DsGaugeArc Class Reference

DsGaugeArc is a class that implements an arc style gauge. More...

#include <ds_gauge_arc.h>

Inheritance diagram for DsGaugeArc:

Public Types
enum	Style : uint32_t {   STYLE_DEFAULT = 0 ,   STYLE_BIDIRECTIONAL = (1 << 0) ,   STYLE_CURSOR_WEDGE = (1 << 1) }
	Arc gauge style. More...

Public Member Functions
	DsGaugeArc (DsView *parent, const DsPoint &pos, const DsSize &size, float track_width, float start_angle, float end_angle, uint32_t style=STYLE_DEFAULT)
	Creates a DsGaugeArc object.
DsGaugeArc &	setRangeColor (DsColor color)
	Sets the range text color.
DsGaugeArc &	setRangeFont (const ds_bitmap_font_t *font)
	Sets the font used to render the range.
DsGaugeArc &	setRangeFormat (const char *format)
	Sets the printf() style format string used to print the range value.
DsGaugeArc &	setRangeOffset (int16_t offset)
	Sets the horizontal range offset in pixels.
Public Member Functions inherited from DsView
	DsView (DsView *parent, const DsPoint &pos=DsPoint(), const DsSize &size=DsSize())
	Creates a DsView with an optional position and size.
	DsView (DsView *parent, DsOrientation layout_orientation)
	Creates a DsView with the auto-layout mode active. This view can align it's children automatically.
void	addChild (DsView *view)
	Adds a child to the current DsView.
void	removeChild (DsView *view)
	Removes a child to the current DsView.
void	removeAllChildren (void)
	Removes all children of the current DsView.
void	bringFront (void)
	Brings the current view to the top of the drawing order.
void	sendBack (void)
	Sends the current view to the bottom of the drawing order.
DsView *	getParent (void) const
	Returns the parent of the current view.
void	setParent (DsView *parent)
	Sets a new parent to the view.
const DsPoint &	getPosition (void) const
	Returns the position of the view in parent coordinates.
DsFPoint	getCenterPoint (void) const
	Returns the center point of the view in current coordinates.
DsPoint	translatePositionInParentCoordinates (const DsView *parent, DsPoint pos) const
	Translates position (x, y) in parent coordinate system.
DsPoint	translatePositionInParentCoordinates (uint32_t parent_level, DsPoint pos) const
	Translates position (x, y) in parent coordinate system.
DsPoint	getPositionInParentCoordinates (const DsView *parent) const
	Returns the position in the parent's coordinate system.
void	setPosition (const DsPoint &pos)
	Sets the position of the view in parent coordinates.
void	setCenterPosition (const DsPoint &pos)
	Sets the position of the center of the view in parent coordinates.
void	centerVertically (DsView *view)
	Aligns vertically the center of the current view with the center of another view.
void	centerHorizontally (DsView *view)
	Aligns horizontally the center of the current view with the center of another view.
const DsSize &	getParentSize (void) const
	Returns the size of the parent view.
const DsSize &	getSize (void) const
	Returns the size of the view.
void	setMinimumSize (const DsSize &size)
	Returns the minimum size of the view.
void	setSize (const DsSize &size)
	Sets the size of the view.
void	setWidth (int32_t width)
	Sets the width of the view.
void	setHeight (int32_t height)
	Sets the height of the view.
DsRect	getRegion (void) const
	Returns a rectangle describing the space occupied by the current view in it's own coordinate system (X and Y coordinates are 0).
DsRect	getRegionInParentCoordinates (const DsView *parent) const
	Returns a rectangle describing the space occupied by the current view in the parent's coordinate system.
void	alignInParent (void)
	Aligns the view relative to it's parent.
void	alignInParent (const DsAlignment &alignment, int32_t padding_top, int32_t padding_left, int32_t padding_bottom, int32_t padding_right)
	Aligns the view relative to it's parent.
DsView *	setPaddingTop (int16_t padding, uint16_t proportion=0)
	Sets the top padding used by the auto-layout.
DsView *	setPaddingBottom (int16_t padding, uint16_t proportion=0)
	Sets the bottom padding used by the auto-layout.
DsView *	setPaddingLeft (int32_t padding, uint16_t proportion=0)
	Sets the left padding used by the auto-layout.
DsView *	setPaddingRight (int16_t padding, uint16_t proportion=0)
	Sets the right padding used by the auto-layout.
DsView *	setPadding (int16_t padding, uint16_t proportion=0)
	Sets the padding used by the auto-layout.
DsView *	setPaddingHorizontal (int16_t padding, uint16_t proportion=0)
	Sets the horizontal padding used by the auto-layout.
DsView *	setPaddingVertical (int16_t padding, uint16_t proportion=0)
	Sets the vertical padding used by the auto-layout.
DsView *	setProportion (uint32_t proportion)
	Sets the view proportion used by the auto-layout.
DsAlignment	getParentAlignment (void) const
	Returns parent alignment mode of the view.
DsView *	setParentAlignment (const DsAlignment &alignment)
	Sets parent alignment mode of the view.
void	reserveSpace (bool state)
