtmp->defaultVisualType = type;
vtmp->defaultVisualP[type] =
&(vtmp->visualList)[i];
vtmp->defaultClass[type] =
(vtmp->visualList)[i].class;
vtmp->defaultDepth[type] =
DefaultDepth(dpy, scr);
/*
* If this is not the known default, assume that the
* default for this type corresponds to maximum depth.
*/
/** DEBUG: Is this right? Perhaps we should assume the deepest PseudoColor, **/
/** DEBUG: or else the deepest visual type that matches the default one. **/
} else if (vtmp->defaultVisualType!=(vtmp->flag)[i]) {
depth = (vtmp->visualList)[i].depth;
if (depth > vtmp->defaultDepth[type]) {
vtmp->defaultDepth[type] = depth;
vtmp->defaultVisualP[type] =
&(vtmp->visualList)[i];
vtmp->defaultClass[type] =
(vtmp->visualList)[i].class;
}
}
}
}
/*
* Add the block to the front of our list. This is based on the
* assumption that it is the most likely to be needed again soon.
*/
vtmp->next = vPtr ? vPtr : (VisInfoPtr)NULL;
vPtr = vtmp;
return vPtr;
} /* END OF FUNCTION _SG_getVisualList */
/*
* Print a warning message to stderr. This is used the same way as the
* mwm function MWarning. We provide it here for other programs to use.
*
* Arguments: Meaning
* ================= =====================
* format fprintf format string
* dpy display (used to find the application name and class)
* p{1,2,3,4} fprintf parameters/values
*
* BUGS:
* * This routine core dumps in XtGetApplicationNameAndClass() if the
* program it is linked to is not an Xt program (e.g. Joel's improved
* xshowcmap). Some possible solutions are:
*
* * Behave differently for Xt and non-Xt programs:
* * If it is Xt program, QBoolean and XtQAtom should
* be non-zero
* * Add a call (or external char* variables SG_progName
* and SG_progClass), allowing non-Xt programs to set
* program's name and class.
* * only call the Xt stuff if it is an Xt progrma.
* Otherwise, if name not yet set, use a lesser message.
* * ifdef to never call Xt (we default it to call Xt, though)
*/
_SG_STORAGE void
#ifdef _NO_PROTO
_SG_warning (dpy, format, p1, p2, p3, p4)
Display *dpy;
char *format;
char *p1, *p2, *p3, *p4;
#else /* _NO_PROTO */
_SG_warning (Display *dpy, char *format, char *p1, char *p2, char *p3, char *p4)
#endif /* _NO_PROTO */
{
char pch[MAXPATHLEN];
String name="UNKNOWN PROGRAM", class="UNKNOWN CLASS";
XtGetApplicationNameAndClass(dpy, &name, &class);
sprintf (pch, format, p1, p2, p3, p4);
fprintf (stderr, "%s (%s): %s\n", name, class, pch);
fflush (stderr);
} /* END OF FUNCTION _SG_warning */
/***** SGI INTERNAL ONLY *****
**
** Following code is not included in the overlay demos.
** This code is for internal use, only (e.g. mwm, Toolchest, 4Dwm).
**/
/*******************************************************************************
* Routine to:
*
* * check the "SG_visualType" and "SG_visualDepth" resources.
* * Do the sensible thing for default cases.
* * get associated consistent visual attributes.
*
* This routine handles any default values.
* It also handles value conflicts, and resource settings that don't exist
* on the server in use.
*
* Arguments: Legal Values
* ================= =====================
* dpy must be passed
* scr must be passed
* requestedClass ==> PseudoColor (etc)
* (NULL pointer == default)
* (return) set to class actually found
* requestedType "underlay", "normal", "overlay", "popup", "default".
* "" == default, 0 == default
* requestedDepth ==> integer bitplane depth wanted.
* (NULL pointer == default)
* (return) set to depth actually found
*
* requestedTypeV (return) type value -- e.g. SG_OVERLAY_PLANES
* requestedVisual (return) corresponding visual
* requestedColormap (return) corresponding colormap
* requestedDrawable (return) corresponding drawable
*
* Any pointer may be NULL. If a return value pointer is null, the
* corresponding value will not be returned.
*
* To do: Nothing
*
*/
_SG_STORAGE int
#ifdef _NO_PROTO
_SG_defaultDepthAndTypeResources
(dpy, scr, requestedClass, requestedType, requestedTypeV,
requestedDepth, requestedVisual, requestedColormap, requestedDrawable)
Display *dpy;
int scr;
int *requestedClass;
char *requestedType;
int *requestedTypeV;
int *requestedDepth;
Visual **requestedVisual;
Colormap *requestedColormap;
Drawable *requestedDrawable;
#else /* _NO_PROTO */
_SG_defaultDepthAndTypeResources (
Display *dpy,
int scr,
int *requestedClass,
char *requestedType,
int *requestedTypeV,
int *requestedDepth,
Visual **requestedVisual,
Colormap *requestedColormap,
Drawable *requestedDrawable)
#endif /* _NO_PROTO */
{
int depth, typeV;
int userClass = (-1); /* zero is a valid value, not a flag */
int userDepth=0, userTypeV=0;/* dummies for null ptrs */
int returnStatus = 0;
char *actualType="";
Boolean requestedTypeWasNull = FALSE;
Boolean requestedClassWasNull = FALSE;
Boolean requestedDepthWasNull = FALSE;
Boolean forceDefaultValues = FALSE;
Boolean forceWarningMessage = FALSE;
VisInfoPtr vp;
/*
* Set up default values and flags.
*
* Allow for any null pointers the caller could have passed.
* Saves work (and bugs?) later.
*/
if (!dpy) return SG_BAD_DISPLAY; /* Cannot default dpy */
if (!requestedClass) {
requestedClassWasNull = TRUE;
requestedClass = &userClass;
}
if (!requestedType) {
requestedTypeWasNull = TRUE;
requestedType="";
}
if (!requestedDepth) {
requestedDepthWasNull = TRUE;
requestedDepth = &userDepth;
}
if (!requestedTypeV) requestedTypeV = &userTypeV;
/*
* If requestedVisual is null (i.e. we are not returning a visual),
* then requestedColormap and requestedDrawable must also be.
* We cannot return them without generating a visual.
*/
if (!requestedVisual) {
requestedColormap = requestedDrawable = 0;
}
/*
* Find out about the visuals available for this display and screen.
* All of the ensuing code depends on this list.
*/
vp = _SG_getVisualList (dpy, scr); /* list of visuals */
/*
* If all resources are defaulted (presumably a common case), it is a
* no-brainer. Just return default everything.
*/
if ( ( requestedTypeWasNull
|| (*requestedType == vp->defaultVisualType)
) && ( requestedClassWasNull
||(*requestedClass == vp->defaultClass[vp->defaultVisualType])
) && ( requestedDepthWasNull
||(*requestedDepth == vp->defaultDepth[vp->defaultVisualType])
) ) {
*requestedDepth = DefaultDepth (dpy, scr);
setNonNull (requestedTypeV, SG_NORMAL_PLANES);
setNonNull (requestedDrawable, RootWindow (dpy, scr));
setNonNull (requestedVisual, DefaultVisual (dpy, scr));
setNonNull (requestedColormap, DefaultColormap (dpy, scr));
return SG_VISUAL_DEFAULT;
}
/*
* Ensure that the caller's type is all alphabetic. This checks for
* trailing garbage. It catches the most misleading type of user
* error -- trailing white space.
*/
if (*requestedType){
char *cp;
for (cp=requestedType; *cp; cp++) {
if (!isalpha(*cp)) {
_SG_warning (dpy,
"SG_visualType \"%s\" contains a non-alphabetic character \"%c\".",
requestedType, (char *)(unsigned long)*cp, "","");
*cp = '\0';
_SG_warning (dpy, "Using \"%s\" instead.",
requestedType, "", "", "");
break;
}
}
}
/*
* Check to see that the type string is one we can deal with.
