ANSI Support

Standard ANSI Sequences

Control Characters

Sequence Hex-Code Description
\r 0x0D Carriage Return (CR) - Return to beginning of line
\n 0x0A Line Feed (LF) - Go to next line
\f 0x0C Form Feed (FF) - Same effect as LF
\b 0x08 Backspace (BS) - Go back one character
\t 0x09 Horizontal Tab (HT) - Go to next tabulator position
\u001B 0x1B Escape (ESC) - Start of ANSI sequence

Example

Draw.writeText("Hello \t World!");

Attribute Sequences

Sequence Description
\u001B [ m Set bold, underline and inverse mode off
\u001B [ 0 m Set bold, underline and inverse mode off
\u001B [ 1 m Set bold mode on
\u001B [ 4 m Set underline mode on
\u001B [ 7 m Set invert mode on

Example

Draw.writeText("Only the expression " + "\u001B[4m" + "hello" + "\u001B[m" + " is underlined.");

Display Control Sequences

Sequence Description
\u001B [ 2 J Clear Display
\u001B [ K Erase to end of line
\u001B [ 0 K Erase to end of line

Example

Draw.writeText("\u001B[2J");

Cursor Control Sequences

Sequence Description
\u001B [ <n> A Cursor up <n> rows
\u001B [ <n> B Cursor down <n> rows
\u001B [ <n> C Cursor right <n> columns
\u001B [ <n> D Cursor left <n> columns
\u001B [ <x> ; <y> H Go to <x> <y> position
\u001B [ <x> ; <y> f Go to <x> <y> position
\u001B [ H Go to home (set cursor to x=0 / y=0)
\u001B [ f Go to home (set cursor to x=0 / y=0)

Example

Draw.writeText("\u001B[1A");

Please note, that <x> <y> is used in the opposite order to that in standard ANSI sequences.

Save Restore Sequences

Sequence Description
\u001B [ <n> s Save cursor & attributes to memory position <n> (0 ... 7)
\u001B [ s Save cursor & attributes to memory position 0
\u001B [ <n> u Restore cursor & attributes from memory position <n> (0 ... 7)
\u001B [ u Restore cursor & attributes from memory position 0

Example

Draw.writeText("\u001B[s");

See also:

Private ANSI Extensions


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