PainterController class

Used with a Painter widget to control drawing.

Inheritance

Constructors

PainterController()
Creates a new instance for the use in a Painter widget.

Properties

backgroundColor Color
Retrieves the current background color.
getter/setter pair
drawColor Color
Retrieves the current draw color.
getter/setter pair
eraseMode bool
Returns true if the the PainterController is currently in erase mode, false otherwise.
getter/setter pair
hashCode int
The hash code for this object.
no setterinherited
hasListeners bool
Whether any listeners are currently registered.
no setterinherited
isEmpty bool
Returns true if nothing has been drawn yet.
no setter
runtimeType Type
A representation of the runtime type of the object.
no setterinherited
thickness double
Returns the current thickness that is used for drawing.
getter/setter pair

Methods

addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
inherited
clear() → void
Deletes all drawing actions, but does not affect the background. If the picture is already finished, this is a no-op and does nothing.
dispose() → void
Discards any resources used by the object. After this is called, the object is not in a usable state and should be discarded (calls to addListener will throw after the object is disposed).
inherited
finish() PictureDetails
Finishes drawing and returns the rendered PictureDetails of the drawing. The drawing is cached and on subsequent calls to this method, the cached drawing is returned.
isFinished() bool
Returns true if this drawing is finished.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners() → void
Call all the registered listeners.
inherited
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that are notified when the object changes.
inherited
toString() String
A string representation of this object.
inherited
undo() → void
Undoes the last drawing action (but not a background color change). If the picture is already finished, this is a no-op and does nothing.

Operators

operator ==(Object other) bool
The equality operator.
inherited