X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=hacks%2Fgreynetic.c;h=dc71f75015c27baa95d061817fa218360da9dee1;hb=d1ae2829ff0fd2a96c16a0c8c5420efaa47d7b30;hp=0f0747d17035ea1975115d1f25fb2c317968ee55;hpb=6a1da724858673ac40aa13a9612340d8bed8c7b9;p=xscreensaver diff --git a/hacks/greynetic.c b/hacks/greynetic.c index 0f0747d1..dc71f750 100644 --- a/hacks/greynetic.c +++ b/hacks/greynetic.c @@ -1,5 +1,4 @@ -/* xscreensaver, Copyright (c) 1992, 1995, 1996, 1997, 1998, 2003 - * Jamie Zawinski +/* xscreensaver, Copyright (c) 1992-2008 Jamie Zawinski * * Permission to use, copy, modify, distribute, and sell this software and its * documentation for any purpose is hereby granted without fee, provided that @@ -12,6 +11,10 @@ #include "screenhack.h" +#ifndef HAVE_COCOA +# define DO_STIPPLE +#endif + #define NBITS 12 /* On some systems (notably MacOS X) these files are messed up. @@ -31,6 +34,7 @@ * # include */ +#ifdef DO_STIPPLE #define stipple_width 16 #define stipple_height 4 static unsigned char stipple_bits[] = { @@ -82,37 +86,61 @@ static char vlines2_bits[] = { 0x01}; #define vlines3_height 1 static char vlines3_bits[] = { 0x02}; +#endif /* DO_STIPPLE */ +struct state { + Display *dpy; + Window window; + Pixmap pixmaps [NBITS]; -static Pixmap pixmaps [NBITS]; -static GC gc; -static int delay; -static unsigned long fg, bg, pixels [512]; -static int npixels; + GC gc; + int delay; + unsigned long fg, bg, pixels [512]; + int npixels; + int xlim, ylim; + Bool grey_p; + Colormap cmap; +}; -static void -init_greynetic (Display *dpy, Window window) + +static void * +greynetic_init (Display *dpy, Window window) { + struct state *st = (struct state *) calloc (1, sizeof(*st)); +# ifdef DO_STIPPLE int i; +# endif /* DO_STIPPLE */ XGCValues gcv; XWindowAttributes xgwa; - Colormap cmap; - XGetWindowAttributes (dpy, window, &xgwa); - cmap = xgwa.colormap; - npixels = 0; - gcv.foreground= fg= get_pixel_resource("foreground","Foreground", dpy, cmap); - gcv.background= bg= get_pixel_resource("background","Background", dpy, cmap); - gcv.fill_style= FillOpaqueStippled; - gc = XCreateGC (dpy, window, GCForeground|GCBackground|GCFillStyle, &gcv); + st->dpy = dpy; + st->window = window; + + XGetWindowAttributes (st->dpy, st->window, &xgwa); + st->xlim = xgwa.width; + st->ylim = xgwa.height; + st->cmap = xgwa.colormap; + st->npixels = 0; + st->grey_p = get_boolean_resource(st->dpy, "grey", "Boolean"); + gcv.foreground= st->fg= get_pixel_resource(st->dpy, st->cmap, "foreground","Foreground"); + gcv.background= st->bg= get_pixel_resource(st->dpy, st->cmap, "background","Background"); - delay = get_integer_resource ("delay", "Integer"); - if (delay < 0) delay = 0; + st->delay = get_integer_resource (st->dpy, "delay", "Integer"); + if (st->delay < 0) st->delay = 0; +# ifndef DO_STIPPLE + st->gc = XCreateGC (st->dpy, st->window, GCForeground, &gcv); +# ifdef HAVE_COCOA /* allow non-opaque alpha components in pixel values */ + jwxyz_XSetAlphaAllowed (st->dpy, st->gc, True); +# endif /* HAVE_COCOA */ +# else /* DO_STIPPLE */ + gcv.fill_style= FillOpaqueStippled; + st->gc = XCreateGC (st->dpy, st->window, GCForeground|GCBackground|GCFillStyle, &gcv); + i = 0; -#define BITS(n,w,h) \ - pixmaps [i++] = \ - XCreatePixmapFromBitmapData (dpy, window, (char *) n, w, h, 1, 0, 1) +# define BITS(n,w,h) \ + st->pixmaps [i++] = \ + XCreatePixmapFromBitmapData (st->dpy, st->window, (char *) n, w, h, 1, 0, 1) BITS (stipple_bits, stipple_width, stipple_height); BITS (cross_weave_bits, cross_weave_width, cross_weave_height); @@ -126,102 +154,140 @@ init_greynetic (Display *dpy, Window window) BITS (root_weave_bits, root_weave_width, root_weave_height); BITS (vlines2_bits, vlines2_width, vlines2_height); BITS (vlines3_bits, vlines3_width, vlines3_height); +# endif /* DO_STIPPLE */ + return st; } -static void -greynetic (Display *dpy, Window window) +static unsigned long +greynetic_draw (Display *dpy, Window window, void *closure) { - static int tick = 500, xlim, ylim; - static Colormap cmap; + struct state *st = (struct state *) closure; int x, y, w=0, h=0, i; XGCValues