# SPDX-License-Identifier: LGPL-3.0-or-later # Copyright (C) 2020 Daniel Thompson """Widget library ~~~~~~~~~~~~~~~~~ The widget library allows common fragments of logic and drawing code to be shared between applications. """ import fonts import icons import wasp import watch from micropython import const class BatteryMeter: """Battery meter widget. A simple battery meter with a charging indicator, will draw at the top-right of the display. """ def __init__(self): self.level = -2 def draw(self): """Draw from meter (from scratch).""" self.level = -2 self.update() def update(self): """Update the meter. The update is lazy and won't redraw unless the level has changed. """ icon = icons.battery draw = watch.drawable if watch.battery.charging(): if self.level != -1: draw.rleblit(icon, pos=(239-icon[0], 0), fg=0x7bef) self.level = -1 else: level = watch.battery.level() if level == self.level: return if level > 96: h = 24 rgb = 0x07e0 else: h = level // 4 green = level // 3 red = 31-green rgb = (red << 11) + (green << 6) if (level > 5) ^ (self.level > 5): if level > 5: draw.rleblit(icon, pos=(239-icon[0], 0), fg=0x7bef) else: rgb = 0xf800 draw.rleblit(icon, pos=(239-icon[0], 0), fg=0xf800) x = 239 - 30 w = 16 if 24 - h: draw.fill(0, x, 14, w, 24 - h) if h: draw.fill(rgb, x, 38 - h, w, h) self.level = level class Clock: """Small clock widget.""" def __init__(self, enabled=True): self.on_screen = None self.enabled = enabled def draw(self): """Redraw the clock from scratch. The container is required to clear the canvas prior to the redraw and the clock is only drawn if it is enabled. """ self.on_screen = None self.update() def update(self): """Update the clock widget if needed. This is a lazy update that only redraws if the time has changes since the last call *and* the clock is enabled. :returns: An time tuple if the time has changed since the last call, None otherwise. """ now = wasp.watch.rtc.get_localtime() on_screen = self.on_screen if on_screen and on_screen == now: return None if self.enabled and (not on_screen or now[4] != on_screen[4]): t1 = '{:02}:{:02}'.format(now[3], now[4]) draw = wasp.watch.drawable draw.set_font(fonts.sans28) draw.set_color(0xe73c) draw.string(t1, 52, 12, 138) self.on_screen = now return now class NotificationBar: """Show BT status and if there are pending notifications.""" def __init__(self, x=8, y=8): self._pos = (x, y) def draw(self): """Update the notification widget. For this simple widget :py:meth:`~.draw` is simply a synonym for :py:meth:`~.update`. """ self.update() def update(self): """Update the widget. """ draw = watch.drawable (x, y) = self._pos if wasp.watch.connected(): draw.blit(icons.blestatus, x, y, fg=0x7bef) if wasp.system.notifications: draw.blit(icons.notification, x+24, y, fg=0x7bef) else: draw.fill(0, x+24, y, 32, 32) elif wasp.system.notifications: draw.blit(icons.notification, x, y, fg=0x7bef) draw.fill(0, x+32, y, 32, 32) else: draw.fill(0, x, y, 56, 32) class ScrollIndicator: """Scrolling indicator. A pair of arrows that prompted the user to swipe up/down to access additional pages of information. """ def __init__(self, x=240-18, y=240-24): self._pos = (x, y) self.up = True self.down = True def draw(self): """Draw from scrolling indicator. For this simple widget :py:meth:`~.draw` is simply a synonym for :py:meth:`~.update`. """ self.update() def update(self): """Update from scrolling indicator.""" draw = watch.drawable if self.up: draw.rleblit(icons.up_arrow, pos=self._pos, fg=0x7bef) if self.down: draw.rleblit(icons.down_arrow, pos=(self._pos[0], self._pos[1] + 13), fg=0x7bef) _SLIDER_KNOB_DIAMETER = const(40) _SLIDER_KNOB_RADIUS = const(_SLIDER_KNOB_DIAMETER // 2) _SLIDER_WIDTH = const(220) _SLIDER_TRACK = const(_SLIDER_WIDTH - _SLIDER_KNOB_DIAMETER) _SLIDER_TRACK_HEIGHT = const(8) _SLIDER_TRACK_Y1 = const(_SLIDER_KNOB_RADIUS - (_SLIDER_TRACK_HEIGHT // 2)) _SLIDER_TRACK_Y2 = const(_SLIDER_TRACK_Y1 + _SLIDER_TRACK_HEIGHT) class Slider(): """A slider to select values.""" def __init__(self, steps, x=10, y=90, color=0x39ff): self.value = 0 self._steps = steps self._stepsize = _SLIDER_TRACK / (steps-1) self._x = x self._y = y self._color = color # Automatically generate a lowlight color if color < 0b10110_000000_00000: color = (color | 0b10110_000000_00000) & 0b10110_111111_11111 if (color & 0b111111_00000) < 0b101100_00000: color = (color | 0b101100_00000) & 0b11111_101100_11111 if (color & 0b11111) < 0b10110: color = (color | 0b11000) & 0b11111_111111_10110 self._lowlight = color def draw(self): """Draw the slider.""" draw = watch.drawable x = self._x y = self._y color = self._color light = self._lowlight knob_x = x + ((_SLIDER_TRACK * self.value) // (self._steps-1)) draw.blit(icons.knob, knob_x, y, color) w = knob_x - x if w > 0: draw.fill(0, x, y, w, _SLIDER_TRACK_Y1) if w > _SLIDER_KNOB_RADIUS: draw.fill(0, x, y+_SLIDER_TRACK_Y1, _SLIDER_KNOB_RADIUS, _SLIDER_TRACK_HEIGHT) draw.fill(color, x+_SLIDER_KNOB_RADIUS, y+_SLIDER_TRACK_Y1, w-_SLIDER_KNOB_RADIUS, _SLIDER_TRACK_HEIGHT) else: draw.fill(0, x, y+_SLIDER_TRACK_Y1, w, _SLIDER_TRACK_HEIGHT) draw.fill(0, x, y+_SLIDER_TRACK_Y2, w, _SLIDER_TRACK_Y1) sx = knob_x + _SLIDER_KNOB_DIAMETER w = _SLIDER_WIDTH - _SLIDER_KNOB_DIAMETER - w if w > 0: draw.fill(0, sx, y, w, _SLIDER_TRACK_Y1) if w > _SLIDER_KNOB_RADIUS: draw.fill(0, sx+w-_SLIDER_KNOB_RADIUS, y+_SLIDER_TRACK_Y1, _SLIDER_KNOB_RADIUS, _SLIDER_TRACK_HEIGHT) draw.fill(light, sx, y+_SLIDER_TRACK_Y1, w-_SLIDER_KNOB_RADIUS, _SLIDER_TRACK_HEIGHT) else: draw.fill(0, sx, y+_SLIDER_TRACK_Y1, w, _SLIDER_TRACK_HEIGHT) draw.fill(0, sx, y+_SLIDER_TRACK_Y2, w, _SLIDER_TRACK_Y1) def update(self): self.draw() def touch(self, event): tx = event[1] threshold = self._x + 20 - (self._stepsize / 2) v = int((tx - threshold) / self._stepsize) if v < 0: v = 0 elif v >= self._steps: v = self._steps - 1 self.value = v