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GdkPixbuf-2.0.gir
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<?xml version="1.0"?>
<!-- This file was automatically generated from C sources - DO NOT EDIT!
To affect the contents of this file, edit the original C definitions,
and/or use gtk-doc annotations. -->
<repository version="1.2"
xmlns="http://www.gtk.org/introspection/core/1.0"
xmlns:c="http://www.gtk.org/introspection/c/1.0"
xmlns:glib="http://www.gtk.org/introspection/glib/1.0">
<include name="GModule" version="2.0"/>
<include name="Gio" version="2.0"/>
<package name="gdk-pixbuf-2.0"/>
<c:include name="gdk-pixbuf/gdk-pixbuf.h"/>
<namespace name="GdkPixbuf"
version="2.0"
shared-library="libgdk_pixbuf-2.0.so.0"
c:identifier-prefixes="Gdk"
c:symbol-prefixes="gdk">
<enumeration name="Colorspace"
glib:type-name="GdkColorspace"
glib:get-type="gdk_colorspace_get_type"
c:type="GdkColorspace">
<doc xml:space="preserve">This enumeration defines the color spaces that are supported by
the gdk-pixbuf library. Currently only RGB is supported.</doc>
<member name="rgb"
value="0"
c:identifier="GDK_COLORSPACE_RGB"
glib:nick="rgb">
<doc xml:space="preserve">Indicates a red/green/blue additive color space.</doc>
</member>
</enumeration>
<enumeration name="InterpType"
glib:type-name="GdkInterpType"
glib:get-type="gdk_interp_type_get_type"
c:type="GdkInterpType">
<doc xml:space="preserve">This enumeration describes the different interpolation modes that
can be used with the scaling functions. @GDK_INTERP_NEAREST is
the fastest scaling method, but has horrible quality when
scaling down. @GDK_INTERP_BILINEAR is the best choice if you
aren't sure what to choose, it has a good speed/quality balance.
<note>
Cubic filtering is missing from the list; hyperbolic
interpolation is just as fast and results in higher quality.
</note></doc>
<member name="nearest"
value="0"
c:identifier="GDK_INTERP_NEAREST"
glib:nick="nearest">
<doc xml:space="preserve">Nearest neighbor sampling; this is the fastest
and lowest quality mode. Quality is normally unacceptable when scaling
down, but may be OK when scaling up.</doc>
</member>
<member name="tiles"
value="1"
c:identifier="GDK_INTERP_TILES"
glib:nick="tiles">
<doc xml:space="preserve">This is an accurate simulation of the PostScript
image operator without any interpolation enabled. Each pixel is
rendered as a tiny parallelogram of solid color, the edges of which
are implemented with antialiasing. It resembles nearest neighbor for
enlargement, and bilinear for reduction.</doc>
</member>
<member name="bilinear"
value="2"
c:identifier="GDK_INTERP_BILINEAR"
glib:nick="bilinear">
<doc xml:space="preserve">Best quality/speed balance; use this mode by
default. Bilinear interpolation. For enlargement, it is
equivalent to point-sampling the ideal bilinear-interpolated image.
For reduction, it is equivalent to laying down small tiles and
integrating over the coverage area.</doc>
</member>
<member name="hyper"
value="3"
c:identifier="GDK_INTERP_HYPER"
glib:nick="hyper">
<doc xml:space="preserve">This is the slowest and highest quality
reconstruction function. It is derived from the hyperbolic filters in
Wolberg's "Digital Image Warping", and is formally defined as the
hyperbolic-filter sampling the ideal hyperbolic-filter interpolated
image (the filter is designed to be idempotent for 1:1 pixel mapping).</doc>
</member>
</enumeration>
<constant name="PIXBUF_FEATURES_H"
value="1"
c:type="GDK_PIXBUF_FEATURES_H">
<type name="gint" c:type="gint"/>
</constant>
<constant name="PIXBUF_MAGIC_NUMBER"
value="1197763408"
c:type="GDK_PIXBUF_MAGIC_NUMBER">
<doc xml:space="preserve">Magic number for #GdkPixdata structures.</doc>
<type name="gint" c:type="gint"/>
</constant>
<constant name="PIXBUF_MAJOR" value="2" c:type="GDK_PIXBUF_MAJOR">
<doc xml:space="preserve">Major version of gdk-pixbuf library, that is the "0" in
"0.8.2" for example.</doc>
<type name="gint" c:type="gint"/>
</constant>
<constant name="PIXBUF_MICRO" value="11" c:type="GDK_PIXBUF_MICRO">
<doc xml:space="preserve">Micro version of gdk-pixbuf library, that is the "2" in
"0.8.2" for example.</doc>
<type name="gint" c:type="gint"/>
</constant>
<constant name="PIXBUF_MINOR" value="36" c:type="GDK_PIXBUF_MINOR">
<doc xml:space="preserve">Minor version of gdk-pixbuf library, that is the "8" in
"0.8.2" for example.</doc>
<type name="gint" c:type="gint"/>
</constant>
<constant name="PIXBUF_VERSION"
value="2.36.11"
c:type="GDK_PIXBUF_VERSION">
<doc xml:space="preserve">Contains the full version of the gdk-pixbuf header as a string.
