vcl: ImplConvolute3() -> BitmapConvolutionMatrixFilter

Change-Id: I0203e98d29192ef098719c0a297b967710b8729a
Reviewed-on: https://gerrit.libreoffice.org/53097
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>

2 files changed, 38 insertions, 2 deletions

diff --git a/include/vcl/BitmapConvolutionMatrixFilter.hxx b/include/vcl/BitmapConvolutionMatrixFilter.hxx
new file mode 100644
index 000000000000..d27bfffb0fcd
--- /dev/null
+++ b/include/vcl/BitmapConvolutionMatrixFilter.hxx
@@ -0,0 +1,38 @@
+/* -*- 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_BITMAPCONVOLUTIONMATRIXFILTER_HXX
+#define INCLUDED_VCL_BITMAPCONVOLUTIONMATRIXFILTER_HXX
+
+#include <vcl/BitmapFilter.hxx>
+
+class BitmapEx;
+
+/** Filter image based on a 3x3 convolution matrix
+ */
+class VCL_DLLPUBLIC BitmapConvolutionMatrixFilter : public BitmapFilter
+{
+public:
+    BitmapConvolutionMatrixFilter(const long* pMatrix)
+        : mpMatrix(pMatrix)
+    {
+    }
+
+    ~BitmapConvolutionMatrixFilter() override { delete mpMatrix; }
+
+    virtual BitmapEx execute(BitmapEx const& rBitmapEx) override;
+
+private:
+    const long* mpMatrix;
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/include/vcl/bitmap.hxx b/include/vcl/bitmap.hxx
index 07573b1af1b0..df6d094a9886 100644
--- a/include/vcl/bitmap.hxx
+++ b/include/vcl/bitmap.hxx
@@ -658,8 +658,6 @@ public:
     SAL_DLLPRIVATE bool     ImplDitherFloyd();
     SAL_DLLPRIVATE bool     ImplDitherFloyd16();
 
-    SAL_DLLPRIVATE bool     ImplConvolute3( const long* pMatrix );
-
     SAL_DLLPRIVATE bool     ImplMedianFilter();
     SAL_DLLPRIVATE bool     ImplSobelGrey();
     SAL_DLLPRIVATE bool     ImplEmbossGrey( const BmpFilterParam* pFilterParam );