- added video recording

- scenario and screenshots "save as" buttons
- anti aliasing (default 4 samples)
- bug fixes + many small changes to the default gui
- svg screenshots (toms_svg_generator, only for TriagularGrid)
- todo next: svg screenshots for all grids

.gitignore

@@ -162,4 +162,6 @@ config.ini
 
 .dropbox
 outputs/
-lib/__pycache__/*
\ No newline at end of file
+screenshots/
+videos/
+lib/__pycache__/*

README.md

@@ -19,6 +19,8 @@ For Linux:
     
     6. sudo pip3 install PyQt5
     
+    7. sudo pip3 install opencv-python
+    
 for older Systems (e.g. Ubuntu 14.04) install the PyQt5 version 5.10.1
 
     6. sudo pip3 install PyQt5==5.10.1
@@ -52,6 +54,7 @@ For Windows/Linux/MacOs:
     4. PyOpenGL
     5. Pillow
     6. PyQt5 (in version 5.10.1 for older Systems like Ubuntu 14.04)
+    7. opencv-python
 - press Okey
 - wait until everything is installed
 - chose Run->swarm-sim.py

gui/default_gui.py

 from PyQt5.QtGui import QColor, QIntValidator
 from PyQt5.QtWidgets import (QVBoxLayout, QPushButton, QColorDialog, QRadioButton, QLabel, QTabWidget,
-                             QSlider, QHBoxLayout, QCheckBox, QTabBar, QLineEdit)
+                             QSlider, QHBoxLayout, QCheckBox, QTabBar, QLineEdit, QGroupBox, QComboBox, QStyle)
 from PyQt5.QtCore import Qt
 
-from lib.swarm_sim_header import eprint
+from lib.visualization.utils import show_msg
 
 start_stop_button = None
 world = None
 vis = None
+simtab = None
 
 
 def create_gui(w, v):
-    global world, vis
+    global world, vis, simtab
     world = w
     vis = v
     tabbar = QTabWidget()
     tabbar.setMinimumWidth(200)
-    tabbar.addTab(sim_tab(), "Simulation")
+    simtab = sim_tab()
+    tabbar.addTab(simtab, "Simulation")
     tabbar.addTab(vis_tab(), "Visualization")
     tabbar.addTab(grid_tab(), "Grid")
     tabbar.addTab(matter_tab(), "Matter")
     tabbar.addTab(help_tab(), "Help")
-
     return tabbar
 
 
+def set_disable_sim(disable_flag):
+    global simtab
+    simtab.setDisabled(disable_flag)
+
+
 def key_handler(key, w, v):
     if key == Qt.Key_Space:
         start_stop_button.click()
@@ -77,61 +83,153 @@ def create_slider(tick_interval: int, tick_position: int, max_position: int, min
 def sim_tab():
     tab = QTabBar()
     layout = QVBoxLayout()
-
     global start_stop_button
     # start stop button
+
     start_stop_button = QPushButton("start Simulation")
+    start_stop_button.setIcon(start_stop_button.style().standardIcon(QStyle.SP_MediaPlay))
+    start_stop_button.setStyleSheet("font-weight:bold;")
     status = QLabel("Simulation not running")
-    status.setStyleSheet("color:#ff0000;")
+    status.setStyleSheet("font-weight:bold;color:#bb4444;")
 
     def start_stop_sim():
         vis.start_stop()
         if vis.is_running():
             status.setText("Simulation running")
-            status.setStyleSheet("color:#00ff00;")
+            status.setStyleSheet("font-weight:bold;color:#44bb44;")
             start_stop_button.setText("pause Simulation")
+            start_stop_button.setIcon(start_stop_button.style().standardIcon(QStyle.SP_MediaPause))
         else:
             status.setText("Simulation paused")
-            status.setStyleSheet("color:#0000ff;")
+            status.setStyleSheet("font-weight:bold;color:#4444bb;")
             start_stop_button.setText("unpause Simulation")
+            start_stop_button.setIcon(start_stop_button.style().standardIcon(QStyle.SP_MediaPlay))
+
     start_stop_button.clicked.connect(start_stop_sim)
 
-    # screenshots button
-    screenshot_button = QPushButton("take Screenshot")
+    # screenshot buttons
+    quick_screenshot = QPushButton("quick")
+    save_as_screenshot = QPushButton("save as")
+
+    def qs():
+        vis.take_screenshot(True)
 
