int
main(int argc, char *argv[])
{
int i, ret;
char *displayname = NULL;
Display *dpy;
float gam = -1., rgam = -1., ggam = -1., bgam = -1.;
XF86VidModeGamma gamma;
Bool quiet = False;
int screen = -1;
ProgramName = argv[0];
for (i = 1; i < argc; i++) {
char *arg = argv[i];
if (arg[0] == '-') {
if (isabbreviation ("-display", arg, 1)) {
if (++i >= argc) Syntax ("-display requires an argument");
displayname = argv[i];
continue;
} else if (isabbreviation ("-quiet", arg, 1)) {
quiet = True;
continue;
} else if (isabbreviation ("-version", arg, 1)) {
puts(PACKAGE_STRING);
exit(0);
} else if (isabbreviation ("-screen", arg, 1)) {
if (++i >= argc) Syntax ("-screen requires an argument");
screen = atoi(argv[i]);
continue;
} else if (isabbreviation ("-gamma", arg, 2)) {
if (++i >= argc) Syntax ("-gamma requires an argument");
if ((rgam >= 0.) || (ggam >= 0.) || (bgam >= 0.))
Syntax ("-gamma cannot be used with -rgamma, -ggamma, or -bgamma");
gam = (float)atof(argv[i]);
if ((gam < GAMMA_MIN) || (gam > GAMMA_MAX)) {
fprintf(stderr,
"Gamma values must be between %6.3f and %6.3f\n",
GAMMA_MIN, GAMMA_MAX);
exit(1);
}
continue;
} else if (isabbreviation ("-rgamma", arg, 2)) {
if (++i >= argc) Syntax ("-rgamma requires an argument");
if (gam >= 0.) Syntax ("cannot set both -gamma and -rgamma");
rgam = (float)atof(argv[i]);
if ((rgam < GAMMA_MIN) || (rgam > GAMMA_MAX)) {
fprintf(stderr,
"Gamma values must be between %6.3f and %6.3f\n",
GAMMA_MIN, GAMMA_MAX);
exit(1);
}
continue;
} else if (isabbreviation ("-ggamma", arg, 2)) {
if (++i >= argc) Syntax ("-ggamma requires an argument");
if (gam >= 0.) Syntax ("cannot set both -gamma and -ggamma");
ggam = (float)atof(argv[i]);
if ((ggam < GAMMA_MIN) || (ggam > GAMMA_MAX)) {
fprintf(stderr,
"Gamma values must be between %6.3f and %6.3f\n",
GAMMA_MIN, GAMMA_MAX);
exit(1);
}
continue;
} else if (isabbreviation ("-bgamma", arg, 2)) {
if (++i >= argc) Syntax ("-bgamma requires an argument");
if (gam >= 0.) Syntax ("cannot set both -gamma and -bgamma");
bgam = (float)atof(argv[i]);
if ((bgam < GAMMA_MIN) || (bgam > GAMMA_MAX)) {
fprintf(stderr,
"Gamma values must be between %6.3f and %6.3f\n",
GAMMA_MIN, GAMMA_MAX);
exit(1);
}
continue;
} else {
if (!isabbreviation ("-help", arg, 1))
fprintf (stderr, "%s: unrecognized argument %s\n\n",
ProgramName, arg);
Syntax (NULL);
}
} else {
fprintf (stderr, "%s: unrecognized argument %s\n\n",
ProgramName, arg);
Syntax (NULL);
}
}
if ((dpy = XOpenDisplay(displayname)) == NULL) {
fprintf (stderr, "%s: unable to open display '%s'\n",
ProgramName, XDisplayName (displayname));
exit(1);
} else if (screen == -1)
screen = DefaultScreen(dpy);
if (!XF86VidModeQueryVersion(dpy, &MajorVersion, &MinorVersion)) {
fprintf(stderr, "Unable to query video extension version\n");
exit(2);
}
if (!XF86VidModeQueryExtension(dpy, &EventBase, &ErrorBase)) {
fprintf(stderr, "Unable to query video extension information\n");
exit(2);
}
/* Fail if the extension version in the server is too old */
if (MajorVersion < MINMAJOR ||
