LibreOffice Module vcl (master)  1
BitmapInfoAccess.cxx
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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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3  * This file is part of the LibreOffice project.
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9  * This file incorporates work covered by the following license notice:
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11  * Licensed to the Apache Software Foundation (ASF) under one or more
12  * contributor license agreements. See the NOTICE file distributed
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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 <vcl/BitmapInfoAccess.hxx>
21 
22 #include <salbmp.hxx>
23 #include <svdata.hxx>
24 #include <salinst.hxx>
25 
27  : mpBuffer(nullptr)
28  , mnAccessMode(nMode)
29 {
30  std::shared_ptr<SalBitmap> xImpBmp = rBitmap.ImplGetSalBitmap();
31 
32  if (!xImpBmp)
33  return;
34 
36  {
37  xImpBmp->DropScaledCache();
38 
39  if (xImpBmp.use_count() > 2)
40  {
41  xImpBmp.reset();
42  rBitmap.ImplMakeUnique();
43  xImpBmp = rBitmap.ImplGetSalBitmap();
44  }
45  }
46 
47  mpBuffer = xImpBmp->AcquireBuffer(mnAccessMode);
48 
49  if (!mpBuffer)
50  {
51  std::shared_ptr<SalBitmap> xNewImpBmp(ImplGetSVData()->mpDefInst->CreateSalBitmap());
52  if (xNewImpBmp->Create(*xImpBmp, rBitmap.getPixelFormat()))
53  {
54  xImpBmp = xNewImpBmp;
55  rBitmap.ImplSetSalBitmap(xImpBmp);
56  mpBuffer = xImpBmp->AcquireBuffer(mnAccessMode);
57  }
58  }
59 
60  maBitmap = rBitmap;
61 }
62 
64 {
65  std::shared_ptr<SalBitmap> xImpBmp = maBitmap.ImplGetSalBitmap();
66 
67  if (mpBuffer && xImpBmp)
68  {
69  xImpBmp->ReleaseBuffer(mpBuffer, mnAccessMode);
70  }
71 }
72 
73 sal_uInt16 BitmapInfoAccess::GetBestPaletteIndex(const BitmapColor& rBitmapColor) const
74 {
75  const BitmapBuffer* pBuffer = mpBuffer;
76 
77  return (HasPalette() ? pBuffer->maPalette.GetBestIndex(rBitmapColor) : 0);
78 }
79 
80 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
BitmapAccessMode mnAccessMode
virtual ~BitmapInfoAccess()
const std::shared_ptr< SalBitmap > & ImplGetSalBitmap() const
sal_uInt16 GetBestPaletteIndex(const BitmapColor &rBitmapColor) const
BitmapBuffer * mpBuffer
ImplSVData * ImplGetSVData()
Definition: svdata.cxx:75
vcl::PixelFormat getPixelFormat() const
bool HasPalette() const
BitmapAccessMode
sal_uInt16 GetBestIndex(const BitmapColor &rCol) const
BitmapInfoAccess(Bitmap &rBitmap, BitmapAccessMode nMode=BitmapAccessMode::Info)
SAL_DLLPRIVATE void ImplMakeUnique()
BitmapPalette maPalette
SAL_DLLPRIVATE void ImplSetSalBitmap(const std::shared_ptr< SalBitmap > &xImpBmp)