Window

Style

class sfml.window.Style

This class defines the following constants:

Style Description
NONE No border / title bar (this flag and all others are mutually exclusive).
TITLEBAR Title bar + fixed border.
RESIZE Titlebar + close button.
CLOSE Request a page’s header only.
FULLSCREEN Fullscreen mode (this flag and all others are mutually exclusive)
DEFAULT Default window style.

Event

class sfml.window.Event

Defines a system event and its parameters.

Event holds all the information about a system event that just happened.

Events are retrieved using the Window.poll_event() and Window.wait_event() functions. You can also retrieve a generator that iterates over the pending events the property Window.events.

An Event instance contains the data of the event.

Usage example:

for event in window.events:
   # request for closing the window
   if type(event) is sf.CloseEvent:
      window.close()

   # the escape key was pressed
   if type(event) is sf.KeyEvent and event.code is sf.Keyboard.ESCAPE:
      window.close()

   # the window was resized
   if type(event) is sf.ResizeEvent:
      do_something_with_the_new_size(event.size)

   # ...

CloseEvent

class sfml.window.CloseEvent(Event)

The window requested to be closed.

ResizeEvent

class sfml.window.ResizeEvent(Event)

The window was resized.

size

Tell you the new window size.

Return type:sfml.system.Vector2

FocusEvent

class sfml.window.FocusEvent(Event)

The window gained or lost the focus, gained and lost return boolean.

gained
lost

MouseEvent

class sfml.window.MouseEvent

The mouse cursor entered or left the area of the window, entered and left return boolean.

entered
left

TextEvent

class sfml.window.TextEvent(Event)

A character was entered. unicode return the ASCII code (integer).

unicode

KeyEvent

class sfml.window.KeyEvent(Event)

A key was pressed or released. pressed and released return boolean.

pressed

Tell whether the key has been pressed.

released

Tell whether the key has been released.

code

Tell you the code of the key that has been pressed. You’ll find the list in Keyboard.

alt

Tell you if the Alt key was pressed.

control

Tell you if the Control key was pressed.

shift

Tell you if the Shift key was pressed.

system

Tell you if the System key was pressed.

MouseWheelEvent

class sfml.window.MouseWheelEvent

The mouse wheel was scrolled.

delta

Number of ticks the wheel has moved (positive is up, negative is down)

Return type:integer
position

Position of the mouse pointer, relative to the left of the owner window.

Return type:sfml.system.Vector2

MouseButtonEvent

class sfml.window.MouseButtonEvent

A mouse button was pressed or released.

pressed

Tell whether the button has been pressed.

released

Tell whether the button has been released.

button

Code of the button that has been pressed or released. You’ll find the list in Mouse.

position

Position of the mouse pointer, relative to the left of the owner window.

Return type:sfml.system.Vector2

MouseMoveEvent

class sfml.window.MouseMoveEvent

The mouse cursor moved. To know the offset, you must take care of saving the previous value and compare with the next one.

position

Position of the mouse pointer, relative to the left of the owner window.

Return type:sfml.system.Vector2

JoystickMoveEvent

class sfml.window.JoystickMoveEvent

The joystick moved along an axis.

joystick_id
axis
position

JoystickButtonEvent

class sfml.window.JoystickButtonEvent

A joystick button was pressed or released.

pressed
released
joystick_id
button

JoystickConnectEvent

class sfml.window.JoystickConnectEvent

A joystick was connected or disconnected.

connected
disconnected
joystick_id

TouchEvent

class sfml.window.TouchEvent

A touch event either began or ended.

state
finger
position

TouchMoveEvent

class sfml.window.TouchMoveEvent

A finger moved while touching the screen.

finger
position

SensorEvent

class sfml.window.SensorEvent

A sensor value changed

type
data

VideoMode

class sfml.window.VideoMode

VideoMode defines a video mode (width, height, bpp)

A video mode is defined by a width and a height (in pixels) and a depth (in bits per pixel).

Video modes are used to setup windows (sfml.graphics.Window) at creation time.

The main usage of video modes is for fullscreen mode: indeed you must use one of the valid video modes allowed by the OS (which are defined by what the monitor and the graphics card support), otherwise your window creation will just fail.

VideoMode provides a class method for retrieving the list of all the video modes supported by the system: get_fullscreen_modes().

