xtd 0.2.0
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xtd::configuration::settings Class Reference
﹡ libraries » xtd.core | system » configuration
Inheritance diagram for xtd::configuration::settings:
xtd::object

Definition

Represent settings associate to the application.

Header
#include <xtd/configuration/settings>
Namespace
xtd
Library
xtd.core
Remarks
The basic settings path can be obtained with the command : xtd::environment::get_know_folder_path(xtd::environment::special_folder::application_data);.
On Windows settings are stored in /Users/($USER)/AppData/Roaming/company_name/product_name.ini file.
On macos settings are stored in ~/Library/Preferences/company_name/product_name Preferences file.
On linux settings are stored in ~/.consig/company_name/product_name.conf file.
The product_name is equal to the xtd::reflection::assembly::product() property of the xtd::reflection::assembly::get_executing_assembly() assembly if not empty; otherwise is equal to the filename of the first arguemnt of main.
The company_name is equal to the xtd::reflection::assembly::company() property of the xtd::reflection::assembly::get_executing_assembly() assembly if not empty; otherwise is equal to product_name.
Examples
The following code example demonstrates the use of xtd::configuration::settings class with CMake setting commands.

• application_Settings.cpp :

#include "../properties/settings.hpp"
#include <xtd/forms/application>
#include <xtd/forms/button>
#include <xtd/forms/color_picker>
#include <xtd/forms/form>
using namespace application_settings::properties;
using namespace xtd::forms;
auto main() -> int {
auto main_form = form::create(settings::default_settings().text(), form_start_position::manual);
auto back_color_picker = color_picker::create(main_form, main_form.back_color(), {10, 10}, {75, 25});
back_color_picker.color_picker_changed += [&] {
main_form.back_color(back_color_picker.color());
};
auto save_button = button::create(main_form, "&Save", {90, 10});
save_button.click += [&] {
settings::default_settings().size(main_form.client_size());
settings::default_settings().location(main_form.location());
settings::default_settings().back_color(main_form.back_color());
settings::default_settings().save();
};
auto reload_button = button::create(main_form, "&Reload", {170, 10});
reload_button.click += [&] {
main_form.client_size(settings::default_settings().size());
main_form.location(settings::default_settings().location());
main_form.back_color(settings::default_settings().back_color());
back_color_picker.color(settings::default_settings().back_color());
};
auto reset_button = button::create(main_form, "R&eset", {250, 10});
reset_button.click += [&] {
settings::default_settings().reset();
reload_button.perform_click();
};
reload_button.perform_click();
application::run(main_form);
}
xtd::size
size_t size
Represents a size of any object in bytes.
Definition size.hpp:23
xtd::forms::bounds_specified::location
@ location
Specifies that both the x and y coordinates of the control are defined.
xtd::forms
The xtd::forms namespace contains classes for creating Windows-based applications that take full adva...
Definition xtd_about_box.hpp:12

• properties/settings.cmake :

setting_include(xtd/drawing/point)
setting_include(xtd/drawing/size)
setting_include(xtd/drawing/system_colors)
setting(back_color xtd::drawing::color USER "xtd::drawing::system_colors::control()")
setting(location xtd::drawing::point USER "{100, 50}")
setting(size xtd::drawing::size USER "{335, 45}")
setting(text xtd::string APPLICATION "\"Settings example\"")

• The generated properties/settings.h :

