sf::Cursor Class Reference

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

#include <SFML/Window/Cursor.hpp>

Inheritance diagram for sf::Cursor:

Public Types
enum	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 ()
	Default constructor.
	~Cursor ()
	Destructor.
bool	loadFromPixels (const Uint8 *pixels, Vector2u size, Vector2u hotspot)
	Create a cursor with the provided image.
bool	loadFromSystem (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 the graphical appearance with either loadFromPixels() or loadFromSystem(), the cursor can be changed with sf::Window::setMouseCursor().

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

Usage example:

sf::Window window;
 
// ... create window as usual ...
 
sf::Cursor cursor;
if (cursor.loadFromSystem(sf::Cursor::Hand))
    window.setMouseCursor(cursor);

See also

sf::Window::setMouseCursor

Definition at line 46 of file Cursor.hpp.

Member Enumeration Documentation

Type

enum sf::Cursor::Type

Enumeration of the native system cursor types.

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

Type	Linux	Mac OS X	Windows
sf::Cursor::Arrow	yes	yes	yes
sf::Cursor::ArrowWait	no	no	yes
sf::Cursor::Wait	yes	no	yes
sf::Cursor::Text	yes	yes	yes
sf::Cursor::Hand	yes	yes	yes
sf::Cursor::SizeHorizontal	yes	yes	yes
sf::Cursor::SizeVertical	yes	yes	yes
sf::Cursor::SizeTopLeftBottomRight	no	yes*	yes
sf::Cursor::SizeBottomLeftTopRight	no	yes*	yes
sf::Cursor::SizeLeft	yes	yes**	yes**
sf::Cursor::SizeRight	yes	yes**	yes**
sf::Cursor::SizeTop	yes	yes**	yes**
sf::Cursor::SizeBottom	yes	yes**	yes**
sf::Cursor::SizeTopLeft	yes	yes**	yes**
sf::Cursor::SizeTopRight	yes	yes**	yes**
sf::Cursor::SizeBottomLeft	yes	yes**	yes**
sf::Cursor::SizeBottomRight	yes	yes**	yes**
sf::Cursor::SizeAll	yes	no	yes
sf::Cursor::Cross	yes	yes	yes
sf::Cursor::Help	yes	yes*	yes
sf::Cursor::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 86 of file Cursor.hpp.

Constructor & Destructor Documentation

Cursor()

sf::Cursor::Cursor

(

)

Default constructor.

This constructor doesn't actually create the cursor; initially the new instance is invalid and must not be used until either loadFromPixels() or loadFromSystem() is called and successfully created a cursor.

~Cursor()

sf::Cursor::~Cursor

(

)

Destructor.

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

Member Function Documentation

loadFromPixels()

bool sf::Cursor::loadFromPixels	(	const Uint8 *	pixels,
		Vector2u	size,
		Vector2u	hotspot
	)

Create a cursor with the provided image.

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

If pixels is null or either width or height 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

true if the cursor was successfully loaded; false otherwise

loadFromSystem()

bool sf::Cursor::loadFromSystem

(

Type

type

)

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

true if and only if the corresponding cursor is natively supported by the operating system; false otherwise

Friends And Related Function Documentation

WindowBase

friend class WindowBase

friend

Definition at line 183 of file Cursor.hpp.

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

• Cursor.hpp