initiate plugins branch

plugins/libwmfun/generic.c

@@ -0,0 +1,116 @@
+/*
+ *  libwmfun - WindowMaker texture function library
+ *  Copyright (C) 1999 Tobias Gloth
+ * 
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 
+ *  USA.
+ */
+
+/*
+ * $Id$
+ *
+ * $Log$
+ * Revision 1.1  2000/12/03 18:58:41  id
+ * initiate plugins branch
+ *
+ * Revision 1.1.1.1  1999/02/21 17:16:47  gloth
+ * initial revision
+ *
+ */
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "generic.h"
+
+static Display *dpy = 0;
+static Colormap cmap;
+
+void initWindowMaker (Display *d, Colormap c) {
+	if (!d) {
+		return;
+	}
+	dpy = d;
+	cmap = c;
+}
+
+void error (const char *format, ...) {
+	va_list args;
+	va_start (args, format);
+	vfprintf (stderr, format, args);
+	va_end (args);
+}
+
+int parse_color (const char *string, int *result) {
+	XColor color;
+
+	if (!XParseColor (dpy, cmap, string, &color)) {
+		return 0;
+	}
+	result[0] = color.red >> 8;
+	result[1] = color.green >> 8;
+	result[2] = color.blue >> 8;
+
+	return 1;
+}
+
+int parse_xcolor (const char *string, XColor *xcolor) {
+	if (!XParseColor (dpy, cmap, string, xcolor)) {
+        return 0;
+	}
+    if (!XAllocColor (dpy, cmap, xcolor)) {
+        return 0;
+    }
+
+	return 1;
+}
+
+void interpolate_color (int *t, const int *s0, const int *s1, int mix) {
+	t[0] = (mix * s0[0] + (255 - mix) * s1[0]) >> 8;
+	t[1] = (mix * s0[1] + (255 - mix) * s1[1]) >> 8;
+	t[2] = (mix * s0[2] + (255 - mix) * s1[2]) >> 8;
+}
+
+int random_int (int range) {
+	return rand() / (RAND_MAX / range + 1);
+}
+
+double random_double (double range) {
+	return ((double)rand()) / (((double)RAND_MAX) / range);
+}
+
+int start_image (const char *name,
+	int argc, int argc_min, int argc_max,
+	int width, int height, RImage **image) {
+
+	if (!dpy) {
+		error ("%s: library not initialized\n", name);
+		return 0;
+	}
+
+	if ((argc < argc_min) || (argc >= argc_max)) {
+		error ("%s: invalid number of parameters: \n", name, argc);
+		return 0;
+	}
+
+	*image = RCreateImage (width, height, 0);
+	if (!*image) {
+		error ("%s: can't create image\n", name);
+		return 0;
+	}
+	return 1;
+}
+