I know how to change the setting : https://stackoverflow.com/a/11129039/390330
But I want a more live solution like I get with the mouse: Ctrl+Mouse Wheel shortcut. Except I need it to be a keyboard shortcut (e.g in browsers there is Ctrl + + / Ctrl + -). Is there such a keystroke / or can one be set
Nope. Currently only Ctrl+Mouse Wheel
Corresponding ticket: http://youtrack.jetbrains.com/issue/IDEA-84884
UPDATE: It has been implemented now (2 months later after writing this answer):
Settings / Preferences | Keymap
font
in that screen search boxIncrease
and Decrease
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