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IMG_PixmapRGBA32 Class Reference

Pixmap of kPixelTypeRGBA32 type. More...

#include <IMG_PixmapRGBA32.h>

Inheritance diagram for IMG_PixmapRGBA32:

Public Types
typedef TUns32	TPixelRGBA32
	The pixel type in this pixmap.
typedef TPixelRGBA32*	TPixelPtr
	The pixel pointer type of this pixmap.
Public Methods
	IMG_PixmapRGBA32 (TUns32 width,TUns32 height)
	Constructor. More...
	IMG_PixmapRGBA32 (void *image,TUns32 width,TUns32 height,TUns32 rowBytes)
	Constructor. More...
virtual void	fillRect (const IMG_Rect &r,const IMG_ColorRGB &c)
	Fills the rectangle given with the color given. More...
virtual void	fillRect (const IMG_Rect &r,const IMG_ColorRGBA &c)
	Fills the rectangle given with the color given. More...
virtual void	setPixmap (const IMG_PixmapRGBA32 &src,const IMG_Rect &srcBnds,const IMG_Rect &destBnds)
	Pastes an area of a pixmap into this pixmap. More...
virtual void	blendPixmap (const IMG_PixmapRGBA32 &src,const IMG_Rect &srcBnds,const IMG_Rect &destBnds)
	Blends an area of a pixmap into this pixmap. More...
Public Attributes
IMG_MemPtr<TPixelRGBA32>	m_mem
	"Save" memory pointer.
Protected Methods
TPixelPtr	getPixelPtr (TUns32 x,TUns32 y)const
	Returns pointer to the pixel. More...
TPixelRGBA32	getPixelValue (const IMG_ColorRGBA &c)const
	Returns the pixel value of a color. More...
void	getColor (TPixelRGBA32 p,IMG_ColorRGBA &c)const
	Returns the color of from a pixel value. More...

Detailed Description

Pixmap of kPixelTypeRGBA32 type.

A pixmap with 24 bits per pixel in ABGR format. Provides methods to fill rectangular areas in this image with a color. Provides methods to paste or blend other pixmaps into this pixmap.

Author(s):: Maarten Gribnau

Date:: March 6, 2001

Constructor & Destructor Documentation

IMG_PixmapRGBA32::IMG_PixmapRGBA32 ( TUns32 width,

TUns32 height )

Constructor.
Creates a new pixmap of the kPixelTypeRGBA32 type with the requested dimensions.
Exceptions:

IMG_MemPtr::Size > when an invalid width and/or height is passed.

IMG_MemPtr::Memory > when a there is not enough memory to allocate the image.

Parameters:

width the width in pixels of the image.

height the height in pixels of the image.

IMG_PixmapRGBA32::IMG_PixmapRGBA32 ( void * image,

TUns32 width,

TUns32 height,

TUns32 rowBytes )

Constructor.
Creates a new pixmap of the kPixelTypeRGBA32 from a pointer to image data. The image data will not be freed upon destruction of this object. The owner of this object is reponsible for that.
Exceptions:

Size > when an invalid width and/or height is passed.

Parameters:

image pointer to the image data.

width the width in pixels of the image.

height the height in pixels of the image.

Member Function Documentation

void IMG_PixmapRGBA32::blendPixmap ( const IMG_PixmapRGBA32 & src,

const IMG_Rect & srcBnds,

const IMG_Rect & destBnds ) [virtual]

Blends an area of a pixmap into this pixmap.
Blends an area of the given pixmap centered at the given coordinates into this pixmap. The alpha information in the given image is used to blend. Performs a bounds check.
Parameters:

src the pixmap to paste.

srcBnds the bounds of the area of the pixmap to paste.

destBnds the destination area for the paste.

void IMG_PixmapRGBA32::fillRect ( const IMG_Rect & r,

const IMG_ColorRGBA & c ) [virtual]

Fills the rectangle given with the color given.
Sets the alpha values from the color. Performs a bounds check.
Parameters:

r requested bounds rectangle in the image

c color to use

void IMG_PixmapRGBA32::fillRect ( const IMG_Rect & r,

const IMG_ColorRGB & c ) [virtual]

Fills the rectangle given with the color given.
Retains the alpha values. Performs a bounds check.
Parameters:

r requested bounds rectangle in the image

c color to use

void IMG_PixmapRGBA32::getColor ( TPixelRGBA32 p,

IMG_ColorRGBA & c ) const [inline, protected]

Returns the color of from a pixel value.

Parameters:

p the pixel value

c the color calculated

IMG_PixmapRGBA32::TPixelPtr IMG_PixmapRGBA32::getPixelPtr ( TUns32 x,

TUns32 y ) const [inline, protected]

Returns pointer to the pixel.
Returns a pointer of TPixelPtr type to the pixel at the requested coordinates. Does not perform a bounds check!
Parameters:

x column address of the pixel.

y row address of the pixel.

Returns:
the pointer calculated.

IMG_PixmapRGBA32::TPixelRGBA32 IMG_PixmapRGBA32::getPixelValue ( const IMG_ColorRGBA & c ) const [inline, protected]

Returns the pixel value of a color.

Parameters:

c the color to convert

Returns:
the pixel value calculated

void IMG_PixmapRGBA32::setPixmap ( const IMG_PixmapRGBA32 & src,

const IMG_Rect & srcBnds,

const IMG_Rect & destBnds ) [virtual]

Pastes an area of a pixmap into this pixmap.
Pastes an area of the given pixmap centered at the given coordinates into this pixmap. Ignores the alpha information, this is pasted as well. Performs a bounds check.
Parameters:

src the pixmap to paste.

srcBnds the bounds of the area of the pixmap to paste.

destBnds the destination area for the paste.

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

IMG_PixmapRGBA32.h
IMG_PixmapRGBA32.cpp

Generated at Thu May 3 17:29:38 2001 for ImgLib by

IMG_PixmapRGBA32 Class Reference

Public Types

Public Methods

Public Attributes

Protected Methods

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation