include/vcl/bitmap/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 #pragma once
  12
  13 #include <vcl/bitmap/BitmapFilter.hxx>
  14
  15 /** If the alpha is beyond a certain threshold, make it fully transparent
  16  */
  17 class VCL_DLLPUBLIC BitmapAlphaClampFilter final : public BitmapFilter
  18 {
  19 public:
  20     BitmapAlphaClampFilter(sal_uInt8 cThreshold)
  21         : mcThreshold(cThreshold)
  22     {
  23     }
  24
  25     virtual BitmapEx execute(BitmapEx const& rBitmapEx) const override;
  26
  27 private:
  28     sal_uInt8 mcThreshold;
  29 };
  30
  31 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */