fltk/test/list_visuals.cxx
Michael R Sweet f87393aaa1 OK, now version 1.0.9
Updated email addresses to point to fltk.org domain...

Updated README and CHANGES files accordingly.

Updated makeinclude and Makefile files to put -L../lib before the
LDFLAGS/GLDFLAGS to avoid problem reported by Alexander.

documentation/Makefile wasn't including makeinclude.

Updated FLUID about window to show version 1.0.9.


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.0@1168 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2000-06-05 21:21:24 +00:00

240 lines
6.1 KiB
C++

//
// "$Id: list_visuals.cxx,v 1.5.2.2 2000/06/05 21:21:22 mike Exp $"
//
// Visual list utility for the Fast Light Tool Kit (FLTK).
//
// List all the visuals on the screen, and dumps anything interesting
// about them to stdout.
//
// Does not use fltk.
//
// This file may be #included in another program to make a function to
// call to list the visuals. Fl.H must be included first to indicate this.
//
// Copyright 1998-2000 by Bill Spitzak and others.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 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
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library 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.
//
// Please report all bugs and problems to "fltk-bugs@fltk.org".
//
#ifdef WIN32
#include <FL/Fl.H>
#include <FL/fl_message.H>
int main(int, char**) {
fl_alert("Currently, this program works only under X.");
return 1;
}
#else
#include <config.h>
#ifndef Fl_H
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#include <stdio.h>
#include <stdlib.h>
Display *fl_display;
int fl_screen;
const char *dname;
void fl_open_display() {
fl_display = XOpenDisplay(dname);
if (!fl_display) {
fprintf(stderr,"Can't open display: %s\n",XDisplayName(dname));
exit(1);
}
fl_screen = DefaultScreen(fl_display);
}
#endif
const char *ClassNames[] = {
"StaticGray ",
"GrayScale ",
"StaticColor",
"PseudoColor",
"TrueColor ",
"DirectColor"
};
// SERVER_OVERLAY_VISUALS property element:
typedef struct _OverlayInfo {
long overlay_visual;
long transparent_type;
long value;
long layer;
} OverlayInfo;
#if HAVE_MULTIBUF
#include <X11/extensions/multibuf.h>
#endif
#if HAVE_XDBE
#include <X11/extensions/Xdbe.h>
#endif
static void print_mask(XVisualInfo* p) {
int n = 0;
int what = 0;
int print_anything = 0;
char buf[20];
char *q = buf;
*q = 0;
int b; unsigned int m; for (b=32,m=0x80000000; ; b--,m>>=1) {
int new_what = 0;
if (p->red_mask&m) new_what = 'r';
else if (p->green_mask&m) new_what = 'g';
else if (p->blue_mask&m) new_what = 'b';
else new_what = '?';
if (new_what != what) {
if (what && (what != '?' || print_anything)) {
q += sprintf(q,"%d%c", n, what);
print_anything = 1;
}
what = new_what;
n = 1;
} else {
n++;
}
if (!b) break;
}
printf("%7s", buf);
}
void list_visuals() {
fl_open_display();
XVisualInfo vTemplate;
int num;
XVisualInfo *visualList = XGetVisualInfo(fl_display,0,&vTemplate,&num);
XPixmapFormatValues *pfvlist;
static int numpfv;
pfvlist = XListPixmapFormats(fl_display, &numpfv);
OverlayInfo *overlayInfo = 0;
int numoverlayinfo = 0;
Atom overlayVisualsAtom = XInternAtom(fl_display,"SERVER_OVERLAY_VISUALS",1);
if (overlayVisualsAtom) {
unsigned long sizeData, bytesLeft;
Atom actualType;
int actualFormat;
if (!XGetWindowProperty(fl_display, RootWindow(fl_display, fl_screen),
overlayVisualsAtom, 0L, 10000L, False,
overlayVisualsAtom, &actualType, &actualFormat,
&sizeData, &bytesLeft,
(unsigned char **) &overlayInfo))
numoverlayinfo = int(sizeData/4);
}
#if HAVE_MULTIBUF
int event_base, error_base;
XmbufBufferInfo *mbuf, *sbuf;
int nmbuf = 0, nsbuf = 0;
if (XmbufQueryExtension(fl_display,&event_base, &error_base)) {
XmbufGetScreenInfo(fl_display,RootWindow(fl_display,fl_screen),
&nmbuf, &mbuf, &nsbuf, &sbuf);
}
#endif
#if HAVE_XDBE
int event_base, error_base;
int numdouble = 0;
XdbeVisualInfo *dbe = 0;
if (XdbeQueryExtension(fl_display, &event_base, &error_base)) {
Drawable root = RootWindow(fl_display,fl_screen);
int numscreens = 1;
XdbeScreenVisualInfo *a = XdbeGetVisualInfo(fl_display,&root,&numscreens);
if (!a) printf("error getting double buffer visuals\n");
else {
dbe = a->visinfo;
numdouble = a->count;
}
}
#endif
for (int i=0; i<num; i++) {
XVisualInfo *p = visualList+i;
XPixmapFormatValues *pfv;
for (pfv = pfvlist; ; pfv++) {
if (pfv >= pfvlist+numpfv) {pfv = 0; break;} // should not happen!
if (pfv->depth == p->depth) break;
}
int j = pfv ? pfv->bits_per_pixel : 0;
printf(" %2ld: %s %2d/%d", p->visualid, ClassNames[p->c_class],
p->depth, j);
if (j < 10) putchar(' ');
print_mask(p);
for (j=0; j<numoverlayinfo; j++) {
OverlayInfo *o = &overlayInfo[j];
if (o->overlay_visual == long(p->visualid)) {
printf(" overlay(");
if (o->transparent_type==1) printf("transparent pixel %ld, ",o->value);
else if (o->transparent_type==2) printf("transparent mask %ld, ",o->value);
else printf("opaque, ");
printf("layer %ld)", o->layer);
}
}
#if HAVE_MULTIBUF
for (j=0; j<nmbuf; j++) {
XmbufBufferInfo *m = &mbuf[j];
if (m->visualid == p->visualid)
printf(" multibuffer(%d)", m->max_buffers);
}
for (j=0; j<nsbuf; j++) {
XmbufBufferInfo *m = &sbuf[j];
if (m->visualid == p->visualid)
printf(" stereo multibuffer(%d)", m->max_buffers);
}
#endif
#if HAVE_XDBE
for (j = 0; j < numdouble; j++) if (dbe[j].visual == p->visualid)
printf(" doublebuf(perflevel %d)",dbe[j].perflevel);
#endif
if (p->visualid==XVisualIDFromVisual(DefaultVisual(fl_display,fl_screen)))
printf(" (default visual)");
putchar('\n');
}
}
#endif
#ifndef Fl_H
int main(int argc, char **argv) {
if (argc == 1);
else if (argc == 2 && argv[1][0]!='-') dname = argv[1];
else {fprintf(stderr,"usage: %s <display>\n",argv[0]); exit(1);}
list_visuals();
return 0;
}
#endif
//
// End of "$Id: list_visuals.cxx,v 1.5.2.2 2000/06/05 21:21:22 mike Exp $".
//