gdkPixbufNewFromStreamAtScale {RGtk2} | R Documentation

## gdkPixbufNewFromStreamAtScale

### Description

Creates a new pixbuf by loading an image from an input stream.

### Usage

    gdkPixbufNewFromStreamAtScale(stream, width = -1, height = -1,
        preserve.aspect.ratio = 1, cancellable = NULL, .errwarn = TRUE)

### Arguments

``stream`` | a `GInputStream` to load the pixbuf from
``width`` | The width the image should have or -1 to not constrain the width
``height`` | The height the image should have or -1 to not constrain the height
``preserve.aspect.ratio`` | `TRUE` to preserve the image's aspect ratio
``cancellable`` | optional `GCancellable` object, `NULL` to ignore
`.errwarn` | Whether to issue a warning on error or fail silently

### Details

The file format is detected automatically. If `NULL` is returned, then `error` will be set. The `cancellable` can be used to abort the operation from another thread. If the operation was cancelled, the error `GIO_ERROR_CANCELLED` will be returned. Other possible errors are in the `GDK_PIXBUF_ERROR` and `G_IO_ERROR` domains.

The image will be scaled to fit in the requested size, optionally preserving the image's aspect ratio. When preserving the aspect ratio, a `width` of -1 will cause the image to be scaled to the exact given height, and a `height` of -1 will cause the image to be scaled to the exact given width. When not preserving aspect ratio, a `width` or `height` of -1 means to not scale the image at all in that dimension.

The stream is not closed. Since 2.14

### Value

A list containing the following elements:

`retval` | [`GdkPixbuf`] A newly-created pixbuf, or `NULL` if any of several error conditions occurred: the file could not be opened, the image format is not supported, there was not enough memory to allocate the image buffer, the stream contained invalid data, or the operation was cancelled.
``error`` | Return location for an error

### Author(s)

Derived by RGtkGen from GTK+ documentation

[Package RGtk2 version 2.20.36.3 Index]