SixelImage class
Utilities for Sixel Graphics.
Sixel is a bitmap graphics format for terminals that encodes images in 6-pixel high horizontal strips. Each column of 6 vertical pixels is represented as a single ASCII character (value 63–126, where bits 0–5 map to top-to-bottom pixels).
The format uses:
- Color definitions:
#<index>;2;<r>;<g>;<b>(r, g, b are 0–100) - Sixel data: ASCII characters 63–126 where bits 0–5 represent pixels
- RLE compression:
!<count><char>for repeated characters - Navigation:
$returns to start of strip,-moves to next strip
Constructors
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
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
Static Methods
-
encode(
Image image, {int maxColors = maxPaletteSize}) → String - Encodes an image into Sixel escape sequences.
-
encodeResized(
Image image, {required int columns, required int rows, int cellPixelWidth = 8, int cellPixelHeight = 16, int maxColors = maxPaletteSize}) → String - Encodes an image with resizing to fit the given cell dimensions.
Constants
- maxPaletteSize → const int
- Maximum number of colors allowed in a Sixel palette.