.gitignore

-.vs/
-.vscode/
-build*/
-bin*/
-logs/
-dist/
-CMakeLists.txt.user*
-*.autosave
-*.creator
-*.creator.user*
-\#*\#
-/.emacs.desktop
-/.emacs.desktop.lock
-*.elc
-auto-save-list
-tramp
-.\#*
-*~
-.fuse_hudden*
-.directory
-.Trash-*
-.nfs*
-Thumbs.db
-Thumbs.db:encryptable
-ehthumbs.db
-ehthumbs_vista.db
-$RECYCLE.BIN/
-*.stackdump
-[Dd]esktop.ini
-*.egg-info
-__pycache__/
-env/
+.vs/
+.vscode/
+build*/
+bin*/
+logs/
+dist/
+CMakeLists.txt.user*
+*.autosave
+*.creator
+*.creator.user*
+\#*\#
+/.emacs.desktop
+/.emacs.desktop.lock
+*.elc
+auto-save-list
+tramp
+.\#*
+*~
+.fuse_hudden*
+.directory
+.Trash-*
+.nfs*
+Thumbs.db
+Thumbs.db:encryptable
+ehthumbs.db
+ehthumbs_vista.db
+$RECYCLE.BIN/
+*.stackdump
+[Dd]esktop.ini
+*.egg-info
+__pycache__/
+env/
 venv/
\ No newline at end of file

README.md

@@ -8,16 +8,26 @@ How to build and debug the library during development.
 
 ### Prerequisites
 The following packages are required in order to build the library:
-* cmake 3.8+
+* C++:
+  * cmake 3.8+
   * gcc 7+/clang 7+/msvc 16+
   * fmtlib 5.2.1+
   * pybind11 2.3.0+
-* python 3.6+
+* Python:
+  * python 3.6+
   * setuptools
-  * wheel
   * pybind11
   * numpy
-  * pyside2/pyqt5
+  * pyside2
+
+To build a binary distribution, the following additional packages are required:
+* Python:
+  * wheel
+
+To run the test suite, the following additional packages are required:
+* Python:
+  * pytest
+  * pytest-cov (for testing with coverage)
 
 ### Using CMake directly
 How to build using CMake.

b_asic/GUI/__init__.py

+"""TODO"""
+from drag_button import *
+from improved_main_window import *
+from gui_interface import *

b_asic/GUI/arrow.py

+from PySide2.QtWidgets import QApplication, QWidget, QMainWindow, QLabel, QAction,\
+QStatusBar, QMenuBar, QLineEdit, QPushButton, QSlider, QScrollArea, QVBoxLayout,\
+QHBoxLayout, QDockWidget, QToolBar, QMenu, QLayout, QSizePolicy, QListWidget, QListWidgetItem,\
+QGraphicsLineItem, QGraphicsWidget
+from PySide2.QtCore import Qt, QSize, QLineF, QPoint, QRectF
+from PySide2.QtGui import QIcon, QFont, QPainter, QPen
+
+
+class Arrow(QGraphicsLineItem):
+
+    def __init__(self, source, destination, window, parent=None):
+        super(Arrow, self).__init__(parent)
+        self.source = source
+        self.destination = destination
+        self._window = window
+        self.moveLine()
+        self.source.moved.connect(self.moveLine)
+        self.destination.moved.connect(self.moveLine)
+
+    def contextMenuEvent(self, event):
+        menu = QMenu()
+        menu.addAction("Delete", self.remove)
+        menu.exec_(self.cursor().pos())
+
+    def remove(self):
+        self._window.scene.removeItem(self)
+        self._window.signalList.remove(self)
+
+    def moveLine(self):
+        self.setPen(QPen(Qt.black, 3))
+        self.setLine(QLineF(self.source.operation.x()+self.source.x()+14,\
+             self.source.operation.y()+self.source.y()+7.5,\
+             self.destination.operation.x()+self.destination.x(),\
+             self.destination.operation.y()+self.destination.y()+7.5))

