Represents a collection of menus forming a menu system. More...

#include <LiquidMenu.h>

Public Member Functions
Constructors
	LiquidSystem (uint8_t startingMenu=1)
	The main constructor. More...

	LiquidSystem (LiquidMenu &liquidMenu1, LiquidMenu &liquidMenu2, uint8_t startingMenu=1)
	Constructor for 2 LiquidMenu objects. More...

	LiquidSystem (LiquidMenu &liquidMenu1, LiquidMenu &liquidMenu2, LiquidMenu &liquidMenu3, uint8_t startingMenu=1)
	Constructor for 3 LiquidMenu objects. More...

	LiquidSystem (LiquidMenu &liquidMenu1, LiquidMenu &liquidMenu2, LiquidMenu &liquidMenu3, LiquidMenu &liquidMenu4, uint8_t startingMenu=1)
	Constructor for 4 LiquidMenu objects. More...

Public methods
bool	add_menu (LiquidMenu &liquidMenu)
	Adds a LiquidMenu object to the menu system. More...

bool	change_menu (LiquidMenu &p_liquidMenu)
	Switches to the specified menu. More...

LiquidScreen *	get_currentScreen () const
	Returns a reference to the current screen. More...

void	next_screen ()
	Switches to the next screen. More...

void	operator++ ()
	Switches to the next screen. More...

void	operator++ (int)
	Switches to the next screen. More...

void	previous_screen ()
	Switches to the previous screen. More...

void	operator-- ()
	Switches to the previous screen. More...

void	operator-- (int)
	Switches to the previous screen. More...

bool	change_screen (LiquidScreen *p_liquidScreen)
	Switches to the specified screen. More...

bool	change_screen (uint8_t number)
	Switches to the specified screen. More...

bool	operator= (LiquidScreen *p_liquidScreen)
	Switches to the specified screen. More...

bool	operator= (uint8_t number)
	Switches to the specified screen. More...

void	switch_focus (bool forward=true)
	Switches the focus. More...

bool	set_focusedLine (uint8_t lineIndex)
	Directly select focused line. More...

uint8_t	get_focusedLine () const
	Get the index of the currently focused line. More...

bool	set_focusPosition (Position position)
	Sets the focus position for the whole menu at once. More...

bool	set_focusSymbol (Position position, uint8_t symbol[8])
	Changes the focus indicator's symbol. More...

bool	is_callable (uint8_t number) const
	Check if there is an attached function at the specified number. More...

bool	call_function (uint8_t number) const
	Calls an attached function specified by the number. More...

void	update () const
	Prints the current screen to the display. More...

void	softUpdate () const
	Prints the current screen to the display (without clearing). More...

Detailed Description

Represents a collection of menus forming a menu system.

A menu system is made up of LiquidMenu objects. It holds pointers to them and calls their functions depending on which one is active. This class is uses the same public methods as LiquidMenu with the addition of a method for adding a LiquidMenu object and a method for changing the currently active menu. This class is optional, it is used only if there is a need for multiple menus.

See also: LiquidMenu

Constructor & Destructor Documentation

◆ LiquidSystem() [1/4]

LiquidSystem::LiquidSystem ( uint8_t startingMenu = 1 )

explicit

The main constructor.

This is the main constructor that gets called every time.

Parameters

startingMenu - the number of the menu that will be shown first

◆ LiquidSystem() [2/4]

LiquidSystem::LiquidSystem	(	LiquidMenu &	liquidMenu1,
		LiquidMenu &	liquidMenu2,
		uint8_t	startingMenu = `1`
	)

Constructor for 2 LiquidMenu objects.

Parameters

&liquidMenu1	- pointer to a LiquidMenu object
&liquidMenu2	- pointer to a LiquidMenu object
startingMenu	- the number of the menu that will be shown first

◆ LiquidSystem() [3/4]

LiquidSystem::LiquidSystem	(	LiquidMenu &	liquidMenu1,
		LiquidMenu &	liquidMenu2,
		LiquidMenu &	liquidMenu3,
		uint8_t	startingMenu = `1`
	)

Constructor for 3 LiquidMenu objects.

Parameters

&liquidMenu1	- pointer to a LiquidMenu object
&liquidMenu2	- pointer to a LiquidMenu object
&liquidMenu3	- pointer to a LiquidMenu object
startingMenu	- the number of the menu that will be shown first

◆ LiquidSystem() [4/4]

LiquidSystem::LiquidSystem	(	LiquidMenu &	liquidMenu1,
		LiquidMenu &	liquidMenu2,
		LiquidMenu &	liquidMenu3,
		LiquidMenu &	liquidMenu4,
		uint8_t	startingMenu = `1`
	)

Constructor for 4 LiquidMenu objects.

Parameters

&liquidMenu1	- pointer to a LiquidMenu object
&liquidMenu2	- pointer to a LiquidMenu object
&liquidMenu3	- pointer to a LiquidMenu object
&liquidMenu4	- pointer to a LiquidMenu object
startingMenu	- the number of the menu that will be shown first

Member Function Documentation

◆ add_menu()

bool LiquidSystem::add_menu ( LiquidMenu & liquidMenu )

Adds a LiquidMenu object to the menu system.

Parameters

&liquidMenu - pointer to a LiquidMenu object

Returns: true on success and false if the maximum amount of menus has been reached

Note: The maximum amount of menus per menu system is specified in LiquidMenu_config.h as MAX_MENUS. The default is 12.

