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-rw-r--r--hacks/deluxe.c465
1 files changed, 465 insertions, 0 deletions
diff --git a/hacks/deluxe.c b/hacks/deluxe.c
new file mode 100644
index 0000000..694a982
--- /dev/null
+++ b/hacks/deluxe.c
@@ -0,0 +1,465 @@
+/* xscreensaver, Copyright (c) 1999-2018 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.
+ */
+
+#include <math.h>
+#include "screenhack.h"
+#include "alpha.h"
+
+#ifdef HAVE_DOUBLE_BUFFER_EXTENSION
+# include "xdbe.h"
+#endif /* HAVE_DOUBLE_BUFFER_EXTENSION */
+
+#define countof(x) (sizeof(x)/sizeof(*(x)))
+#define ABS(x) ((x)<0?-(x):(x))
+
+struct state {
+ Display *dpy;
+ Window window;
+
+ Bool transparent_p;
+ int nplanes;
+ unsigned long base_pixel, *plane_masks;
+
+ int count;
+ int delay;
+ int ncolors;
+ Bool dbuf;
+ XColor *colors;
+ GC erase_gc;
+ struct throbber **throbbers;
+ XWindowAttributes xgwa;
+ Pixmap b, ba, bb; /* double-buffer to reduce flicker */
+
+# ifdef HAVE_DOUBLE_BUFFER_EXTENSION
+ Bool dbeclear_p;
+ XdbeBackBuffer backb;
+# endif /* HAVE_DOUBLE_BUFFER_EXTENSION */
+};
+
+struct throbber {
+ int x, y;
+ int size;
+ int max_size;
+ int thickness;
+ int speed;
+ int fuse;
+ GC gc;
+ void (*draw) (struct state *, Drawable, struct throbber *);
+};
+
+
+static void
+draw_star (struct state *st, Drawable w, struct throbber *t)
+{
+ XPoint points[11];
+ int x = t->x;
+ int y = t->y;
+
+ /*
+ The following constant is really:
+ sqrt(5 - sqrt(5)) / sqrt(25 - 11 * sqrt(5))
+
+ Reference: http://mathworld.wolfram.com/Pentagram.html
+ */
+ int s = t->size * 2.6180339887498985;
+ int s2 = t->size;
+ double c = M_PI * 2;
+ double o = -M_PI / 2;
+
+ points[0].x = x + s * cos(o + 0.0*c); points[0].y = y + s * sin(o + 0.0*c);
+ points[1].x = x + s2 * cos(o + 0.1*c); points[1].y = y + s2 * sin(o + 0.1*c);
+ points[2].x = x + s * cos(o + 0.2*c); points[2].y = y + s * sin(o + 0.2*c);
+ points[3].x = x + s2 * cos(o + 0.3*c); points[3].y = y + s2 * sin(o + 0.3*c);
+ points[4].x = x + s * cos(o + 0.4*c); points[4].y = y + s * sin(o + 0.4*c);
+ points[5].x = x + s2 * cos(o + 0.5*c); points[5].y = y + s2 * sin(o + 0.5*c);
+ points[6].x = x + s * cos(o + 0.6*c); points[6].y = y + s * sin(o + 0.6*c);
+ points[7].x = x + s2 * cos(o + 0.7*c); points[7].y = y + s2 * sin(o + 0.7*c);
+ points[8].x = x + s * cos(o + 0.8*c); points[8].y = y + s * sin(o + 0.8*c);
+ points[9].x = x + s2 * cos(o + 0.9*c); points[9].y = y + s2 * sin(o + 0.9*c);
+ points[10] = points[0];
+
+ XDrawLines (st->dpy, w, t->gc, points, countof(points), CoordModeOrigin);
+}
+
+static void
+draw_circle (struct state *st, Drawable w, struct throbber *t)
+{
+ XDrawArc (st->dpy, w, t->gc,
+ t->x - t->size / 2,
+ t->y - t->size / 2,
+ t->size, t->size,
+ 0, 360*64);
+}
+
+static void
+draw_hlines (struct state *st, Drawable w, struct throbber *t)
+{
+ XDrawLine (st->dpy, w, t->gc, 0,
+ t->y - t->size, t->max_size,
+ t->y - t->size);
+ XDrawLine (st->dpy, w, t->gc, 0,
+ t->y + t->size, t->max_size,
+ t->y + t->size);
+}
+
+static void
+draw_vlines (struct state *st, Drawable w, struct throbber *t)
+{
+ XDrawLine (st->dpy, w, t->gc,
+ t->x - t->size, 0,
+ t->x - t->size, t->max_size);
+ XDrawLine (st->dpy, w, t->gc,