b_asic/GUI/drag_button.py

+"""@package docstring
+Drag button class.
+This class creates a dragbutton which can be clicked, dragged and dropped.
+"""
+
+import os.path
+
+from properties_window import PropertiesWindow
+
+from PySide2.QtWidgets import QPushButton, QMenu, QAction
+from PySide2.QtCore import Qt, QSize, Signal
+from PySide2.QtGui import QIcon
+
+from utils import decorate_class, handle_error
+
+
+@decorate_class(handle_error)
+class DragButton(QPushButton):
+    connectionRequested = Signal(QPushButton)
+    moved = Signal()
+    def __init__(self, name, operation, operation_path_name, is_show_name, window, parent = None):
+        self.name = name
+        self.is_show_name = is_show_name
+        self._window = window
+        self.operation = operation
+        self.operation_path_name = operation_path_name
+        self.clicked = 0
+        self.pressed = False
+        self._mouse_press_pos = None
+        self._mouse_move_pos = None
+        super(DragButton, self).__init__(self._window)
+
+    def contextMenuEvent(self, event):
+        menu = QMenu()
+        properties = QAction("Properties")
+        menu.addAction(properties)
+        properties.triggered.connect(self.show_properties_window)
+        menu.exec_(self.cursor().pos())
+
+    def show_properties_window(self, event):
+        self.properties_window = PropertiesWindow(self, self._window)
+        self.properties_window.show()
+
+    def add_label(self, label):
+        self.label = label
+
+    def mousePressEvent(self, event):
+
+        if event.button() == Qt.LeftButton:
+            self._mouse_press_pos = event.pos()
+            self._mouse_move_pos = event.pos()
+
+            for signal in self._window.signalList:
+                signal.update()
+
+            self.clicked += 1
+            if self.clicked == 1:
+                self.pressed = True
+                self.setStyleSheet("background-color: grey; border-style: solid;\
+                border-color: black; border-width: 2px")
+                path_to_image = os.path.join('operation_icons', self.operation_path_name + '_grey.png')
+                self.setIcon(QIcon(path_to_image))
+                self.setIconSize(QSize(55, 55))
+                self._window.pressed_button.append(self)
+
+            elif self.clicked == 2:
+                self.clicked = 0
+                self.pressed = False
+                self.setStyleSheet("background-color: white; border-style: solid;\
+                border-color: black; border-width: 2px")
+                path_to_image = os.path.join('operation_icons', self.operation_path_name + '.png')
+                self.setIcon(QIcon(path_to_image))
+                self.setIconSize(QSize(55, 55))
+                self._window.pressed_button.remove(self)
+
+        super(DragButton, self).mousePressEvent(event)
+
+    def mouseMoveEvent(self, event):
+        if event.buttons() == Qt.LeftButton:
+            self.move(self.mapToParent(event.pos() - self._mouse_press_pos))
+
+        self._window.update()
+        super(DragButton, self).mouseMoveEvent(event)
+
+    def mouseReleaseEvent(self, event):
+        if self._mouse_press_pos is not None:
+            moved = event.pos() - self._mouse_press_pos
+            if moved.manhattanLength() > 3:
+                event.ignore()
+                return
+
+        super(DragButton, self).mouseReleaseEvent(event)
+
+    def remove(self):
+        self.deleteLater()
\ No newline at end of file

