vcl/inc/win/salbmp.h

   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 #ifndef INCLUDED_VCL_INC_WIN_SALBMP_H
  21 #define INCLUDED_VCL_INC_WIN_SALBMP_H
  22
  23 #include <tools/gen.hxx>
  24 #include <win/wincomp.hxx>
  25 #include <salbmp.hxx>
  26 #include <memory>
  27
  28
  29 struct  BitmapBuffer;
  30 class   BitmapColor;
  31 class   BitmapPalette;
  32 class   SalGraphics;
  33 namespace Gdiplus { class Bitmap; }
  34
  35 class WinSalBitmap : public SalBitmap
  36 {
  37 private:
  38     friend class GdiPlusBuffer; // allow buffer to remove maGdiPlusBitmap and mpAssociatedAlpha eventually
  39
  40     Size                maSize;
  41     HGLOBAL             mhDIB;
  42     HBITMAP             mhDDB;
  43
  44     // the buffered evtl. used Gdiplus::Bitmap instance. It is managed by
  45     // GdiPlusBuffer. To make this safe, it is only handed out as shared
  46     // pointer; the GdiPlusBuffer may delete the local instance.
  47
  48     // mpAssociatedAlpha holds the last WinSalBitmap used to construct an
  49     // evtl. buffered GdiPlusBmp. This is needed since the GdiPlusBmp is a single
  50     // instance and remembered only on the content-WinSalBitmap, not on the
  51     // alpha-WinSalBitmap.
  52     std::shared_ptr< Gdiplus::Bitmap >       maGdiPlusBitmap;
  53     const WinSalBitmap* mpAssociatedAlpha;
  54
  55     sal_uInt16          mnBitCount;
  56
  57     Gdiplus::Bitmap*    ImplCreateGdiPlusBitmap(const WinSalBitmap& rAlphaSource);
  58     Gdiplus::Bitmap*    ImplCreateGdiPlusBitmap();
  59
  60 public:
  61
  62     HGLOBAL             ImplGethDIB() const { return mhDIB; }
  63     HBITMAP             ImplGethDDB() const { return mhDDB; }
  64
  65     std::shared_ptr< Gdiplus::Bitmap > ImplGetGdiPlusBitmap(const WinSalBitmap* pAlphaSource = nullptr) const;
  66
  67     static HGLOBAL      ImplCreateDIB( const Size& rSize, sal_uInt16 nBitCount, const BitmapPalette& rPal );
  68     static HANDLE       ImplCopyDIBOrDDB( HANDLE hHdl, bool bDIB );
  69     static sal_uInt16   ImplGetDIBColorCount( HGLOBAL hDIB );
  70     static void         ImplDecodeRLEBuffer( const BYTE* pSrcBuf, BYTE* pDstBuf,
  71                                              const Size& rSizePixel, bool bRLE4 );
  72
  73 public:
  74
  75                         WinSalBitmap();
  76     virtual             ~WinSalBitmap() override;
  77
  78 public:
  79
  80     bool                        Create( HANDLE hBitmap, bool bDIB, bool bCopyHandle );
  81     virtual bool                Create( const Size& rSize, sal_uInt16 nBitCount, const BitmapPalette& rPal ) override;
  82     virtual bool                Create( const SalBitmap& rSalBmpImpl ) override;
  83     virtual bool                Create( const SalBitmap& rSalBmpImpl, SalGraphics* pGraphics ) override;
  84     virtual bool                Create( const SalBitmap& rSalBmpImpl, sal_uInt16 nNewBitCount ) override;
  85     virtual bool                Create( const css::uno::Reference< css::rendering::XBitmapCanvas >& rBitmapCanvas,
  86                                            Size& rSize,
  87                                            bool bMask = false ) override;
  88
  89     virtual void                Destroy() override;
  90
  91     virtual Size                GetSize() const override { return maSize; }
  92     virtual sal_uInt16          GetBitCount() const override { return mnBitCount; }
  93
  94     virtual BitmapBuffer*       AcquireBuffer( BitmapAccessMode nMode ) override;
  95     virtual void                ReleaseBuffer( BitmapBuffer* pBuffer, BitmapAccessMode nMode ) override;
  96     virtual bool                GetSystemData( BitmapSystemData& rData ) override;
  97
  98     virtual bool                ScalingSupported() const override;
  99     virtual bool                Scale( const double& rScaleX, const double& rScaleY, BmpScaleFlag nScaleFlag ) override;
 100     virtual bool                Replace( const Color& rSearchColor, const Color& rReplaceColor, sal_uLong nTol ) override;
 101 };
 102
 103 #endif // INCLUDED_VCL_INC_WIN_SALBMP_H
 104
 105 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */