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/*
* xcolors - display all X color names and colors
* Time-stamp: <91/10/04 13:49:11 gildea>
*
* Copyright (c) 1989,1991 by Stephen Gildea
*
* 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 appears in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation. The authors make no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* Author: Stephen Gildea <gildea@expo.lcs.mit.edu>
* Orignal program by Paul Vixie.
*/
#include <X11/Intrinsic.h>
#include <X11/StringDefs.h>
#include <X11/Xaw/Paned.h>
#include <X11/Xaw/AsciiText.h>
#include <X11/Xaw/Viewport.h>
#include <X11/Xaw/Box.h>
#include <X11/Xaw/Label.h>
#include <stdio.h>
#include <ctype.h>
#include <math.h> /* for sqrt() */
#ifndef RGB_TXT
#define RGB_TXT "/etc/X11/rgb.txt"
#endif
String fallback_resources[] = {
"*Label.Font: 5x7",
"*panes.Width: 985",
"*Text*Height: 50",
"*viewport.allowVert: on",
"*sample*String: \
Button 1 sets the text color, button 2 sets the background.\\n\
Press q to quit. You can also type new text here.",
"*Label*translations: #override \
<Btn1Up>: set-foreground()\\n\
<Btn2Up>: set-background()",
"*Box*baseTranslations: #override \
<Key>q: quit()",
NULL};
struct OptionVals {
char *start_color;
char *rgb_file;
char *near_color;
int near_distance; /* radius, 0 to sqrt(3)*256 */
} opts;
XtResource resources[] = {
{ "startColor", "StartColor", XtRString, sizeof (char *),
XtOffsetOf(struct OptionVals, start_color), XtRString, NULL },
{ "rgbFile", "RgbFile", XtRString, sizeof (char *),
XtOffsetOf(struct OptionVals, rgb_file), XtRString, RGB_TXT },
{ "nearColor", "NearColor", XtRString, sizeof (char *),
XtOffsetOf(struct OptionVals, near_color), XtRString, NULL },
{ "nearDistance", "NearDistance", XtRInt, sizeof (int),
XtOffsetOf(struct OptionVals, near_distance),XtRImmediate,(XtPointer)64},
};
XrmOptionDescRec cmd_options[] = {
{"-start", ".startColor", XrmoptionSepArg, NULL},
{"-rgbfile", ".rgbFile", XrmoptionSepArg, NULL},
{"-near", ".nearColor", XrmoptionSepArg, NULL},
{"-distance", ".nearDistance", XrmoptionSepArg, NULL},
};
String wm_trans =
"<ClientMessage>WM_PROTOCOLS: quit()\n";
char *program_name;
int n_colors_displayed = 0; /* number of colors we are showing */
Atom wm_delete_window;
Atom wm_protocols;
Widget sample; /* the sample text */
void usage()
{
static char *option_help[] = {
" -rgbfile filename rgb.txt color database file to use",
" -start colorname first color to show",
" -near colorname only show colors similar to this one",
" -distance int how far in 0-255 RGB space is similar",
"",
NULL};
char **cpp;
fprintf (stderr, "usage: %s [-options ...]\n",
program_name);
fprintf (stderr, " where options include:\n");
for (cpp = option_help; *cpp; cpp++) {
fprintf (stderr, "%s\n", *cpp);
}
}
void
do_set_color(w, colorname, foreground_flag)
Widget w;
String colorname; /* if null, get from w */
Boolean foreground_flag;
{
Arg arg[2];
int n;
XrmValue namein, pixelout;
Pixel color;
if (colorname) {
namein.addr = colorname;
namein.size = strlen(colorname) + 1;
pixelout.size = 0; /* so we can check for success */
XtConvert(w, XtRString, &namein, XtRPixel, &pixelout);
if (pixelout.size == 0) {
fprintf(stderr, "%s: no such color as \"%s\" for %s\n",
program_name, colorname,
foreground_flag ? XtNforeground : XtNbackground);
return;
}
color = *(Pixel*)(pixelout.addr);
} else {
n = 0;
XtSetArg(arg[n], XtNborderColor, &color); n++;
XtGetValues(w, arg, n);
}
/* set the value in the text sample */
XtSetArg(arg[0], foreground_flag ? XtNforeground : XtNbackground, color);
XtSetValues(sample, arg, 1);
}
/* ARGSUSED */
void
set_foreground(w, event, params, num_params)
Widget w;
XEvent *event;
String *params;
Cardinal *num_params;
{
do_set_color(w, *num_params ? params[0] : NULL, TRUE);
}
/* ARGSUSED */
void
set_background(w, event, params, num_params)
Widget w;
XEvent *event;
String *params;
Cardinal *num_params;
{
do_set_color(w, *num_params ? params[0] : NULL, FALSE);
}
/* ARGSUSED */
void
quit_action(w, event, params, num_params)
Widget w;
XEvent *event;
String *params;
Cardinal *num_params;
{
if(event->type == ClientMessage && event->xclient.type == wm_protocols
&& event->xclient.data.l[0] != wm_delete_window)
return;
exit(0);
}
XtActionsRec actionTable[] = {
{"quit", quit_action},
{"set-foreground", set_foreground},
{"set-background", set_background},
};
main(argc, argv)
int argc;
char *argv[];
{
XtAppContext app_context;
Widget toplevel, panes, viewport, colors;
Arg arg[10];
int n;
Status stat;
XColor near_rgb, junk_rgb;
toplevel = XtAppInitialize(&app_context, "Xcolors",
cmd_options, XtNumber(cmd_options), &argc, argv,
fallback_resources, NULL, 0);
XtGetApplicationResources (toplevel, (XtPointer) &opts, resources,
XtNumber(resources), NULL, 0);
program_name = argv[0];
argc--; argv++;
if (argc != 0) {
usage();
exit(3);
}
if (opts.near_color) {
/* User asked to only see colors near this in RGB space.