gcv; - if (tick++ == 500) - { - XWindowAttributes xgwa; - XGetWindowAttributes (dpy, window, &xgwa); - tick = 0; - xlim = xgwa.width; - ylim = xgwa.height; - cmap = xgwa.colormap; - } + for (i = 0; i < 10; i++) /* minimize area, but don't try too hard */ { - w = 50 + random () % (xlim - 50); - h = 50 + random () % (ylim - 50); - if (w + h < xlim && w + h < ylim) + w = 50 + random () % (st->xlim - 50); + h = 50 + random () % (st->ylim - 50); + if (w + h < st->xlim && w + h < st->ylim) break; } - x = random () % (xlim - w); - y = random () % (ylim - h); - gcv.stipple = pixmaps [random () % NBITS]; + x = random () % (st->xlim - w); + y = random () % (st->ylim - h); +# ifdef DO_STIPPLE + gcv.stipple = st->pixmaps [random () % NBITS]; +# endif /* !DO_STIPPLE */ if (mono_p) { MONO: if (random () & 1) - gcv.foreground = fg, gcv.background = bg; + gcv.foreground = st->fg, gcv.background = st->bg; else - gcv.foreground = bg, gcv.background = fg; + gcv.foreground = st->bg, gcv.background = st->fg; } else { XColor fgc, bgc; - if (npixels == sizeof (pixels) / sizeof (unsigned long)) + if (st->npixels == sizeof (st->pixels) / sizeof (unsigned long)) goto REUSE; fgc.flags = bgc.flags = DoRed|DoGreen|DoBlue; fgc.red = random (); fgc.green = random (); fgc.blue = random (); +# ifdef DO_STIPPLE bgc.red = random (); bgc.green = random (); bgc.blue = random (); - if (! XAllocColor (dpy, cmap, &fgc)) +# endif /* DO_STIPPLE */ + + if (st->grey_p) + { + fgc.green = fgc.blue = fgc.red; + bgc.green = bgc.blue = bgc.red; + } + + if (! XAllocColor (st->dpy, st->cmap, &fgc)) goto REUSE; - pixels [npixels++] = fgc.pixel; + st->pixels [st->npixels++] = fgc.pixel; gcv.foreground = fgc.pixel; - if (! XAllocColor (dpy, cmap, &bgc)) +# ifdef DO_STIPPLE + if (! XAllocColor (st->dpy, st->cmap, &bgc)) goto REUSE; - pixels [npixels++] = bgc.pixel; + st->pixels [st->npixels++] = bgc.pixel; gcv.background = bgc.pixel; +# endif /* DO_STIPPLE */ goto DONE; REUSE: - if (npixels <= 0) + if (st->npixels <= 0) { mono_p = 1; goto MONO; } - gcv.foreground = pixels [random () % npixels]; - gcv.background = pixels [random () % npixels]; + gcv.foreground = st->pixels [random () % st->npixels]; +# ifdef DO_STIPPLE + gcv.background = st->pixels [random () % st->npixels]; +# endif /* DO_STIPPLE */ DONE: ; + +# ifdef HAVE_COCOA + { + /* give a non-opaque alpha to the color */ + unsigned long pixel = gcv.foreground; + unsigned long amask = BlackPixel (dpy,0); + unsigned long a = (random() & amask); + pixel = (pixel & (~amask)) | a; + gcv.foreground = pixel; + } +# endif /* !HAVE_COCOA */ } - XChangeGC (dpy, gc, GCStipple|GCForeground|GCBackground, &gcv); - XFillRectangle (dpy, window, gc, x, y, w, h); - XSync (dpy, False); +# ifndef DO_STIPPLE + XChangeGC (st->dpy, st->gc, GCForeground, &gcv); +# else /* DO_STIPPLE */ + XChangeGC (st->dpy, st->gc, GCStipple|GCForeground|GCBackground, &gcv); +# endif /* DO_STIPPLE */ + XFillRectangle (st->dpy, st->window, st->gc, x, y, w, h); + return st->delay; } -char *progclass = "Greynetic"; - -char *defaults [] = { +static const char *greynetic_defaults [] = { ".background: black", ".foreground: white", + "*fpsSolid: true", "*delay: 10000", + "*grey: false", +#ifdef USE_IPHONE + "*ignoreRotation: True", +#endif 0 }; -XrmOptionDescRec options [] = { +static XrmOptionDescRec greynetic_options [] = { { "-delay", ".delay", XrmoptionSepArg, 0 }, + { "-grey", ".grey", XrmoptionNoArg, "True" }, { 0, 0, 0, 0 } }; -void -screenhack (Display *dpy, Window window) +static void +greynetic_reshape (Display *dpy, Window window, void *closure, + unsigned int w, unsigned int h) { - init_greynetic (dpy, window); - while (1) - { - greynetic (dpy, window); - screenhack_handle_events (dpy); - if (delay) usleep (delay); - } + struct state *st = (struct state *) closure; + st->xlim = w; + st->ylim = h; +} + +static Bool +greynetic_event (Display *dpy, Window window, void *closure, XEvent *event) +{ + return False; } + +static void +greynetic_free (Display *dpy, Window window, void *closure) +{ +} + +XSCREENSAVER_MODULE ("Greynetic", greynetic) +