cairoStroke {RGtk2} | R Documentation

## cairoStroke

### Description

A drawing operator that strokes the current path according to the current line width, line join, line cap, and dash settings. After `cairoStroke`, the current path will be cleared from the cairo context. See `cairoSetLineWidth`, `cairoSetLineJoin`, `cairoSetLineCap`, `cairoSetDash`, and `cairoStrokePreserve`.

### Usage

    cairoStroke(cr)

### Arguments

``cr`` | [`Cairo`] a cairo context

### Details

Note: Degenerate segments and sub-paths are treated specially and provide a useful result. These can result in two different situations:

1. Zero-length "on" segments set in `cairoSetDash`. If the cap style is `CAIRO_LINE_CAP_ROUND` or `CAIRO_LINE_CAP_SQUARE` then these segments will be drawn as circular dots or squares respectively. In the case of `CAIRO_LINE_CAP_SQUARE`, the orientation of the squares is determined by the direction of the underlying path.

2. A sub-path created by `cairoMoveTo` followed by either a `cairoClosePath` or one or more calls to `cairoLineTo` to the same coordinate as the `cairoMoveTo`. If the cap style is `CAIRO_LINE_CAP_ROUND` then these sub-paths will be drawn as circular dots. Note that in the case of `CAIRO_LINE_CAP_SQUARE` a degenerate sub-path will not be drawn at all, (since the correct orientation is indeterminate).

In no case will a cap style of `CAIRO_LINE_CAP_BUTT` cause anything to be drawn in the case of either degenerate segments or sub-paths.

### Author(s)

Derived by RGtkGen from GTK+ documentation

[Package RGtk2 version 2.20.36.3 Index]