# pylint: disable=W0611
# coding: utf-8
'''
Window
======
Core class for creating the default Kivy window. Kivy supports only one window
per application: please don't try to create more than one.
'''
__all__ = ('Keyboard', 'WindowBase', 'Window')
from os.path import join, exists
from os import getcwd
from kivy.core import core_select_lib
from kivy.clock import Clock
from kivy.config import Config
from kivy.logger import Logger
from kivy.base import EventLoop, stopTouchApp
from kivy.modules import Modules
from kivy.event import EventDispatcher
from kivy.properties import ListProperty, ObjectProperty, AliasProperty, \
NumericProperty, OptionProperty, StringProperty, BooleanProperty, \
ColorProperty
from kivy.utils import platform, reify, deprecated, pi_version
from kivy.context import get_current_context
from kivy.uix.behaviors import FocusBehavior
from kivy.setupconfig import USE_SDL2
from kivy.graphics.transformation import Matrix
from kivy.graphics.cgl import cgl_get_backend_name
# late import
VKeyboard = None
android = None
Animation = None
[docs]class Keyboard(EventDispatcher):
'''Keyboard interface that is returned by
:meth:`WindowBase.request_keyboard`. When you request a keyboard,
you'll get an instance of this class. Whatever the keyboard input is
(system or virtual keyboard), you'll receive events through this
instance.
:Events:
`on_key_down`: keycode, text, modifiers
Fired when a new key is pressed down
`on_key_up`: keycode
Fired when a key is released (up)
Here is an example of how to request a Keyboard in accordance with the
current configuration:
.. include:: ../../examples/widgets/keyboardlistener.py
:literal:
'''
# Keycodes mapping, between str <-> int. These keycodes are
# currently taken from pygame.key. But when a new provider will be
# used, it must do the translation to these keycodes too.
keycodes = {
# specials keys
'backspace': 8, 'tab': 9, 'enter': 13, 'rshift': 303, 'shift': 304,
'alt': 308, 'rctrl': 306, 'lctrl': 305,
'super': 309, 'alt-gr': 307, 'compose': 311, 'pipe': 310,
'capslock': 301, 'escape': 27, 'spacebar': 32, 'pageup': 280,
'pagedown': 281, 'end': 279, 'home': 278, 'left': 276, 'up':
273, 'right': 275, 'down': 274, 'insert': 277, 'delete': 127,
'numlock': 300, 'print': 144, 'screenlock': 145, 'pause': 19,
# a-z keys
'a': 97, 'b': 98, 'c': 99, 'd': 100, 'e': 101, 'f': 102, 'g': 103,
'h': 104, 'i': 105, 'j': 106, 'k': 107, 'l': 108, 'm': 109, 'n': 110,
'o': 111, 'p': 112, 'q': 113, 'r': 114, 's': 115, 't': 116, 'u': 117,
'v': 118, 'w': 119, 'x': 120, 'y': 121, 'z': 122,
# 0-9 keys
'0': 48, '1': 49, '2': 50, '3': 51, '4': 52,
'5': 53, '6': 54, '7': 55, '8': 56, '9': 57,
# numpad
'numpad0': 256, 'numpad1': 257, 'numpad2': 258, 'numpad3': 259,
'numpad4': 260, 'numpad5': 261, 'numpad6': 262, 'numpad7': 263,
'numpad8': 264, 'numpad9': 265, 'numpaddecimal': 266,
'numpaddivide': 267, 'numpadmul': 268, 'numpadsubstract': 269,
'numpadadd': 270, 'numpadenter': 271,
# F1-15
'f1': 282, 'f2': 283, 'f3': 284, 'f4': 285, 'f5': 286, 'f6': 287,
'f7': 288, 'f8': 289, 'f9': 290, 'f10': 291, 'f11': 292, 'f12': 293,
'f13': 294, 'f14': 295, 'f15': 296,
# other keys
'(': 40, ')': 41,
'[': 91, ']': 93,
'{': 123, '}': 125,
':': 58, ';': 59,
'=': 61, '+': 43,
'-': 45, '_': 95,
'/': 47, '*': 42,
'?': 47,
'`': 96, '~': 126,
'´': 180, '¦': 166,
'\\': 92, '|': 124,
'"': 34, "'": 39,
',': 44, '.': 46,
'<': 60, '>': 62,
'@': 64, '!': 33,
'#': 35, '$': 36,
'%': 37, '^': 94,
'&': 38, '¬': 172,
'¨': 168, '…': 8230,
'ù': 249, 'à': 224,
'é': 233, 'è': 232,
}
__events__ = ('on_key_down', 'on_key_up', 'on_textinput')
def __init__(self, **kwargs):
super(Keyboard, self).__init__()
#: Window which the keyboard is attached too
self.window = kwargs.get('window', None)
#: Callback that will be called when the keyboard is released
self.callback = kwargs.get('callback', None)
#: Target that have requested the keyboard
self.target = kwargs.get('target', None)
#: VKeyboard widget, if allowed by the configuration
self.widget = kwargs.get('widget', None)
def on_key_down(self, keycode, text, modifiers):
pass
def on_key_up(self, keycode):
pass
def on_textinput(self, text):
pass
[docs] def release(self):
'''Call this method to release the current keyboard.
This will ensure that the keyboard is no longer attached to your
callback.'''
if self.window:
self.window.release_keyboard(self.target)
self.target = None
def _on_window_textinput(self, instance, text):
return self.dispatch('on_textinput', text)
def _on_window_key_down(self, instance, keycode, scancode, text,
modifiers):
keycode = (keycode, self.keycode_to_string(keycode))
if text == '\x04':
Window.trigger_keyboard_height()
return
return self.dispatch('on_key_down', keycode, text, modifiers)
def _on_window_key_up(self, instance, keycode, *largs):
keycode = (keycode, self.keycode_to_string(keycode))
return self.dispatch('on_key_up', keycode)
def _on_vkeyboard_key_down(self, instance, keycode, text, modifiers):
if keycode is None:
keycode = text.lower()
keycode = (self.string_to_keycode(keycode), keycode)
return self.dispatch('on_key_down', keycode, text, modifiers)
def _on_vkeyboard_key_up(self, instance, keycode, text, modifiers):
if keycode is None:
keycode = text
keycode = (self.string_to_keycode(keycode), keycode)
return self.dispatch('on_key_up', keycode)
def _on_vkeyboard_textinput(self, instance, text):
return self.dispatch('on_textinput', text)
[docs] def string_to_keycode(self, value):
'''Convert a string to a keycode number according to the
:attr:`Keyboard.keycodes`. If the value is not found in the
keycodes, it will return -1.
'''
return Keyboard.keycodes.get(value, -1)
[docs] def keycode_to_string(self, value):
'''Convert a keycode number to a string according to the
:attr:`Keyboard.keycodes`. If the value is not found in the
keycodes, it will return ''.
'''
keycodes = list(Keyboard.keycodes.values())
if value in keycodes:
return list(Keyboard.keycodes.keys())[keycodes.index(value)]
return ''
[docs]class WindowBase(EventDispatcher):
'''WindowBase is an abstract window widget for any window implementation.
:Parameters:
`borderless`: str, one of ('0', '1')
Set the window border state. Check the
:mod:`~kivy.config` documentation for a
more detailed explanation on the values.
`fullscreen`: str, one of ('0', '1', 'auto', 'fake')
Make the window fullscreen. Check the
:mod:`~kivy.config` documentation for a
more detailed explanation on the values.
