Sets our main struct and passes it to the parent class.
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.
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().
Creates a new #GdkPixbuf out of in-memory image data. Currently only RGB images with 8 bits per sample are supported.
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.
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.
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.
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.
Creates a new pixbuf by loading an image from an input stream.
Creates a new pixbuf by loading an image from an input stream.
Finishes an asynchronous pixbuf creation operation started with gdk_pixbuf_new_from_stream_async().
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.
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).
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.
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 composited onto the corresponding rectangle of the original destination image.
Creates a transformation of the source image @src by scaling by @scale_x and @scale_y then translating by @offset_x and @offset_y, then composites the rectangle (@dest_x ,@dest_y, @dest_width, @dest_height) of the resulting image with a checkboard of the colors @color1 and @color2 and renders it onto the destination image.
Creates a new #GdkPixbuf by scaling @src to @dest_width x @dest_height and compositing the result with a checkboard of colors @color1 and @color2.
Creates a new #GdkPixbuf with a copy of the information in the specified @pixbuf. Note that this does not copy the options set on the original #GdkPixbuf, use gdk_pixbuf_copy_options() for this.
Copies a rectangular area from @src_pixbuf to @dest_pixbuf. Conversion of pixbuf formats is done automatically.
Copy the key/value pair options attached to a #GdkPixbuf to another. This is useful to keep original metadata after having manipulated a file. However be careful to remove metadata which you've already applied, such as the "orientation" option after rotating the image.
Clears a pixbuf to the given RGBA value, converting the RGBA value into the pixbuf's pixel format. The alpha will be ignored if the pixbuf doesn't have an alpha channel.
Flips a pixbuf horizontally or vertically and returns the result in a new pixbuf.
Queries the number of bits per color sample in a pixbuf.
Returns the length of the pixel data, in bytes.
Queries the color space of a pixbuf.
Queries whether a pixbuf has an alpha channel (opacity information).
Queries the height of a pixbuf.
Queries the number of channels of a pixbuf.
Looks up @key in the list of options that may have been attached to the @pixbuf when it was loaded, or that may have been attached by another function using gdk_pixbuf_set_option().
Returns a #GHashTable with a list of all the options that may have been attached to the @pixbuf when it was loaded, or that may have been attached by another function using gdk_pixbuf_set_option().
Get the main Gtk struct
Queries a pointer to the pixel data of a pixbuf.
Queries a pointer to the pixel data of a pixbuf.
Queries the rowstride of a pixbuf, which is the number of bytes between the start of a row and the start of the next row.
the main Gtk struct as a void*
Queries the width of a pixbuf.
Creates a new pixbuf which represents a sub-region of @src_pixbuf. The new pixbuf shares its pixels with the original pixbuf, so writing to one affects both. The new pixbuf holds a reference to @src_pixbuf, so @src_pixbuf will not be finalized until the new pixbuf is finalized.
Return: A new reference to a read-only copy of the pixel data. Note that for mutable pixbufs, this function will incur a one-time copy of the pixel data for conversion into the returned #GBytes.
Returns a read-only pointer to the raw pixel data; must not be modified. This function allows skipping the implicit copy that must be made if gdk_pixbuf_get_pixels() is called on a read-only pixbuf.
Remove the key/value pair option attached to a #GdkPixbuf.
Rotates a pixbuf by a multiple of 90 degrees, and returns the result in a new pixbuf.
Modifies saturation and optionally pixelates @src, placing the result in @dest. @src and @dest may be the same pixbuf with no ill effects. If @saturation is 1.0 then saturation is not changed. If it's less than 1.0, saturation is reduced (the image turns toward grayscale); if greater than 1.0, saturation is increased (the image gets more vivid colors). If @pixelate is %TRUE, then pixels are faded in a checkerboard pattern to create a pixelated image. @src and @dest must have the same image format, size, and rowstride.
Saves pixbuf to a new buffer in format @type, which is currently "jpeg", "tiff", "png", "ico" or "bmp". See gdk_pixbuf_save_to_buffer() for more details.
Saves pixbuf to a callback in format @type, which is currently "jpeg", "png", "tiff", "ico" or "bmp". If @error is set, %FALSE will be returned. See gdk_pixbuf_save_to_callback () for more details.
Saves @pixbuf to an output stream.
Saves @pixbuf to an output stream asynchronously.
