Class HTMLCanvasElement

java.lang.Object

org.htmlunit.corejs.javascript.ScriptableObject

org.htmlunit.javascript.HtmlUnitScriptable

org.htmlunit.javascript.host.event.EventTarget

org.htmlunit.javascript.host.dom.Node

org.htmlunit.javascript.host.Element

org.htmlunit.javascript.host.html.HTMLElement

org.htmlunit.javascript.host.html.HTMLCanvasElement

All Implemented Interfaces:

Serializable, Cloneable, org.htmlunit.corejs.javascript.ConstProperties, org.htmlunit.corejs.javascript.debug.DebuggableObject, org.htmlunit.corejs.javascript.Scriptable, org.htmlunit.corejs.javascript.SymbolScriptable

public class HTMLCanvasElement
extends HTMLElement

The JavaScript object HTMLCanvasElement.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class HTMLElement

HTMLElement.ProxyDomNode

Nested classes/interfaces inherited from class org.htmlunit.corejs.javascript.ScriptableObject

org.htmlunit.corejs.javascript.ScriptableObject.KeyComparator

Field Summary

Fields

Modifier and Type	Field	Description
private CanvasRenderingContext2D	context2d_

Fields inherited from class Node

ATTRIBUTE_NODE, CDATA_SECTION_NODE, COMMENT_NODE, DOCUMENT_FRAGMENT_NODE, DOCUMENT_NODE, DOCUMENT_POSITION_CONTAINED_BY, DOCUMENT_POSITION_CONTAINS, DOCUMENT_POSITION_DISCONNECTED, DOCUMENT_POSITION_FOLLOWING, DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC, DOCUMENT_POSITION_PRECEDING, DOCUMENT_TYPE_NODE, ELEMENT_NODE, ENTITY_NODE, ENTITY_REFERENCE_NODE, NOTATION_NODE, PROCESSING_INSTRUCTION_NODE, TEXT_NODE

Fields inherited from class org.htmlunit.corejs.javascript.ScriptableObject

CONST, DONTENUM, EMPTY, PERMANENT, READONLY, UNINITIALIZED_CONST

Fields inherited from interface org.htmlunit.corejs.javascript.Scriptable

NOT_FOUND

Constructor Summary

Constructors

Constructor	Description
HTMLCanvasElement()	Creates an instance.

Method Summary

Modifier and Type	Method	Description
Object	getContext(String contextId)	Gets the context.
int	getHeight()	Returns the height property.
(package private) static Integer	getValue(String value)
int	getWidth()	Returns the width property.
void	jsConstructor()	JavaScript constructor.
void	setHeight(int height)	Sets the height property.
void	setWidth(int width)	Sets the width property.
String	toDataURL(Object type)	Get the data: URL representation of the Canvas element.

