initial commit

Signed-off-by: Peter Siegmund <mars3142@noreply.mars3142.dev>

libs/wxWidgets-3.3.1/include/wx/unix/private/x11ptr.h

@@ -0,0 +1,67 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        wx/unix/private/x11ptr.h
+// Purpose:     Simple RAII helper for calling XFree() automatically
+// Author:      Vadim Zeitlin
+// Created:     2025-04-28
+// Copyright:   (c) 2025 Vadim Zeitlin <vadim@wxwidgets.org>
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_UNIX_PRIVATE_X11PTR_H_
+#define _WX_UNIX_PRIVATE_X11PTR_H_
+
+#include <X11/Xlib.h>
+
+// ----------------------------------------------------------------------------
+// Convenience class for calling XFree() automatically
+// ----------------------------------------------------------------------------
+
+template <typename T>
+class wxX11Ptr
+{
+public:
+    wxX11Ptr() = default;
+    explicit wxX11Ptr(const T *p) : m_ptr(const_cast<T*>(p)) { }
+    wxX11Ptr(wxX11Ptr&& other) : m_ptr(other.m_ptr) { other.m_ptr = nullptr; }
+    ~wxX11Ptr() { reset(); }
+
+    wxX11Ptr& operator=(wxX11Ptr&& other)
+    {
+        if ( &other != this )
+        {
+            reset(other.m_ptr);
+            other.m_ptr = nullptr;
+        }
+
+        return *this;
+    }
+
+    const T* get() const { return m_ptr; }
+
+    operator const T*() const { return m_ptr; }
+    T* operator->() const { return m_ptr; }
+
+    void reset(T* p = nullptr)
+    {
+        if ( m_ptr )
+            XFree(m_ptr);
+
+        m_ptr = p;
+    }
+
+    T** Out()
+    {
+        wxASSERT_MSG( !m_ptr, wxS("Can't reuse the same object.") );
+
+        return &m_ptr;
+    }
+
+private:
+    // We store the pointer as non-const because it avoids casts in the dtor
+    // and Out(), but it's actually always handled as a const one.
+    T* m_ptr = nullptr;
+
+    wxDECLARE_NO_COPY_CLASS(wxX11Ptr);
+};
+
+#endif // _WX_UNIX_PRIVATE_X11PTR_H_