A custom video mode can also be checked directly for fullscreen compatibility with its is_valid() function.

Additionally, VideoMode provides a class method to get the mode currently used by the desktop: get_desktop_mode(). This allows to build windows with the same size or pixel depth as the current resolution.

Usage example:

# display the list of all the video modes available for fullscreen
i = 0
modes = sf.VideoMode.get_fullscreen_modes()
for mode in modes:
        print("Mode #{0}: {1}".format(i, mode))
        i += 1

# create a window with the same pixel depth as the desktop
desktop = sf.VideoMode.get_desktop_mode()
width, bpp = desktop
window = sf.Window(sf.VideoMode(1024, 768, bpp), "pySFML Window")
VideoMode(width, height[, bits_per_pixel=32])

Construct the video mode with its attributes.

Parameters:
  • width (integer) – Width in pixels
  • height (integer) – Height in pixels
  • bits_per_pixel (integer) – Pixel depths in bits per pixel
size

Video mode size, in pixels.

Type:sfml.system.Vector2
width

Video mode width, in pixels.

Type:integer
height

Video mode height, in pixels.

Type:integer
bpp

Video mode pixel depth, in bits per pixels.

Type:integer
classmethod get_desktop_mode()

Get the current desktop video mode.

Type:sfml.window.VideoMode
classmethod get_fullscreen_modes()

Retrieve all the video modes supported in fullscreen mode.

When creating a fullscreen window, the video mode is restricted to be compatible with what the graphics driver and monitor support. This function returns the complete list of all video modes that can be used in fullscreen mode. The returned array is sorted from best to worst, so that the first element will always give the best mode (higher width, height and bits-per-pixel).

Return type:list of sfml.window.VideoMode
is_valid()

Tell whether or not the video mode is valid.

The validity of video modes is only relevant when using fullscreen windows; otherwise any video mode can be used with no restriction.

Return type:bool

ContextSettings

class sfml.window.ContextSettings(int depth=0, int stencil=0, int antialiasing=0, int major=2, int minor=0)

Structure defining the settings of the OpenGL context attached to a window.

ContextSettings allows to define several advanced settings of the OpenGL context attached to a window.

All these settings have no impact on the regular SFML rendering (graphics module) – except the anti-aliasing level, so you may need to use this structure only if you’re using SFML as a windowing system for custom OpenGL rendering.

The depth_bits and stencil_bits properties define the number of bits per pixel requested for the (respectively) depth and stencil buffers.

antialiasing_level represents the requested number of multisampling levels for anti-aliasing.

major_version and minor_version define the version of the OpenGL context that you want. Only versions greater or equal to 3.0 are relevant; versions lesser than 3.0 are all handled the same way (i.e. you can use any version < 3.0 if you don’t want an OpenGL 3 context).

Please note that these values are only a hint. No failure will be reported if one or more of these values are not supported by the system; instead, SFML will try to find the closest valid match. You can then retrieve the settings that the window actually used to create its context, with sfml.graphics.Window.settings.

depth_bits

Bits of the depth buffer.

stencil_bits

Bits of the stencil buffer.

antialiasing_level

Level of antialiasing.

major_version

Major number of the context version to create.

minor_version

Minor number of the context version to create.

Pixels

class sfml.window.Pixels

Utility class to manipulate pixels, more precisely, an array of unsigned char that represents an image.

This could have been handled with the built-in type “bytes” for python3 or a simple string coded on 8-bits for python2 but as an image has two dimensions, it has to tell its width (and its height) too.

Usage examples:

image = sf.Image.from_file("icon.png")
window = sf.Window(sf.VideoMode(640, 480), "pySFML")

window.icon = image.pixels

x, y, w, h = 86, 217, image.size
pixels = image.pixels

assert pixels[w*y+x+0] == image[x, y].r
assert pixels[w*y+x+1] == image[x, y].g
assert pixels[w*y+x+2] == image[x, y].b
assert pixels[w*y+x+3] == image[x, y].a
width

Get its width.

height

Get its height.

data

Return a copy of the data inside.

Return type:bytes or string

Window

class sfml.window.Window

Window that serves as a target for OpenGL rendering.

Window is the main class of the Window module.

It defines an OS window that is able to receive an OpenGL rendering.

