SixelImageDrawable class final

A Drawable that renders an image using Sixel Graphics.

Sixel is a legacy but widely supported bitmap graphics protocol for terminals. This drawable encodes the image into Sixel format and renders it within the specified columns and rows.

The image is automatically resized to fit the target cell dimensions before encoding, using the estimated cell pixel size to compute the appropriate Sixel pixel dimensions. Color quantization is applied to reduce the palette to at most maxColors entries.

Implemented types

• Drawable

Constructors

SixelImageDrawable(Image image, {int? columns, int? rows, int maxColors = SixelImage.maxPaletteSize, int cellPixelWidth = 8, int cellPixelHeight = 16})

Creates a Sixel protocol image drawable.

Properties

cellPixelHeight → int

Estimated pixel height of a single terminal cell.

final

cellPixelWidth → int

Estimated pixel width of a single terminal cell.

final

columns → int?

Width of the drawable in terminal columns.

final

hashCode → int

The hash code for this object.

no setter, inherited

image → Image

The raw RGBA image data.

final

maxColors → int

Maximum number of colors in the Sixel palette (1–256).

final

rows → int?

Height of the drawable in terminal rows.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

bounds() → Rectangle

Returns the bounds required to draw this drawable.

override

draw(Screen screen, Rectangle area) → void

Draws this drawable into screen within area.

override

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