#include <math.h>
#include "screenhack.h"
+#include "alpha.h"
#ifdef HAVE_DOUBLE_BUFFER_EXTENSION
# include "xdbe.h"
#define countof(x) (sizeof(x)/sizeof(*(x)))
#define ABS(x) ((x)<0?-(x):(x))
+static Bool transparent_p;
+static int nplanes;
+static unsigned long base_pixel, *plane_masks;
+
struct throbber {
int x, y;
int size;
make_throbber (Display *dpy, 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;
else
t->size = t->thickness, t->speed = -t->speed;
- gcv.foreground = pixel;
+ flags = GCForeground;
+ if (transparent_p)
+ {
+ gcv.foreground = ~0L;
+ gcv.plane_mask = base_pixel | plane_masks[random() % nplanes];
+ flags |= GCPlaneMask;
+ }
+ else
+ {
+ gcv.foreground = pixel;
+ }
+
gcv.line_width = t->thickness;
gcv.line_style = LineSolid;
gcv.cap_style = CapProjecting;
gcv.join_style = JoinMiter;
- t->gc = XCreateGC (dpy, d,
- (GCForeground|GCLineWidth|GCLineStyle|
- GCCapStyle|GCJoinStyle),
- &gcv);
+
+ flags |= (GCLineWidth | GCLineStyle | GCCapStyle | GCJoinStyle);
+ t->gc = XCreateGC (dpy, d, flags, &gcv);
switch (random() % 11) {
case 0: case 1: case 2: case 3: t->draw = draw_star; break;
"*thickness: 50",
"*speed: 15",
"*ncolors: 20",
+ "*nlayers: 0",
+ "*transparent: False",
"*doubleBuffer: True",
#ifdef HAVE_DOUBLE_BUFFER_EXTENSION
"*useDBE: True",
{ "-count", ".count", XrmoptionSepArg, 0 },
{ "-ncolors", ".ncolors", XrmoptionSepArg, 0 },
{ "-speed", ".speed", XrmoptionSepArg, 0 },
+ { "-transparent", ".transparent", XrmoptionNoArg, "True" },
+ { "-opaque", ".transparent", XrmoptionNoArg, "False" },
{ "-db", ".doubleBuffer", XrmoptionNoArg, "True" },
{ "-no-db", ".doubleBuffer", XrmoptionNoArg, "False" },
{ 0, 0, 0, 0 }
XGetWindowAttributes (dpy, window, &xgwa);
+ transparent_p = get_boolean_resource("transparent", "Transparent");
+
if (get_boolean_resource("mono", "Boolean"))
{
MONO:
colors[0].pixel = get_pixel_resource("foreground", "Foreground",
dpy, xgwa.colormap);
}
+ else if (transparent_p)
+ {
+ nplanes = get_integer_resource ("planes", "Planes");
+ if (nplanes <= 0)
+ nplanes = (random() % (xgwa.depth-2)) + 2;
+
+ allocate_alpha_colors (xgwa.screen, xgwa.visual, xgwa.colormap,
+ &nplanes, True, &plane_masks,
+ &base_pixel);
+ if (nplanes <= 1)
+ {
+ fprintf (stderr,
+ "%s: couldn't allocate any color planes; turning transparency off.\n",
+ progname);
+ transparent_p = False;
+ goto COLOR;
+ }
+ }
else
{
+ COLOR:
make_random_colormap (dpy, xgwa.visual, xgwa.colormap,
colors, &ncolors, True, True, 0, True);
if (ncolors < 2)