gtkmm: Gdk::Cursor Class Reference

gtkmm 4.4.0

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Public Member Functions | Static Public Member Functions | Related Functions | List of all members
Gdk::Cursor Class Reference

This represents a cursor. More...

`#include <gdkmm/cursor.h>`

Inheritance diagram for Gdk::Cursor:
[legend]

## Public Member Functions
| Cursor (Cursor && src) noexcept
Cursor & | operator= (Cursor && src) noexcept
| ~Cursor () noexcept override
GdkCursor * | gobj ()
| Provides access to the underlying C GObject. More...
const GdkCursor * | gobj () const
| Provides access to the underlying C GObject. More...
GdkCursor * | gobj_copy ()
| Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. More...
Glib::RefPtr< Cursor > | get_fallback ()
| Returns the fallback for this cursor. More...
Glib::RefPtr< const Cursor > | get_fallback () const
| Returns the fallback for this cursor. More...
Glib::ustring | get_name () const
| Returns the name of the cursor. More...
Glib::RefPtr< Texture > | get_texture ()
| Returns the texture for the cursor. More...
Glib::RefPtr< const Texture > | get_texture () const
| Returns the texture for the cursor. More...
int | get_hotspot_x () const
| Returns the horizontal offset of the hotspot. More...
int | get_hotspot_y () const
| Returns the vertical offset of the hotspot. More...
Glib::PropertyProxy_ReadOnly< Glib::RefPtr< Cursor > > | property_fallback () const
| Cursor to fall back to if this cursor cannot be displayed. More...
Glib::PropertyProxy_ReadOnly< int > | property_hotspot_x () const
| X position of the cursor hotspot in the cursor image. More...
Glib::PropertyProxy_ReadOnly< int > | property_hotspot_y () const
| Y position of the cursor hotspot in the cursor image. More...
Glib::PropertyProxy_ReadOnly< Glib::ustring > | property_name () const
| Name of this this cursor. More...
Glib::PropertyProxy_ReadOnly< Glib::RefPtr< Texture > > | property_texture () const
| The texture displayed by this cursor. More...
Public Member Functions inherited from Glib::Object
| Object (const Object &)=delete
Object & | operator= (const Object &)=delete
| Object (Object &&src) noexcept
Object & | operator= (Object &&src) noexcept
void * | get_data (const QueryQuark &key)
void | set_data (const Quark &key, void *data)
void | set_data (const Quark &key, void *data, DestroyNotify notify)
void | remove_data (const QueryQuark &quark)
void * | steal_data (const QueryQuark &quark)
Glib::RefPtr< Glib::Object > | wrap (GObject *object, bool take_copy=false)
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)
void | get_property_value (const Glib::ustring &property_name, Glib::ValueBase &value) const
void | set_property (const Glib::ustring &property_name, const PropertyType &value)
void | get_property (const Glib::ustring &property_name, PropertyType &value) const
PropertyType | get_property (const Glib::ustring &property_name) const
sigc::connection | connect_property_changed (const Glib::ustring &property_name, const sigc::slot< void()> &slot)
sigc::connection | connect_property_changed (const Glib::ustring &property_name, sigc::slot< void()> &&slot)
void | freeze_notify ()
void | thaw_notify ()
virtual void | reference () const
virtual void | unreference () const
GObject * | gobj ()
const GObject * | gobj () const
GObject * | gobj_copy () const
Public Member Functions inherited from sigc::trackable
| trackable () noexcept
| trackable (const trackable &src) noexcept
| trackable (trackable &&src) noexcept
| ~trackable ()
void | add_destroy_notify_callback (notifiable *data, func_destroy_notify func) const
void | notify_callbacks ()
trackable & | operator= (const trackable &src)
trackable & | operator= (trackable &&src) noexcept
void | remove_destroy_notify_callback (notifiable *data) const

## Static Public Member Functions
static GType | get_type ()
| Get the GType for this class, for use with the underlying GObject type system. More...
static Glib::RefPtr< Cursor > | create (const Glib::RefPtr< const Texture > & texture, int hotspot_x, int hotspot_y, const Glib::RefPtr< Cursor > & fallback={})
| Creates a new cursor from a `Gdk::Texture`. More...
static Glib::RefPtr< Cursor > | create (const Glib::ustring & name, const Glib::RefPtr< Cursor > & fallback={})
| Creates a new cursor by looking up name in the current cursor theme. More...

## Related Functions
(Note that these are not member functions.)
Glib::RefPtr< Gdk::Cursor > | wrap (GdkCursor * object, bool take_copy=false)
| A Glib::wrap() method for this object. More...

## Additional Inherited Members
Public Types inherited from Glib::Object
typedef void(*)(gpointer data | DestroyNotify)
Public Types inherited from sigc::trackable
typedef internal::func_destroy_notify | func_destroy_notify
Public Types inherited from sigc::notifiable
typedef internal::func_destroy_notify | func_destroy_notify
Protected Member Functions inherited from Glib::Object
| Object ()
| Object (const Glib::ConstructParams &construct_params)
| Object (GObject *castitem)
| ~Object () noexcept override
Protected Member Functions inherited from Glib::ObjectBase
| ObjectBase ()
| ObjectBase (const char *custom_type_name)
| ObjectBase (const std::type_info &custom_type_info)
| 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)

## Detailed Description

This represents a cursor.

## Constructor & Destructor Documentation

Gdk::Cursor::Cursor | ( | Cursor && | src | ) |
| noexcept

Gdk::Cursor::~Cursor | ( |  | ) |
| overridenoexcept

## Member Function Documentation

static Glib::RefPtr<Cursor> Gdk::Cursor::create | ( | const Glib::RefPtr< const Texture > & | texture,
|  | int | hotspot_x,
|  | int | hotspot_y,
|  | const Glib::RefPtr< Cursor > & | fallback = `{}`
| ) |  |
| static

Creates a new cursor from a `Gdk::Texture`.

