Class: LengthConfigs

Kekule.Render. LengthConfigs

new LengthConfigs()

Draw length and related options. In this class, every property value should be a float based on unitLength. To retrieve a value based on px, a easy way is call getActualLength(propName) method.
Properties:
Name Type Description
unitLength Float The unit length in px. Every other length are based on this property. For instance, if a bond length is 12 and unit length is 2px, then the actual bond length will be 24px. //@property {Float} labelFontSize Default font size to draw labels. For example: 12. //@property {Float} atomFontSize Default font size to draw atoms and other chem nodes. For example: 12.
atomLabelBoxExpandRatio Float Atom label box width/height should be a little large then font size. This value is quite useful in clip bond between nodes.
chargeMarkFontSize Float Size of font to draw charge and radical mark.
chargeMarkMargin Float Gap between charge/radical mark center and node point. //@property {Float} chargeMarkCircleWidth Width of circle stroke around charge mark. Not used yet.
chemMarkerFontSize Float Default size of font to draw chem marker.
chemMarkerMargin Float Default gap between chem marker object center and node point.
allenCenterAtomRadius Float Radius of dot drawn in allen center carbon. 0 for do not draw explicit dot.
defBondLength Float Default length of a chem bond.
bondLineWidth Float Line width to draw a general bond.
boldBondLineWidthRatio Float Times of line width to a normal line to draw a bold bond line.
hashSpacing Float Spacing between small lines in hash bond line.
multipleBondSpacingRatio Float Spacing between two lines in double or triple bond. This value related to bond length. The actual value should be calculated when drawing.
multipleBondSpacingAbs Float Spacing between two lines in double or triple bond. This value is fixed (regardless of bond length).
multipleBondMaxAbsSpacing Float If this value is set, the max spacing between multiple bond is fixed.
bondArrowLength Float The length of end triangle in arrow bond.
bondArrowWidth Float The width of end triangle in arrow bond.
bondWedgeWidth Float The width of end triangle in wedge bond.
bondWedgeHashMinWidth Float Start a hash wedge from 0 is often make some part hard to see. So we start from a small width to make better outlooks.
bondWavyRadius Float Radius to draw arc of wavy bond.
glyphStrokeWidth Float The default width of glyph strokes.
rxnMolMargin Float Magin between reactants/products in reaction formula.
autofitContextPadding Float Padding length when draw on context with drawOptions.autofit.
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Extends

Methods

addBoolConfigProp(name, defaultValue, additionalOptions)

Add a boolean config property item.
Parameters:
Name Type Description
name Object
defaultValue Bool
additionalOptions Hash
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addConfigProp(name, dataType, defaultValue, additionalOptions)

Add a config property item, actually define a new property. A config property usually has simple getter/setter and must be serializable.
Parameters:
Name Type Description
name Object
dataType Object
defaultValue Variant
additionalOptions Hash
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addEventListener(eventName, listener, thisArg) → {Object}

Add an event handler.
Parameters:
Name Type Description
eventName String Name of event.
listener function Handler function.
thisArg Object The scope object applied when the handler is called.
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Returns:
Handler info object on success, null on fail.
Type
Object

addFloatConfigProp(name, defaultValue, additionalOptions)

Add a float config property item.
Parameters:
Name Type Description
name Object
defaultValue Float
additionalOptions Hash
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addHashConfigProp(name, defaultValue, additionalOptions)

Add a Hash config property item.
Parameters:
Name Type Description
name Object
defaultValue Hash
additionalOptions Hash
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addIntConfigProp(name, defaultValue, additionalOptions)

Add an integer config property item.
Parameters:
Name Type Description
name Object
defaultValue Int
additionalOptions Hash
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addNumConfigProp(name, defaultValue, additionalOptions)

Add a numberic config property item.
Parameters:
Name Type Description
name Object
defaultValue Number
additionalOptions Hash
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addOnceEventListener(eventName, listener, thisArg) → {Object}

Add an event handler that will only be evoked once.
Parameters:
Name Type Description
eventName String Name of event.
listener function Handler function.
thisArg Object The scope object applied when the handler is called.
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Returns:
Handler info object on success, null on fail.
Type
Object

addStrConfigProp(name, defaultValue, additionalOptions)

Add a string config property item.
Parameters:
Name Type Description
name Object
defaultValue String
additionalOptions Hash
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afterInitialization()

Do jobs after initialization, desendants can override this method
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assign(src)

Assign data of src to current config object.
Parameters:
Name Type Description
src Kekule.AbstractConfig
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assignTo(targetObj)

Assign data in this object to targetObj.
Parameters:
Name Type Description
targetObj ObjectEx
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beginUpdate()

Begin to update multiple properties of object. In update state, all changed properties will not invoke propertySet event until method endUpdate is called.
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clone() → {ObjectEx}

Returns a cloned object.
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Returns:
Type
ObjectEx

copyPropsTo(dest)

Copy property values to dest object. Dest must be a desendant of ObjectEx.
Parameters:
Name Type Description
dest ObjectEx
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defineEvent(eventName) → {Object}

Define an event in class. Event is actually a special property with type Class.EventHandlerList
Parameters:
Name Type Description
eventName String Name of event.
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  • Yes
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Returns:
Property info object created.
Type
Object

defineProp(propName, options) → {Object}

Define a property in class.
Parameters:
Name Type Description
propName String Name of property, case sensitive.
options Object A hash object, may contains the following fields: { dataType: type of property data, a string constant in DataType or a class name. //storeField: field in object to store property value, // not allowed for running speed getter: getter function, setter: setter function, if set to null, the property will be read-only, serializable: boolean, whether the property should be save or restore in serialization. Default is true. defaultValue: default value of property, can only be simple type (number, string, bool...) }
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Returns:
Property info object added to property list.
Type
Object

doEndUpdate()

Actual work of endUpdate, just invoke all property change events.
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doPropChanged(propName, newValue)

Do some job when a property value is changed. Descendants can override this.
Parameters:
Name Type Description
propName String Name of property.
newValue Variant New value of the property.
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endUpdate()

Update end and notify all properties changed after calling of beginUpdate.
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finalize()

Free resources used. Like finalize method in Java.
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getActualLength(propName) → {Float}

Get actual length in px for a config property.
Parameters:
Name Type Description
propName String
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Returns:
Type
Float

getAllPropList() → {Class.PropList}

Get list of all properties in this class, including ones inherited from parent class.
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Returns:
Type
Class.PropList

getClass() → {Object}

Get class of this object.
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Returns:
Class object.
Type
Object

getClassLocalName() → {String}

Get last part of class name of this object. For example, 'Atom' will be returned by instance of class 'Kekule.Atom'.
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Returns:
Last part of class name of object.
Type
String

getClassName() → {String}

Get class name of this object, usually returns CLASS_NAME field.
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Returns:
Class name of object.
Type
String

getEventHandlerList(eventName) → {Class.EventHandlerList}

Get the handler list of a event.
Parameters:
Name Type Description
eventName String Name of event.
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Returns:
Handler list of event. If this event does not exist, null is returned.
Type
Class.EventHandlerList

getOwnPropList() → {Class.PropList}

Get property list of this class. The properties inherited from parent class will not be returned.
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Returns:
Type
Class.PropList

getPropertyDataType(propName) → {String}

Returns type constants of property.
Parameters:
Name Type Description
propName String
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Returns:
Values from DataType.
Type
String

getPropInfo(propName, ownPropertyOnly) → {Object}

Get property info object from the property list of current class.
Parameters:
Name Type Description
propName String Name of property.
ownPropertyOnly Bool If true, only property defined in this class will be checked.
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Returns:
Property info object found. If there is no such a property, null is returned.
Type
Object

getPropListOfScopes(scopes) → {Class.PropList}

Get list of all properties of certain scopes in this class, including ones inherited from parent class.
Parameters:
Name Type Description
scopes Array Array item from Class.PropertyScope.
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Returns:
Type
Class.PropList

getPropStoreFieldValue(propName) → {Variant}

Get value of a property's store field. Use this method to get property value and avoid the call of property getter. Note: if the property has no store field, this method may returns null or undefined.
Parameters:
Name Type Description
propName String Name of property.
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Returns:
Value of property. If property does not exists, null is returned.
Type
Variant

getPropValue(propName) → {Variant}

Get value of a property.
Parameters:
Name Type Description
propName String Name of property.
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Returns:
Value of property. If property does not exists, null is returned.
Type
Variant

getPropValues(propNames) → {Hash}

Returns values of a series of properties.
Parameters:
Name Type Description
propNames Variant Can be an array of property names, also can be an object while the direct field names of object will be regarded as property names.
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Returns:
Stores all property name-value pair.
Type
Hash

getPrototype() → {Object}

Get prototype of this object.
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Returns:
Type
Object

getSerializationName() → {String}

Returns a name to be used in serialization. Descendants can override this.
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Returns:
Type
String

getSuperClass() → {Object}

Get super class of this object.
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Returns:
Class object.
Type
Object

getSuperClassPrototype() → {Object}

Get prototype of super class.
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Returns:
If there is no super class, null is returned.
Type
Object

hasDirectProperty(propName) → {Boolean}

Check if property is defined in current class (not inherited from super class).
Parameters:
Name Type Description
propName String Name of property.
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Returns:
Type
Boolean

hasProperty(propName) → {Boolean}

Check if property exists in current class.
Parameters:
Name Type Description
propName String Name of property.
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Returns:
Type
Boolean

initPropValues()

Set initial value of properties. Desendants can override this method.
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invokeEvent(eventName, event)

Invoke an event and call all corresponding handlers (listeners).
Parameters:
Name Type Description
eventName String Event to be invoked.
event Object A hash object with information about event. At least should include the following fields: { name: name of event, target: which object invoke this event, generally this object } If this parameter is not set, the default value {eventName, this} will be used.
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isEventHandlerList(value) → {bool}