This is the version being compiled against; contrast with
#gdk_pixbuf_version.</doc>
<type name="utf8" c:type="gchar*"/>
</constant>
<constant name="PIXDATA_HEADER_LENGTH"
value="24"
c:type="GDK_PIXDATA_HEADER_LENGTH">
<doc xml:space="preserve">The length of a #GdkPixdata structure without the @pixel_data pointer.</doc>
<type name="gint" c:type="gint"/>
</constant>
<class name="Pixbuf"
c:symbol-prefix="pixbuf"
c:type="GdkPixbuf"
parent="GObject.Object"
glib:type-name="GdkPixbuf"
glib:get-type="gdk_pixbuf_get_type">
<doc xml:space="preserve">This is the main structure in the gdk-pixbuf library. It is
used to represent images. It contains information about the
image's pixel data, its color space, bits per sample, width and
height, and the rowstride (the number of bytes between the start of
one row and the start of the next).</doc>
<implements name="Gio.Icon"/>
<implements name="Gio.LoadableIcon"/>
<constructor name="new" c:identifier="gdk_pixbuf_new">
<doc xml:space="preserve">Creates a new #GdkPixbuf structure and allocates a buffer for it. The
buffer has an optimal rowstride. Note that the buffer is not cleared;
you will have to fill it completely yourself.</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">A newly-created #GdkPixbuf with a reference count of 1, or
%NULL if not enough memory could be allocated for the image buffer.</doc>
<type name="Pixbuf" c:type="GdkPixbuf*"/>
</return-value>
<parameters>
<parameter name="colorspace" transfer-ownership="none">
<doc xml:space="preserve">Color space for image</doc>
<type name="Colorspace" c:type="GdkColorspace"/>
</parameter>
<parameter name="has_alpha" transfer-ownership="none">
<doc xml:space="preserve">Whether the image should have transparency information</doc>
<type name="gboolean" c:type="gboolean"/>
</parameter>
<parameter name="bits_per_sample" transfer-ownership="none">
<doc xml:space="preserve">Number of bits per color sample</doc>
<type name="gint" c:type="int"/>
</parameter>
<parameter name="width" transfer-ownership="none">
<doc xml:space="preserve">Width of image in pixels, must be > 0</doc>
<type name="gint" c:type="int"/>
</parameter>
<parameter name="height" transfer-ownership="none">
<doc xml:space="preserve">Height of image in pixels, must be > 0</doc>
<type name="gint" c:type="int"/>
</parameter>
</parameters>
</constructor>
<constructor name="new_from_bytes"
c:identifier="gdk_pixbuf_new_from_bytes"
version="2.32">
<doc xml:space="preserve">Creates a new #GdkPixbuf out of in-memory readonly image data.
Currently only RGB images with 8 bits per sample are supported.
This is the #GBytes variant of gdk_pixbuf_new_from_data().</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">A newly-created #GdkPixbuf structure with a reference count of 1.</doc>
<type name="Pixbuf" c:type="GdkPixbuf*"/>
</return-value>
<parameters>
<parameter name="data" transfer-ownership="none">
<doc xml:space="preserve">Image data in 8-bit/sample packed format inside a #GBytes</doc>
<type name="GLib.Bytes" c:type="GBytes*"/>
</parameter>
<parameter name="colorspace" transfer-ownership="none">
<doc xml:space="preserve">Colorspace for the image data</doc>
<type name="Colorspace" c:type="GdkColorspace"/>
</parameter>
<parameter name="has_alpha" transfer-ownership="none">
<doc xml:space="preserve">Whether the data has an opacity channel</doc>
<type name="gboolean" c:type="gboolean"/>
</parameter>
<parameter name="bits_per_sample" transfer-ownership="none">
<doc xml:space="preserve">Number of bits per sample</doc>
<type name="gint" c:type="int"/>
</parameter>
<parameter name="width" transfer-ownership="none">
<doc xml:space="preserve">Width of the image in pixels, must be > 0</doc>
<type name="gint" c:type="int"/>
</parameter>
<parameter name="height" transfer-ownership="none">
<doc xml:space="preserve">Height of the image in pixels, must be > 0</doc>
<type name="gint" c:type="int"/>
</parameter>
<parameter name="rowstride" transfer-ownership="none">
<doc xml:space="preserve">Distance in bytes between row starts</doc>
<type name="gint" c:type="int"/>
</parameter>
</parameters>
</constructor>
<constructor name="new_from_data"
c:identifier="gdk_pixbuf_new_from_data">
<doc xml:space="preserve">Creates a new #GdkPixbuf out of in-memory image data. Currently only RGB
images with 8 bits per sample are supported.
