97 lines
2.5 KiB
Python
97 lines
2.5 KiB
Python
# SPDX-License-Identifier: LGPL-3.0-or-later
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# Copyright (C) 2020 Daniel Thompson
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"""Application launcher
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~~~~~~~~~~~~~~~~~~~~~~~
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"""
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import wasp
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import icons
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class LauncherApp():
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"""An application launcher application.
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.. figure:: res/LauncherApp.png
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:width: 179
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Screenshot of the application launcher
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"""
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NAME = 'Launcher'
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ICON = icons.app
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def __init__(self):
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self._scroll = wasp.widgets.ScrollIndicator(y=6)
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def foreground(self):
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"""Activate the application."""
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self._page = 0
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self._draw()
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wasp.system.request_event(wasp.EventMask.TOUCH |
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wasp.EventMask.SWIPE_UPDOWN)
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def swipe(self, event):
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i = self._page
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n = self._num_pages
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if event[0] == wasp.EventType.UP:
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i += 1
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if i >= n:
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i -= 1
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wasp.watch.vibrator.pulse()
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return
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else:
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i -= 1
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if i < 0:
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wasp.system.switch(wasp.system.quick_ring[0])
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return
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self._page = i
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wasp.watch.display.mute(True)
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self._draw()
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wasp.watch.display.mute(False)
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def touch(self, event):
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page = self._get_page(self._page)
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x = event[1]
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y = event[2]
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app = page[2 * (y // 120) + (x // 120)]
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if app:
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wasp.system.switch(app)
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else:
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wasp.watch.vibrator.pulse()
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@property
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def _num_pages(self):
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"""Work out what the highest possible pages it."""
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num_apps = len(wasp.system.launcher_ring)
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return (num_apps + 3) // 4
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def _get_page(self, i):
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apps = wasp.system.launcher_ring
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page = apps[4*i: 4*(i+1)]
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while len(page) < 4:
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page.append(None)
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return page
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def _draw(self):
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"""Redraw the display from scratch."""
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def draw_app(app, x, y):
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if not app:
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return
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draw.blit(app.ICON if 'ICON' in dir(app) else icons.app, x+13, y+12)
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draw.set_color(wasp.system.theme('mid'))
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draw.string(app.NAME, x, y+120-30, 120)
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draw = wasp.watch.drawable
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page_num = self._page
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page = self._get_page(page_num)
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draw.fill()
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draw_app(page[0], 0, 0)
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draw_app(page[1], 120, 0)
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draw_app(page[2], 0, 120)
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draw_app(page[3], 120, 120)
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scroll = self._scroll
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scroll.up = page_num > 0
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scroll.down = page_num < (self._num_pages-1)
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scroll.draw()
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