Canvas

出自OpenFace

目录 1 canvas 1.1 Attributes 1.2 Attributes inherited from Node 1.3 Attributes inherited from View 1.4 constructor() 1.5 getDataSet() 1.6 Methods inherited from LzNode 1.7 Methods inherited from LzView 1.8 Events 1.9 Events inherited from LzNode 1.10 Events inherited from LzView

canvas

The top-most view in a Laszlo application. JavaScript: LzCanvas

Extends View The canvas is the container for all views within an application.

The LzCanvas class represents the viewable area of the application. There is one instance of LzCanvas, named canvas. The canvas contains all views within an application.

The <canvas> tag is the document root of an LZX application file. It contains class, resource, library includes, and view and other instances.

See the Guide for a complete discussion of the <canvas> tag.

Attributes

Name 　　　Usage 　　　Type(Tag) 　　Type (JS) 　Default　 Category

accessible 　Tag & JS　 boolean　 　　Boolean 　　false

　　　　　　　setterSpecifies if this application is intended to be accessible

---

Attributes inherited from Node

id, name, parent, subnodes

Attributes inherited from View

align,bgcolor,clip,cloneManager,datapath,enabled,fgcolor,focusable,fontsize,frame,hassetheight,hassetwidth,height,ignorelayout,ignorex,ignorey, opacity,resource,resourceheight,resourcewidth,rotation,source,totalframes,valign,visible,width,x,y,z

---

constructor()

LzCanvas(args)

Parameters Name Type Desc args None

---

getDataSet()

Get the dataset with the specified name

Parameter name: the name of the dataset

---

Methods inherited from LzNode

getAttribute, setAttribute,applyConstraint

Methods inherited from LzView

applyData，converseToRelativeX，converseToRelativeY，dataBind，destroy()，getAbsoluteX，getAbsoluteY，getAttribute, getBounds, getBGColor，getColor, getFontSize，getHeight，getParent，getResource，getRotation，getSource，getTotalFrames，getVisible，getWidth，getX，getY，getWidth，hasSetFGColor，hasSetFontSize，instantiateDone，isEnabled，isFocusable，sendBehind, sendInFrontOf, sendToBack,setAlign, setAttributeRelative, setBGColor, setColor, setDatapath，setHeight, setOpacity, setResource, setResourceNumber, setRotation, setSource, setValign, setVisible, setWidth, setX, setY, stretchResource

---

Events

Name 　　　　　　　　　　　　　　　　　　　　Description

oninit　　　　　　　　　　　　　　　　　　　 None

Events inherited from LzNode

onconstruct, ondata, oninit

Events inherited from LzView

onenabled，onerror, onfocus, onwidth, onheight, onopacity, onvisible, onwidth, onx, ony, onpathready, oncloneend, onclonenumber