invert application's window colors

For example Zoom doens't have a dark theme!

• color inversion of a single window
• search linux compton invert colors of window
• https://askubuntu.com/questions/134668/how-to-trigger-a-color-inversion-effect-for-one-window
• https://github.com/chjj/compton/blob/master/dbus-examples/inverter.sh

setup

1
2
3

wget -O ~/bin/compton-inverter.sh \
  https://github.com/chjj/compton/blob/master/dbus-examples/inverter.sh
chmod 755 ~/bin/compton-inverter.sh

• window manager tweaks > compositor > disable display compositing
• keyborad > shortcuts: /home/cloud/bin/compton-inverter.sh focused => Super+I
• session & startup > application autostart > compton-dbus /usr/bin/compton --dbus Run compton compositing manager

manual toggle

1
2
3
4
5

xprop | grep WM_CLASS  # and click on the desired window
# WM_CLASS(STRING) = "leafpad", "Leafpad"

pkill compton
compton --invert-color-include '(class_g="Leafpad" && class_i="leafpad")'

dbus toggle

1. Make a keyboard shortcut for the official script:
   • use inverter.sh focused to target current active window
   • use inverter.sh to select by mouse click
2. run compton --dbus
3. press the shortcut to apply it

Stores: Google Play, NeoStore, F-Droid, Droid-ify, Aurora (src)

To check

• CamScanner -- foto2pdf (by Diego)
• Unexpected-Keyboard
• FP4 alt. camera
  • Open Camera
  • GCam: wichaya, nikita
• Games:
  • lemuroid -- libretro emulator
  • lightblocks -- tetris clone for any device
  • Metal Slug: Awakening
• Librera Reader -- eBook and PDF reader
• MaterialFiles -- file manager
• Multi profiles:
  • Shelter -- Isolate and run multiple instances of apps using Work Profiles
  • MultiApp -- virtual Android container
• Phonograph -- material music player
• Image gallery:
  • IacobIonut01/Gallery / gh
• Goodwy apps / gh
• Audio Recorder
• FossifyOrg -- a SimpleMobileTools fork before acquisition
• Immich / hp / gh -- Self-hosted backup solution for photos and videos
• FV File Manager + Shizuku bridge -- workaround android 13 locking /Android/data
• Hermit lite apps browser -- hp
• WhatsApp Cleaner, gh
• Any Command -- windows remote control
• Aegis autenticator -- simile a freeotp+

General

• Add Country Code -- fix contacts
• AfterShip -- post tracking
• AndrOpen Office -- libre office port
• BigSMS
• CalcTape
• Catima -- carte fedeltà hp, fdroid
• Decathlon Coach -- home, esercizi da 10/15'/gg
• DeepL Translate
• Etar -- OpenSource Calendar
• Event Flow Widget
• Firefox focus
• Free-OTP+ / Free-OTP -- free TOTP autenticator
• Google Drive -- copy to clipboard share option
• KeePassDroid
• Classic notes lite -- notepad on steroids
• Trireme -- gh, deluge thin client (torrent)
• Nova Launcher + TeslaUnread -- unread badges
• Lightning browser
• Off+ -- turn off screen hack
• OperaMini
• Parcels -- shipment tracking
• Pixeful icon pack -- inexpensive icon pack (usable with Nova launcher)
• Pl@ntNet -- plant recognition
• Power Toggles
• QR Droid -- bar/qrcode scanner
• Right Contacts -- address book
• Right Dialer -- caller/phone
• Screen Off -- lock display widget
• Should I Answer? -- call spam blocker
• SMS Backup & Restore
• Sound Profile -- rich sound profile manager
• Sygic -- car navigator
• Telegram -- IM
• Textra -- customizable SMS app
• TouchPal -- very customizable multi-mode keyboard
• Vuze -- torrent downloader
• Wallabag -- save articles to read later
• WPS Office -- MSOffice compatible use AndrOpen Office

Media

• Aves / gh -- gallery
• Boldbeast Recorder / hp -- audio & call recorder
• BookReader -- ebook reader (epub, ecc) | hp
• Camera FV-5
• Flym feed reader, gh
• Handy Reading, gh -- Flym fork
• Image Toolbox, gh -- image/photo editor
• iMediaShare -- media caster
• KOreader -- hp, gh
• YouTube Vanced -- YT ad free + background play
• Perfect Viewer -- image viewer
• Piktures -- simple & powerful gallery
• Pulsar -- music player
• Radio alarm clock++
• Radio FM Italia
• Secure Camera perfetta!
• Simple Last.fm Scrobbler
• Smart Recorder -- audio recorder
• Snapseed -- rich image editor
• Sound Hound -- song search by your own whistles and voice!
• Spreaker -- podcasts
• VLC -- rich video player + DLNA renderer

