RGtk2: gdkPixbufCompositeColor – R documentation

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gdkPixbufCompositeColor

Description

Creates a transformation of the source image src by scaling by scale.x and scale.y then translating by offset.x and offset.y, then composites the rectangle (dest.x ,dest.y, dest.width, dest.height) of the resulting image with a checkboard of the colors color1 and color2 and renders it onto the destination image.

Usage

gdkPixbufCompositeColor(object, dest, dest.x, dest.y, dest.width, 
    dest.height, offset.x, offset.y, scale.x, scale.y, interp.type, 
    overall.alpha, check.x, check.y, check.size, color1, color2)

Arguments

`object`	a `GdkPixbuf`
`dest`	the `GdkPixbuf` into which to render the results
`dest.x`	the left coordinate for region to render
`dest.y`	the top coordinate for region to render
`dest.width`	the width of the region to render
`dest.height`	the height of the region to render
`offset.x`	the offset in the X direction (currently rounded to an integer)
`offset.y`	the offset in the Y direction (currently rounded to an integer)
`scale.x`	the scale factor in the X direction
`scale.y`	the scale factor in the Y direction
`interp.type`	the interpolation type for the transformation.
`overall.alpha`	overall alpha for source image (0..255)
`check.x`	the X offset for the checkboard (origin of checkboard is at -`check.x`, -`check.y`)
`check.y`	the Y offset for the checkboard
`check.size`	the size of checks in the checkboard (must be a power of two)
`color1`	the color of check at upper left
`color2`	the color of the other check

Details

See gdkPixbufCompositeColorSimple for a simpler variant of this function suitable for many tasks.

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