`width`: int
Width of the window.
`height`: int
Height of the window.
`minimum_width`: int
Minimum width of the window (only works for sdl2 window provider).
`minimum_height`: int
Minimum height of the window (only works for sdl2 window provider).
`allow_screensaver`: bool
Allow the device to show a screen saver, or to go to sleep
on mobile devices. Defaults to True. Only works for sdl2 window
provider.
:Events:
`on_motion`: etype, motionevent
Fired when a new :class:`~kivy.input.motionevent.MotionEvent` is
dispatched
`on_touch_down`:
Fired when a new touch event is initiated.
`on_touch_move`:
Fired when an existing touch event changes location.
`on_touch_up`:
Fired when an existing touch event is terminated.
`on_draw`:
Fired when the :class:`Window` is being drawn.
`on_flip`:
Fired when the :class:`Window` GL surface is being flipped.
`on_rotate`: rotation
Fired when the :class:`Window` is being rotated.
`on_close`:
Fired when the :class:`Window` is closed.
`on_request_close`:
Fired when the event loop wants to close the window, or if the
escape key is pressed and `exit_on_escape` is `True`. If a function
bound to this event returns `True`, the window will not be closed.
If the the event is triggered because of the keyboard escape key,
the keyword argument `source` is dispatched along with a value of
`keyboard` to the bound functions.
.. versionadded:: 1.9.0
`on_cursor_enter`:
Fired when the cursor enters the window.
.. versionadded:: 1.9.1
`on_cursor_leave`:
Fired when the cursor leaves the window.
.. versionadded:: 1.9.1
`on_minimize`:
Fired when the window is minimized.
.. versionadded:: 1.10.0
`on_maximize`:
Fired when the window is maximized.
.. versionadded:: 1.10.0
`on_restore`:
Fired when the window is restored.
.. versionadded:: 1.10.0
`on_hide`:
Fired when the window is hidden.
.. versionadded:: 1.10.0
`on_show`:
Fired when when the window is shown.
.. versionadded:: 1.10.0
`on_keyboard`: key, scancode, codepoint, modifier
Fired when the keyboard is used for input.
.. versionchanged:: 1.3.0
The *unicode* parameter has been deprecated in favor of
codepoint, and will be removed completely in future versions.
`on_key_down`: key, scancode, codepoint, modifier
Fired when a key pressed.
.. versionchanged:: 1.3.0
The *unicode* parameter has been deprecated in favor of
codepoint, and will be removed completely in future versions.
`on_key_up`: key, scancode, codepoint
Fired when a key is released.
.. versionchanged:: 1.3.0
The *unicode* parameter has be deprecated in favor of
codepoint, and will be removed completely in future versions.
`on_dropfile`: filename (bytes or string):
Fired when a file is dropped on the application.
.. note::
This event doesn't work for apps with elevated permissions,
because the OS API calls are filtered. Check issue
`#4999 <https://github.com/kivy/kivy/issues/4999>`_ for
pointers to workarounds.
`on_memorywarning`:
Fired when the platform have memory issue (iOS / Android mostly)
You can listen to this one, and clean whatever you can.
.. versionadded:: 1.9.0
`on_textedit(self, text)`:
Fired when inputting with IME.
The string inputting with IME is set as the parameter of
this event.
.. versionadded:: 1.10.1
'''
__instance = None
__initialized = False
_fake_fullscreen = False
# private properties
_density = NumericProperty(1)
_size = ListProperty([0, 0])
_modifiers = ListProperty([])
_rotation = NumericProperty(0)
_clearcolor = ObjectProperty([0, 0, 0, 1])
_focus = BooleanProperty(True)
gl_backends_allowed = []
"""
A list of Kivy gl backend names, which if not empty, will be the
exclusive list of gl backends that can be used with this window.
"""
gl_backends_ignored = []
"""
A list of Kivy gl backend names that may not be used with this window.
"""
children = ListProperty([])
'''List of the children of this window.
:attr:`children` is a :class:`~kivy.properties.ListProperty` instance and
defaults to an empty list.
Use :meth:`add_widget` and :meth:`remove_widget` to manipulate the list of
children. Don't manipulate the list directly unless you know what you are
doing.
'''
parent = ObjectProperty(None, allownone=True)
'''Parent of this window.
:attr:`parent` is a :class:`~kivy.properties.ObjectProperty` instance and
defaults to None. When created, the parent is set to the window itself.
You must take care of it if you are doing a recursive check.
'''
icon = StringProperty()
'''A path to the window icon.
.. versionadded:: 1.1.2
:attr:`icon` is a :class:`~kivy.properties.StringProperty`.
'''
def _get_modifiers(self):
return self._modifiers
modifiers = AliasProperty(_get_modifiers, None, bind=('_modifiers',))
'''List of keyboard modifiers currently active.
.. versionadded:: 1.0.9
:attr:`modifiers` is an :class:`~kivy.properties.AliasProperty`.
'''
def _get_size(self):
r = self._rotation
w, h = self._size
if self._density != 1:
w, h = self._win._get_gl_size()
if self.softinput_mode == 'resize':
h -= self.keyboard_height
if r in (0, 180):
return w, h
return h, w
def _set_size(self, size):
if self._size != size:
r = self._rotation
if r in (0, 180):
self._size = size
else:
self._size = size[1], size[0]
self.dispatch('on_pre_resize', *size)
minimum_width = NumericProperty(0)
'''The minimum width to restrict the window to.
.. versionadded:: 1.9.1
:attr:`minimum_width` is a :class:`~kivy.properties.NumericProperty` and
defaults to 0.
'''
minimum_height = NumericProperty(0)
'''The minimum height to restrict the window to.
.. versionadded:: 1.9.1
:attr:`minimum_height` is a :class:`~kivy.properties.NumericProperty` and
defaults to 0.
'''
allow_screensaver = BooleanProperty(True)
'''Whether the screen saver is enabled, or on mobile devices whether the
device is allowed to go to sleep while the app is open.
.. versionadded:: 1.10.0
:attr:`allow_screensaver` is a :class:`~kivy.properties.BooleanProperty`
and defaults to True.
'''
size = AliasProperty(_get_size, _set_size,
bind=('_size', '_rotation', 'softinput_mode',
'keyboard_height'))
'''Get the rotated size of the window. If :attr:`rotation` is set, then the
size will change to reflect the rotation.
.. versionadded:: 1.0.9
:attr:`size` is an :class:`~kivy.properties.AliasProperty`.
'''
def _get_clearcolor(self):
return self._clearcolor
def _set_clearcolor(self, value):
if value is not None:
if type(value) not in (list, tuple):
raise Exception('Clearcolor must be a list or tuple')
if len(value) != 4:
raise Exception('Clearcolor must contain 4 values')
self._clearcolor = value
clearcolor = AliasProperty(_get_clearcolor, _set_clearcolor,
bind=('_clearcolor', ))
'''Color used to clear the window.
::
from kivy.core.window import Window
# red background color
Window.clearcolor = (1, 0, 0, 1)
# don't clear background at all
Window.clearcolor = None
.. versionchanged:: 1.7.2
The clearcolor default value is now: (0, 0, 0, 1).
.. versionadded:: 1.0.9
:attr:`clearcolor` is an :class:`~kivy.properties.AliasProperty` and
defaults to (0, 0, 0, 1).
