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. |