spk::ComboBox Class Reference

Drop-down selection widget holding text/value pairs. More...

#include <spk_combo_box.hpp>

Inheritance diagram for spk::ComboBox:

Collaboration diagram for spk::ComboBox:

Public Member Functions
	ComboBox (const std::wstring &p_name, spk::Widget *p_parent)
	Builds a combo box widget.
template<typename TValue>
void	addElement (const std::wstring &p_text, TValue &&p_value)
	Adds an element to the combo box.
const std::wstring &	currentText () const
	Returns the current display text.
template<typename TValue>
TValue	currentValue () const
	Returns the current value cast to the requested type.
void	selectElement (const std::wstring &p_text)
	Selects an element by its display text.
void	selectElement (size_t p_index)
	Selects an element by index.
void	removeElement (const std::wstring &p_text)
	Removes an element by its display text.
void	removeElement (size_t p_index)
	Removes an element by index.
void	openPopup ()
	Opens the popup list.
Popup &	popup ()
	Returns the popup widget.
const Popup &	popup () const
	Returns the popup widget.
Public Member Functions inherited from spk::Widget
void	takeFocus (FocusType p_focusType)
	Grants this widget ownership of the requested focus type.
void	releaseFocus (FocusType p_focusType)
	Releases a previously acquired focus type.
bool	hasFocus (FocusType p_focusType) const
	Checks if this widget currently owns a focus type.
void	takeAllFocus ()
	Acquires both keyboard and mouse focus.
void	releaseAllFocus ()
	Releases both keyboard and mouse focus types.
	Widget (const std::wstring &p_name, Widget *p_parent)
	Builds a widget optionally attached to a parent.
void	addChild (Widget *p_child) override
	Adds a child widget and sorts the hierarchy by layer.
const float &	layer () const
	Current rendering layer of the widget.
void	setLayer (const float &p_newLayer)
	Updates the widget layer and propagates relative offsets to children.
const std::wstring &	name () const
	Retrieves the widget name.
void	setName (const std::wstring &p_name)
	Sets the widget name.
void	setGeometry (const spk::Extend2D &p_geometry) override
	Requests a specific viewport and scissor region for the widget.
const spk::Extend2D &	geometry () const
	Returns the current widget geometry.
const spk::OpenGL::ViewRegion &	viewRegion () const
	Accesses the computed view region.
const spk::OpenGL::FrameBufferObject &	frameBufferObject () const
	Returns the frame buffer object used for widget rendering.
const spk::OpenGL::FrameBufferObject &	fbo () const
	Alias for frameBufferObject().
void	requireGeometryChange ()
	Marks the widget view region as needing recomputation.
Public Member Functions inherited from spk::InherenceObject< Widget >
virtual void	removeChild (Widget *p_child)
	Removes a child from this node.
Widget *	parent () const
	Returns the parent pointer.
virtual std::vector< Widget * > &	children ()
	Returns the children vector.
void	clearChildren ()
	Clears the children list and resets each child's parent pointer.
Public Member Functions inherited from spk::ActivableObject
	ActivableObject ()
	Builds a deactivated object.
	ActivableObject (ActivationStatus p_initial)
	Builds with a custom initial activation state.
void	activate ()
	Sets the state to Activated.
void	deactivate ()
	Sets the state to Deactivated.
void	toggle ()
	Toggles between activated and deactivated states.
bool	isActive () const
	Checks whether the object is currently activated.
Contract	addActivationCallback (const Job &p_callback)
	Registers a callback executed when the object activates.
Contract	addDeactivationCallback (const Job &p_callback)
	Registers a callback executed when the object deactivates.
Public Member Functions inherited from spk::StatefulObject< ActivationStatus >
	StatefulObject (const ActivationStatus &p_initialState)
	Builds with an initial state.
StatefulObject &	operator= (const StatefulObject &p_other)=delete
void	setState (const ActivationStatus &p_newState)
	Sets a new state and triggers callbacks registered for it.
ActivationStatus	state () const
	Returns the current state.
Contract	addCallback (const ActivationStatus &p_state, const Job &p_callback)
	Subscribes a callback for a specific state.
Public Member Functions inherited from spk::ResizableElement
SizeHint &	sizeHint ()
	Returns mutable size hint data.
const SizeHint &	sizeHint () const
	Returns const size hint data.