b_asic/GUI/gui_interface.py

+# -*- coding: utf-8 -*-
+
+# Form implementation generated from reading ui file 'gui_interface.ui'
+#
+# Created by: PyQt5 UI code generator 5.14.2
+#
+# WARNING! All changes made in this file will be lost!
+
+
+from PySide2 import QtCore, QtGui, QtWidgets
+
+
+class Ui_main_window(object):
+    def setupUi(self, main_window):
+        main_window.setObjectName("main_window")
+        main_window.setEnabled(True)
+        main_window.resize(897, 633)
+        self.centralwidget = QtWidgets.QWidget(main_window)
+        self.centralwidget.setObjectName("centralwidget")
+        self.operation_box = QtWidgets.QGroupBox(self.centralwidget)
+        self.operation_box.setGeometry(QtCore.QRect(10, 10, 201, 531))
+        self.operation_box.setLayoutDirection(QtCore.Qt.LeftToRight)
+        self.operation_box.setAutoFillBackground(False)
+        self.operation_box.setStyleSheet("QGroupBox { \n"
+"     border: 2px solid gray; \n"
+"     border-radius: 3px;\n"
+"     margin-top: 0.5em; \n"
+" } \n"
+"\n"
+"QGroupBox::title {\n"
+"    subcontrol-origin: margin;\n"
+"    left: 10px;\n"
+"    padding: 0 3px 0 3px;\n"
+"}")
+        self.operation_box.setAlignment(QtCore.Qt.AlignLeading|QtCore.Qt.AlignLeft|QtCore.Qt.AlignVCenter)
+        self.operation_box.setFlat(False)
+        self.operation_box.setCheckable(False)
+        self.operation_box.setObjectName("operation_box")
+        self.operation_list = QtWidgets.QToolBox(self.operation_box)
+        self.operation_list.setGeometry(QtCore.QRect(10, 20, 171, 271))
+        self.operation_list.setAutoFillBackground(False)
+        self.operation_list.setObjectName("operation_list")
+        self.core_operations_page = QtWidgets.QWidget()
+        self.core_operations_page.setGeometry(QtCore.QRect(0, 0, 171, 217))
+        self.core_operations_page.setObjectName("core_operations_page")
+        self.core_operations_list = QtWidgets.QListWidget(self.core_operations_page)
+        self.core_operations_list.setGeometry(QtCore.QRect(10, 0, 141, 211))
+        self.core_operations_list.setMinimumSize(QtCore.QSize(141, 0))
+        self.core_operations_list.setEditTriggers(QtWidgets.QAbstractItemView.DoubleClicked|QtWidgets.QAbstractItemView.EditKeyPressed)
+        self.core_operations_list.setDragEnabled(False)
+        self.core_operations_list.setDragDropMode(QtWidgets.QAbstractItemView.NoDragDrop)
+        self.core_operations_list.setMovement(QtWidgets.QListView.Static)
+        self.core_operations_list.setFlow(QtWidgets.QListView.TopToBottom)
+        self.core_operations_list.setProperty("isWrapping", False)
+        self.core_operations_list.setResizeMode(QtWidgets.QListView.Adjust)
+        self.core_operations_list.setLayoutMode(QtWidgets.QListView.SinglePass)
+        self.core_operations_list.setViewMode(QtWidgets.QListView.ListMode)
+        self.core_operations_list.setUniformItemSizes(False)
+        self.core_operations_list.setWordWrap(False)
+        self.core_operations_list.setSelectionRectVisible(False)
+        self.core_operations_list.setObjectName("core_operations_list")
+        self.operation_list.addItem(self.core_operations_page, "")
+        self.special_operations_page = QtWidgets.QWidget()
+        self.special_operations_page.setGeometry(QtCore.QRect(0, 0, 171, 217))
+        self.special_operations_page.setObjectName("special_operations_page")
+        self.special_operations_list = QtWidgets.QListWidget(self.special_operations_page)
+        self.special_operations_list.setGeometry(QtCore.QRect(10, 0, 141, 81))
+        self.special_operations_list.setObjectName("special_operations_list")
+        self.operation_list.addItem(self.special_operations_page, "")
+        main_window.setCentralWidget(self.centralwidget)
+        self.menu_bar = QtWidgets.QMenuBar(main_window)
+        self.menu_bar.setGeometry(QtCore.QRect(0, 0, 897, 21))
+        palette = QtGui.QPalette()
+        brush = QtGui.QBrush(QtGui.QColor(0, 0, 0))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.WindowText, brush)
+        brush = QtGui.QBrush(QtGui.QColor(0, 255, 0))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Button, brush)
+        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Light, brush)
+        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Midlight, brush)
+        brush = QtGui.QBrush(QtGui.QColor(127, 127, 127))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Dark, brush)
+        brush = QtGui.QBrush(QtGui.QColor(170, 170, 170))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Mid, brush)
+        brush = QtGui.QBrush(QtGui.QColor(0, 0, 0))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Text, brush)
+        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.BrightText, brush)
+        brush = QtGui.QBrush(QtGui.QColor(0, 0, 0))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.ButtonText, brush)
+        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Base, brush)
+        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Window, brush)
+        brush = QtGui.QBrush(QtGui.QColor(0, 0, 0))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Shadow, brush)
+        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.AlternateBase, brush)
+        brush = QtGui.QBrush(QtGui.QColor(255, 255, 220))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.ToolTipBase, brush)
+        brush = QtGui.QBrush(QtGui.QColor(0, 0, 0))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.ToolTipText, brush)
+        brush = QtGui.QBrush(QtGui.QColor(0, 0, 0, 128))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.PlaceholderText, brush)
+        brush = QtGui.QBrush(QtGui.QColor(0, 0, 0))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.WindowText, brush)
+        brush = QtGui.QBrush(QtGui.QColor(0, 255, 0))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Button, brush)
+        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Light, brush)
+        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Midlight, brush)
+        brush = QtGui.QBrush(QtGui.QColor(127, 127, 127))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Dark, brush)
+        brush = QtGui.QBrush(QtGui.QColor(170, 170, 170))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Mid, brush)
+        brush = QtGui.QBrush(QtGui.QColor(0, 0, 0))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Text, brush)
+        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.BrightText, brush)