See also: LiquidMenu_config.h; MAX_MENUS

◆ call_function()

bool LiquidSystem::call_function ( uint8_t number ) const

Calls an attached function specified by the number.

Calls the function specified by the number argument for the current screen and for the focused line.

Parameters

number - number of the function in the array

Returns: true if there is a function at the specified number

Note: Function numbering starts from 1.

See also: bool LiquidLine::attach_function(uint8_t number, void (*function)(void))

◆ change_menu()

bool LiquidSystem::change_menu ( LiquidMenu & p_liquidMenu )

Switches to the specified menu.

Parameters

*p_liquidMenu - pointer to the LiquidMenu object

Returns: true on success and false if the menu is not found

◆ change_screen() [1/2]

bool LiquidSystem::change_screen ( LiquidScreen * p_liquidScreen )

Switches to the specified screen.

Parameters

*p_liquidScreen - pointer to the LiquidScreen object

Returns: true on success and false if the screen is not found

◆ change_screen() [2/2]

bool LiquidSystem::change_screen ( uint8_t number )

Switches to the specified screen.

Parameters

number - the number of the screen

Returns: true on success and false if the number of the screen is invalid.

◆ get_currentScreen()

LiquidScreen * LiquidSystem::get_currentScreen ( ) const

Returns a reference to the current screen.

Call this method to obtain a reference to the current screen.

Returns: a pointer to the current screen.

◆ get_focusedLine()

uint8_t LiquidSystem::get_focusedLine ( ) const

Get the index of the currently focused line.

Returns: the index of the currently focused line

◆ is_callable()

bool LiquidSystem::is_callable ( uint8_t number ) const

Check if there is an attached function at the specified number.

Parameters

number - number of the function in the array

Returns: true if there is a function at the specified number

Note: Function numbering starts from 1.

See also: bool LiquidLine::attach_function(uint8_t number, void (*function)(void))

◆ next_screen()

void LiquidSystem::next_screen ( )

Switches to the next screen.

◆ operator++() [1/2]

void LiquidSystem::operator++ ( )

Switches to the next screen.

Note: Prefix increment operator overloading.

◆ operator++() [2/2]

void LiquidSystem::operator++ ( int )

Switches to the next screen.

Note: Postfix increment operator overloading.

◆ operator--() [1/2]

void LiquidSystem::operator-- ( )

Switches to the previous screen.

Note: Prefix decrement operator overloading.

◆ operator--() [2/2]

void LiquidSystem::operator-- ( int )

Switches to the previous screen.

Note: Postfix decrement operator overloading.

◆ operator=() [1/2]

bool LiquidSystem::operator= ( LiquidScreen * p_liquidScreen )

Switches to the specified screen.

Parameters

&p_liquidScreen - pointer to the screen

Returns: true on success and false if the screen is not found

◆ operator=() [2/2]

bool LiquidSystem::operator= ( uint8_t number )

Switches to the specified screen.

Parameters

number - the number of the screen

Returns: true on success and false if the number of the screen is invalid.

◆ previous_screen()

void LiquidSystem::previous_screen ( )

Switches to the previous screen.

◆ set_focusedLine()

bool LiquidSystem::set_focusedLine ( uint8_t lineIndex )

Directly select focused line.

Parameters

lineIndex - index of the focused line

Returns: true: on success, false: when the selected line doesn't exist or it isn't focusable

◆ set_focusPosition()

bool LiquidSystem::set_focusPosition ( Position position )

Sets the focus position for the whole menu at once.

The valid positions are LEFT and RIGHT. CUSTOM is not valid for this function because it needs individual column and row for every line.

Parameters

position - LEFT or RIGHT

Returns: true on success and false if the position specified is invalid

Note: The Position is enum class. Use Position::(member) when specifying the position.

See also: Position

◆ set_focusSymbol()

bool LiquidSystem::set_focusSymbol	(	Position	position,
		uint8_t	symbol[8]
	)

Changes the focus indicator's symbol.

The symbol is changed for a particular position.

Parameters

position	- the position for which the symbol will be changed
symbol[]	- the symbol

Returns: true on success and false if the position specified is invalid

Note: The Position is enum class. Use Position::(member) when specifying the position.

See also: Position

◆ softUpdate()

void LiquidSystem::softUpdate ( ) const

Prints the current screen to the display (without clearing).

Call this method when there is a change in some of the variable attached and the new symbols cover all of the old symbols.

Note: This method doesn't clear the display.

◆ switch_focus()

void LiquidSystem::switch_focus ( bool forward = true )

Switches the focus.

Switches the focus to the next or previous line according to the passed parameter.

Parameters

forward - true for forward, false for backward

◆ update()

void LiquidSystem::update ( ) const

Prints the current screen to the display.

Call this method when there is a change in some of the variable attached.

The documentation for this class was generated from the following files:

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ LiquidSystem() [1/4]

◆ LiquidSystem() [2/4]

◆ LiquidSystem() [3/4]

◆ LiquidSystem() [4/4]

Member Function Documentation

◆ add_menu()

◆ call_function()

◆ change_menu()

◆ change_screen() [1/2]

◆ change_screen() [2/2]

◆ get_currentScreen()

◆ get_focusedLine()

◆ is_callable()

◆ next_screen()

◆ operator++() [1/2]

◆ operator++() [2/2]

◆ operator--() [1/2]

◆ operator--() [2/2]

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ previous_screen()

◆ set_focusedLine()

◆ set_focusPosition()

◆ set_focusSymbol()

◆ softUpdate()

◆ switch_focus()

◆ update()