| Maintainer | [email protected] |
|---|---|
| Stability | experimental |
| Portability | portable (FFI) |
| Safe Haskell | Safe |
| Language | Haskell2010 |
System.Console.Terminfo.Cursor
Contents
Description
This module provides capabilities for moving the cursor on the terminal.
Synopsis
- termLines :: Capability Int
- termColumns :: Capability Int
- autoRightMargin :: Capability Bool
- autoLeftMargin :: Capability Bool
- wraparoundGlitch :: Capability Bool
- carriageReturn :: TermStr s => Capability s
- newline :: TermStr s => Capability s
- scrollForward :: TermStr s => Capability s
- scrollReverse :: TermStr s => Capability s
- moveDown :: TermStr s => Capability (Int -> s)
- moveLeft :: TermStr s => Capability (Int -> s)
- moveRight :: TermStr s => Capability (Int -> s)
- moveUp :: TermStr s => Capability (Int -> s)
- cursorDown1 :: TermStr s => Capability s
- cursorLeft1 :: TermStr s => Capability s
- cursorRight1 :: TermStr s => Capability s
- cursorUp1 :: TermStr s => Capability s
- cursorDown :: TermStr s => Capability (Int -> s)
- cursorLeft :: TermStr s => Capability (Int -> s)
- cursorRight :: TermStr s => Capability (Int -> s)
- cursorUp :: TermStr s => Capability (Int -> s)
- cursorHome :: TermStr s => Capability s
- cursorToLL :: TermStr s => Capability s
- cursorAddress :: TermStr s => Capability (Point -> s)
- data Point = Point {}
- rowAddress :: TermStr s => Capability (Int -> s)
- columnAddress :: TermStr s => Capability (Int -> s)
Terminal dimensions
Get the default size of the terminal. For
resizeable terminals (e.g., xterm), these may not
correspond to the actual dimensions.
Cursor flags
autoRightMargin :: Capability Bool Source #
This flag specifies that the cursor wraps automatically from the last column of one line to the first column of the next.
autoLeftMargin :: Capability Bool Source #
This flag specifies that a backspace at column 0 wraps the cursor to the last column of the previous line.
wraparoundGlitch :: Capability Bool Source #
This flag specifies that the terminal does not perform
autoRightMargin-style wrapping when the character which would cause the
wraparound is a control character.
This is also known as the "newline glitch" or "magic wrap".
For example, in an 80-column terminal with this behavior, the following will print single-spaced instead of double-spaced:
replicateM_ 5 $ putStr $ replicate 80 'x' ++ "\n"
Scrolling
carriageReturn :: TermStr s => Capability s Source #
The cr capability, which moves the cursor to the first column of the
current line.
newline :: TermStr s => Capability s Source #
The nel capability, which moves the cursor to the first column of
the next line. It behaves like a carriage return followed by a line feed.
If nel is not defined, this may be built out of other capabilities.
scrollForward :: TermStr s => Capability s Source #
scrollReverse :: TermStr s => Capability s Source #
Relative cursor movements
The following functions for cursor movement will
combine the more primitive capabilities. For example,
moveDown may use either cursorDown or
cursorDown1 depending on the parameter and which of
cud and cud1 are defined.
Primitive movement capabilities
These capabilities correspond directly to cub, cud,
cub1, cud1, etc.
cursorDown1 :: TermStr s => Capability s Source #
cursorLeft1 :: TermStr s => Capability s Source #
cursorRight1 :: TermStr s => Capability s Source #
cursorUp1 :: TermStr s => Capability s Source #
cursorDown :: TermStr s => Capability (Int -> s) Source #
cursorLeft :: TermStr s => Capability (Int -> s) Source #
cursorRight :: TermStr s => Capability (Int -> s) Source #
cursorHome :: TermStr s => Capability s Source #
cursorToLL :: TermStr s => Capability s Source #
Absolute cursor movements
cursorAddress :: TermStr s => Capability (Point -> s) Source #
rowAddress :: TermStr s => Capability (Int -> s) Source #
columnAddress :: TermStr s => Capability (Int -> s) Source #