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/* xscreensaver, Copyright (c) 1992-1997 Jamie Zawinski <jwz@jwz.org>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation. No representations are made about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*/
/* Found in Don Hopkins' .plan file:
*
* The color situation is a total flying circus. The X approach to
* device independence is to treat everything like a MicroVax framebuffer
* on acid. A truely portable X application is required to act like the
* persistent customer in the Monty Python ``Cheese Shop'' sketch. Even
* the simplest applications must answer many difficult questions, like:
*
* WHAT IS YOUR DISPLAY?
* display = XOpenDisplay("unix:0");
* WHAT IS YOUR ROOT?
* root = RootWindow(display, DefaultScreen(display));
* AND WHAT IS YOUR WINDOW?
* win = XCreateSimpleWindow(display, root, 0, 0, 256, 256, 1,
* BlackPixel(display, DefaultScreen(display)),
* WhitePixel(display, DefaultScreen(display)))
* OH ALL RIGHT, YOU CAN GO ON.
*
* WHAT IS YOUR DISPLAY?
* display = XOpenDisplay("unix:0");
* WHAT IS YOUR COLORMAP?
* cmap = DefaultColormap(display, DefaultScreen(display));
* AND WHAT IS YOUR FAVORITE COLOR?
* favorite_color = 0; / * Black. * /
* / * Whoops! No, I mean: * /
* favorite_color = BlackPixel(display, DefaultScreen(display));
* / * AAAYYYYEEEEE!! (client dumps core & falls into the chasm) * /
*
* WHAT IS YOUR DISPLAY?
* display = XOpenDisplay("unix:0");
* WHAT IS YOUR VISUAL?
* struct XVisualInfo vinfo;
* if (XMatchVisualInfo(display, DefaultScreen(display),
* 8, PseudoColor, &vinfo) != 0)
* visual = vinfo.visual;
* AND WHAT IS THE NET SPEED VELOCITY OF AN XConfigureWindow REQUEST?
* / * Is that a SubStructureRedirectMask or a ResizeRedirectMask? * /
* WHAT?! HOW AM I SUPPOSED TO KNOW THAT?
* AAAAUUUGGGHHH!!!! (server dumps core & falls into the chasm)
*/
#ifndef __SCREENHACK_H__
#define __SCREENHACK_H__
#include <stdlib.h>
#include "config.h"
#ifdef __hpux
/* Which of the ten billion standards does values.h belong to?
What systems always have it? */
# include <values.h>
#endif
#include <stdio.h>
#include <X11/Xlib.h>
#include <X11/Xresource.h>
#include <X11/Xos.h>
/* M_PI ought to have been defined in math.h, but... */
#ifndef M_PI
# define M_PI 3.1415926535
#endif
#ifndef M_PI_2
# define M_PI_2 1.5707963267
#endif
#include "resources.h"
#include "visual.h"
extern Bool mono_p;
extern char *progname;
extern char *progclass;
extern XrmDatabase db;
extern XrmOptionDescRec options [];
extern char *defaults [];
extern void screenhack (Display*,Window);
extern int screenhack_handle_event (Display*, XEvent*);
extern int screenhack_handle_events (void);
extern void screen_redraw();
extern void screen_resized();
#endif /* __SCREENHACK_H__ */
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