Since you are providing a pre-allocated pixel buffer, you must also
specify a way to free that data. This is done with a function of
type #GdkPixbufDestroyNotify. When a pixbuf created with is
finalized, your destroy notification function will be called, and
it is its responsibility to free the pixel array.
See also gdk_pixbuf_new_from_bytes().</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">A newly-created #GdkPixbuf structure with a reference count of 1.</doc>
<type name="Pixbuf" c:type="GdkPixbuf*"/>
</return-value>
<parameters>
<parameter name="data" transfer-ownership="none">
<doc xml:space="preserve">Image data in 8-bit/sample packed format</doc>
<array zero-terminated="0" c:type="guchar*">
<type name="guint8" c:type="guchar"/>
</array>
</parameter>
<parameter name="colorspace" transfer-ownership="none">
<doc xml:space="preserve">Colorspace for the image data</doc>
<type name="Colorspace" c:type="GdkColorspace"/>
</parameter>
<parameter name="has_alpha" transfer-ownership="none">
<doc xml:space="preserve">Whether the data has an opacity channel</doc>
<type name="gboolean" c:type="gboolean"/>
</parameter>
<parameter name="bits_per_sample" transfer-ownership="none">
<doc xml:space="preserve">Number of bits per sample</doc>
<type name="gint" c:type="int"/>
</parameter>
<parameter name="width" transfer-ownership="none">
<doc xml:space="preserve">Width of the image in pixels, must be > 0</doc>
<type name="gint" c:type="int"/>
</parameter>
<parameter name="height" transfer-ownership="none">
<doc xml:space="preserve">Height of the image in pixels, must be > 0</doc>
<type name="gint" c:type="int"/>
</parameter>
<parameter name="rowstride" transfer-ownership="none">
<doc xml:space="preserve">Distance in bytes between row starts</doc>
<type name="gint" c:type="int"/>
</parameter>
<parameter name="destroy_fn"
transfer-ownership="none"
nullable="1"
allow-none="1"
scope="async"
closure="8">
<doc xml:space="preserve">Function used to free the data when the pixbuf's reference count
drops to zero, or %NULL if the data should not be freed</doc>
<type name="PixbufDestroyNotify" c:type="GdkPixbufDestroyNotify"/>
</parameter>
<parameter name="destroy_fn_data"
transfer-ownership="none"
nullable="1"
allow-none="1">
<doc xml:space="preserve">Closure data to pass to the destroy notification function</doc>
<type name="gpointer" c:type="gpointer"/>
</parameter>
</parameters>
</constructor>
<constructor name="new_from_file"
c:identifier="gdk_pixbuf_new_from_file"
throws="1">
<doc xml:space="preserve">Creates a new pixbuf by loading an image from a file. The file format is
detected automatically. If %NULL is returned, then @error will be set.
Possible errors are in the #GDK_PIXBUF_ERROR and #G_FILE_ERROR domains.</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">A newly-created pixbuf with a reference count of 1, or %NULL if
any of several error conditions occurred: the file could not be opened,
there was no loader for the file's format, there was not enough memory to
allocate the image buffer, or the image file contained invalid data.</doc>
<type name="Pixbuf" c:type="GdkPixbuf*"/>
</return-value>
<parameters>
<parameter name="filename" transfer-ownership="none">
<doc xml:space="preserve">Name of file to load, in the GLib file name encoding</doc>
<type name="utf8" c:type="const char*"/>
</parameter>
</parameters>
</constructor>
<constructor name="new_from_file_at_scale"
c:identifier="gdk_pixbuf_new_from_file_at_scale"
version="2.6"
throws="1">
<doc xml:space="preserve">Creates a new pixbuf by loading an image from a file. The file format is
detected automatically. If %NULL is returned, then @error will be set.
Possible errors are in the #GDK_PIXBUF_ERROR and #G_FILE_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. Negative values for @width and @height are
allowed since 2.8.</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">A newly-created pixbuf with a reference count of 1, or %NULL
if any of several error conditions occurred: the file could not be opened,
there was no loader for the file's format, there was not enough memory to
allocate the image buffer, or the image file contained invalid data.</doc>
<type name="Pixbuf" c:type="GdkPixbuf*"/>
</return-value>
<parameters>
<parameter name="filename" transfer-ownership="none">
<doc xml:space="preserve">Name of file to load, in the GLib file name encoding</doc>
<type name="utf8" c:type="const char*"/>
</parameter>
<parameter name="width" transfer-ownership="none">
<doc xml:space="preserve">The width the image should have or -1 to not constrain the width</doc>
<type name="gint" c:type="int"/>
</parameter>
<parameter name="height" transfer-ownership="none">
<doc xml:space="preserve">The height the image should have or -1 to not constrain the height</doc>
<type name="gint" c:type="int"/>
</parameter>
<parameter name="preserve_aspect_ratio" transfer-ownership="none">
<doc xml:space="preserve">%TRUE to preserve the image's aspect ratio</doc>
<type name="gboolean" c:type="gboolean"/>
</parameter>
</parameters>
</constructor>
<constructor name="new_from_file_at_size"
c:identifier="gdk_pixbuf_new_from_file_at_size"
version="2.4"
throws="1">
<doc xml:space="preserve">Creates a new pixbuf by loading an image from a file.
