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/************************************************************************
*
* Copyright (C) 2009-2025 IRCAD France
* Copyright (C) 2012-2020 IHU Strasbourg
*
* This file is part of Sight.
*
* Sight is free software: you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Sight is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Sight. If not, see <https://www.gnu.org/licenses/>.
*
***********************************************************************/
#pragma once
#include <core/progress/observer.hpp>
#include <io/__/service/reader.hpp>
#include <filesystem>
namespace sight::data
{
class image;
} // namespace sight::data
namespace sight::module::io::vtk
{
/**
* @brief Service reading a VTK image using the fwVtkIO lib.
*
* @section Signals Signals
* - \b monitor_created(SPTR(core::progress::monitor)): emitted to display a progress bar while the image is loading,
* it should be connected to a progress bar.
*
* @section Slots Slots
* - \b readFile(std::filesystem::path) : read the given file
*
* @section XML XML Configuration
*
* @code{.xml}
<service type="sight::module::io::vtk::image_reader">
<inout key="data" uid="..." />
<file>...</file>
</service>
@endcode
* @subsection In-Out In-Out
* - \b data [sight::data::image]: loaded image.
* @subsection Configuration Configuration
* - \b file (optional): path of the image to load, if it is not defined, 'open_location_dialog()' should be called to
* define the path.
*/
class image_reader : public sight::io::service::reader
{
public:
image_reader() noexcept;
~image_reader() noexcept override = default;
SIGHT_DECLARE_SERVICE(image_reader, sight::io::service::reader);
/**
* @brief Configure the image path with a dialogBox.
*
* This method is used to find the file path using a file selector.
*/
void open_location_dialog() override;
/**
* @brief This method is used to load an vtk image using a file path.
* @param[in] _vtk_file file system path of vtk image
* @param[out] _image new empty image that will contain image loaded, if reading process is a success.
* @return bool \b true if the image loading is a success and \b false if it fails
*/
static bool load_image(
const std::filesystem::path& _vtk_file,
std::shared_ptr<data::image> _image,
SPTR(core::progress::observer) _progress
);
protected:
sight::io::service::path_type_t get_path_type() const override;
/// Method called when the service is started, does nothing.
void starting() override;
/// Method called when the service is stopped, does nothing.
void stopping() override;
/// Method called when the service is stopped, does nothing.
void configuring() override;
/**
* @brief Updating method execute the read process.
*
* This method is used to update the service.
* The image is read.
*/
void updating() override;
/// Info method gives some informations on service.
void info(std::ostream& _sstream) override;
private:
/// Image path, location of image on filesystem.
std::filesystem::path m_fs_img_path;
};
} // namespace sight::module::io::vtk
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