Inheritance diagram for com.google.appinventor.components.runtime.Ball:

Public Member Functions
	Ball (ComponentContainer container)

int	Height ()

void	Height (int height)

void	HeightPercent (int pCent)

int	Width ()

void	Width (int width)

void	WidthPercent (int pCent)

boolean	containsPoint (double qx, double qy)

void	Radius (int radius)

int	Radius ()

int	PaintColor ()

void	PaintColor (int argb)

void	OriginAtCenter (boolean b)

double	X ()

double	Y ()

void	MoveTo (double x, double y)

Public Member Functions inherited from com.google.appinventor.components.runtime.Sprite
void	Initialize ()

boolean	Enabled ()

void	Enabled (boolean enabled)

double	Heading ()

void	Heading (double userHeading)

int	Interval ()

void	Interval (int interval)

void	Speed (float speed)

float	Speed ()

boolean	Visible ()

void	Visible (boolean visible)

void	X (double x)

void	Y (double y)

void	Z (double layer)

double	Z ()

void	CollidedWith (Sprite other)

void	Dragged (float startX, float startY, float prevX, float prevY, float currentX, float currentY)

void	EdgeReached (int edge)

void	NoLongerCollidingWith (Sprite other)

void	Touched (float x, float y)

void	Flung (float x, float y, float speed, float heading, float xvel, float yvel)

void	TouchUp (float x, float y)

void	TouchDown (float x, float y)

void	Bounce (int edge)

boolean	CollidingWith (Sprite other)

void	MoveIntoBounds ()

void	PointTowards (Sprite target)

void	PointInDirection (double x, double y)

BoundingBox	getBoundingBox (int border)

boolean	intersectsWith (BoundingBox rect)

void	alarm ()

HandlesEventDispatching	getDispatchDelegate ()

void	onDestroy ()

void	onDelete ()

Protected Member Functions
void	onDraw (Canvas canvas)

Protected Member Functions inherited from com.google.appinventor.components.runtime.Sprite
	Sprite (ComponentContainer container, Handler handler)

	Sprite (ComponentContainer container)

void	postEvent (final Sprite sprite, final String eventName, final Object... args)

void	registerChange ()

int	hitEdge ()

final void	moveIntoBounds (int canvasWidth, int canvasHeight)

void	updateCoordinates ()

int	hitEdge (int canvasWidth, int canvasHeight)

abstract void	onDraw (android.graphics.Canvas canvas)

Protected Member Functions inherited from com.google.appinventor.components.runtime.VisibleComponent
	VisibleComponent ()

Additional Inherited Members
Static Public Member Functions inherited from com.google.appinventor.components.runtime.Sprite
static boolean	colliding (Sprite sprite1, Sprite sprite2)

Static Public Attributes inherited from com.google.appinventor.components.runtime.Component
static final String	ASSET_DIRECTORY = "component"

static final int	ALIGNMENT_NORMAL = 0

static final int	ALIGNMENT_CENTER = 1

static final int	ALIGNMENT_OPPOSITE = 2

static final int	ACCELEROMETER_SENSITIVITY_WEAK = 1

static final int	ACCELEROMETER_SENSITIVITY_MODERATE = 2

static final int	ACCELEROMETER_SENSITIVITY_STRONG = 3

static final int	BUTTON_SHAPE_DEFAULT = 0

static final int	BUTTON_SHAPE_ROUNDED = 1

static final int	BUTTON_SHAPE_RECT = 2

static final int	BUTTON_SHAPE_OVAL = 3

static final int	COLOR_NONE = 0x00FFFFFF

static final int	COLOR_BLACK = 0xFF000000

static final int	COLOR_BLUE = 0xFF0000FF

static final int	COLOR_CYAN = 0xFF00FFFF

static final int	COLOR_DKGRAY = 0xFF444444

static final int	COLOR_GRAY = 0xFF888888

static final int	COLOR_GREEN = 0xFF00FF00

static final int	COLOR_LTGRAY = 0xFFCCCCCC

static final int	COLOR_MAGENTA = 0xFFFF00FF

static final int	COLOR_ORANGE = 0xFFFFC800

static final int	COLOR_PINK = 0xFFFFAFAF

static final int	COLOR_RED = 0xFFFF0000

static final int	COLOR_WHITE = 0xFFFFFFFF

static final int	COLOR_YELLOW = 0xFFFFFF00

static final int	COLOR_DEFAULT = 0x00000000

static final String	DEFAULT_VALUE_COLOR_NONE = "&H00FFFFFF"

static final String	DEFAULT_VALUE_COLOR_BLACK = "&HFF000000"

static final String	DEFAULT_VALUE_COLOR_BLUE = "&HFF0000FF"

static final String	DEFAULT_VALUE_COLOR_CYAN = "&HFF00FFFF"

static final String	DEFAULT_VALUE_COLOR_DKGRAY = "&HFF444444"

static final String	DEFAULT_VALUE_COLOR_GRAY = "&HFF888888"