A Window can create its own new window, or be embedded into an already existing control using the create(handle) function. This can be useful for embedding an OpenGL rendering area into a view which is part of a bigger GUI with existing windows, controls, etc. It can also serve as embedding an OpenGL rendering area into a window created by another (probably richer) GUI library like Qt or wxWidgets.

The Window class provides a simple interface for manipulating the window: move(), resize(), show()/hide(), control mouse cursor, etc. It also provides event handling through its poll_event() and wait_event() functions.

Note that OpenGL experts can pass their own parameters (antialiasing level, bits for the depth and stencil buffers, etc.) to the OpenGL context attached to the window, with the ContextSettings structure which is passed as an optional argument when creating the window.

Usage example:

# declare and create a new window
window = sf.Window(sf.VideoMode(800, 600), "pySFML Window")

# limit the framerate to 60 frames per second (this step is optional)
window.framerate_limit = 60

# the main loop - ends as soon as the window is closed
while window.is_open:
        # event processing
        for event in window.events:
                # request for closing the window
                if type(event) is sf.CloseEvent:
                        window.close()

                # activate the window for OpenGL rendering
                window.active = True

                # openGL drawing commands go here...

                # end the current frame and display its contents on screen
                window.display()
Window(mode, title[, style[, settings]])

Construct a new window.

This creates the window with the size and pixel depth defined in mode. An optional style can be passed to customize the look and behaviour of the window (borders, title bar, resizable, closable, ...). If style contains sfml.window.Style.FULLSCREEN, then mode must be a valid video mode.

The fourth parameter is an optional structure specifying advanced OpenGL context settings such as antialiasing, depth-buffer bits, etc.

Parameters:
create(mode, title[, style[, settings]])

Recreate the window.

Parameters:
close()

Close the window and destroy all the attached resources.

After calling this function, the Window instance remains valid and you can call recreate() to recreate the window. All other functions such as poll_event() or display() will still work (i.e. you don’t have to test is_open every time), and will have no effect on closed windows.

is_open

Tell whether or not the window is open.

This attribute returns whether or not the window exists. Note that a hidden window (hide()) is open (therefore this property would return True).

Type:bool
opened

Deprecated since version 1.2.

See and use is_open() instead. This method is kept for backward compatibilities.

settings

Get the settings of the OpenGL context of the window.

Note that these settings may be different from what was passed to the constructor or the recreate() function, if one or more settings were not supported. In this case, SFML chose the closest match.

Type:sfml.window.ContextSettings
events

Return a generator that iterates over new events.

Type:generator
poll_event()

Pop the event on top of events stack, if any, and return it.

This function is not blocking: if there’s no pending event then it will return false and leave event unmodified. Note that more than one event may be present in the events stack, thus you should always call this function in a loop to make sure that you process every pending event.

Returns:Returns an event if any otherwise None
Return type:sfml.window.Event or None
wait_event()

Wait for an event and return it.

This function is blocking: if there’s no pending event then it will wait until an event is received. After this function returns (and no error occurred), the event object is always valid. This function is typically used when you have a thread that is dedicated to events handling: you want to make this thread sleep as long as no new event is received.

Returns:Returns an event or None if an error occurred.
Return type:sfml.window.Event
position

Return or change the position of the window on screen.

This function only works for top-level windows (i.e. it will be ignored for windows created from the handle of a child window/control).

Type:sfml.system.Vector2
size

Return or change the size of the rendering region of the window.

Type:sfml.system.Vector2
icon

Allow to change the window’s icon.

The OS default icon is used by default.

Type:sfml.window.Pixels
visible

Set or get the window’s visibility status. You shouldn’t rely on the getter.

The window is shown by default.

Type:bool
show()

Show the window.

It has no effect if the window was already shown.

hide()

Hide the window.

It has no effect if the window was already hidden.

vertical_synchronization

Get or set the vertical synchronization.

Activating vertical synchronization will limit the number of frames displayed to the refresh rate of the monitor. This can avoid some visual artifacts, and limit the framerate to a good value (but not constant across different computers).. You shouldn’t rely on the getter.

Vertical synchronization is disabled by default

Type:bool
mouse_cursor_visible

Show or hide the mouse cursor.

The mouse cursor is visible by default

Type:bool
key_repeat_enabled

Enable or disable automatic key-repeat.

If key repeat is enabled, you will receive repeated KeyPressed events while keeping a key pressed. If it is disabled, you will only get a single event when the key is pressed.