+ t->x + t->size, 0,
+ t->x + t->size, t->max_size);
+}
+
+static void
+draw_corners (struct state *st, Drawable w, struct throbber *t)
+{
+ int s = (t->size + t->thickness) / 2;
+ XPoint points[3];
+
+ if (t->y > s)
+ {
+ points[0].x = 0; points[0].y = t->y - s;
+ points[1].x = t->x - s; points[1].y = t->y - s;
+ points[2].x = t->x - s; points[2].y = 0;
+ XDrawLines (st->dpy, w, t->gc, points, countof(points), CoordModeOrigin);
+
+ points[0].x = t->x + s; points[0].y = 0;
+ points[1].x = t->x + s; points[1].y = t->y - s;
+ points[2].x = t->max_size; points[2].y = t->y - s;
+ XDrawLines (st->dpy, w, t->gc, points, countof(points), CoordModeOrigin);
+ }
+
+ if (t->x > s)
+ {
+ points[0].x = 0; points[0].y = t->y + s;
+ points[1].x = t->x - s; points[1].y = t->y + s;
+ points[2].x = t->x - s; points[2].y = t->max_size;
+ XDrawLines (st->dpy, w, t->gc, points, countof(points), CoordModeOrigin);
+
+ points[0].x = t->x + s; points[0].y = t->max_size;
+ points[1].x = t->x + s; points[1].y = t->y + s;
+ points[2].x = t->max_size; points[2].y = t->y + s;
+ XDrawLines (st->dpy, w, t->gc, points, countof(points), CoordModeOrigin);
+ }
+}
+
+
+static struct throbber *
+make_throbber (struct state *st, Drawable d, int w, int h, unsigned long pixel)
+{
+ XGCValues gcv;
+ unsigned long flags;
+ struct throbber *t = (struct throbber *) malloc (sizeof (*t));
+ t->x = w / 2;
+ t->y = h / 2;
+ t->max_size = (w > h ? w : h);
+ t->speed = get_integer_resource (st->dpy, "speed", "Speed");
+ t->fuse = 1 + (random() % 4);
+ t->thickness = get_integer_resource (st->dpy, "thickness", "Thickness");
+
+ if (st->xgwa.width > 2560) t->thickness *= 3; /* Retina displays */
+
+ if (t->speed < 0) t->speed = -t->speed;
+ t->speed += (((random() % t->speed) / 2) - (t->speed / 2));
+ if (t->speed > 0) t->speed = -t->speed;
+
+ flags = GCForeground;
+# ifndef HAVE_JWXYZ
+ if (st->transparent_p)
+ {
+ gcv.foreground = ~0L;
+ gcv.plane_mask = st->base_pixel | st->plane_masks[random() % st->nplanes];
+ flags |= GCPlaneMask;
+ }
+ else
+# endif /* !HAVE_JWXYZ */
+ {
+ gcv.foreground = pixel;
+ }
+
+ gcv.line_width = t->thickness;
+ gcv.cap_style = CapProjecting;
+ gcv.join_style = JoinMiter;
+
+ flags |= (GCLineWidth | GCCapStyle | GCJoinStyle);
+ t->gc = XCreateGC (st->dpy, d, flags, &gcv);
+
+# ifdef HAVE_JWXYZ
+ if (st->transparent_p)
+ {
+ /* give a non-opaque alpha to the color */
+ unsigned long pixel = gcv.foreground;
+ unsigned long amask = BlackPixelOfScreen (st->xgwa.screen);
+ unsigned long a = (0xCCCCCCCC & amask);
+ pixel = (pixel & (~amask)) | a;
+
+ jwxyz_XSetAlphaAllowed (st->dpy, t->gc, True);
+ XSetForeground (st->dpy, t->gc, pixel);
+ }
+# endif /* HAVE_JWXYZ */
+
+ switch (random() % 11) {
+ case 0: case 1: case 2: case 3: t->draw = draw_star; break;
+ case 4: case 5: case 6: case 7: t->draw = draw_circle; break;
+ case 8: t->draw = draw_hlines; break;
+ case 9: t->draw = draw_vlines; break;
+ case 10: t->draw = draw_corners; break;
+ default: abort(); break;
+ }
+
+ if (t->draw == draw_circle)
+ t->max_size *= 1.5;
+
+ if (random() % 4)
+ t->size = t->max_size;
+ else
+ t->size = t->thickness, t->speed = -t->speed;
+
+ return t;
+}
+
+static int
