Constructor
GdkPixbufPixbufnew_from_stream_at_scale
Declaration [src]
GdkPixbuf*
gdk_pixbuf_new_from_stream_at_scale (
GInputStream* stream,
gint width,
gint height,
gboolean preserve_aspect_ratio,
GCancellable* cancellable,
GError** error
)
Description [src]
Creates a new pixbuf by loading an image from an input stream.
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
G_IO_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. If both width
and height
are
given, this function will behave as if the smaller of the two values
is passed as -1.
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.
Available since: | 2.14 |
Parameters
stream |
GInputStream |
A |
|
The data is owned by the caller of the function. | |
width |
gint |
The width the image should have or -1 to not constrain the width. |
|
height |
gint |
The height the image should have or -1 to not constrain the height. |
|
preserve_aspect_ratio |
gboolean |
|
|
cancellable |
GCancellable |
Optional |
|
The argument can be NULL . | |
The data is owned by the caller of the function. | |
error |
GError ** |
The return location for a GError* , or NULL . |
Return value
Returns: | GdkPixbuf |
A newly-created pixbuf. |
|
The caller of the function takes ownership of the data, and is responsible for freeing it. | |
The return value can be NULL . |