Get the color from the server and scale it for comparison with
rgb.txt values */
stat = XLookupColor(XtDisplay(toplevel),
DefaultColormapOfScreen(XtScreen(toplevel)),
opts.near_color, &near_rgb, &junk_rgb);
if (!stat) {
fprintf(stderr, "%s: color \"%s\" is not known to the X server\n",
program_name, opts.near_color);
exit(1);
}
near_rgb.red >>= 8;
near_rgb.green >>= 8;
near_rgb.blue >>= 8;
near_rgb.flags = DoRed|DoBlue|DoGreen;
} else
near_rgb.flags = 0;
XtAppAddActions(app_context, actionTable, XtNumber(actionTable));
n = 0;
panes = XtCreateManagedWidget("panes", panedWidgetClass,
toplevel, arg, n);
n = 0;
XtSetArg(arg[n], XtNeditType, XawtextEdit); n++;
sample = XtCreateManagedWidget("sample", asciiTextWidgetClass,
panes, arg, n);
n = 0;
viewport = XtCreateManagedWidget("viewport", viewportWidgetClass,
panes, arg, n);
n = 0;
colors = XtCreateManagedWidget("colors", boxWidgetClass,
viewport, arg, n);
colordemo(colors, opts.start_color, near_rgb, opts.near_distance);
if (n_colors_displayed == 0) {
fprintf(stderr, "%s: no colors to display\n", program_name);
exit(5);
}
XtSetMappedWhenManaged(toplevel, FALSE);
XtRealizeWidget(toplevel);
/* do WM_DELETE_WINDOW before map */
XtOverrideTranslations(toplevel, XtParseTranslationTable(wm_trans));
wm_protocols = XInternAtom(XtDisplay(toplevel), "WM_PROTOCOLS", False);
wm_delete_window = XInternAtom(XtDisplay(toplevel), "WM_DELETE_WINDOW",
False);
XSetWMProtocols(XtDisplay(toplevel), XtWindow(toplevel),
&wm_delete_window, 1);
XtMapWidget(toplevel);
XtAppMainLoop(app_context);
/* NOTREACHED */
}
colordemo(parent, startcolor, nearcolor, maxdist)
Widget parent;
char *startcolor;
XColor nearcolor; /* scaled 0-255 */
int maxdist;
{
int r, g, b, prev_r, prev_g, prev_b;
char colorname[50], save_colorname[50];
FILE *rgb;
Bool do_color();
double ddist = maxdist;
rgb = fopen(opts.rgb_file, "r");
if (rgb == NULL) {
perror(opts.rgb_file);
exit(2);
}
prev_r = prev_g = prev_b = -1;
save_colorname[0] = '\0';
while (!feof(rgb)) {
char str[1024];
fgets(str, 1024L, rgb);
if (*str != '!') /* comment */ {
sscanf(str, "%d %d %d %[^\n]\n", &r, &g, &b, colorname);
if (startcolor)
if (l_strcasecmp(colorname, startcolor))
continue; /* haven't reached starting point yet */
else
startcolor = (char *)NULL;
if (r != prev_r || g != prev_g || b != prev_b) {
if (nearcolor.flags) {
double ourdist =
sqrt((double)((nearcolor.red-r)*(nearcolor.red-r)
+ (nearcolor.green-g)*(nearcolor.green-g)
+ (nearcolor.blue-b)*(nearcolor.blue-b)));
if (ourdist > ddist)
continue;
}
if (save_colorname[0] != '\0') /* skip first time through */
if (!do_color(parent, save_colorname))
return;
prev_r = r;
prev_g = g;
prev_b = b;
}
strcpy(save_colorname, colorname);
}
}
if (save_colorname[0] != '\0')
(void)do_color(parent, save_colorname);
if (startcolor) { /* never found starting color in the file */
fprintf(stderr, "%s: \"%s\" not found in %s\n",
program_name, startcolor, opts.rgb_file);
}
}
/*
* does one color.
* Returns a success code.
*/
Bool
do_color(parent, colorname)
Widget parent;
char *colorname;
{
Arg arg[10];
int n;
XrmValue namein, pixelout;
/* convert colorname to a Pixel (a colormap index) */
namein.addr = colorname;
namein.size = strlen(colorname) + 1;
pixelout.size = 0; /* so we can check for success */
XtConvert(parent, XtRString, &namein, XtRPixel, &pixelout);
if (pixelout.size == 0) {
fprintf(stderr, "%s: Not enough room in color map.\n", program_name);
fprintf(stderr, "To see colors after this, ");
fprintf(stderr, "use the -start option to name a starting color.\n");
return FALSE;
}
/* create a widget to display the color */
n = 0;
XtSetArg(arg[n], XtNborderWidth, 10); n++;
XtSetArg(arg[n], XtNborderColor, *(Pixel*)(pixelout.addr)); n++;
XtCreateManagedWidget(colorname, labelWidgetClass, parent, arg, n);
n_colors_displayed++;
return TRUE;
}
/*
* Not all systems have strcasecmp, so we provide our own.
* Similar to strcmp, but ignores case.
* Always returns 1 if different.
*/
int
l_strcasecmp(s1, s2)
char *s1, *s2;
{
for ( ; *s1 && *s2 ; s1++, s2++)
if ((isupper(*s1) ? tolower(*s1) : *s1) !=
(isupper(*s2) ? tolower(*s2) : *s2))
return 1;
if (*s1 || *s2)
return 1;
return 0;
}
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