ContentProvider#

class ContentProvider(**properties: Any)#

Superclasses: Object

A GdkContentProvider is used to provide content for the clipboard or for drag-and-drop operations in a number of formats.

To create a GdkContentProvider, use new_for_value or new_for_bytes.

GDK knows how to handle common text and image formats out-of-the-box. See ContentSerializer and ContentDeserializer if you want to add support for application-specific data formats.

Constructors#

class ContentProvider
classmethod new_for_bytes(mime_type: str, bytes: Bytes) → ContentProvider#

Create a content provider that provides the given bytes as data for the given mime_type.

Parameters:

  • mime_type – the mime type

  • bytes – a GBytes with the data for mime_type

classmethod new_for_value(value: Value) → ContentProvider#

Create a content provider that provides the given value.

Parameters:

value – a GValue

classmethod new_union(providers: list[ContentProvider] | None = None) → ContentProvider#

Creates a content provider that represents all the given providers.

Whenever data needs to be written, the union provider will try the given providers in the given order and the first one supporting a format will be chosen to provide it.

This allows an easy way to support providing data in different formats. For example, an image may be provided by its file and by the image contents with a call such as

gdk_content_provider_new_union ((GdkContentProvider *[2]) {
                                  gdk_content_provider_new_typed (G_TYPE_FILE, file),
                                  gdk_content_provider_new_typed (GDK_TYPE_TEXTURE, texture)
                                }, 2);
Parameters:

providers – The GdkContentProviders to present the union of

Methods#

class ContentProvider
content_changed() → None#

Emits the ::content-changed signal.

do_attach_clipboard(self, clipboard: Clipboard) → None#
Parameters:

clipboard

do_content_changed(self) → None#
do_detach_clipboard(self, clipboard: Clipboard) → None#
Parameters:

clipboard

do_get_value(self) → Tuple[bool, Value]#
do_write_mime_type_async(self, mime_type: str, stream: OutputStream, io_priority: int, cancellable: Cancellable | None = None, callback: Callable[[Object | None, AsyncResult, Any], None] | None = None, user_data: Any = None) → None#
Parameters:

  • mime_type

  • stream

  • io_priority

  • cancellable

  • callback

  • user_data

do_write_mime_type_finish(self, result: AsyncResult) → bool#
Parameters:

result

get_value() → Tuple[bool, Value]#

Gets the contents of provider stored in value.

The value will have been initialized to the GType the value should be provided in. This given GType does not need to be listed in the formats returned by ref_formats. However, if the given GType is not supported, this operation can fail and G_IO_ERROR_NOT_SUPPORTED will be reported.

write_mime_type_async(mime_type: str, stream: OutputStream, io_priority: int, cancellable: Cancellable | None = None, callback: Callable[[Object | None, AsyncResult, Any], None] | None = None, user_data: Any = None) → None#

Asynchronously writes the contents of provider to stream in the given mime_type.

The given mime type does not need to be listed in the formats returned by ref_formats. However, if the given GType is not supported, G_IO_ERROR_NOT_SUPPORTED will be reported.

The given stream will not be closed.

Parameters:

  • mime_type – the mime type to provide the data in

  • stream – the GOutputStream to write to

  • io_priority – I/O priority of the request.

  • cancellable – optional GCancellable object, None to ignore.

  • callback – callback to call when the request is satisfied

  • user_data – the data to pass to callback function

write_mime_type_finish(result: AsyncResult) → bool#

Finishes an asynchronous write operation.

See write_mime_type_async.

Parameters:

result – a GAsyncResult

Properties#

class ContentProvider
props.formats: ContentFormats#

The type of the None singleton.

props.storable_formats: ContentFormats#

The type of the None singleton.

Signals#

class ContentProvider.signals
content_changed() → None#

The type of the None singleton.

Virtual Methods#

class ContentProvider
do_attach_clipboard(clipboard: Clipboard) → None#

The type of the None singleton.

Parameters:

clipboard

do_content_changed() → None#

Emits the ::content-changed signal.

do_detach_clipboard(clipboard: Clipboard) → None#

The type of the None singleton.

Parameters:

clipboard

do_get_value() → Tuple[bool, Value]#

Gets the contents of provider stored in value.

The value will have been initialized to the GType the value should be provided in. This given GType does not need to be listed in the formats returned by ref_formats. However, if the given GType is not supported, this operation can fail and G_IO_ERROR_NOT_SUPPORTED will be reported.

do_ref_formats() → ContentFormats#

Gets the formats that the provider can provide its current contents in.

do_ref_storable_formats() → ContentFormats#

Gets the formats that the provider suggests other applications to store the data in.

An example of such an application would be a clipboard manager.

This can be assumed to be a subset of ref_formats.

do_write_mime_type_async(mime_type: str, stream: OutputStream, io_priority: int, cancellable: Cancellable | None = None, callback: Callable[[Object | None, AsyncResult, Any], None] | None = None, user_data: Any = None) → None#

Asynchronously writes the contents of provider to stream in the given mime_type.

The given mime type does not need to be listed in the formats returned by ref_formats. However, if the given GType is not supported, G_IO_ERROR_NOT_SUPPORTED will be reported.

The given stream will not be closed.

Parameters:

  • mime_type – the mime type to provide the data in

  • stream – the GOutputStream to write to

  • io_priority – I/O priority of the request.

  • cancellable – optional GCancellable object, None to ignore.

  • callback – callback to call when the request is satisfied

  • user_data – the data to pass to callback function

do_write_mime_type_finish(result: AsyncResult) → bool#

Finishes an asynchronous write operation.

See write_mime_type_async.

Parameters:

result – a GAsyncResult

Fields#

class ContentProvider
parent#