#pragma region xtd generated code
// This code was generated by CMake script.
//
// Changes to this file may cause incorrect behavior and will be lost if the code is regenerated.
#pragma once
#include <xtd/drawing/point>
#include <xtd/drawing/size>
#include <xtd/drawing/system_colors>
#include <xtd/configuration/settings>
namespace application_settings::properties {
// @brief A strongly typed settings class, for storing user and system settings
// @details This class was auto-generated by CMake script. To add or remove a member, edit your CMakeList.txt or properties/settings.cmake file then rerun cmake tools.
// @remarks See [Settings](https://gammasoft71.github.io/xtd/docs/documentation/guides/xtd.core/settings) for more informations.
class settings : public xtd::object {
public:
// @name Public Constructors
// @{
// @brief Initializes a new instance of the application_settings::properties::settings class.
// @remarks All properties are reloaded with the last saved value.
settings() noexcept : settings {true} {}
// @brief Initializes a new instance of the application_settings::properties::settings class.
// @param load If true all properties are reloaded with the last saved values; otherwise none.
explicit settings(bool load) noexcept {
if (load) reload();
}
// @}
// cond
settings(settings&&) noexcept = default;
settings(const settings&) noexcept = default;
settings& operator =(const settings&) noexcept = default;
// endcond
// @name Public Properties
// @{
// @brief Gets the back_color user setting property.
// @return A xtd::drawing::color value.
xtd::drawing::color back_color() const noexcept {return back_color_;}
// @brief Sets the back_color user setting property.
// @param value A xtd::drawing::color value.
settings& back_color(xtd::drawing::color value) noexcept {
back_color_ = value;
return *this;
}
// @brief Gets the location user setting property.
// @return A xtd::drawing::point value.
xtd::drawing::point location() const noexcept {return location_;}
// @brief Sets the location user setting property.
// @param value A xtd::drawing::point value.
settings& location(xtd::drawing::point value) noexcept {
location_ = value;
return *this;
}
// @brief Gets the size user setting property.
// @return A xtd::drawing::size value.
xtd::drawing::size size() const noexcept {return size_;}
// @brief Sets the size user setting property.
// @param value A xtd::drawing::size value.
settings& size(xtd::drawing::size value) noexcept {
size_ = value;
return *this;
}
// @brief Gets the text system setting property.
// @return A xtd::string value.
xtd::string text() const noexcept {return "Settings example";}
// @}
// @name Public Methods
// @{
// @brief Reload all properties with the last saved values.
// @remarks See [Settings](https://gammasoft71.github.io/xtd/docs/documentation/guides/xtd.core/settings) for more informations.
void reload() noexcept {
back_color_ = settings_.read("back_color", back_color_);
location_ = settings_.read("location", location_);
size_ = settings_.read("size", size_);
}
// @brief Reset all properties to their default values.
// @remarks See [Settings](https://gammasoft71.github.io/xtd/docs/documentation/guides/xtd.core/settings) for more informations.
void reset() noexcept {
settings_.reset();
*this = settings {false};
}
// @brief Save all properties.
// @remarks See [Settings](https://gammasoft71.github.io/xtd/docs/documentation/guides/xtd.core/settings) for more informations.
void save() noexcept {
settings_.write("back_color", back_color_);
settings_.write("location", location_);
settings_.write("size", size_);
settings_.save();
}
// @}
// @name Public Static Properties
// @{
// @brief Gets the default instance of settings.
// @return The default instance.
// @remarks At the first call all properties are reloaded with the last saved values.
static settings& default_settings() noexcept {
static auto default_settings = settings {};
return default_settings;
}
// @}
private:
xtd::configuration::settings settings_;
xtd::drawing::color back_color_ {xtd::drawing::system_colors::control()};
xtd::drawing::point location_ {{100, 50}};
xtd::drawing::size size_ {{335, 45}};
};
}
#pragma endregion
xtd::basic_string
Represents text as a sequence of character units.
Definition basic_string.hpp:79
xtd::configuration::settings
Represent settings associate to the application.
Definition settings.hpp:174
xtd::configuration::settings::write
void write(const xtd::string &key, const xtd::string &value)
Writes a specified value for specified key.
xtd::drawing::color
Represents an ARGB (alpha, red, green, blue) color.
Definition color.hpp:49
xtd::drawing::point
Represents an ordered pair of integer x- and y-coordinates that defines a point in a two-dimensional ...
Definition point.hpp:54
xtd::drawing::size
Stores an ordered pair of integers, which specify a height and width.
Definition size.hpp:31
xtd::drawing::system_colors::control
static xtd::drawing::color control()
Gets a xtd::drawing::color structure that is the face color of a 3-D element.
xtd::object
Supports all classes in the xtd class hierarchy and provides low-level services to derived classes....
Definition object.hpp:42
xtd::forms::status_bar_panel_style::text
@ text
The xtd::forms::status_bar_panel displays text in the standard font.
xtd
The xtd namespace contains all fundamental classes to access Hardware, Os, System,...
Definition xtd_about_box.hpp:10

The following code example demonstrates the use of xtd::configuration::settings class without CMake setting commands.

#include <xtd/configuration/settings>
#include <xtd/forms/application>
#include <xtd/forms/button>
#include <xtd/forms/color_picker>
#include <xtd/forms/form>
using namespace xtd::drawing;
using namespace xtd::forms;
auto main() -> int {
auto settings = xtd::configuration::settings {};
auto main_form = form::create("Settings example", form_start_position::manual);
auto back_color_picker = color_picker::create(main_form, main_form.back_color(), {10, 10}, {75, 25});
back_color_picker.color_picker_changed += [&] {
main_form.back_color(back_color_picker.color());
};
auto save_button = button::create(main_form, "&Save", {90, 10});
save_button.click += [&] {
settings.write("size", main_form.client_size());
settings.write("location", main_form.location());
settings.write("back_color", main_form.back_color());
settings.save();
};
auto reload_button = button::create(main_form, "&Reload", {170, 10});
reload_button.click += [&] {
main_form.client_size(settings.read("size", size {335, 45}));
main_form.location(settings.read("location", point {100, 50}));
main_form.back_color(settings.read("back_color", main_form.back_color()));
back_color_picker.color(main_form.back_color());
};
auto reset_button = button::create(main_form, "R&eset", {250, 10});
reset_button.click += [&] {
settings.reset();
reload_button.perform_click();
};
reload_button.perform_click();
application::run(main_form);
}
xtd::configuration::settings::save
void save()
Save application settings.
xtd::configuration::settings::read
xtd::string read(const xtd::string &key, const xtd::string &default_value)
Reads a value for specified key. If not found default value is used.
xtd::configuration::settings::reset
void reset()
Reset application settings.
xtd::drawing
The xtd::drawing namespace provides access to GDI+ basic graphics functionality. More advanced functi...
Definition brush.hpp:18
Examples
application_settings_without_cmake_setting_commands.cpp.

