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#ifndef INCLUDED_VCL_ALPHA_HXX
#define INCLUDED_VCL_ALPHA_HXX
#include <sal/config.h>
#include <utility>
#include <vcl/dllapi.h>
#include <vcl/bitmap.hxx>
class BitmapEx;
class VCL_DLLPUBLIC AlphaMask final
{
public :
AlphaMask();
explicit AlphaMask( const Bitmap& rBitmap );
AlphaMask( const AlphaMask& rAlphaMask );
AlphaMask( AlphaMask&& rAlphaMask );
explicit AlphaMask( const Size& rSizePixel, const sal_uInt8* pEraseTransparency = nullptr );
~AlphaMask();
AlphaMask& operator =( const Bitmap& rBitmap );
AlphaMask& operator =( const AlphaMask& rAlphaMask ) { maBitmap = rAlphaMask.maBitmap; return *this ; }
AlphaMask& operator =( AlphaMask&& rAlphaMask ) noexcept { maBitmap = std::move(rAlphaMask.maBitmap); return *this ; }
bool operator ==( const AlphaMask& rAlphaMask ) const { return maBitmap == rAlphaMask.maBitmap; }
bool operator !=( const AlphaMask& rAlphaMask ) const { return maBitmap != rAlphaMask.maBitmap; }
Bitmap const & GetBitmap() const { return maBitmap; }
void Erase( sal_uInt8 cTransparency );
void BlendWith(const AlphaMask& rOther);
/** Perform boolean OR operation with another alpha-mask
@ param rMask
The mask bitmap in the selected combine operation
@ return true , if the operation was completed successfully .
*/
bool AlphaCombineOr( const AlphaMask& rMask );
// check if alpha is used, returns true if at least one pixel has transparence
bool hasAlpha() const ;
bool IsEmpty() const { return maBitmap.IsEmpty(); }
void SetEmpty() { maBitmap.SetEmpty(); }
vcl::PixelFormat getPixelFormat() const { return maBitmap.getPixelFormat(); }
sal_Int64 GetSizeBytes() const { return maBitmap.GetSizeBytes(); }
Size GetSizePixel() const { return maBitmap.GetSizePixel(); }
void SetPrefSize( const Size& rSize ) { maBitmap.SetPrefSize(rSize); }
void SetPrefMapMode( const MapMode& rMapMode ) { maBitmap.SetPrefMapMode(rMapMode); }
BitmapChecksum GetChecksum() const { return maBitmap.GetChecksum(); }
bool Invert();
bool Mirror( BmpMirrorFlags nMirrorFlags ) { return maBitmap.Mirror(nMirrorFlags); }
bool Scale( const Size& rNewSize, BmpScaleFlag nScaleFlag = BmpScaleFlag::Default ) { return maBitmap.Scale(rNewSize, nScaleFlag); }
bool Scale( const double & rScaleX, const double & rScaleY, BmpScaleFlag nScaleFlag = BmpScaleFlag::Default )
{ return maBitmap.Scale(rScaleX, rScaleY, nScaleFlag); }
bool Convert( BmpConversion eConversion ) { return maBitmap.Convert(eConversion); }
vcl::Region CreateRegion( const Color& rColor, const tools::Rectangle& rRect ) const { return maBitmap.CreateRegion(rColor, rRect); }
bool Rotate( Degree10 nAngle10, const Color& rFillColor ) { return maBitmap.Rotate(nAngle10, rFillColor); }
bool Crop( const tools::Rectangle& rRectPixel ) { return maBitmap.Crop(rRectPixel); }
bool Expand( sal_Int32 nDX, sal_Int32 nDY, const Color* pInitColor = nullptr ) { return maBitmap.Expand(nDX, nDY, pInitColor); }
bool CopyPixel( const tools::Rectangle& rRectDst,
const tools::Rectangle& rRectSrc,
const AlphaMask& rBmpSrc )
{ return maBitmap.CopyPixel(rRectDst, rRectSrc, rBmpSrc.maBitmap); }
bool CopyPixel_AlphaOptimized(
const tools::Rectangle& rRectDst,
const tools::Rectangle& rRectSrc,
const AlphaMask& rBmpSrc )
{ return maBitmap.CopyPixel_AlphaOptimized(rRectDst, rRectSrc, rBmpSrc); }
private :
friend class BitmapEx;
friend class ::OutputDevice;
friend bool VCL_DLLPUBLIC ReadDIBBitmapEx(BitmapEx& rTarget, SvStream& rIStm, bool bFileHeader, bool bMSOFormat);
Bitmap maBitmap;
};
#endif // INCLUDED_VCL_ALPHA_HXX
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