glibmm 2.62.0

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Gio::LoadableIcon Class Reference

Extends the Icon interface and adds the ability to load icons from streams. More...

`#include <giomm/loadableicon.h>`

Inheritance diagram for Gio::LoadableIcon:
[legend]

## Public Member Functions
| LoadableIcon (LoadableIcon&& src) noexcept
LoadableIcon& | operator= (LoadableIcon&& src) noexcept
| ~LoadableIcon () noexcept override
GLoadableIcon* | gobj ()
| Provides access to the underlying C GObject. More...
const GLoadableIcon* | gobj () const
| Provides access to the underlying C GObject. More...
Glib::RefPtr< InputStream > | load (int size, Glib::ustring& type, const Glib::RefPtr< Cancellable >& cancellable)
| Loads a loadable icon. More...
Glib::RefPtr< InputStream > | load (int size, Glib::ustring& type)
| Non-cancellable version of load() More...
void | load_async (int size, const SlotAsyncReady& slot, const Glib::RefPtr< Cancellable >& cancellable)
| Loads an icon asynchronously. More...
void | load_async (int size, const SlotAsyncReady& slot)
| Non-cancellable version of load_async() More...
Public Member Functions inherited from Gio::Icon
| Icon (Icon&& src) noexcept
Icon& | operator= (Icon&& src) noexcept
| ~Icon () noexcept override
GIcon* | gobj ()
| Provides access to the underlying C GObject. More...
const GIcon* | gobj () const
| Provides access to the underlying C GObject. More...
guint | hash () const
| Gets a hash for an icon. More...
std::string | to_string () const
| 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. More...
bool | equal (const Glib::RefPtr< Icon >& other) const
Glib::VariantBase | serialize () const
| Serializes a Icon into a Variant. More...
Public Member Functions inherited from Glib::Interface
| Interface ()
| A Default constructor. More...
| Interface (Interface&& src) noexcept
Interface& | operator= (Interface&& src) noexcept
| Interface (const Glib::Interface_Class& interface_class)
| Called by constructors of derived classes. More...
| Interface (GObject* castitem)
| Called by constructors of derived classes. More...
| ~Interface () noexcept override
| Interface (const Interface&)=delete
Interface& | operator= (const Interface&)=delete
GObject* | gobj ()
const GObject* | gobj () const
Public Member Functions inherited from Glib::ObjectBase
| ObjectBase (const ObjectBase&)=delete
ObjectBase& | operator= (const ObjectBase&)=delete
void | set_property_value (const Glib::ustring& property_name, const Glib::ValueBase& value)
| You probably want to use a specific property_*() accessor method instead. More...
void | get_property_value (const Glib::ustring& property_name, Glib::ValueBase& value) const
| You probably want to use a specific property_*() accessor method instead. More...
template<class PropertyType >
void | set_property (const Glib::ustring& property_name, const PropertyType& value)
| You probably want to use a specific property_*() accessor method instead. More...
template<class PropertyType >
void | get_property (const Glib::ustring& property_name, PropertyType& value) const
| You probably want to use a specific property_*() accessor method instead. More...
void | connect_property_changed (const Glib::ustring& property_name, const sigc::slot< void >& slot)
| You can use the signal_changed() signal of the property proxy instead. More...
void | connect_property_changed (const Glib::ustring& property_name, sigc::slot< void >&& slot)
| You can use the signal_changed() signal of the property proxy instead. More...
sigc::connection | connect_property_changed_with_return (const Glib::ustring& property_name, const sigc::slot< void >& slot)
| You can use the signal_changed() signal of the property proxy instead. More...
sigc::connection | connect_property_changed_with_return (const Glib::ustring& property_name, sigc::slot< void >&& slot)
| You can use the signal_changed() signal of the property proxy instead. More...
void | freeze_notify ()
| Increases the freeze count on object. More...
void | thaw_notify ()
| Reverts the effect of a previous call to freeze_notify(). More...
virtual void | reference () const
| Increment the reference count for this object. More...
virtual void | unreference () const
| Decrement the reference count for this object. More...
GObject* | gobj ()
| Provides access to the underlying C GObject. More...
const GObject* | gobj () const
| Provides access to the underlying C GObject. More...
GObject* | gobj_copy () const
| Give a ref-ed copy to someone. Use for direct struct access. More...
Public Member Functions inherited from sigc::trackable
| trackable () noexcept
| trackable (const trackable &src) noexcept
| trackable (trackable &&src)
| ~trackable ()
void | add_destroy_notify_callback (void *data, func_destroy_notify func) const
void | notify_callbacks ()
trackable & | operator= (const trackable &src)
trackable & | operator= (trackable &&src)
void | remove_destroy_notify_callback (void *data) const

## Static Public Member Functions
static void | add_interface (GType gtype_implementer)
static GType | get_type ()
| Get the GType for this class, for use with the underlying GObject type system. More...
Static Public Member Functions inherited from Gio::Icon
static void | add_interface (GType gtype_implementer)
static GType | get_type ()
| Get the GType for this class, for use with the underlying GObject type system. More...
static Glib::RefPtr< Icon > | create (const std::string& str)
| Generate an Icon instance from str. More...
static Glib::RefPtr< Icon > | deserialize (const Glib::VariantBase& value)
| Deserializes a Icon previously serialized using g_icon_serialize(). More...