	Configures if during auto-layout the view will reserve space even if it's hidden.
void	setAutoLayout (DsOrientation orientation, bool enable)
	Enables or disables the auto-layout mode and sets the primary orientation.
virtual DsSize	fitContent (void)
	Calculates the minimum size required by the view.
void	doLayout (void)
	Runs the auto-layout algorithm.
void	setBackgroundColor (DsColor color)
	Sets the background color of the view.
void	setBackgroundImage (const DsSurface *surface)
	Sets the background image.
void	setPanelColor (DsColor color)
	Sets the color of the panel.
void	setPanelBorderColor (DsColor color)
	Sets the color of the panel border.
void	setPanelCornerRadius (uint16_t radius)
	Sets the radius of the panel corners.
void	setPanelBorderThickness (uint8_t thickness)
	Sets the thickness of the panel border.
DsScreen &	getScreen (void)
	Returns a reference to the screen to which this view belongs.
bool	isFocused (void)
	Is the view focused?
bool	getIsVisible (void) const
	Is the view visibility enabled?
bool	isVisible (void) const
	Is the view actually visible on the screen?
bool	isParentVisible (void) const
	Is the parent view actually visible on the screen?
bool	show (void)
	Shortcut to setVisible(true).
bool	hide (void)
	Shortcut to setVisible(false).
bool	setVisible (bool is_visible)
	Changes the visibility of the view.
virtual void	onShow (void)
	This virtual method is called when the view becomes visible on the screen.
virtual void	onHide (void)
	This virtual method is called when the view becomes invisible (hidden) on the screen.
void	enable (bool state)
	Enables or disables the view.
bool	isEnabled (void) const
	Is the view enabled?
void	enableTouch (bool state)
	Enables or disables processing of touch events.
bool	isTouchEnabled (void) const
	Is the view enabled to process touch events?
void	sendTap (DsPoint pos)
	Sends a tap event to the view.
void	setOnTapCallback (const lambda< void(const DsPoint &p)> &cb)
	Sets the lambda to be executed when the user taps on the view.
void	setOnLongTapCallback (const lambda< void(const DsPoint &p)> &cb)
	Sets the lambda to be executed when the user taps the view and holds for a specific time (set with setLongTapDetection()).
void	setOnTouchActiveCallback (const lambda< void(const DsPoint &p)> &cb)
	Sets the lambda to be executed when the user touches the view.
void	setOnTouchReleaseCallback (const lambda< void(void)> &cb)
	Sets the lambda to be executed when the user touch is released.
void	setLongTapDetection (uint32_t delay_ms)
	Configures the long tap detection.
bool	isInputInside (void) const
	Returns if there is user input (touch) inside the view.
const DsPoint &	getTouchPosition (void) const
	Returns the location of the user touch input inside the view.
void	enableHorizontalScroll (bool state)
	Enables or disables the horizontal scroll of the view contents.
void	enableVerticalScroll (bool state)
	Enables or disables the vertical scroll of the view contents.
void	setScrollbarColor (DsColor color)
	Configure the color of the scroll bars.
virtual void	invalidate (void)
	Invalidates the view.
virtual void	invalidateRegion (DsRect region)
	Invalidates only a region of the view.
void	addStateObserver (StateObserver *observer)
	Adds a state observer object.
void	removeStateObserver (StateObserver *observer)
	Removes a state observer object.
Public Member Functions inherited from DsGaugeBase
DsGaugeBase &	setBorderColor (DsColor color)
	Sets the border color.
DsGaugeBase &	setTrackColor (DsColor color)
	Sets the track color.
DsGaugeBase &	setActiveColor (DsColor color)
	Sets the active color.
DsGaugeBase &	setBorderThickness (uint8_t thickness)
	Sets the border thickness.
DsGaugeBase &	setValueColor (DsColor color)
	Sets the value text color.
DsGaugeBase &	setValueFont (const ds_bitmap_font_t *font)
	Sets the font used to render the value.
DsGaugeBase &	setValueFormat (const char *format)
	Sets the printf() style format string used to print the value.
DsGaugeBase &	setValueOffset (int16_t offset)
	Sets the vertical value offset in pixels.
DsGaugeBase &	setTitleColor (DsColor color)
	Sets the title color.
DsGaugeBase &	setTitleFont (const ds_bitmap_font_t *font)
	Sets the font used to render the title.
DsGaugeBase &	setTitle (const char *title)
	Sets the title.
DsGaugeBase &	setTitleOffset (int16_t offset)
	Sets the vertical title offset in pixels.
DsGaugeBase &	setUnitColor (DsColor color)
	Sets the unit color.
DsGaugeBase &	setUnitFont (const ds_bitmap_font_t *font)
	Sets the font used to render the unit.
DsGaugeBase &	setUnit (const char *unit)
	Sets the unit.
DsGaugeBase &	setUnitOffset (int16_t offset)
	Sets the vertical unit offset in pixels.
Public Member Functions inherited from DsValueBase
void	setValueRange (float min, float max)
	Sets the value range.
void	setValue (float value)
	Sets the value.
float	getValue (void) const
	Returns the value.
void	setOnChangeCallback (const lambda< void(float value, bool in_motion, bool user_input)> &cb)

