CompositionMode Class Reference

#include <Pt/Gfx/CompositionMode.h>

How new pixels combine with existing pixels. More...

Public Types
enum	Mode {   SourceCopy = 0 ,   SourceOver = 1 }
	Supported composition operators. More...

Public Member Functions
	CompositionMode (Mode m=SourceCopy)
	Constructs a composition mode.
CompositionMode &	operator= (Mode m)
	Assigns a new composition operator.
	operator Pt::uint32_t () const
	Converts the mode to its integral representation.

Detailed Description

CompositionMode is the blend operator a painter uses. SourceCopy replaces destination pixels. SourceOver blends source over destination using source alpha.

Member Enumeration Documentation

Mode

enum Mode

Enumerator
SourceCopy	Copies source pixels without blending.
SourceOver	Blends source pixels over the destination using source alpha.