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Diffstat (limited to 'include/vcl/BitmapBasicMorphologyFilter.hxx')
-rw-r--r-- | include/vcl/BitmapBasicMorphologyFilter.hxx | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/include/vcl/BitmapBasicMorphologyFilter.hxx b/include/vcl/BitmapBasicMorphologyFilter.hxx new file mode 100644 index 000000000..055e1e14e --- /dev/null +++ b/include/vcl/BitmapBasicMorphologyFilter.hxx @@ -0,0 +1,71 @@ +/* -*- 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_BITMAPBASICMORPHOLOGYFILTER_HXX +#define INCLUDED_VCL_BITMAPBASICMORPHOLOGYFILTER_HXX + +#include <vcl/bitmap.hxx> +#include <vcl/bitmapex.hxx> +#include <vcl/BitmapFilter.hxx> + +enum class BasicMorphologyOp +{ + erode, + dilate +}; + +/* Black is foreground, white is background */ +class VCL_DLLPUBLIC BitmapBasicMorphologyFilter : public BitmapFilter +{ +public: + BitmapBasicMorphologyFilter(BasicMorphologyOp op, sal_Int32 nRadius); + BitmapBasicMorphologyFilter(BasicMorphologyOp op, sal_Int32 nRadius, sal_uInt8 nValueOutside); + virtual ~BitmapBasicMorphologyFilter(); + + virtual BitmapEx execute(BitmapEx const& rBitmap) const override; + +private: + Bitmap filter(Bitmap const& rBitmap) const; + + BasicMorphologyOp m_eOp; + sal_Int32 m_nRadius; + sal_uInt8 m_nValueOutside = 0; + bool m_bUseValueOutside = false; +}; + +class BitmapErodeFilter final : public BitmapBasicMorphologyFilter +{ +public: + BitmapErodeFilter(sal_Int32 nRadius) + : BitmapBasicMorphologyFilter(BasicMorphologyOp::erode, nRadius) + { + } + BitmapErodeFilter(sal_Int32 nRadius, sal_uInt8 nValueOutside) + : BitmapBasicMorphologyFilter(BasicMorphologyOp::erode, nRadius, nValueOutside) + { + } +}; + +class BitmapDilateFilter final : public BitmapBasicMorphologyFilter +{ +public: + BitmapDilateFilter(sal_Int32 nRadius) + : BitmapBasicMorphologyFilter(BasicMorphologyOp::dilate, nRadius) + { + } + BitmapDilateFilter(sal_Int32 nRadius, sal_uInt8 nValueOutside) + : BitmapBasicMorphologyFilter(BasicMorphologyOp::dilate, nRadius, nValueOutside) + { + } +}; + +#endif // INCLUDED_VCL_BITMAPBASICMORPHOLOGYFILTER_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |