WebPEncoder class

Encode an image to the PNG format.

Inheritance

• Object
• Encoder
• WebPEncoder

Constructors

WebPEncoder({int format = LOSSY, num quality = 100})

format can be LOSSY or LOSSLESS. quality is controls lossy compression, in the range 0 (smallest file) and 100 (biggest).

Properties

delay ↔ int?

getter/setter pair

format ↔ int

getter/setter pair

hashCode → int

The hash code for this object.

no setter, inherited

output ↔ OutputBuffer?

getter/setter pair

quality ↔ num

getter/setter pair

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

supportsAnimation → bool

Does this encoder support animation?

no setter, override

Methods

addFrame(Image image, {int? duration}) → void

Add a frame to be encoded. Call finish to encode the added frames. If only one frame is added, a single-image WebP is encoded; otherwise if there are more than one frame, a multi-frame animated WebP is encoded.

encodeAnimation(Animation anim) → List<int>?

Encode an animation.

override

encodeImage(Image image) → List<int>

Encode a single frame image.

override

finish() → List<int>?

Encode the images that were added with addFrame.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Constants

LOSSLESS → const int

LOSSY → const int