From e1b36719796209bfe47320c493b708d27dab3f25 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mikko=20Syrj=C3=A4?= <mikko@3d-system.fi>
Date: Tue, 26 Feb 2019 22:33:42 +0200
Subject: Implemented raise and lower.

---
 symbol.cpp | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

(limited to 'symbol.cpp')

diff --git a/symbol.cpp b/symbol.cpp
index ea24933..32dd7d0 100644
--- a/symbol.cpp
+++ b/symbol.cpp
@@ -291,3 +291,29 @@ void SymEditSymbol::RotateSymbol(int dir)
 			rotate(item.Value, dir);
 	}
 }
+
+//! Raise or lower item.
+/*!
+	\param dir			Positive value raises, negative lowers.
+	\return				True for success.
+*/
+bool SymEditSymbol::RaiseItem(int dir)
+{
+	if ( !Items.empty() )
+	{
+		size_t index = static_cast<size_t>(ActiveIndex);
+		if ( dir > 0 && index < Items.size() - 1 )	// raise
+		{
+			std::swap(Items[index], Items[index + 1]);
+			++ActiveIndex;
+			return true;
+		}
+		if ( dir < 0 && index > 0 )		// lower
+		{
+			std::swap(Items[index - 1], Items[index]);
+			--ActiveIndex;
+			return true;
+		}
+	}
+	return false;
+}
-- 
cgit v1.2.3