'''
# make some property read-only
def _get_width(self):
_size = self._size
if self._density != 1:
_size = self._win._get_gl_size()
r = self._rotation
if r == 0 or r == 180:
return _size[0]
return _size[1]
width = AliasProperty(_get_width, None, bind=('_rotation', '_size'))
'''Rotated window width.
:attr:`width` is a read-only :class:`~kivy.properties.AliasProperty`.
'''
def _get_height(self):
'''Rotated window height'''
r = self._rotation
_size = self._size
if self._density != 1:
_size = self._win._get_gl_size()
kb = self.keyboard_height if self.softinput_mode == 'resize' else 0
if r == 0 or r == 180:
return _size[1] - kb
return _size[0] - kb
height = AliasProperty(_get_height, None,
bind=('_rotation', '_size', 'softinput_mode',
'keyboard_height'))
'''Rotated window height.
:attr:`height` is a read-only :class:`~kivy.properties.AliasProperty`.
'''
def _get_center(self):
return self.width / 2., self.height / 2.
center = AliasProperty(_get_center,
bind=('width', 'height', '_density'),
cache=True)
'''Center of the rotated window.
.. versionadded:: 1.0.9
:attr:`center` is an :class:`~kivy.properties.AliasProperty`.
'''
def _get_rotation(self):
return self._rotation
def _set_rotation(self, x):
x = int(x % 360)
if x == self._rotation:
return
if x not in (0, 90, 180, 270):
raise ValueError('can rotate only 0, 90, 180, 270 degrees')
self._rotation = x
if not self.initialized:
return
self.dispatch('on_pre_resize', *self.size)
self.dispatch('on_rotate', x)
rotation = AliasProperty(_get_rotation, _set_rotation,
bind=('_rotation', ))
'''Get/set the window content rotation. Can be one of 0, 90, 180, 270
degrees.
.. versionadded:: 1.0.9
:attr:`rotation` is an :class:`~kivy.properties.AliasProperty`.
'''
softinput_mode = OptionProperty(
'', options=('', 'below_target', 'pan', 'scale', 'resize')
)
'''This specifies the behavior of window contents on display of the soft
keyboard on mobile platforms. It can be one of '', 'pan', 'scale',
'resize' or 'below_target'. Their effects are listed below.
+----------------+-------------------------------------------------------+
| Value | Effect |
+================+=======================================================+
| '' | The main window is left as is, allowing you to use |
| | the :attr:`keyboard_height` to manage the window |
| | contents manually. |
+----------------+-------------------------------------------------------+
| 'pan' | The main window pans, moving the bottom part of the |
| | window to be always on top of the keyboard. |
+----------------+-------------------------------------------------------+
| 'resize' | The window is resized and the contents scaled to fit |
| | the remaining space. |
+----------------+-------------------------------------------------------+
| 'below_target' | The window pans so that the current target TextInput |
| | widget requesting the keyboard is presented just above|
| | the soft keyboard. |
+----------------+-------------------------------------------------------+
:attr:`softinput_mode` is an :class:`~kivy.properties.OptionProperty` and
defaults to ''.
.. note:: The `resize` option does not currently work with SDL2 on Android.
.. versionadded:: 1.9.0
.. versionchanged:: 1.9.1
The 'below_target' option was added.
'''
_keyboard_changed = BooleanProperty(False)
_kheight = NumericProperty(0)
_kanimation = None
def _free_kanimation(self, *largs):
WindowBase._kanimation = None
def _animate_content(self):
'''Animate content to IME height.
'''
kargs = self.keyboard_anim_args
global Animation
if not Animation:
from kivy.animation import Animation
if WindowBase._kanimation:
WindowBase._kanimation.cancel(self)
WindowBase._kanimation = kanim = Animation(
_kheight=self.keyboard_height + self.keyboard_padding,
d=kargs['d'], t=kargs['t'])
kanim.bind(on_complete=self._free_kanimation)
kanim.start(self)
def _upd_kbd_height(self, *kargs):
self._keyboard_changed = not self._keyboard_changed
self._animate_content()
def _get_ios_kheight(self):
import ios
return ios.get_kheight()
def _get_android_kheight(self):
if USE_SDL2: # Placeholder until the SDL2 bootstrap supports this
return 0
global android
if not android:
import android
return android.get_keyboard_height()
def _get_kheight(self):
if platform == 'android':
return self._get_android_kheight()
if platform == 'ios':
return self._get_ios_kheight()
return 0
keyboard_height = AliasProperty(_get_kheight, bind=('_keyboard_changed',))
'''Returns the height of the softkeyboard/IME on mobile platforms.
Will return 0 if not on mobile platform or if IME is not active.
.. note:: This property returns 0 with SDL2 on Android, but setting
Window.softinput_mode does work.
.. versionadded:: 1.9.0
:attr:`keyboard_height` is a read-only
:class:`~kivy.properties.AliasProperty` and defaults to 0.
'''
keyboard_anim_args = {'t': 'in_out_quart', 'd': .5}
'''The attributes for animating softkeyboard/IME.
`t` = `transition`, `d` = `duration`. This value will have no effect on
desktops.
.. versionadded:: 1.10.0
:attr:`keyboard_anim_args` is a dict and defaults to
{'t': 'in_out_quart', 'd': `.5`}.
'''
keyboard_padding = NumericProperty(0)
'''The padding to have between the softkeyboard/IME & target
or bottom of window. Will have no effect on desktops.
.. versionadded:: 1.10.0
:attr:`keyboard_padding` is a
:class:`~kivy.properties.NumericProperty` and defaults to 0.
'''
def _set_system_size(self, size):
self._size = size
def _get_system_size(self):
if self.softinput_mode == 'resize':
return self._size[0], self._size[1] - self.keyboard_height
return self._size
system_size = AliasProperty(_get_system_size, _set_system_size,
bind=('_size', 'softinput_mode',
'keyboard_height'),
cache=True)
'''Real size of the window ignoring rotation.
.. versionadded:: 1.0.9
:attr:`system_size` is an :class:`~kivy.properties.AliasProperty`.
'''
def _get_effective_size(self):
'''On density=1 and non-ios displays, return system_size, else
return scaled / rotated size.
Used by MouseMotionEvent.update_graphics() and WindowBase.on_motion().
'''
w, h = self.system_size
if platform == 'ios' or self._density != 1:
w, h = self.size
return w, h
borderless = BooleanProperty(False)
'''When set to True, this property removes the window border/decoration.
Check the :mod:`~kivy.config` documentation for a more detailed
explanation on the values.
.. versionadded:: 1.9.0
:attr:`borderless` is a :class:`~kivy.properties.BooleanProperty` and
defaults to False.
'''
fullscreen = OptionProperty(False, options=(True, False, 'auto', 'fake'))
'''This property sets the fullscreen mode of the window. Available options
are: True, False, 'auto' and 'fake'. Check the :mod:`~kivy.config`
documentation for more detailed explanations on these values.
fullscreen is an :class:`~kivy.properties.OptionProperty` and defaults to
`False`.
.. versionadded:: 1.2.0
.. note::
The 'fake' option has been deprecated, use the :attr:`borderless`
property instead.
'''
mouse_pos = ObjectProperty([0, 0])
'''2d position of the mouse within the window.
.. versionadded:: 1.2.0
:attr:`mouse_pos` is an :class:`~kivy.properties.ObjectProperty` and
defaults to [0, 0].
