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75 lines
1.7 KiB
Plaintext
75 lines
1.7 KiB
Plaintext
The "lineedit" library provides a
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quick way to implement nice line
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editing into applications.
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It requires the user to store the
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line and the cursor position for the
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line, which allows the user to
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implement any additional logic for
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the application.
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(To clarify, this implies that the
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library's functions are stateless.)
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The functions are as follows:
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draw = function (sW, line, curX, rX):
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Returns the spantext.
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sW is the width of the area.
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line is the safeTextFormatted text.
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curX is the cursor in screen units
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(usually done as part of the text
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formatting)
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This is optional, and if not provided
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the cursor will not be shown.
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rX is an optional camera override.
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If not provided, the cursor will be
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used; if that is not provided, then
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the left side will be shown.
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clamp = function (line, curX):
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Returns curX clamped to the line's
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length (does not check for < 1).
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key = function (ks, kc, line, curX):
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Performs something.
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ks, if truthy, is the unicode.char
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of the key event key character.
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kc is the key event keycode.
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(If feeding in clipboard characters,
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use 0 here.)
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line is the text.
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This returns three values, any of
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which or all of which may be nil for
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a 'no effect' response:
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The new line text, 'lT'.
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The new curX, 'lC'.
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The extended action, 'lX'.
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The following extended actions exist:
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"l<": The cursor should be warped to
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the end of the previous line, if one
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exists (if not, do nothing)
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"l>": The cursor should be warped to
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the start of the next line, if one
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exists (if not, do nothing)
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"w<": This line should be welded to
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the previous line, and the cursor
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should be placed at the weld point.
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"nl": The Enter button was pressed.
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-- This is released into
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the public domain.
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-- No warranty is provided,
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implied or otherwise.
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