From b38aa006143abd4f10b7ec32576f5ce2867fa975 Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Sun, 19 May 2024 21:23:37 +0200
Subject: Basic support for colours in binary STL.

---
 src/stl_binary_reader.cc | 36 ++++++++++++++++++++++++++++++++++--
 1 file changed, 34 insertions(+), 2 deletions(-)

(limited to 'src/stl_binary_reader.cc')

diff --git a/src/stl_binary_reader.cc b/src/stl_binary_reader.cc
index 35091f0..7b38065 100644
--- a/src/stl_binary_reader.cc
+++ b/src/stl_binary_reader.cc
@@ -248,14 +248,46 @@ void STLBinaryReader::read (shared_ptr<InputReader> reader)
 					break;
 				}
 
-				if (c >= 0x80 && c <= 0x83) {
-					/* Italic or underline control code */
+				if (c <= 0x07 || (c >= 0x80 && c <= 0x83)) {
+					/* Colour, italic or underline control code */
 					sub.text = utf_to_utf<char> (iso6937_to_utf16 (text.c_str()));
 					_subs.push_back (sub);
 					text.clear ();
 				}
 
 				switch (c) {
+				case 0x0:
+					/* Black */
+					sub.colour = Colour(0, 0, 0);
+					break;
+				case 0x1:
+					/* Red */
+					sub.colour = Colour(1, 0, 0);
+					break;
+				case 0x2:
+					/* Lime */
+					sub.colour = Colour(0, 1, 0);
+					break;
+				case 0x3:
+					/* Yellow */
+					sub.colour = Colour(1, 1, 0);
+					break;
+				case 0x4:
+					/* Blue */
+					sub.colour = Colour(0, 0, 1);
+					break;
+				case 0x5:
+					/* Magenta */
+					sub.colour = Colour(1, 0, 1);
+					break;
+				case 0x6:
+					/* Cyan */
+					sub.colour = Colour(0, 1, 1);
+					break;
+				case 0x7:
+					/* White */
+					sub.colour = Colour(1, 1, 1);
+					break;
 				case 0x80:
 					italic = true;
 					break;
-- 
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