Magnum::Trade::PngImageConverter class

PNG image converter plugin.

Creates Portable Network Graphics (*.png) files from images with format PixelFormat::R8Unorm / PixelFormat::R16Unorm, PixelFormat::RG8Unorm / PixelFormat::RG16Unorm, PixelFormat::RGB8Unorm / PixelFormat::RGB16Unorm or PixelFormat::RGBA8Unorm / PixelFormat::RGBA16Unorm. You can use PngImporter to import images in this format.

Usage

This plugin depends on the Trade and libPNG libraries and is built if WITH_PNGIMAGECONVERTER is enabled when building Magnum Plugins. To use as a dynamic plugin, load "PngImageConverter" via Corrade::PluginManager::Manager.

Additionally, if you're using Magnum as a CMake subproject, bundle the magnum-plugins repository and do the following. Using libPNG itself as a CMake subproject isn't tested at the moment, so you need to provide it as a system dependency and point CMAKE_PREFIX_PATH to its installation dir if necessary.

set(WITH_PNGIMAGECONVERTER ON CACHE BOOL "" FORCE)
add_subdirectory(magnum-plugins EXCLUDE_FROM_ALL)

# So the dynamically loaded plugin gets built implicitly
add_dependencies(your-app MagnumPlugins::PngImageConverter)

To use as a static plugin or as a dependency of another plugin with CMake, put FindMagnumPlugins.cmake into your modules/ directory, request the PngImageConverter component of the MagnumPlugins package and link to the MagnumPlugins::PngImageConverter target:

find_package(MagnumPlugins REQUIRED PngImageConverter)

# ...
target_link_libraries(your-app PRIVATE MagnumPlugins::PngImageConverter)

See Downloading and building plugins, Plugin usage with CMake, Loading and using plugins and File format support for more information.

Base classes

class AbstractImageConverter
Base for image converter plugins.

Constructors, destructors, conversion operators

PngImageConverter() explicit
Default constructor.
PngImageConverter(PluginManager::AbstractManager& manager, const std::string& plugin) explicit
Plugin manager constructor.