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ThomasFarstrikeThomasFarstrike
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Add file manager app
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5 files changed

+216
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‎internal_filesystem/apps/com.micropythonos.filemanager/META-INF/MANIFEST.JSON‎

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{
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"name": "File Manager",
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"publisher": "MicroPythonOS",
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"short_description": "Manage files",
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"long_description": "Traverse around the filesystem and manage files and folders you find..",
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"icon_url": "https://apps.micropythonos.com/apps/com.micropythonos.explorer/icons/com.micropythonos.filemanager.0.1_64x64.png",
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"download_url": "https://apps.micropythonos.com/apps/com.micropythonos.fileexplorer/mpks/com.micropythonos.filemanager.0.1.mpk",
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"fullname": "com.micropythonos.filemanager",
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"version": "0.0.1",
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"category": "development",
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"activities": [
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{
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"entrypoint": "assets/file_manager.py",
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"classname": "FileManager",
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"intent_filters": [
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{
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"action": "main",
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"category": "launcher"
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}
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]
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}
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]
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}
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‎internal_filesystem/apps/com.micropythonos.filemanager/assets/file_manager.py‎

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from mpos.apps import Activity
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import mpos.ui
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class FileManager(Activity):
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# Widgets:
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file_explorer = None
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def onCreate(self):
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#lv.log_register_print_cb(self.log_callback)
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screen = lv.obj()
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self.file_explorer = lv.file_explorer(screen)
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#self.file_explorer.set_root_path("M:data/images/")
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#self.file_explorer.explorer_open_dir('/')
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#self.file_explorer.explorer_open_dir('M:data/images/')
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#self.file_explorer.explorer_open_dir('M:/')
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self.file_explorer.explorer_open_dir('M:/')
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#self.file_explorer.explorer_open_dir('M:data/images/')
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#self.file_explorer.explorer_open_dir('P:.') # POSIX works, fs_driver doesn't because it doesn't have dir_open, dir_read, dir_close
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#self.file_explorer.explorer_open_dir('P:/tmp') # POSIX works, fs_driver doesn't because it doesn't have dir_open, dir_read, dir_close
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#file_explorer.explorer_open_dir('S:/')
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#self.file_explorer.set_size(lv.pct(100), lv.pct(100))
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#file_explorer.set_mode(lv.FILE_EXPLORER.MODE.DEFAULT) # Default browsing mode
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#file_explorer.set_sort(lv.FILE_EXPLORER.SORT.NAME_ASC) # Sort by name, ascending
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self.file_explorer.align(lv.ALIGN.CENTER, 0, 0)
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# Attach event callback
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self.file_explorer.add_event_cb(self.file_explorer_event_cb, lv.EVENT.ALL, None)
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self.setContentView(screen)
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def file_explorer_event_cb(self, event):
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event_code = event.get_code()
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# Ignore:
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# =======
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# 2: PRESSING
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# 19: HIT_TEST
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# COVER_CHECK
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# 24: REFR_EXT_DRAW_SIZE
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# DRAW_MAIN
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# DRAW_MAIN_BEGIN
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# DRAW_MAIN_END
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# DRAW_POST
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# DRAW_POST_BEGIN
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# DRAW_POST_END
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# GET_SELF_SIZE
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# 47 STYLE CHANGED
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if event_code not in [2,19,23,24,25,26,27,28,29,30,47,49]:
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name = mpos.ui.get_event_name(event_code)
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print(f"file_explorer_event_cb {event_code} with name {name}")
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if event_code == lv.EVENT.VALUE_CHANGED:
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path = self.file_explorer.explorer_get_current_path()
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file = self.file_explorer.explorer_get_selected_file_name()
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print(f"Selected: {path}{file}")
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# Custom log callback to capture FPS
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def log_callback(self, level, log_str):
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# Convert log_str to string if it's a bytes object
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log_str = log_str.decode() if isinstance(log_str, bytes) else log_str
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print(f"Level: {level}, Log: {log_str}")

‎internal_filesystem/lib/mpos/fs_driver.py‎

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# Original author: mhepp(https://forum.lvgl.io/u/mhepp/summary)
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# Copyright (c) 2024 - 2025 Kevin G. Schlosser
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# Added directory support, upstreamed at https://github.com/lvgl-micropython/lvgl_micropython/issues/398
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import lvgl as lv
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import struct
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def _fs_open_cb(drv, path, mode):
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if mode == lv.FS_MODE.WR:
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p_mode = 'wb'
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elif mode == lv.FS_MODE.RD:
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p_mode = 'rb'
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elif mode == lv.FS_MODE.WR | lv.FS_MODE.RD:
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p_mode = 'rb+'
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else:
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raise RuntimeError("fs_open_callback() - open mode error, %s is invalid mode" % mode)
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try:
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f = open(path, p_mode)
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except OSError as e:
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raise RuntimeError("fs_open_callback(%s) exception: %s" % (path, e))
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return {'file' : f, 'path': path}
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def _fs_close_cb(drv, fs_file):
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try:
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fs_file.__cast__()['file'].close()
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except OSError as e:
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raise RuntimeError("fs_close_callback(%s) exception: %s" % (fs_file.__cast__()['path'], e))
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return lv.FS_RES.OK
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def _fs_read_cb(drv, fs_file, buf, btr, br):
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try:
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tmp_data = fs_file.__cast__()['file'].read(btr)
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buf.__dereference__(btr)[0:len(tmp_data)] = tmp_data
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br.__dereference__(4)[0:4] = struct.pack("<L", len(tmp_data))
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except OSError as e:
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raise RuntimeError("fs_read_callback(%s) exception %s" % (fs_file.__cast__()['path'], e))
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return lv.FS_RES.OK
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def _fs_seek_cb(drv, fs_file, pos, whence):
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try:
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fs_file.__cast__()['file'].seek(pos, whence)
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except OSError as e:
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raise RuntimeError("fs_seek_callback(%s) exception %s" % (fs_file.__cast__()['path'], e))
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return lv.FS_RES.OK
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def _fs_tell_cb(drv, fs_file, pos):
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try:
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tpos = fs_file.__cast__()['file'].tell()
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pos.__dereference__(4)[0:4] = struct.pack("<L", tpos)
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except OSError as e:
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raise RuntimeError("fs_tell_callback(%s) exception %s" % (fs_file.__cast__()['path'], e))
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return lv.FS_RES.OK
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def _fs_write_cb(drv, fs_file, buf, btw, bw):
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try:
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wr = fs_file.__cast__()['file'].write(buf.__dereference__(btw)[0:btw])
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bw.__dereference__(4)[0:4] = struct.pack("<L", wr)
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except OSError as e:
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raise RuntimeError("fs_write_callback(%s) exception %s" % (fs_file.__cast__()['path'], e))
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return lv.FS_RES.OK
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def _fs_dir_open_cb(drv, path):
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#print(f"_fs_dir_open_cb for path '{path}'")
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try:
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import os # for ilistdir()
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return {'iterator' : os.ilistdir(path)}
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except Exception as e:
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print(f"_fs_dir_open_cb exception: {e}")
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return None
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def _fs_dir_read_cb(drv, lv_fs_dir_t, buf, btr):
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try:
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iterator = lv_fs_dir_t.__cast__()['iterator']
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nextfile = iterator.__next__()
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#print(f"nextfile: {nextfile}")
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filename = nextfile[0]
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entry_type = nextfile[1] # Type field
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if entry_type == 0x4000:
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#print(f"{filename} is a directory")
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filename = f"/{filename}"
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# Convert filename to bytes with null terminator
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tmp_data_bytes = filename.encode() + b'\x00'
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buf.__dereference__(btr)[0:len(tmp_data_bytes)] = tmp_data_bytes
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return lv.FS_RES.OK
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except StopIteration:
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# Clear buffer and return FS_ERR when iteration ends
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buf.__dereference__(btr)[0:1] = b'\x00' # Empty string (null byte)
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return lv.FS_RES.NOT_EX # Next entry "does not exist"
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except Exception as e:
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print(f"_fs_dir_read_cb exception: {e}")
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return lv.FS_RES.UNKNOWN
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def _fs_dir_close_cb(drv, lv_fs_dir_t):
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#print(f"_fs_dir_close_cb called")
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# No need to cleanup the iterator so nothing to do
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return lv.FS_RES.OK
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def fs_register(fs_drv, letter, cache_size=500):
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fs_drv.init()
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fs_drv.letter = ord(letter)
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fs_drv.open_cb = _fs_open_cb
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fs_drv.read_cb = _fs_read_cb
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fs_drv.write_cb = _fs_write_cb
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fs_drv.seek_cb = _fs_seek_cb
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fs_drv.tell_cb = _fs_tell_cb
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fs_drv.close_cb = _fs_close_cb
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fs_drv.dir_open_cb = _fs_dir_open_cb
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fs_drv.dir_read_cb = _fs_dir_read_cb
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#fs_drv.dir_close_cb = _fs_dir_close_cb
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if cache_size >= 0:
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fs_drv.cache_size = cache_size
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fs_drv.register()
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‎internal_filesystem/lib/mpos/ui/__init__.py‎

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#import utime # for time profiling
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import lvgl as lv
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import mpos.apps
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import mpos.battery_voltage

‎internal_filesystem/main.py‎

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import lvgl as lv
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# Allow LVGL M:/path/to/file or M:relative/path/to/file to work for image set_src etc
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import fs_driver
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import mpos.fs_driver
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fs_drv = lv.fs_drv_t()
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fs_driver.fs_register(fs_drv, 'M')
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mpos.fs_driver.fs_register(fs_drv, 'M')
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import mpos.apps
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import mpos.config

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