'''
show_cursor = BooleanProperty(True)
'''Set whether or not the cursor is shown on the window.
.. versionadded:: 1.9.1
:attr:`show_cursor` is a :class:`~kivy.properties.BooleanProperty` and
defaults to True.
'''
def _get_focus(self):
return self._focus
focus = AliasProperty(_get_focus, None, bind=('_focus',))
'''Check whether or not the window currently has focus.
.. versionadded:: 1.9.1
:attr:`focus` is a read-only :class:`~kivy.properties.AliasProperty` and
defaults to True.
'''
def _set_cursor_state(self, value):
pass
[docs] def set_system_cursor(self, cursor_name):
'''Set type of a mouse cursor in the Window.
It can be one of 'arrow', 'ibeam', 'wait', 'crosshair', 'wait_arrow',
'size_nwse', 'size_nesw', 'size_we', 'size_ns', 'size_all', 'no', or
'hand'.
On some platforms there might not be a specific cursor supported and
such an option falls back to one of the substitutable alternatives:
+------------+-----------+------------+-----------+---------------+
| | Windows | MacOS | Linux X11 | Linux Wayland |
+============+===========+============+===========+===============+
| arrow | arrow | arrow | arrow | arrow |
+------------+-----------+------------+-----------+---------------+
| ibeam | ibeam | ibeam | ibeam | ibeam |
+------------+-----------+------------+-----------+---------------+
| wait | wait | arrow | wait | wait |
+------------+-----------+------------+-----------+---------------+
| crosshair | crosshair | crosshair | crosshair | hand |
+------------+-----------+------------+-----------+---------------+
| wait_arrow | arrow | arrow | wait | wait |
+------------+-----------+------------+-----------+---------------+
| size_nwse | size_nwse | size_all | size_all | hand |
+------------+-----------+------------+-----------+---------------+
| size_nesw | size_nesw | size_all | size_all | hand |
+------------+-----------+------------+-----------+---------------+
| size_we | size_we | size_we | size_we | hand |
+------------+-----------+------------+-----------+---------------+
| size_ns | size_ns | size_ns | size_ns | hand |
+------------+-----------+------------+-----------+---------------+
| size_all | size_all | size_all | size_all | hand |
+------------+-----------+------------+-----------+---------------+
| no | no | no | no | ibeam |
+------------+-----------+------------+-----------+---------------+
| hand | hand | hand | hand | hand |
+------------+-----------+------------+-----------+---------------+
.. versionadded:: 1.10.1
.. note::
This feature requires the SDL2 window provider and is currently
only supported on desktop platforms.
'''
pass
def _get_window_pos(self):
pass
def _set_window_pos(self, x, y):
pass
def _get_left(self):
if not self.initialized:
return self._left
return self._get_window_pos()[0]
def _set_left(self, value):
pos = self._get_window_pos()
self._set_window_pos(value, pos[1])
def _get_top(self):
if not self.initialized:
return self._top
return self._get_window_pos()[1]
def _set_top(self, value):
pos = self._get_window_pos()
self._set_window_pos(pos[0], value)
top = AliasProperty(_get_top, _set_top)
'''Top position of the window.
.. note:: It's an SDL2 property with `[0, 0]` in the top-left corner.
.. versionchanged:: 1.10.0
:attr:`top` is now an :class:`~kivy.properties.AliasProperty`
.. versionadded:: 1.9.1
:attr:`top` is an :class:`~kivy.properties.AliasProperty` and defaults to
the position set in :class:`~kivy.config.Config`.
'''
left = AliasProperty(_get_left, _set_left)
'''Left position of the window.
.. note:: It's an SDL2 property with `[0, 0]` in the top-left corner.
.. versionchanged:: 1.10.0
:attr:`left` is now an :class:`~kivy.properties.AliasProperty`
.. versionadded:: 1.9.1
:attr:`left` is an :class:`~kivy.properties.AliasProperty` and defaults to
the position set in :class:`~kivy.config.Config`.
'''
@property
def __self__(self):
return self
position = OptionProperty('auto', options=['auto', 'custom'])
render_context = ObjectProperty(None)
canvas = ObjectProperty(None)
title = StringProperty('Kivy')
trigger_create_window = None
__events__ = (
'on_draw', 'on_flip', 'on_rotate', 'on_resize', 'on_move',
'on_close', 'on_minimize', 'on_maximize', 'on_restore',
'on_hide', 'on_show', 'on_motion', 'on_touch_down',
'on_touch_move', 'on_touch_up', 'on_mouse_down',
'on_mouse_move', 'on_mouse_up', 'on_keyboard', 'on_key_down',
'on_key_up', 'on_textinput', 'on_dropfile', 'on_request_close',
'on_cursor_enter', 'on_cursor_leave', 'on_joy_axis',
'on_joy_hat', 'on_joy_ball', 'on_joy_button_down',
'on_joy_button_up', 'on_memorywarning', 'on_textedit',
# internal
'on_pre_resize')
def __new__(cls, **kwargs):
if cls.__instance is None:
cls.__instance = EventDispatcher.__new__(cls)
return cls.__instance
def __init__(self, **kwargs):
force = kwargs.pop('force', False)
# don't init window 2 times,
# except if force is specified
if WindowBase.__instance is not None and not force:
return
self.initialized = False
self._is_desktop = Config.getboolean('kivy', 'desktop')
# create a trigger for update/create the window when one of window
# property changes
self.trigger_create_window = Clock.create_trigger(
self.create_window, -1)
# Create a trigger for updating the keyboard height
self.trigger_keyboard_height = Clock.create_trigger(
self._upd_kbd_height, .5)
self.bind(_kheight=lambda *args: self.update_viewport())
# set the default window parameter according to the configuration
if 'borderless' not in kwargs:
kwargs['borderless'] = Config.getboolean('graphics', 'borderless')
if 'fullscreen' not in kwargs:
fullscreen = Config.get('graphics', 'fullscreen')
if fullscreen not in ('auto', 'fake'):
fullscreen = fullscreen.lower() in ('true', '1', 'yes')
kwargs['fullscreen'] = fullscreen
if 'width' not in kwargs:
kwargs['width'] = Config.getint('graphics', 'width')
if 'height' not in kwargs:
kwargs['height'] = Config.getint('graphics', 'height')
if 'minimum_width' not in kwargs:
kwargs['minimum_width'] = Config.getint('graphics',
'minimum_width')
if 'minimum_height' not in kwargs:
kwargs['minimum_height'] = Config.getint('graphics',
'minimum_height')
if 'allow_screensaver' not in kwargs:
kwargs['allow_screensaver'] = Config.getboolean(
'graphics', 'allow_screensaver')
if 'rotation' not in kwargs:
kwargs['rotation'] = Config.getint('graphics', 'rotation')
if 'position' not in kwargs:
kwargs['position'] = Config.getdefault('graphics', 'position',
'auto')
if 'top' in kwargs:
kwargs['position'] = 'custom'
self._top = kwargs['top']
else:
self._top = Config.getint('graphics', 'top')
if 'left' in kwargs:
kwargs['position'] = 'custom'
self._left = kwargs['left']
else:
self._left = Config.getint('graphics', 'left')
kwargs['_size'] = (kwargs.pop('width'), kwargs.pop('height'))
if 'show_cursor' not in kwargs:
kwargs['show_cursor'] = Config.getboolean(
'graphics', 'show_cursor'
)
if 'shape_image' not in kwargs:
kwargs['shape_image'] = Config.get('kivy', 'window_shape')
super(WindowBase, self).__init__(**kwargs)
# bind all the properties that need to recreate the window
self._bind_create_window()
self.bind(size=self.trigger_keyboard_height,
rotation=self.trigger_keyboard_height)
self.bind(softinput_mode=lambda *dt: self.update_viewport(),
keyboard_height=lambda *dt: self.update_viewport())
self.bind(show_cursor=lambda *dt: self._set_cursor_state(dt[1]))
# init privates
self._system_keyboard = Keyboard(window=self)
self._keyboards = {'system': self._system_keyboard}
self._vkeyboard_cls = None
self.children = []
self.parent = self
# before creating the window
import kivy.core.gl # NOQA
# configure the window
self.create_window()
self.register()
# manage keyboard(s)
self.configure_keyboards()
# assign the default context of the widget creation
if not hasattr(self, '_context'):
self._context = get_current_context()
# mark as initialized
self.initialized = True
def _bind_create_window(self):
for prop in (
'fullscreen', 'borderless', 'position', 'top',
'left', '_size', 'system_size'):
self.bind(**{prop: self.trigger_create_window})
def _unbind_create_window(self):
for prop in (
'fullscreen', 'borderless', 'position', 'top',
'left', '_size', 'system_size'):
self.unbind(**{prop: self.trigger_create_window})
def register(self):
if self.initialized:
return
# attach modules + listener event
EventLoop.set_window(self)
Modules.register_window(self)
EventLoop.add_event_listener(self)
[docs] def mainloop(self):
'''Called by the EventLoop every frame after it idles.
'''
pass
[docs] @deprecated
def toggle_fullscreen(self):
'''Toggle between fullscreen and windowed mode.
.. deprecated:: 1.9.0
Use :attr:`fullscreen` instead.
'''
pass
[docs] def maximize(self):
'''Maximizes the window. This method should be used on desktop
platforms only.
.. versionadded:: 1.9.0
.. note::
This feature requires the SDL2 window provider and is currently
only supported on desktop platforms.
'''
Logger.warning('Window: maximize() is not implemented in the current '
'window provider.')
[docs] def minimize(self):
'''Minimizes the window. This method should be used on desktop
platforms only.
.. versionadded:: 1.9.0
.. note::
This feature requires the SDL2 window provider and is currently
only supported on desktop platforms.
'''
Logger.warning('Window: minimize() is not implemented in the current '
'window provider.')
[docs] def restore(self):
'''Restores the size and position of a maximized or minimized window.
This method should be used on desktop platforms only.
.. versionadded:: 1.9.0
.. note::
This feature requires the SDL2 window provider and is currently
only supported on desktop platforms.
'''
Logger.warning('Window: restore() is not implemented in the current '
'window provider.')
[docs] def hide(self):
'''Hides the window. This method should be used on desktop
platforms only.
.. versionadded:: 1.9.0
.. note::
This feature requires the SDL2 window provider and is currently
only supported on desktop platforms.
'''
Logger.warning('Window: hide() is not implemented in the current '
'window provider.')
[docs] def show(self):
'''Shows the window. This method should be used on desktop
platforms only.
.. versionadded:: 1.9.0
.. note::
This feature requires the SDL2 window provider and is currently
only supported on desktop platforms.
'''
Logger.warning('Window: show() is not implemented in the current '
'window provider.')
[docs] def raise_window(self):
'''Raise the window. This method should be used on desktop
platforms only.
.. versionadded:: 1.9.1
.. note::
This feature requires the SDL2 window provider and is currently
only supported on desktop platforms.
'''
Logger.warning('Window: raise_window is not implemented in the current'
' window provider.')
[docs] def close(self):
'''Close the window'''
self.dispatch('on_close')
# Prevent any leftover that can crash the app later
# like if there is still some GL referenced values
# they may be collected later, but because it was already
# gone in the system, it may collect invalid GL resources
# Just clear everything to force reloading later on.
from kivy.cache import Cache
from kivy.graphics.context import get_context
Cache.remove('kv.loader')
Cache.remove('kv.image')
Cache.remove('kv.shader')
Cache.remove('kv.texture')
get_context().flush()
shape_image = StringProperty('')
'''An image for the window shape (only works for sdl2 window provider).
.. warning:: The image size has to be the same like the window's size!
.. versionadded:: 1.10.1
:attr:`shape_image` is a :class:`~kivy.properties.StringProperty` and
defaults to 'data/images/defaultshape.png'. This value is taken from
:class:`~kivy.config.Config`.
'''
def on_shape_image(self, instane, value):
if self.initialized:
self._set_shape(
shape_image=value, mode=self.shape_mode,
cutoff=self.shape_cutoff, color_key=self.shape_color_key
)
shape_cutoff = BooleanProperty(True)
'''The window :attr:`shape_image` cutoff property (only works for sdl2
window provider).
.. versionadded:: 1.10.1
:attr:`shape_cutoff` is a :class:`~kivy.properties.BooleanProperty` and
defaults to True.
'''
def on_shape_cutoff(self, instane, value):
self._set_shape(
shape_image=self.shape_image, mode=self.shape_mode,
cutoff=value, color_key=self.shape_color_key
)
def _get_shaped(self):
return self._is_shaped()
shaped = AliasProperty(_get_shaped, None)
'''Read only property to check if the window is shapable or not (only works
for sdl2 window provider).
.. versionadded:: 1.10.1
:attr:`shaped` is an :class:`~kivy.properties.AliasProperty`.
'''
def _get_shape_mode(self):
if not self.shaped:
return ''
i = self._get_shaped_mode()['mode']
modes = ('default', 'binalpha', 'reversebinalpha', 'colorkey')
return modes[i]
def _set_shape_mode(self, value):
self._set_shaped_mode(value)
shape_mode = AliasProperty(_get_shape_mode, _set_shape_mode)
'''Window mode for shaping (only works for sdl2 window provider).
- can be RGB only
- `default` - does nothing special
- `colorkey` - hides a color of the :attr:`shape_color_key`
- has to contain alpha channel
- `binalpha` - hides an alpha channel of the :attr:`shape_image`
- `reversebinalpha` - shows only the alpha of the :attr:`shape_image`
.. note::
Before actually setting the mode make sure the Window has the same
size like the :attr:`shape_image`, preferably via Config before
the Window is actually created.
If the :attr:`shape_image` isn't set, the default one will be used
and the mode might not take the desired visual effect.
.. versionadded:: 1.10.1
:attr:`shape_mode` is an :class:`~kivy.properties.AliasProperty`.
'''
shape_color_key = ColorProperty([1, 1, 1, 1])
'''Color key of the shaped window - sets which color will be hidden from
the window :attr:`shape_image` (only works for sdl2 window provider).
.. versionadded:: 1.10.1
:attr:`shape_color_key` is a :class:`~kivy.properties.ColorProperty`
instance and defaults to [1, 1, 1, 1].
.. versionchanged:: 2.0.0
Changed from :class:`~kivy.properties.ListProperty` to
:class:`~kivy.properties.ColorProperty`.
'''
def on_shape_color_key(self, instane, value):
self._set_shape(
shape_image=self.shape_image, mode=self.shape_mode,
cutoff=self.shape_cutoff, color_key=value
)
[docs] def get_gl_backend_name(self):
"""
Returns the gl backend that will or is used with this window.