Key repeat is enabled by default.

Type:bool
framerate_limit

Limit the framerate to a maximum fixed frequency.

If a limit is set, the window will use a small delay after each call to display() to ensure that the current frame lasted long enough to match the framerate limit. pySFML will try to match the given limit as much as it can, but since it internally uses sleep(), whose precision depends on the underlying OS, the results may be a little imprecise as well (for example, you can get 65 FPS when requesting 60).

Type:integer
joystick_threshold

Change the joystick threshold.

The joystick threshold is the value below which no JoystickMoveEvent will be generated.

The threshold value is 0.1 by default.

Type:float
active

Activate or deactivate the window as the current target for OpenGL rendering.

A window is active only on the current thread, if you want to make it active on another thread you have to deactivate it on the previous thread first if it was active. Only one window can be active on a thread at a time, thus the window previously active (if any) automatically gets deactivated. This is not to be confused with request_focus().

request_focus()

Request the current window to be made the active foreground window.

At any given time, only one window may have the input focus to receive input events such as keystrokes or mouse events. If a window requests focus, it only hints to the operating system, that it would like to be focused. The operating system is free to deny the request. This is not to be confused with active.

has_focus()

Check whether the window has the input focus.

At any given time, only one window may have the input focus to receive input events such as keystrokes or most mouse events.

Returns:True if window has focus, false otherwise
Return type:bool
display()

Display on screen what has been rendered to the window so far.

This function is typically called after all OpenGL rendering has been done for the current frame, in order to show it on screen.

system_handle

Get the OS-specific handle of the window.

The type of the returned handle is :class`sfml.graphics.WindowHandle`, which is a typedef to the handle type defined by the OS. You shouldn’t need to use this function, unless you have very specific stuff to implement that SFML doesn’t support, or implement a temporary workaround until a bug is fixed.

on_create()

Function called after the window has been created.

This function is called so that derived classes can perform their own specific initialization as soon as the window is created.

Usage examples:

class MyWindow(sf.Window):
   def __init__(self):
      sf.Window.__init__(self, sf.VideoMode(640, 480), "pySFML")

   def on_create(self):
      print("Window created or recreated...")
      do_something()

Reimplemented in sfml.graphics.RenderWindow

on_resize()

Function called after the window has been resized.

This function is called so that derived classes can perform custom actions when the size of the window changes.

Usage examples:

class MyWindow(sf.Window):
   def __init__(self):
      sf.Window.__init__(self, sf.VideoMode(640, 480), "pySFML")

   def on_resize(self):
      print("Window size changed")
      do_something()

Reimplemented in sf.RenderWindow

Keyboard

class sfml.window.Keyboard

Give access to the real-time state of the keyboard.

Keyboard provides an interface to the state of the keyboard.

It only contains class methods (a single keyboard is assumed), so it’s not meant to be instantiated.

This class allows users to query the keyboard state at any time and directly, without having to deal with a window and its events. Compared to MouseButtonEvent events, Keyboard can retrieve the state of a key at any time (you don’t need to store and update a boolean on your side in order to know if a key is pressed or released), and you always get the real state of the keyboard, even if keys are pressed or released when your window is out of focus and no event is triggered.

Usage example:

if sf.Keyboard.is_key_pressed(sf.Keyboard.LEFT)
   # move left...
elif sf.Keyboard.is_key_pressed(sf.Keyboard.RIGHT):
   # move right...
elif sf.Keyboard.is_key_pressed(sf.Keyboard.ESCAPE):
   # quit...
Key Description
A The A key.
B The B key.
C The C key.
D The D key.
E The E key.
F The F key.
G The G key.
H The H key.
I The I key.
J The J key.
K The K key.
L The L key.
M The M key.
N The N key.
O The O key.
P The P key.
Q The Q key.
R The R key.
S The S key.
T The T key.
U The U key.
V The V key.
W The W key.
X The X key.
Y The Y key.
Z The Z key.
NUM0 The 0 key.
NUM1 The 1 key.
NUM2 The 2 key.
NUM3 The 3 key.
NUM4 The 4 key.
NUM5 The 5 key.
NUM6 The 6 key.
NUM7 The 7 key.
NUM8 The 8 key.
NUM9 The 9 key.
ESCAPE The Escape key.
L_CONTROL The left Control key.
L_SHIFT The left Shift key.
L_ALT The left Alt key.
L_SYSTEM The left OS specific key: window (Windows and Linux), apple (MacOS X), ...
R_CONTROL The right Control key.
R_SHIFT The right Shift key.
R_ALT The right Alt key.
R_SYSTEM The right OS specific key: window (Windows and Linux), apple (MacOS X), ...
MENU The Menu key.
L_BRACKET The [ key.
R_BRACKET The ] key.
SEMI_COLON The ; key.
COMMA The , key.
PERIOD The . key.
QUOTE The ‘ key.
SLASH The / key.
BACK_SLASH The key.
TILDE The ~ key.
EQUAL The = key.
DASH The - key.
SPACE The Space key.
RETURN The Return key.
BACK_SPACE The Backspace key.
TAB The Tabulation key.
PAGE_UP The Page up key.
PAGE_DOWN The Page down key.
END The End key.
HOME The Home key.
INSERT The Insert key.
DELETE The Delete key.
ADD +
SUBTRACT -
MULTIPLY *
DIVIDE /
LEFT Left arrow.
RIGHT Right arrow.
UP Up arrow.
DOWN Down arrow.
NUMPAD0 The numpad 0 key.
NUMPAD1 The numpad 1 key.
NUMPAD2 The numpad 2 key.
NUMPAD3 The numpad 3 key.
NUMPAD4 The numpad 4 key.
NUMPAD5 The numpad 5 key.
NUMPAD6 The numpad 6 key.
NUMPAD7 The numpad 7 key.
NUMPAD8 The numpad 8 key.
NUMPAD9 The numpad 9 key.
F1 The F1 key.
F2 The F2 key.
F3 The F3 key.
F4 The F4 key.
F5 The F5 key.
F6 The F6 key.
F7 The F7 key.
F8 The F8 key.
F9 The F9 key.
F10 The F10 key.
F11 The F11 key.
F12 The F12 key.
F13 The F13 key.
F14 The F14 key.
F15 The F15 key.
PAUSE The Pause key.
KEY_COUNT The total number of keyboard keys
classmethod is_key_pressed(key)

Check if a key is pressed.

Parameters:key (sfml.window.Keyboard‘s constant) – Key to check
classmethod set_virtual_keyboard_visible(visible)

Warning: the virtual keyboard is not supported on all systems. It will typically be implemented on mobile OSes (Android, iOS) but not on desktop OSes (Windows, Linux, ...).

If the virtual keyboard is not available, this function does nothing.

Parameters:visible (boolean) – True to show, false to hide

Joystick

class sfml.window.Joystick

Give access to the real-time state of the joysticks.

Joystick provides an interface to the state of the joysticks.

It only contains class methods, so it’s not meant to be instantiated. Instead, each joystick is identified by an index that is passed to the functions of this class.

This class allows users to query the state of joysticks at any time and directly, without having to deal with a window and its events. Compared to the JoystickButtonEvent and JoystickMoveEvent events, Joystick can retrieve the state of axes and buttons of joysticks at any time (you don’t need to store and update a boolean on your side in order to know if a button is pressed or released), and you always get the real state of joysticks, even if they are moved, pressed or released when your window is out of focus and no event is triggered.

SFML supports:

Unlike the keyboard or mouse, the state of joysticks is sometimes not directly available (depending on the OS), therefore an update() function must be called in order to update the current state of joysticks. When you have a window with event handling, this is done automatically, you don’t need to call anything. But if you have no window, or if you want to check joysticks state before creating one, you must call Joystick.update() explicitly.

Usage example:

# is joystick #0 connected ?
connected = sf.Joystick.is_connected(0)

# how many button does joystick #0 support ?
buttons = sf.Joystick.get_button_count(0)

# does joystick # define a X axis ?
has_X = sf.Joystick.has_axis(0, sf.Joystick.X)

# is button #2 pressed on joystick #0 ?
pressed = sf.Joystick.is_button_pressed(0, 2)

# what's the current position of the Y axis on joystick #0?
position = sf.Joystick.get_axis_position(0, sf.Joystick.Y)
Axis Description
X The X axis.
Y The X axis.
Z The X axis.
R The X axis.
U The X axis.
V The X axis.
POV_X The X axis of the point-of-view hat.
POV_Y The Y axis of the point-of-view hat.
COUNT

Maximum number of supported joysticks.