## Protected Member Functions
| LoadableIcon ()
| You should derive from this class to use it. More...
Protected Member Functions inherited from Gio::Icon
| Icon ()
| You should derive from this class to use it. More...
Protected Member Functions inherited from Glib::ObjectBase
| ObjectBase ()
| This default constructor is called implicitly from the constructor of user-derived classes, even if, for instance, Gtk::Button calls a different ObjectBase constructor. More...
| ObjectBase (const char* custom_type_name)
| A derived constructor always overrides this choice. More...
| ObjectBase (const std::type_info& custom_type_info)
| This constructor is a special feature to allow creation of derived types on the fly, without having to use g_object_new() manually. More...
| ObjectBase (ObjectBase&& src) noexcept
ObjectBase& | operator= (ObjectBase&& src) noexcept
virtual | ~ObjectBase () noexcept=0
void | initialize (GObject* castitem)
void | initialize_move (GObject* castitem, Glib::ObjectBase* previous_wrapper)

## Related Functions
(Note that these are not member functions.)
Glib::RefPtr< Gio::LoadableIcon > | wrap (GLoadableIcon* object, bool take_copy=false)
| A Glib::wrap() method for this object. More...
Related Functions inherited from Gio::Icon
Glib::RefPtr< Gio::Icon > | wrap (GIcon* object, bool take_copy=false)
| A Glib::wrap() method for this object. More...

## Additional Inherited Members
Public Types inherited from sigc::trackable
typedef internal::func_destroy_notify | func_destroy_notify

## Detailed Description

Extends the Icon interface and adds the ability to load icons from streams.

Since glibmm 2.16:

## Constructor & Destructor Documentation

Gio::LoadableIcon::LoadableIcon | ( |  | ) |
| protected

You should derive from this class to use it.

Gio::LoadableIcon::LoadableIcon | ( | LoadableIcon&& | src | ) |
| noexcept

Gio::LoadableIcon::~LoadableIcon | ( |  | ) |
| override noexcept

## Member Function Documentation

static void Gio::LoadableIcon::add_interface | ( | GType | gtype_implementer | ) |
| static

static GType Gio::LoadableIcon::get_type | ( |  | ) |
| static

Get the GType for this class, for use with the underlying GObject type system.

GLoadableIcon* Gio::LoadableIcon::gobj | ( |  | ) |
| inline

Provides access to the underlying C GObject.

const GLoadableIcon* Gio::LoadableIcon::gobj | ( |  | ) | const
| inline

Provides access to the underlying C GObject.

Glib::RefPtr<InputStream> Gio::LoadableIcon::load | ( | int | size,
|  | Glib::ustring& | type,
|  | const Glib::RefPtr< Cancellable >& | cancellable
| ) |  |

Loads a loadable icon.

For the asynchronous version of this function, see load_async().

Parameters

  size | an integer.
  type | a location to store the type of the loaded icon
  cancellable | a Cancellable object

Returns
  a InputStream to read the icon from.

Glib::RefPtr<InputStream> Gio::LoadableIcon::load | ( | int | size,
|  | Glib::ustring& | type
| ) |  |

Non-cancellable version of load()

void Gio::LoadableIcon::load_async | ( | int | size,
|  | const SlotAsyncReady& | slot,
|  | const Glib::RefPtr< Cancellable >& | cancellable
| ) |  |

Loads an icon asynchronously.

To finish this function, see load_finish(). For the synchronous, blocking version of this function, see load().

Parameters

  size | an integer.
  cancellable | a Cancellable object
  slot | a function to call when the request is satisfied

void Gio::LoadableIcon::load_async | ( | int | size,
|  | const SlotAsyncReady& | slot
| ) |  |

Non-cancellable version of load_async()

LoadableIcon& Gio::LoadableIcon::operator= | ( | LoadableIcon&& | src | ) |
| noexcept

## Friends And Related Function Documentation

Glib::RefPtr< Gio::LoadableIcon > wrap | ( | GLoadableIcon * | object,
|  | bool | take_copy = `false`
| ) |  |
| related

A Glib::wrap() method for this object.

Parameters

  object | The C instance.
  take_copy | False if the result should take ownership of the C instance. True if it should take a new copy or ref.

Returns
  A C++ instance that wraps this C instance.