Inheritance diagram for z::Slider:

Collaboration diagram for z::Slider:

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Public Member Functions
	Slider (cv::Rect2i r, int start, int stop, int step)

int	value ()

void	value (int)

void	on_change (std::function< void(int)> f)

void	draw ()

Public Member Functions inherited from z::Widget
	Widget (cv::Rect_< int > r)

Widget &	operator= (const Widget &r)

bool	focus () const

virtual void	focus (bool)

virtual void	event_callback (int event, int x, int y)

virtual void	show ()

virtual std::string	type () const

void	resize (cv::Rect2i r)

void	update ()

virtual void	on_register ()
	will be called when widget is added to a window

virtual bool	is_window () const

int	zIndex ()

void	zIndex (int v)

void	hidden (bool v)

void	activated (bool v)

bool	hidden () const

bool	activated () const

void	hide ()

float	alpha () const

void	alpha (float f)

void	shade_rect (cv::Rect2i r, int shade=3, cv::Vec3b color=widget_color_, cv::Vec3b upper_left=highlight_color_, cv::Vec3b lower_right=click_color_)

Protected Attributes
int	value_

int	start_

int	end_

int	step_

int	logical_length_

int	physical_length_

bool	hold_ = false

Protected Attributes inherited from z::Widget
float	alpha_ = 1
	alpha value of widget. Widgets can be overlapped. Alpha value will be calculated in such cases.

bool	hidden_ = false
	if hidden, a widget will not show on window, but still can react to event.

bool	activated_ = true
	deactivated widget cannot get focus so that it cannot react to events.

bool	focus_ = false

int	zIndex_ = 0
	higher zIndex widget will be in front of lower zIndex widget.

Additional Inherited Members
Public Attributes inherited from z::Widget
std::map< int, std::function< void(int, int)> >	gui_callback_
	map<int : event, function(x, y)>. library will draw change in widget graphics after gui_callback

std::map< int, std::function< void(int, int)> >	user_callback_

cv::Mat3b	mat_
	Matrix that contains widget shape.

Window *	parent_ = nullptr
	pointer to parent window that is containing this widget

Static Protected Attributes inherited from z::Widget
static const cv::Vec3b	background_color_ = {200, 200, 200}

static const cv::Vec3b	widget_color_ = {220, 220, 220}

static const cv::Vec3b	highlight_color_ = {240, 240, 240}

static const cv::Vec3b	click_color_ = {180, 180, 180}

static cv::Ptr< cv::freetype::FreeType2 >	ft2_
	freetype2 font. CJK font needed

Constructor & Destructor Documentation

◆ Slider()

create a Slider with size and position of r.

Parameters

start	left most value of slider
end	right most value of slider
step	to increase when you press a direction key.

void z::Slider::draw ( )

draw the slider

int z::Slider::value ( )

get current value

void z::Slider::value ( int v )

sets the value

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