gdkPixbufRenderToDrawableAlpha: gdkPixbufRenderToDrawableAlpha

In RGtk2: R Bindings for Gtk 2.8.0 and Above

Description

Renders a rectangular portion of a pixbuf to a drawable. The destination drawable must have a colormap. All windows have a colormap, however, pixmaps only have colormap by default if they were created with a non-NULL window argument. Otherwise a colormap must be set on them with gdk_drawable_set_colormap. WARNING: gdk_pixbuf_render_to_drawable_alpha has been deprecated since version 2.4 and should not be used in newly-written code. This function is obsolete. Use gdkDrawPixbuf instead.

Usage

gdkPixbufRenderToDrawableAlpha(object, drawable, src.x = 0, src.y = 0, 
    dest.x, dest.y, width = -1, height = -1, alpha.mode = NULL, 
    alpha.threshold = NULL, dither = "GDK_RGB_DITHER_NORMAL", 
    x.dither = 0, y.dither = 0)

Arguments

object	A pixbuf.
drawable	Destination drawable.
src.x	Source X coordinate within pixbuf.
src.y	Source Y coordinates within pixbuf.
dest.x	Destination X coordinate within drawable.
dest.y	Destination Y coordinate within drawable.
width	Width of region to render, in pixels, or -1 to use pixbuf width.
height	Height of region to render, in pixels, or -1 to use pixbuf height.
alpha.mode	Ignored. Present for backwards compatibility.
alpha.threshold	Ignored. Present for backwards compatibility
dither	Dithering mode for GdkRGB.
x.dither	X offset for dither.
y.dither	Y offset for dither.

Details

On older X servers, rendering pixbufs with an alpha channel involves round trips to the X server, and may be somewhat slow.

Author(s)

Derived by RGtkGen from GTK+ documentation

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