+        brush = QtGui.QBrush(QtGui.QColor(0, 0, 0))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.ButtonText, brush)
+        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Base, brush)
+        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Window, brush)
+        brush = QtGui.QBrush(QtGui.QColor(0, 0, 0))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Shadow, brush)
+        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.AlternateBase, brush)
+        brush = QtGui.QBrush(QtGui.QColor(255, 255, 220))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.ToolTipBase, brush)
+        brush = QtGui.QBrush(QtGui.QColor(0, 0, 0))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.ToolTipText, brush)
+        brush = QtGui.QBrush(QtGui.QColor(0, 0, 0, 128))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.PlaceholderText, brush)
+        brush = QtGui.QBrush(QtGui.QColor(127, 127, 127))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.WindowText, brush)
+        brush = QtGui.QBrush(QtGui.QColor(0, 255, 0))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Button, brush)
+        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Light, brush)
+        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Midlight, brush)
+        brush = QtGui.QBrush(QtGui.QColor(127, 127, 127))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Dark, brush)
+        brush = QtGui.QBrush(QtGui.QColor(170, 170, 170))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Mid, brush)
+        brush = QtGui.QBrush(QtGui.QColor(127, 127, 127))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Text, brush)
+        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.BrightText, brush)
+        brush = QtGui.QBrush(QtGui.QColor(127, 127, 127))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.ButtonText, brush)
+        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Base, brush)
+        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Window, brush)
+        brush = QtGui.QBrush(QtGui.QColor(0, 0, 0))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Shadow, brush)
+        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.AlternateBase, brush)
+        brush = QtGui.QBrush(QtGui.QColor(255, 255, 220))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.ToolTipBase, brush)
+        brush = QtGui.QBrush(QtGui.QColor(0, 0, 0))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.ToolTipText, brush)
+        brush = QtGui.QBrush(QtGui.QColor(0, 0, 0, 128))
+        brush.setStyle(QtCore.Qt.SolidPattern)
+        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.PlaceholderText, brush)
+        self.menu_bar.setPalette(palette)
+        self.menu_bar.setObjectName("menu_bar")
+        self.file_menu = QtWidgets.QMenu(self.menu_bar)
+        self.file_menu.setObjectName("file_menu")
+        self.edit_menu = QtWidgets.QMenu(self.menu_bar)
+        self.edit_menu.setObjectName("edit_menu")
+        self.view_menu = QtWidgets.QMenu(self.menu_bar)
+        self.view_menu.setObjectName("view_menu")
+        main_window.setMenuBar(self.menu_bar)
+        self.status_bar = QtWidgets.QStatusBar(main_window)
+        self.status_bar.setObjectName("status_bar")
+        main_window.setStatusBar(self.status_bar)
+        self.save_menu = QtWidgets.QAction(main_window)
+        self.save_menu.setObjectName("save_menu")
+        self.exit_menu = QtWidgets.QAction(main_window)
+        self.exit_menu.setObjectName("exit_menu")
+        self.actionUndo = QtWidgets.QAction(main_window)
+        self.actionUndo.setObjectName("actionUndo")
+        self.actionRedo = QtWidgets.QAction(main_window)
+        self.actionRedo.setObjectName("actionRedo")
+        self.actionToolbar = QtWidgets.QAction(main_window)
+        self.actionToolbar.setCheckable(True)
+        self.actionToolbar.setObjectName("actionToolbar")
+        self.file_menu.addAction(self.save_menu)
+        self.file_menu.addSeparator()
+        self.file_menu.addAction(self.exit_menu)
+        self.edit_menu.addAction(self.actionUndo)
+        self.edit_menu.addAction(self.actionRedo)
+        self.view_menu.addAction(self.actionToolbar)
+        self.menu_bar.addAction(self.file_menu.menuAction())
+        self.menu_bar.addAction(self.edit_menu.menuAction())
+        self.menu_bar.addAction(self.view_menu.menuAction())
+
+        self.retranslateUi(main_window)
+        self.operation_list.setCurrentIndex(1)
+        self.core_operations_list.setCurrentRow(-1)
+        QtCore.QMetaObject.connectSlotsByName(main_window)
+
+    def retranslateUi(self, main_window):
+        _translate = QtCore.QCoreApplication.translate
+        main_window.setWindowTitle(_translate("main_window", "MainWindow"))
+        self.operation_box.setTitle(_translate("main_window", "Operations"))
+        self.core_operations_list.setSortingEnabled(False)
+        __sortingEnabled = self.core_operations_list.isSortingEnabled()
+        self.core_operations_list.setSortingEnabled(False)
+        self.core_operations_list.setSortingEnabled(__sortingEnabled)
+        self.operation_list.setItemText(self.operation_list.indexOf(self.core_operations_page), _translate("main_window", "Core operations"))
+        __sortingEnabled = self.special_operations_list.isSortingEnabled()
+        self.special_operations_list.setSortingEnabled(False)
+        self.special_operations_list.setSortingEnabled(__sortingEnabled)
+        self.operation_list.setItemText(self.operation_list.indexOf(self.special_operations_page), _translate("main_window", "Special operations"))
+        self.file_menu.setTitle(_translate("main_window", "File"))
+        self.edit_menu.setTitle(_translate("main_window", "Edit"))
+        self.view_menu.setTitle(_translate("main_window", "View"))
+        self.save_menu.setText(_translate("main_window", "Save"))
+        self.exit_menu.setText(_translate("main_window", "Exit"))
+        self.exit_menu.setShortcut(_translate("main_window", "Ctrl+Q"))
+        self.actionUndo.setText(_translate("main_window", "Undo"))
+        self.actionRedo.setText(_translate("main_window", "Redo"))
+        self.actionToolbar.setText(_translate("main_window", "Toolbar"))
+
+
+if __name__ == "__main__":
+    import sys
+    app = QtWidgets.QApplication(sys.argv)
+    main_window = QtWidgets.QMainWindow()
+    ui = Ui_main_window()
+    ui.setupUi(main_window)
+    main_window.show()
+    sys.exit(app.exec_())

b_asic/GUI/gui_interface.ui

+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>main_window</class>
+ <widget class="QMainWindow" name="main_window">
+  <property name="enabled">
+   <bool>true</bool>
+  </property>
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>897</width>
+    <height>633</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>MainWindow</string>
+  </property>
+  <widget class="QWidget" name="centralwidget">
+   <widget class="QGroupBox" name="operation_box">
+    <property name="geometry">
+     <rect>
+      <x>10</x>
+      <y>10</y>
+      <width>201</width>
+      <height>531</height>
+     </rect>
+    </property>
+    <property name="layoutDirection">
+     <enum>Qt::LeftToRight</enum>
+    </property>
+    <property name="autoFillBackground">
+     <bool>false</bool>
+    </property>
+    <property name="styleSheet">
+     <string notr="true">QGroupBox { 
+     border: 2px solid gray; 
+     border-radius: 3px;
+	 margin-top: 0.5em; 
+ } 
+
+QGroupBox::title {
+    subcontrol-origin: margin;
+    left: 10px;
+    padding: 0 3px 0 3px;
+}</string>
+    </property>
+    <property name="title">
+     <string>Operations</string>
+    </property>
+    <property name="alignment">
+     <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
+    </property>
+    <property name="flat">
+     <bool>false</bool>
+    </property>
+    <property name="checkable">
+     <bool>false</bool>
+    </property>
+    <widget class="QToolBox" name="operation_list">
+     <property name="geometry">
+      <rect>
+       <x>10</x>
+       <y>20</y>
+       <width>171</width>
+       <height>271</height>
+      </rect>
+     </property>
+     <property name="autoFillBackground">
+      <bool>false</bool>
+     </property>
+     <property name="currentIndex">
+      <number>1</number>
+     </property>
+     <widget class="QWidget" name="core_operations_page">
+      <property name="geometry">
+       <rect>
+        <x>0</x>
+        <y>0</y>
+        <width>171</width>
+        <height>217</height>
+       </rect>
+      </property>
+      <attribute name="label">
+       <string>Core operations</string>
+      </attribute>
+      <widget class="QListWidget" name="core_operations_list">
+       <property name="geometry">
+        <rect>
+         <x>10</x>
+         <y>0</y>
+         <width>141</width>
+         <height>211</height>
+        </rect>
+       </property>
+       <property name="minimumSize">
+        <size>
+         <width>141</width>
+         <height>0</height>
+        </size>
+       </property>
+       <property name="editTriggers">
+        <set>QAbstractItemView::DoubleClicked|QAbstractItemView::EditKeyPressed</set>
+       </property>
+       <property name="dragEnabled">
+        <bool>false</bool>
+       </property>
+       <property name="dragDropMode">
+        <enum>QAbstractItemView::NoDragDrop</enum>
+       </property>
+       <property name="movement">
+        <enum>QListView::Static</enum>
+       </property>
+       <property name="flow">
+        <enum>QListView::TopToBottom</enum>
+       </property>
+       <property name="isWrapping" stdset="0">
+        <bool>false</bool>
+       </property>
+       <property name="resizeMode">
+        <enum>QListView::Adjust</enum>
+       </property>
+       <property name="layoutMode">
+        <enum>QListView::SinglePass</enum>
+       </property>
+       <property name="viewMode">
+        <enum>QListView::ListMode</enum>
+       </property>
+       <property name="uniformItemSizes">
+        <bool>false</bool>
+       </property>
+       <property name="wordWrap">
+        <bool>false</bool>
+       </property>
+       <property name="selectionRectVisible">
+        <bool>false</bool>
+       </property>
+       <property name="currentRow">
+        <number>-1</number>
+       </property>
+       <property name="sortingEnabled">
+        <bool>false</bool>
+       </property>
+       <item>
+        <property name="text">
+         <string>Addition</string>
+        </property>
+       </item>
+       <item>
+        <property name="text">
+         <string>Subtraction</string>
+        </property>
+       </item>
+       <item>
+        <property name="text">
+         <string>Multiplication</string>
+        </property>
+       </item>
+       <item>
+        <property name="text">
+         <string>Division</string>
+        </property>
+       </item>
+       <item>
+        <property name="text">
+         <string>Constant</string>
+        </property>
+       </item>
+       <item>
+        <property name="text">
+         <string>Constant multiplication</string>
+        </property>
+       </item>
+       <item>
+        <property name="text">
+         <string>Square root</string>
+        </property>
+       </item>
+       <item>
+        <property name="text">
+         <string>Complex conjugate</string>
+        </property>
+       </item>
+       <item>
+        <property name="text">
+         <string>Absolute</string>
+        </property>
+       </item>
+       <item>
+        <property name="text">
+         <string>Max</string>
+        </property>
+       </item>
+       <item>
+        <property name="text">
+         <string>Min</string>
+        </property>
+       </item>
+       <item>
+        <property name="text">
+         <string>Butterfly</string>
+        </property>
+       </item>
+      </widget>
+     </widget>
+     <widget class="QWidget" name="special_operations_page">
+      <property name="geometry">
+       <rect>
+        <x>0</x>
+        <y>0</y>
+        <width>171</width>
+        <height>217</height>
+       </rect>
+      </property>
+      <attribute name="label">
+       <string>Special operations</string>
+      </attribute>
+      <widget class="QListWidget" name="special_operations_list">
+       <property name="geometry">
+        <rect>
+         <x>10</x>
+         <y>0</y>
+         <width>141</width>
+         <height>81</height>
+        </rect>
+       </property>
+       <item>
+        <property name="text">
+         <string>Input</string>
+        </property>
+       </item>
+       <item>
+        <property name="text">
+         <string>Output</string>
+        </property>
+       </item>
+       <item>
+        <property name="text">
+         <string>Register</string>
+        </property>
+       </item>
+       <item>
+        <property name="text">
+         <string>Custom</string>
+        </property>
+       </item>
+      </widget>
+     </widget>
+    </widget>
+   </widget>
+  </widget>
+  <widget class="QMenuBar" name="menu_bar">
+   <property name="geometry">
+    <rect>
+     <x>0</x>
+     <y>0</y>
+     <width>897</width>
+     <height>21</height>
+    </rect>
+   </property>
+   <property name="palette">
+    <palette>
+     <active>
+      <colorrole role="WindowText">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>0</red>
+         <green>0</green>
+         <blue>0</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Button">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>0</red>
+         <green>255</green>
+         <blue>0</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Light">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>255</red>
+         <green>255</green>
+         <blue>255</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Midlight">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>255</red>
+         <green>255</green>
+         <blue>255</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Dark">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>127</red>
+         <green>127</green>
+         <blue>127</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Mid">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>170</red>
+         <green>170</green>
+         <blue>170</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Text">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>0</red>
+         <green>0</green>
+         <blue>0</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="BrightText">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>255</red>
+         <green>255</green>
+         <blue>255</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="ButtonText">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>0</red>
+         <green>0</green>
+         <blue>0</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Base">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>255</red>
+         <green>255</green>