BUTTON_COUNT

Maximum number of supported buttons.

AXIS_COUNT

Maximum number of supported axes.

classmethod is_connected(joystick)

Check if a joystick is connected.

If the joystick is not connected, this function returns false.

Parameters:joystick (integer) – Index of the joystick to check
Return type:boolean
classmethod get_button_count(joystick)

Return the number of buttons supported by a joystick.

If the joystick is not connected, this function returns 0.

Parameters:joystick (integer) – Index of the joystick
Return type:integer
classmethod has_axis(joystick, axis)

Check if a joystick supports a given axis.

If the joystick is not connected, this function returns false.

Parameters:
  • joystick (integer) – Index of the joystick
  • axis (integer) – Axis to check
Return type:

boolean

classmethod is_button_pressed(joystick, button)

Check if a joystick button is pressed.

If the joystick is not connected, this function returns false.

Parameters:
  • joystick (integer) – Index of the joystick
  • axis (integer) – Button to check
Return type:

boolean

classmethod get_axis_position(joystick, axis)

Get the current position of a joystick axis.

If the joystick is not connected, this function returns 0.

Parameters:
  • joystick (integer) – Index of the joystick
  • axis (integer) – Axis to check
Return type:

boolean

classmethod get_identification(joystick)

Get the joystick information

Parameters:joystick (integer) – Index of the joystick
Returns:A tuple containing the name of the joystick, the manufacturer and product identifier
Return type:tuple
classmethod update()

Update the states of all joysticks.

This function is used internally by SFML, so you normally don’t have to call it explicitly. However, you may need to call it if you have no window yet (or no window at all): in this case the joysticks states are not updated automatically.

Mouse

class sfml.window.Mouse

Give access to the real-time state of the mouse.

Mouse provides an interface to the state of the mouse.

It only contains class methods (a single mouse is assumed), so it’s not meant to be instantiated.

This class allows users to query the mouse state at any time and directly, without having to deal with a window and its events. Compared to the MouseMoveEvent, MouseButtonEvent events, Mouse can retrieve the state of the cursor and the buttons at any time (you don’t need to store and update a boolean on your side in order to know if a button is pressed or released), and you always get the real state of the mouse, even if it is moved, pressed or released when your window is out of focus and no event is triggered.

The set_position() and get_position() functions can be used to change or retrieve the current position of the mouse pointer. There are two versions: one that operates in global coordinates (relative to the desktop) and one that operates in window coordinates (relative to a specific window).

Usage example:

if sf.Mouse.is_button_pressed(sf.Mouse.LEFT):
   # left click...

# get global mouse position
position = sf.Mouse.position
# or: position = sf.Mouse.get_position()

# set mouse position relative to a window
sf.Mouse.set_position(sf.Vector2(100, 200), window)
Button Description
LEFT The left mouse button.
RIGHT The right mouse button.
MIDDLE The middle (wheel) mouse button.
X_BUTTON1 The first extra mouse button.
X_BUTTON2 The second extra mouse button.
BUTTON_COUNT The total number of mouse buttons.
classmethod is_button_pressed(button)

Check if a mouse button is pressed.

Parameters:button (integer (an sfml.window.Mouse‘s constant)) – Button to check
Return type:bool
classmethod get_position([relative_to])

Get the current position of the mouse in window coordinates.

This function returns the current position of the mouse cursor, relative to the given window.

Parameters:relative_to (sfml.window.Window) – Reference window
Return type:bool
classmethod set_position(position[, relative_to])

Set the current position of the mouse in window coordinates.

This function sets the current position of the mouse cursor, relative to the given window.

Parameters:

Touch

class sfml.window.Touch

Touch provides an interface to the state of the touches. It only contains static functions, so it’s not meant to be instantiated.

This class allows users to query the touches state at any time and directly, without having to deal with a window and its events. Compared to the TouchEvent and TouchMoveEvent, Touch can retrieve the state of the touches at any time (you don’t need to store and update a boolean on your side in order to know if a touch is down), and you always get the real state of the touches, even if they happen when your window is out of focus and no event is triggered.

The get_position() function can be used to retrieve the current position of a touch. There are two versions: one that operates in global coordinates (relative to the desktop) and one that operates in window coordinates (relative to a specific window).

