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