Class Canvas

java.lang.Object

javaforce.webui.Component

javaforce.webui.Container

javaforce.webui.Canvas

public class Canvas
extends Container

Nested Class Summary

Nested classes/interfaces inherited from class Component

Component.Event

Modifier and Type	Class	Description
static class	Component.Event

Field Summary

Fields inherited from class Component

ArrayType, attrs, AUTO, backclr, borderclr, BOTTOM, CENTER, classes, client, clr, COLUMN, DRAG_EW, DRAG_MOVE, DRAG_NESW, DRAG_NS, DRAG_NWSE, events, height, HIDDEN, HORIZONTAL, id, LEFT, NONE, parent, RIGHT, ROW, SCROLL, styles, TOP, VERTICAL, VISIBLE, width, x, y

Modifier and Type	Field	Description
static final Component[]	ArrayType
HashMap<String,String>	attrs
static final int	AUTO
int	backclr
int	borderclr
static final int	BOTTOM
static final int	CENTER
ArrayList<String>	classes
WebUIClient	client
int	clr
static final int	COLUMN
static final int	DRAG_EW
static final int	DRAG_MOVE
static final int	DRAG_NESW
static final int	DRAG_NS
static final int	DRAG_NWSE
ArrayList<javaforce.webui.Component.OnEvent>	events
int	height
static final int	HIDDEN
static final int	HORIZONTAL
String	id
static final int	LEFT
static final int	NONE
Container	parent
static final int	RIGHT
static final int	ROW
static final int	SCROLL
HashMap<String,String>	styles
static final int	TOP
static final int	VERTICAL
static final int	VISIBLE
int	width
int	x
int	y

Constructor Summary

Constructors

Constructor	Description
Canvas()

Method Summary

Modifier and Type	Method	Description
void	drawImage(JFImage image, Point at)	Draw an image on canvas.
void	drawRect(int clr, Rectangle rect)	Draw a rectangle on canvas.
void	enableDrawRect()	Enables user drawn rectangle on canvas.
Rectangle	getRect()	Returns coordinates of last user drawn rectangle.
String	html()	Returns HTML to render component.
void	initWebGL()	Tells the client to start WebGL on canvas.
void	onDrawRect(Rectangle rect)

Methods inherited from class Container

add, add, count, events, get, get, getAll, getComponent, init, remove, remove, removeAll, set, setClient, setFlexDirection

Modifier and Type	Method	Description
void	add(int idx, Component comp)	Add component at index.
void	add(Component comp)	Add component to end of components.
int	count()
void	events()	Perform any post loading events.
Component	get(int idx)
Component	get(String id)	Get Component by id.
Component[]	getAll()
Component	getComponent(String name)	Deprecated.
void	init()	Perform any initialization with the client.
void	remove(int idx)
void	remove(Component comp)
void	removeAll()
void	set(int idx, Component c)
void	setClient(WebUIClient client)	Provides the client (connection to web browser side) and init other variables.
void	setFlexDirection(int dir)

Methods inherited from class Component

action, addActionListener, addAttr, addChangedListener, addClass, addClickListener, addEvent, addKeyDownListener, addKeyDownListenerPreventDefault, addKeyUpListener, addKeyUpListenerPreventDefault, addLoadedListener, addMouseDownListener, addMouseEnterListener, addMouseMoveListener, addMouseUpListener, addMovedListener, addResizedListener, addValidateListener, addVisibleListener, click, decode, dispatchEvent, enableDragging, encode, getAttrs, getBackColor, getBorderColor, getClient, getColor, getEvents, getHeight, getID, getName, getParent, getProperty, getStyle, getTopParent, gettransform, gettransformorigin, getWidth, getX, getY, hasAttr, hasClass, hasSize, hasStyle, initInvisible, isLoaded, isPopup, isVisible, onChanged, onClick, onDrawRect, onEvent, onKeyDown, onKeyUp, onLoaded, onMouseDown, onMouseEnter, onMouseMove, onMouseUp, onPos, onPosSize, onSize, removeAttr, removeClass, removeStyle, requestPos, requestPosSize, requestSize, sendData, sendEvent, sendOnResize, setAlign, setAutoHeight, setAutoWidth, setBackColor, setBorder, setBorderColor, setBorderGray, setClass, setColor, setDisabled, setFlex, setFocus, setFocusable, setFontSize, setHeight, setMaxHeight, setMaxWidth, setName, setPadding, setPosition, setProperty, setReadonly, setrotate, setscale, setSize, setStyle, settransform, settransformorigin, settransformorigin, settranslate, setVerticalAlign, setVisible, setWidth, toString, validate

