gradient.hxx

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#ifndef INCLUDED_VCL_GRADIENT_HXX
#define INCLUDED_VCL_GRADIENT_HXX
 
#include <sal/types.h>
#include <tools/color.hxx>
#include <tools/degree.hxx>
#include <tools/long.hxx>
#include <o3tl/cow_wrapper.hxx>
 
#include <vcl/dllapi.h>
#include <vcl/vclenum.hxx>
#include <com/sun/star/awt/GradientStyle.hpp>
 
namespace tools { class Rectangle; }
 
class Point;
class SvStream;
class GDIMetaFile;
 
class VCL_DLLPUBLIC Gradient
{
private:
    class Impl;
    ::o3tl::cow_wrapper<Impl>  mpImplGradient;
 
public:
                    Gradient();
                    Gradient( const Gradient& rGradient );
                    Gradient( Gradient&& rGradient );
                    Gradient( css::awt::GradientStyle eStyle,
                              const Color& rStartColor,
                              const Color& rEndColor );
                    ~Gradient();
 
    void            SetStyle( css::awt::GradientStyle eStyle );
    css::awt::GradientStyle   GetStyle() const;
 
    void            SetStartColor( const Color& rColor );
    const Color&    GetStartColor() const;
    void            SetEndColor( const Color& rColor );
    const Color&    GetEndColor() const;
    void            MakeGrayscale();
 
    void            SetAngle( Degree10 nAngle );
    Degree10        GetAngle() const;
 
    void            SetBorder( sal_uInt16 nBorder );
    sal_uInt16      GetBorder() const;
    void            SetOfsX( sal_uInt16 nOfsX );
    sal_uInt16      GetOfsX() const;
    void            SetOfsY( sal_uInt16 nOfsY );
    sal_uInt16      GetOfsY() const;
 
    void            SetStartIntensity( sal_uInt16 nIntens );
    sal_uInt16      GetStartIntensity() const;
    void            SetEndIntensity( sal_uInt16 nIntens );
    sal_uInt16      GetEndIntensity() const;
 
    void            SetSteps( sal_uInt16 nSteps );
    sal_uInt16      GetSteps() const;
 
    void            GetBoundRect( const tools::Rectangle& rRect, tools::Rectangle &rBoundRect, Point& rCenter ) const;
 
    void AddGradientActions(tools::Rectangle const& rRect, GDIMetaFile& rMetaFile);
 
    Gradient&       operator=( const Gradient& rGradient );
    Gradient&       operator=( Gradient&& rGradient );
    bool            operator==( const Gradient& rGradient ) const;
    bool            operator!=( const Gradient& rGradient ) const
                        { return !(Gradient::operator==( rGradient )); }
 
private:
    tools::Long GetMetafileSteps(tools::Rectangle const& rRect) const;
 
    void DrawComplexGradientToMetafile(tools::Rectangle const& rRect, GDIMetaFile& rMetaFile) const;
    void DrawLinearGradientToMetafile(tools::Rectangle const& rRect, GDIMetaFile& rMetaFile) const;
};
 
#endif // INCLUDED_VCL_GRADIENT_HXX
 
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