claw 1.9.0
 
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claw::graphic::png Class Reference

A class for png pictures. More...

#include <png.hpp>

Inheritance diagram for claw::graphic::png:
Collaboration diagram for claw::graphic::png:

Classes

class  reader
 This class read data from a png file and store it in an image. More...
 
class  writer
 This class write an image in a png file. More...
 

Public Member Functions

 png (unsigned int w, unsigned int h)
 Constructor. Creates an empty image.
 
 png (const image &that)
 Copy constructor.
 
 png (std::istream &f)
 Constructor. Load an image from a png file.
 
void save (std::ostream &os, const writer::options &opt=writer::options()) const
 Save the image.
 
- Public Member Functions inherited from claw::graphic::image
 image ()
 Constructor. Creates an image without datas.
 
 image (unsigned int w, unsigned int h)
 Constructor. Creates an empty image.
 
 image (std::istream &f)
 Constructor. Reads an image from an input stream.
 
void swap (image &that)
 Swap the content of two images.
 
unsigned int width () const
 Gets image's width.
 
unsigned int height () const
 Gets image's height.
 
scanlineoperator[] (unsigned int i)
 Gets a line of the image.
 
const scanlineoperator[] (unsigned int i) const
 Gets a line of the image.
 
iterator begin ()
 Get an iterator pointing on the first pixel.
 
iterator end ()
 Get an iterator pointing just past the last pixel.
 
const_iterator begin () const
 Get an iterator pointing on the first pixel.
 
const_iterator end () const
 Get an iterator pointing just past the last pixel.
 
void merge (const image &that)
 Merge an image on the current image.
 
void merge (const image &that, const math::coordinate_2d< int > &pos)
 Merge an image on the current image.
 
void partial_copy (const image &that, const math::coordinate_2d< int > &pos)
 Copy an image on the current image.
 
void flip ()
 Set the image upside down.
 
void fill (const math::rectangle< int > r, const pixel_type &c)
 Fill an area of the image with a given color.
 
void set_size (unsigned int w, unsigned int h)
 Set a new size to the image.
 
void load (std::istream &f)
 Read the image from a stream.
 

Additional Inherited Members

- Public Types inherited from claw::graphic::image
typedef rgba_pixel pixel_type
 The type representing the colors of the pixels in the image.
 
typedef base_iterator< image, pixel_typeiterator
 The type of the iterator on the pixels of the image.
 
typedef base_iterator< const image, const pixel_typeconst_iterator
 The type of the iterator to access constant pixels.
 

Detailed Description

A class for png pictures.

Author
Julien Jorge

Definition at line 49 of file png.hpp.

Constructor & Destructor Documentation

◆ png() [1/3]

claw::graphic::png::png ( unsigned int w,
unsigned int h )

Constructor. Creates an empty image.

Parameters
wImage's width.
hImage's height.
Precondition
w > 0 and h > 0

Definition at line 38 of file png.cpp.

◆ png() [2/3]

claw::graphic::png::png ( const image & that)

Copy constructor.

Parameters
thatImage to copy from.

Definition at line 46 of file png.cpp.

◆ png() [3/3]

claw::graphic::png::png ( std::istream & f)

Constructor. Load an image from a png file.

Parameters
fPng file.

Definition at line 54 of file png.cpp.

Member Function Documentation

◆ save()

void claw::graphic::png::save ( std::ostream & f,
const writer::options & opt = writer::options() ) const

Save the image.

Parameters
fThe file in which we write.
optSaving options.

Definition at line 64 of file png.cpp.


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