The file format is detected automatically. If %NULL is returned, then
@error will be set. Possible errors are in the #GDK_PIXBUF_ERROR and
#G_FILE_ERROR domains.
The image will be scaled to fit in the requested size, preserving
the image's aspect ratio. Note that the returned pixbuf may be smaller
than @width x @height, if the aspect ratio requires it. To load
and image at the requested size, regardless of aspect ratio, use
gdk_pixbuf_new_from_file_at_scale().</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">A newly-created pixbuf with a reference count of 1, or
%NULL if any of several error conditions occurred: the file could not
be opened, there was no loader for the file's format, there was not
enough memory to allocate the image buffer, or the image file contained
invalid data.</doc>
<type name="Pixbuf" c:type="GdkPixbuf*"/>
</return-value>
<parameters>
<parameter name="filename" transfer-ownership="none">
<doc xml:space="preserve">Name of file to load, in the GLib file name encoding</doc>
<type name="utf8" c:type="const char*"/>
</parameter>
<parameter name="width" transfer-ownership="none">
<doc xml:space="preserve">The width the image should have or -1 to not constrain the width</doc>
<type name="gint" c:type="int"/>
</parameter>
<parameter name="height" transfer-ownership="none">
<doc xml:space="preserve">The height the image should have or -1 to not constrain the height</doc>
<type name="gint" c:type="int"/>
</parameter>
</parameters>
</constructor>
<constructor name="new_from_inline"
c:identifier="gdk_pixbuf_new_from_inline"
deprecated="1"
deprecated-version="2.32"
throws="1">
<doc xml:space="preserve">Create a #GdkPixbuf from a flat representation that is suitable for
storing as inline data in a program. This is useful if you want to
ship a program with images, but don't want to depend on any
external files.
gdk-pixbuf ships with a program called [gdk-pixbuf-csource][gdk-pixbuf-csource],
which allows for conversion of #GdkPixbufs into such a inline representation.
In almost all cases, you should pass the `--raw` option to
`gdk-pixbuf-csource`. A sample invocation would be:
|[
gdk-pixbuf-csource --raw --name=myimage_inline myimage.png
]|
For the typical case where the inline pixbuf is read-only static data,
you don't need to copy the pixel data unless you intend to write to
it, so you can pass %FALSE for @copy_pixels. (If you pass `--rle` to
`gdk-pixbuf-csource`, a copy will be made even if @copy_pixels is %FALSE,
so using this option is generally a bad idea.)
If you create a pixbuf from const inline data compiled into your
program, it's probably safe to ignore errors and disable length checks,
since things will always succeed:
|[
pixbuf = gdk_pixbuf_new_from_inline (-1, myimage_inline, FALSE, NULL);
]|
For non-const inline data, you could get out of memory. For untrusted
inline data located at runtime, you could have corrupt inline data in
addition.</doc>
<doc-deprecated xml:space="preserve">Use #GResource instead.</doc-deprecated>
<return-value transfer-ownership="full">
<doc xml:space="preserve">A newly-created #GdkPixbuf structure with a reference,
count of 1, or %NULL if an error occurred.</doc>
<type name="Pixbuf" c:type="GdkPixbuf*"/>
</return-value>
<parameters>
<parameter name="data_length" transfer-ownership="none">
<doc xml:space="preserve">Length in bytes of the @data argument or -1 to
disable length checks</doc>
<type name="gint" c:type="gint"/>
</parameter>
<parameter name="data" transfer-ownership="none">
<doc xml:space="preserve">Byte data containing a
serialized #GdkPixdata structure</doc>
<array length="0" zero-terminated="0" c:type="guint8*">
<type name="guint8" c:type="guint8"/>
</array>
</parameter>
<parameter name="copy_pixels" transfer-ownership="none">
<doc xml:space="preserve">Whether to copy the pixel data, or use direct pointers
@data for the resulting pixbuf</doc>
<type name="gboolean" c:type="gboolean"/>
</parameter>
</parameters>
</constructor>
<constructor name="new_from_resource"
c:identifier="gdk_pixbuf_new_from_resource"
version="2.26"
throws="1">
<doc xml:space="preserve">Creates a new pixbuf by loading an image from an resource.
The file format is detected automatically. If %NULL is returned, then
@error will be set.</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">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.</doc>
<type name="Pixbuf" c:type="GdkPixbuf*"/>
</return-value>
<parameters>
<parameter name="resource_path" transfer-ownership="none">
<doc xml:space="preserve">the path of the resource file</doc>
<type name="utf8" c:type="const char*"/>
</parameter>
</parameters>
</constructor>
<constructor name="new_from_resource_at_scale"
c:identifier="gdk_pixbuf_new_from_resource_at_scale"
version="2.26"
throws="1">
<doc xml:space="preserve">Creates a new pixbuf by loading an image from an resource.
The file format is detected automatically. If %NULL is returned, then
@error will be set.
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.</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">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.</doc>
<type name="Pixbuf" c:type="GdkPixbuf*"/>
</return-value>
<parameters>
<parameter name="resource_path" transfer-ownership="none">
<doc xml:space="preserve">the path of the resource file</doc>
<type name="utf8" c:type="const char*"/>
</parameter>
<parameter name="width" transfer-ownership="none">
<doc xml:space="preserve">The width the image should have or -1 to not constrain the width</doc>
<type name="gint" c:type="int"/>
</parameter>
<parameter name="height" transfer-ownership="none">
<doc xml:space="preserve">The height the image should have or -1 to not constrain the height</doc>
<type name="gint" c:type="int"/>
</parameter>
<parameter name="preserve_aspect_ratio" transfer-ownership="none">
<doc xml:space="preserve">%TRUE to preserve the image's aspect ratio</doc>
<type name="gboolean" c:type="gboolean"/>
</parameter>
</parameters>
</constructor>
<constructor name="new_from_stream"
c:identifier="gdk_pixbuf_new_from_stream"
version="2.14"
throws="1">
<doc xml:space="preserve">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 stream is not closed.</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">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.</doc>
<type name="Pixbuf" c:type="GdkPixbuf*"/>
</return-value>
<parameters>
<parameter name="stream" transfer-ownership="none">
<doc xml:space="preserve">a #GInputStream to load the pixbuf from</doc>
<type name="Gio.InputStream" c:type="GInputStream*"/>
</parameter>
<parameter name="cancellable"
transfer-ownership="none"
nullable="1"
allow-none="1">
<doc xml:space="preserve">optional #GCancellable object, %NULL to ignore</doc>
<type name="Gio.Cancellable" c:type="GCancellable*"/>
</parameter>
</parameters>
</constructor>
<constructor name="new_from_stream_at_scale"
c:identifier="gdk_pixbuf_new_from_stream_at_scale"
version="2.14"
throws="1">
<doc xml:space="preserve">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.</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">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.</doc>
<type name="Pixbuf" c:type="GdkPixbuf*"/>
</return-value>
<parameters>
<parameter name="stream" transfer-ownership="none">
<doc xml:space="preserve">a #GInputStream to load the pixbuf from</doc>
<type name="Gio.InputStream" c:type="GInputStream*"/>
</parameter>
<parameter name="width" transfer-ownership="none">
<doc xml:space="preserve">The width the image should have or -1 to not constrain the width</doc>
<type name="gint" c:type="gint"/>
</parameter>
<parameter name="height" transfer-ownership="none">
<doc xml:space="preserve">The height the image should have or -1 to not constrain the height</doc>
<type name="gint" c:type="gint"/>
</parameter>
<parameter name="preserve_aspect_ratio" transfer-ownership="none">
<doc xml:space="preserve">%TRUE to preserve the image's aspect ratio</doc>
<type name="gboolean" c:type="gboolean"/>
</parameter>
<parameter name="cancellable"
transfer-ownership="none"
nullable="1"
allow-none="1">
<doc xml:space="preserve">optional #GCancellable object, %NULL to ignore</doc>
<type name="Gio.Cancellable" c:type="GCancellable*"/>
</parameter>
</parameters>
</constructor>
<constructor name="new_from_stream_finish"
c:identifier="gdk_pixbuf_new_from_stream_finish"
version="2.24"
throws="1">
<doc xml:space="preserve">Finishes an asynchronous pixbuf creation operation started with
gdk_pixbuf_new_from_stream_async().</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">a #GdkPixbuf or %NULL on error. Free the returned
object with g_object_unref().</doc>
<type name="Pixbuf" c:type="GdkPixbuf*"/>
</return-value>
<parameters>
<parameter name="async_result" transfer-ownership="none">
<doc xml:space="preserve">a #GAsyncResult</doc>
<type name="Gio.AsyncResult" c:type="GAsyncResult*"/>
</parameter>
</parameters>
</constructor>
<constructor name="new_from_xpm_data"
c:identifier="gdk_pixbuf_new_from_xpm_data">
<doc xml:space="preserve">Creates a new pixbuf by parsing XPM data in memory. This data is commonly
the result of including an XPM file into a program's C source.</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">A newly-created pixbuf with a reference count of 1.</doc>
<type name="Pixbuf" c:type="GdkPixbuf*"/>
</return-value>
<parameters>
<parameter name="data" transfer-ownership="none">
<doc xml:space="preserve">Pointer to inline XPM data.</doc>
<array c:type="char**">
<type name="utf8" c:type="char*"/>
</array>
</parameter>
</parameters>
</constructor>
<function name="calculate_rowstride"
c:identifier="gdk_pixbuf_calculate_rowstride"
version="2.36.8">
<doc xml:space="preserve">Calculates the rowstride that an image created with those values would
have. This is useful for front-ends and backends that want to sanity
check image values without needing to create them.</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">the rowstride for the given values, or -1 in case of error.</doc>
<type name="gint" c:type="gint"/>
</return-value>
<parameters>
<parameter name="colorspace" transfer-ownership="none">
<doc xml:space="preserve">Color space for image</doc>
<type name="Colorspace" c:type="GdkColorspace"/>
</parameter>
<parameter name="has_alpha" transfer-ownership="none">
<doc xml:space="preserve">Whether the image should have transparency information</doc>
<type name="gboolean" c:type="gboolean"/>
</parameter>
<parameter name="bits_per_sample" transfer-ownership="none">
<doc xml:space="preserve">Number of bits per color sample</doc>
<type name="gint" c:type="int"/>
</parameter>
<parameter name="width" transfer-ownership="none">
<doc xml:space="preserve">Width of image in pixels, must be > 0</doc>
<type name="gint" c:type="int"/>
</parameter>
<parameter name="height" transfer-ownership="none">
<doc xml:space="preserve">Height of image in pixels, must be > 0</doc>
<type name="gint" c:type="int"/>
</parameter>
</parameters>
</function>
<function name="from_pixdata"
c:identifier="gdk_pixbuf_from_pixdata"
deprecated="1"
deprecated-version="2.32"
throws="1">
<doc xml:space="preserve">Converts a #GdkPixdata to a #GdkPixbuf. If @copy_pixels is %TRUE or
if the pixel data is run-length-encoded, the pixel data is copied into
newly-allocated memory; otherwise it is reused.</doc>
<doc-deprecated xml:space="preserve">Use #GResource instead.</doc-deprecated>
<return-value transfer-ownership="full">
<doc xml:space="preserve">a new #GdkPixbuf.</doc>
<type name="Pixbuf" c:type="GdkPixbuf*"/>
</return-value>
<parameters>
<parameter name="pixdata" transfer-ownership="none">
<doc xml:space="preserve">a #GdkPixdata to convert into a #GdkPixbuf.</doc>
<type name="Pixdata" c:type="const GdkPixdata*"/>
</parameter>
<parameter name="copy_pixels" transfer-ownership="none">
<doc xml:space="preserve">whether to copy raw pixel data; run-length encoded
pixel data is always copied.</doc>
<type name="gboolean" c:type="gboolean"/>
</parameter>
</parameters>
</function>
<function name="get_file_info"
c:identifier="gdk_pixbuf_get_file_info"
version="2.4">
<doc xml:space="preserve">Parses an image file far enough to determine its format and size.</doc>
<return-value transfer-ownership="none" nullable="1">
<doc xml:space="preserve">A #GdkPixbufFormat describing
the image format of the file or %NULL if the image format wasn't
recognized. The return value is owned by #GdkPixbuf and should
not be freed.</doc>
<type name="PixbufFormat" c:type="GdkPixbufFormat*"/>
</return-value>
<parameters>
<parameter name="filename" transfer-ownership="none">
<doc xml:space="preserve">The name of the file to identify.</doc>
<type name="utf8" c:type="const gchar*"/>
</parameter>
<parameter name="width"
direction="out"
caller-allocates="0"
transfer-ownership="full"
optional="1"
allow-none="1">
<doc xml:space="preserve">Return location for the width of the
image, or %NULL</doc>
<type name="gint" c:type="gint*"/>
</parameter>
<parameter name="height"
direction="out"
caller-allocates="0"
transfer-ownership="full"
optional="1"
allow-none="1">
<doc xml:space="preserve">Return location for the height of the
image, or %NULL</doc>
<type name="gint" c:type="gint*"/>
</parameter>
</parameters>
</function>
<function name="get_file_info_async"
c:identifier="gdk_pixbuf_get_file_info_async"
version="2.32">
<doc xml:space="preserve">Asynchronously parses an image file far enough to determine its
format and size.
For more details see gdk_pixbuf_get_file_info(), which is the synchronous
version of this function.