*/
if (!*requestedType) requestedType = "DEFAULT";
actualType = requestedType; /* Initialization */
if (!strcasecmp ("DEFAULT", requestedType)) {
actualType = (vp->defaultVisualTypeS)[vp->defaultVisualType];
*requestedTypeV = vp->defaultVisualType;
} else if (!strcasecmp ("UNDERLAY", requestedType)) {
actualType = (vp->defaultVisualTypeS)[vp->defaultVisualType];
*requestedTypeV = vp->defaultVisualType;
forceWarningMessage = TRUE;
_SG_warning (dpy, "underlay planes not supported from X11",
"", "", "", "");
} else if (!strcasecmp ("NORMAL", requestedType)) {
*requestedTypeV = SG_NORMAL_PLANES;
} else if (!strcasecmp ("OVERLAY", requestedType)) {
*requestedTypeV = SG_OVERLAY_PLANES;
} else if (!strcasecmp ("POPUP", requestedType)) {
*requestedTypeV = SG_POPUP_PLANES;
} else {
actualType = (vp->defaultVisualTypeS)[vp->defaultVisualType];
*requestedTypeV = vp->defaultVisualType;
forceWarningMessage = TRUE;
}
/*
* Type is the first thing known -- for our purposes, we need to do
* something intelligent about a defaulted class. Defaulting the
* class can be done more intelligently if we get a better handle on DWIM
* later on. The fundamental problem is whether we want a bias towards
* class, or towards preserving the requested depth if at all possible.
*/
if (requestedClassWasNull && (*requestedTypeV == vp->defaultVisualType))
{
*requestedClass = vp->defaultClass[vp->defaultVisualType];
}
/*
* We now know the visual type the user wants (possibly "DEFAULT").
* Check that we can get it -- and fall back if it isn't available.
*
* NOTE: Visual type is the "top priority" and all following code
* assumes that it is already set to a valid value.
*
* requestedType user's string
* actualType string we are giving the user
* *requestedTypeV (int) corresponding to actualType
*/
{
int i, underlay=0, normal=0, overlay=0, popup=0, typeFound=0;
/* Search the visuals list for the matching type & class */
for ( i=0 ; i < vp->num; i++ ) {
if (vp->flag[i] == *requestedTypeV) {
if (*requestedClass<0) break;
if ((vp->visualList)[i].class== *requestedClass)
break;
typeFound++;
}
switch (vp->flag[i]) {
case SG_UNDERLAY_PLANES:
underlay++; break;
case SG_NORMAL_PLANES:
normal++; break;
case SG_OVERLAY_PLANES:
overlay++; break;
case SG_POPUP_PLANES:
popup++; break;
}
}
if (i == vp->num) { /* If there is no matching type & class */
/* If class specified, we have an error */
if (typeFound) return SG_NO_TYPE_AND_CLASS;
/*
* Class not specified, and type not found.
* OK to use a fallback type.
*/
switch (*requestedTypeV) {
case SG_UNDERLAY_PLANES:
actualType = "NORMAL";
*requestedTypeV = SG_NORMAL_PLANES;
forceWarningMessage = TRUE;
break;
case SG_NORMAL_PLANES: /* Shouldn't happen */
actualType = vp->defaultVisualTypeS[vp->defaultVisualType];
*requestedTypeV = vp->defaultVisualType;
forceWarningMessage = TRUE;
break;
case SG_OVERLAY_PLANES:
if (popup) {
actualType = "POPUP";
*requestedTypeV =
SG_POPUP_PLANES;
} else {
actualType = "NORMAL";
*requestedTypeV =
SG_NORMAL_PLANES;
forceWarningMessage = TRUE;
}
break;
case SG_POPUP_PLANES:
actualType = "NORMAL";
*requestedTypeV = SG_NORMAL_PLANES;
forceWarningMessage = TRUE;
break;
default:
actualType = vp->defaultVisualTypeS[vp->defaultVisualType];
*requestedTypeV = vp->defaultVisualType;
forceWarningMessage = TRUE;
break;
}
}
}
/*
* At this point:
* actualType => string: "NORMAL", etc.
* requestedTypeV => (int) type value (1-4)
* requestedClass => (int) class value -1, (0-5)
* requestedDepth => either 0 (default) or else not yet verified.
*
* Verify we have a valid combination, and fall back if it is not.