Additional Inherited Members
Protected Member Functions inherited from DsView
virtual void	onChildAdd (DsView *child)
	This virtual method will be called when a new child had been added to the view.
virtual void	onPaintOver (DsRenderer &renderer)
	This virtual method will be called when the view needs to repaint it's content, but after the view and it's children had been painted.
virtual bool	onTouch (const DsTouchEvent &event)
	This virtual method will be called when there is touch user input.
virtual void	onVSync (void)
	This virtual method is be called at every vertical sync period.
virtual void	onKeyboard (int32_t key)
	This virtual method is called when there is a keyboard event that needs to be processed.
void	inputCapture (void)
	Captures the touch input.
bool	isInputCaptured (void) const
	Is the input captured?
void	skipInput (void)
	Skips receiving touch inputs until the end of the current touch event.
void	forAllChildren (const lambda< void(DsView *child)> &lambda)
	Calls the supplied lambda for every view in the children list.
void	forAllChildrenBackwards (const lambda< void(DsView *child)> &lambda)
	Calls the supplied lambda for every view in the children list.
Protected Member Functions inherited from DsValueBase
float	getNormalizedValue (float value)
void	notifyValueChange (bool in_motion)
Protected Attributes inherited from DsView
DsPoint	mScrollPosition
DsPoint	mPreviousScrollPosition
DsPoint	mScrollPositionBase
DsColor	mScrollbarColor
DsPoint	mTouchPos
uint32_t	mTouchTimestamp
Protected Attributes inherited from DsGaugeBase
DsColor	mBorderColor
DsColor	mTrackColor
DsColor	mActiveColor
DsColor	mValueColor
const ds_bitmap_font_t *	mValueFont
const char *	mValueFormat
DsRect	mValueRegion
DsColor	mTitleColor
const ds_bitmap_font_t *	mTitleFont
const char *	mTitleText
DsRect	mTitleRegion
DsColor	mUnitColor
const ds_bitmap_font_t *	mUnitFont
const char *	mUnitText
DsRect	mUnitRegion
int16_t	mValueOffset
int16_t	mTitleOffset
int16_t	mUnitOffset
uint8_t	mBorderThickness
Protected Attributes inherited from DsValueBase
float	mMinValue
float	mMaxValue
float	mValue

Detailed Description

DsGaugeArc is a class that implements an arc style gauge.

Member Enumeration Documentation

Style

enum DsGaugeArc::Style : uint32_t

Arc gauge style.

Enumerator
STYLE_DEFAULT	Default arc gauge style.
STYLE_BIDIRECTIONAL	Arc gauge is bidirectional, it can display positive and negative values.
STYLE_CURSOR_WEDGE	The cursor is visible and has a wedge shape.

Constructor & Destructor Documentation

DsGaugeArc()

DsGaugeArc::DsGaugeArc	(	DsView *	parent,
		const DsPoint &	pos,
		const DsSize &	size,
		float	track_width,
		float	start_angle,
		float	end_angle,
		uint32_t	style = STYLE_DEFAULT
	)

Creates a DsGaugeArc object.

Parameters

parent	The parent view
pos	The position of the view in the parent coordinate system
size	The size of the view
track_width	Width of the gauge arc track
start_angle	Start angle of the arc track
end_angle	End angle of the arc track
style	Gauge style

Member Function Documentation

setRangeColor()

DsGaugeArc & DsGaugeArc::setRangeColor

(

DsColor

color

)

Sets the range text color.

Parameters

color

Color

Return values

Reference

to the current object. This allows daisy-chaining calls.

setRangeFont()

DsGaugeArc & DsGaugeArc::setRangeFont

(

const ds_bitmap_font_t *

font

)

Sets the font used to render the range.

Parameters

font

Font

Return values

Reference

to the current object. This allows daisy-chaining calls.

setRangeFormat()

DsGaugeArc & DsGaugeArc::setRangeFormat

(

const char *

format

)

Sets the printf() style format string used to print the range value.

Parameters

format

printf() style format string. Only one float value is passed to the printf() formatting function.

Return values

Reference

to the current object. This allows daisy-chaining calls.

setRangeOffset()

DsGaugeArc & DsGaugeArc::setRangeOffset

(

int16_t

offset

)

Sets the horizontal range offset in pixels.

Parameters

offset

Offset in pixels (positive will move the range text towards the inside of the gauge)

Return values

Reference

to the current object. This allows daisy-chaining calls.

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

• inc/ds_gauge_arc.h