"""
return cgl_get_backend_name(
allowed=self.gl_backends_allowed,
ignored=self.gl_backends_ignored)
def initialize_gl(self):
from kivy.core.gl import init_gl
init_gl(allowed=self.gl_backends_allowed,
ignored=self.gl_backends_ignored)
[docs] def create_window(self, *largs):
'''Will create the main window and configure it.
.. warning::
This method is called automatically at runtime. If you call it, it
will recreate a RenderContext and Canvas. This means you'll have a
new graphics tree, and the old one will be unusable.
This method exist to permit the creation of a new OpenGL context
AFTER closing the first one. (Like using runTouchApp() and
stopTouchApp()).
This method has only been tested in a unittest environment and
is not suitable for Applications.
Again, don't use this method unless you know exactly what you are
doing!
'''
# just to be sure, if the trigger is set, and if this method is
# manually called, unset the trigger
self.trigger_create_window.cancel()
# ensure the window creation will not be called twice
if platform in ('android', 'ios'):
self._unbind_create_window()
if not self.initialized:
self.initialize_gl()
# create the render context and canvas, only the first time.
from kivy.graphics import RenderContext, Canvas
self.render_context = RenderContext()
self.canvas = Canvas()
self.render_context.add(self.canvas)
else:
# if we get initialized more than once, then reload opengl state
# after the second time.
# XXX check how it's working on embed platform.
if platform == 'linux' or Window.__class__.__name__ == 'WindowSDL':
# on linux, it's safe for just sending a resize.
self.dispatch('on_pre_resize', *self.size)
else:
# on other platform, window are recreated, we need to reload.
from kivy.graphics.context import get_context
get_context().reload()
Clock.schedule_once(lambda x: self.canvas.ask_update(), 0)
self.dispatch('on_pre_resize', *self.size)
# ensure the gl viewport is correct
self.update_viewport()
[docs] def on_flip(self):
'''Flip between buffers (event)'''
self.flip()
[docs] def flip(self):
'''Flip between buffers'''
pass
def _update_childsize(self, instance, value):
self.update_childsize([instance])
[docs] def clear(self):
'''Clear the window with the background color'''
# XXX FIXME use late binding
from kivy.graphics.opengl import glClearColor, glClear, \
GL_COLOR_BUFFER_BIT, GL_DEPTH_BUFFER_BIT, GL_STENCIL_BUFFER_BIT
cc = self._clearcolor
if cc is not None:
glClearColor(*cc)
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT |
GL_STENCIL_BUFFER_BIT)
[docs] def set_title(self, title):
'''Set the window title.
.. versionadded:: 1.0.5
'''
self.title = title
[docs] def set_icon(self, filename):
'''Set the icon of the window.
.. versionadded:: 1.0.5
'''
self.icon = filename
def to_widget(self, x, y, initial=True, relative=False):
return (x, y)
def to_window(self, x, y, initial=True, relative=False):
return (x, y)
def _apply_transform(self, m):
return m
def get_window_matrix(self, x=0, y=0):
m = Matrix()
m.translate(x, y, 0)
return m
def get_root_window(self):
return self
def get_parent_window(self):
return self
def get_parent_layout(self):
return None
def on_draw(self):
self.clear()
self.render_context.draw()
[docs] def on_motion(self, etype, me):
'''Event called when a Motion Event is received.
:Parameters:
`etype`: str
One of 'begin', 'update', 'end'
`me`: :class:`~kivy.input.motionevent.MotionEvent`
The Motion Event currently dispatched.
'''
if me.is_touch:
w, h = self._get_effective_size()
me.scale_for_screen(w, h, rotation=self._rotation,
smode=self.softinput_mode,
kheight=self.keyboard_height)
if etype == 'begin':
self.dispatch('on_touch_down', me)
elif etype == 'update':
self.dispatch('on_touch_move', me)
elif etype == 'end':
self.dispatch('on_touch_up', me)
FocusBehavior._handle_post_on_touch_up(me)
[docs] def on_touch_down(self, touch):
'''Event called when a touch down event is initiated.
.. versionchanged:: 1.9.0
The touch `pos` is now transformed to window coordinates before
this method is called. Before, the touch `pos` coordinate would be
`(0, 0)` when this method was called.
'''
for w in self.children[:]:
if w.dispatch('on_touch_down', touch):
return True
[docs] def on_touch_move(self, touch):
'''Event called when a touch event moves (changes location).
.. versionchanged:: 1.9.0
The touch `pos` is now transformed to window coordinates before
this method is called. Before, the touch `pos` coordinate would be
`(0, 0)` when this method was called.
'''
for w in self.children[:]:
if w.dispatch('on_touch_move', touch):
return True
[docs] def on_touch_up(self, touch):
'''Event called when a touch event is released (terminated).
.. versionchanged:: 1.9.0
The touch `pos` is now transformed to window coordinates before
this method is called. Before, the touch `pos` coordinate would be
`(0, 0)` when this method was called.
'''
for w in self.children[:]:
if w.dispatch('on_touch_up', touch):
return True
def on_pre_resize(self, width, height):
key = (width, height)
if hasattr(self, '_last_resize') and self._last_resize == key:
return
self._last_resize = key
self.dispatch('on_resize', width, height)
[docs] def on_resize(self, width, height):
'''Event called when the window is resized.'''
self.update_viewport()
def on_move(self):
self.property('top').dispatch(self)
self.property('left').dispatch(self)
def update_viewport(self):
from kivy.graphics.opengl import glViewport
from kivy.graphics.transformation import Matrix
from math import radians
w, h = self.system_size
if self._density != 1:
w, h = self.size
smode = self.softinput_mode
target = self._system_keyboard.target
targettop = max(0, target.to_window(0, target.y)[1]) if target else 0
kheight = self._kheight
w2, h2 = w / 2., h / 2.
r = radians(self.rotation)
x, y = 0, 0
_h = h
if smode == 'pan':
y = kheight
elif smode == 'below_target':
y = 0 if kheight < targettop else (kheight - targettop)
if smode == 'scale':
_h -= kheight
# prepare the viewport
glViewport(x, y, w, _h)
# do projection matrix
projection_mat = Matrix()
projection_mat.view_clip(0.0, w, 0.0, h, -1.0, 1.0, 0)
self.render_context['projection_mat'] = projection_mat
# do modelview matrix
modelview_mat = Matrix().translate(w2, h2, 0)
modelview_mat = modelview_mat.multiply(Matrix().rotate(r, 0, 0, 1))
w, h = self.size
w2, h2 = w / 2., h / 2.
modelview_mat = modelview_mat.multiply(Matrix().translate(-w2, -h2, 0))
self.render_context['modelview_mat'] = modelview_mat
frag_modelview_mat = Matrix()
frag_modelview_mat.set(flat=modelview_mat.get())
self.render_context['frag_modelview_mat'] = frag_modelview_mat
# redraw canvas
self.canvas.ask_update()
# and update childs
self.update_childsize()
def update_childsize(self, childs=None):
width, height = self.size
if childs is None:
childs = self.children
for w in childs:
shw, shh = w.size_hint
shw_min, shh_min = w.size_hint_min
shw_max, shh_max = w.size_hint_max
if shw is not None and shh is not None:
c_w = shw * width
c_h = shh * height
if shw_min is not None and c_w < shw_min:
c_w = shw_min
elif shw_max is not None and c_w > shw_max:
c_w = shw_max
if shh_min is not None and c_h < shh_min:
c_h = shh_min
elif shh_max is not None and c_h > shh_max:
c_h = shh_max
w.size = c_w, c_h
elif shw is not None:
c_w = shw * width
if shw_min is not None and c_w < shw_min:
c_w = shw_min
elif shw_max is not None and c_w > shw_max:
c_w = shw_max
w.width = c_w
elif shh is not None:
c_h = shh * height
if shh_min is not None and c_h < shh_min:
c_h = shh_min
elif shh_max is not None and c_h > shh_max:
c_h = shh_max
w.height = c_h
for key, value in w.pos_hint.items():
if key == 'x':
w.x = value * width
elif key == 'right':
w.right = value * width
elif key == 'y':
w.y = value * height
elif key == 'top':
w.top = value * height
elif key == 'center_x':
w.center_x = value * width
elif key == 'center_y':
w.center_y = value * height
[docs] def screenshot(self, name='screenshot{:04d}.png'):
'''Save the actual displayed image to a file.
