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/* xlockmore.h --- xscreensaver compatibility layer for xlockmore modules.
* xscreensaver, Copyright (c) 1997-2021 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.
*
* See xlockmore.h and xlockmore.c.
*/
#ifndef __XLOCKMORE_INTERNAL_H__
#define __XLOCKMORE_INTERNAL_H__
#include <time.h>
#include "screenhackI.h"
#include "erase.h"
typedef struct ModeInfo ModeInfo;
/* Keep slots for these pointers in ModeInfo even if this header is
included in a file that is not being compiled in GL-mode. so that
sizeof(ModeInfo) doesn't vary.
*/
#if defined(HAVE_GL) && !defined(USE_GL)
# ifdef HAVE_JWZGLES
typedef struct jwzgles_state jwzgles_state;
# endif
# ifdef HAVE_EGL
typedef struct egl_data egl_data;
# elif !defined(HAVE_COCOA) && !defined(HAVE_ANDROID)
typedef void *GLXContext;
# endif
#endif /* HAVE_GL && !USE_GL */
#ifdef HAVE_EGL
typedef struct egl_data *GLXContext;
typedef Drawable GLXDrawable;
#endif /* !HAVE_EGL */
#if defined(HAVE_EGL) && defined(USE_GL)
typedef struct egl_data {
EGLDisplay egl_display;
EGLSurface egl_surface;
EGLContext egl_context; /* Unused */
EGLConfig egl_config; /* Unused */
} egl_data;
extern Bool glXMakeCurrent (Display *, GLXDrawable, GLXContext);
extern void glXSwapBuffers (Display *, GLXDrawable);
#endif /* HAVE_EGL && USE_GL */
#ifdef USE_GL
extern GLXContext *init_GL (ModeInfo *);
extern void xlockmore_reset_gl_state(void);
extern void clear_gl_error (void);
extern void check_gl_error (const char *type);
extern Visual *xlockmore_pick_gl_visual (Screen *);
extern Bool xlockmore_validate_gl_visual (Screen *, const char *, Visual *);
#endif /* USE_GL */
/* These are only used in GL mode, but I don't understand why XCode
isn't seeing the prototypes for them in glx/fps-gl.c... */
extern void do_fps (ModeInfo *);
extern void xlockmore_gl_compute_fps (Display *, Window, fps_state *, void *);
extern void xlockmore_gl_draw_fps (ModeInfo *);
extern void xlockmore_gl_free_fps (fps_state *);
# define do_fps xlockmore_gl_draw_fps
extern void xlockmore_setup (struct xscreensaver_function_table *, void *);
extern void xlockmore_do_fps (Display *, Window, fps_state *, void *);
extern void xlockmore_mi_init (ModeInfo *, size_t, void **);
extern Bool xlockmore_no_events (ModeInfo *, XEvent *);
/* The xlockmore RNG API is implemented in utils/yarandom.h. */
struct ModeInfo {
struct xlockmore_function_table *xlmft;
Display *dpy;
Window window;
Bool root_p;
int screen_number;
int npixels;
unsigned long *pixels;
XColor *colors;
Bool writable_p;
unsigned long white;
unsigned long black;
XWindowAttributes xgwa;
GC gc;
long pause;
Bool fullrandom;
long cycles;
long batchcount;
long size;
Bool threed;
long threed_left_color;
long threed_right_color;
long threed_both_color;
long threed_none_color;
long threed_delta;
Bool wireframe_p;
Bool is_drawn;
eraser_state *eraser;
Bool needs_clear;
/* Used only by OpenGL programs, since FPS is tricky there. */
fps_state *fpst;
Bool fps_p;
unsigned long polygon_count; /* These values are for -fps display only */
double recursion_depth;
# ifdef HAVE_GL
# ifndef HAVE_JWXYZ
GLXContext glx_context; /* or egl_data */
# endif
# ifdef HAVE_JWZGLES
jwzgles_state *jwzgles_state;
# endif
# endif /* HAVE_GL */
};
typedef enum { t_String, t_Float, t_Int, t_Bool } xlockmore_type;
typedef struct {
void *var;
char *name;
char *classname;
char *def;
xlockmore_type type;
} argtype;
typedef struct {
char *opt;
char *desc;
} OptionStruct;
typedef struct {
int numopts;
XrmOptionDescRec *opts;
int numvarsdesc;
argtype *vars;
OptionStruct *desc;
} ModeSpecOpt;
struct xlockmore_function_table {
const char *progclass;
const char *defaults;
Bool want_writable_colors;
enum { color_scheme_default, color_scheme_uniform,
color_scheme_smooth, color_scheme_bright }
desired_color_scheme;
void (*hack_init) (ModeInfo *);
void (*hack_draw) (ModeInfo *);
void (*hack_reshape) (ModeInfo *, int, int);
void (*hack_release) (ModeInfo *);
void (*hack_free) (ModeInfo *);
Bool (*hack_handle_events) (ModeInfo *, XEvent *);
ModeSpecOpt *opts;
# ifdef HAVE_JWZGLES /* set in xlock-gl-utils.c */
void (*jwzgles_make_current) (jwzgles_state *);
void (*jwzgles_free) (void);
# endif /* HAVE_JWZGLES */
void **state_array;
unsigned long live_displays, got_init;
};
#ifdef HAVE_JWXYZ
# define XLOCKMORE_NUM_SCREENS \
(sizeof(((struct xlockmore_function_table *)0)->live_displays) * 8)
#else
# define XLOCKMORE_NUM_SCREENS 2 /* For DEBUG_PAIR. */
#endif
#endif /* __XLOCKMORE_INTERNAL_H__ */
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