Gly.Loader¶

Subclasses:: None

Methods¶

Inherited:: GObject.Object (37)
Structs:: GObject.ObjectClass (5)

class	`get_mime_types` ()
class	`get_mime_types_async` (cancellable, callback, *user_data)
class	`get_mime_types_finish` (result)
class	`new` (file)
class	`new_for_bytes` (bytes)
class	`new_for_stream` (stream)
	`load` ()
	`load_async` (cancellable, callback, *user_data)
	`load_finish` (result)
	`set_accepted_memory_formats` (memory_format_selection)
	`set_apply_transformations` (apply_transformations)
	`set_sandbox_selector` (sandbox_selector)

Virtual Methods¶

Inherited:: GObject.Object (7)

Properties¶

Name	Type	Flags
`apply-transformation`	`bool`	r/w
`bytes`	`GLib.Bytes`	r/w/co
`cancellable`	`Gio.Cancellable`	r/w
`file`	`Gio.File`	r/w/co
`memory-format-selection`	`Gly.MemoryFormatSelection`	r/w
`sandbox-selector`	`Gly.SandboxSelector`	r/w
`stream`	`Gio.InputStream`	r/w/co

Signals¶

Inherited:: GObject.Object (1)

Fields¶

Inherited:: GObject.Object (1)

Class Details¶

class Gly.Loader(**kwargs)¶

Bases:: GObject.Object
Abstract:: No
Structure:: Gly.LoaderClass

[class`Loader`] prepares loading an image.

The following example shows how to obtain a Gdk.Texture. It uses GlyGtk4 for this.

```c #include <glycin-gtk4.h>

file = Gio.File.new_for_path (“test.png”); loader = Gly.Loader.new (file); image = Gly.Loader.load (loader, None); if (image) { frame = Gly.Image.next_frame (image, None); if (frame) { texture = gly_gtk_frame_get_texture (frame); g_print (“Image height: %d\n”, gdk_texture_get_height (texture)); image_widget = gtk_image_new_from_paintable (GDK_PAINTABLE (texture)); } } ```

Added in version 2.0.

classmethod get_mime_types()¶

Returns:: List of supported MIME types
Return type:: [str]

Returns a list of MIME types currently supported for loading images.

This list is generated from the config on first use of a loader or call of this function and cached afterwards. Hence, the first call can be blocking.

Added in version 2.0.

classmethod get_mime_types_async(cancellable, callback, *user_data)¶

Parameters:

cancellable (Gio.Cancellable or None)
callback (Gio.AsyncReadyCallback or None)
user_data (object or None) – user data to pass to callback

Async variant of [func`Loader`.get_mime_types]

Added in version 2.0.

classmethod get_mime_types_finish(result)¶

Parameters:: result (Gio.AsyncResult) – A GAsyncResult
Raises:: GLib.Error
Returns:: Mime types.
Return type:: [str]

Finishes the [func`Loader`.get_mime_types_async] call.

Added in version 2.0.

classmethod new(file)¶

Parameters:: file (Gio.File) – A file from which to load the image data
Returns:: a new [class`Loader`]
Return type:: Gly.Loader

Creates a new loader for a file.

Added in version 2.0.

classmethod new_for_bytes(bytes)¶

Parameters:: bytes (GLib.Bytes) – Data from which to load the image
Returns:: a new [class`Loader`]
Return type:: Gly.Loader

Creates a new loader for bytes.

Added in version 2.0.

classmethod new_for_stream(stream)¶

Parameters:: stream (Gio.InputStream) – A stream from which to load the image data
Returns:: a new [class`Loader`]
Return type:: Gly.Loader

Creates a new loader for a stream.

Added in version 2.0.

load()¶

Raises:: GLib.Error
Returns:: a new [class`Image`] on success, or NULL with error filled in
Return type:: Gly.Image

Synchronously loads an image and returns an [class`Image`] when successful.

Added in version 2.0.

load_async(cancellable, callback, *user_data)¶

Parameters:

cancellable (Gio.Cancellable or None) – A [class`Gio`.Cancellable] to cancel the operation
callback (Gio.AsyncReadyCallback or None) – A callback to call when the operation is complete
user_data (object or None) – Data to pass to callback

Asynchronous version of [method`Loader`.load].

Added in version 2.0.

load_finish(result)¶

Parameters:: result (Gio.AsyncResult) – A GAsyncResult
Raises:: GLib.Error
Returns:: Loaded image.
Return type:: Gly.Image

Finishes the [method`Loader`.load_async] call.

Added in version 2.0.

set_accepted_memory_formats(memory_format_selection)¶

Parameters:: memory_format_selection (Gly.MemoryFormatSelection) – Accepted memory formats

Sets which memory formats can be returned by the loader

If the memory format doesn’t match one of the selected formats, the format will be transformed into the best suitable format selected.

Added in version 2.0.

set_apply_transformations(apply_transformations)¶

Parameters:: apply_transformations (bool)

Set whether to apply transformations to texture

When enabled, transformations like image orientation are applied to the texture data.

This option is enabled by default.

Added in version 2.0.

set_sandbox_selector(sandbox_selector)¶

Parameters:: sandbox_selector (Gly.SandboxSelector) – Method by which the sandbox mechanism is selected

Selects which sandbox mechanism should be used. The default without calling this function is [enum`SandboxSelector`]``.AUTO``.

Added in version 2.0.

Property Details¶

Gly.Loader.props.apply_transformation¶

Name:: apply-transformation
Type:: bool
Default Value:: False
Flags:: READABLE, WRITABLE

Gly.Loader.props.bytes¶

Name:: bytes
Type:: GLib.Bytes
Default Value:: None
Flags:: READABLE, WRITABLE, CONSTRUCT_ONLY

Gly.Loader.props.cancellable¶

Name:: cancellable
Type:: Gio.Cancellable
Default Value:: None
Flags:: READABLE, WRITABLE

Gly.Loader.props.file¶

Name:: file
Type:: Gio.File
Default Value:: None
Flags:: READABLE, WRITABLE, CONSTRUCT_ONLY

Gly.Loader.props.memory_format_selection¶

Name:: memory-format-selection
Type:: Gly.MemoryFormatSelection
Default Value:: 0
Flags:: READABLE, WRITABLE

Gly.Loader.props.sandbox_selector¶

Name:: sandbox-selector
Type:: Gly.SandboxSelector
Default Value:: Gly.SandboxSelector.AUTO
Flags:: READABLE, WRITABLE

Gly.Loader.props.stream¶

Name:: stream
Type:: Gio.InputStream
Default Value:: None
Flags:: READABLE, WRITABLE, CONSTRUCT_ONLY