'''
i = 0
path = None
if name != 'screenshot{:04d}.png':
_ext = name.split('.')[-1]
name = ''.join((name[:-(len(_ext) + 1)], '{:04d}.', _ext))
while True:
i += 1
path = join(getcwd(), name.format(i))
if not exists(path):
break
return path
[docs] def on_rotate(self, rotation):
'''Event called when the screen has been rotated.
'''
pass
[docs] def on_close(self, *largs):
'''Event called when the window is closed.'''
Modules.unregister_window(self)
EventLoop.remove_event_listener(self)
[docs] def on_minimize(self, *largs):
'''Event called when the window is minimized.
.. versionadded:: 1.10.0
.. note::
This feature requires the SDL2 window provider.
'''
pass
[docs] def on_maximize(self, *largs):
'''Event called when the window is maximized.
.. versionadded:: 1.10.0
.. note::
This feature requires the SDL2 window provider.
'''
pass
[docs] def on_restore(self, *largs):
'''Event called when the window is restored.
.. versionadded:: 1.10.0
.. note::
This feature requires the SDL2 window provider.
'''
pass
[docs] def on_hide(self, *largs):
'''Event called when the window is hidden.
.. versionadded:: 1.10.0
.. note::
This feature requires the SDL2 window provider.
'''
pass
[docs] def on_show(self, *largs):
'''Event called when the window is shown.
.. versionadded:: 1.10.0
.. note::
This feature requires the SDL2 window provider.
'''
pass
[docs] def on_request_close(self, *largs, **kwargs):
'''Event called before we close the window. If a bound function returns
`True`, the window will not be closed. If the the event is triggered
because of the keyboard escape key, the keyword argument `source` is
dispatched along with a value of `keyboard` to the bound functions.
.. warning::
When the bound function returns True the window will not be closed,
so use with care because the user would not be able to close the
program, even if the red X is clicked.
'''
pass
[docs] def on_cursor_enter(self, *largs):
'''Event called when the cursor enters the window.
.. versionadded:: 1.9.1
.. note::
This feature requires the SDL2 window provider.
'''
pass
[docs] def on_cursor_leave(self, *largs):
'''Event called when the cursor leaves the window.
.. versionadded:: 1.9.1
.. note::
This feature requires the SDL2 window provider.
'''
pass
[docs] def on_mouse_down(self, x, y, button, modifiers):
'''Event called when the mouse is used (pressed/released).'''
pass
[docs] def on_mouse_move(self, x, y, modifiers):
'''Event called when the mouse is moved with buttons pressed.'''
pass
[docs] def on_mouse_up(self, x, y, button, modifiers):
'''Event called when the mouse is moved with buttons pressed.'''
pass
[docs] def on_joy_axis(self, stickid, axisid, value):
'''Event called when a joystick has a stick or other axis moved.
.. versionadded:: 1.9.0'''
pass
[docs] def on_joy_hat(self, stickid, hatid, value):
'''Event called when a joystick has a hat/dpad moved.
.. versionadded:: 1.9.0'''
pass
[docs] def on_joy_ball(self, stickid, ballid, xvalue, yvalue):
'''Event called when a joystick has a ball moved.
.. versionadded:: 1.9.0'''
pass
[docs] def on_keyboard(self, key, scancode=None, codepoint=None,
modifier=None, **kwargs):
'''Event called when keyboard is used.
.. warning::
Some providers may omit `scancode`, `codepoint` and/or `modifier`.
'''
if 'unicode' in kwargs:
Logger.warning("The use of the unicode parameter is deprecated, "
"and will be removed in future versions. Use "
"codepoint instead, which has identical "
"semantics.")
# Quit if user presses ESC or the typical OSX shortcuts CMD+q or CMD+w
# TODO If just CMD+w is pressed, only the window should be closed.
is_osx = platform == 'darwin'
if WindowBase.on_keyboard.exit_on_escape:
if key == 27 or all([is_osx, key in [113, 119], modifier == 1024]):
if not self.dispatch('on_request_close', source='keyboard'):
stopTouchApp()
self.close()
return True
if Config:
on_keyboard.exit_on_escape = Config.getboolean(
'kivy', 'exit_on_escape')
def __exit(section, name, value):
WindowBase.__dict__['on_keyboard'].exit_on_escape = \
Config.getboolean('kivy', 'exit_on_escape')
Config.add_callback(__exit, 'kivy', 'exit_on_escape')
[docs] def on_key_down(self, key, scancode=None, codepoint=None,
modifier=None, **kwargs):
'''Event called when a key is down (same arguments as on_keyboard)'''
if 'unicode' in kwargs:
Logger.warning("The use of the unicode parameter is deprecated, "
"and will be removed in future versions. Use "
"codepoint instead, which has identical "
"semantics.")
[docs] def on_key_up(self, key, scancode=None, codepoint=None,
modifier=None, **kwargs):
'''Event called when a key is released (same arguments as on_keyboard).
'''
if 'unicode' in kwargs:
Logger.warning("The use of the unicode parameter is deprecated, "
"and will be removed in future versions. Use "
"codepoint instead, which has identical "
"semantics.")
[docs] def on_textinput(self, text):
'''Event called when text: i.e. alpha numeric non control keys or set
of keys is entered. As it is not guaranteed whether we get one
character or multiple ones, this event supports handling multiple
characters.
.. versionadded:: 1.9.0
'''
pass
[docs] def on_dropfile(self, filename):
'''Event called when a file is dropped on the application.
.. warning::
This event currently works with sdl2 window provider, on pygame
window provider and OS X with a patched version of pygame.
This event is left in place for further evolution
(ios, android etc.)
.. versionadded:: 1.2.0
'''
pass
[docs] def on_memorywarning(self):
'''Event called when the platform have memory issue.
Your goal is to clear the cache in your app as much as you can,
release unused widgets, do garbage collection etc.
Currently, this event is fired only from the SDL2 provider, for
iOS and Android.
.. versionadded:: 1.9.0
'''
pass
[docs] def on_textedit(self, text):
'''Event called when inputting with IME.
The string inputting with IME is set as the parameter of
this event.
.. versionadded:: 1.10.1
'''
pass
@reify
def dpi(self):
'''Return the DPI of the screen. If the implementation doesn't support
any DPI lookup, it will just return 96.
.. warning::
This value is not cross-platform. Use
:attr:`kivy.base.EventLoop.dpi` instead.