+throb (struct state *st, Drawable window, struct throbber *t)
+{
+ t->size += t->speed;
+ if (t->size <= (t->thickness / 2))
+ {
+ t->speed = -t->speed;
+ t->size += (t->speed * 2);
+ }
+ else if (t->size > t->max_size)
+ {
+ t->speed = -t->speed;
+ t->size += (t->speed * 2);
+ t->fuse--;
+ }
+
+ if (t->fuse <= 0)
+ {
+ XFreeGC (st->dpy, t->gc);
+ memset (t, 0, sizeof(*t));
+ free (t);
+ return -1;
+ }
+ else
+ {
+ t->draw (st, window, t);
+ return 0;
+ }
+}
+
+
+static void *
+deluxe_init (Display *dpy, Window window)
+{
+ struct state *st = (struct state *) calloc (1, sizeof(*st));
+ XGCValues gcv;
+ int i;
+ st->dpy = dpy;
+ st->window = window;
+ st->count = get_integer_resource (st->dpy, "count", "Integer");
+ st->delay = get_integer_resource (st->dpy, "delay", "Integer");
+ st->ncolors = get_integer_resource (st->dpy, "ncolors", "Integer");
+ st->dbuf = get_boolean_resource (st->dpy, "doubleBuffer", "Boolean");
+
+# ifdef HAVE_DOUBLE_BUFFER_EXTENSION
+ st->dbeclear_p = get_boolean_resource (st->dpy, "useDBEClear", "Boolean");
+#endif
+
+# ifdef HAVE_JWXYZ /* Don't second-guess Quartz's double-buffering */
+ st->dbuf = False;
+# endif
+
+ XGetWindowAttributes (st->dpy, st->window, &st->xgwa);
+
+ st->transparent_p = get_boolean_resource(st->dpy, "transparent", "Transparent");
+
+ st->colors = (XColor *) calloc (sizeof(*st->colors), st->ncolors);
+
+ if (get_boolean_resource(st->dpy, "mono", "Boolean"))
+ {
+ MONO:
+ st->ncolors = 1;
+ st->colors[0].pixel = get_pixel_resource(st->dpy, st->xgwa.colormap,
+ "foreground", "Foreground");
+ }
+#ifndef HAVE_JWXYZ
+ else if (st->transparent_p)
+ {
+ st->nplanes = get_integer_resource (st->dpy, "planes", "Planes");
+ if (st->nplanes <= 0)
+ st->nplanes = (random() % (st->xgwa.depth-2)) + 2;
+
+ allocate_alpha_colors (st->xgwa.screen, st->xgwa.visual, st->xgwa.colormap,
+ &st->nplanes, True, &st->plane_masks,
+ &st->base_pixel);
+ if (st->nplanes <= 1)
+ {
+# if 0
+ fprintf (stderr,
+ "%s: couldn't allocate any color planes; turning transparency off.\n",
+ progname);
+# endif
+ st->transparent_p = False;
+ goto COLOR;
+ }
+ }
+#endif /* !HAVE_JWXYZ */
+ else
+ {
+#ifndef HAVE_JWXYZ
+ COLOR:
+#endif
+ make_random_colormap (st->xgwa.screen, st->xgwa.visual, st->xgwa.colormap,
+ st->colors, &st->ncolors, True, True, 0, True);
+ if (st->ncolors < 2)
+ goto MONO;
+ }
+
+ if (st->dbuf)
+ {
+#ifdef HAVE_DOUBLE_BUFFER_EXTENSION
+ if (st->dbeclear_p)
+ st->b = xdbe_get_backbuffer (st->dpy, st->window, XdbeBackground);
+ else
+ st->b = xdbe_get_backbuffer (st->dpy, st->window, XdbeUndefined);
+ st->backb = st->b;
+#endif /* HAVE_DOUBLE_BUFFER_EXTENSION */
+
+ if (!st->b)
+ {
+ st->ba = XCreatePixmap (st->dpy, st->window, st->xgwa.width, st->xgwa.height,st->xgwa.depth);
+ st->bb = XCreatePixmap (st->dpy, st->window, st->xgwa.width, st->xgwa.height,st->xgwa.depth);
+ st->b = st->ba;
+ }
+ }
+ else
+ {
+ st->b = st->window;
+ }
+
+ st->throbbers = (struct throbber **) calloc (st->count, sizeof(struct throbber *));
+ for (i = 0; i < st->count; i++)
+ st->throbbers[i] = make_throbber (st, st->b, st->xgwa.width, st->xgwa.height,
+ st->colors[random() % st->ncolors].pixel);
+
+ gcv.foreground = get_pixel_resource (st->dpy, st->xgwa.colormap,
