inviwo::glui::Element Class Reference

graphical UI element for use in combination with Layout More...

#include <element.h>

Inheritance diagram for inviwo::glui::Element:

Public Types
enum class	UIState { Normal , Pressed , Checked }

Public Member Functions
virtual std::string	getClassIdentifier () const =0
	Element (const std::string &label, Processor &processor, Renderer &uiRenderer, UIOrientation orientation=UIOrientation::Horizontal)
void	setVisible (bool visible=true)
bool	isVisible () const
void	setEnabled (bool enable=true)
bool	isEnabled () const
void	setLabel (const std::string &str)
const std::string &	getLabel () const
void	setFontSize (int size)
int	getFontSize () const
void	setLabelBold (bool bold)
bool	isLabelBold () const
void	setLabelVisible (bool visible=true)
bool	isLabelVisible () const
void	setScalingFactor (double factor)
double	getScalingFactor () const
void	setOrientation (UIOrientation orientation)
UIOrientation	getOrientation () const
bool	isDirty () const
void	setWidgetExtent (const ivec2 &extent)
	sets the extent of the widget
const ivec2 &	getWidgetExtent () const
void	setWidgetExtentScaled (const ivec2 &extent)
	sets the extent of the widget
ivec2	getWidgetExtentScaled () const
	returns the true widget extent including scaling
const ivec2 &	getExtent ()
	return extent of the element, including both widget and label, and considering scaling
void	render (const ivec2 &origin, const size2_t &canvasDim)
	render the widget and its label at the given position
void	setHoverState (bool enable)
bool	isHovered () const
void	setPushedState (bool pushed)
bool	isPushed () const
void	setChecked (bool checked)
bool	isChecked () const
void	setAction (const std::function< void()> &action)
	sets the callback action when the user releases the mouse button
void	setPickingEventAction (std::function< void(PickingEvent *e)> pickingAction)

Protected Member Functions
void	triggerAction ()
	updates the UI state and triggers the callback action set by setAction(). This function is called when the user releases the mouse button.
void	setMouseMoveAction (const std::function< bool(const dvec2 &)> &action)
	set callback function for handling mouse movements based on a delta position. This callback gets called on mouse move events.
bool	moveAction (const dvec2 &delta)
	gets called on mouse move events
void	updateExtent ()
void	updateLabelPos ()
void	updateLabel ()
virtual ivec2	computeLabelPos (int descent) const =0
virtual UIState	uiState () const
virtual vec2	marginScale () const
virtual void	updateState ()
	is called before the action is triggered to update the internal UI state
virtual void	pushStateChanged ()
	It is called by setPushState after the internal push state has been updated.
virtual void	renderWidget (const ivec2 &origin, const size2_t &canvasDim)=0
void	renderLabel (const ivec2 &origin, const size2_t &canvasDim)
void	handlePickingEvent (PickingEvent *e)
TextRenderer &	getCurrentTextRenderer () const
	set up text renderer for rendering the label using current settings, i.e. font size, widget scaling, and whether it should be rendered bold

Static Protected Member Functions
static vec4	adjustColor (const vec4 &color)

Protected Attributes
std::function< void()>	action_
std::function< bool(const dvec2 &)>	moveAction_
	is called by mouseMoved()
std::function< void(PickingEvent *e)>	pickingAction_
bool	hovered_
bool	pushed_
bool	checked_
bool	visible_
bool	enabled_
bool	boldLabel_
bool	labelVisible_
int	labelFontSize_
UIOrientation	orientation_
ivec2	extent_ = ivec2(0)
ivec2	widgetPos_ = ivec2(0)
ivec2	widgetExtent_ = ivec2(0)
ivec2	labelPos_ = ivec2(0)
ivec2	labelExtent_ = ivec2(0)
double	scalingFactor_
std::string	labelStr_
bool	labelDirty_
std::shared_ptr< Texture2D >	labelTexture_
Processor *	processor_
Renderer *	uiRenderer_
PickingMapper	pickingMapper_
size_t	currentPickingID_

Detailed Description

graphical UI element for use in combination with Layout

Layout of a UI element: extent +-------------------------------------------------—+ | | | widgetExtent | | +-------—+ labelExtent | | | rendered | +--------------—+ | | | textures | | label | | | | + | +--------------—+ | | | picking | labelPos | | +-------—+ | | widgetPos | | | +-------------------------------------------------—+ (0,0)

See also

Layout, Renderer

Member Function Documentation

getCurrentTextRenderer()

TextRenderer & inviwo::glui::Element::getCurrentTextRenderer ( ) const

protected

set up text renderer for rendering the label using current settings, i.e. font size, widget scaling, and whether it should be rendered bold

Returns

reference to the set-up text renderer

getExtent()

const ivec2 & inviwo::glui::Element::getExtent

(

)

return extent of the element, including both widget and label, and considering scaling

Returns

total element extent

getWidgetExtentScaled()

ivec2 inviwo::glui::Element::getWidgetExtentScaled

(

)

const

returns the true widget extent including scaling

Returns

widget extent

moveAction()

bool inviwo::glui::Element::moveAction ( const dvec2 & delta )

protected

gets called on mouse move events

Parameters

delta

delta mouse position in screen coord, i.e. pixels, relative to pressed position

Returns

true if the movement triggers an update of the element

render()

void inviwo::glui::Element::render	(	const ivec2 &	origin,
		const size2_t &	canvasDim )

render the widget and its label at the given position

Parameters

origin	defines the lower left corner where the widget is positioned
canvasDim	dimensions of the output canvas

setMouseMoveAction()

void inviwo::glui::Element::setMouseMoveAction ( const std::function< bool(const dvec2 &)> & action )

protected

set callback function for handling mouse movements based on a delta position. This callback gets called on mouse move events.

Parameters

action

function taking one argument (2D delta position in screen coords) returning true if the movement triggers an update of the element

setPickingEventAction()

void inviwo::glui::Element::setPickingEventAction

(

std::function< void(PickingEvent *e)>

pickingAction

)

Sets a callback function for picking events to enable custom behaviors This function is called (if set) in the picking event handling after the internal event handling is done.

setWidgetExtent()

void inviwo::glui::Element::setWidgetExtent

(

const ivec2 &

extent

)

sets the extent of the widget

Parameters

extent

new extent of the widget

setWidgetExtentScaled()

void inviwo::glui::Element::setWidgetExtentScaled

(

const ivec2 &

extent

)

sets the extent of the widget

Parameters

extent

new extent of the widget (including scaling)

triggerAction()

void inviwo::glui::Element::triggerAction ( )

protected

updates the UI state and triggers the callback action set by setAction(). This function is called when the user releases the mouse button.

See also

setAction

updateState()

virtual void inviwo::glui::Element::updateState ( )

inlineprotectedvirtual

is called before the action is triggered to update the internal UI state

See also

triggerAction, setAction

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

• element.h