Modifier and Type	Method	Description
void	action()
void	addActionListener(Action handler)
void	addAttr(String attr, String value)
void	addChangedListener(Changed handler)
void	addClass(String cls)
void	addClickListener(Click handler)
void	addEvent(String onX, String js)
void	addKeyDownListener(KeyDown handler)
void	addKeyDownListenerPreventDefault(KeyDown handler)
void	addKeyUpListener(KeyUp handler)
void	addKeyUpListenerPreventDefault(KeyUp handler)
void	addLoadedListener(Loaded handler)
void	addMouseDownListener(MouseDown handler)
void	addMouseEnterListener(MouseEnter handler)
void	addMouseMoveListener(MouseMove handler)
void	addMouseUpListener(MouseUp handler)
void	addMovedListener(Moved handler)
void	addResizedListener(Resized handler)
void	addValidateListener(Validate handler)
void	addVisibleListener(Visible handler)
void	click()
String	decode(String url)
void	dispatchEvent(String event, String[] args)	Dispatches event.
void	enableDragging(int drag_type, int x1, int y1, int x2, int y2)	Enables dragging a component.
String	encode(String str)
String	getAttrs()	Returns all attributes defined for a component (id, attrs, class, styles)
int	getBackColor()
int	getBorderColor()
WebUIClient	getClient()	Returns client (waits until Component is presented to user).
int	getColor()
String	getEvents()
int	getHeight()
String	getID()	Gets Component's ID.
String	getName()	Gets Component's name.
Container	getParent()	Returns Component's parent Container.
Object	getProperty(String key)	Get user define property.
String	getStyle(String style)
Container	getTopParent()	Returns Component's top-most parent Container.
String	gettransform()
String	gettransformorigin()
int	getWidth()
int	getX()
int	getY()
boolean	hasAttr(String attr)
boolean	hasClass(String cls)
boolean	hasSize()
boolean	hasStyle(String style)
protected void	initInvisible()	Sets component to initial invisible.
boolean	isLoaded()
boolean	isPopup()
boolean	isVisible()
protected void	onChanged(String[] args)
protected void	onClick(String[] args, MouseEvent me)
void	onDrawRect(String[] args)
void	onEvent(String event, String[] args)	Process custom events.
protected void	onKeyDown(String[] args, KeyEvent ke)
protected void	onKeyUp(String[] args, KeyEvent ke)
protected void	onLoaded(String[] args)
protected void	onMouseDown(String[] args, MouseEvent me)
protected void	onMouseEnter(String[] args, MouseEvent me)
protected void	onMouseMove(String[] args, MouseEvent me)
protected void	onMouseUp(String[] args, MouseEvent me)
void	onPos(String[] args)
void	onPosSize(String[] args)
void	onSize(String[] args)
void	removeAttr(String attr)
void	removeClass(String cls)
void	removeStyle(String style)
void	requestPos()
void	requestPosSize()
void	requestSize()
void	sendData(byte[] data)	Invokes getClient().sendData()
boolean	sendEvent(String msg, String[] args)	Invokes getClient().sendEvent()
void	sendOnResize()	Triggers onresize event on client side.
void	setAlign(int align)
void	setAutoHeight()
void	setAutoWidth()
void	setBackColor(int clr)
void	setBorder(boolean state)
void	setBorderColor(int clr)
void	setBorderGray(boolean state)
void	setClass(String cls)
void	setColor(int clr)
void	setDisabled(boolean state)
void	setFlex(boolean state)
void	setFocus()
void	setFocusable()
void	setFontSize(int size)
void	setHeight(int height)
void	setMaxHeight()
void	setMaxWidth()
void	setName(String name)	Sets Component's name.
void	setPadding(int px)
void	setPosition(int x, int y)
void	setProperty(String key, Object value)	Set user define property.
void	setReadonly(boolean state)
void	setrotate(float deg)
void	setscale(float x, float y)
void	setSize(int width, int height)
void	setStyle(String style, String value)
void	settransform(String transform)
void	settransformorigin(float x, float y)
void	settransformorigin(String origin)
void	settranslate(float x, float y)
void	setVerticalAlign(int align)
void	setVisible(boolean state)
void	setWidth(int width)
String	toString()
boolean	validate()

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

Canvas

public Canvas()

Method Details

html

public String html()

Description copied from class: Component

Returns HTML to render component.

Overrides:

html in class Container

initWebGL

public void initWebGL()

Tells the client to start WebGL on canvas.

enableDrawRect

public void enableDrawRect()

Enables user drawn rectangle on canvas. Use addChangedListener() to get notification.

getRect

public Rectangle getRect()

Returns coordinates of last user drawn rectangle.

drawRect

public void drawRect(int clr,
 Rectangle rect)

Draw a rectangle on canvas.

drawImage

public void drawImage(JFImage image,
 Point at)

Draw an image on canvas.

onDrawRect

public void onDrawRect(Rectangle rect)

Overrides:

onDrawRect in class Component