Public Constructors

 settings ()
 Initializes a new instance of settings class.
 

Public Properties

const xtd::string & file_path () const noexcept
 Gets the file path of the application settings.
 

Public Methods

xtd::string read (const xtd::string &key, const xtd::string &default_value)
 Reads a value for specified key. If not found default value is used.
 
template<typename type_t >
type_t read (const xtd::string &key, const type_t &default_value)
 Reads a value for specified key. If not found default value is used.
 
void reset ()
 Reset application settings.
 
void save ()
 Save application settings.
 
void write (const xtd::string &key, const xtd::string &value)
 Writes a specified value for specified key.
 
template<typename type_t >
void write (const xtd::string &key, type_t &&value)
 Writes a specified value for specified key.
 

Additional Inherited Members

- Public Member Functions inherited from xtd::object
 object ()=default
 Create a new instance of the ultimate base class object.
 
virtual bool equals (const object &obj) const noexcept
 Determines whether the specified object is equal to the current object.
 
virtual size_t get_hash_code () const noexcept
 Serves as a hash function for a particular type.
 
virtual type_object get_type () const noexcept
 Gets the type of the current instance.
 
template<typename object_t >
xtd::uptr< object_t > memberwise_clone () const
 Creates a shallow copy of the current object.
 
virtual xtd::string to_string () const noexcept
 Returns a xtd::string that represents the current object.
 
- Static Public Member Functions inherited from xtd::object
template<typename object_a_t , typename object_b_t >
static bool equals (const object_a_t &object_a, const object_b_t &object_b) noexcept
 Determines whether the specified object instances are considered equal.
 
template<typename object_a_t , typename object_b_t >
static bool reference_equals (const object_a_t &object_a, const object_b_t &object_b) noexcept
 Determines whether the specified object instances are the same instance.
 

Constructor & Destructor Documentation

◆ settings()

xtd::configuration::settings::settings ( )

Initializes a new instance of settings class.

Member Function Documentation

◆ file_path()

const xtd::string & xtd::configuration::settings::file_path ( ) const
noexcept

Gets the file path of the application settings.

Returns
The file path of the application settings.
Remarks
The basic settings path can be obtained with the command : xtd::environment::get_know_folder_path(xtd::environment::special_folder::application_data);.
On Windows settings are stored in /Users/($USER)/AppData/Roaming/company_name/product_name.ini file.
On macos settings are stored in ~/Library/Preferences/company_name/product_name Preferences file.
On linux settings are stored in ~/.consig/company_name/product_name.conf file.
The product_name is equal to the xtd::reflection::assembly::product() property of the xtd::reflection::assembly::get_executing_assembly() assembly if not empty; otherwise is equal to the filename of the first arguemnt of main.
The company_name is equal to the xtd::reflection::assembly::company() property of the xtd::reflection::assembly::get_executing_assembly() assembly if not empty; otherwise is equal to product_name.
Warning
Don't manipulate the file yourself, otherwise the expected result may be undefined.

◆ read() [1/2]

xtd::string xtd::configuration::settings::read ( const xtd::string &  key,
const xtd::string &  default_value 
)

Reads a value for specified key. If not found default value is used.

Parameters
keyThe key used to read a value.
default_valueA string used if value not found.
Returns
A string that represent the value associate to the key.
Examples
application_settings_without_cmake_setting_commands.cpp.

◆ read() [2/2]

template<typename type_t >
type_t xtd::configuration::settings::read ( const xtd::string &  key,
const type_t &  default_value 
)
inline

Reads a value for specified key. If not found default value is used.

Template Parameters
type_tThe type of value to read.
Parameters
keyThe key used to read a value.
default_valueA string used if value not found.
Returns
A type_t that represent the value associate to the key.

◆ reset()

void xtd::configuration::settings::reset ( )

Reset application settings.

Remarks
The settings are cleared and the application settings file is removed.
To write permanently use the xtd::configuration::settings::save method.
Examples
application_settings_without_cmake_setting_commands.cpp.

◆ save()

void xtd::configuration::settings::save ( )

Save application settings.

Remarks
The settings are saved in the application settings file.
Examples
application_settings_without_cmake_setting_commands.cpp.

◆ write() [1/2]

void xtd::configuration::settings::write ( const xtd::string &  key,
const xtd::string &  value 
)

Writes a specified value for specified key.

Parameters
keyThe key used to write a value.
valueA string to write.
Remarks
To write permanently use the xtd::configuration::settings::save method.
Examples
application_settings_without_cmake_setting_commands.cpp.

◆ write() [2/2]

template<typename type_t >
void xtd::configuration::settings::write ( const xtd::string &  key,
type_t &&  value 
)
inline

Writes a specified value for specified key.

Template Parameters
type_tThe type of value to write.
Parameters
keyThe key used to write a value.
valueA type_t to write.
Remarks
To write permanently use the xtd::configuration::settings::save method.
The documentation for this class was generated from the following file:
Generated on Sun Dec 1 2024 09:55:52 for xtd by Gammasoft. All rights reserved.