Saves pixbuf to a file in @type, which is currently "jpeg", "png", "tiff", "ico" or "bmp". If @error is set, %FALSE will be returned. See gdk_pixbuf_save () for more details.
Creates a transformation of the source image @src by scaling by @scale_x and @scale_y then translating by @offset_x and @offset_y, then renders the rectangle (@dest_x, @dest_y, @dest_width, @dest_height) of the resulting image onto the destination image replacing the previous contents.
Create a new #GdkPixbuf containing a copy of @src scaled to @dest_width x @dest_height. Leaves @src unaffected. @interp_type should be #GDK_INTERP_NEAREST if you want maximum speed (but when scaling down #GDK_INTERP_NEAREST is usually unusably ugly). The default @interp_type should be #GDK_INTERP_BILINEAR which offers reasonable quality and speed.
Attaches a key/value pair as an option to a #GdkPixbuf. If @key already exists in the list of options attached to @pixbuf, the new value is ignored and %FALSE is returned.
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.
Parses an image file far enough to determine its format and size.
Asynchronously parses an image file far enough to determine its format and size.
Finishes an asynchronous pixbuf parsing operation started with gdk_pixbuf_get_file_info_async().
Obtains the available information about the image formats supported by GdkPixbuf.
Creates a new pixbuf by loading an image from an resource.
Creates a new pixbuf by loading an image from an resource.
Creates a new pixbuf by asynchronously loading an image from an input stream.
Creates a new pixbuf by asynchronously loading an image from an input stream.
Finishes an asynchronous pixbuf save operation started with gdk_pixbuf_save_to_stream_async().
the main Gtk struct
the main Gtk struct
Get the main Gtk struct
the main Gtk struct as a void*
Gets a D Object from the objects table of associations.
The notify signal is emitted on an object when one of its properties has been changed. Note that getting this signal doesn't guarantee that the value of the property has actually changed, it may also be emitted when the setter for the property is called to reinstate the previous value.
Find the #GParamSpec with the given name for an interface. Generally, the interface vtable passed in as @g_iface will be the default vtable from g_type_default_interface_ref(), or, if you know the interface has already been loaded, g_type_default_interface_peek().
Add a property to an interface; this is only useful for interfaces that are added to GObject-derived types. Adding a property to an interface forces all objects classes with that interface to have a compatible property. The compatible property could be a newly created #GParamSpec, but normally g_object_class_override_property() will be used so that the object class only needs to provide an implementation and inherits the property description, default value, bounds, and so forth from the interface property.
Lists the properties of an interface.Generally, the interface vtable passed in as @g_iface will be the default vtable from g_type_default_interface_ref(), or, if you know the interface has already been loaded, g_type_default_interface_peek().
Increases the reference count of the object by one and sets a callback to be called when all other references to the object are dropped, or when this is already the last reference to the object and another reference is established.
Adds a weak reference from weak_pointer to @object to indicate that the pointer located at @weak_pointer_location is only valid during the lifetime of @object. When the @object is finalized, @weak_pointer will be set to %NULL.
Creates a binding between @source_property on @source and @target_property on @target. Whenever the @source_property is changed the @target_property is updated using the same value. For instance:
Complete version of g_object_bind_property().
Creates a binding between @source_property on @source and @target_property on @target, allowing you to set the transformation functions to be used by the binding.
This is a variant of g_object_get_data() which returns a 'duplicate' of the value. @dup_func defines the meaning of 'duplicate' in this context, it could e.g. take a reference on a ref-counted object.
This is a variant of g_object_get_qdata() which returns a 'duplicate' of the value. @dup_func defines the meaning of 'duplicate' in this context, it could e.g. take a reference on a ref-counted object.
This function is intended for #GObject implementations to re-enforce a floating[floating-ref] object reference. Doing this is seldom required: all #GInitiallyUnowneds are created with a floating reference which usually just needs to be sunken by calling g_object_ref_sink().
Increases the freeze count on @object. If the freeze count is non-zero, the emission of "notify" signals on @object is stopped. The signals are queued until the freeze count is decreased to zero. Duplicate notifications are squashed so that at most one #GObject::notify signal is emitted for each property modified while the object is frozen.
Gets a named field from the objects table of associations (see g_object_set_data()).
Gets a property of an object. @value must have been initialized to the expected type of the property (or a type to which the expected type can be transformed) using g_value_init().
