Magnum::Trade::PngImporter class

PNG importer plugin.

Reference

Supports Portable Network Graphics (*.png) RGB, RGBA or grayscale images with 8 and 16 bits per channel. Palleted images and images with transparency mask are automatically converted to RGB(A).

This plugin depends on the Trade and libPNG libraries and is built if WITH_PNGIMPORTER is enabled when building Magnum Plugins. To use as a dynamic plugin, you need to load the "PngImporter" plugin from MAGNUM_PLUGINS_IMPORTER_DIR. To use as a static plugin or as a dependency of another plugin with CMake, you need to request the PngImporter component of the MagnumPlugins package and link to the MagnumPlugins::PngImporter target. See Downloading and building plugins, Plugin usage with CMake and Loading and using plugins for more information.

The images are imported with PixelFormat::RGB8Unorm / PixelFormat::RGB16Unorm, PixelFormat::RGBA8Unorm / PixelFormat::RGBA16Unorm or PixelFormat::R8Unorm / PixelFormat::R16Unorm. All imported images use default PixelStorage parameters.

Base classes

class AbstractImporter: Base for importer plugins.

Constructors, destructors, conversion operators

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

Private functions

auto doFeatures() const override -> Features virtual: Implementation for features()
auto doIsOpened() const override -> bool virtual: Implementation for isOpened()
void doClose() override virtual: Implementation for close()
void doOpenData(Containers::ArrayView<const char> data) override virtual: Implementation for openData()
auto doImage2DCount() const override -> UnsignedInt virtual: Implementation for image2DCount()
auto doImage2D(UnsignedInt id) override -> Containers::Optional<ImageData2D> virtual: Implementation for image2D()

Function documentation

UnsignedInt Magnum::Trade::PngImporter::doImage2DCount() const override virtual private

Implementation for image2DCount()