graphics.h File Reference

Classes
class	wxGraphicsPath
	A wxGraphicsPath is a native representation of a geometric path. More...
class	wxGraphicsObject
	This class is the superclass of native graphics objects like pens etc. More...
class	wxGraphicsContext
	A wxGraphicsContext instance is the object that is drawn upon. More...
class	wxGraphicsGradientStop
	Represents a single gradient stop in a collection of gradient stops as represented by wxGraphicsGradientStops. More...
class	wxGraphicsGradientStops
	Represents a collection of wxGraphicGradientStop values for use with CreateLinearGradientBrush and CreateRadialGradientBrush. More...
class	wxGraphicsRenderer
	A wxGraphicsRenderer is the instance corresponding to the rendering engine used. More...
class	wxGraphicsBrush
	A wxGraphicsBrush is a native representation of a brush. More...
class	wxGraphicsFont
	A wxGraphicsFont is a native representation of a font. More...
class	wxGraphicsPen
	A wxGraphicsPen is a native representation of a pen. More...
class	wxGraphicsMatrix
	A wxGraphicsMatrix is a native representation of an affine matrix. More...
Enumerations
enum	wxAntialiasMode {   wxANTIALIAS_NONE,   wxANTIALIAS_DEFAULT }
	Anti-aliasing modes used by wxGraphicsContext::SetAntialiasMode(). More...
enum	wxCompositionMode {   wxCOMPOSITION_CLEAR,   wxCOMPOSITION_SOURCE,   wxCOMPOSITION_OVER,   wxCOMPOSITION_IN,   wxCOMPOSITION_OUT,   wxCOMPOSITION_ATOP,   wxCOMPOSITION_DEST,   wxCOMPOSITION_DEST_OVER,   wxCOMPOSITION_DEST_IN,   wxCOMPOSITION_DEST_OUT,   wxCOMPOSITION_DEST_ATOP,   wxCOMPOSITION_XOR,   wxCOMPOSITION_ADD }
	Compositing is done using Porter-Duff compositions (see http://keithp.com/~keithp/porterduff/p253-porter.pdf) with wxGraphicsContext::SetCompositionMode(). More...

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Enumeration Type Documentation

enum wxAntialiasMode

Anti-aliasing modes used by wxGraphicsContext::SetAntialiasMode().

Enumerator:

wxANTIALIAS_NONE	No anti-aliasing.
wxANTIALIAS_DEFAULT	The default anti-aliasing.

enum wxCompositionMode

Compositing is done using Porter-Duff compositions (see http://keithp.com/~keithp/porterduff/p253-porter.pdf) with wxGraphicsContext::SetCompositionMode().

The description give a short equation on how the values of a resulting pixel are calculated. R = Result, S = Source, D = Destination, colors premultiplied with alpha Ra, Sa, Da their alpha components

Enumerator:

wxCOMPOSITION_CLEAR	R = 0
wxCOMPOSITION_SOURCE	R = S
wxCOMPOSITION_OVER	R = S + D*(1 - Sa)
wxCOMPOSITION_IN	R = S*Da
wxCOMPOSITION_OUT	R = S*(1 - Da)
wxCOMPOSITION_ATOP	R = S*Da + D*(1 - Sa)
wxCOMPOSITION_DEST	R = D, essentially a noop
wxCOMPOSITION_DEST_OVER	R = S*(1 - Da) + D
wxCOMPOSITION_DEST_IN	R = D*Sa
wxCOMPOSITION_DEST_OUT	R = D*(1 - Sa)
wxCOMPOSITION_DEST_ATOP	R = S*(1 - Da) + D*Sa
wxCOMPOSITION_XOR	R = S*(1 - Da) + D*(1 - Sa)
wxCOMPOSITION_ADD	R = S + D