Tactile

Explains how touchscreens work through an interactive experience and simple animations.

Environment Setup

Below are instructions on how to prepare your environment to build and test the Tactile app.

Raspberry Pi

You can build Tactile on the Raspberry Pi using the Kano OS system. First, make sure you're pointing to the development archive and suite:

sudo kano-dev staging apt

Install the Build-Depends as listed in debian/control file:

sudo apt-get install -y build-essential kano-graphics-libs kano-qt-sdk-dev libqt5all-dev

Add Qt5 build tools to your PATH:

echo 'export PATH=$PATH:/usr/local/qt5/bin' >> $HOME/.bashrc
source $HOME/.bashrc

Mac OS

Install Qt 5.11 or higher using brew. I've not tested installing through other channels so your mileage my vary.

brew install qt5

Edit your ~/.bash_profile script and add the path to the Qt5 binaries, e.g.

export PATH=/usr/local/Cellar/qt5/5.11.1/bin:$PATH

You should be able to call qmake from a terminal shell. Next, comes the fun part - compiling all other dependencies. Clone the following repos and have the following structure:

containingFolder
   |-- tactile
   |-- kano-qt-sdk
   |-- kano-toolset

Compile libparson and symlink its header files:

cd ~/Kano/kano-toolset/libs/parson
sudo mkdir -p /usr/local/include/parson
sudo ln -s `pwd`/* /usr/local/include/parson
make
sudo ln -s `pwd`/release/libparson.dylib /usr/local/lib

Compile libkano_logging and symlink its header files:

cd ~/Kano/kano-qt-sdk
sudo mkdir -p /usr/local/include/kano/kano_logging
sudo ln -s `pwd`/lib/kano_logging/includes/* /usr/local/include/kano/kano_logging
qmake
make
sudo ln -s `pwd`/lib/build/* /usr/local/lib

Linux

NB This linux README is incomplete (installation issue not solved)

First update your system

sudo apt-get update

• Install QtCreator 5.11 or higher running these commands:

sudo apt install build-essential

sudo apt install qtcreator

If you want Qt 5 to be the default Qt version to be used when using development binaries like qmake, install the following package:

sudo apt install qt5-default
sudo apt install qt5-doc
sudo apt install qt5-doc-html qtbase5-doc-html
sudo apt install qtbase5-examples

You dont need to set the PATH, linux will do it for you!

If get the error: cannot find feature kano_i18n then clone the following repository and have the following structure:

containingFolder
   |-- tactile
   |-- kano-qt-sdk
   |-- kano-toolset

Commands:

mkdir containingFolder

mv tactile/ containingFolder/

Clone inside containingFolder the repo kano-qt-sdk and the repo kano-toolset

Compile libparson and symlink its header files:

cd ~/Kano/kano-toolset/libs/parson
sudo mkdir -p /usr/local/include/parson
sudo ln -s `pwd`/* /usr/local/include/parson
make

On mac we have libparson.dylib that in Linux is called libparson.so. You have to replace them:

sudo ln -s `pwd`/release/libparson.so /usr/local/lib

Compile libkano_logging and symlink its header files:

cd ~/Kano/kano-qt-sdk
sudo mkdir -p /usr/local/include/kano/kano_logging
sudo ln -s `pwd`/lib/kano_logging/includes/* /usr/local/include/kano/kano_logging
qmake
make
sudo ln -s `pwd`/lib/build/* /usr/local/lib

If you get an error on make command

Project ERROR: Unknown module(s) in QT: qml quick

You need to install qml and quick

sudo apt-get install qtdeclarative5-dev

NB You could find parson.h in => /usr/local/include/parson/lib

If you run in this error fatal error: parson/parson.h: No such file or directory is because user/local/include in not in the path

You could do momentarily a local fix

cd kano-qt-sdk

open => features/kano_build_options.prf

And modify the file

-macx {
-    LIBS += -L/usr/lib -L/usr/local/lib
-    INCLUDEPATH += /usr/include /usr/local/include
-}
+
+LIBS += -L/usr/lib -L/usr/local/lib
+INCLUDEPATH += /usr/include /usr/local/include
+

Eventually you should run:

run qmake

Alternative way for linux to pass files to the Kano-kit

Enter in kano-kit server and copy the path that you need

1. You can find the path with the command: dpkg-query -L <package name> => Example: dpkg-query -L tactile

NOTE: dpkg-query -L <package name> | grep <name of the file>

NB This method won't work for a new file, use the install.file instead

2. You can find the path using the install file in the debian folder NB You must complete manually the path

tactile
   |-- bin
   |-- build
   |-- debian
       |--tactile.install

Example res/ui is inside the kano-kit => /usr/share/tactile

Example path /usr/share/tactile/

Use this command to login inside the kano-kit's server

Syntax ssh user@ip => Example: ssh laura@172.16.254.180

NB You can find your kano-kit ip in the wifi's icon in the kano-kit itself

Now you can syncronize your local file with the kano kit file

NB You must exit the kano-kit server and use root as user run before to run this command

rsync -avi <path/where I am going copy from> root@172.16.254.180:/path/Where I going copy to/ => rsync -av ui root@172.16.254.180:/usr/share/tactile/

NOTE: -n it's gonna tell you the output without running the command for async

Faster approach

This command is just going to print the output

rsync -avinr res/ui/* root@172.16.254.180:/usr/share/tactile/ui/

See if it's ok then run the same command without the -n flag

rsync -avir res/ui/* root@172.16.254.180:/usr/share/tactile/ui/

If you see multiple file being update on your terminal:

<f+++++++++ Tactile/Wires/touch_a_grid.qml
<f+++++++++ Tactile/Wires/touch_a_wire.qml
<f+++++++++ Tactile/Wires/touch_indicator.qml
<f+++++++++ Tactile/Wires/touch_points.qml
<f+++++++++ Tactile/Wires/touchscreen.png
<f+++++++++ Tactile/Wires/wire.png

If you change the file you need to update the debian/changelog file

Example:

If current version tactile (4.2.0-0)

Changelog => tactile (4.3.0-0)

tactile (4.3.0-0) unstable; urgency=low

  * Change default text formatting to normal

 -- Team Kano <dev@kano.me>  Tue, 12 Mar 2019 15:35:00 +0000

tactile (4.2.0-0) unstable; urgency=low

  * Fixed minor spelling errors
 ...

If in the changelog file there are already changes with the next version you should just update it.

You may be doing something wrong!

Building

After setting up the environment on your platform of choice, you should be able to build the project in the same way as in the debian/rules file.

Raspberry Pi

Straightforwardly, compiling Tactile now is just:

qmake && make -j `nproc`

The binary will then be at:

bin/tactile

Mac OS

Similarly, compiling should just be:

qmake && make -j 4

The binary will be at:

bin/tactile.app/Contents/MacOS/tactile

Workflow Tips

A few tips specific to working with this project.

Debugging Messages

You'll want to build using a make debug variant rather than running the release version. Moreover, the debug messages will by default go to the syslog, so you'll need to disable:

DEFINES += QT_NO_DEBUG in tactile.pro

Logger::install_syslog(); in src/app.cpp

Make sure you don't forget to switch those back on when making a PR to master.

Adding New QML Scenes

Create a new folder for your module in res/ui/Tactile. Also, add the relevant scene specification to the res/ui/scenes.js file in order to use them further in res/ui/flow.js.