(MajorVersion == MINMAJOR && MinorVersion < MINMINOR)) {
fprintf(stderr,
"Xserver is running an old XFree86-VidModeExtension version"
" (%d.%d)\n", MajorVersion, MinorVersion);
fprintf(stderr, "Minimum required version is %d.%d\n",
MINMAJOR, MINMINOR);
exit(2);
}
if (!XF86VidModeGetGamma(dpy, screen, &gamma)) {
fprintf(stderr, "Unable to query gamma correction\n");
XCloseDisplay (dpy);
exit (2);
} else if (!quiet)
fprintf(stderr, "-> Red %6.3f, Green %6.3f, Blue %6.3f\n", gamma.red,
gamma.green, gamma.blue);
ret = 0;
if (gam >= 0.) {
gamma.red = gam;
gamma.green = gam;
gamma.blue = gam;
if (!XF86VidModeSetGamma(dpy, screen, &gamma)) {
fprintf(stderr, "Unable to set gamma correction\n");
ret = 2;
} else {
if (!XF86VidModeGetGamma(dpy, screen, &gamma)) {
fprintf(stderr, "Unable to query gamma correction\n");
ret = 2;
} else if (!quiet)
fprintf(stderr, "<- Red %6.3f, Green %6.3f, Blue %6.3f\n",
gamma.red, gamma.green, gamma.blue);
}
} else if ((rgam >= 0.) || (ggam >= 0.) || (bgam >= 0.)) {
if (rgam >= 0.) gamma.red = rgam;
if (ggam >= 0.) gamma.green = ggam;
if (bgam >= 0.) gamma.blue = bgam;
if (!XF86VidModeSetGamma(dpy, screen, &gamma)) {
fprintf(stderr, "Unable to set gamma correction\n");
ret = 2;
} else {
if (!XF86VidModeGetGamma(dpy, screen, &gamma)) {
fprintf(stderr, "Unable to query gamma correction\n");
ret = 2;
} else if (!quiet)
fprintf(stderr, "<- Red %6.3f, Green %6.3f, Blue %6.3f\n",
gamma.red, gamma.green, gamma.blue);
}
}
XCloseDisplay (dpy);
exit (ret);
}
int
main(int argc, char *argv[])
{
Visual visual;
XSetWindowAttributes xswa;
int i;
char *displayname = NULL;
Display *dpy;
Colormap cmap;
enum e_action action = doDefault;
unsigned long mask;
int screen;
int x, y, width, height;
char *geom = NULL;
int geom_result;
int display_width, display_height;
char *solidcolor = NULL;
XColor cdef;
ProgramName = argv[0];
for (i = 1; i < argc; i++) {
char *arg = argv[i];
if (arg[0] == '-') {
if (isabbreviation ("-display", arg, 2)) {
if (++i >= argc) Syntax ();
displayname = argv[i];
continue;
} else if (isabbreviation ("-geometry", arg, 2)) {
if (++i >= argc) Syntax ();
geom = argv[i];
continue;
} else if (isabbreviation ("-black", arg, 2)) {
action = doBlack;
continue;
} else if (isabbreviation ("-white", arg, 2)) {
action = doWhite;
continue;
} else if (isabbreviation ("-solid", arg, 2)) {
if (++i >= argc) Syntax ();
solidcolor = argv[i];
action = doSolid;
continue;
} else if (isabbreviation ("-none", arg, 2)) {
action = doNone;
continue;
} else if (isabbreviation ("-root", arg, 2)) {
action = doRoot;
continue;
} else
Syntax ();
} else if (arg[0] == '=') /* obsolete */
geom = arg;
else
Syntax ();
}
if ((dpy = XOpenDisplay(displayname)) == NULL) {
fprintf (stderr, "%s: unable to open display '%s'\n",
ProgramName, XDisplayName (displayname));
exit (1);
}
if (action == doDefault) {
char *def;
if ((def = XGetDefault (dpy, ProgramName, "Solid")) != NULL) {
solidcolor = strdup (def);
if (solidcolor == NULL) {
fprintf (stderr,