static final String	DEFAULT_VALUE_COLOR_GREEN = "&HFF00FF00"

static final String	DEFAULT_VALUE_COLOR_LTGRAY = "&HFFCCCCCC"

static final String	DEFAULT_VALUE_COLOR_MAGENTA = "&HFFFF00FF"

static final String	DEFAULT_VALUE_COLOR_ORANGE = "&HFFFFC800"

static final String	DEFAULT_VALUE_COLOR_PINK = "&HFFFFAFAF"

static final String	DEFAULT_VALUE_COLOR_RED = "&HFFFF0000"

static final String	DEFAULT_VALUE_COLOR_WHITE = "&HFFFFFFFF"

static final String	DEFAULT_VALUE_COLOR_YELLOW = "&HFFFFFF00"

static final String	DEFAULT_VALUE_COLOR_DEFAULT = "&H00000000"

static final float	FONT_DEFAULT_SIZE = 14

static final int	LAYOUT_ORIENTATION_HORIZONTAL = ComponentConstants.LAYOUT_ORIENTATION_HORIZONTAL

static final int	LAYOUT_ORIENTATION_VERTICAL = ComponentConstants.LAYOUT_ORIENTATION_VERTICAL

static final int	SCALING_SCALE_PROPORTIONALLY = 0

static final int	SCALING_SCALE_TO_FIT = 1

static final int	TYPEFACE_DEFAULT = 0

static final int	TYPEFACE_SANSSERIF = 1

static final int	TYPEFACE_SERIF = 2

static final int	TYPEFACE_MONOSPACE = 3

static final int	LENGTH_PREFERRED = -1

static final int	LENGTH_FILL_PARENT = -2

static final int	LENGTH_UNKNOWN = -3

static final int	LENGTH_PERCENT_TAG = -1000

static final int	TOAST_LENGTH_SHORT = 0

static final int	TOAST_LENGTH_LONG = 1

static final int	DIRECTION_NORTH = 1

static final int	DIRECTION_NORTHEAST = 2

static final int	DIRECTION_EAST = 3

static final int	DIRECTION_SOUTHEAST = 4

static final int	DIRECTION_SOUTH = -1

static final int	DIRECTION_SOUTHWEST = -2

static final int	DIRECTION_WEST = -3

static final int	DIRECTION_NORTHWEST = -4

static final int	DIRECTION_NONE = 0

static final int	DIRECTION_MIN = -4

static final int	DIRECTION_MAX = 4

static float	SLIDER_MIN_VALUE = 10

static float	SLIDER_MAX_VALUE = 50

static float	SLIDER_THUMB_VALUE = (SLIDER_MIN_VALUE + SLIDER_MAX_VALUE) / 2.0f

static final String	DEFAULT_VALUE_TEXT_TO_SPEECH_COUNTRY = ""

static final String	DEFAULT_VALUE_TEXT_TO_SPEECH_LANGUAGE = ""

Protected Attributes inherited from com.google.appinventor.components.runtime.Sprite
final Canvas	canvas

boolean	initialized = false

int	interval

boolean	visible = true

double	xLeft

double	yTop

double	zLayer

float	speed

boolean	originAtCenter

double	xCenter

double	yCenter

Form	form

double	userHeading

double	heading

double	headingRadians

double	headingCos

double	headingSin

Static Protected Attributes inherited from com.google.appinventor.components.runtime.Sprite
static final boolean	DEFAULT_ORIGIN_AT_CENTER = false

Detailed Description

A round 'sprite' that can be placed on a Canvas, where it can react to touches and drags, interact with other sprites (ImageSprites and other Balls) and the edge of the Canvas, and move according to its property values.

For example, to have a Ball move 4 pixels toward the top of a Canvas every 500 milliseconds (half second), you would set the Speed(float) property to 4 [pixels], the Interval(int) property to 500 [milliseconds], the Heading(double) property to 90 [degrees], and the Enabled(boolean) property to true{:.logic.block}. These and its other properties can be changed at any time.

The difference between a Ball and an ImageSprite is that the latter can get its appearance from an image file, while a Ball's appearance can only be changed by varying its PaintColor(int) and Radius(int) properties.

Definition at line 57 of file Ball.java.

Constructor & Destructor Documentation

◆ Ball()

com.google.appinventor.components.runtime.Ball.Ball ( ComponentContainer container )

Definition at line 63 of file Ball.java.

Member Function Documentation

◆ containsPoint()

boolean com.google.appinventor.components.runtime.Ball.containsPoint	(	double	qx,
		double	qy
	)

Indicates whether the specified point is contained by this sprite. Subclasses of Sprite that are not rectangular should override this method.

Parameters

qx	the x-coordinate
qy	the y-coordinate

Returns: whether (qx, qy) falls within this sprite

Reimplemented from com.google.appinventor.components.runtime.Sprite.

Definition at line 119 of file Ball.java.

◆ Height() [1/2]

int com.google.appinventor.components.runtime.Ball.Height ( )

Height property getter method.

