Canvas implementation of the Graphic class.
CanvasGraphic is not intended to be used directly. Instead, use the Graphic class.
If the browser lacks SVG capabilities but has
Canvas capabilities, the Graphic
class will point to the CanvasGraphic class.
_appendShapeshape
Adds a shape instance to the graphic instance.
shape
Shape
The shape instance to be added to the graphic.
_calculateTranslateposition
contentSize
boundsSize
Determines the value for either an x or y value to be used for the translate of the Graphic.
Number
_getDocFragReturns a document fragment to for attaching shapes.
DocumentFragment
_getShapeClassval
Returns a shape class. Used by addShape.
Function
_getUpdatedContentBoundsRecalculates and returns the contentBounds for the Graphic instance.
_redrawRedraws all shapes.
_toBackShape
Inserts shape as the first child of the content node.
Shape
CanvasShape
to add.
_toFrontShape
Inserts shape on the top of the tree.
Shape
CanvasShape
to add.
addShapecfg
Generates a shape instance by type.
cfg
Object
attributes for the shape
Shape
addToRedrawQueueShape
Adds a shape to the redraw queue and calculates the contentBounds. Used internally
by Shape instances.
Shape
Object
shape The shape instance to add to the queue
batchmethod
Allows for creating multiple shapes in order to batch appending and redraw operations.
method
Function
Method to execute.
clearClears the graphics object.
destroyRemoves all nodes.
getShapeByIdid
Returns a shape based on the id of its dom node.
id
String
Dom id of the shape's node attribute.
Shape
getXYGets the current position of the graphic instance in page coordinates.
Array The XY position of the shape.
removeAllShapesRemoves all shape instances from the dom.
removeShapeshape
Removes a shape instance from from the graphic instance.
renderparentNode
Adds the graphics node to the dom.
parentNode
HTMLElement
node in which to render the graphics node into.
setname
value
Sets the value of an attribute.
_shapeClassLook up for shape classes. Used by addShape to retrieve a class for instantiation.
autoDrawIndicates whether or not the instance will automatically redraw after a change is made to a shape. This property will get set to false when batching operations.
Default: true
autoSizeDetermines the sizing of the Graphic.
width and height attributes or are determined by the dimensions of the parent element. The
content contained in the Graphic will be sized to fit with in the Graphic instance's dimensions. When using this
setting, the preserveAspectRatio attribute will determine how the contents are sized.width
and height attributes or are determined by the dimensions of the parent element. The contents of the
Graphic instance are not affected by this setting.Default: false
contentBoundsObject containing size and coordinate data for the content of a Graphic in relation to the graphic instance's position.
preserveAspectRatioDetermines how content is sized when autoSize is set to sizeContentToGraphic.
Default: xMidYMid
renderWhether or not to render the Graphic automatically after to a specified parent node after init. This can be a Node
instance or a CSS selector string.
resizeDownThe contentBounds will resize to greater values but not smaller values. (for performance) When resizing the contentBounds down is desirable, set the resizeDown value to true.