ToggleButtonTrigger

A toggle button trigger. This trigger will create a button that reacts on clicks. This means it will call the set action when it gets a touch released event, just like a ClickButtonTrigger. The difference being that a ToggleButtonTrigger will stay in pressed state until it is clicked again.

The ToggleButtonTrigger can be combined with one or more of the ButtonStyle classes to create a fully functional button.

Inherits from: AbstractButtonContainer, Container, Drawable

Public Functions


void	forceState(bool activeState)
	Allows the button to be forced into either the pressed state, or the normal state.

bool	getToggleCanceled()
	Gets toggle canceled.

virtual void	handleClickEvent(const ClickEvent & event)
	Defines the event handler interface for ClickEvents.

void	setToggleCanceled(bool isToggleCanceled)
	Sets toggle canceled.

	ToggleButtonTrigger()

Protected Attributes


bool	toggleCanceled
	True if toggle canceled.

Additional inherited members

Public Functions inherited from AbstractButtonContainer


	AbstractButtonContainer()


virtual void	executeAction()
	Executes the previously set action.

uint8_t	getAlpha() const
	Gets the current alpha value of the widget.

bool	getPressed()
	Gets the pressed state.

void	setAction(GenericCallback< const AbstractButtonContainer & > & callback)
	Sets an action callback to be executed by the subclass of AbstractContainerButton.

void	setAlpha(uint8_t newAlpha)
	Sets the opacity (alpha value).

void	setPressed(bool isPressed)
	Sets the pressed state to the given state.

Protected Functions inherited from AbstractButtonContainer


virtual void	handleAlphaUpdated()
	Handles what should happen when the alpha is updated.

virtual void	handlePressedUpdated()
	Handles what should happen when the pressed state is updated.

Protected Attributes inherited from AbstractButtonContainer


GenericCallback< const AbstractButtonContainer & > *	action
	The action to be executed.

uint8_t	alpha
	The current alpha value. 255 denotes solid, 0 denotes completely invisible.

bool	pressed
	True if pressed.

Public Functions inherited from Container


virtual void	add(Drawable & d)
	Adds a Drawable instance as child to this Container.

	Container()


virtual bool	contains(const Drawable & d)
	Query if a given Drawable has been added directly to this Container.

virtual void	draw(const Rect & invalidatedArea) const
	Draw this drawable.

virtual void	forEachChild(GenericCallback< Drawable & > * function)
	Executes the specified callback function for each child in the Container.

virtual Drawable *	getFirstChild()
	Obtain a pointer to the first child of this container.

virtual void	getLastChild(int16_t x, int16_t y, Drawable ** last)
	Gets the last child in the list of children in this Container.

virtual void	getLastChildNear(int16_t x, int16_t y, Drawable * last, int16_t fingerAdjustmentX, int16_t * fingerAdjustmentY)
	Works similar to getLastChild() but also considers the current set finger size in HAL.

virtual Rect	getSolidRect() const
	Get (the largest possible) rectangle that is guaranteed to be solid (opaque).

virtual void	insert(Drawable * previous, Drawable & d)
	Inserts a Drawable after a specific child node.

virtual void	remove(Drawable & d)
	Removes a Drawable from the container by removing it from the linked list of children.

virtual void	removeAll()
	Removes all children in the Container by resetting their parent and sibling pointers.

virtual void	unlink()
	Removes all children by unlinking the first child.

Protected Functions inherited from Container


virtual Rect	getContainedArea() const
	Gets a rectangle describing the total area covered by the children of this container.

virtual void	moveChildrenRelative(int16_t deltaX, int16_t deltaY)
	Calls moveRelative on all children.

Protected Attributes inherited from Container


Drawable *	firstChild
	Pointer to the first child of this container. Subsequent children can be found through firstChild's nextSibling.

Public Functions inherited from Drawable


void	center()
	Centers the Drawable inside its parent.

void	centerX()
	Center the Drawable horizontally inside its parent.

void	centerY()
	Center the Drawable vertically inside its parent.

virtual void	childGeometryChanged()
	This function can be called on parent nodes to signal that the size or position of one or more of its children has changed.

virtual void	draw(const Rect & invalidatedArea) const =0
	Draw this drawable.

	Drawable()
	Initializes a new instance of the Drawable class.

void	drawToDynamicBitmap(BitmapId id)
	Render the Drawable object into a dynamic bitmap.

void	expand(int margin =0)
	Expands the Drawable to have the same size as its parent with a given margin around the edge.

Rect	getAbsoluteRect() const
	Helper function for obtaining the rectangle this Drawable covers, expressed in absolute coordinates.

virtual Drawable *	getFirstChild()
	Function for obtaining the first child of this drawable if any.

int16_t	getHeight() const
	Gets the height of this Drawable.

virtual void	getLastChild(int16_t x, int16_t y, Drawable ** last) =0
	Function for obtaining the the last child of this drawable that intersects with the specified point.