-    def take_screenshot():
-        vis.take_screenshot()
-    screenshot_button.clicked.connect(take_screenshot)
+    def sas():
+        vis.take_screenshot(False)
+
+    quick_screenshot.clicked.connect(qs)
+    save_as_screenshot.clicked.connect(sas)
+
+    # WARNING: VECTOR SCREENSHOTS ONLY FOR TRIANGULARGRID IMPLEMENTED!
+    vector_screenshot = QPushButton("export as vector graphics (svg)")
+    def eas():
+        vis.take_vector_screenshot()
+    vector_screenshot.clicked.connect(eas)
+    screenshot_buttons = QHBoxLayout()
+    screenshot_buttons.addWidget(quick_screenshot)
+    screenshot_buttons.addWidget(save_as_screenshot)
+    vbox = QVBoxLayout()
+    vbox.addLayout(screenshot_buttons)
+    vbox.addWidget(vector_screenshot)
+    screenshot_box = QGroupBox("screenshot")
+    screenshot_box.setLayout(vbox)
+
+
+    # recording buttons
+    start_recording_button = QPushButton("start")
+    del_recording_button = QPushButton("delete")
+    export_recording_button = QPushButton("export")
+
+    hbox = QHBoxLayout()
+    hbox.addWidget(start_recording_button)
+    hbox.addWidget(del_recording_button)
+    hbox.addWidget(export_recording_button)
+    recording_box = QGroupBox("Recording")
+    recording_box.setLayout(hbox)
+
+    def startstoprec():
+        if vis.is_recording():
+            start_recording_button.setText("start")
+            recording_box.setTitle("recording")
+            if vis.is_running():
+                start_stop_sim()
+            vis.stop_recording()
+        else:
+            recording_box.setTitle("Recording (running)")
+            start_recording_button.setText("stop")
+            vis.start_recording()
+    start_recording_button.clicked.connect(startstoprec)
+
+    def del_rec():
+        if vis.is_recording():
+            startstoprec()
+        vis.delete_recording()
+    del_recording_button.clicked.connect(del_rec)
+    export_recording_button.clicked.connect(vis.export_recording)
 
-    # reset button
     reset_button = QPushButton("reset Simulation")
 
     def reset_sim():
         world.reset()
+        start_stop_button.setText("start Simulation")
+        start_stop_button.setIcon(start_stop_button.style().standardIcon(QStyle.SP_MediaPlay))
         status.setText("Simulation not running")
-        status.setStyleSheet("color:#ff0000;")
+        status.setStyleSheet("font-weight:bold;color:#bb4444;")
 
     reset_button.clicked.connect(reset_sim)
 
-    save_scenario_button = QPushButton("save Scenario")
+    quick_scenario_button = QPushButton("quick")
+    save_as_scenario_button = QPushButton("save as")
+
+    def qs_scenario(): world.save_scenario(True)
+    def sas_scenario(): world.save_scenario(False)
 
-    def save_scenario():
-        world.save_scenario()
+    quick_scenario_button.clicked.connect(qs_scenario)
+    save_as_scenario_button.clicked.connect(sas_scenario)
+    scenario_buttons = QHBoxLayout()
+    scenario_buttons.addWidget(quick_scenario_button)
+    scenario_buttons.addWidget(save_as_scenario_button)
+    scenario_box = QGroupBox("scenario")
+    scenario_box.setLayout(scenario_buttons)
+
+    sim_box = QGroupBox("main controls")
+    vbox = QVBoxLayout()
+    vbox.addWidget(status)
+    vbox.addWidget(start_stop_button)
+    vbox.addLayout(get_rps_slider())
+    vbox.addWidget(reset_button)
+    sim_box.setLayout(vbox)
+    layout.addWidget(sim_box)
+    layout.addWidget(screenshot_box)
+    layout.addWidget(scenario_box)
+    layout.addWidget(recording_box)
+
+    new_matter_box = QGroupBox("new matter")
+    vbox = QVBoxLayout()
+    vbox.addLayout(get_matter_radios())
+    vbox.addWidget(get_new_matter_color_picker())
+    new_matter_box.setLayout(vbox)
+    layout.addWidget(new_matter_box)
 
