svx/source/sdr/primitive2d/sdrprimitivetools.cxx

   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  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <sdr/primitive2d/sdrprimitivetools.hxx>
  21 #include <vcl/lazydelete.hxx>
  22 #include <vcl/BitmapTools.hxx>
  23 #include <mutex>
  24
  25
  26 // helper methods
  27
  28 namespace drawinglayer::primitive2d
  29 {
  30         BitmapEx createDefaultCross_3x3(const basegfx::BColor& rBColor)
  31         {
  32             static vcl::DeleteOnDeinit< BitmapEx > aRetVal(vcl::DeleteOnDeinitFlag::Empty);
  33             static basegfx::BColor aBColor;
  34             static std::mutex aMutex;
  35
  36             std::scoped_lock aGuard(aMutex);
  37
  38             if(!aRetVal.get() || rBColor != aBColor)
  39             {
  40                 // copy values
  41                 aBColor = rBColor;
  42
  43                 // create bitmap
  44                 Color c(aBColor);
  45                 sal_uInt8 r = c.GetRed();
  46                 sal_uInt8 g = c.GetGreen();
  47                 sal_uInt8 b = c.GetBlue();
  48                 sal_uInt8 a = 255;
  49                 const sal_uInt8 cross[] = {
  50                    0, 0, 0, a,   r, g, b, 0,   0, 0, 0, a,
  51                    r, g, b, 0,   r, g, b, 0,   r, g, b, 0,
  52                    0, 0, 0, a,   r, g, b, 0,   0, 0, 0, a
  53                 };
  54                 BitmapEx aBitmap = vcl::bitmap::CreateFromData(cross, 3, 3, 12, /*nBitsPerPixel*/32);
  55
  56                 // create and exchange at aRetVal
  57                 aRetVal.set(aBitmap);
  58             }
  59
  60             return aRetVal.get() ? *aRetVal.get() : BitmapEx();
  61         }
  62 } // end of namespace
  63
  64 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */