Cairo: Cairo.capture – R documentation

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Cairo.capture

Capture contents of an image backend or a display list snapshot.

Description

Cairo.capture is essentially the same as dev.capture(native=TRUE) with the exception that it works where dev.capture doesn't such as onSave callbacks.

Cairo.snapshot is very similar to recordPlot except it also allows to retrieve the last snapshot.

Usage

Cairo.capture(device = dev.cur())
Cairo.snapshot(device = dev.cur(), last=FALSE)

Arguments

`device`	device number or an object of the class `Cairo` (as obtained from the `Cairo` function).
`last`	logical, if `FALSE` then a new snapshot is created (exactly the same as `recordPlot()`), if `TRUE` then the last known snapshot is retrieved, if `NA` then a snapshot is created first, but if the display list is empty last snapshot is retrieved instead.

Value

Cairo.capture: object of the class nativeRaster.

Cairo.snapshot: object of the class recordedplot.

Author(s)

Simon Urbanek

Cairo

R Graphics Device using Cairo Graphics Library for Creating High-Quality Bitmap (PNG, JPEG, TIFF), Vector (PDF, SVG, PostScript) and Display (X11 and Win32) Output

v1.5-12.2

GPL-2

Authors

Simon Urbanek <Simon.Urbanek@r-project.org>, Jeffrey Horner <jeff.horner@vanderbilt.edu>

Initial release