+         <blue>255</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Window">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>255</red>
+         <green>255</green>
+         <blue>255</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Shadow">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>0</red>
+         <green>0</green>
+         <blue>0</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="AlternateBase">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>255</red>
+         <green>255</green>
+         <blue>255</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="ToolTipBase">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>255</red>
+         <green>255</green>
+         <blue>220</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="ToolTipText">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>0</red>
+         <green>0</green>
+         <blue>0</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="PlaceholderText">
+       <brush brushstyle="SolidPattern">
+        <color alpha="128">
+         <red>0</red>
+         <green>0</green>
+         <blue>0</blue>
+        </color>
+       </brush>
+      </colorrole>
+     </active>
+     <inactive>
+      <colorrole role="WindowText">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>0</red>
+         <green>0</green>
+         <blue>0</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Button">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>0</red>
+         <green>255</green>
+         <blue>0</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Light">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>255</red>
+         <green>255</green>
+         <blue>255</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Midlight">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>255</red>
+         <green>255</green>
+         <blue>255</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Dark">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>127</red>
+         <green>127</green>
+         <blue>127</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Mid">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>170</red>
+         <green>170</green>
+         <blue>170</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Text">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>0</red>
+         <green>0</green>
+         <blue>0</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="BrightText">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>255</red>
+         <green>255</green>
+         <blue>255</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="ButtonText">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>0</red>
+         <green>0</green>
+         <blue>0</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Base">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>255</red>
+         <green>255</green>
+         <blue>255</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Window">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>255</red>
+         <green>255</green>
+         <blue>255</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Shadow">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>0</red>
+         <green>0</green>
+         <blue>0</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="AlternateBase">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>255</red>
+         <green>255</green>
+         <blue>255</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="ToolTipBase">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>255</red>
+         <green>255</green>
+         <blue>220</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="ToolTipText">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>0</red>
+         <green>0</green>
+         <blue>0</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="PlaceholderText">
+       <brush brushstyle="SolidPattern">
+        <color alpha="128">
+         <red>0</red>
+         <green>0</green>
+         <blue>0</blue>
+        </color>
+       </brush>
+      </colorrole>
+     </inactive>
+     <disabled>
+      <colorrole role="WindowText">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>127</red>
+         <green>127</green>
+         <blue>127</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Button">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>0</red>
+         <green>255</green>
+         <blue>0</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Light">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>255</red>
+         <green>255</green>
+         <blue>255</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Midlight">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>255</red>
+         <green>255</green>
+         <blue>255</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Dark">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>127</red>
+         <green>127</green>
+         <blue>127</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Mid">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>170</red>
+         <green>170</green>
+         <blue>170</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Text">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>127</red>
+         <green>127</green>
+         <blue>127</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="BrightText">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>255</red>
+         <green>255</green>
+         <blue>255</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="ButtonText">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>127</red>
+         <green>127</green>
+         <blue>127</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Base">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>255</red>
+         <green>255</green>
+         <blue>255</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Window">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>255</red>
+         <green>255</green>
+         <blue>255</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="Shadow">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>0</red>
+         <green>0</green>
+         <blue>0</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="AlternateBase">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>255</red>
+         <green>255</green>
+         <blue>255</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="ToolTipBase">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>255</red>
+         <green>255</green>
+         <blue>220</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="ToolTipText">
+       <brush brushstyle="SolidPattern">
+        <color alpha="255">
+         <red>0</red>
+         <green>0</green>
+         <blue>0</blue>
+        </color>
+       </brush>
+      </colorrole>
+      <colorrole role="PlaceholderText">
+       <brush brushstyle="SolidPattern">
+        <color alpha="128">
+         <red>0</red>
+         <green>0</green>
+         <blue>0</blue>
+        </color>
+       </brush>
+      </colorrole>
+     </disabled>
+    </palette>
+   </property>
+   <widget class="QMenu" name="file_menu">
+    <property name="title">
+     <string>File</string>
+    </property>
+    <addaction name="save_menu"/>
+    <addaction name="separator"/>
+    <addaction name="exit_menu"/>
+   </widget>
+   <widget class="QMenu" name="edit_menu">
+    <property name="title">
+     <string>Edit</string>
+    </property>
+    <addaction name="actionUndo"/>
+    <addaction name="actionRedo"/>
+   </widget>
+   <widget class="QMenu" name="view_menu">
+    <property name="title">
+     <string>View</string>
+    </property>
+    <addaction name="actionToolbar"/>
+   </widget>
+   <addaction name="file_menu"/>
+   <addaction name="edit_menu"/>
+   <addaction name="view_menu"/>
+  </widget>
+  <widget class="QStatusBar" name="status_bar"/>
+  <action name="save_menu">
+   <property name="text">
+    <string>Save</string>
+   </property>
+  </action>
+  <action name="exit_menu">
+   <property name="text">
+    <string>Exit</string>
+   </property>
+   <property name="shortcut">
+    <string>Ctrl+Q</string>
+   </property>
+  </action>
+  <action name="actionUndo">
+   <property name="text">
+    <string>Undo</string>
+   </property>
+  </action>
+  <action name="actionRedo">
+   <property name="text">
+    <string>Redo</string>
+   </property>
+  </action>
+  <action name="actionToolbar">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="text">
+    <string>Toolbar</string>
+   </property>
+  </action>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

