From 81b8c138ba824a3f498dc3fc2a1800c6c488a4c1 Mon Sep 17 00:00:00 2001
From: Jan Haller <bromeon@gmail.com>
Date: Sun, 5 Jul 2020 15:54:12 +0200
Subject: [PATCH] Add move semantics to sf::Texture, using combined copy/move
 assignment operator

---
 include/SFML/Graphics/Texture.hpp | 21 +++++++++++++++------
 src/SFML/Graphics/Texture.cpp     | 14 ++++++++++----
 2 files changed, 25 insertions(+), 10 deletions(-)

diff --git a/include/SFML/Graphics/Texture.hpp b/include/SFML/Graphics/Texture.hpp
index 66035b45..8f12edc6 100644
--- a/include/SFML/Graphics/Texture.hpp
+++ b/include/SFML/Graphics/Texture.hpp
@@ -72,10 +72,19 @@ public:
     ////////////////////////////////////////////////////////////
     /// \brief Copy constructor
     ///
-    /// \param copy instance to copy
+    /// \param copied instance to copy
     ///
     ////////////////////////////////////////////////////////////
-    Texture(const Texture& copy);
+    Texture(const Texture& copied);
+
+    ////////////////////////////////////////////////////////////
+    /// \brief Move constructor
+    ///
+    /// \param moved instance to move from. Behaves like a
+    ///              default-constructed object after the move.
+    ///
+    ////////////////////////////////////////////////////////////
+    Texture(Texture&& moved) noexcept;
 
     ////////////////////////////////////////////////////////////
     /// \brief Destructor
@@ -507,16 +516,16 @@ public:
     ///
     ////////////////////////////////////////////////////////////
     bool generateMipmap();
-
+    
     ////////////////////////////////////////////////////////////
-    /// \brief Overload of assignment operator
+    /// \brief Combined copy/move assignment operator
     ///
-    /// \param right Instance to assign
+    /// \param right Instance to assign (copied or moved)
     ///
     /// \return Reference to self
     ///
     ////////////////////////////////////////////////////////////
-    Texture& operator =(const Texture& right);
+    Texture& operator =(Texture right);
 
     ////////////////////////////////////////////////////////////
     /// \brief Swap the contents of this texture with those of another
diff --git a/src/SFML/Graphics/Texture.cpp b/src/SFML/Graphics/Texture.cpp
index a139115d..ce52ec80 100644
--- a/src/SFML/Graphics/Texture.cpp
+++ b/src/SFML/Graphics/Texture.cpp
@@ -101,6 +101,14 @@ m_cacheId      (getUniqueId())
 }
 
 
+////////////////////////////////////////////////////////////
+Texture::Texture(Texture&& moved) noexcept :
+Texture()
+{
+    swap(moved);
+}
+
+
 ////////////////////////////////////////////////////////////
 Texture::~Texture()
 {
@@ -809,11 +817,9 @@ unsigned int Texture::getMaximumSize()
 
 
 ////////////////////////////////////////////////////////////
-Texture& Texture::operator =(const Texture& right)
+Texture& Texture::operator =(Texture right)
 {
-    Texture temp(right);
-
-    swap(temp);
+    swap(right);
 
     return *this;
 }