Games

• Alien Vs Space invaders
• Day Off
• Destiny Child -- dedicated post
• Deus Ex Go
• Dungeon cards
• GamePad Tester -- test controller
• GRIS
• Hearts Free
• Higgster Games -- 21 free offline games
• Jelly Splash
• Lara Croft Go
• Legend of the moon -- shmup tipo Raiden2
• Live2DViewerEX -- steam license
• Picross Luna I & Picross Luna II
• Pigeon Pop, alt
• Progressbar95
• Puzzle Fighter
• Shattered Pixel Dungeon foss -- github, f-droid
• Snes9x EX+
• Williams Pinball -- flipper gratis, tanti tavoli identici agli originali
• Space Cadet Pinball
• --- to see ---
• Fist of the north star (Hokuto no Ken)
• Honkai Impact 3rd
• The King of Fighters ALLSTAR

System

• AccuBattery -- alert when reaching xx% charge level
• CPUz | Device Info HW
• DavX5 -- CalDAV, CardDav sync
• DiskUsage -- xdiskusage port
• GetEduroam -- unipd wifi config
• Ghost Commander -- TotalC./MC/NC foss clone
• Hacker's Keyboard -- full PC keyboard, gh, fork
• Heliboard -- opensource keyboard, gh
• JuiceSSH
• Knock on Ports -- port knocking
• Let's Print Droid -- CUPS client
• Let's Print PDF
• Open in browser
• OpenVPN
• Override DNS
• QuickEdit Pro -- fast text editor
• Quick Sync widget -- sync Google account
• Remote Ripple -- vnc viewer
• SANEDroid -- SANE client
• Shutdown (no Root) -- show shutdown menu
• Simple Mobile Tools -- replacements for all fundamental apps
• sockstun -- create a VPN via a Socks5 service
• SWAP - No ROOT
• Tasker -- homepage
• Termux
• Thunderbird -- ex K9
• Titanium backup
• Total commander -- rich file manager MC style
• Turbo VPN -- AD supported free VPN
• Wi-Fi on/off widget
• ZArchiver -- supports many archive types (7zip)

Home automation

• ~mydlink Home~ -- socket D-Link DSP-W215
• SmartLife -- rbg lamp LOFTer 10W
• TP-Link Tapo -- socket Tapo P100

Nova Launcher alternatives

From reddit & androidauthority: Smart Launcher, Lawnchair, Octopi, Hyperion, Niagara, Action, Kvaesitso, Pear

Svago

• Lucca Comics

Other lists: Retrial, Finalboss77

puma: thread based

• https://github.com/puma/puma

falcon: fiber based

• github.com/socketry/falcon
• rails integration example

kino: ractor based

• https://github.com/yaroslav/kino

Resolutions

• Sage: 1440x1920
• Glo: 758x1024

Developer mode / hidden settings

1. Type devmodeon in the searchbar, search and return to home screen
2. New menu entry apperars: Settings > Device Information > Developer options
3. Optional: type devmodeoff to disable it

NickelMenu / quick launcher

1. Download latest KoboRoot.tgz from home page/github
2. Connect Kobo to your PC
3. Put KoboRoot.tgz into KOBOeReader/.kobo
4. Eject your eReader and wait for it to reboot
5. Ensure there is a new menu item in the bottom-right main menu entitled NickelMenu
6. Connect Kobo to your PC again and create a file named KOBOeReader/.adds/nm/config, and follow the instructions in KOBOeReader/.adds/nm/doc to configure NickelMenu

Example:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42

menu_item :main    :Browser (fullscreen)  :nickel_browser     :
menu_item :main    :Browser (modal)       :nickel_browser     :modal

# KOreader: prevent Kobo from scanning hidden folders on 4.17+
# https://github.com/koreader/koreader/wiki/Installation-on-Kobo-devices#important-notes
# ==> append in ".kobo/Kobo/Kobo eReader.conf":
#   [FeatureSettings]
#   ExcludeSyncFolders=(\\.(?!kobo|adobe).+|([^.][^/]*/)+\\..+)
menu_item :main    :KOReader              :cmd_spawn          :quiet  :exec  /mnt/onboard/.adds/koreader/koreader.sh

menu_item :main    :Plato                 :cmd_spawn          :quiet  :/mnt/onboard/.adds/plato/plato.sh

menu_item :main    :Invert Screen         :nickel_orientation :invert
menu_item :main    :Sudoku                :nickel_extras      :sudoku
#menu_item :main    :Solitaire             :nickel_extras      :solitaire
#menu_item :main    :WordScramble          :nickel_extras      :word_scramble
#menu_item :main    :Dump Syslog           :cmd_spawn          :logread > /mnt/onboard/.adds/syslog.log

menu_item :main    :USB connect           :nickel_misc        :force_usb_connection
menu_item :main    :IP Address            :cmd_output         :500:/sbin/ifconfig | /usr/bin/awk '/inet addr/{print substr($2,6)}'
menu_item :main    :Telnet                :cmd_output         :500:quiet :/usr/bin/pkill -f "^/usr/bin/tcpsvd -E 0.0.0.0 2023"
  chain_success:skip:5
    chain_failure                         :cmd_spawn          :quiet :/bin/mount -t devpts | /bin/grep -q /dev/pts || { /bin/mkdir -p /dev/pts && /bin/mount -t devpts devpts /dev/pts; }
    chain_success                         :cmd_spawn          :quiet :exec /usr/bin/tcpsvd -E 0.0.0.0 2023 /usr/sbin/telnetd -i -l /bin/login
    chain_success                         :dbg_toast          :Started Telnet server on port 2023
    chain_failure                         :dbg_toast          :Error starting Telnet server on port 2023
    chain_always:skip:-1
  chain_success                           :dbg_toast          :Stopped Telnet server on port 2023
menu_item :main    :FTP                   :cmd_spawn          :quiet:/usr/bin/pkill -f "^/usr/bin/tcpsvd -E 0.0.0.0 1021" || true && exec /usr/bin/tcpsvd -E 0.0.0.0 1021 /usr/sbin/ftpd -w -t 30 /mnt/onboard
  chain_success                           :dbg_toast          :Started FTP server on port 1021.

menu_item :main    :Sleep                 :power              :sleep
#menu_item :main    :Reboot                :power              :reboot
menu_item :main    :Power Off             :power              :shutdown

menu_item :library :Import books          :nickel_misc        :rescan_books_full

menu_item :browser :Quit                  :nickel_misc        :home
menu_item :browser :Open modal            :nickel_browser     :modal
menu_item :browser :Invert Screen         :nickel_orientation :invert

menu_item :selection_search :WebSearch    :nickel_browser     :modal:https://duckduckgo.com/?q={1|S|%}

Notes: - FTP: user = root, pass = empty - Telnet: pass = none

KOReader / alternative reader, swiss knife

See the user guide and wiki, then follow install instructions:

1. Download the latest release from github
2. Connect Kobo to your PC
3. unzip -d /path/to/KOBOeReader/.adds/ koreader-kobo-v2023.04.zip

4. prevent Kobo from scanning hidden folders on 4.17+, append in .kobo/Kobo/Kobo eReader.conf:

   1 2	[FeatureSettings] ExcludeSyncFolders=(\\.(?!kobo|adobe).+|([^.][^/]*/)+\\..+)

5. add entry in NickelMenu, put in .adds/nm/config:

   1	menu_item :main :KOReader :cmd_spawn :quiet :exec /mnt/onboard/.adds/koreader/koreader.sh

6. Eject your eReader and enjoy

See also Rakuyomi online manga reader plugin.

From the user guide a command to optimize images for the ereader with ImageMagick:

1
2
3
4
5
6

convert input-image.ext \
  -colorspace Lab -filter LanczosSharp -distort Resize 1404x1872 \
  -colorspace sRGB -background white -gravity center -extent 1404x1872! \
  -grayscale Rec709Luminance -colorspace sRGB \
  -dither FloydSteinberg -remap _eink_cmap.gif \
  -quality 75 output-image.ext

_eink_cmap.gif is also attached to this post.

Plato / alternative reader

See the forum thread and NickelMenu entry:

1. Download the latest release from github
2. Connect Kobo to your PC
3. mkdir /path/to/KOBOeReader/.add/plato
4. unzip -d /path/to/KOBOeReader/.adds/plato/ plato-0.9.36.7z
5. prevent Kobo from scanning hidden folders on 4.17+, see KOReader instruction above

6. add entry in NickelMenu, put in .adds/nm/config:

   1	menu_item :main :Plato :cmd_spawn :quiet :/mnt/onboard/.adds/plato/plato.sh

7. Eject your eReader and enjoy

Misc tools

• KoboPatchUI, source -- only for Clara* for now
• kepubify -- EPUB to KEPUB converter written in Go (standalone executable)

QOL settings

• full reference

• enable screenshots by pressing power button (saves a PNG in kobo root dir), append in .kobo/Kobo/Kobo eReader.conf:

  1 2	[FeatureSettings] Screenshots=true

• auto accept the Computer detected popup when plugged into a computer and enable devmodeon:

  1 2 3

  [DeveloperSettings] AutoUsbGadget=true EnableDebugServices=true

• random screensaver (sleep/poweroff):

  1. put images in .kobo/screensaver
  2. Settings > Energy saving and privacy > check Show current read and Show book covers full screen

• manual reset procedure: Sage, Glo

Bluetooth page turner

From reddit posts 1, 2:

1. buy a Ring Remote Control
2. install https://github.com/tsowell/kobo-btpt

3. config file .adds/.btpt/D01 Pro:

   1 2	nextPage EV_KEY KEY_NEXTSONG 0 prevPage EV_KEY KEY_PREVIOUSSONG 0