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IMG_BrushRGBA32 Class Reference

A brush used for drawing in pixmaps. More...

#include <IMG_BrushRGBA32.h>

Inheritance diagram for IMG_BrushRGBA32:

List of all members.

Public Methods
	IMG_BrushRGBA32 (TUns32 w,TUns32 h,const IMG_ColorRGB &c,float a=0.8f)
	Constructs a brush image with the dimensions and color given. More...
virtual void	setColor (const IMG_ColorRGB &c)
	Sets the color of the brush. More...
virtual void	getColor (IMG_ColorRGB &c)const
	Returns the color of the brush. More...
virtual void	setTransparency (float a)
	Sets the transparency of the brush. More...
virtual float	getTransparency ()const
	Returns the transparency of the brush. More...
virtual void	setRadii (TUns32 rI,TUns32 rO)
	Sets the shape of the brush from two radii (inner and outer). More...
virtual void	getRadii (TUns32 &rI,TUns32 &rO)const
	Returns the radii that determine the shape of the brush. More...
Protected Methods
virtual void	updateImage ()
	Updates the image of this brush. More...
Protected Attributes
IMG_ColorRGB	m_color
float	m_alpha
	The color of the brush.
TUns32	m_ri
	The transparency of the brush.
TUns32	m_ro
	The inner radius of the brush.

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Detailed Description

A brush used for drawing in pixmaps.

The brush is a pixmap as well. Drawing can be implemented by blending the brush into the pixmap.

Author(s):

Maarten Gribnau

Date:

March 7, 2001

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Constructor & Destructor Documentation

IMG_BrushRGBA32::IMG_BrushRGBA32 ( TUns32 w, TUns32 h, const IMG_ColorRGB & c, float a = 0.8f )

Constructs a brush image with the dimensions and color given. Parameters: w   width of the brush image h   height of the brush image c   color of the brush a   transparency in the center of the brush

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Member Function Documentation

void IMG_BrushRGBA32::getColor ( IMG_ColorRGB & c ) const [inline, virtual]

Returns the color of the brush. Parameters: c   color of the brush

void IMG_BrushRGBA32::getRadii ( TUns32 & rI, TUns32 & rO ) const [inline, virtual]

Returns the radii that determine the shape of the brush. Parameters: rI   inner radius rO   outer radius

float IMG_BrushRGBA32::getTransparency ( ) const [inline, virtual]

Returns the transparency of the brush. Parameters: a   transparency of the brush

void IMG_BrushRGBA32::setColor ( const IMG_ColorRGB & c ) [virtual]

Sets the color of the brush. Parameters: c   color of the brush

void IMG_BrushRGBA32::setRadii ( TUns32 rI, TUns32 rO ) [virtual]

Sets the shape of the brush from two radii (inner and outer). This creates a brush with alpha==0 inside the inner radius and gradually fades to alpha==1 at the outer radius. Inner radius should be smaller or equal to the outer radius. If not, the outer radius is made equal to the inner radius. If the either radius is larger than the bounds of the brush, they are clipped. Parameters: rI   inner radius rO   outer radius

void IMG_BrushRGBA32::setTransparency ( float a ) [virtual]

Sets the transparency of the brush. Parameters: a   transparency of the brush

void IMG_BrushRGBA32::updateImage ( ) [protected, virtual]

Updates the image of this brush. The image is created using the current color, transparency and shape radii.

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

• IMG_BrushRGBA32.h
• IMG_BrushRGBA32.cpp

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