When the operation is finished, @callback will be called in the
main thread. You can then call gdk_pixbuf_get_file_info_finish() to
get the result of the operation.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<parameter name="filename" transfer-ownership="none">
<doc xml:space="preserve">The name of the file to identify</doc>
<type name="utf8" c:type="const gchar*"/>
</parameter>
<parameter name="cancellable"
transfer-ownership="none"
nullable="1"
allow-none="1">
<doc xml:space="preserve">optional #GCancellable object, %NULL to ignore</doc>
<type name="Gio.Cancellable" c:type="GCancellable*"/>
</parameter>
<parameter name="callback"
transfer-ownership="none"
nullable="1"
allow-none="1"
scope="async"
closure="3">
<doc xml:space="preserve">a #GAsyncReadyCallback to call when the file info is available</doc>
<type name="Gio.AsyncReadyCallback" c:type="GAsyncReadyCallback"/>
</parameter>
<parameter name="user_data"
transfer-ownership="none"
nullable="1"
allow-none="1">
<doc xml:space="preserve">the data to pass to the callback function</doc>
<type name="gpointer" c:type="gpointer"/>
</parameter>
</parameters>
</function>
<function name="get_file_info_finish"
c:identifier="gdk_pixbuf_get_file_info_finish"
version="2.32"
throws="1">
<doc xml:space="preserve">Finishes an asynchronous pixbuf parsing operation started with
gdk_pixbuf_get_file_info_async().</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">A #GdkPixbufFormat describing the image
format of the file or %NULL if the image format wasn't
recognized. The return value is owned by GdkPixbuf and should
not be freed.</doc>
<type name="PixbufFormat" c:type="GdkPixbufFormat*"/>
</return-value>
<parameters>
<parameter name="async_result" transfer-ownership="none">
<doc xml:space="preserve">a #GAsyncResult</doc>
<type name="Gio.AsyncResult" c:type="GAsyncResult*"/>
</parameter>
<parameter name="width"
direction="out"
caller-allocates="0"
transfer-ownership="full">
<doc xml:space="preserve">Return location for the width of the image, or %NULL</doc>
<type name="gint" c:type="gint*"/>
</parameter>
<parameter name="height"
direction="out"
caller-allocates="0"
transfer-ownership="full">
<doc xml:space="preserve">Return location for the height of the image, or %NULL</doc>
<type name="gint" c:type="gint*"/>
</parameter>
</parameters>
</function>
<function name="get_formats"
c:identifier="gdk_pixbuf_get_formats"
version="2.2">
<doc xml:space="preserve">Obtains the available information about the image formats supported
by GdkPixbuf.</doc>
<return-value transfer-ownership="container">
<doc xml:space="preserve">A list of
#GdkPixbufFormats describing the supported image formats. The list should
be freed when it is no longer needed, but the structures themselves are
owned by #GdkPixbuf and should not be freed.</doc>
<type name="GLib.SList" c:type="GSList*">
<type name="PixbufFormat"/>
</type>
</return-value>
</function>
<function name="new_from_stream_async"
c:identifier="gdk_pixbuf_new_from_stream_async"
version="2.24">
<doc xml:space="preserve">Creates a new pixbuf by asynchronously loading an image from an input stream.
For more details see gdk_pixbuf_new_from_stream(), which is the synchronous
version of this function.
When the operation is finished, @callback will be called in the main thread.
You can then call gdk_pixbuf_new_from_stream_finish() to get the result of the operation.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<parameter name="stream" transfer-ownership="none">
<doc xml:space="preserve">a #GInputStream from which to load the pixbuf</doc>
<type name="Gio.InputStream" c:type="GInputStream*"/>
</parameter>
<parameter name="cancellable"
transfer-ownership="none"
nullable="1"
allow-none="1">
<doc xml:space="preserve">optional #GCancellable object, %NULL to ignore</doc>
<type name="Gio.Cancellable" c:type="GCancellable*"/>
</parameter>
<parameter name="callback"
transfer-ownership="none"
nullable="1"
allow-none="1"
scope="async"
closure="3">
<doc xml:space="preserve">a #GAsyncReadyCallback to call when the pixbuf is loaded</doc>
<type name="Gio.AsyncReadyCallback" c:type="GAsyncReadyCallback"/>
</parameter>
<parameter name="user_data"
transfer-ownership="none"
nullable="1"
allow-none="1">
<doc xml:space="preserve">the data to pass to the callback function</doc>
<type name="gpointer" c:type="gpointer"/>
</parameter>
</parameters>
</function>
<function name="new_from_stream_at_scale_async"
c:identifier="gdk_pixbuf_new_from_stream_at_scale_async"
version="2.24">
<doc xml:space="preserve">Creates a new pixbuf by asynchronously loading an image from an input stream.
For more details see gdk_pixbuf_new_from_stream_at_scale(), which is the synchronous
version of this function.
When the operation is finished, @callback will be called in the main thread.
