tdf#106265 ScopedHDC to clean-up hDC when rendering glyphs

Change-Id: I96ecf625126740610200c012c3c7002fac7e1548
Reviewed-on: https://gerrit.libreoffice.org/37347
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>

1 files changed, 45 insertions, 0 deletions

diff --git a/vcl/inc/win/ScopedHDC.hxx b/vcl/inc/win/ScopedHDC.hxx
new file mode 100644
index 000000000000..bd4642ee6642
--- /dev/null
+++ b/vcl/inc/win/ScopedHDC.hxx
@@ -0,0 +1,45 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef INCLUDED_VCL_INC_WIN_SCOPEDHDC_HXX
+#define INCLUDED_VCL_INC_WIN_SCOPEDHDC_HXX
+
+class ScopedHDC
+{
+private:
+    HDC m_hDC;
+
+public:
+    explicit ScopedHDC(HDC hDC)
+        : m_hDC(hDC)
+    {}
+
+    ScopedHDC(const ScopedHDC&) = delete;
+    ScopedHDC& operator=(const ScopedHDC&) = delete;
+
+    ~ScopedHDC()
+    {
+        if (m_hDC)
+            DeleteDC(m_hDC);
+    }
+
+    HDC get() const
+    {
+        return m_hDC;
+    }
+
+    explicit operator bool() const
+    {
+        return m_hDC != nullptr;
+    }
+};
+
+#endif // INCLUDED_VCL_INC_WIN_SCOPEDHDC_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */