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• sf
• Cursor

Public Types | Public Member Functions | Static Public Member Functions | Friends | List of all members

sf::Cursor Class Reference

Window module

Cursor defines the appearance of a system cursor. More...

#include <SFML/Window/Cursor.hpp>

Public Types
enum class	Type {   Arrow , ArrowWait , Wait , Text ,   Hand , SizeHorizontal , SizeVertical , SizeTopLeftBottomRight ,   SizeBottomLeftTopRight , SizeLeft , SizeRight , SizeTop ,   SizeBottom , SizeTopLeft , SizeBottomRight , SizeBottomLeft ,   SizeTopRight , SizeAll , Cross , Help ,   NotAllowed }
	Enumeration of the native system cursor types. More...

Public Member Functions
	~Cursor ()
	Destructor.
	Cursor (const Cursor &)=delete
	Deleted copy constructor.
Cursor &	operator= (const Cursor &)=delete
	Deleted copy assignment.
	Cursor (Cursor &&) noexcept
	Move constructor.
Cursor &	operator= (Cursor &&) noexcept
	Move assignment.
	Cursor (const std::uint8_t *pixels, Vector2u size, Vector2u hotspot)
	Construct a cursor with the provided image.
	Cursor (Type type)
	Create a native system cursor.

Static Public Member Functions
static std::optional< Cursor >	createFromPixels (const std::uint8_t *pixels, Vector2u size, Vector2u hotspot)
	Create a cursor with the provided image.
static std::optional< Cursor >	createFromSystem (Type type)
	Create a native system cursor.

Friends
class	WindowBase

Detailed Description

Cursor defines the appearance of a system cursor.

Warning

Features related to Cursor are not supported on iOS and Android.

This class abstracts the operating system resources associated with either a native system cursor or a custom cursor.

After loading the cursor graphical appearance with either createFromPixels() or createFromSystem(), the cursor can be changed with sf::WindowBase::setMouseCursor().

The behavior is undefined if the cursor is destroyed while in use by the window.

Usage example:

sf::Window window;

// ... create window as usual ...

const auto cursor = sf::Cursor::createFromSystem(sf::Cursor::Type::Hand).value();

window.setMouseCursor(cursor);

sf::Cursor::createFromSystem

static std::optional< Cursor > createFromSystem(Type type)

Create a native system cursor.

sf::Cursor::Type::Hand

@ Hand

Pointing hand cursor.

sf::WindowBase::setMouseCursor

void setMouseCursor(const Cursor &cursor)

Set the displayed cursor to a native system cursor.

sf::Window

Window that serves as a target for OpenGL rendering.

Definition Window/Window.hpp:56

See also

sf::WindowBase::setMouseCursor

Definition at line 50 of file Cursor.hpp.

Member Enumeration Documentation

◆ Type

enum class sf::Cursor::Type

strong

Enumeration of the native system cursor types.

Refer to the following table to determine which cursor is available on which platform.

Type	Linux	macOS	Windows
sf::Cursor::Type::Arrow	yes	yes	yes
sf::Cursor::Type::ArrowWait	no	no	yes
sf::Cursor::Type::Wait	yes	no	yes
sf::Cursor::Type::Text	yes	yes	yes
sf::Cursor::Type::Hand	yes	yes	yes
sf::Cursor::Type::SizeHorizontal	yes	yes	yes
sf::Cursor::Type::SizeVertical	yes	yes	yes
sf::Cursor::Type::SizeTopLeftBottomRight	no	yes*	yes
sf::Cursor::Type::SizeBottomLeftTopRight	no	yes*	yes
sf::Cursor::Type::SizeLeft	yes	yes**	yes**
sf::Cursor::Type::SizeRight	yes	yes**	yes**
sf::Cursor::Type::SizeTop	yes	yes**	yes**
sf::Cursor::Type::SizeBottom	yes	yes**	yes**
sf::Cursor::Type::SizeTopLeft	yes	yes**	yes**
sf::Cursor::Type::SizeTopRight	yes	yes**	yes**
sf::Cursor::Type::SizeBottomLeft	yes	yes**	yes**
sf::Cursor::Type::SizeBottomRight	yes	yes**	yes**
sf::Cursor::Type::SizeAll	yes	no	yes
sf::Cursor::Type::Cross	yes	yes	yes
sf::Cursor::Type::Help	yes	yes*	yes
sf::Cursor::Type::NotAllowed	yes	yes	yes

• These cursor types are undocumented so may not be available on all versions, but have been tested on 10.13

** On Windows and macOS, double-headed arrows are used

Enumerator
Arrow	Arrow cursor (default)
ArrowWait	Busy arrow cursor.
Wait	Busy cursor.
Text	I-beam, cursor when hovering over a field allowing text entry.
Hand	Pointing hand cursor.
SizeHorizontal	Horizontal double arrow cursor.
SizeVertical	Vertical double arrow cursor.
SizeTopLeftBottomRight	Double arrow cursor going from top-left to bottom-right.
SizeBottomLeftTopRight	Double arrow cursor going from bottom-left to top-right.
SizeLeft	Left arrow cursor on Linux, same as SizeHorizontal on other platforms.
SizeRight	Right arrow cursor on Linux, same as SizeHorizontal on other platforms.
SizeTop	Up arrow cursor on Linux, same as SizeVertical on other platforms.
SizeBottom	Down arrow cursor on Linux, same as SizeVertical on other platforms.
SizeTopLeft	Top-left arrow cursor on Linux, same as SizeTopLeftBottomRight on other platforms.
SizeBottomRight	Bottom-right arrow cursor on Linux, same as SizeTopLeftBottomRight on other platforms.
SizeBottomLeft	Bottom-left arrow cursor on Linux, same as SizeBottomLeftTopRight on other platforms.
SizeTopRight	Top-right arrow cursor on Linux, same as SizeBottomLeftTopRight on other platforms.
SizeAll	Combination of SizeHorizontal and SizeVertical.
Cross	Crosshair cursor.
Help	Help cursor.
NotAllowed	Action not allowed cursor.

Definition at line 89 of file Cursor.hpp.

Constructor & Destructor Documentation

◆ ~Cursor()

sf::Cursor::~Cursor

(

)

Destructor.

This destructor releases the system resources associated with this cursor, if any.

◆ Cursor() [1/4]

sf::Cursor::Cursor ( const Cursor & )

delete

Deleted copy constructor.

◆ Cursor() [2/4]

sf::Cursor::Cursor ( Cursor && )

noexcept

Move constructor.

◆ Cursor() [3/4]

sf::Cursor::Cursor	(	const std::uint8_t *	pixels,
		Vector2u	size,
		Vector2u	hotspot )

Construct a cursor with the provided image.

pixels must be an array of size pixels in 32-bit RGBA format. If not, this will cause undefined behavior.

If pixels is nullptr or either of size's properties are 0, the current cursor is left unchanged and the function will return false.

In addition to specifying the pixel data, you can also specify the location of the hotspot of the cursor. The hotspot is the pixel coordinate within the cursor image which will be located exactly where the mouse pointer position is. Any mouse actions that are performed will return the window/screen location of the hotspot.

Warning

On Unix platforms which do not support colored cursors, the pixels are mapped into a monochrome bitmap: pixels with an alpha channel to 0 are transparent, black if the RGB channel are close to zero, and white otherwise.

Parameters

pixels	Array of pixels of the image
size	Width and height of the image
hotspot	(x,y) location of the hotspot

Exceptions

`sf::Exception`

if the cursor could not be constructed

◆ Cursor() [4/4]

sf::Cursor::Cursor ( Type type )

explicit

Create a native system cursor.

Refer to the list of cursor available on each system (see sf::Cursor::Type) to know whether a given cursor is expected to load successfully or is not supported by the operating system.

Parameters

type	Native system cursor type

Exceptions

`sf::Exception`

if the corresponding cursor is not natively supported by the operating system

Member Function Documentation

◆ createFromPixels()

static std::optional< Cursor > sf::Cursor::createFromPixels ( const std::uint8_t * pixels, Vector2u size, Vector2u hotspot )

staticnodiscard

Create a cursor with the provided image.

pixels must be an array of size pixels in 32-bit RGBA format. If not, this will cause undefined behavior.

If pixels is nullptr or either of size's properties are 0, the current cursor is left unchanged and the function will return false.

In addition to specifying the pixel data, you can also specify the location of the hotspot of the cursor. The hotspot is the pixel coordinate within the cursor image which will be located exactly where the mouse pointer position is. Any mouse actions that are performed will return the window/screen location of the hotspot.

Warning

On Unix platforms which do not support colored cursors, the pixels are mapped into a monochrome bitmap: pixels with an alpha channel to 0 are transparent, black if the RGB channel are close to zero, and white otherwise.

Parameters

pixels	Array of pixels of the image
size	Width and height of the image
hotspot	(x,y) location of the hotspot

Returns

Cursor if the cursor was successfully loaded; std::nullopt otherwise

◆ createFromSystem()

static std::optional< Cursor > sf::Cursor::createFromSystem ( Type type )

staticnodiscard

Create a native system cursor.

Refer to the list of cursor available on each system (see sf::Cursor::Type) to know whether a given cursor is expected to load successfully or is not supported by the operating system.

Parameters

type	Native system cursor type

Returns

Cursor if and only if the corresponding cursor is natively supported by the operating system; std::nullopt otherwise

◆ operator=() [1/2]

Cursor & sf::Cursor::operator= ( const Cursor & )

delete

Deleted copy assignment.

◆ operator=() [2/2]

Cursor & sf::Cursor::operator= ( Cursor && )

noexcept

Move assignment.

Friends And Related Symbol Documentation

◆ WindowBase

friend class WindowBase

friend

Definition at line 245 of file Cursor.hpp.

---

The documentation for this class was generated from the following file:

• Cursor.hpp