def emit(self, message): # during the startup, store the message in the history if Logger.logfile_activated is None: FileHandler.history += [message] return # startup done, if the logfile is not activated, avoid history. if Logger.logfile_activated is False: FileHandler.history = [] return if FileHandler.fd is None: try: self._configure() from kivy.config import Config Config.add_callback(self._configure, 'kivy', 'log_dir') Config.add_callback(self._configure, 'kivy', 'log_name') except Exception: # deactivate filehandler... FileHandler.fd = False Logger.exception('Error while activating FileHandler logger') return while FileHandler.history: _message = FileHandler.history.pop() self._write_message(_message) self._write_message(message)
class WindowBase(EventDispatcher): '''WindowBase is an abstract window widget for any window implementation. :Parameters: `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. :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. `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 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`: str Fired when a file is dropped on the application. .. versionchanged:: 1.9.0 `on_request_close` has been added. ''' __instance = None __initialized = False # private properties _size = ListProperty([0, 0]) _modifiers = ListProperty([]) _rotation = NumericProperty(0) _clearcolor = ObjectProperty([0, 0, 0, 1]) 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() def _get_modifiers(self): return self._modifiers modifiers = AliasProperty(_get_modifiers, None) '''List of keyboard modifiers currently active. ''' def _get_size(self): r = self._rotation w, h = self._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_resize', *size) return True else: return False size = AliasProperty(_get_size, _set_size, bind=('_size', )) '''Get the rotated size of the window. If :attr:`rotation` is set, then the size will change to reflect the rotation. ''' 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). ''' # make some property read-only def _get_width(self): r = self._rotation if r == 0 or r == 180: return self._size[0] return self._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 kb = self.keyboard_height if self.softinput_mode == 'resize' else 0 if r == 0 or r == 180: return self._size[1] - kb return self._size[0] - kb height = AliasProperty(_get_height, None, bind=('_rotation', '_size')) '''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, None, bind=('width', 'height')) '''Center of the rotated window. :attr:`center` is a :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 self.initialized is False: return self.dispatch('on_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. ''' softinput_mode = OptionProperty('', options=('', 'pan', 'scale', 'resize')) '''This specifies the behavior of window contents on display of soft keyboard on mobile platform. Can be one of '', 'pan', 'scale', 'resize'. When '' The main window is left as it is allowing the user to use :attr:`keyboard_height` to manage the window contents the way they want. when 'pan' The main window pans moving the bottom part of the window to be always on top of the keyboard. when 'resize' The window is resized and the contents scaled to fit the remaining space. ..versionadded::1.9.0 :attr:`softinput_mode` is a :class:`OptionProperty` defaults to None. ''' _keyboard_changed = BooleanProperty(False) def _upd_kbd_height(self, *kargs): self._keyboard_changed = not self._keyboard_changed def _get_ios_kheight(self): return 0 def _get_android_kheight(self): 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, None, bind=('_keyboard_changed',)) '''Rerturns the height of the softkeyboard/IME on mobile platforms. Will return 0 if not on mobile platform or if IME is not active. ..versionadded:: 1.9.0 :attr:`keyboard_height` is a read-only :class:`AliasProperty` 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', )) '''Real size of the window ignoring rotation. ''' fullscreen = OptionProperty(False, options=(True, False, 'auto', 'fake')) '''This property sets the fullscreen mode of the window. Available options are: True, False, 'auto', 'fake'. Check the :mod:`~kivy.config` documentation for a more detailed explanation on the values. .. versionadded:: 1.2.0 ''' mouse_pos = ObjectProperty([0, 0]) '''2d position of the mouse within the window. .. versionadded:: 1.2.0 ''' @property def __self__(self): return self top = NumericProperty(None, allownone=True) left = NumericProperty(None, allownone=True) position = OptionProperty('auto', options=['auto', 'custom']) render_context = ObjectProperty(None) canvas = ObjectProperty(None) title = StringProperty('Kivy') __events__ = ('on_draw', 'on_flip', 'on_rotate', 'on_resize', 'on_close', '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_dropfile', 'on_request_close') def __new__(cls, **kwargs): if cls.__instance is None: cls.__instance = EventDispatcher.__new__(cls) return cls.__instance def __init__(self, **kwargs): kwargs.setdefault('force', False) # don't init window 2 times, # except if force is specified if WindowBase.__instance is not None and not kwargs.get('force'): return self.initialized = False # 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) # set the default window parameter according to the configuration if 'fullscreen' not in kwargs: fullscreen = Config.get('graphics', 'fullscreen') if fullscreen not in ('auto', 'fake'): fullscreen = fullscreen.lower() in ('true', '1', 'yes', 'yup') 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 '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' kwargs['top'] = kwargs['top'] else: kwargs['top'] = Config.getint('graphics', 'top') if 'left' in kwargs: kwargs['position'] = 'custom' kwargs['left'] = kwargs['left'] else: kwargs['left'] = Config.getint('graphics', 'left') kwargs['_size'] = (kwargs.pop('width'), kwargs.pop('height')) super(WindowBase, self).__init__(**kwargs) # bind all the properties that need to recreate the window for prop in ( 'fullscreen', 'position', 'top', 'left', '_size', 'system_size'): self.bind(**{prop: self.trigger_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()) # 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() # attach modules + listener event EventLoop.set_window(self) Modules.register_window(self) EventLoop.add_event_listener(self) # 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 toggle_fullscreen(self): '''Toggle fullscreen on window''' pass def close(self): '''Close the window''' pass 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 Clock.unschedule(self.create_window) if not self.initialized: from kivy.core.gl import init_gl init_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_resize', *self.system_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_resize', *self.system_size) # ensure the gl viewport is correct self.update_viewport() def on_flip(self): '''Flip between buffers (event)''' self.flip() def flip(self): '''Flip between buffers''' pass def _update_childsize(self, instance, value): self.update_childsize([instance]) def add_widget(self, widget): '''Add a widget to a window''' widget.parent = self self.children.insert(0, widget) self.canvas.add(widget.canvas) self.update_childsize([widget]) widget.bind( pos_hint=self._update_childsize, size_hint=self._update_childsize, size=self._update_childsize, pos=self._update_childsize) def remove_widget(self, widget): '''Remove a widget from a window ''' if not widget in self.children: return self.children.remove(widget) self.canvas.remove(widget.canvas) widget.parent = None widget.unbind( pos_hint=self._update_childsize, size_hint=self._update_childsize, size=self._update_childsize, pos=self._update_childsize) 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) def set_title(self, title): '''Set the window title. .. versionadded:: 1.0.5 ''' self.title = title 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 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() 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.system_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) 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 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 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_resize(self, width, height): '''Event called when the window is resized.''' self.update_viewport() 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 smode = self.softinput_mode kheight = self.keyboard_height w2, h2 = w / 2., h / 2. r = radians(self.rotation) x, y = 0, 0 _h = h if smode: y = kheight 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 # 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 if shw and shh: w.size = shw * width, shh * height elif shw: w.width = shw * width elif shh: w.height = shh * height 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 def screenshot(self, name='screenshot{:04d}.png'): '''Save the actual displayed image in 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 def on_rotate(self, rotation): '''Event called when the screen has been rotated. ''' pass def on_close(self, *largs): '''Event called when the window is closed''' Modules.unregister_window(self) EventLoop.remove_event_listener(self) 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 def on_mouse_down(self, x, y, button, modifiers): '''Event called when the mouse is used (pressed/released)''' pass def on_mouse_move(self, x, y, modifiers): '''Event called when the mouse is moved with buttons pressed''' pass def on_mouse_up(self, x, y, button, modifiers): '''Event called when the mouse is moved with buttons pressed''' pass 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') 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.") 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.") def on_dropfile(self, filename): '''Event called when a file is dropped on the application. .. warning:: This event is currently used only on MacOSX with a patched version of pygame, but is left in place for further evolution (ios, android etc.) .. versionadded:: 1.2.0 ''' 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) # 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')) 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 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() 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) 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) self.bind( on_key_down=keyboard._on_window_key_down, on_key_up=keyboard._on_window_key_up) return keyboard 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