include/vcl/BitmapAlphaClampFilter.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 <vcl/BitmapFilter.hxx>
  15
  16 /** If the alpha is beyond a certain threshold, make it fully transparent
  17  */
  18 class VCL_DLLPUBLIC BitmapAlphaClampFilter final : public BitmapFilter
  19 {
  20 public:
  21     BitmapAlphaClampFilter(sal_uInt8 cThreshold)
  22         : mcThreshold(cThreshold)
  23     {
  24     }
  25
  26     virtual BitmapEx execute(BitmapEx const& rBitmapEx) const override;
  27
  28 private:
  29     sal_uInt8 const mcThreshold;
  30 };
  31
  32 #endif
  33
  34 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */