Python kivy.clock.Clock.schedule_interval() Examples

def __init__(self, **kwargs):
        global cap, frame, frame_size

        # capture and render the first frame
        self.frame_size = frame_size
        frame = cap.read()
        image = cv2.flip(frame, 0)
        image = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)
        image = cv2.resize(image, frame_size)
        buf = image.tostring()
        self.image_texture = Texture.create(size=(image.shape[1], image.shape[0]), colorfmt='rgb')
        self.image_texture.blit_buffer(buf, colorfmt='rgb', bufferfmt='ubyte')

        # coordinates of Trashy
        self.t_x = 0
        self.t_y = 0

        self.current_user = 'No user yet'
        self.tickcount = 0
        self.labels = ["can", "bottle", "ken",
                       "grace", "frank", "tim", "shelly"]
        self.users = ["ken", "grace", "frank", "tim", "shelly"]

        super(MainView, self).__init__(**kwargs)
        Clock.schedule_interval(self.tick, 0.06) 

def on_enter(self):
        # Refresh the information when we load the screen
        Clock.schedule_once(self.get_buses, 0.5)

        # and schedule updates every 30 seconds.
        self.timer = Clock.schedule_interval(self.get_buses, 3)
        # We only need to update the clock every second.
        self.stimer = Clock.schedule_interval(self.update, 1) 

def _on_textinput_focused(self, instance, value, *largs):
        self.focus = value

        win = EventLoop.window
        self.cancel_selection()
        self._hide_cut_copy_paste(win)

        if value:
            if (not (self.readonly or self.disabled) or _is_desktop and
                self._keyboard_mode == 'system'):
                Clock.schedule_interval(self._do_blink_cursor, 1 / 2.)
                self._editable = True
            else:
                self._editable = False
        else:
            Clock.unschedule(self._do_blink_cursor)
            self._hide_handles(win) 

def start(win, ctx):
    # late import to avoid breaking module loading
    from kivy.input.postproc import kivy_postproc_modules
    kivy_postproc_modules['fps'] = StatsInput()
    global _ctx
    ctx.label = Label(text='FPS: 0.0')
    ctx.inputstats = 0
    ctx.stats = []
    ctx.statsr = []
    with win.canvas.after:
        ctx.color = Color(1, 0, 0, .5)
        ctx.rectangle = Rectangle(pos=(0, win.height - 25),
                                  size=(win.width, 25))
        ctx.color = Color(1, 1, 1)
        ctx.rectangle = Rectangle(pos=(5, win.height - 20))
        ctx.color = Color(1, 1, 1, .5)
        for x in range(64):
            ctx.stats.append(0)
            ctx.statsr.append(
                Rectangle(pos=(win.width - 64 * 4 + x * 4, win.height - 25),
                          size=(4, 0)))
    Clock.schedule_interval(partial(update_fps, ctx), .5)
    Clock.schedule_interval(partial(update_stats, ctx), 1 / 60.) 

def _update_files(self, *args, **kwargs):
        # trigger to start gathering the files in the new directory
        # we'll start a timer that will do the job, 10 times per frames
        # (default)
        self._gitems = []
        self._gitems_parent = kwargs.get('parent', None)
        self._gitems_gen = self._generate_file_entries(
            path=kwargs.get('path', self.path),
            parent=self._gitems_parent)

        # cancel any previous clock if exist
        Clock.unschedule(self._create_files_entries)

        # show the progression screen
        self._hide_progress()
        if self._create_files_entries():
            # not enough for creating all the entries, all a clock to continue
            # start a timer for the next 100 ms
            Clock.schedule_interval(self._create_files_entries, .1) 

def on_enter(self):

        if not self.running:

            # The screen hasn't been run before so let's tell the user
            # that we need to get the photos
            self.loading = PhotoLoading(name="loading")
            self.photoscreen.add_widget(self.loading)
            self.photoscreen.current = "loading"

