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117 lines
2.6 KiB
C
117 lines
2.6 KiB
C
/*
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* libwmfun - WindowMaker texture function library
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* Copyright (C) 1999 Tobias Gloth
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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/*
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* $Id$
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*
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* $Log$
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* Revision 1.1 2000/12/03 18:58:41 id
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* initiate plugins branch
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*
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* Revision 1.1.1.1 1999/02/21 17:16:47 gloth
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* initial revision
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*
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*/
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "generic.h"
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static Display *dpy = 0;
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static Colormap cmap;
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void initWindowMaker (Display *d, Colormap c) {
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if (!d) {
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return;
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}
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dpy = d;
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cmap = c;
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}
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void error (const char *format, ...) {
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va_list args;
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va_start (args, format);
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vfprintf (stderr, format, args);
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va_end (args);
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}
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int parse_color (const char *string, int *result) {
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XColor color;
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if (!XParseColor (dpy, cmap, string, &color)) {
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return 0;
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}
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result[0] = color.red >> 8;
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result[1] = color.green >> 8;
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result[2] = color.blue >> 8;
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return 1;
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}
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int parse_xcolor (const char *string, XColor *xcolor) {
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if (!XParseColor (dpy, cmap, string, xcolor)) {
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return 0;
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}
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if (!XAllocColor (dpy, cmap, xcolor)) {
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return 0;
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}
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return 1;
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}
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void interpolate_color (int *t, const int *s0, const int *s1, int mix) {
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t[0] = (mix * s0[0] + (255 - mix) * s1[0]) >> 8;
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t[1] = (mix * s0[1] + (255 - mix) * s1[1]) >> 8;
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t[2] = (mix * s0[2] + (255 - mix) * s1[2]) >> 8;
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}
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int random_int (int range) {
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return rand() / (RAND_MAX / range + 1);
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}
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double random_double (double range) {
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return ((double)rand()) / (((double)RAND_MAX) / range);
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}
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int start_image (const char *name,
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int argc, int argc_min, int argc_max,
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int width, int height, RImage **image) {
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if (!dpy) {
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error ("%s: library not initialized\n", name);
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return 0;
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}
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if ((argc < argc_min) || (argc >= argc_max)) {
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error ("%s: invalid number of parameters: \n", name, argc);
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return 0;
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}
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*image = RCreateImage (width, height, 0);
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if (!*image) {
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error ("%s: can't create image\n", name);
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return 0;
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}
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return 1;
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}
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