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//
// Copyright 2008 Johannes Hofmann <Johannes.Hofmann@gmx.de>
//
// This software may be used and distributed according to the terms
// of the GNU General Public License, incorporated herein by reference.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <FL/Fl.H>
#include <FL/Fl_Double_Window.H>
#include "CurveEditor.H"
static CurveEditor *ce;
static char cmd[2048];
static void editor_cb(Fl_Widget* o, void* d) {
double x, y;
printf("%s ", cmd);
for (int i = 0; i<ce->get_n(); i++) {
if (i != 0)
printf(",");
ce->get_point(i, &x, &y);
printf("%.4g:%.4g", x, y);
}
printf("\n");
fflush(stdout);
}
static void
stdin_cb(int fd, void *d) {
char *curve = NULL;
if (fgets(cmd, sizeof(cmd), stdin) == NULL)
exit(0);
for (int i = strlen(cmd) - 1; i >= 0; i--)
if (isspace(cmd[i])) {
cmd[i] = '\0';
if (curve)
break;
} else
curve = &cmd[i];
if (curve) {
double x, y;
char *pstr;
ce->clear();
while (pstr = strsep(&curve, ",")) {
if (sscanf(pstr, "%lf:%lf", &x, &y) != 2 ||
y < 0 || x > 1 || y < 0 || y > 1) {
fprintf(stderr, "Could not parse control point %s.\n", pstr);
continue;
}
ce->add_point(x, y);
}
}
}
int
main(int argc, char **argv) {
Fl_Double_Window window(800, 600, "pnmcurvedit");
ce = new CurveEditor(0, 0, 800, 600);
ce->add_point(0.0, 0.0);
ce->add_point(0.5, 0.5);
ce->add_point(1.0, 1.0);
ce->callback(editor_cb, NULL);
window.resizable(ce);
window.show(argc, argv);
Fl::add_fd(0, FL_READ, stdin_cb);
return Fl::run();
}
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