From ec465820e8b5bdaee4d5dbe86b693936143eaae7 Mon Sep 17 00:00:00 2001
From: Bob Polis <rpb.polis@avans.nl>
Date: Sat, 24 Oct 2020 18:02:43 +0200
Subject: [PATCH] added ImageLock RAII class for SDL Surface locking

---
 ImageLock.cpp | 20 ++++++++++++++++++++
 ImageLock.hpp | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 52 insertions(+)
 create mode 100644 ImageLock.cpp
 create mode 100644 ImageLock.hpp

diff --git a/ImageLock.cpp b/ImageLock.cpp
new file mode 100644
index 0000000..fe9c9ee
--- /dev/null
+++ b/ImageLock.cpp
@@ -0,0 +1,20 @@
+//
+// ImageLock.cpp
+// libscgui
+//
+// Created by Bob Polis at 2020-10-24
+// Copyright (c) 2020 SwiftCoder. All rights reserved.
+//
+
+#include "ImageLock.hpp"
+#include "Image.hpp"
+
+using namespace sc::gui;
+
+ImageLock::ImageLock(const Image& image) : _image {image} {
+    SDL_LockSurface(image.surface());
+}
+
+ImageLock::~ImageLock() {
+    SDL_UnlockSurface(_image.surface());
+}
diff --git a/ImageLock.hpp b/ImageLock.hpp
new file mode 100644
index 0000000..17d9e1a
--- /dev/null
+++ b/ImageLock.hpp
@@ -0,0 +1,32 @@
+//
+// ImageLock.hpp
+// libscgui
+//
+// Created by Bob Polis at 2020-10-24
+// Copyright (c) 2020 SwiftCoder. All rights reserved.
+//
+
+#ifndef _ImageLock_H_
+#define _ImageLock_H_
+
+namespace sc {
+    namespace gui {
+        class Image;
+
+        class ImageLock {
+            public:
+                ImageLock(const Image& image);
+                ~ImageLock();
+
+                ImageLock(const ImageLock&) = delete;
+                ImageLock& operator=(const ImageLock&) = delete;
+                ImageLock(ImageLock&&) = delete;
+                ImageLock& operator=(ImageLock&&) = delete;
+
+            private:
+                const Image& _image;
+        };
+    }
+}
+
+#endif // _ImageLock_H_