Importing Library
=================

Add the subdirectory `libsimpqt` to simpqt-0.0.1/src for our library
file. Add a `lib1.py` file to the libsimpqt directory.

.. Note:: all the files that `dpkg-buildpackage` creates have been
	removed for clarity.

::

	john@d10cave:~/gui-deb$ tree
	.
	└── simpqt
	    ├── debian
	    │   ├── changelog
	    │   ├── compat
	    │   ├── control
	    │   ├── copyright
	    │   ├── install
	    │   ├── manpages
	    │   ├── rules
	    │   └── source
	    │       └── format
	    ├── man
	    │   └── simpqt.1
	    ├── Simple PyQt5.desktop
	    └── src
	        ├── libsimpqt
	        │   └── lib1.py
	        ├── simpqt
	        └── simpqt.ui

	6 directories, 13 files

lib1.py
-------
::

	def testme():
		print('Function Import Test')
		return 0

simpqt
------

Modifications to the original `simpqt` file to import the library and
test the import by calling the function.
::

	#!/usr/bin/python3

	import sys, os
	from PyQt5.QtWidgets import QApplication, QMainWindow
	from PyQt5 import uic
	from libsimpqt import lib1

	if os.path.split(sys.argv[0])[0] == '/usr/bin':
		GUI_PATH = '/usr/lib/python3/dist-packages/libsimpqt'
		print('Installed')

	if os.path.split(sys.argv[0])[0] == '.':
		GUI_PATH = os.path.split(os.path.realpath(sys.argv[0]))[0]
		print('In Development')

	# test that the import worked
	print(f'lib1.testme() returned {lib1.testme()}')

	class main(QMainWindow):
		def __init__(self):
			super().__init__()
			path, filename = os.path.split(os.path.realpath(__file__))
			uic.loadUi(os.path.join(GUI_PATH, 'simpqt.ui'), self)
			self.setGeometry(50, 50, 500, 300)
			self.setWindowTitle("PyQT5 Minimal!")
			self.show()

	if __name__ == '__main__':
		app = QApplication(sys.argv)
		gui = main()
		sys.exit(app.exec_())


install
-------

Add the installation location for the library file in the format `file`
space `location`.
::

	src/simpqt usr/bin
	src/simpqt.ui usr/lib/python3/dist-packages/libsimpqt
	*.desktop usr/share/applications
	src/libsimpqt/*.* usr/lib/python3/dist-packages/libsimpqt

Open a terminal in the `simpqt/src` directory and test the program.
The `./` means look in this directory for the executable file in linux.

.. image:: images/import-01.png
    :align: center

As you can see the import of the library worked and it printed out to
the terminal as expected.

Build the deb
-------------

As before open a terminal in the `simpqt` directory and use
::

	dpkg-buildpackage -us -uc

In the `gui-deb` directory right click on the deb and open with Gdebi
and install.

Run from the Applications > Accessories menu or from a terminal with the
command `simpqt`.

.. image:: images/import-02.png
    :align: center