uniblock: darken the area above the block

README.md

@@ -3,7 +3,8 @@ blingful TUI library for modern terminal emulators. definitely not curses.
 
 by [nick black](https://nick-black.com/dankwiki/index.php/Hack_on) (<nickblack@linux.com>)
 
-for more information, see [my wiki](https://nick-black.com/dankwiki/index.php/Notcurses).
+for more information, see [my wiki](https://nick-black.com/dankwiki/index.php/Notcurses)
+and the [man pages](https://nick-black.com/notcurses).
 
 <p align="center">
 <img width="640" height="242" src="doc/0.4.0-sheet.png" alt="notcurses 0.4.0 contact sheet"/>

src/demo/unicodeblocks.c

@@ -163,12 +163,22 @@ int unicodeblocks_demo(struct notcurses* nc){
   struct timespec subdelay;
   uint64_t nstotal = timespec_to_ns(&demodelay);
   ns_to_timespec(nstotal / 3, &subdelay);
+  struct ncplane* header = ncplane_aligned(notcurses_stdplane(nc), 2,
+                                           (CHUNKSIZE * 2) - 2, 1,
+                                           NCALIGN_CENTER, NULL);
+  if(header == NULL){
+    return -1;
+  }
+  cell c = CELL_TRIVIAL_INITIALIZER;
+  cell_set_fg_alpha(&c, CELL_ALPHA_BLEND);
+  cell_set_fg(&c, 0x004000);
+  ncplane_set_base(header, &c);
   for(sindex = 0 ; sindex < sizeof(blocks) / sizeof(*blocks) ; ++sindex){
     ncplane_set_bg_rgb(n, 0, 0, 0);
     uint32_t blockstart = blocks[sindex].start;
     const char* description = blocks[sindex].name;
-    ncplane_set_fg_rgb(n, 0xad, 0xd8, 0xe6);
-    if(ncplane_printf_aligned(n, 1, NCALIGN_CENTER, "Unicode points %05x–%05x", blockstart, blockstart + BLOCKSIZE) <= 0){
+    ncplane_set_fg_rgb(header, 0xbd, 0xe8, 0xf6);
+    if(ncplane_printf_aligned(header, 1, NCALIGN_CENTER, "Unicode points %05x–%05x", blockstart, blockstart + BLOCKSIZE) <= 0){
       return -1;
     }
     struct ncplane* nn;
@@ -199,5 +209,6 @@ int unicodeblocks_demo(struct notcurses* nc){
     // really, the vast majority of space is unused.
     blockstart += BLOCKSIZE;
   }
+  ncplane_destroy(header);
   return 0;
 }

src/demo/witherworm.c

@@ -454,7 +454,7 @@ int witherworm_demo(struct notcurses* nc){
     cell c;
     struct timespec screenend;
     clock_gettime(CLOCK_MONOTONIC, &screenend);
-    ns_to_timespec(timespec_to_ns(&screenend) + 4 * timespec_to_ns(&demodelay), &screenend);
+    ns_to_timespec(timespec_to_ns(&screenend) + 2 * timespec_to_ns(&demodelay), &screenend);
     do{ // (re)draw a screen
       const int start = starts[i];
       int step = steps[i];