From dfcdd10cb577c0888ebfcb150d4b47b74519ec6a Mon Sep 17 00:00:00 2001
From: nick black <dankamongmen@gmail.com>
Date: Wed, 15 Jan 2020 06:25:13 -0500
Subject: [PATCH] more palette support/testing #230

---
 src/lib/internal.h  |  1 +
 src/lib/notcurses.c | 10 +++++++++-
 tests/palette.cpp   | 24 ++++++++++++++++++++++++
 3 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/src/lib/internal.h b/src/lib/internal.h
index ed777f7e1..c688b8f24 100644
--- a/src/lib/internal.h
+++ b/src/lib/internal.h
@@ -182,6 +182,7 @@ typedef struct notcurses {
   unsigned inputbuf_occupied;
   unsigned inputbuf_valid_starts;
   unsigned inputbuf_write_at;
+  palette256 palette; // 256-indexed palette can be used instead of RGB
   struct esctrie* inputescapes; // trie of input escapes -> ncspecial_keys
 } notcurses;
 
diff --git a/src/lib/notcurses.c b/src/lib/notcurses.c
index 8b01d0e6c..588c31d23 100644
--- a/src/lib/notcurses.c
+++ b/src/lib/notcurses.c
@@ -1646,8 +1646,16 @@ palette256* palette256_new(void){
 
 int palette256_use(notcurses* nc, const palette256* p){
   int ret = -1;
+  if(!nc->CCCflag){
+    return -1;
+  }
   pthread_mutex_lock(&nc->lock);
-  // FIXME load it
+  for(size_t z = 0 ; z < sizeof(p->chans) / sizeof(*p->chans) ; ++z){
+    if(nc->palette.chans[z] != p->chans[z]){
+      nc->palette.chans[z] = p->chans[z];
+      // FIXME write it to terminal using initc, need another damage map
+    }
+  }
   pthread_mutex_unlock(&nc->lock);
   return ret;
 }
diff --git a/tests/palette.cpp b/tests/palette.cpp
index 83d2b8034..33613a047 100644
--- a/tests/palette.cpp
+++ b/tests/palette.cpp
@@ -23,6 +23,30 @@ TEST_CASE("Palette256") {
     palette256_free(p);
   }
 
+  SUBCASE("SetIndexZero") {
+    palette256* p = palette256_new();
+    REQUIRE(nullptr != p);
+    palette256_set_rgb(p, 0, 0x80, 0x90, 0xa0);
+    unsigned r, g, b;
+    palette256_get(p, 0, &r, &g, &b);
+    CHECK(r == 0x80);
+    CHECK(g == 0x90);
+    CHECK(b == 0xa0);
+    palette256_free(p);
+  }
+
+  SUBCASE("SetIndex255") {
+    palette256* p = palette256_new();
+    REQUIRE(nullptr != p);
+    palette256_set_rgb(p, 255, 0xa0, 0x70, 0x50);
+    unsigned r, g, b;
+    palette256_get(p, 255, &r, &g, &b);
+    CHECK(r == 0xa0);
+    CHECK(g == 0x70);
+    CHECK(b == 0x50);
+    palette256_free(p);
+  }
+
   // common teardown
   CHECK(0 == notcurses_stop(nc_));
   CHECK(0 == fclose(outfp_));