[Complex Text Layouts] Provide access to glyph contour points.

5 files changed, 38 insertions, 2 deletions

diff --git a/modules/text_server_adv/dynamic_font_adv.cpp b/modules/text_server_adv/dynamic_font_adv.cpp
index 2521e68dda..19d04bdb02 100644
--- a/modules/text_server_adv/dynamic_font_adv.cpp
+++ b/modules/text_server_adv/dynamic_font_adv.cpp
@@ -997,6 +997,29 @@ Vector2 DynamicFontDataAdvanced::draw_glyph_outline(RID p_canvas, int p_size, in
 	return advance;
 }
 
+bool DynamicFontDataAdvanced::get_glyph_contours(int p_size, uint32_t p_index, Vector<Vector3> &r_points, Vector<int32_t> &r_contours, bool &r_orientation) const {
+	_THREAD_SAFE_METHOD_
+	DataAtSize *fds = const_cast<DynamicFontDataAdvanced *>(this)->get_data_for_size(p_size);
+	ERR_FAIL_COND_V(fds == nullptr, false);
+
+	int error = FT_Load_Glyph(fds->face, p_index, FT_LOAD_NO_BITMAP | (force_autohinter ? FT_LOAD_FORCE_AUTOHINT : 0));
+	ERR_FAIL_COND_V(error, false);
+
+	r_points.clear();
+	r_contours.clear();
+
+	float h = fds->ascent;
+	float scale = (1.0 / 64.0) / oversampling * fds->scale_color_font;
+	for (short i = 0; i < fds->face->glyph->outline.n_points; i++) {
+		r_points.push_back(Vector3(fds->face->glyph->outline.points[i].x * scale, h - fds->face->glyph->outline.points[i].y * scale, FT_CURVE_TAG(fds->face->glyph->outline.tags[i])));
+	}
+	for (short i = 0; i < fds->face->glyph->outline.n_contours; i++) {
+		r_contours.push_back(fds->face->glyph->outline.contours[i]);
+	}
+	r_orientation = (FT_Outline_Get_Orientation(&fds->face->glyph->outline) == FT_ORIENTATION_FILL_RIGHT);
+	return true;
+}
+
 DynamicFontDataAdvanced::~DynamicFontDataAdvanced() {
 	clear_cache();
 	if (library != nullptr) {
diff --git a/modules/text_server_adv/dynamic_font_adv.h b/modules/text_server_adv/dynamic_font_adv.h
index d69a30b321..1292966f0c 100644
--- a/modules/text_server_adv/dynamic_font_adv.h
+++ b/modules/text_server_adv/dynamic_font_adv.h
@@ -186,6 +186,8 @@ public:
 	virtual Vector2 draw_glyph(RID p_canvas, int p_size, const Vector2 &p_pos, uint32_t p_index, const Color &p_color) const override;
 	virtual Vector2 draw_glyph_outline(RID p_canvas, int p_size, int p_outline_size, const Vector2 &p_pos, uint32_t p_index, const Color &p_color) const override;
 
+	virtual bool get_glyph_contours(int p_size, uint32_t p_index, Vector<Vector3> &r_points, Vector<int32_t> &r_contours, bool &r_orientation) const override;
+
 	virtual ~DynamicFontDataAdvanced() override;
 };
 
diff --git a/modules/text_server_adv/font_adv.h b/modules/text_server_adv/font_adv.h
index 2b6d977451..4fadefc569 100644
--- a/modules/text_server_adv/font_adv.h
+++ b/modules/text_server_adv/font_adv.h
@@ -92,8 +92,8 @@ struct FontDataAdvanced {
 	virtual bool has_outline() const = 0;
 	virtual float get_base_size() const = 0;
 
-	virtual bool is_lang_supported(const String &p_lang) const { return false; };
-	virtual bool is_script_supported(uint32_t p_script) const { return false; };
+	virtual bool is_lang_supported(const String &p_lang) const { return true; };
+	virtual bool is_script_supported(uint32_t p_script) const { return true; };
 
 	virtual bool has_char(char32_t p_char) const = 0;
 	virtual String get_supported_chars() const = 0;
@@ -107,6 +107,8 @@ struct FontDataAdvanced {
 	virtual Vector2 draw_glyph(RID p_canvas, int p_size, const Vector2 &p_pos, uint32_t p_index, const Color &p_color) const = 0;
 	virtual Vector2 draw_glyph_outline(RID p_canvas, int p_size, int p_outline_size, const Vector2 &p_pos, uint32_t p_index, const Color &p_color) const = 0;
 
+	virtual bool get_glyph_contours(int p_size, uint32_t p_index, Vector<Vector3> &r_points, Vector<int32_t> &r_contours, bool &r_orientation) const { return false; };
+
 	virtual ~FontDataAdvanced(){};
 };
 
diff --git a/modules/text_server_adv/text_server_adv.cpp b/modules/text_server_adv/text_server_adv.cpp
index 43b8f18101..9007c696eb 100644
--- a/modules/text_server_adv/text_server_adv.cpp
+++ b/modules/text_server_adv/text_server_adv.cpp
@@ -906,6 +906,13 @@ Vector2 TextServerAdvanced::font_draw_glyph_outline(RID p_font, RID p_canvas, in
 	return fd->draw_glyph_outline(p_canvas, p_size, p_outline_size, p_pos, p_index, p_color);
 }
 
+bool TextServerAdvanced::font_get_glyph_contours(RID p_font, int p_size, uint32_t p_index, Vector<Vector3> &r_points, Vector<int32_t> &r_contours, bool &r_orientation) const {
+	_THREAD_SAFE_METHOD_
+	const FontDataAdvanced *fd = font_owner.getornull(p_font);
+	ERR_FAIL_COND_V(!fd, false);
+	return fd->get_glyph_contours(p_size, p_index, r_points, r_contours, r_orientation);
+}
+
 float TextServerAdvanced::font_get_oversampling() const {
 	return oversampling;
 }
diff --git a/modules/text_server_adv/text_server_adv.h b/modules/text_server_adv/text_server_adv.h
index b53b5716e5..4ad23ca059 100644
--- a/modules/text_server_adv/text_server_adv.h
+++ b/modules/text_server_adv/text_server_adv.h
@@ -188,6 +188,8 @@ public:
 	virtual Vector2 font_draw_glyph(RID p_font, RID p_canvas, int p_size, const Vector2 &p_pos, uint32_t p_index, const Color &p_color = Color(1, 1, 1)) const override;
 	virtual Vector2 font_draw_glyph_outline(RID p_font, RID p_canvas, int p_size, int p_outline_size, const Vector2 &p_pos, uint32_t p_index, const Color &p_color = Color(1, 1, 1)) const override;
 
+	virtual bool font_get_glyph_contours(RID p_font, int p_size, uint32_t p_index, Vector<Vector3> &r_points, Vector<int32_t> &r_contours, bool &r_orientation) const override;
+
 	virtual float font_get_oversampling() const override;
 	virtual void font_set_oversampling(float p_oversampling) override;