3824 - experiment: stop buffering in termbox

Now it's much more apparent why things are slow. You can see each repaint
happening. Already I fixed one performance bug -- in clear-rest-of-screen.

Since this subverts Mu's fake screen there may be bugs.

Another salubrious side effect: I've finally internalized that switching
to raw mode doesn't have to clear the screen. That was just an artifact
of how termbox abstracted operations. Now I can conceive of using termbox
to build a repl as well.

(I was inspired to poke into termbox internals by
http://viewsourcecode.org/snaptoken/kilo and
https://github.com/antirez/linenoise)

1 files changed, 4 insertions, 3 deletions

diff --git a/termbox/x.cc b/termbox/x.cc
index 73373818..5c7fb0a6 100644
--- a/termbox/x.cc
+++ b/termbox/x.cc
@@ -2,10 +2,11 @@
 #include"termbox.h"
 
 int main() {
-  tb_event event;
   tb_init();
-  tb_poll_event(&event);
+  tb_clear();
+  tb_change_cell(0, 0, 'a', TB_WHITE, TB_BLACK);
+  tb_event x;
+  tb_poll_event(&x);
   tb_shutdown();
-  std::cerr << (int)event.type << '\n';
   return 0;
 }