            # Retrieve photos
            Clock.schedule_once(self.getPhotos, 0.5)

        else:
            # We've been here before so just show the photos
            self.timer = Clock.schedule_interval(self.showPhoto,
                                                 self.photoduration) 

def start(win, ctx):
    # late import to avoid breaking module loading
    from kivy.input.postproc import kivy_postproc_modules
    kivy_postproc_modules['fps'] = StatsInput()
    global _ctx
    ctx.label = Label(text='FPS: 0.0')
    ctx.inputstats = 0
    ctx.stats = []
    ctx.statsr = []
    with win.canvas.after:
        ctx.color = Color(1, 0, 0, .5)
        ctx.rectangle = Rectangle(pos=(0, win.height - 25),
                                  size=(win.width, 25))
        ctx.color = Color(1, 1, 1)
        ctx.rectangle = Rectangle(pos=(5, win.height - 20))
        ctx.color = Color(1, 1, 1, .5)
        for x in range(64):
            ctx.stats.append(0)
            ctx.statsr.append(
                Rectangle(pos=(win.width - 64 * 4 + x * 4, win.height - 25),
                          size=(4, 0)))
    Clock.schedule_interval(partial(update_fps, ctx), .5)
    Clock.schedule_interval(partial(update_stats, ctx), 1 / 60.) 

def build(self):
    self.handlingKey = False
    self.manager = ScanRoot()

    # Set up GPIO pin for foot pedal
    os.system("gpio export 21 up")
    wiringpi.wiringPiSetupSys()
    #wiringpi.pinMode(21, 0)
    #wiringpi.pullUpDnControl(21, 2)
    self.lastPedal = 0

    Clock.schedule_interval(self.update, 0.5)
    Clock.schedule_interval(self.checkPedal, 0.05)

    Window.bind(on_key_down=self.on_key_down)
    Window.bind(on_key_up=self.on_key_up)
    return self.manager 

def _update_files(self, *args, **kwargs):
        # trigger to start gathering the files in the new directory
        # we'll start a timer that will do the job, 10 times per frames
        # (default)
        self._gitems = []
        self._gitems_parent = kwargs.get('parent', None)
        self._gitems_gen = self._generate_file_entries(
            path=kwargs.get('path', self.path),
            parent=self._gitems_parent)

        # cancel any previous clock if exist
        Clock.unschedule(self._create_files_entries)

        # show the progression screen
        self._hide_progress()
        if self._create_files_entries():
            # not enough for creating all the entries, all a clock to continue
            # start a timer for the next 100 ms
            Clock.schedule_interval(self._create_files_entries, .1) 

def __init__(self, **kwargs):
        self._context = Context(init=True)
        self._context['ExceptionManager'] = SandboxExceptionManager(self)
        self._context.sandbox = self
        self._context.push()
        self.on_context_created()
        self._container = None
        super(Sandbox, self).__init__(**kwargs)
        self._container = SandboxContent(size=self.size, pos=self.pos)
        super(Sandbox, self).add_widget(self._container)
        self._context.pop()

        # force SandboxClock's scheduling
        Clock.schedule_interval(self._clock_sandbox, 0)
        Clock.schedule_once(self._clock_sandbox_draw, -1)
        self.main_clock = object.__getattribute__(Clock, '_obj') 

def _on_textinput_focused(self, instance, value, *largs):
        self.focus = value

        win = EventLoop.window
        self.cancel_selection()
        self._hide_cut_copy_paste(win)

        if value:
            if (not (self.readonly or self.disabled) or _is_desktop and
                self._keyboard_mode == 'system'):
                Clock.schedule_interval(self._do_blink_cursor, 1 / 2.)
                self._editable = True
            else:
                self._editable = False
        else:
            Clock.unschedule(self._do_blink_cursor)
            self._hide_handles(win) 

def start(self):
        self.ids.graph.add_plot(self.plot)
        Clock.schedule_interval(self.get_value, 0.001) 

def build(self):
        self.use_kivy_settings = False
        self.soundsOption = self.config.get('sound', 'soundsOption')
        self.musicOption = self.config.get('sound', 'musicOption')
        self.hardcoreOption = self.config.get('game', 'hardcoreOption')
        self.safe_options_loading()
        Clock.schedule_interval(self.update, 1. / 1.5)
        return self.content 

def _timer_start(self):
        # Need to stop it, otherwise we potentially leak a timer id that will
        # never be stopped.
        self._timer_stop()
        self._timer = Clock.schedule_interval(self._on_timer, self._interval / 1000.0) 

def start_timer(self, *args, **kwargs):
        """Schedule the timer update routine and fade in the progress bar."""
        Logger.debug("Starting timer")
        Clock.schedule_interval(self._update_timer, self.timer_interval)
        self.progress_bar.fade_in() 

def build(self):
        game = FlappyBirdGame()
        Clock.schedule_interval(game.update, 1.0/60.0)
        return game 

def __init__(self, **kwargs):
        from kivy.base import EventLoop
        EventLoop.ensure_window()
        self._invalid_scale = True
        self._tiles = []
        self._tiles_bg = []
        self._tilemap = {}
        self._layers = []
        self._default_marker_layer = None
        self._need_redraw_all = False
        self._transform_lock = False
        self.trigger_update(True)
        self.canvas = Canvas()
        self._scatter = MapViewScatter()
        self.add_widget(self._scatter)
        with self._scatter.canvas:
            self.canvas_map = Canvas()
            self.canvas_layers = Canvas()
        with self.canvas:
            self.canvas_layers_out = Canvas()
        self._scale_target_anim = False
        self._scale_target = 1.
        self._touch_count = 0
        self.map_source.cache_dir = self.cache_dir
        Clock.schedule_interval(self._animate_color, 1 / 60.)
        self.lat = kwargs.get("lat", self.lat)
        self.lon = kwargs.get("lon", self.lon)
        super(MapView, self).__init__(**kwargs) 

def __init__(self, **kwargs):
        self.mode = 'normal'
        super(TextInputCutCopyPaste, self).__init__(**kwargs)
        Clock.schedule_interval(self._check_parent, .5)
        self.matrix = self.textinput.get_window_matrix()

        with self.canvas.before:
            Callback(self.update_transform)
            PushMatrix()
            self.transform = Transform()

        with self.canvas.after:
            PopMatrix() 

def __init__(self, max_workers=None, cap_time=None, **kwargs):
        self.cache_dir = kwargs.get('cache_dir', CACHE_DIR)
        if max_workers is None:
            max_workers = Downloader.MAX_WORKERS
        if cap_time is None:
            cap_time = Downloader.CAP_TIME
        super(Downloader, self).__init__()
        self.is_paused = False
        self.cap_time = cap_time
        self.executor = ThreadPoolExecutor(max_workers=max_workers)
        self._futures = []
        Clock.schedule_interval(self._check_executor, 1 / 60.)
        if not exists(self.cache_dir):
            makedirs(self.cache_dir) 

def install_gobject_iteration():
    '''Import and install gobject context iteration inside our event loop.
    This is used as soon as gobject is used (like gstreamer).
    '''

    from kivy.clock import Clock

    try:
        from gi.repository import GObject as gobject
    except ImportError:
        import gobject

    if hasattr(gobject, '_gobject_already_installed'):
        # already installed, don't do it twice.
        return

    gobject._gobject_already_installed = True

    # get gobject mainloop / context
    loop = gobject.MainLoop()
    gobject.threads_init()
    context = loop.get_context()

    # schedule the iteration each frame
    def _gobject_iteration(*largs):
        # XXX we need to loop over context here, otherwise, we might have a lag
        loop = 0
        while context.pending() and loop < 10:
            context.iteration(False)
            loop += 1
    Clock.schedule_interval(_gobject_iteration, 0)


# -----------------------------------------------------------------------------
# Android support
# ----------------------------------------------------------------------------- 

def schedule_interval(self, callback, timeout):
        '''Schedule an event to be called every <timeout> seconds.

        :returns:

            A :class:`ClockEvent` instance. As opposed to
            :meth:`create_trigger` which only creates the trigger event, this
            method also schedules it.
        '''
        if not callable(callback):
            raise ValueError('callback must be a callable, got %s' % callback)
        event = ClockEvent(
            self, True, callback, timeout, self._last_tick, _hash(callback),
            True)
        return event 

def __init__(self, **kwargs):
        super(Inspector, self).__init__(**kwargs)
        self.avoid_bring_to_top = False
        self.win = kwargs.get('win')
        with self.canvas.before:
            self.gcolor = Color(1, 0, 0, .25)
            PushMatrix()
            self.gtranslate = Translate(0, 0, 0)
            self.grotate = Rotate(0, 0, 0, 1)
            self.gscale = Scale(1.)
            self.grect = Rectangle(size=(0, 0))
            PopMatrix()
        Clock.schedule_interval(self.update_widget_graphics, 0) 

def __init__(self, **kwargs):
        kwargs.setdefault('filename', None)
        kwargs.setdefault('eos', 'stop')
        kwargs.setdefault('async', True)
        kwargs.setdefault('autoplay', False)

        super(VideoBase, self).__init__()

        self._wantplay = False
        self._buffer = None
        self._filename = None
        self._texture = None
        self._volume = 1.
        self._state = ''

        self._autoplay = kwargs.get('autoplay')
        self._async = kwargs.get('async')
        self.eos = kwargs.get('eos')
        if self.eos == 'pause':
            Logger.warning("'pause' is deprecated. Use 'stop' instead.")
            self.eos = 'stop'
        self.filename = kwargs.get('filename')

        Clock.schedule_interval(self._update, 1 / 30.)

        if self._autoplay:
            self.play() 

def anim_reset(self, allow_anim):
        '''Reset an animation if available.

        .. versionadded:: 1.0.8

        :Parameters:
            `allow_anim`: bool
                Indicate whether the animation should restart playing or not.

        Usage::

            # start/reset animation
            image.anim_reset(True)

            # or stop the animation
            image.anim_reset(False)

        You can change the animation speed whilst it is playing::

            # Set to 20 FPS
            image.anim_delay = 1 / 20.

        '''
        # stop animation
        Clock.unschedule(self._anim)
        if allow_anim and self._anim_available:
            Clock.schedule_interval(self._anim, self.anim_delay)
            self._anim() 

def play(self):
        if not self._data:
            return
        self._data.set_volume(self.volume)
        self._channel = self._data.play()
        self.start_time = Clock.time()
        # schedule event to check if the sound is still playing or not
        Clock.schedule_interval(self._check_play, 0.1)
        super(SoundPygame, self).play() 

def request_keyboard(self, callback, target, input_type='text'):
        self._sdl_keyboard = super(WindowSDL, self).\
            request_keyboard(callback, target, input_type)
        self._win.show_keyboard()
        Clock.schedule_interval(self._check_keyboard_shown, 1 / 5.)
        return self._sdl_keyboard 

def start(self):
        super(CameraVideoCapture, self).start()
        Clock.unschedule(self._update)
        Clock.schedule_interval(self._update, self.fps) 

def start(self):
        super(CameraOpenCV, self).start()
        Clock.unschedule(self._update)
        Clock.schedule_interval(self._update, self.fps) 

def _clock_install(self):
        if self._clock_installed:
            return
        Clock.schedule_interval(self._update, self._step)
        self._clock_installed = True 

def install_gobject_iteration():
    '''Import and install gobject context iteration inside our event loop.
    This is used as soon as gobject is used (like gstreamer).
    '''

    from kivy.clock import Clock

    try:
        from gi.repository import GObject as gobject
    except ImportError:
        import gobject

    if hasattr(gobject, '_gobject_already_installed'):
        # already installed, don't do it twice.
        return

    gobject._gobject_already_installed = True

    # get gobject mainloop / context
    loop = gobject.MainLoop()
    gobject.threads_init()
    context = loop.get_context()

    # schedule the iteration each frame
    def _gobject_iteration(*largs):
        # XXX we need to loop over context here, otherwise, we might have a lag
        loop = 0
        while context.pending() and loop < 10:
            context.iteration(False)
            loop += 1
    Clock.schedule_interval(_gobject_iteration, 0)


# -----------------------------------------------------------------------------
# Android support
# -----------------------------------------------------------------------------