CircleProgress

touchgfx/containers/progress_indicators/CircleProgress.hpp

A circle progress indicator uses CanvasWidgetRenderer for drawing the arc of a Circle to show progress. This means that the user must create a painter for painting the circle. The circle progress is defined by setting the minimum and maximum angle of the arc.

Note: As CircleProgress uses CanvasWidgetRenderer, it is important that a buffer is set up by calling CanvasWidgetRendere::setBuffer().

Inherits from: AbstractProgressIndicator, Container, Drawable

Public Functions

	CircleProgress()
virtual int	getCapPrecision() const
	Gets the cap precision.
virtual void	getCenter(int & x, int & y) const
	Gets the circle center coordinates.
virtual int	getEndAngle() const
	Gets end angle in degrees.
virtual int	getLineWidth() const
	Gets line width.
virtual int	getRadius() const
	Gets the radius of the circle.
virtual int	getStartAngle() const
	Gets start angle in degrees.
virtual void	setAlpha(uint8_t newAlpha)
	Sets the opacity (alpha value).
virtual void	setCapPrecision(int precision)
	Sets the cap precision of end of the circle arc.
virtual void	setCenter(int x, int y)
	Sets the center of the circle / arc.
virtual void	setLineWidth(int width)
	Sets line width of the circle.
virtual void	setPainter(AbstractPainter & painter)
	Sets the painter to use for drawing the circle progress.
virtual void	setProgressIndicatorPosition(int16_t x, int16_t y, int16_t width, int16_t height)
	Sets the position and dimensions of the actual progress indicator relative to the background image.
virtual void	setRadius(int r)
	Sets the radius of the circle.
virtual void	setStartEndAngle(int startAngle, int endAngle)
	Sets start angle and end angle in degrees.
virtual void	setValue(int value)
	Sets the current value in the range (min..max) set by setRange().

Protected Attributes

Circle	circle
	The circle.
int	circleEndAngle
	The end angle.

Additional inherited members

Public Functions inherited from AbstractProgressIndicator

	AbstractProgressIndicator()
	Initializes a new instance of the AbstractProgressIndicator class with a default range 0-100.
virtual uint8_t	getAlpha() const
	Gets the current alpha value of the widget.
virtual uint16_t	getProgress(uint16_t range =100) const
	Gets the current progress based on the range set by setRange() and the value set by setValue().
virtual int16_t	getProgressIndicatorHeight() const
	Gets progress indicator height.
virtual int16_t	getProgressIndicatorWidth() const
	Gets progress indicator width.
virtual int16_t	getProgressIndicatorX() const
	Gets progress indicator x coordinate.
virtual int16_t	getProgressIndicatorY() const
	Gets progress indicator y coordinate.
virtual void	getRange(int & min, int & max) const
	Gets the range set by setRange().
virtual void	getRange(int & min, int & max, uint16_t & steps) const
	Gets the range set by setRange().
virtual void	getRange(int & min, int & max, uint16_t & steps, uint16_t & minStep) const
	Gets the range set by setRange().
virtual int	getValue() const
	Gets the current value set by setValue().
virtual void	handleTickEvent()
	Called periodically by the framework if the Drawable instance has subscribed to timer ticks.
virtual void	invalidateContent() const
	Tell the framework that the contents of the Drawable needs to be redrawn.
virtual void	setBackground(const Bitmap & bitmapBackground)
	Sets the background image.
virtual void	setEasingEquation(EasingEquation easingEquation)
	Sets easing equation to be used in updateValue.
virtual void	setRange(int min, int max, uint16_t steps =0, uint16_t minStep =0)
	Sets the range for the progress indicator.
void	setValueSetAction(GenericCallback< const AbstractProgressIndicator & > & callback)
	Sets callback that will be triggered every time a new value is assigned to the progress indicator.
void	setValueUpdatedAction(GenericCallback< const AbstractProgressIndicator & > & callback)
	Sets callback that will be triggered when updateValue has finished animating to the final value.
virtual void	updateValue(int value, uint16_t duration)
	Update the current value in the range (min..max) set by setRange().

Protected Attributes inherited from AbstractProgressIndicator

int	animationDuration
	Duration of the animation.
int	animationEndValue
	The animation end value.
bool	animationRunning
	Is the animation running.
int	animationStartValue
	The animation start value.
int	animationStep
	The current animation step.
Image	background
	The background image.
int	currentValue
	The current value.
EasingEquation	equation
	The equation used in updateValue()
Container	progressIndicatorContainer
	The container that holds the actual progress indicator.
int	rangeMax
	The range maximum.
int	rangeMin
	The range minimum.
uint16_t	rangeSteps
	The range steps.
uint16_t	rangeStepsMin
	The range steps minimum.
GenericCallback< const AbstractProgressIndicator & > *	valueSetCallback
	New value assigned Callback.
GenericCallback< const AbstractProgressIndicator & > *	valueUpdatedCallback
	Animation ended Callback.

