initial commit

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

libs/wxWidgets-3.3.1/include/wx/gtk/private/cairo.h

@@ -0,0 +1,55 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        wx/gtk/private/cairo.h
+// Purpose:     Cairo-related helpers
+// Author:      Vadim Zeitlin
+// Created:     2022-09-23
+// Copyright:   (c) 2022 Vadim Zeitlin <vadim@wxwidgets.org>
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_GTK_PRIVATE_CAIRO_H_
+#define _WX_GTK_PRIVATE_CAIRO_H_
+
+// ----------------------------------------------------------------------------
+// Redefine GDK function to avoiding deprecation warnings
+// ----------------------------------------------------------------------------
+
+wxGCC_WARNING_SUPPRESS(deprecated-declarations)
+
+static inline
+cairo_t* wx_gdk_cairo_create(GdkWindow* w) { return gdk_cairo_create(w); }
+#define gdk_cairo_create wx_gdk_cairo_create
+
+wxGCC_WARNING_RESTORE(deprecated-declarations)
+
+// ----------------------------------------------------------------------------
+// RAII helper creating a Cairo context in ctor and destroying it in dtor
+// ----------------------------------------------------------------------------
+
+namespace wxGTKImpl
+{
+
+class CairoContext
+{
+public:
+    explicit CairoContext(GdkWindow* window)
+        : m_cr(gdk_cairo_create(window))
+    {
+    }
+
+    ~CairoContext()
+    {
+        cairo_destroy(m_cr);
+    }
+
+    operator cairo_t*() const { return m_cr; }
+
+private:
+    cairo_t* const m_cr;
+
+    wxDECLARE_NO_COPY_CLASS(CairoContext);
+};
+
+} // namespace wxGTKImpl
+
+#endif // _WX_GTK_PRIVATE_CAIRO_H_