Picture class abstract
An object representing a sequence of recorded graphical operations.
To create a Picture, use a PictureRecorder.
A Picture can be placed in a Scene using a SceneBuilder, via the SceneBuilder.addPicture method. A Picture can also be drawn into a Canvas, using the Canvas.drawPicture method.
Constructors
- Picture()
Properties
- approximateBytesUsed → int
-
Returns the approximate number of bytes allocated for this object.
no setter
- debugDisposed → bool
-
Whether this reference to the underlying picture is disposed.
no setter
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
dispose(
) → void - Release the resources used by this object. The object is no longer usable after this method is called.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toImage(
int width, int height) → Future< Image> - Creates an image from this picture.
-
toImageSync(
int width, int height) → Image - Synchronously creates a handle to an image of this picture.
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Properties
- onCreate ↔ PictureEventCallback?
-
A callback that is invoked to report a picture creation.
getter/setter pair
- onDispose ↔ PictureEventCallback?
-
A callback that is invoked to report the picture disposal.
getter/setter pair