Check if a object is Class.EventHandlerList.
Parameters:
Name Type Description
value Object
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Returns:
True or false.
Type
bool

isPropertySerializable(propName) → {Bool}

Returns if property is serializable.
Parameters:
Name Type Description
propName String
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Returns:
Type
Bool

isPropUpdated(propName)

Check whether property is changed in begin/endUpdate procedure.
Parameters:
Name Type Description
propName Object
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isUpdating()

Check if object is in updating state.
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loaded()

Called after this object is loaded by a serialization system. Descendants may override this.
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loadObj(srcNode, serializerOrName)

load current object from srcNode.
Parameters:
Name Type Description
srcNode Object Storage node to load object. Different serializer requires different node.
serializerOrName Variant A ObjSerializer instance or name registered in ObjSerializerFactory. Can be null to use the default serializer.
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notifyPropSet(propName, newValue)

Notify that a property value is set
Parameters:
Name Type Description
propName String Name of property.
newValue Variant New value of the property.
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objectChange()

Called when object is changed.
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off(eventName, listener, thisArg)

Remove an event handler, shortcut for (@link ObjectEx.removeEventListener}.
Parameters:
Name Type Description
eventName String Name of event.
listener function Handler function.
thisArg Object The scope object applied when the handler is called. If not set, all listenr function in list will be removed.
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on(eventName, listener, thisArg) → {Object}

Add an event handler, shortcut for ObjectEx.addEventListener.
Parameters:
Name Type Description
eventName String Name of event.
listener function Handler function.
thisArg Object The scope object applied when the handler is called.
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Returns:
Handler info object on success, null on fail.
Type
Object

once(eventName, listener, thisArg) → {Object}

Add an event handler that will only be evoked once, shortcut for ObjectEx.addOnceEventListener.
Parameters:
Name Type Description
eventName String Name of event.
listener function Handler function.
thisArg Object The scope object applied when the handler is called.
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Returns:
Handler info object on success, null on fail.
Type
Object

overwriteMethod(methodName, newMethod) → {ObjectEx}

Overwrite method of object instance (rather than prototype) with a new one.
Parameters:
Name Type Description
methodName String
newMethod Func New function. The arguments of function should be same as overwritten one plus a extra leading param stores the old method. e.g. Overwrite getPropValue method:
var obj = new ObjectEx();
obj.overwriteMethod('getPropValue', function($old, propName)
{
console.log('new method'); return $old(propName); });
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Returns:
Type
ObjectEx

relayEvent(eventName, event)

Relay event from child of this object.
Parameters:
Name Type Description
eventName String Event to be invoked.
event Object A hash object with information about event.
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removeEventListener(eventName, listener, thisArg)

Remove an event handler.
Parameters:
Name Type Description
eventName String Name of event.
listener function Handler function.
thisArg Object The scope object applied when the handler is called. If not set, all listenr function in list will be removed.
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saved()

Called after this object is saved through a serialization system. Descendants may override this.
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saveObj(destNode, serializerOrName, options)

Save current object to destNode.
Parameters:
Name Type Description
destNode Object Storage node to save object. Different serializer requires different node.
serializerOrName Variant A ObjSerializer instance or name registered in ObjSerializerFactory. Can be null to use the default serializer.
options Hash
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setPropStoreFieldValue(propName) → {Variant}

Set value of a property's store field. Use this method to set property value and avoid the call of property setter. Readonly property can also be changed in this method. Note: if the property has no store field, this method will has no effect on property.
Parameters:
Name Type Description
propName String Name of property.
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Returns:
Value of property. If property does not exists, null is returned.
Type
Variant

setPropValue(propName, value, ignoreReadOnly)

Set value of a property.
Parameters:
Name Type Description
propName String Name of property.
value Variant Value of the property.
ignoreReadOnly bool Try set the value directly through store field even if the property is a readonly one (without a setter).
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setPropValues(hash, ignoreReadOnly)

Set a series of property.
Parameters:
Name Type Description
hash Hash A hash object, its key and values will be used to set property value.
ignoreReadOnly bool Try set the value directly through store field even if the property is a readonly one (without a setter).
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setPropValueX()

Set value of a property. Similar to ObjectEx.setPropValue but can pass in multiple params. The first param is always the property name while the rest will be put into setter method (setXXX).
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stopEventPropagation(event)

Stop propagation of event, disallow it to bubble to higher level.
Parameters:
Name Type Description
event Object
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toHash()

Wrap all properties to a hash object.
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Events

change

Invoked when the object has been modified. event param of it has one fields: {changedPropNames: Array}
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finalize

Invoked when ObjectEx#finalize is called and the object is released. event param of it has one fields: {obj}
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propValueSet

Invoked when a property value is set by its setter event param of it has two fields: {propName, propValue} If property enablePropValueSetEvent is false, this event will never be fired.
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