"%s: unable to allocate memory for string.\n",
ProgramName);
exit (1);
}
action = doSolid;
} else {
struct s_pair *pp;
for (pp = pair_table; pp->resource_name != NULL; pp++) {
def = XGetDefault (dpy, ProgramName, pp->resource_name);
if (def && parse_boolean_option (def) == 1) {
action = pp->action;
}
}
}
}
if (geom == NULL) geom = XGetDefault (dpy, ProgramName, "Geometry");
screen = DefaultScreen (dpy);
display_width = DisplayWidth (dpy, screen);
display_height = DisplayHeight (dpy, screen);
x = y = 0;
width = display_width;
height = display_height;
if (DisplayCells (dpy, screen) <= 2 && action == doSolid) {
if (strcmp (solidcolor, "black") == 0)
action = doBlack;
else if (strcmp (solidcolor, "white") == 0)
action = doWhite;
else {
fprintf (stderr,
"%s: can't use colors on a monochrome display.\n",
ProgramName);
action = doNone;
}
}
if (geom)
geom_result = XParseGeometry (geom, &x, &y,
(unsigned int *)&width,
(unsigned int *)&height);
else
geom_result = NoValue;
/*
* For parsing geometry, we want to have the following
*
* = (0,0) for (display_width,display_height)
* =WxH+X+Y (X,Y) for (W,H)
* =WxH-X-Y (display_width-W-X,display_height-H-Y) for (W,H)
* =+X+Y (X,Y) for (display_width-X,display_height-Y)
* =WxH (0,0) for (W,H)
* =-X-Y (0,0) for (display_width-X,display_height-Y)
*
* If we let any missing values be taken from (0,0) for
* (display_width,display_height) we just have to deal with the
* negative offsets.
*/
if (geom_result & XNegative) {
if (geom_result & WidthValue) {
x = display_width - width + x;
} else {
width = display_width + x;
x = 0;
}
}
if (geom_result & YNegative) {
if (geom_result & HeightValue) {
y = display_height - height + y;
} else {
height = display_height + y;
y = 0;
}
}
mask = 0;
switch (action) {
case doBlack:
xswa.background_pixel = BlackPixel (dpy, screen);
mask |= CWBackPixel;
break;
case doWhite:
xswa.background_pixel = WhitePixel (dpy, screen);
mask |= CWBackPixel;
break;
case doSolid:
cmap = DefaultColormap (dpy, screen);
if (XParseColor (dpy, cmap, solidcolor, &cdef) &&
XAllocColor (dpy, cmap, &cdef)) {
xswa.background_pixel = cdef.pixel;
mask |= CWBackPixel;
} else {
fprintf (stderr,"%s: unable to allocate color '%s'.\n",
ProgramName, solidcolor);
action = doNone;
}
break;
case doDefault:
case doNone:
xswa.background_pixmap = None;
mask |= CWBackPixmap;
break;
case doRoot:
xswa.background_pixmap = ParentRelative;
mask |= CWBackPixmap;
break;
}
xswa.override_redirect = True;
xswa.backing_store = NotUseful;
xswa.save_under = False;
mask |= (CWOverrideRedirect | CWBackingStore | CWSaveUnder);
visual.visualid = CopyFromParent;
win = XCreateWindow(dpy, DefaultRootWindow(dpy), x, y, width, height,
0, DefaultDepth(dpy, screen), InputOutput, &visual, mask, &xswa);
/*
* at some point, we really ought to go walk the tree and turn off
* backing store; or do a ClearArea generating exposures on all windows
*/
XMapWindow (dpy, win);
/* the following will free the color that we might have allocateded */
XCloseDisplay (dpy);
exit (0);
}