You can then call gdk_pixbuf_new_from_stream_finish() to get the result of the operation.</doc>
<return-value transfer-ownership="none">
<type name="none" c:type="void"/>
</return-value>
<parameters>
<parameter name="stream" transfer-ownership="none">
<doc xml:space="preserve">a #GInputStream from which to load the pixbuf</doc>
<type name="Gio.InputStream" c:type="GInputStream*"/>
</parameter>
<parameter name="width" transfer-ownership="none">
<doc xml:space="preserve">the width the image should have or -1 to not constrain the width</doc>
<type name="gint" c:type="gint"/>
</parameter>
<parameter name="height" transfer-ownership="none">
<doc xml:space="preserve">the height the image should have or -1 to not constrain the height</doc>
<type name="gint" c:type="gint"/>
</parameter>
<parameter name="preserve_aspect_ratio" transfer-ownership="none">
<doc xml:space="preserve">%TRUE to preserve the image's aspect ratio</doc>
<type name="gboolean" c:type="gboolean"/>
</parameter>
<parameter name="cancellable"
transfer-ownership="none"
nullable="1"
allow-none="1">
<doc xml:space="preserve">optional #GCancellable object, %NULL to ignore</doc>
<type name="Gio.Cancellable" c:type="GCancellable*"/>
</parameter>
<parameter name="callback"
transfer-ownership="none"
nullable="1"
allow-none="1"
scope="async"
closure="6">
<doc xml:space="preserve">a #GAsyncReadyCallback to call when the pixbuf is loaded</doc>
<type name="Gio.AsyncReadyCallback" c:type="GAsyncReadyCallback"/>
</parameter>
<parameter name="user_data"
transfer-ownership="none"
nullable="1"
allow-none="1">
<doc xml:space="preserve">the data to pass to the callback function</doc>
<type name="gpointer" c:type="gpointer"/>
</parameter>
</parameters>
</function>
<function name="save_to_stream_finish"
c:identifier="gdk_pixbuf_save_to_stream_finish"
version="2.24"
throws="1">
<doc xml:space="preserve">Finishes an asynchronous pixbuf save operation started with
gdk_pixbuf_save_to_stream_async().</doc>
<return-value transfer-ownership="none">
<doc xml:space="preserve">%TRUE if the pixbuf was saved successfully, %FALSE if an error was set.</doc>
<type name="gboolean" c:type="gboolean"/>
</return-value>
<parameters>
<parameter name="async_result" transfer-ownership="none">
<doc xml:space="preserve">a #GAsyncResult</doc>
<type name="Gio.AsyncResult" c:type="GAsyncResult*"/>
</parameter>
</parameters>
</function>
<method name="add_alpha" c:identifier="gdk_pixbuf_add_alpha">
<doc xml:space="preserve">Takes an existing pixbuf and adds an alpha channel to it.
If the existing pixbuf already had an alpha channel, the channel
values are copied from the original; otherwise, the alpha channel
is initialized to 255 (full opacity).
If @substitute_color is %TRUE, then the color specified by (@r, @g, @b) will be
assigned zero opacity. That is, if you pass (255, 255, 255) for the
substitute color, all white pixels will become fully transparent.</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">A newly-created pixbuf with a reference count of 1.</doc>
<type name="Pixbuf" c:type="GdkPixbuf*"/>
</return-value>
<parameters>
<instance-parameter name="pixbuf" transfer-ownership="none">
<doc xml:space="preserve">A #GdkPixbuf.</doc>
<type name="Pixbuf" c:type="const GdkPixbuf*"/>
</instance-parameter>
<parameter name="substitute_color" transfer-ownership="none">
<doc xml:space="preserve">Whether to set a color to zero opacity. If this
is %FALSE, then the (@r, @g, @b) arguments will be ignored.</doc>
<type name="gboolean" c:type="gboolean"/>
</parameter>
<parameter name="r" transfer-ownership="none">
<doc xml:space="preserve">Red value to substitute.</doc>
<type name="guint8" c:type="guchar"/>
</parameter>
<parameter name="g" transfer-ownership="none">
<doc xml:space="preserve">Green value to substitute.</doc>
<type name="guint8" c:type="guchar"/>
</parameter>
<parameter name="b" transfer-ownership="none">
<doc xml:space="preserve">Blue value to substitute.</doc>
<type name="guint8" c:type="guchar"/>
</parameter>
</parameters>
</method>
<method name="apply_embedded_orientation"
c:identifier="gdk_pixbuf_apply_embedded_orientation"
version="2.12">
<doc xml:space="preserve">Takes an existing pixbuf and checks for the presence of an
associated "orientation" option, which may be provided by the
jpeg loader (which reads the exif orientation tag) or the
tiff loader (which reads the tiff orientation tag, and
compensates it for the partial transforms performed by
libtiff). If an orientation option/tag is present, the
appropriate transform will be performed so that the pixbuf
is oriented correctly.</doc>
<return-value transfer-ownership="full">
<doc xml:space="preserve">A newly-created pixbuf, %NULL if
not enough memory could be allocated for it, or a reference to the
input pixbuf (with an increased reference count).</doc>
<type name="Pixbuf" c:type="GdkPixbuf*"/>
</return-value>
<parameters>
<instance-parameter name="src" transfer-ownership="none">
<doc xml:space="preserve">A #GdkPixbuf.</doc>
<type name="Pixbuf" c:type="GdkPixbuf*"/>
</instance-parameter>
</parameters>
</method>
<method name="composite" c:identifier="gdk_pixbuf_composite">
<doc xml:space="preserve">Creates a transformation of the source image @src by scaling by
@scale_x and @scale_y then translating by @offset_x and @offset_y.
This gives an image in the coordinates of the destination pixbuf.
The rectangle (@dest_x, @dest_y, @dest_width, @dest_height)
is then alpha blended onto the corresponding rectangle of the
original destination image.