How to install Soft Keyboard

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How to install Soft Keyboard

This installation tutorial uses "2020-08-20-raspios-buster-armhf" version for testing.
If use earlier image, then the step6 and step7 maybe different, please refer to the virtual-keyboard official installation tutorial for specification.

Official reference address http://ozzmaker.com/virtual-keyboard-for-the-raspberry-pi/

1. Install the necessary files

sudo apt-get update
sudo apt-get install libfakekey-dev libpng-dev libxft-dev autoconf libtool

2.Install the matchbox-keyboard

git clone https://github.com/mwilliams03/matchbox-keyboard.git
cd matchbox-keyboard
./autogen.sh
(Note: "./ autogen.sh" execution takes a few minutes, and would show as follows after running correctly; if it doesn’t show as follows, then need to check to see if there are error Popup Window prompt)

Soft Keyboard-01.png

Continue:

sudo make
sudo make install

3. Install the shared data library for matchbox-keyboard

sudo apt-get install libmatchbox1

As following:

Soft Keyboard-02.png

4. Create a virtual keyboard startup script

sudo nano /usr/bin/toggle-matchbox-keyboard.sh

Paste the following, press Ctrl + X and Y, to save then exit

#!/bin/bash
#This script toggle the virtual keyboard
PID=`pidof matchbox-keyboard`
if [ ! -e $PID ]; then
killall matchbox-keyboard
else
matchbox-keyboard -s 50 extended&
fi

Add executable permission for the script above

sudo chmod +x /usr/bin/toggle-matchbox-keyboard.sh

5. Add script above to Start menu

sudo nano /usr/share/applications/toggle-matchbox-keyboard.desktop

Paste the following content, press Ctrl + X and Y, to save then exit

[Desktop Entry]
Name=Toggle Matchbox Keyboard
Comment=Toggle Matchbox Keyboard
Exec=toggle-matchbox-keyboard.sh
Type=Application
Icon=matchbox-keyboard.png
Categories=Panel;Utility;MB
X-MB-INPUT-MECHANSIM=True


6. Restart the system

sudo reboot


7. Add virtual keyboard to taskbar

Right click on the taskbar

虚拟键盘-1.png

虚拟键盘-2.png

虚拟键盘-3.png

虚拟键盘-4.png


P.S. Log into via SSH to see how to change the size of the virtual keyboard

DISPLAY=:0.0 matchbox-keyboard -s 50 extended
DISPLAY=:0.0 matchbox-keyboard -s 100 extended