Added iOS implementation for Clipboard API

NOTE this implementation was not tested, nor even compiled!

src/SFML/Window/iOS/ClipboardImpl.hpp

@@ -0,0 +1,78 @@
+////////////////////////////////////////////////////////////
+//
+// SFML - Simple and Fast Multimedia Library
+// Copyright (C) 2007-2017 Laurent Gomila (laurent@sfml-dev.org)
+//
+// This software is provided 'as-is', without any express or implied warranty.
+// In no event will the authors be held liable for any damages arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it freely,
+// subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented;
+//    you must not claim that you wrote the original software.
+//    If you use this software in a product, an acknowledgment
+//    in the product documentation would be appreciated but is not required.
+//
+// 2. Altered source versions must be plainly marked as such,
+//    and must not be misrepresented as being the original software.
+//
+// 3. This notice may not be removed or altered from any source distribution.
+//
+////////////////////////////////////////////////////////////
+
+#ifndef SFML_CLIPBOARDIMPLIOS_HPP
+#define SFML_CLIPBOARDIMPLIOS_HPP
+
+////////////////////////////////////////////////////////////
+// Headers
+////////////////////////////////////////////////////////////
+#include <SFML/System/String.hpp>
+
+
+namespace sf
+{
+namespace priv
+{
+
+////////////////////////////////////////////////////////////
+/// \brief Give access to the system clipboard
+///
+////////////////////////////////////////////////////////////
+class ClipboardImpl
+{
+public:
+
+    ////////////////////////////////////////////////////////////
+    /// \brief Get the content of the clipboard as string data
+    ///
+    /// This function returns the content of the clipboard
+    /// as a string. If the clipboard does not contain string
+    /// it returns an empty sf::String object.
+    ///
+    /// \return Current content of the clipboard
+    ///
+    ////////////////////////////////////////////////////////////
+    static String getString();
+
+    ////////////////////////////////////////////////////////////
+    /// \brief Set the content of the clipboard as string data
+    ///
+    /// This function sets the content of the clipboard as a
+    /// string.
+    ///
+    /// \param text sf::String object containing the data to be sent
+    /// to the clipboard
+    ///
+    ////////////////////////////////////////////////////////////
+    static void setString(const String& text);
+};
+
+} // namespace priv
+
+} // namespace sf
+
+
+#endif // SFML_CLIPBOARDIMPLIOS_HPP
+

src/SFML/Window/iOS/ClipboardImpl.mm

@@ -0,0 +1,72 @@
+////////////////////////////////////////////////////////////
+//
+// SFML - Simple and Fast Multimedia Library
+// Copyright (C) 2007-2017 Laurent Gomila (laurent@sfml-dev.org)
+//
+// This software is provided 'as-is', without any express or implied warranty.
+// In no event will the authors be held liable for any damages arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it freely,
+// subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented;
+//    you must not claim that you wrote the original software.
+//    If you use this software in a product, an acknowledgment
+//    in the product documentation would be appreciated but is not required.
+//
+// 2. Altered source versions must be plainly marked as such,
+//    and must not be misrepresented as being the original software.
+//
+// 3. This notice may not be removed or altered from any source distribution.
+//
+////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////
+// Headers
+////////////////////////////////////////////////////////////
+#include <SFML/Window/iOS/ClipboardImpl.hpp>
+
+@import UIKit
+
+namespace sf
+{
+namespace priv
+{
+
+////////////////////////////////////////////////////////////
+String ClipboardImpl::getString()
+{
+    UIPasteboard* pboard = [UIPasteboard generalPasteboard];
+    if (pboard.hasStrings)
+    {
+        NSString* data = pboard.string
+
+        char const* utf8 = [data cStringUsingEncoding:NSUTF8StringEncoding];
+        NSUInteger length = [data lengthOfBytesUsingEncoding:NSUTF8StringEncoding];
+
+        return String::fromUtf8(utf8, utf8 + length);
+    }
+    else
+    {
+        return String();
+    }
+}
+
+
+////////////////////////////////////////////////////////////
+void ClipboardImpl::setString(const String& text)
+{
+    std::basic_string<Uint8> utf8 = text.toUtf8();
+    NSString* data = [[NSString alloc] initWithBytes:utf8.data()
+                                              length:utf8.length()
+                                            encoding:NSUTF8StringEncoding];
+
+    UIPasteboard* pboard = [UIPasteboard generalPasteboard];
+    pboard.string = data;
+}
+
+} // namespace priv
+
+} // namespace sf
+