png::info Class Reference

Holds information about PNG image. Adapter class for IO image operations. More...

#include <info.hpp>

Inheritance diagram for png::info:

Public Member Functions
	info (io_base &io, png_struct *png)
void	read ()
void	write () const
void	update ()
Public Member Functions inherited from png::info_base
	info_base (io_base &io, png_struct *png)
png_info *	get_png_info () const
png_info **	get_png_info_ptr ()
Public Member Functions inherited from png::image_info
	image_info ()
	Constructs the image_info object with default values for color_type, interlace_type, compression_method and filter_type. More...
uint_32	get_width () const
void	set_width (uint_32 width)
uint_32	get_height () const
void	set_height (uint_32 height)
color_type	get_color_type () const
void	set_color_type (color_type color_space)
int	get_bit_depth () const
void	set_bit_depth (int bit_depth)
interlace_type	get_interlace_type () const
void	set_interlace_type (interlace_type interlace)
compression_type	get_compression_type () const
void	set_compression_type (compression_type compression)
filter_type	get_filter_type () const
void	set_filter_type (filter_type filter)
palette const &	get_palette () const
palette &	get_palette ()
void	set_palette (palette const &plte)
void	drop_palette ()
	Removes all entries from the palette. More...
tRNS const &	get_tRNS () const
tRNS &	get_tRNS ()
void	set_tRNS (tRNS const &trns)
double	get_gamma () const
void	set_gamma (double gamma)

Protected Member Functions
void	sync_ihdr (void) const

Additional Inherited Members
Protected Attributes inherited from png::info_base
io_base &	m_io
png_struct *	m_png
png_info *	m_info
Protected Attributes inherited from png::image_info
uint_32	m_width
uint_32	m_height
int	m_bit_depth
color_type	m_color_type
interlace_type	m_interlace_type
compression_type	m_compression_type
filter_type	m_filter_type
palette	m_palette
tRNS	m_tRNS
double	m_gamma

Detailed Description

Holds information about PNG image. Adapter class for IO image operations.

Constructor & Destructor Documentation

info()

png::info::info ( io_base &  io, png_struct *  png  )

inline

Member Function Documentation

read()

void png::info::read ( )

inline

References png::chunk_gAMA, png::chunk_PLTE, png::chunk_tRNS, png::color_type_palette, png::image_info::m_bit_depth, png::image_info::m_color_type, png::image_info::m_compression_type, png::image_info::m_filter_type, png::image_info::m_gamma, png::image_info::m_height, png::info_base::m_info, png::image_info::m_interlace_type, png::image_info::m_palette, png::info_base::m_png, png::image_info::m_tRNS, and png::image_info::m_width.

Referenced by png::reader< istream >::read_info().

write()

void png::info::write ( ) const

inline

References png::color_type_palette, png::image_info::m_color_type, png::image_info::m_gamma, png::info_base::m_info, png::image_info::m_palette, png::info_base::m_png, png::image_info::m_tRNS, and sync_ihdr().

Referenced by png::writer< ostream >::write_info().

update()

void png::info::update ( )

inline

References png::info_base::m_info, png::info_base::m_png, and sync_ihdr().

Referenced by png::reader< istream >::update_info().

sync_ihdr()

void png::info::sync_ihdr ( void  ) const

inlineprotected

References png::image_info::m_bit_depth, png::image_info::m_color_type, png::image_info::m_compression_type, png::image_info::m_filter_type, png::image_info::m_height, png::info_base::m_info, png::image_info::m_interlace_type, png::info_base::m_png, and png::image_info::m_width.

Referenced by update(), and write().

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

• info.hpp