Protected Member Functions
void	_onGeometryChange () override
	Updates popup and layout when geometry changes.
Protected Member Functions inherited from spk::Widget
virtual void	_onPaintEvent (spk::PaintEvent &p_event)
	Paint event hook for derived widgets.
virtual void	_onKeyPressEvent (spk::KeyPressEvent &p_event)
	Keyboard press handler for derived widgets.
virtual void	_onKeyReleaseEvent (spk::KeyReleaseEvent &p_event)
	Keyboard release handler for derived widgets.
virtual void	_onGlyphEvent (spk::GlyphEvent &p_event)
	Text glyph input handler for derived widgets.
virtual void	_onMousePressEvent (spk::MousePressEvent &p_event)
	Mouse button press handler for derived widgets.
virtual void	_onMouseReleaseEvent (spk::MouseReleaseEvent &p_event)
	Mouse button release handler for derived widgets.
virtual void	_onMouseDoubleClickEvent (spk::MouseDoubleClickEvent &p_event)
	Mouse double click handler for derived widgets.
virtual void	_onMouseMotionEvent (spk::MouseMotionEvent &p_event)
	Mouse motion handler for derived widgets.
virtual void	_onMouseWheelEvent (spk::MouseWheelEvent &p_event)
	Mouse wheel handler for derived widgets.
virtual void	_onEnterResizeModeEvent (spk::EnterResizeModeEvent &p_event)
	Callback for entering resize mode.
virtual void	_onResizeEvent (spk::ResizeEvent &p_event)
	Resize handling hook.
virtual void	_onExitResizeModeEvent (spk::ExitResizeModeEvent &p_event)
	Callback invoked when leaving resize mode.
virtual void	_onQuitEvent (spk::QuitEvent &p_event)
	Quit event handler hook.
virtual void	_onMoveEvent (spk::MoveEvent &p_event)
	Window move handler hook.
virtual void	_onFullScreenModeEvent (spk::FullScreenModeEvent &p_event)
	Full screen toggle handler hook.
virtual void	_onMaximizedModeEvent (spk::MaximizedModeEvent &p_event)
	Maximized mode change handler.
virtual void	_onFocusEvent (spk::FocusEvent &p_event)
	Focus change handler hook.
virtual void	_onUpdateEvent (spk::UpdateEvent &p_event)
	Frame update handler hook.

Additional Inherited Members
Public Types inherited from spk::Widget
enum class	FocusType { Keyboard = 0 , Mouse = 1 }
	Types of focus a widget can own.
Public Types inherited from spk::ActivableObject
using	Contract = StatefulObject<ActivationStatus>::Contract
	Subscription handle controlling callback lifetime.
using	Job = StatefulObject<ActivationStatus>::Job
	Callback signature executed on activation state changes.
Public Types inherited from spk::StatefulObject< ActivationStatus >
using	Contract
	Handle allowing subscribers to manage callback lifetimes.
using	Job
	Callable invoked when the object transitions to a state.
Static Public Member Functions inherited from spk::Widget
static Widget *	focusedWidget (FocusType p_focusType)
	Retrieves the widget currently owning a focus type.
Static Public Attributes inherited from spk::Widget
static const size_t	NbFocusType = 2
	Number of focus slots tracked at runtime.

Detailed Description

Drop-down selection widget holding text/value pairs.

spk::ComboBox box(L"Options", parent);
box.addElement(L"Easy", 0);

Constructor & Destructor Documentation

ComboBox()

spk::ComboBox::ComboBox	(	const std::wstring &	p_name,
		spk::Widget *	p_parent )

Builds a combo box widget.

Parameters

p_name	Widget name.
p_parent	Parent widget.

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Member Function Documentation

_onGeometryChange()

void spk::ComboBox::_onGeometryChange ( )

overrideprotectedvirtual

Updates popup and layout when geometry changes.

Reimplemented from spk::Widget.

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addElement()

template<typename TValue>

void spk::ComboBox::addElement ( const std::wstring & p_text, TValue && p_value )

inline

Adds an element to the combo box.

Template Parameters

TValue

Value type stored in the entry.

Parameters

p_text	Display text for the entry.
p_value	Value stored for the entry.

currentText()

const std::wstring & spk::ComboBox::currentText

(

)

const

Returns the current display text.

Returns

Current entry text.

currentValue()

template<typename TValue>

TValue spk::ComboBox::currentValue ( ) const

inline

Returns the current value cast to the requested type.

Template Parameters

TValue

Expected value type.

Returns

Current entry value.

Exceptions

std::runtime_error

When no element is selected.

popup() [1/2]

ComboBox::Popup & spk::ComboBox::popup

(

)

Returns the popup widget.

Returns

Mutable popup reference.

popup() [2/2]

const ComboBox::Popup & spk::ComboBox::popup

(

)

const

Returns the popup widget.

Returns

Const popup reference.

removeElement() [1/2]

void spk::ComboBox::removeElement

(

const std::wstring &

p_text

)

Removes an element by its display text.

Parameters

p_text

Entry text to remove.

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removeElement() [2/2]

void spk::ComboBox::removeElement

(

size_t

p_index

)

Removes an element by index.

Parameters

p_index

Entry index.

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selectElement() [1/2]

void spk::ComboBox::selectElement

(

const std::wstring &

p_text

)

Selects an element by its display text.

Parameters

p_text

Entry text to match.

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selectElement() [2/2]

void spk::ComboBox::selectElement

(

size_t

p_index

)

Selects an element by index.

Parameters

p_index

Entry index.

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

• includes/structure/widget/spk_combo_box.hpp
• srcs/structure/widget/spk_combo_box.cpp