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/************************************************************************
*
* Copyright (C) 2020-2024 IRCAD France
* Copyright (C) 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 <service/controller.hpp>
#include <QString>
#include <filesystem>
namespace sight::module::ui::qt
{
/**
* @brief selector of theme/style.
* Theme should be stored in the rc/ folder of this module.
*
* When a new theme is applied on an application, it will be saved in preference file with "THEME" key.
* style_selector will first load & apply the theme saved in preference file.
*
* Theme names are generated by parsing the *.rcc (from *.qrc files) and then name are uppercased (ex: flatdark.rcc
* becames FLATDARK).
*
* To change a theme while application is running please use a preferences_configuration like :
* @code{.xml}
<service uid=".." type="sight::module::ui::qt::preferences_configuration">
<preference>
<type>combobox</type>
<name>Color Theme</name>
<key>THEME</key>
<values>DEFAULT,FLATDARK</values>
<default_value>DEFAULT</default_value>
</preference>
</service>
* @endcode
*
* Next connect the "parameters_modified" signal to the "update_from_preferences" slot of this service.
*
* @section Slots Slots
* - \b updateFromPrefs(): called when changing the preference key "THEME", apply the selected theme
* by reading preference file.
*
* @section XML XML Configuration
*
* @code{.xml}
<service uid="..." type="sight::module::ui::qt::style_selector" />
@endcode
*/
class style_selector : public service::controller
{
public:
SIGHT_DECLARE_SERVICE(style_selector, sight::service::controller);
/// Constructor, initializes slots.
style_selector() noexcept;
/// Destructor, clears the position map.
~style_selector() noexcept override;
protected:
/** @name Service methods ( override from service::base )
* @{
*/
/// Does nothing.
void configuring() override;
/**
* @brief Starts and setups the service by parsing rc folder to find availble themes.
*/
void starting() override;
/**
* @brief Does nothing
*/
void stopping() override;
/**
* @brief Does nothing.
*/
void updating() override;
private:
/// Applies the style _stylename.
void change_style(const std::string& _style_name);
///Slot: check preference key THEME, and update theme accordingly.
void update_from_prefs();
/// Map to stores theme names and their path.
std::map<std::string, std::filesystem::path> m_style_map;
};
} //namespace sight::module::ui::qt
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