Parameters

  texture | The texture providing the pixel data.
  hotspot_x | The horizontal offset of the “hotspot” of the cursor.
  hotspot_y | The vertical offset of the “hotspot” of the cursor.
  fallback | The `Gdk::Cursor` to fall back to when this one cannot be supported.

Returns
  A new `Gdk::Cursor`.

static Glib::RefPtr<Cursor> Gdk::Cursor::create | ( | const Glib::ustring & | name,
|  | const Glib::RefPtr< Cursor > & | fallback = `{}`
| ) |  |
| static

Creates a new cursor by looking up name in the current cursor theme.

A recommended set of cursor names that will work across different platforms can be found in the CSS specification:

"none" | "default" | "help" | "pointer"
"context-menu" | "progress" | "wait" | "cell"
"crosshair" | "text" | "vertical-text" | "alias"
"copy" | "no-drop" | "move" | "not-allowed"
"grab" | "grabbing" | "all-scroll" | "col-resize"
"row-resize" | "n-resize" | "e-resize" | "s-resize"
"w-resize" | "ne-resize" | "nw-resize" | "sw-resize"
"se-resize" | "ew-resize" | "ns-resize" | "nesw-resize"
"nwse-resize" | "zoom-in" | "zoom-out" |

Parameters

  name | The name of the cursor.
  fallback | `nullptr` or the `Gdk::Cursor` to fall back to when this one cannot be supported.

Returns
  A new `Gdk::Cursor`, or `nullptr` if there is no cursor with the given name.

Glib::RefPtr<Cursor> Gdk::Cursor::get_fallback | ( |  | ) |

Returns the fallback for this cursor.

The fallback will be used if this cursor is not available on a given `Gdk::Display`. For named cursors, this can happen when using nonstandard names or when using an incomplete cursor theme. For textured cursors, this can happen when the texture is too large or when the `Gdk::Display` it is used on does not support textured cursors.

Returns
  The fallback of the cursor or `nullptr` to use the default cursor as fallback.

Glib::RefPtr<const Cursor> Gdk::Cursor::get_fallback | ( |  | ) | const

Returns the fallback for this cursor.

The fallback will be used if this cursor is not available on a given `Gdk::Display`. For named cursors, this can happen when using nonstandard names or when using an incomplete cursor theme. For textured cursors, this can happen when the texture is too large or when the `Gdk::Display` it is used on does not support textured cursors.

Returns
  The fallback of the cursor or `nullptr` to use the default cursor as fallback.

int Gdk::Cursor::get_hotspot_x | ( |  | ) | const

Returns the horizontal offset of the hotspot.

The hotspot indicates the pixel that will be directly above the cursor.

Note that named cursors may have a nonzero hotspot, but this function will only return the hotspot position for cursors created with new_from_texture().

Returns
  The horizontal offset of the hotspot or 0 for named cursors.

int Gdk::Cursor::get_hotspot_y | ( |  | ) | const

Returns the vertical offset of the hotspot.

The hotspot indicates the pixel that will be directly above the cursor.

Note that named cursors may have a nonzero hotspot, but this function will only return the hotspot position for cursors created with new_from_texture().

Returns
  The vertical offset of the hotspot or 0 for named cursors.

Glib::ustring Gdk::Cursor::get_name | ( |  | ) | const

Returns the name of the cursor.

If the cursor is not a named cursor, `nullptr` will be returned.

Returns
  The name of the cursor or `nullptr` if it is not a named cursor.

Glib::RefPtr<Texture> Gdk::Cursor::get_texture | ( |  | ) |

Returns the texture for the cursor.

If the cursor is a named cursor, `nullptr` will be returned.

Returns
  The texture for cursor or `nullptr` if it is a named cursor.

Glib::RefPtr<const Texture> Gdk::Cursor::get_texture | ( |  | ) | const

Returns the texture for the cursor.

If the cursor is a named cursor, `nullptr` will be returned.

Returns
  The texture for cursor or `nullptr` if it is a named cursor.

static GType Gdk::Cursor::get_type | ( |  | ) |
| static

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

GdkCursor* Gdk::Cursor::gobj | ( |  | ) |
| inline

Provides access to the underlying C GObject.

const GdkCursor* Gdk::Cursor::gobj | ( |  | ) | const
| inline

Provides access to the underlying C GObject.

GdkCursor* Gdk::Cursor::gobj_copy | ( |  | ) |

Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.

Cursor& Gdk::Cursor::operator= | ( | Cursor && | src | ) |
| noexcept

Glib::PropertyProxy_ReadOnly< Glib::RefPtr<Cursor> > Gdk::Cursor::property_fallback | ( |  | ) | const

Cursor to fall back to if this cursor cannot be displayed.

Returns
  A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly< int > Gdk::Cursor::property_hotspot_x | ( |  | ) | const

X position of the cursor hotspot in the cursor image.

Default value: 0

Returns
  A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly< int > Gdk::Cursor::property_hotspot_y | ( |  | ) | const

Y position of the cursor hotspot in the cursor image.

Default value: 0

Returns
  A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly< Glib::ustring > Gdk::Cursor::property_name | ( |  | ) | const

Name of this this cursor.

The name will be `nullptr` if the cursor was created from a texture.

Default value: ""

Returns
  A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly< Glib::RefPtr<Texture> > Gdk::Cursor::property_texture | ( |  | ) | const

The texture displayed by this cursor.

The texture will be `nullptr` if the cursor was created from a name.

Returns
  A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

## Friends And Related Function Documentation

Glib::RefPtr< Gdk::Cursor > wrap | ( | GdkCursor * | 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.