*/
depth = *requestedDepth;
typeV = *requestedTypeV;
do {
depth = _SG_getMatchingDepth
(dpy, scr,
requestedClassWasNull ? NULL : requestedClass,
typeV, *requestedDepth);
if (!depth) {
switch (typeV) {
case SG_DEFAULT_PLANES: /* Nothing left */
_SG_warning (dpy,
"Unable to get requested visualType (%s) with visualDepth (%d).",
requestedType,
(char *)(unsigned long)*requestedDepth, "","");
_SG_warning (dpy,
"Setting visual resources to server default values.", "", "", "", "");
*requestedDepth = DefaultDepth
(dpy, scr);
*requestedClass =
vp->defaultClass[vp->defaultVisualType];
setNonNull (requestedTypeV,
SG_NORMAL_PLANES);
setNonNull (requestedDrawable,
RootWindow (dpy, scr));
setNonNull (requestedVisual,
DefaultVisual (dpy, scr));
setNonNull (requestedColormap,
DefaultColormap (dpy, scr));
return (SG_NO_VISUAL);
/* NOTREACHED */
break;
case SG_UNDERLAY_PLANES:
typeV = SG_NORMAL_PLANES;
actualType = "NORMAL";
break;
case SG_NORMAL_PLANES:
typeV = vp->defaultVisualType;
actualType = vp->defaultVisualTypeS[vp->defaultVisualType];
break;
case SG_OVERLAY_PLANES:
typeV = SG_POPUP_PLANES;
actualType = "POPUP";
break;
case SG_POPUP_PLANES:
typeV = SG_NORMAL_PLANES;
actualType = "NORMAL";
break;
}
}
} while (!depth);
/*
* We now have a corresponding (and valid) type and depth.
* Print a warning message if we had to change any non-default thing.
*/
if ( ( !requestedDepthWasNull
&& (depth != *requestedDepth)
&& (*requestedDepth != 0) )
|| ( !requestedTypeWasNull && (typeV != *requestedTypeV) )
|| ( forceWarningMessage )
) {
if (!( requestedDepthWasNull
&&(*requestedTypeV == SG_OVERLAY_PLANES)
&&(typeV == SG_POPUP_PLANES)
)) {
_SG_warning (dpy,
"Unable to get requested visualType (%s) with visualDepth (%d).",
requestedType, (char *)(unsigned long)*requestedDepth, "", "");
_SG_warning (dpy,
"Using visualType \"%s\" & visualDepth \"%d\" instead.",
actualType, (char *)(unsigned long)depth, "", "");
}
}
/*
* Return the type and depth we actually found.
* This must be after thw above error checking.
*/
*requestedDepth = depth;
setNonNull (requestedTypeV, typeV);
/*
* Now get the visual, colormap and a drawable to pass around.
*/
*requestedClass = _SG_getMatchingClass
(dpy, scr, typeV, depth,
requestedClassWasNull ? NULL : requestedClass);
setNonNull(requestedVisual, _SG_getVisual
(dpy, scr, depth, requestedClass, typeV));
/* If got visual successfully, set corresponding colormap & drawable */
if (requestedVisual && (ptrdiff_t)*requestedVisual >= 0) {
if (*requestedVisual == DefaultVisual(dpy, scr)) {
setNonNull (requestedColormap,
DefaultColormap (dpy, scr));
returnStatus = SG_VISUAL_DEFAULT;
} else {
setNonNull (requestedColormap,
_SG_getDefaultColormap
(dpy, scr, *requestedVisual));
}
setNonNull (requestedDrawable, XCreatePixmap
(dpy, RootWindow(dpy, scr), 1, 1, depth));
}
/*
* If we couldn't successfully get a full set of visual information...
*/
if ( requestedVisual && ((ptrdiff_t)*requestedVisual<=0)) {
_SG_warning (dpy, "Couldn't get suitable visual",
"", "", "", "");
forceDefaultValues++;
}
if ( requestedColormap && ((int)*requestedColormap<=0)) {
_SG_warning (dpy, "Couldn't get a matching colormap",
"", "", "", "");
forceDefaultValues++;
}
if ( requestedDrawable && ((int)*requestedDrawable<=0)) {
_SG_warning (dpy, "Couldn't get a matching drawable",
"", "", "", "");
forceDefaultValues++;
}
if (forceDefaultValues) {
_SG_warning (dpy,"Setting visual resources to default values.",
"", "", "", "");
*requestedDepth = DefaultDepth (dpy, scr);
setNonNull (requestedTypeV, SG_NORMAL_PLANES);
setNonNull (requestedDrawable, RootWindow (dpy, scr));
setNonNull (requestedVisual, DefaultVisual (dpy, scr));
setNonNull (requestedColormap, DefaultColormap (dpy, scr));
return (SG_NO_VISUAL);
}
return returnStatus ? returnStatus : SG_VISUAL_SUCCESS;
} /* END OF FUNCTION _SG_defaultDepthAndTypeResources */
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