basegfx::BColorModifier_luminance_to_alpha Class Reference

convert to alpha based on luminance More...

#include <bcolormodifier.hxx>

Inheritance diagram for basegfx::BColorModifier_luminance_to_alpha:

Collaboration diagram for basegfx::BColorModifier_luminance_to_alpha:

Public Member Functions
	BColorModifier_luminance_to_alpha ()
virtual	~BColorModifier_luminance_to_alpha () override
virtual SAL_DLLPRIVATE bool	operator== (const BColorModifier &rCompare) const override
virtual SAL_DLLPRIVATE ::basegfx::BColor	getModifiedColor (const ::basegfx::BColor &aSourceColor) const override
virtual SAL_DLLPRIVATE OUString	getModifierName () const override
Public Member Functions inherited from basegfx::BColorModifier
virtual	~BColorModifier ()
virtual bool	operator== (const BColorModifier &rCompare) const =0
bool	operator!= (const BColorModifier &rCompare) const
virtual ::basegfx::BColor	getModifiedColor (const ::basegfx::BColor &aSourceColor) const =0
virtual OUString	getModifierName () const =0

Additional Inherited Members
Protected Member Functions inherited from basegfx::BColorModifier
	BColorModifier ()

Detailed Description

convert to alpha based on luminance

returns a color where red green and blue are first weighted and added to build a luminance value which is then inverted and used for red, green and blue. The weights are r * 0.2125 + g * 0.7154 + b * 0.0721. This derivation is used for the svg importer and does exactly what SVG defines for this needed case.

Definition at line 137 of file bcolormodifier.hxx.

Constructor & Destructor Documentation

BColorModifier_luminance_to_alpha()

basegfx::BColorModifier_luminance_to_alpha::BColorModifier_luminance_to_alpha ( )

inline

Definition at line 140 of file bcolormodifier.hxx.

~BColorModifier_luminance_to_alpha()

basegfx::BColorModifier_luminance_to_alpha::~BColorModifier_luminance_to_alpha ( )

overridevirtual

Definition at line 72 of file bcolormodifier.cxx.

Member Function Documentation

getModifiedColor()

basegfx::BColor basegfx::BColorModifier_luminance_to_alpha::getModifiedColor ( const ::basegfx::BColor &  aSourceColor ) const

overridevirtual

Implements basegfx::BColorModifier.

Definition at line 81 of file bcolormodifier.cxx.

getModifierName()

OUString basegfx::BColorModifier_luminance_to_alpha::getModifierName ( ) const

overridevirtual

Implements basegfx::BColorModifier.

Definition at line 88 of file bcolormodifier.cxx.

operator==()

bool basegfx::BColorModifier_luminance_to_alpha::operator== ( const BColorModifier &  rCompare ) const

overridevirtual

Implements basegfx::BColorModifier.

Definition at line 76 of file bcolormodifier.cxx.

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The documentation for this class was generated from the following files:

• bcolormodifier.hxx
• bcolormodifier.cxx