Returns: height property used by the layout

Reimplemented from com.google.appinventor.components.runtime.VisibleComponent.

Definition at line 89 of file Ball.java.

◆ Height() [2/2]

void com.google.appinventor.components.runtime.Ball.Height ( int height )

Height property setter method.

Parameters

height height property used by the layout

Reimplemented from com.google.appinventor.components.runtime.VisibleComponent.

Definition at line 94 of file Ball.java.

◆ HeightPercent()

void com.google.appinventor.components.runtime.Ball.HeightPercent ( int hPercent )

Height property setter method.

This version takes a percentage of the parent component's height as its input.

Parameters

hPercent width as a percent of the height of its parent

Reimplemented from com.google.appinventor.components.runtime.VisibleComponent.

Definition at line 99 of file Ball.java.

◆ MoveTo()

void com.google.appinventor.components.runtime.Ball.MoveTo	(	double	x,
		double	y
	)

Sets the x and y coordinates of the Ball. If OriginAtCenter(boolean) is true, the center of the Ball will be placed here. Otherwise, the top left edge of the Ball will be placed at the specified coordinates.

Parameters

x	the x-coordinate
y	the y-coordinate

Reimplemented from com.google.appinventor.components.runtime.Sprite.

Definition at line 237 of file Ball.java.

◆ onDraw()

void com.google.appinventor.components.runtime.Ball.onDraw ( Canvas canvas )

protected

Definition at line 75 of file Ball.java.

◆ OriginAtCenter()

void com.google.appinventor.components.runtime.Ball.OriginAtCenter ( boolean b )

Whether the x- and y-coordinates should represent the center of the Ball (true{:.logic.block}) or its left and top edges (false{:.logic.block}).

Reimplemented from com.google.appinventor.components.runtime.Sprite.

Definition at line 193 of file Ball.java.

◆ PaintColor() [1/2]

int com.google.appinventor.components.runtime.Ball.PaintColor ( )

The color of the Ball.

Returns: paint RGB color with alpha

Definition at line 158 of file Ball.java.

◆ PaintColor() [2/2]

void com.google.appinventor.components.runtime.Ball.PaintColor ( int argb )

PaintColor property setter method.

@suppressdoc

Parameters

argb	paint RGB color with alpha

Definition at line 171 of file Ball.java.

◆ Radius() [1/2]

int com.google.appinventor.components.runtime.Ball.Radius ( )

The distance from the center of the Ball to its edge.

Definition at line 145 of file Ball.java.

◆ Radius() [2/2]

void com.google.appinventor.components.runtime.Ball.Radius ( int radius )

Definition at line 130 of file Ball.java.

◆ Width() [1/2]

int com.google.appinventor.components.runtime.Ball.Width ( )

Width property getter method.

Returns: width property used by the layout

Reimplemented from com.google.appinventor.components.runtime.VisibleComponent.

Definition at line 104 of file Ball.java.

◆ Width() [2/2]

void com.google.appinventor.components.runtime.Ball.Width ( int width )

Width property setter method.

Parameters

width width property used by the layout

Reimplemented from com.google.appinventor.components.runtime.VisibleComponent.

Definition at line 109 of file Ball.java.

◆ WidthPercent()

void com.google.appinventor.components.runtime.Ball.WidthPercent ( int wPercent )

Width property setter method.

This version takes a percentage of the parent component's width as its input.

Parameters

wPercent width as a percent of its parent

Reimplemented from com.google.appinventor.components.runtime.VisibleComponent.

Definition at line 114 of file Ball.java.

◆ X()

double com.google.appinventor.components.runtime.Ball.X ( )

The horizontal coordinate of the Ball, increasing as the Ball moves right. If the property OriginAtCenter(boolean) is true, the coordinate is for the center of the Ball; otherwise, it is for the leftmost point of the Ball.

Reimplemented from com.google.appinventor.components.runtime.Sprite.

Definition at line 207 of file Ball.java.

◆ Y()

double com.google.appinventor.components.runtime.Ball.Y ( )

The vertical coordinate of the Ball, increasing as the Ball moves down. If the property OriginAtCenter(boolean) is true, the coordinate is for the center of the Ball otherwise, it is for the uppermost point of the Ball.

Reimplemented from com.google.appinventor.components.runtime.Sprite.

Definition at line 221 of file Ball.java.

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

C:/Users/Ulli/appinventor-sources/appinventor/components/src/com/google/appinventor/components/runtime/Ball.java

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ Ball()

Member Function Documentation

◆ containsPoint()

◆ Height() [1/2]

◆ Height() [2/2]

◆ HeightPercent()

◆ MoveTo()

◆ onDraw()

◆ OriginAtCenter()

◆ PaintColor() [1/2]

◆ PaintColor() [2/2]

◆ Radius() [1/2]

◆ Radius() [2/2]

◆ Width() [1/2]

◆ Width() [2/2]

◆ WidthPercent()

◆ X()

◆ Y()