RGtk2: gtkTextViewScrollToIter – R documentation

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gtkTextViewScrollToIter

Description

Scrolls text.view so that iter is on the screen in the position indicated by xalign and yalign. An alignment of 0.0 indicates left or top, 1.0 indicates right or bottom, 0.5 means center. If use.align is FALSE, the text scrolls the minimal distance to get the mark onscreen, possibly not scrolling at all. The effective screen for purposes of this function is reduced by a margin of size within.margin.

Usage

gtkTextViewScrollToIter(object, iter, within.margin, use.align = FALSE, 
    xalign = 0.5, yalign = 0.5)

Arguments

`object`	a `GtkTextView`
`iter`	a `GtkTextIter`
`within.margin`	margin as a [0.0,0.5) fraction of screen size
`use.align`	whether to use alignment arguments (if `FALSE`, just get the mark onscreen)
`xalign`	horizontal alignment of mark within visible area
`yalign`	vertical alignment of mark within visible area

Details

Note that this function uses the currently-computed height of the lines in the text buffer. Line heights are computed in an idle handler; so this function may not have the desired effect if it's called before the height computations. To avoid oddness, consider using gtkTextViewScrollToMark which saves a point to be scrolled to after line validation.

Value

[logical] TRUE if scrolling occurred

Author(s)

Derived by RGtkGen from GTK+ documentation

RGtk2

R Bindings for Gtk 2.8.0 and Above

v2.20.36

GPL

Authors

Michael Lawrence <michafla@gene.com> and Duncan Temple Lang <duncan@wald.ucdavis.edu>

Initial release