keller demo: separate legend lines

src/demo/keller.c

@@ -30,9 +30,9 @@ visualize(struct notcurses* nc, struct ncvisual* ncv){
     const char* name = notcurses_str_blitter(bs[i]);
     int scalex, scaley, truey, truex;
     ncvisual_geom(nc, ncv, &vopts, &truey, &truex, &scaley, &scalex);
+    ncplane_putstr_aligned(vopts.n, ncplane_dim_y(vopts.n) / 2 - 3, NCALIGN_CENTER, name);
     ncplane_printf_aligned(vopts.n, ncplane_dim_y(vopts.n) / 2 - 1, NCALIGN_CENTER,
-                           "%dx%d", truex, truey);
-    ncplane_putstr_aligned(vopts.n, ncplane_dim_y(vopts.n) / 2, NCALIGN_CENTER, name);
+                           "%03dx%03d", truex, truey);
     ncplane_printf_aligned(vopts.n, ncplane_dim_y(vopts.n) / 2 + 1, NCALIGN_CENTER,
                            "%d:%d pixels -> cell", scalex, scaley);
     int ret = demo_render(nc);

src/lib/sixel.c

@@ -5,10 +5,12 @@ break_sixel_comps(unsigned char comps[static 3], uint32_t rgba, unsigned char ma
   comps[0] = (ncpixel_r(rgba) & mask) * 100 / 255;
   comps[1] = (ncpixel_g(rgba) & mask) * 100 / 255;
   comps[2] = (ncpixel_b(rgba) & mask) * 100 / 255;
+//fprintf(stderr, "%u %u %u\n", comps[0], comps[1], comps[2]);
 }
 
 // first pass: extract up to 256 sixelspace colors over arbitrarily many sixels
 // sixelspace is 0..100 corresponding to 0..255, lame =[
+// FIXME you can have more (or fewer) than 256 registers...detect?
 typedef struct colortable {
   int colors;
   int sixelcount;