VirtualKeyboard::Key Class Reference

Key widget for the Keyboard widget. More...

Public Member Functions
	Key (const Image &img, int link, double length=1.0) noexcept
	Key (const Image &img, KeyboardCode keycode, double length=1.0) noexcept
	Key (const std::string &label, int link, double length=1.0) noexcept
	Key (const std::string &label, KeyboardCode keycode, double length=1.0) noexcept
	Key (uint32_t unicode, double length=1.0) noexcept
	Key (uint32_t unicode, PanelKeys keys_multichoice, double length=1.0) noexcept
void	color (Palette::ColorId id, const Pattern &color, Palette::GroupId group=Palette::GroupId::normal)
	Set the key color. More...
void	font (const Font &font)
	Set the key font. More...

Protected Attributes
std::shared_ptr< Button >	m_button {nullptr}
	Button associated with the key. More...
KeyboardCode	m_keycode {EKEY_UNKNOWN}
	Code of the key. More...
PanelKeys	m_keys_multichoice
	Keys for the multichoice panel. More...
double	m_length
	Length multiplicator of the panel default key size. More...
int	m_link {-1}
	Id of the MainPanel to display when clicking on this button. More...
std::shared_ptr< Panel >	m_multichoice_panel {nullptr}
	Multichoice panel to display on long press event. More...
uint32_t	m_unicode {0}
	UTF32 code point for the key. More...

Friends
class	VirtualKeyboard

Detailed Description

Key widget for the Keyboard widget.

This widget allows to describe a key that will be used by the Keyboard widget. There are different kinds of keys:

• The basic key corresponds to a simple printable character defined by its unicode value.
• For non printable characters, the keycode has to be set. The label of the key can be a string or an image.
• The link key allows to switch from one panel to another. The label of the key can be a string or an image.
• The multichoice key is a basic key which allows to display a multichoice panel with several keys when a long press event happens.

Even if the VirtualKeyboard class automatically computes the base size of the keys, it's still possible to customize the size of a key by setting its length which is a factor for the base size width.

Constructor & Destructor Documentation

Key() [1/6]

Key ( uint32_t  unicode, double  length = 1.0  )

explicitnoexcept

Parameters

[in]	unicode	UTF32 code point for the key. It's also the label of the key.
[in]	length	Length of the key.

Key() [2/6]

Key ( const std::string &  label, KeyboardCode  keycode, double  length = 1.0  )

explicitnoexcept

Parameters

[in]	label	Label of the key.
[in]	keycode	Code of the key.
[in]	length	Length of the key.

Key() [3/6]

Key ( const Image &  img, KeyboardCode  keycode, double  length = 1.0  )

explicitnoexcept

Parameters

[in]	img	Image of the key.
[in]	keycode	Code of the key.
[in]	length	Length of the key.

Key() [4/6]

Key ( const std::string &  label, int  link, double  length = 1.0  )

explicitnoexcept

Parameters

[in]	label	Label of the key.
[in]	link	Id of the main panel to display when clicking on this key. The id depends on the order of registration of the main panels. It starts from 0.
[in]	length	Length of the key.

Key() [5/6]

Key ( const Image &  img, int  link, double  length = 1.0  )

explicitnoexcept

Parameters

[in]	img	Image of the key.
[in]	link	Id of the main panel to display when clicking on this key. The id depends on the order of registration of the main panels. It starts from 0.
[in]	length	Length of the key.

Key() [6/6]

Key ( uint32_t  unicode, PanelKeys  keys_multichoice, double  length = 1.0  )

explicitnoexcept

Parameters

[in]	unicode	UTF32 code point for the key.
[in]	keys_multichoice	Multichoice panel that has to be displayed after a long touch event.
[in]	length	Length of the key.

Member Function Documentation

color()

void color	(	Palette::ColorId	id,
		const Pattern &	color,
		Palette::GroupId	group = Palette::GroupId::normal
	)

Set the key color.

font()

void font

(

const Font &

font

)

Set the key font.

Friends And Related Function Documentation

VirtualKeyboard

friend class VirtualKeyboard

friend

Member Data Documentation

m_button

std::shared_ptr<Button> m_button {nullptr}

protected

Button associated with the key.

m_keycode

KeyboardCode m_keycode {EKEY_UNKNOWN}

protected

Code of the key.

m_keys_multichoice

PanelKeys m_keys_multichoice

protected

Keys for the multichoice panel.

m_length

double m_length

protected

Length multiplicator of the panel default key size.

m_link

int m_link {-1}

protected

Id of the MainPanel to display when clicking on this button.

m_multichoice_panel

std::shared_ptr<Panel> m_multichoice_panel {nullptr}

protected

Multichoice panel to display on long press event.

m_unicode

uint32_t m_unicode {0}

protected

UTF32 code point for the key.