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

Field Summary

Fields inherited from class Component

ArrayType, attrs, AUTO, backclr, borderclr, BOTTOM, CENTER, classes, client, clr, DRAG_EW, DRAG_MOVE, DRAG_NESW, DRAG_NS, DRAG_NWSE, events, height, HIDDEN, HORIZONTAL, id, LEFT, name, parent, RIGHT, SCROLL, styles, TOP, VERTICAL, VISIBLE, width, x, 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

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, 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, setPosition, setProperty, setReadonly, setrotate, setscale, setSize, setStyle, settransform, settransformorigin, settransformorigin, settranslate, setVerticalAlign, setVisible, setWidth, toString, 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