Touches are identified by an index (the “finger”), so that in multi-touch events, individual touches can be tracked correctly. As long as a finger touches the screen, it will keep the same index even if other fingers start or stop touching the screen in the meantime. As a consequence, active touch indices may not always be sequential (i.e. touch number 0 may be released while touch number 1 is still down).

Usage example:

if sf.Touch.is_down(0):
   # touch 0 is down

# get global position of touch 1
global_pos = sf.Touch.get_position(1)

# get position of touch 1 relative to a window
relative_pos = sf.Touch.get_position(1, window)
classmethod is_down(finger)

Check if a touch event is currently down.

Parameters:finger (int) – Finger index
Returns:True if finger is currently touching the screen, false otherwise
Return type:boolean
classmethod get_position(finger[, window])

Get the current position of a touch in desktop coordinates.

This function returns the current touch position in global (desktop) coordinates.

Parameters:
Returns:

Current position of finger, or undefined if it’s not down

Return type:

Vector2

Sensor

class sfml.window.Sensor

Sensor provides an interface to the state of the various sensors that a device provides. It only contains static functions, so it’s not meant to be instantiated.

This class allows users to query the sensors values at any time and directly, without having to deal with a window and its events. Compared to the SensorEvent, Sensor can retrieve the state of a sensor at any time (you don’t need to store and update its current value on your side).

Depending on the OS and hardware of the device (phone, tablet, ...), some sensor types may not be available. You should always check the availability of a sensor before trying to read it, with the is_available() function.

You may wonder why some sensor types look so similar, for example ACCELEROMETER and GRAVITY / USER_ACCELERATION. The first one is the raw measurement of the acceleration, and takes in account both the earth gravity and the user movement. The others are more precise: they provide these components separately, which is usually more useful. In fact they are not direct sensors, they are computed internally based on the raw acceleration and other sensors. This is exactly the same for GYROSCOPE vs ORIENTATION.

Because sensors consume a non-negligible amount of current, they are all disabled by default. You must call set_enabled() for each sensor in which you are interested.

Usage example:

if sf.Sensor.is_available(sf.Sensor.GRAVITY):
   # gravity sensor is available

# enable the gravity sensor
sf.Sensor.set_enabled(sf.Sensor.GRAVITY)

# get the current value of gravity
gravity = sf.Sensor.get_value(sf.Sensor.GRAVITY)
Sensor Description
ACCELEROMETER Measures the raw acceleration (m/s²)
GYROSCOPE Measures the raw rotation rates (degrees/s)
MAGNETOMETER Measures the ambient magnetic field (micro-teslas)
GRAVITY Measures the direction and intensity of gravity, independent of device acceleration (m/s²)
USER_ACCELERATION Measures the direction and intensity of device acceleration, independent of the gravity (m/s²)
ORIENTATION Measures the absolute 3D orientation (degrees)
SENSOR_COUNT The total number of sensor
classmethod is_available(sensor)

Check if a sensor is available on the underlying platform

Parameters:sensor (bool) – Sensor to check
Returns:True if the sensor is available, false otherwise
Return type:boolean
classmethod set_enabled(sensor, enabled)

Enable or disable a sensor.

All sensors are disabled by default, to avoid consuming too much battery power. Once a sensor is enabled, it starts sending events of the corresponding type.

This function does nothing if the sensor is unavailable.

Parameters:
  • sensor (int) – Sensor to enable
  • enabled (bool) – True to enable, false to disable
classmethod get_value(sensor)

Get the current sensor value.

Parameters:sensor (int) – Sensor to read
Returns:The current sensor value
Return type:sfml.system.Vector3

Context

class sfml.window.Context

Class holding a valid drawing context.

If you need to make OpenGL calls without having an active window (like in a thread), you can use an instance of this class to get a valid context.

Having a valid context is necessary for every OpenGL call.

Note that a context is only active in its current thread, if you create a new thread it will have no valid context by default.

To use an Context instance, just construct it and let it live as long as you need a valid context. No explicit activation is needed, all it has to do is to exist. Its destructor will take care of deactivating and freeing all the attached resources.

Usage example:

def thread_function():
   context = sf.Context()
   # from now on, you have a valid context

   # you can make OpenGL calls
   glClear(GL_DEPTH_BUFFER_BIT)

# the context is automatically deactivated and destroyed by the
# sf.Context destructor