From 55d2a48ff2443c8d7630df0724e1817188793e64 Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Sat, 30 Apr 2022 16:52:23 +0300
Subject: [PATCH] Support retrieving item y-range from ui::selector

---
 libs/ui/include/psemek/ui/selector.hpp |  2 ++
 libs/ui/source/selector.cpp            | 10 ++++++++++
 2 files changed, 12 insertions(+)

diff --git a/libs/ui/include/psemek/ui/selector.hpp b/libs/ui/include/psemek/ui/selector.hpp
index 5c753c5b..6dd8a8e1 100644
--- a/libs/ui/include/psemek/ui/selector.hpp
+++ b/libs/ui/include/psemek/ui/selector.hpp
@@ -31,6 +31,8 @@ namespace psemek::ui
 		virtual bool submenu(std::size_t index) const;
 		virtual void clear();
 
+		virtual geom::interval<float> y_range(std::size_t index) const;
+
 		virtual std::optional<std::size_t> selected() const { return selected_; }
 		virtual void on_selected(std::function<void(std::size_t)> callback);
 
diff --git a/libs/ui/source/selector.cpp b/libs/ui/source/selector.cpp
index 5926142b..76ede261 100644
--- a/libs/ui/source/selector.cpp
+++ b/libs/ui/source/selector.cpp
@@ -125,13 +125,17 @@ namespace psemek::ui
 	{
 		container_.resize(size);
 		submenu_.resize(size);
+		child_boxes_.resize(size);
 	}
 
 	void selector::add(std::shared_ptr<element> child, bool submenu)
 	{
 		std::size_t index = container_.add(child);
 		if (index >= submenu_.size())
+		{
 			submenu_.resize(index + 1);
+			child_boxes_.resize(submenu_.size());
+		}
 		submenu_[index] = submenu;
 	}
 
@@ -149,6 +153,12 @@ namespace psemek::ui
 	{
 		container_.clear();
 		submenu_.clear();
+		child_boxes_.clear();
+	}
+
+	geom::interval<float> selector::y_range(std::size_t index) const
+	{
+		return child_boxes_[index][1];
 	}
 
 	void selector::on_selected(std::function<void(std::size_t)> callback)