net_instaweb::spriter::LibpngImageLibrary Class Reference

#include "libpng_image_library.h"

Inheritance diagram for net_instaweb::spriter::LibpngImageLibrary:

Classes
class	Canvas
class	Image
	Images are immutable rectangular regions of pixels. More...

Public Member Functions
	LibpngImageLibrary (const FilePath &base_input_path, const FilePath &base_output_path, Delegate *delegate)
Public Member Functions inherited from net_instaweb::spriter::ImageLibraryInterface
	ImageLibraryInterface (Delegate *delegate)

Protected Member Functions
virtual ImageLibraryInterface::Image *	ReadFromFile (const FilePath &path)
virtual ImageLibraryInterface::Canvas *	CreateCanvas (int width, int height)
Protected Member Functions inherited from net_instaweb::spriter::ImageLibraryInterface
	ImageLibraryInterface (const FilePath &base_input_path, const FilePath &base_output_path, Delegate *delegate)
	Use ImageLibraryInterfaceFactory() to access an image library.
const FilePath &	base_input_path ()
	Used by subclasses:
const FilePath &	base_output_path ()
const Delegate *	delegate ()

Friends
class	LibpngImageLibraryTest

Additional Inherited Members
Public Types inherited from net_instaweb::spriter::ImageLibraryInterface
typedef GoogleString	FilePath
Static Public Member Functions inherited from net_instaweb::spriter::ImageLibraryInterface
static ImageLibraryInterface *	ImageLibraryInterfaceFactory (const GoogleString &library_name)
	Use this factory method to get a usable image library object.

Detailed Description

An implementation of the ImageLibraryInterface using direct calls to libpng. The advantage of this over OpenCV is that it can handle transparency. The output of this library is always an RGBA PNG with 8 bits per channel (so 16-bit images will be degraded).

Member Function Documentation

virtual ImageLibraryInterface::Image* net_instaweb::spriter::LibpngImageLibrary::ReadFromFile ( const FilePath &  path )

protectedvirtual

Read an image from disk. Return NULL (after calling delegate method) on error. Caller owns the returned pointer.

Implements net_instaweb::spriter::ImageLibraryInterface.

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

• net/instaweb/spriter/libpng_image_library.h