PainterController class
Used with a Painter widget to control drawing.
- Inheritance
-
- Object
- ChangeNotifier
- PainterController
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