Methods inherited from class HTMLElement

blur, click, focus, getAccessKey, getAlign, getAttributeNode, getAutofocus, getBoundingClientRect, getCh, getChOff, getContentEditable, getDataset, getDir, getDomNodeOrDie, getDomNodeOrNull, getEnterKeyHint, getForm, getInnerText, getLang, getLocalName, getName, getNodeName, getOffsetHeight, getOffsetLeft, getOffsetParent_js, getOffsetTop, getOffsetWidth, getOnabort, getOnanimationcancel, getOnanimationend, getOnanimationiteration, getOnanimationstart, getOnauxclick, getOnblur, getOncancel, getOncanplay, getOncanplaythrough, getOnchange, getOnclick, getOnclose, getOncontextmenu, getOncopy, getOncuechange, getOncut, getOndblclick, getOndrag, getOndragend, getOndragenter, getOndragleave, getOndragover, getOndragstart, getOndrop, getOndurationchange, getOnemptied, getOnended, getOnerror, getOnfocus, getOngotpointercapture, getOninput, getOninvalid, getOnkeydown, getOnkeypress, getOnkeyup, getOnload, getOnloadeddata, getOnloadedmetadata, getOnloadstart, getOnlostpointercapture, getOnmousedown, getOnmouseenter, getOnmouseleave, getOnmousemove, getOnmouseout, getOnmouseover, getOnmouseup, getOnmousewheel, getOnmozfullscreenchange, getOnmozfullscreenerror, getOnpaste, getOnpause, getOnplay, getOnplaying, getOnpointercancel, getOnpointerdown, getOnpointerenter, getOnpointerleave, getOnpointermove, getOnpointerout, getOnpointerover, getOnpointerup, getOnprogress, getOnratechange, getOnreset, getOnresize, getOnscroll, getOnscrollend, getOnseeked, getOnseeking, getOnselect, getOnselectionchange, getOnselectstart, getOnstalled, getOnsubmit, getOnsuspend, getOntimeupdate, getOntoggle, getOntransitioncancel, getOntransitionend, getOntransitionrun, getOntransitionstart, getOnvolumechange, getOnwaiting, getOnwheel, getOuterText, getParentHTMLElement, getPosX, getPosY, getPrefix, getStyle, getTabIndex, getTitle, getVAlign, getValue, getWidthOrHeight, isAncestorOfEventTarget, isDisabled, isEndTagForbidden, isHidden, isIsContentEditable, isLowerCaseInOuterHtml, isSpellcheck, setAccessKey, setAlign, setAttribute, setAutofocus, setCh, setChOff, setColorAttribute, setContentEditable, setDir, setDisabled, setDomNode, setEnterKeyHint, setHidden, setInnerText, setLang, setName, setOnabort, setOnanimationcancel, setOnanimationend, setOnanimationiteration, setOnanimationstart, setOnauxclick, setOnblur, setOncancel, setOncanplay, setOncanplaythrough, setOnchange, setOnclick, setOnclose, setOncontextmenu, setOncopy, setOncuechange, setOncut, setOndblclick, setOndrag, setOndragend, setOndragenter, setOndragleave, setOndragover, setOndragstart, setOndrop, setOndurationchange, setOnemptied, setOnended, setOnerror, setOnfocus, setOngotpointercapture, setOninput, setOninvalid, setOnkeydown, setOnkeypress, setOnkeyup, setOnload, setOnloadeddata, setOnloadedmetadata, setOnloadstart, setOnlostpointercapture, setOnmousedown, setOnmouseenter, setOnmouseleave, setOnmousemove, setOnmouseout, setOnmouseover, setOnmouseup, setOnmousewheel, setOnmozfullscreenchange, setOnmozfullscreenerror, setOnpaste, setOnpause, setOnplay, setOnplaying, setOnpointercancel, setOnpointerdown, setOnpointerenter, setOnpointerleave, setOnpointermove, setOnpointerout, setOnpointerover, setOnpointerup, setOnprogress, setOnratechange, setOnreset, setOnresize, setOnscroll, setOnscrollend, setOnseeked, setOnseeking, setOnselect, setOnselectionchange, setOnselectstart, setOnstalled, setOnsubmit, setOnsuspend, setOntimeupdate, setOntoggle, setOntransitioncancel, setOntransitionend, setOntransitionrun, setOntransitionstart, setOnvolumechange, setOnwaiting, setOnwheel, setOuterText, setSpellcheck, setStyle, setTabIndex, setTextContent, setTitle, setVAlign, setValue, setWidthOrHeight, toString

Methods inherited from class Element

after, append, before, closest, createAttributesObject, createEventHandler, getAttribute, getAttributeNodeNS, getAttributeNS, getAttributes, getChildElementCount, getChildren, getClassList, getClassName_js, getClientHeight, getClientLeft, getClientRects, getClientTop, getClientWidth, getElementsByClassName, getElementsByTagName, getElementsByTagNameNS, getFirstElementChild, getId, getInnerHTML, getInnerHTML, getLastElementChild, getNamespaceURI, getNextElementSibling, getOnbeforecopy, getOnbeforecut, getOnbeforepaste, getOnsearch, getOnwebkitfullscreenchange, getOnwebkitfullscreenerror, getOuterHTML, getParentElement, getPreviousElementSibling, getScrollHeight, getScrollLeft, getScrollTop, getScrollWidth, getTagName, hasAttribute, hasAttributeNS, hasAttributes, innerHTML, insertAdjacentElement, insertAdjacentHTML, insertAdjacentText, isDisplayNone, matches, mozMatchesSelector, prepend, printChildren, printNode, querySelector, querySelectorAll, releaseCapture, remove, removeAttribute, removeAttributeNode, removeAttributeNS, replaceChildren, replaceWith, scroll, scrollBy, scrollIntoView, scrollIntoViewIfNeeded, scrollTo, setAttributeNode, setAttributeNS, setCapture, setClassName_js, setId, setInnerHTML, setOnbeforecopy, setOnbeforecut, setOnbeforepaste, setOnsearch, setOnwebkitfullscreenchange, setOnwebkitfullscreenerror, setOuterHTML, setScrollLeft, setScrollTop, toggleAttribute, webkitMatchesSelector