This function gets back user data pointers stored via g_object_set_qdata().
Gets properties of an object.
Checks whether @object has a floating[floating-ref] reference.
Emits a "notify" signal for the property @property_name on @object.
Emits a "notify" signal for the property specified by @pspec on @object.
Increases the reference count of @object.
Increase the reference count of @object, and possibly remove the floating[floating-ref] reference, if @object has a floating reference.
Removes a reference added with g_object_add_toggle_ref(). The reference count of the object is decreased by one.
Removes a weak reference from @object that was previously added using g_object_add_weak_pointer(). The @weak_pointer_location has to match the one used with g_object_add_weak_pointer().
Compares the user data for the key @key on @object with @oldval, and if they are the same, replaces @oldval with @newval.
Compares the user data for the key @quark on @object with @oldval, and if they are the same, replaces @oldval with @newval.
Releases all references to other objects. This can be used to break reference cycles.
Each object carries around a table of associations from strings to pointers. This function lets you set an association.
Like g_object_set_data() except it adds notification for when the association is destroyed, either by setting it to a different value or when the object is destroyed.
Sets a property on an object.
This sets an opaque, named pointer on an object. The name is specified through a #GQuark (retrived e.g. via g_quark_from_static_string()), and the pointer can be gotten back from the @object with g_object_get_qdata() until the @object is finalized. Setting a previously set user data pointer, overrides (frees) the old pointer set, using #NULL as pointer essentially removes the data stored.
This function works like g_object_set_qdata(), but in addition, a void (*destroy) (gpointer) function may be specified which is called with @data as argument when the @object is finalized, or the data is being overwritten by a call to g_object_set_qdata() with the same @quark.
Sets properties on an object.
Remove a specified datum from the object's data associations, without invoking the association's destroy handler.
This function gets back user data pointers stored via g_object_set_qdata() and removes the @data from object without invoking its destroy() function (if any was set). Usually, calling this function is only required to update user data pointers with a destroy notifier, for example: |[<!-- language="C" --> void object_add_to_user_list (GObject *object, const gchar *new_string) { // the quark, naming the object data GQuark quark_string_list = g_quark_from_static_string ("my-string-list"); // retrive the old string list GList *list = g_object_steal_qdata (object, quark_string_list);
Reverts the effect of a previous call to g_object_freeze_notify(). The freeze count is decreased on @object and when it reaches zero, queued "notify" signals are emitted.
Decreases the reference count of @object. When its reference count drops to 0, the object is finalized (i.e. its memory is freed).
This function essentially limits the life time of the @closure to the life time of the object. That is, when the object is finalized, the @closure is invalidated by calling g_closure_invalidate() on it, in order to prevent invocations of the closure with a finalized (nonexisting) object. Also, g_object_ref() and g_object_unref() are added as marshal guards to the @closure, to ensure that an extra reference count is held on @object during invocation of the @closure. Usually, this function will be called on closures that use this @object as closure data.
Adds a weak reference callback to an object. Weak references are used for notification when an object is finalized. They are called "weak references" because they allow you to safely hold a pointer to an object without calling g_object_ref() (g_object_ref() adds a strong reference, that is, forces the object to stay alive).
Removes a weak reference callback to an object.
Clears a reference to a #GObject.
Get the main Gtk struct
the main Gtk struct as a void*
Deserializes a #GIcon previously serialized using g_icon_serialize().
Gets a hash for an icon.
Checks if two icons are equal.
Serializes a #GIcon into a #GVariant. An equivalent #GIcon can be retrieved back by calling g_icon_deserialize() on the returned value. As serialization will avoid using raw icon data when possible, it only makes sense to transfer the #GVariant between processes on the same machine, (as opposed to over the network), and within the same file system namespace.
Generates a textual representation of @icon that can be used for serialization such as when passing @icon to a different process or saving it to persistent storage. Use g_icon_new_for_string() to get @icon back from the returned string.
Get the main Gtk struct
the main Gtk struct as a void*
Loads a loadable icon. For the asynchronous version of this function, see g_loadable_icon_load_async().
Loads an icon asynchronously. To finish this function, see g_loadable_icon_load_finish(). For the synchronous, blocking version of this function, see g_loadable_icon_load().
Finishes an asynchronous icon load started in g_loadable_icon_load_async().
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).