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	handleClickEvent(const ClickEvent & event)
	Defines the event handler interface for ClickEvents.
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	invalidateContent() const
	Tell the framework that the contents of the 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 & other)
	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

CircleProgress

CircleProgress	(			)

getCapPrecision

virtual int getCapPrecision	(			)	const

Gets the cap precision.

Returns:

The cap precision.

See also:

setCapPrecision

getCenter

virtual void getCenter	(	int &	x ,		const
		int &	y		const
		)	const

Gets the circle center coordinates.

Parameters:

x	The x coordinate of the center of the circle.
y	The y coordinate of the center of the circle.

getEndAngle

virtual int getEndAngle	(			)	const

Gets end angle in degrees.

Beware that the value returned is not related to the current progress of the circle but rather the end point of the circle when it is at 100%.

Returns:

The end angle.

Note

Angles are given in degrees, so a full circle is 360.

See also:

setStartEndAngle

getLineWidth

virtual int getLineWidth	(			)	const

Gets line width.

Returns:

The line width.

See also:

setLineWidth

getRadius

virtual int getRadius	(			)	const

Gets the radius of the circle.

Returns:

The radius.

getStartAngle

virtual int getStartAngle	(			)	const

Gets start angle in degrees.

Returns:

The start angle.

Note

Angles are given in degrees, so a full circle is 360.

See also:

setStartEndAngle, getEndAngle

setAlpha

virtual void setAlpha	(	uint8_t	newAlpha	)

Sets the opacity (alpha value).

This can be used to fade it away by gradually decreasing the alpha value from 255 (solid) to 0 (invisible).

Parameters:

newAlpha	The new alpha value. 255=solid, 0=invisible.

Note

The user code must call invalidate() in order to update the display.The alpha can also be set on the Painter, but this can be controlled directly from the user app, setting alpha for the CircleProgress will set the alpha of the actual circle.

See also:

getAlpha

Reimplements: touchgfx::AbstractProgressIndicator::setAlpha

setCapPrecision

virtual void setCapPrecision	(	int	precision	)

Sets the cap precision of end of the circle arc.

This is not used if line width is zero.

Parameters:

precision	The cap precision.

See also:

Circle::setCapPrecision, getCapPrecision

setCenter

virtual void setCenter	(	int	x ,
		int	y
		)

Sets the center of the circle / arc.

Parameters:

x	The x coordinate of the center of the circle.
y	The y coordinate of the center of the circle.

setLineWidth

virtual void setLineWidth	(	int	width	)

Sets line width of the circle.

If a line width of zero is specified, it has a special meaning of drawing a filled circle (with the set radius) instead of just the circle arc.

Parameters:

width	The width of the line (0 produces a filled circle with the given radius).

See also:

Circle::setLineWidth, setRadius

setPainter

virtual void setPainter	(	AbstractPainter &	painter	)

Sets the painter to use for drawing the circle progress.

Parameters:

painter	The painter.

See also:

Circle::setPainter, AbstractPainter

setProgressIndicatorPosition

virtual void setProgressIndicatorPosition	(	int16_t	x ,
		int16_t	y ,
		int16_t	width ,
		int16_t	height
		)

Sets the position and dimensions of the actual progress indicator relative to the background image.

Parameters:

x	The x coordinate.
y	The y coordinate.
width	The width of the box progress indicator.
height	The height of the box progress indicator.

See also:

getProgressIndicatorX, getProgressIndicatorY, getProgressIndicatorWidth, getProgressIndicatorHeight

Reimplements: touchgfx::AbstractProgressIndicator::setProgressIndicatorPosition

setRadius

virtual void setRadius	(	int	r	)

Sets the radius of the circle.

Parameters:

r	The radius.

See also:

Circle::setRadius

setStartEndAngle

virtual void setStartEndAngle	(	int	startAngle ,
		int	endAngle
		)

Sets start angle and end angle in degrees.

By swapping end and start angles, circles can progress backwards.

Parameters:

startAngle	The start angle.
endAngle	The end angle.

Note

Angles are given in degrees, so a full circle is 360.

setValue

virtual void setValue	(	int	value	)

Sets the current value in the range (min..max) set by setRange().

Values lower than min are mapped to min, values higher than max are mapped to max. If a callback function has been set using setValueSetAction, that callback will be called (unless the new value is the same as the current value).

Parameters:

value	The value.

Note

if value is equal to the current value, nothing happens, and the callback will not be called.

See also:

getValue, updateValue, setValueSetAction

Reimplements: touchgfx::AbstractProgressIndicator::setValue

Protected Attributes Documentation

circle

Circle circle

The circle.

circleEndAngle

int circleEndAngle

The end angle.