RGtk2: cairoPatternGetColorStopRgba – R documentation

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cairoPatternGetColorStopRgba

Description

Gets the color and offset information at the given index for a gradient pattern. Values of index are 0 to 1 less than the number returned by cairoPatternGetColorStopCount.

Usage

cairoPatternGetColorStopRgba(pattern, index)

Arguments

`pattern`	[`CairoPattern`] a `CairoPattern`
`index`	[integer] index of the stop to return data for

Details

Since 1.4

Value

A list containing the following elements:

`retval`	[`CairoStatus`] `CAIRO_STATUS_SUCCESS`, or `CAIRO_STATUS_INVALID_INDEX` if `index` is not valid for the given pattern. If the pattern is not a gradient pattern, `CAIRO_STATUS_PATTERN_TYPE_MISMATCH` is returned.
`offset`	[numeric] return value for the offset of the stop, or `NULL`
`red`	[numeric] return value for red component of color, or `NULL`
`green`	[numeric] return value for green component of color, or `NULL`
`blue`	[numeric] return value for blue component of color, or `NULL`
`alpha`	[numeric] return value for alpha component of color, or `NULL`

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