From 32bc1c2f3334d4de83a26f86eb0855dff725a1b9 Mon Sep 17 00:00:00 2001
From: bruvzg <7645683+bruvzg@users.noreply.github.com>
Date: Mon, 22 Jul 2024 10:12:00 +0300
Subject: [Font Import] Detect pixel fonts and disable subpixel positioning.

---
 modules/text_server_adv/text_server_adv.cpp | 31 +++++++++++++++++++++++++++++
 modules/text_server_adv/text_server_adv.h   |  1 +
 2 files changed, 32 insertions(+)

(limited to 'modules/text_server_adv')

diff --git a/modules/text_server_adv/text_server_adv.cpp b/modules/text_server_adv/text_server_adv.cpp
index 499ddb703b..54a7c9ef8d 100644
--- a/modules/text_server_adv/text_server_adv.cpp
+++ b/modules/text_server_adv/text_server_adv.cpp
@@ -3528,6 +3528,37 @@ String TextServerAdvanced::_font_get_supported_chars(const RID &p_font_rid) cons
 	return chars;
 }
 
+PackedInt32Array TextServerAdvanced::_font_get_supported_glyphs(const RID &p_font_rid) const {
+	FontAdvanced *fd = _get_font_data(p_font_rid);
+	ERR_FAIL_NULL_V(fd, PackedInt32Array());
+
+	MutexLock lock(fd->mutex);
+	if (fd->cache.is_empty()) {
+		ERR_FAIL_COND_V(!_ensure_cache_for_size(fd, fd->msdf ? Vector2i(fd->msdf_source_size, 0) : Vector2i(16, 0)), PackedInt32Array());
+	}
+	FontForSizeAdvanced *at_size = fd->cache.begin()->value;
+
+	PackedInt32Array glyphs;
+#ifdef MODULE_FREETYPE_ENABLED
+	if (at_size && at_size->face) {
+		FT_UInt gindex;
+		FT_ULong charcode = FT_Get_First_Char(at_size->face, &gindex);
+		while (gindex != 0) {
+			glyphs.push_back(gindex);
+			charcode = FT_Get_Next_Char(at_size->face, charcode, &gindex);
+		}
+		return glyphs;
+	}
+#endif
+	if (at_size) {
+		const HashMap<int32_t, FontGlyph> &gl = at_size->glyph_map;
+		for (const KeyValue<int32_t, FontGlyph> &E : gl) {
+			glyphs.push_back(E.key);
+		}
+	}
+	return glyphs;
+}
+
 void TextServerAdvanced::_font_render_range(const RID &p_font_rid, const Vector2i &p_size, int64_t p_start, int64_t p_end) {
 	FontAdvanced *fd = _get_font_data(p_font_rid);
 	ERR_FAIL_NULL(fd);
diff --git a/modules/text_server_adv/text_server_adv.h b/modules/text_server_adv/text_server_adv.h
index 92bdb93bcf..fdebb8e4cd 100644
--- a/modules/text_server_adv/text_server_adv.h
+++ b/modules/text_server_adv/text_server_adv.h
@@ -871,6 +871,7 @@ public:
 
 	MODBIND2RC(bool, font_has_char, const RID &, int64_t);
 	MODBIND1RC(String, font_get_supported_chars, const RID &);
+	MODBIND1RC(PackedInt32Array, font_get_supported_glyphs, const RID &);
 
 	MODBIND4(font_render_range, const RID &, const Vector2i &, int64_t, int64_t);
 	MODBIND3(font_render_glyph, const RID &, const Vector2i &, int64_t);
-- 
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