Methods inherited from class Node

after, append, appendChild, before, cloneNode, compareDocumentPosition, contains, getBaseURI, getChildNodes, getFirstChild, getJavaScriptNode, getLastChild, getNextSibling, getNodeType, getNodeValue, getOwnerDocument, getParent, getParentNode, getPreviousSibling, getRootNode, getTextContent, hasChildNodes, insertBefore, insertBeforeImpl, isEqualNode, isSameNode, normalize, prepend, removeChild, replaceChild, replaceChildren, replaceWith, setNodeValue

Methods inherited from class EventTarget

addEventListener, clearEventListenersContainer, dispatchEvent, executeEventLocally, fireEvent, getEventHandler, getEventListenersContainer, hasEventHandlers, isEventHandlerOnWindow, removeEventListener, setEventHandler

Methods inherited from class HtmlUnitScriptable

clone, equivalentValues, get, getBrowserVersion, getClassName, getDefaultValue, getPrototype, getScriptableFor, getStartingScope, getWindow, getWindow, getWithPreemption, has, hasInstance, initParentScope, makeScriptableFor, put, setClassName, setDomNode, setParentScope, setupPromise, setupRejectedPromise

Methods inherited from class org.htmlunit.corejs.javascript.ScriptableObject

applyDescriptorToAttributeBitset, associateValue, avoidObjectDetection, buildDataDescriptor, callMethod, callMethod, checkPropertyChange, checkPropertyDefinition, defineClass, defineClass, defineClass, defineConst, defineConstProperty, defineFunctionProperties, defineOwnProperties, defineOwnProperty, defineOwnProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, delete, delete, delete, deleteProperty, deleteProperty, deleteProperty, ensureScriptable, ensureScriptableObject, ensureSymbolScriptable, get, get, get, getAllIds, getArrayPrototype, getAssociatedValue, getAttributes, getAttributes, getAttributes, getAttributes, getAttributes, getClassPrototype, getDefaultValue, getExternalArrayData, getExternalArrayLength, getFunctionPrototype, getGeneratorFunctionPrototype, getGetterOrSetter, getGetterOrSetter, getIds, getObjectPrototype, getOwnPropertyDescriptor, getParentScope, getProperty, getProperty, getProperty, getPropertyIds, getPrototype, getTopLevelScope, getTopScopeValue, getTypedProperty, getTypedProperty, getTypeOf, has, has, hasProperty, hasProperty, hasProperty, isAccessorDescriptor, isConst, isDataDescriptor, isEmpty, isExtensible, isFalse, isGenericDescriptor, isGetterOrSetter, isSealed, isTrue, preventExtensions, put, put, putConst, putConstProperty, putProperty, putProperty, putProperty, querySlot, redefineProperty, sameValue, sealObject, setAttributes, setAttributes, setAttributes, setAttributes, setAttributes, setCommonDescriptorProperties, setExternalArrayData, setGetterOrSetter, setPrototype, size

Methods inherited from class Object

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

Field Details

context2d_

private CanvasRenderingContext2D context2d_

Constructor Details

HTMLCanvasElement

public HTMLCanvasElement()

Creates an instance.

Method Details

jsConstructor

public void jsConstructor()

JavaScript constructor.

Overrides:

jsConstructor in class HTMLElement

getWidth

public int getWidth()

Returns the width property.

Returns:

the width property

getValue

static Integer getValue(String value)

setWidth

public void setWidth(int width)

Sets the width property.

Parameters:

width - the width property

getHeight

public int getHeight()

Returns the height property.

Returns:

the height property

setHeight

public void setHeight(int height)

Sets the height property.

Parameters:

height - the height property

getContext

public Object getContext(String contextId)

Gets the context.

Parameters:

contextId - the context id

Returns:

Returns an object that exposes an API for drawing on the canvas, or null if the given context ID is not supported

toDataURL

public String toDataURL(Object type)

Get the data: URL representation of the Canvas element. Here we return an empty image.

Parameters:

type - the type (optional)

Returns:

the data URL