From 407ca7d114bb9d40ede57ffc1375a22a5c72e0fa Mon Sep 17 00:00:00 2001
From: Witold Filipczyk <witekfl@poczta.onet.pl>
Date: Fri, 18 Mar 2022 16:24:48 +0100
Subject: [PATCH] [colors] Implemented displaying for 256 color mode

---
 src/bfu/style.c       | 31 +++++++++++++++++++++++++++++++
 src/bfu/style.h       |  2 ++
 src/terminal/screen.c | 15 +++++++++++++--
 3 files changed, 46 insertions(+), 2 deletions(-)

diff --git a/src/bfu/style.c b/src/bfu/style.c
index 4ff497c7..c5208f90 100644
--- a/src/bfu/style.c
+++ b/src/bfu/style.c
@@ -26,12 +26,43 @@ struct bfu_color_entry {
 	struct color_pair colors;
 
 	unsigned int node_number;
+
+	unsigned int was_color256_set:1;
+
+	struct screen_char c256;
+	struct screen_char c24;
 };
 
 struct bfu_color_entry *node_entries[1024];
 
 static struct hash *bfu_colors = NULL;
 
+unsigned char
+get_bfu_background_color256_node(unsigned int node_number)
+{
+	struct bfu_color_entry *entry = node_entries[node_number];
+
+	if (!entry->was_color256_set) {
+		set_term_color(&entry->c256, &entry->colors, 0, COLOR_MODE_256);
+		entry->was_color256_set = 1;
+	}
+
+	return TERM_COLOR_BACKGROUND_256(entry->c256.c.color);
+}
+
+unsigned char
+get_bfu_foreground_color256_node(unsigned int node_number)
+{
+	struct bfu_color_entry *entry = node_entries[node_number];
+
+	if (!entry->was_color256_set) {
+		set_term_color(&entry->c256, &entry->colors, 0, COLOR_MODE_256);
+		entry->was_color256_set = 1;
+	}
+
+	return TERM_COLOR_FOREGROUND_256(entry->c256.c.color);
+}
+
 static struct bfu_color_entry *
 get_bfu_color_common(struct terminal *term, const char *stylename)
 {
diff --git a/src/bfu/style.h b/src/bfu/style.h
index cf475db6..4741ccbd 100644
--- a/src/bfu/style.h
+++ b/src/bfu/style.h
@@ -27,6 +27,8 @@ get_bfu_color(struct terminal *term, const char *stylename);
 
 unsigned int get_bfu_color_node(struct terminal *term, const char *stylename);
 
+unsigned char get_bfu_background_color256_node(unsigned int node_number);
+unsigned char get_bfu_foreground_color256_node(unsigned int node_number);
 
 /** Cleanup after the BFU style cache
  *
diff --git a/src/terminal/screen.c b/src/terminal/screen.c
index 43a77e30..fda5b3f6 100644
--- a/src/terminal/screen.c
+++ b/src/terminal/screen.c
@@ -10,6 +10,7 @@
 
 #include "elinks.h"
 
+#include "bfu/style.h"
 #include "config/options.h"
 #include "intl/charsets.h"
 #include "main/module.h"
@@ -1067,14 +1068,24 @@ add_char_color(struct string *screen, const struct string *seq, unsigned char co
 static unsigned char
 get_background_color_from_node(struct screen_char *ch)
 {
-	/* TODO */
+	unsigned int node_number = ch->c.node_number;
+
+	if (node_number < 1024) {
+		return get_bfu_background_color256_node(node_number);
+	}
+
 	return ch->c.color[1];
 }
 
 static unsigned char
 get_foreground_color_from_node(struct screen_char *ch)
 {
-	/* TODO */
+	unsigned int node_number = ch->c.node_number;
+
+	if (node_number < 1024) {
+		return get_bfu_foreground_color256_node(node_number);
+	}
+
 	return ch->c.color[0];
 }