cairoSetSourceSurface: cairoSetSourceSurface
In RGtk2: R Bindings for Gtk 2.8.0 and Above

Description Usage Arguments Details Author(s)

This is a convenience function for creating a pattern from surface and setting it as the source in cr with cairoSetSource.

1	cairoSetSourceSurface(cr, surface, x, y)

`cr`	[`Cairo`] a cairo context
`surface`	[`CairoSurface`] a surface to be used to set the source pattern
`x`	[numeric] User-space X coordinate for surface origin
`y`	[numeric] User-space Y coordinate for surface origin

The x and y parameters give the user-space coordinate at which the surface origin should appear. (The surface origin is its upper-left corner before any transformation has been applied.) The x and y patterns are negated and then set as translation values in the pattern matrix.

Other than the initial translation pattern matrix, as described above, all other pattern attributes, (such as its extend mode), are set to the default values as in cairoPatternCreateForSurface. The resulting pattern can be queried with cairoGetSource so that these attributes can be modified if desired, (eg. to create a repeating pattern with cairoPatternSetExtend).

Derived by RGtkGen from GTK+ documentation

RGtk2 documentation built on Oct. 14, 2021, 5:08 p.m.