include/vcl/alpha.hxx

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  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef INCLUDED_VCL_ALPHA_HXX
  21 #define INCLUDED_VCL_ALPHA_HXX
  22
  23 #include <sal/config.h>
  24
  25 #include <utility>
  26
  27 #include <vcl/dllapi.h>
  28 #include <vcl/bitmap.hxx>
  29
  30 class BitmapEx;
  31
  32 class VCL_DLLPUBLIC AlphaMask : private Bitmap
  33 {
  34 public:
  35
  36                 AlphaMask();
  37                 AlphaMask( const Bitmap& rBitmap );
  38                 AlphaMask( const AlphaMask& rAlphaMask );
  39                 AlphaMask( AlphaMask&& rAlphaMask );
  40                 AlphaMask( const Size& rSizePixel, sal_uInt8* pEraseTransparency = nullptr );
  41     virtual     ~AlphaMask() override;
  42
  43     AlphaMask&  operator=( const Bitmap& rBitmap );
  44     AlphaMask&  operator=( const AlphaMask& rAlphaMask ) { return static_cast<AlphaMask&>( Bitmap::operator=( rAlphaMask ) ); }
  45     AlphaMask&  operator=( AlphaMask&& rAlphaMask ) { return static_cast<AlphaMask&>( Bitmap::operator=( std::move(rAlphaMask) ) ); }
  46     bool        operator!() const { return Bitmap::operator!(); }
  47     bool        operator==( const AlphaMask& rAlphaMask ) const { return Bitmap::operator==( rAlphaMask ); }
  48     bool        operator!=( const AlphaMask& rAlphaMask ) const { return Bitmap::operator!=( rAlphaMask ); }
  49
  50     void        SetPrefMapMode( const MapMode& rMapMode ) { Bitmap::SetPrefMapMode( rMapMode ); }
  51
  52     void        SetPrefSize( const Size& rSize ) { Bitmap::SetPrefSize( rSize ); }
  53
  54     Size        GetSizePixel() const { return Bitmap::GetSizePixel(); }
  55
  56     BitmapChecksum   GetChecksum() const { return Bitmap::GetChecksum(); }
  57
  58     Bitmap      GetBitmap() const;
  59
  60     bool        Erase( sal_uInt8 cTransparency );
  61     bool        Replace( const Bitmap& rMask, sal_uInt8 rReplaceTransparency );
  62     bool        Replace( sal_uInt8 cSearchTransparency, sal_uInt8 cReplaceTransparency );
  63
  64     BitmapReadAccess*  AcquireReadAccess() { return Bitmap::AcquireReadAccess(); }
  65     BitmapWriteAccess* AcquireWriteAccess() { return Bitmap::AcquireWriteAccess(); }
  66
  67     void        ReleaseAccess( BitmapReadAccess* pAccess );
  68
  69     typedef vcl::ScopedBitmapAccess< BitmapReadAccess, AlphaMask, &AlphaMask::AcquireReadAccess >
  70         ScopedReadAccess;
  71     typedef vcl::ScopedBitmapAccess< BitmapWriteAccess, AlphaMask, &AlphaMask::AcquireWriteAccess >
  72         ScopedWriteAccess;
  73
  74 private:
  75     friend class BitmapEx;
  76     friend class ::OutputDevice;
  77     friend bool VCL_DLLPUBLIC ReadDIBBitmapEx(BitmapEx& rTarget, SvStream& rIStm);
  78
  79     SAL_DLLPRIVATE const Bitmap&    ImplGetBitmap() const;
  80     SAL_DLLPRIVATE void             ImplSetBitmap( const Bitmap& rBitmap );
  81
  82 };
  83
  84 #endif // INCLUDED_VCL_ALPHA_HXX
  85
  86 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */