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// "utils.h" Misc. utilities. to be included by ALL files.
/* Copyright (C) 1994,1995,1996 Steve Hardt
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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
Steve Hardt
hardts@mit.edu (valid until Nov. 1996)
hardts@netscape.com
hardts@alum.mit.edu
http://graphics.lcs.mit.edu/~hardts/xevil.html
*/
#ifndef UTILS_H
#define UTILS_H
#ifndef NO_PRAGMAS
#pragma interface
#endif
// Include Files
#ifndef MATH_H_IS_CC
extern "C"
{
#endif
#include <math.h>
#ifndef MATH_H_IS_CC
}
#endif
extern "C"
{
#include <stdlib.h>
#include <time.h> // For seed to srandom and clock().
#include <X11/X.h>
#include <X11/Xlib.h>
}
#include <assert.h>
// Defines
#ifndef MSEC_PER_CLOCK
#define MSEC_PER_CLOCK (1.0e3 / CLOCKS_PER_SEC)
#endif
#ifndef max
#define max(a,b) (a<b ? b : a)
#endif
#ifndef min
#define min(a,b) (a>b ? b : a)
#endif
typedef char Boolean;
typedef unsigned long Pixel;
typedef int ColorNum;
#ifdef RANDOM_NEEDS_PROTOTYPES
extern "C" {
long random();
void srandom(int);
}
#endif
// Data Structures
#define Xvars_BACKGROUND "light grey"
class Xvars {
public:
enum {DISPLAYS_MAX = 6,DISPLAY_NAME_LENGTH = 80,
HUMAN_COLORS_NUM = 6};
Pixel allocNamedColor(int displayNum,const char *name,
Pixel def = (Pixel)-1);
/* EFFECTS: Tries to allocate the named color using the current values
of the Xvars. Returns the Pixel if successful. Otherwise, returns
default. If called with only 2 arguments, default
is white. If black and white display, returns default. */
int dpyMax; // Total number of allocated displays.
Display *dpy[DISPLAYS_MAX];
Screen *scr_ptr[DISPLAYS_MAX];
int scr_num[DISPLAYS_MAX];
Window root[DISPLAYS_MAX];
Visual *visual[DISPLAYS_MAX];
int depth[DISPLAYS_MAX];
Colormap cmap[DISPLAYS_MAX];
Pixel white[DISPLAYS_MAX],black[DISPLAYS_MAX]; /* background/foreground. */
Pixel red[DISPLAYS_MAX],green[DISPLAYS_MAX]; /* Both default to black. */
Pixel humanColors[DISPLAYS_MAX][HUMAN_COLORS_NUM];
GC gc[DISPLAYS_MAX];
/* Default gc except foreground is black, background is white, no
graphics exposures, font is set, stipple is suitable for drawing
insensitive areas, fill style is FillSolid */
XFontStruct *font[DISPLAYS_MAX];
static const char *humanColorNames[HUMAN_COLORS_NUM];
};
class Timer {
public:
Timer() {remaining = maxx = 0;}
// Starts out ready.
Timer(int t) {assert (t >= 0); maxx = t; remaining = 0;}
Boolean ready() {return remaining == 0;}
void set() {remaining = maxx;}
void set(int time) {remaining = time;}
void reset() {remaining = 0;}
void clock() {if (remaining) remaining--;}
private:
int remaining;
int maxx;
};
class Utils {
public:
static inline Boolean coinFlip()
#ifdef USE_RANDOM
{return (Boolean)(random() % 2);}
#else
{ return (Boolean)(rand() % 2); }
#endif
/* EFFECTS: Randomly returns True or False; */
static inline int choose(int x)
#ifdef USE_RANDOM
{
assert (x > 0);
return (int)(random() % x);
}
#else
{
assert (x > 0);
return rand() % x;
}
#endif
/* EFFECTS: Randomly return a number from 0 to x - 1. */
static void insertionSort(int arry[],int numElements);
static void randomList(int arry[],int numElements);
/* EFFECTS: Fills arry the first numElements of arry with the numbers in
{0..(numElements-1)} in a random order. */
static int minimum(int arry[],int size);
/* EFFECTS: Return the minimum value in the array arry of size size. */
static int minimum(int arry[],Boolean oks[],int size);
/* EFFECTS: Return the minimum value in arry which is ok or -1 if none. */
};
#endif
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