1 files changed, 78 insertions, 2 deletions

diff --git a/extension/src/openvic-extension/classes/GUIPieChart.cpp b/extension/src/openvic-extension/classes/GUIPieChart.cpp
index a8ed087..0688dd3 100644
--- a/extension/src/openvic-extension/classes/GUIPieChart.cpp
+++ b/extension/src/openvic-extension/classes/GUIPieChart.cpp
@@ -1,11 +1,51 @@
 #include "GUIPieChart.hpp"
 
+#include <godot_cpp/classes/input_event_mouse_motion.hpp>
+
+#include "openvic-extension/classes/GUILabel.hpp"
+#include "openvic-extension/singletons/MenuSingleton.hpp"
 #include "openvic-extension/utility/ClassBindings.hpp"
 
 using namespace godot;
 using namespace OpenVic;
 using namespace OpenVic::Utilities::literals;
 
+void GUIPieChart::_update_tooltip() {
+	MenuSingleton* menu_singleton = MenuSingleton::get_singleton();
+	ERR_FAIL_NULL(menu_singleton);
+
+	if (gfx_pie_chart_texture.is_valid()) {
+		GFXPieChartTexture::slice_t const* slice = gfx_pie_chart_texture->get_slice(tooltip_position);
+
+		if (slice != nullptr) {
+			static const String tooltip_identifier_key = "ID";
+			static const String tooltip_percent_key = "PC";
+			// "§Y$ID$§!: $PC$%"
+			static const String tooltip_string =
+				GUILabel::get_colour_marker() + String { "Y" } + GUILabel::get_substitution_marker() + tooltip_identifier_key
+				+ GUILabel::get_substitution_marker() + GUILabel::get_colour_marker() + "!: "
+				+ GUILabel::get_substitution_marker() + tooltip_percent_key + GUILabel::get_substitution_marker() + "%";
+
+			Dictionary substitution_dict;
+			substitution_dict[tooltip_identifier_key] = slice->name;
+
+			float percent = slice->weight * 100.0f;
+			if (gfx_pie_chart_texture->get_total_weight() > 0.0f) {
+				percent /= gfx_pie_chart_texture->get_total_weight();
+			}
+			substitution_dict[tooltip_percent_key] = Utilities::float_to_string_dp(percent, 2);
+
+			menu_singleton->show_control_tooltip(tooltip_string, substitution_dict, this);
+
+			tooltip_active = true;
+			return;
+		}
+	}
+
+	menu_singleton->hide_tooltip();
+	tooltip_active = false;
+}
+
 void GUIPieChart::_bind_methods() {
 	OV_BIND_METHOD(GUIPieChart::get_gfx_pie_chart_texture);
 	OV_BIND_METHOD(GUIPieChart::set_gfx_pie_chart_name, { "gfx_pie_chart_name" });
@@ -13,6 +53,28 @@ void GUIPieChart::_bind_methods() {
 	OV_BIND_METHOD(GUIPieChart::set_slices_array, { "new_slices" });
 }
 
+static const Vector2 disabled_tooltip_position { -1.0_real, -1.0_real };
+
+void GUIPieChart::_notification(int what) {
+	if (what == NOTIFICATION_MOUSE_EXIT_SELF) {
+		tooltip_position = disabled_tooltip_position;
+
+		_update_tooltip();
+	}
+}
+
+void GUIPieChart::_gui_input(Ref<InputEvent> const& event) {
+	Ref<InputEventMouseMotion> mm = event;
+
+	if (mm.is_valid()) {
+		tooltip_position = mm->get_position() * 2.0_real / get_size() - Vector2 { 1.0_real, 1.0_real };
+
+		_update_tooltip();
+	}
+}
+
+GUIPieChart::GUIPieChart() : tooltip_active { false }, tooltip_position { disabled_tooltip_position } {}
+
 Error GUIPieChart::set_gfx_pie_chart(GFX::PieChart const* gfx_pie_chart) {
 	const bool needs_setting = gfx_pie_chart_texture.is_null();
 
@@ -27,6 +89,10 @@ Error GUIPieChart::set_gfx_pie_chart(GFX::PieChart const* gfx_pie_chart) {
 		set_texture(gfx_pie_chart_texture);
 	}
 
+	if (tooltip_active) {
+		_update_tooltip();
+	}
+
 	return err;
 }
 
@@ -50,6 +116,10 @@ Error GUIPieChart::set_gfx_pie_chart_name(String const& gfx_pie_chart_name) {
 		set_texture(gfx_pie_chart_texture);
 	}
 
+	if (tooltip_active) {
+		_update_tooltip();
+	}
+
 	return err;
 }
 
@@ -59,8 +129,14 @@ String GUIPieChart::get_gfx_pie_chart_name() const {
 	return gfx_pie_chart_texture->get_gfx_pie_chart_name();
 }
 
-Error GUIPieChart::set_slices_array(GFXPieChartTexture::godot_pie_chart_data_t const& new_slices) const {
+Error GUIPieChart::set_slices_array(GFXPieChartTexture::godot_pie_chart_data_t const& new_slices) {
 	ERR_FAIL_NULL_V(gfx_pie_chart_texture, FAILED);
 
-	return gfx_pie_chart_texture->set_slices_array(new_slices);
+	const Error err = gfx_pie_chart_texture->set_slices_array(new_slices);
+
+	if (tooltip_active) {
+		_update_tooltip();
+	}
+
+	return err;
 }