include/vcl/BitmapMonochromeFilter.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  */
  10
  11 #ifndef INCLUDED_INCLUDE_VCL_BITMAPMONOCHROMEFILTER_HXX
  12 #define INCLUDED_INCLUDE_VCL_BITMAPMONOCHROMEFILTER_HXX
  13
  14 #include <tools/color.hxx>
  15
  16 #include <vcl/BitmapFilter.hxx>
  17
  18 class VCL_DLLPUBLIC BitmapMonochromeFilter : public BitmapFilter
  19 {
  20 public:
  21     /** Convert to 2 color bitmap.
  22
  23         Converts to a 2 color indexed bitmap - note that we don't change to black
  24         and white monochrome, but we pick the closest color to black and white in
  25         the bitmap.
  26
  27         @param cThreshold
  28         Luminance value that determines whether the colour should be black (or
  29         closest color to black) or white (or closest color to white).
  30
  31      */
  32     BitmapMonochromeFilter(sal_uInt8 cThreshold)
  33         : mcThreshold(cThreshold)
  34     {
  35     }
  36
  37     virtual BitmapEx execute(BitmapEx const& rBitmapEx) override;
  38
  39 private:
  40     sal_uInt8 mcThreshold;
  41 };
  42
  43 #endif
  44
  45 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */