| 1 | /* xscreensaver, Copyright (c) 1992-2002 Jamie Zawinski <jwz@jwz.org> |
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| 2 | * |
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| 3 | * Permission to use, copy, modify, distribute, and sell this software and its |
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| 4 | * documentation for any purpose is hereby granted without fee, provided that |
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| 5 | * the above copyright notice appear in all copies and that both that |
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| 6 | * copyright notice and this permission notice appear in supporting |
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| 7 | * documentation. No representations are made about the suitability of this |
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| 8 | * software for any purpose. It is provided "as is" without express or |
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| 9 | * implied warranty. |
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| 10 | */ |
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| 11 | |
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| 12 | /* Found in Don Hopkins' .plan file: |
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| 13 | * |
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| 14 | * The color situation is a total flying circus. The X approach to |
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| 15 | * device independence is to treat everything like a MicroVax framebuffer |
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| 16 | * on acid. A truely portable X application is required to act like the |
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| 17 | * persistent customer in the Monty Python ``Cheese Shop'' sketch. Even |
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| 18 | * the simplest applications must answer many difficult questions, like: |
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| 19 | * |
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| 20 | * WHAT IS YOUR DISPLAY? |
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| 21 | * display = XOpenDisplay("unix:0"); |
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| 22 | * WHAT IS YOUR ROOT? |
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| 23 | * root = RootWindow(display, DefaultScreen(display)); |
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| 24 | * AND WHAT IS YOUR WINDOW? |
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| 25 | * win = XCreateSimpleWindow(display, root, 0, 0, 256, 256, 1, |
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| 26 | * BlackPixel(display, DefaultScreen(display)), |
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| 27 | * WhitePixel(display, DefaultScreen(display))) |
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| 28 | * OH ALL RIGHT, YOU CAN GO ON. |
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| 29 | * |
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| 30 | * WHAT IS YOUR DISPLAY? |
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| 31 | * display = XOpenDisplay("unix:0"); |
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| 32 | * WHAT IS YOUR COLORMAP? |
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| 33 | * cmap = DefaultColormap(display, DefaultScreen(display)); |
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| 34 | * AND WHAT IS YOUR FAVORITE COLOR? |
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| 35 | * favorite_color = 0; / * Black. * / |
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| 36 | * / * Whoops! No, I mean: * / |
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| 37 | * favorite_color = BlackPixel(display, DefaultScreen(display)); |
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| 38 | * / * AAAYYYYEEEEE!! (client dumps core & falls into the chasm) * / |
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| 39 | * |
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| 40 | * WHAT IS YOUR DISPLAY? |
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| 41 | * display = XOpenDisplay("unix:0"); |
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| 42 | * WHAT IS YOUR VISUAL? |
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| 43 | * struct XVisualInfo vinfo; |
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| 44 | * if (XMatchVisualInfo(display, DefaultScreen(display), |
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| 45 | * 8, PseudoColor, &vinfo) != 0) |
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| 46 | * visual = vinfo.visual; |
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| 47 | * AND WHAT IS THE NET SPEED VELOCITY OF AN XConfigureWindow REQUEST? |
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| 48 | * / * Is that a SubStructureRedirectMask or a ResizeRedirectMask? * / |
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| 49 | * WHAT?! HOW AM I SUPPOSED TO KNOW THAT? |
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| 50 | * AAAAUUUGGGHHH!!!! (server dumps core & falls into the chasm) |
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| 51 | */ |
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| 52 | |
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| 53 | #ifndef __SCREENHACK_H__ |
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| 54 | #define __SCREENHACK_H__ |
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| 55 | |
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| 56 | #include <stdlib.h> |
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| 57 | |
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| 58 | #include "config.h" |
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| 59 | |
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| 60 | #ifdef __hpux |
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| 61 | /* Which of the ten billion standards does values.h belong to? |
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| 62 | What systems always have it? */ |
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| 63 | # include <values.h> |
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| 64 | #endif |
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| 65 | |
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| 66 | #include <stdio.h> |
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| 67 | |
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| 68 | #include <X11/Xlib.h> |
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| 69 | #include <X11/Xresource.h> |
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| 70 | #include <X11/Xos.h> |
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| 71 | |
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| 72 | /* M_PI ought to have been defined in math.h, but... */ |
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| 73 | #ifndef M_PI |
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| 74 | # define M_PI 3.1415926535 |
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| 75 | #endif |
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| 76 | |
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| 77 | #ifndef M_PI_2 |
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| 78 | # define M_PI_2 1.5707963267 |
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| 79 | #endif |
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| 80 | |
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| 81 | #include "yarandom.h" |
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| 82 | #include "usleep.h" |
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| 83 | #include "resources.h" |
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| 84 | #include "hsv.h" |
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| 85 | #include "colors.h" |
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| 86 | #include "grabscreen.h" |
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| 87 | #include "visual.h" |
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| 88 | |
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| 89 | extern Bool mono_p; |
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| 90 | extern char *progname; |
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| 91 | extern char *progclass; |
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| 92 | extern XrmDatabase db; |
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| 93 | extern XrmOptionDescRec options []; |
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| 94 | extern char *defaults []; |
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| 95 | |
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| 96 | extern void screenhack (Display*,Window); |
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| 97 | extern void screenhack_handle_event (Display*, XEvent*); |
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| 98 | extern void screenhack_handle_events (Display*); |
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| 99 | |
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| 100 | /* Be Posixly correct */ |
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| 101 | #undef bzero |
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| 102 | #define bzero __ERROR_use_memset_not_bzero_in_xscreensaver__ |
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| 103 | #undef bcopy |
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| 104 | #define bcopy __ERROR_use_memcpy_not_bcopy_in_xscreensaver__ |
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| 105 | #undef ftime |
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| 106 | #define ftime __ERROR_use_gettimeofday_not_ftime_in_xscreensaver__ |
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| 107 | |
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| 108 | #endif /* __SCREENHACK_H__ */ |
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