b_asic/GUI/main_window.py

+"""@package docstring
+B-ASIC GUI Module.
+This python file is the main window of the GUI for B-ASIC.
+"""
+
+from os import getcwd, path
+import sys
+
+from drag_button import DragButton
+from gui_interface import Ui_main_window
+from arrow import Arrow
+from port_button import PortButton
+
+from b_asic import Operation
+import b_asic.core_operations as c_oper
+import b_asic.special_operations as s_oper
+from utils import decorate_class, handle_error
+
+from numpy import linspace
+
+from PySide2.QtWidgets import QApplication, QWidget, QMainWindow, QLabel, QAction,\
+QStatusBar, QMenuBar, QLineEdit, QPushButton, QSlider, QScrollArea, QVBoxLayout,\
+QHBoxLayout, QDockWidget, QToolBar, QMenu, QLayout, QSizePolicy, QListWidget,\
+QListWidgetItem, QGraphicsView, QGraphicsScene, QShortcut, QGraphicsTextItem,\
+QGraphicsProxyWidget
+from PySide2.QtCore import Qt, QSize
+from PySide2.QtGui import QIcon, QFont, QPainter, QPen, QBrush, QKeySequence
+
+
+MIN_WIDTH_SCENE = 600
+MIN_HEIGHT_SCENE = 520
+
+@decorate_class(handle_error)
+class MainWindow(QMainWindow):
+    def __init__(self):
+        super(MainWindow, self).__init__()
+        self.ui = Ui_main_window()
+        self.ui.setupUi(self)
+        self.setWindowTitle(" ")
+        self.setWindowIcon(QIcon('small_logo.png'))
+        self.scene = None
+        self._operations_from_name = dict()
+        self.zoom = 1
+        self.operationList = []
+        self.signalList = []
+        self.pressed_button = []
+        self.portList = []
+        self.pressed_ports = []
+        self.source = None
+        self._window = self
+
+        self.init_ui()
+        self.add_operations_from_namespace(c_oper, self.ui.core_operations_list)
+        self.add_operations_from_namespace(s_oper, self.ui.special_operations_list)
+
+        self.shortcut_core = QShortcut(QKeySequence("Ctrl+R"), self.ui.operation_box)
+        self.shortcut_core.activated.connect(self._refresh_operations_list_from_namespace)
+
+        self.move_button_index = 0
+        self.is_show_names = True
+
+        self.check_show_names = QAction("Show operation names")
+        self.check_show_names.triggered.connect(self.view_operation_names)
+        self.check_show_names.setCheckable(True)
+        self.check_show_names.setChecked(1)
+        self.ui.view_menu.addAction(self.check_show_names)
+
+    def init_ui(self):
+        self.ui.core_operations_list.itemClicked.connect(self.on_list_widget_item_clicked)
+        self.ui.special_operations_list.itemClicked.connect(self.on_list_widget_item_clicked)
+        self.ui.exit_menu.triggered.connect(self.exit_app)
+        self.create_graphics_view()
+
+    def create_graphics_view(self):
+        self.scene = QGraphicsScene(self)
+        self.graphic_view = QGraphicsView(self.scene, self)
+        self.graphic_view.setRenderHint(QPainter.Antialiasing)
+        self.graphic_view.setGeometry(self.ui.operation_box.width(), 0, self.width(), self.height())
+        self.graphic_view.setDragMode(QGraphicsView.ScrollHandDrag)
+
+    def resizeEvent(self, event):
+        self.ui.operation_box.setGeometry(10, 10, self.ui.operation_box.width(), self.height())
+        self.graphic_view.setGeometry(self.ui.operation_box.width() + 20, 0, self.width() - self.ui.operation_box.width() - 20, self.height())
+        super(MainWindow, self).resizeEvent(event)
+
+    def wheelEvent(self, event):
+        if event.modifiers() == Qt.ControlModifier:
+            old_zoom = self.zoom
+            self.zoom += event.angleDelta().y()/2500
+            self.graphic_view.scale(self.zoom, self.zoom)
+            self.zoom = old_zoom
+
+    def view_operation_names(self, event):
+        if self.check_show_names.isChecked():
+            self.is_show_names = True
+        else:
+            self.is_show_names = False
+        for operation in self.operationList:
+            operation.label.setOpacity(self.is_show_names)
+            operation.is_show_name = self.is_show_names
+
+    def exit_app(self, checked):
+        QApplication.quit()
+
+    def _determine_port_distance(self, length, ports):
+        """Determine the distance between each port on the side of an operation.
+        The method returns the distance that each port should have from 0.
+        """
+        return [length / 2] if ports == 1 else linspace(0, length, ports)
+
+    def _create_port(self, operation, output_port=True):