+ "background", "Background");
+ st->erase_gc = XCreateGC (st->dpy, st->b, GCForeground, &gcv);
+
+ if (st->ba) XFillRectangle (st->dpy, st->ba, st->erase_gc, 0, 0, st->xgwa.width, st->xgwa.height);
+ if (st->bb) XFillRectangle (st->dpy, st->bb, st->erase_gc, 0, 0, st->xgwa.width, st->xgwa.height);
+
+ return st;
+}
+
+static unsigned long
+deluxe_draw (Display *dpy, Window window, void *closure)
+{
+ struct state *st = (struct state *) closure;
+ int i;
+#ifdef HAVE_DOUBLE_BUFFER_EXTENSION
+ if (!st->dbeclear_p || !st->backb)
+#endif /* HAVE_DOUBLE_BUFFER_EXTENSION */
+ XFillRectangle (st->dpy, st->b, st->erase_gc, 0, 0, st->xgwa.width, st->xgwa.height);
+
+ for (i = 0; i < st->count; i++)
+ if (throb (st, st->b, st->throbbers[i]) < 0)
+ st->throbbers[i] = make_throbber (st, st->b, st->xgwa.width, st->xgwa.height,
+ st->colors[random() % st->ncolors].pixel);
+
+#ifdef HAVE_DOUBLE_BUFFER_EXTENSION
+ if (st->backb)
+ {
+ XdbeSwapInfo info[1];
+ info[0].swap_window = st->window;
+ info[0].swap_action = (st->dbeclear_p ? XdbeBackground : XdbeUndefined);
+ XdbeSwapBuffers (st->dpy, info, 1);
+ }
+ else
+#endif /* HAVE_DOUBLE_BUFFER_EXTENSION */
+ if (st->dbuf)
+ {
+ XCopyArea (st->dpy, st->b, st->window, st->erase_gc, 0, 0,
+ st->xgwa.width, st->xgwa.height, 0, 0);
+ st->b = (st->b == st->ba ? st->bb : st->ba);
+ }
+
+ return st->delay;
+}
+
+static void
+deluxe_reshape (Display *dpy, Window window, void *closure,
+ unsigned int w, unsigned int h)
+{
+ struct state *st = (struct state *) closure;
+ if (! st->dbuf) { /* #### more complicated if we have a back buffer... */
+ int i;
+ XGetWindowAttributes (st->dpy, st->window, &st->xgwa);
+ XClearWindow (dpy, window);
+ for (i = 0; i < st->count; i++)
+ if (st->throbbers[i])
+ st->throbbers[i]->fuse = 0;
+ }
+}
+
+static Bool
+deluxe_event (Display *dpy, Window window, void *closure, XEvent *event)
+{
+ return False;
+}
+
+static void
+deluxe_free (Display *dpy, Window window, void *closure)
+{
+}
+
+
+static const char *deluxe_defaults [] = {
+ ".background: black",
+ ".foreground: white",
+ "*delay: 10000",
+ "*count: 5",
+ "*thickness: 50",
+ "*speed: 15",
+ "*ncolors: 20",
+ "*transparent: True",
+ "*doubleBuffer: True",
+#ifdef HAVE_DOUBLE_BUFFER_EXTENSION
+ "*useDBE: True",
+ "*useDBEClear: True",
+#endif /* HAVE_DOUBLE_BUFFER_EXTENSION */
+#ifdef HAVE_MOBILE
+ "*ignoreRotation: True",
+#endif
+ 0
+};
+
+static XrmOptionDescRec deluxe_options [] = {
+ { "-delay", ".delay", XrmoptionSepArg, 0 },
+ { "-thickness", ".thickness", XrmoptionSepArg, 0 },
+ { "-count", ".count", XrmoptionSepArg, 0 },
+ { "-ncolors", ".ncolors", XrmoptionSepArg, 0 },
+ { "-speed", ".speed", XrmoptionSepArg, 0 },
+ { "-transparent", ".transparent", XrmoptionNoArg, "True" },
+ { "-no-transparent", ".transparent", XrmoptionNoArg, "False" },
+ { "-opaque", ".transparent", XrmoptionNoArg, "False" },
+ { "-no-opaque", ".transparent", XrmoptionNoArg, "True" },
+ { "-db", ".doubleBuffer", XrmoptionNoArg, "True" },
+ { "-no-db", ".doubleBuffer", XrmoptionNoArg, "False" },
+ { 0, 0, 0, 0 }
+};
+
+
+XSCREENSAVER_MODULE ("Deluxe", deluxe)
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-05-18 05:20:51 +0200