Please, review the MacOS specific part about middle mouse click

Keyboard Shortcuts

This page lists the default keyboard shortcuts of the JOSM core. Some plugins may add own shortcuts or may override other shortcuts.

All active shortcuts of your JOSM installation are listed in the Keyboard Shortcuts register of the Preferences dialog. In that register you can set personal keyboard shortcuts of your choosing.

Every button and menu item in JOSM may be assigned with a shortcut. This includes menu items provided by plugins, popular presets and saved search queries.

Some Working modes offer modifier keys (Shift, Ctrl or Alt) to change the behavior of the next mouse click in the Mapview. These modifiers are similar to shortcuts and some are listed below. But they can not be changed in the Keyboard Shortcuts register.

The JOSM Help pages note the keyboard shortcuts with their face on the keyboard. For example J means the simple keystroke which usually gives a lower case letter "j". An additional modifier key is noted in advance. E.g. Shift+J means holding the Shift key and then stroking the J key. This would usually give the upper case letter "J".

Annotated diagram

An annotated diagram of keyboard shortcuts is offered, see ​Announcement at user blogs ​png version with ​svg source

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Was explained at Sidebar.

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Platform specific caveats

Middle mouse button

Mac OS

There's no button that works as a middle button like with UNIX. You can use the middle button with an ​Apple Mouse. Connect Apple Mouse, Open System Preferences, click "Keyboard and Mouse" and configure the Ball button as "button 3". Then it can be used as the middle button. Note that you cannot configure other buttons as "button 3" with the Apple Driver. Maybe you can find a more useful mouse driver for this purpose.

An alternative is to run the open-source the MiddleClick program from ​https://github.com/artginzburg/MiddleClick-Ventura/releases. It allows you to emulate a middle button with a three (or more) finger click on the trackpad.

Alt key

Alt key is used by Compiz to move windows on Ubuntu

It's likely the Alt key combination is caught before it is passed to JOSM.

Steps below tested with Ubuntu 16.04 LTS:

• ​https://askubuntu.com/questions/224342/change-window-managers-altdrag

GNOME DE

In ​gnome desktop environment Alt-Click is used for moving the window. The AltGr key can be used instead; note that on some keyboards the AltGr key is simply the right-hand Alt key.

GNOME or MATE

Linux may use the left-Alt key as a mouse modifier, which will annoyingly compel Improve Way Accuracy mode to use right-Alt to delete nodes. ​Here is an article explaining how to reassign that Alt key in Gnome (or MATE), freeing it up for IWAM application usage. <Super> is "Windows key".

Alt+F2 → dconf-editor.
Click through org → gnome → desktop → wm → preferences → mouse-button-modifier → Set it to whichever key you like. e.g. <Super> or <Control><Alt> or <Alt><Super>

KDE

In some Linux desktop environment (e.g. KDE) the Alt-click event is captured to perform actions like dragging the window across the screen. To reclaim this combination to JOSM you have to open the Control Center, click on Desktop, Window Behavior, Actions and change the modifier key to something different than Alt.

See also

• Auto generated list of shortcuts

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