Drawable *	getNextSibling()
	Gets the next sibling node.

Drawable *	getParent() const
	Returns the parent node.

const Rect &	getRect() const
	Gets the rectangle this Drawable covers, in coordinates relative to its parent.

virtual Rect	getSolidRect() const =0
	Get (the largest possible) rectangle that is guaranteed to be solid (opaque).

virtual Rect	getSolidRectAbsolute()
	Helper function for obtaining the largest solid rect (as implemented by getSolidRect()) expressed in absolute coordinates.

virtual void	getVisibleRect(Rect & rect) const
	Function for finding the visible part of this drawable.

int16_t	getWidth() const
	Gets the width of this Drawable.

int16_t	getX() const
	Gets the x coordinate of this Drawable, relative to its parent.

int16_t	getY() const
	Gets the y coordinate of this Drawable, relative to its parent.

virtual void	handleDragEvent(const DragEvent & event)
	Defines the event handler interface for DragEvents.

virtual void	handleGestureEvent(const GestureEvent & event)
	Defines the event handler interface for GestureEvents.

virtual void	handleTickEvent()
	Called periodically by the framework if the Drawable instance has subscribed to timer ticks.

virtual void	invalidate() const
	Tell the framework that this entire Drawable needs to be redrawn.

virtual void	invalidateRect(Rect & invalidatedArea) const
	Request that a region of this drawable is redrawn.

bool	isTouchable() const
	Gets whether this Drawable receives touch events or not.

bool	isVisible() const
	Gets whether this Drawable is visible.

virtual void	moveRelative(int16_t x, int16_t y)
	Moves the drawable.

virtual void	moveTo(int16_t x, int16_t y)
	Moves the drawable.

virtual void	setHeight(int16_t height)
	Sets the height of this drawable.

void	setPosition(const Drawable & drawable)
	Sets the position of the Drawable to the same as the given Drawable.

void	setPosition(int16_t x, int16_t y, int16_t width, int16_t height)
	Sets the size and position of this Drawable, relative to its parent.

void	setTouchable(bool touch)
	Controls whether this Drawable receives touch events or not.

void	setVisible(bool vis)
	Controls whether this Drawable should be visible.

virtual void	setWidth(int16_t width)
	Sets the width of this drawable.

void	setWidthHeight(const Bitmap & bitmap)
	Sets the dimensions (width and height) of the Drawable without changing the x and y coordinates).

void	setWidthHeight(const Drawable & drawable)
	Sets the dimensions (width and height) of the Drawable without changing the x and y coordinates).

void	setWidthHeight(const Rect & rect)
	Sets the dimensions (width and height) of the Drawable without changing the x and y coordinates).

void	setWidthHeight(int16_t width, int16_t height)
	Sets the dimensions (width and height) of the Drawable without changing the x and y coordinates).

virtual void	setX(int16_t x)
	Sets the x coordinate of this Drawable, relative to its parent.

void	setXY(const Drawable & drawable)
	Sets the x and y coordinates of this Drawable.

void	setXY(int16_t x, int16_t y)
	Sets the x and y coordinates of this Drawable, relative to its parent.

virtual void	setY(int16_t y)
	Sets the y coordinate of this Drawable, relative to its parent.

virtual void	translateRectToAbsolute(Rect & r) const
	Helper function for converting a region of this Drawable to absolute coordinates.

virtual	~Drawable()
	Finalizes an instance of the Drawable class.

Protected Attributes inherited from Drawable


Drawable *	nextSibling
	Pointer to the next Drawable.

Drawable *	parent
	Pointer to this drawable's parent.

Rect	rect
	The coordinates of this Drawable, relative to its parent.

bool	touchable
	True if this drawable should receive touch events.

bool	visible
	True if this drawable should be drawn.

Public Functions Documentation

forceState

Allows the button to be forced into either the pressed state, or the normal state.

In the pressed state, the button will always be shown as pressed down (and shown as released when the user presses it). In the normal state, the button will be show as released or pressed depending on its actual state.

Parameters:


activeState	If true, swap the images for released and pressed. If false display the button normally.

getToggleCanceled


bool getToggleCanceled	(			)

Gets toggle canceled.

Returns:

True if it succeeds, false if it fails.

handleClickEvent

Defines the event handler interface for ClickEvents.

The default implementation ignores the event. The event is only received if the Drawable is touchable and visible.

Parameters:


event	The ClickEvent received from the HAL.

Reimplements: touchgfx::Drawable::handleClickEvent

setToggleCanceled

Sets toggle canceled.

Parameters:


isToggleCanceled	True if is toggle canceled, false if not.