keyboard-tester, for linux & macOS
Written so I could test macbook keyboards before sending back to clients after a board repair or similar service.
Works on keyboard scancodes, not keycodes, so will work with all keyboards but you'll be left with varying levels of keys that aren't "pressed".
BETA DEVELOPMENT --- Seems to be okay to use now
Prerequisites
Requires SDL2 and SDL2_ttf
linux
apt install libsdl2-dev
macOS
brew install libsdl2 libsd2_ttf
Build
make
Parameters
keyboard-tester [--dl <lower bound ms>] [--dh <upper bound ms>] [-m <mapfile>] [-c] [--dpi <dpi>] [--fs <pts>] [-d]
--dl <time (20 ms default)> : Set acceptable lower limit of key down time
--dh <time (200 ms default)> : Set acceptable upper limit of key down time
-m <mapfile> : Set keyboard map to use, limits keys and sets names to test
-c : Close tester when all keys have been pressed
--kwidth <px> : Width of key in pixels
--kheight <px> : Height of key in pixels
--kspacing <px> : Gap between keys in pixels
--columns <n> : How many columns of keys to show
--compact : Remove null/empty keys from grid display
--colbg <rrggbb> : background
--colkey <rrggbb> : key block
--coltext <rrggbb> : key text
--colpressed <rrggbb> : key block colour while pressed
--colreport <rrggbb> : after-pressed report text (normal)
--colflagged <rrggbb> : after-pressed report text (flagged)
--dpi <dpi> : Force screen DPI
--fs <pts> : Set font size in pts
--fscale : Scale the key text rather than cropping
-d : Enable debugging output
ALT/OPT-Q: exit/quit
ALT/OPT-M: Save current pressed keyset to mapfile
Application Controls
alt-q / opt-q : quit
alt-m / opt-m : Save currently pressed keys array to map file
Screenshots
Default mode
Compact mode