'''
return 96.
def configure_keyboards(self):
# Configure how to provide keyboards (virtual or not)
# register system keyboard to listening keys from window
sk = self._system_keyboard
self.bind(
on_key_down=sk._on_window_key_down,
on_key_up=sk._on_window_key_up,
on_textinput=sk._on_window_textinput)
# use the device's real keyboard
self.use_syskeyboard = True
# use the device's real keyboard
self.allow_vkeyboard = False
# one single vkeyboard shared between all widgets
self.single_vkeyboard = True
# the single vkeyboard is always sitting at the same position
self.docked_vkeyboard = False
# now read the configuration
mode = Config.get('kivy', 'keyboard_mode')
if mode not in ('', 'system', 'dock', 'multi', 'systemanddock',
'systemandmulti'):
Logger.critical('Window: unknown keyboard mode %r' % mode)
# adapt mode according to the configuration
if mode == 'system':
self.use_syskeyboard = True
self.allow_vkeyboard = False
self.single_vkeyboard = True
self.docked_vkeyboard = False
elif mode == 'dock':
self.use_syskeyboard = False
self.allow_vkeyboard = True
self.single_vkeyboard = True
self.docked_vkeyboard = True
elif mode == 'multi':
self.use_syskeyboard = False
self.allow_vkeyboard = True
self.single_vkeyboard = False
self.docked_vkeyboard = False
elif mode == 'systemanddock':
self.use_syskeyboard = True
self.allow_vkeyboard = True
self.single_vkeyboard = True
self.docked_vkeyboard = True
elif mode == 'systemandmulti':
self.use_syskeyboard = True
self.allow_vkeyboard = True
self.single_vkeyboard = False
self.docked_vkeyboard = False
Logger.info(
'Window: virtual keyboard %sallowed, %s, %s' % (
'' if self.allow_vkeyboard else 'not ',
'single mode' if self.single_vkeyboard else 'multiuser mode',
'docked' if self.docked_vkeyboard else 'not docked'))
[docs] def set_vkeyboard_class(self, cls):
'''.. versionadded:: 1.0.8
Set the VKeyboard class to use. If set to `None`, it will use the
:class:`kivy.uix.vkeyboard.VKeyboard`.
'''
self._vkeyboard_cls = cls
[docs] def release_all_keyboards(self):
'''.. versionadded:: 1.0.8
This will ensure that no virtual keyboard / system keyboard is
requested. All instances will be closed.
'''
for key in list(self._keyboards.keys())[:]:
keyboard = self._keyboards[key]
if keyboard:
keyboard.release()
[docs] def request_keyboard(self, callback, target, input_type='text'):
'''.. versionadded:: 1.0.4
Internal widget method to request the keyboard. This method is rarely
required by the end-user as it is handled automatically by the
:class:`~kivy.uix.textinput.TextInput`. We expose it in case you want
to handle the keyboard manually for unique input scenarios.
A widget can request the keyboard, indicating a callback to call
when the keyboard is released (or taken by another widget).
:Parameters:
`callback`: func
Callback that will be called when the keyboard is
closed. This can be because somebody else requested the
keyboard or the user closed it.
`target`: Widget
Attach the keyboard to the specified `target`. This should be
the widget that requested the keyboard. Ensure you have a
different target attached to each keyboard if you're working in
a multi user mode.
.. versionadded:: 1.0.8
`input_type`: string
Choose the type of soft keyboard to request. Can be one of
'text', 'number', 'url', 'mail', 'datetime', 'tel', 'address'.
.. note::
`input_type` is currently only honored on mobile devices.
.. versionadded:: 1.8.0
:Return:
An instance of :class:`Keyboard` containing the callback, target,
and if the configuration allows it, a
:class:`~kivy.uix.vkeyboard.VKeyboard` instance attached as a
*.widget* property.
.. note::
The behavior of this function is heavily influenced by the current
`keyboard_mode`. Please see the Config's
:ref:`configuration tokens <configuration-tokens>` section for
more information.
'''
# release any previous keyboard attached.
self.release_keyboard(target)
# if we can use virtual vkeyboard, activate it.
if self.allow_vkeyboard:
keyboard = None
# late import
global VKeyboard
if VKeyboard is None and self._vkeyboard_cls is None:
from kivy.uix.vkeyboard import VKeyboard
self._vkeyboard_cls = VKeyboard
# if the keyboard doesn't exist, create it.
key = 'single' if self.single_vkeyboard else target
if key not in self._keyboards:
vkeyboard = self._vkeyboard_cls()
keyboard = Keyboard(widget=vkeyboard, window=self)
vkeyboard.bind(
on_key_down=keyboard._on_vkeyboard_key_down,
on_key_up=keyboard._on_vkeyboard_key_up,
on_textinput=keyboard._on_vkeyboard_textinput)
self._keyboards[key] = keyboard
else:
keyboard = self._keyboards[key]
# configure vkeyboard
keyboard.target = keyboard.widget.target = target
keyboard.callback = keyboard.widget.callback = callback
# add to the window
self.add_widget(keyboard.widget)
# only after add, do dock mode
keyboard.widget.docked = self.docked_vkeyboard
keyboard.widget.setup_mode()
else:
# system keyboard, just register the callback.
keyboard = self._system_keyboard
keyboard.callback = callback
keyboard.target = target
# use system (hardware) keyboard according to flag
if self.allow_vkeyboard and self.use_syskeyboard:
self.unbind(
on_key_down=keyboard._on_window_key_down,
on_key_up=keyboard._on_window_key_up,
on_textinput=keyboard._on_window_textinput)
self.bind(
on_key_down=keyboard._on_window_key_down,
on_key_up=keyboard._on_window_key_up,
on_textinput=keyboard._on_window_textinput)
return keyboard
[docs] def release_keyboard(self, target=None):
'''.. versionadded:: 1.0.4
Internal method for the widget to release the real-keyboard. Check
:meth:`request_keyboard` to understand how it works.
'''
if self.allow_vkeyboard:
key = 'single' if self.single_vkeyboard else target
if key not in self._keyboards:
return
keyboard = self._keyboards[key]
callback = keyboard.callback
if callback:
keyboard.callback = None
callback()
keyboard.target = None
self.remove_widget(keyboard.widget)
if key != 'single' and key in self._keyboards:
del self._keyboards[key]
elif self._system_keyboard.callback:
# this way will prevent possible recursion.
callback = self._system_keyboard.callback
self._system_keyboard.callback = None
callback()
return True
[docs] def grab_mouse(self):
'''Grab mouse - so won't leave window
.. versionadded:: 1.10.0
.. note::
This feature requires the SDL2 window provider.
'''
pass
[docs] def ungrab_mouse(self):
'''Ungrab mouse
.. versionadded:: 1.10.0
.. note::
This feature requires the SDL2 window provider.
'''
pass
#: Instance of a :class:`WindowBase` implementation
window_impl = []
if platform == 'linux' and (pi_version or 4) < 4:
window_impl += [('egl_rpi', 'window_egl_rpi', 'WindowEglRpi')]
if USE_SDL2:
window_impl += [('sdl2', 'window_sdl2', 'WindowSDL')]
else:
window_impl += [
('pygame', 'window_pygame', 'WindowPygame')]
if platform == 'linux':
window_impl += [('x11', 'window_x11', 'WindowX11')]
Window = core_select_lib('window', window_impl, True)
