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 <svx/sdr/primitive2d/sdrprimitivetools.hxx>
  21 #include <vcl/bmpacc.hxx>
  22 #include <osl/mutex.hxx>
  23 #include <vcl/lazydelete.hxx>
  24
  25 //////////////////////////////////////////////////////////////////////////////
  26 // helper methods
  27
  28 namespace drawinglayer
  29 {
  30     namespace primitive2d
  31     {
  32         BitmapEx createDefaultCross_3x3(const basegfx::BColor& rBColor)
  33         {
  34             static vcl::DeleteOnDeinit< BitmapEx > aRetVal(0);
  35             static basegfx::BColor aColor;
  36             static ::osl::Mutex aMutex;
  37
  38             ::osl::MutexGuard aGuard(aMutex);
  39
  40             if(!aRetVal.get() || rBColor != aColor)
  41             {
  42                 // copy values
  43                 aColor = rBColor;
  44
  45                 // create bitmap
  46                 Bitmap aContent(Size(3, 3), 24);
  47                 Bitmap aMask(Size(3, 3), 1);
  48                 BitmapWriteAccess* pWContent = aContent.AcquireWriteAccess();
  49                 BitmapWriteAccess* pWMask = aMask.AcquireWriteAccess();
  50                 OSL_ENSURE(pWContent && pWMask, "No WriteAccess to bitmap (!)");
  51                 const Color aVCLColor(aColor);
  52                 const BitmapColor aPixColor(aVCLColor);
  53                 const BitmapColor aMaskColor(0x01);
  54
  55                 // Y,X unusual order (!)
  56                 pWContent->SetPixel(0, 1, aPixColor);
  57                 pWContent->SetPixel(1, 0, aPixColor);
  58                 pWContent->SetPixel(1, 1, aPixColor);
  59                 pWContent->SetPixel(1, 2, aPixColor);
  60                 pWContent->SetPixel(2, 1, aPixColor);
  61
  62                 pWMask->SetPixel(0, 0, aMaskColor);
  63                 pWMask->SetPixel(0, 2, aMaskColor);
  64                 pWMask->SetPixel(2, 0, aMaskColor);
  65                 pWMask->SetPixel(2, 2, aMaskColor);
  66
  67                 aContent.ReleaseAccess(pWContent);
  68                 aMask.ReleaseAccess(pWMask);
  69
  70                 // create and exchange at aRetVal
  71                 delete aRetVal.set(new BitmapEx(aContent, aMask));
  72             }
  73
  74             return aRetVal.get() ? *aRetVal.get() : BitmapEx();
  75         }
  76     } // end of namespace primitive2d
  77 } // end of namespace drawinglayer
  78
  79 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */