Cornus - a fast file browser for KDE Linux written in C++17 and Qt5.

Requirements: Linux 5.5+, Qt 5.15.2+

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Warning: the Qt Wayland backend is broken, i.e. the clipboard doesn't work.

The Qt devs have to fix their toolkit.

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Building on Ubuntu, install Qt5 (used to be called qt5-default):

• sudo apt-get install qtbase5-dev qtchooser qt5-qmake qtbase5-dev-tools

Then the other dependencies:

• sudo apt-get install libwebp-dev libwebm-dev libdbus-c++-dev libudev-dev libudisks2-dev libzstd-dev libmtp-dev libpolkit-gobject-1-dev libpolkit-agent-1-dev mkvtoolnix cmake ark git

And build it:

• mkdir build && cd build
• cmake ..
• make -j4

The file browser executable is "cornus", "cornus_io" is the IO daemon that is started automatically when needed. To have a .desktop launcher on your desktop - update the file at export/cornus_mas.desktop (the "Icon" and "Exec" fields) accordingly and copy this file to your desktop folder.

Major TODO items:

• Icons View mode (currently in development)
• MTP to deal with Android devices

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Screenshot with dark theme:

Screenshot with light theme:

Things you should know:

• Files with the executable bit set are marked green.
• To set a default app to open a given type of file right click a file -> Open With -> Preferences...
• To see the tree of links of a symbolic link - when in details view click the icon of the link.
• Press 'D' after selecting a non-folder to display its contents (or click its icon). The built-in text editor is meant for a quick update of its contents or a glean into the file, not as a full blown text editor. Files' contents unrecognized as text files are opened in read-only mode.
• Shift+Delete = delete permanently, Delete = move to trash.
• A grey dot near the icon of the file means the file has extended attributes, a blue one means it has media related extended attributes.
• To launch Cornus from the command line and get it to select a folder at startup:
  To select the folder "Documents" from ${HOME}:
  cornus ${HOME} --select Documents
  or
  cornus ${HOME} --select "My Folder With Whitespaces"
  To select "File.txt" from ${HOME}:
  cornus ${HOME}/File.txt
  or:
  cornus ${HOME} --select File.txt
  or:
  cornus ${HOME} --select "My File With Whitespaces.txt"
  
• You can easily set your own icons for files of different types by dropping an icon into the "file_icons" folder with the proper extension as its name, browse the folder "file_icons" to see what I mean, probably located at "/usr/share/cornus/file_icons".
• File icons are loaded from "$HOME/.config/CornusMas/file_icons", then if not found from "/usr/share/cornus/file_icons".