+        text = ">" if output_port else "<"
+        button = PortButton(text, operation, self)
+        button.setStyleSheet("background-color: white")
+        button.connectionRequested.connect(self.connectButton)
+        return button
+
+    def add_ports(self, operation):
+        _output_ports_dist = self._determine_port_distance(55 - 17, operation.operation.output_count)
+        _input_ports_dist = self._determine_port_distance(55 - 17, operation.operation.input_count)
+
+        for dist in _input_ports_dist:
+            port = self._create_port(operation)
+            port.move(0, dist)
+            port.show()
+
+        for dist in _output_ports_dist:
+            port = self._create_port(operation)
+            port.move(55 - 12, dist)
+            port.show()
+
+    def get_operations_from_namespace(self, namespace):
+        return [comp for comp in dir(namespace) if hasattr(getattr(namespace, comp), "type_name")]
+
+    def add_operations_from_namespace(self, namespace, _list):
+        for attr_name in self.get_operations_from_namespace(namespace):
+            attr = getattr(namespace, attr_name)
+            try:
+                attr.type_name()
+                item = QListWidgetItem(attr_name)
+                _list.addItem(item)
+                self._operations_from_name[attr_name] = attr
+            except NotImplementedError:
+                pass
+
+    def _create_operation(self, item):
+        try:
+            attr_oper = self._operations_from_name[item.text()]()
+            attr_button = DragButton(attr_oper.graph_id, attr_oper, attr_oper.type_name().lower(), True, self)
+            attr_button.move(250, 100)
+            attr_button.setFixedSize(55, 55)
+            attr_button.setStyleSheet("background-color: white; border-style: solid;\
+            border-color: black; border-width: 2px")
+            self.add_ports(attr_button)
+
+            icon_path = path.join("operation_icons", f"{attr_oper.type_name().lower()}.png")
+            if not path.exists(icon_path):
+                icon_path = path.join("operation_icons", f"custom_operation.png")
+            attr_button.setIcon(QIcon(icon_path))
+            attr_button.setIconSize(QSize(55, 55))
+            attr_button.setParent(None)
+            attr_button_scene = self.scene.addWidget(attr_button)
+            attr_button_scene.moveBy(self.move_button_index * 100, 0)
+            self.move_button_index += 1
+            operation_label = QGraphicsTextItem(attr_oper.type_name(), attr_button_scene)
+            if not self.is_show_names:
+                operation_label.setOpacity(0)
+            operation_label.setTransformOriginPoint(operation_label.boundingRect().center())
+            operation_label.moveBy(10, -20)
+            attr_button.add_label(operation_label)
+            self.operationList.append(attr_button)
+        except Exception as e:
+            print("Unexpected error occured: ", e)
+
+    def _refresh_operations_list_from_namespace(self):
+        self.ui.core_operations_list.clear()
+        self.ui.special_operations_list.clear()
+
+        self.add_operations_from_namespace(c_oper, self.ui.core_operations_list)
+        self.add_operations_from_namespace(s_oper, self.ui.special_operations_list)
+
+    def on_list_widget_item_clicked(self, item):
+        self._create_operation(item)
+
+    def keyPressEvent(self, event):
+        pressed_buttons = []
+        for op in self.operationList:
+            if op.pressed:
+                pressed_buttons.append(op)
+        if event.key() == Qt.Key_Delete:
+            for pressed_op in pressed_buttons:
+                self.operationList.remove(pressed_op)
+                pressed_op.remove()
+                self.move_button_index -= 1
+        super().keyPressEvent(event)
+
+    def connectButton(self, button):
+        if len(self.pressed_ports) < 2:
+            return
+        for i in range(len(self.pressed_ports) - 1):
+            line = Arrow(self.pressed_ports[i], self.pressed_ports[i + 1], self)
+            self.scene.addItem(line)
+            self.signalList.append(line)
+
+        self.update()
+
+    def paintEvent(self, event):
+        for signal in self.signalList:
+            signal.moveLine()
+
+if __name__ == "__main__":
+    app = QApplication(sys.argv)
+    window = MainWindow()
+    window.show()
+    sys.exit(app.exec_())