-    save_scenario_button.clicked.connect(save_scenario)
-    layout.addWidget(status, alignment=Qt.AlignBaseline)
-    layout.addWidget(start_stop_button, alignment=Qt.AlignBaseline)
-    layout.addLayout(get_rps_slider())
-    layout.addWidget(screenshot_button, alignment=Qt.AlignBaseline)
-    layout.addWidget(reset_button, alignment=Qt.AlignBaseline)
-    layout.addWidget(save_scenario_button, alignment=Qt.AlignBaseline)
-    layout.addLayout(get_matter_radios())
     layout.addStretch(0)
     tab.setLayout(layout)
 
     return tab
 
 
+def get_new_matter_color_picker():
+    cp_button = QPushButton("change color of new matter")
+
+    def cp():
+        cd = QColorDialog()
+        cd.setCurrentColor(QColor.fromRgbF(*vis.get_added_matter_color()))
+        cd.exec()
+        if cd.result() == 1:
+            vis.set_added_matter_color((cd.selectedColor().getRgbF()))
+    cp_button.clicked.connect(cp)
+    return cp_button
+
+
 def get_matter_radios():
     p_radio = QRadioButton("particle")
     p_radio.setChecked(False)
@@ -139,7 +237,6 @@ def get_matter_radios():
     t_radio.setChecked(True)
     l_radio = QRadioButton("location")
     l_radio.setChecked(False)
-    desc = QLabel("matter type to be created/removed:")
 
     def on_toggle():
         if p_radio.isChecked():
@@ -156,10 +253,9 @@ def get_matter_radios():
     l_radio.toggled.connect(on_toggle)
 
     vbox = QVBoxLayout()
-    vbox.addWidget(desc, alignment=Qt.AlignBaseline)
-    vbox.addWidget(p_radio, alignment=Qt.AlignBaseline)
-    vbox.addWidget(t_radio, alignment=Qt.AlignBaseline)
-    vbox.addWidget(l_radio, alignment=Qt.AlignBaseline)
+    vbox.addWidget(p_radio)
+    vbox.addWidget(t_radio)
+    vbox.addWidget(l_radio)
 
     return vbox
 
@@ -167,29 +263,43 @@ def get_matter_radios():
 def get_rps_slider():
     hbox = QVBoxLayout()
     desc = QLabel("rounds per second (%d) : " % vis.get_rounds_per_second())
-    hbox.addWidget(desc, alignment=Qt.AlignBaseline)
+    hbox.addWidget(desc)
 
     def set_rps(value):
         vis.set_rounds_per_second(value)
         desc.setText("rounds per second (%d) : " % vis.get_rounds_per_second())
 
-    hbox.addWidget(create_slider(10, 2, 120, 1, vis.get_rounds_per_second(), set_rps), alignment=Qt.AlignBaseline)
+    hbox.addWidget(create_slider(10, 2, 120, 1, vis.get_rounds_per_second(), set_rps))
     return hbox
 
 
 def vis_tab():
     tab = QTabBar()
     layout = QVBoxLayout()
-    layout.addLayout(get_projection_switch())
-    layout.addLayout(get_fov_slider())
-    layout.addLayout(get_render_distance_slider())
-    layout.addLayout(get_drag_sens_slider())
-    layout.addLayout(get_zoom_sens_slider())
-    layout.addLayout(get_rota_sens_slider())
-    layout.addLayout(get_vis_show_checkboxes())
-    reset_position_button = QPushButton("reset position")
+    proj_box = QGroupBox("projection settings")
+    vbox = QVBoxLayout()
+    vbox.addLayout(get_projection_switch())
+    vbox.addLayout(get_fov_slider())
+    vbox.addLayout(get_render_distance_slider())
+    proj_box.setLayout(vbox)
+    layout.addWidget(proj_box)
+    sens_slider_box = QGroupBox("control sensitivity")
+    vbox = QVBoxLayout()
+    vbox.addLayout(get_drag_sens_slider())
+    vbox.addLayout(get_zoom_sens_slider())
+    vbox.addLayout(get_rota_sens_slider())
+    sens_slider_box.setLayout(vbox)
+    layout.addWidget(sens_slider_box)
+
+    misc_box = QGroupBox("miscellaneous")
+    vbox = QVBoxLayout()
+    vbox.addLayout(get_antialiasing_combobox())
+    vbox.addLayout(get_vis_show_checkboxes())
+    reset_position_button = QPushButton("reset camera position")
     reset_position_button.clicked.connect(vis.reset_camera_position)
-    layout.addWidget(reset_position_button, alignment=Qt.AlignBaseline)
+    vbox.addWidget(reset_position_button)
+    misc_box.setLayout(vbox)
+    layout.addWidget(misc_box)
     layout.addStretch(0)
     tab.setLayout(layout)
     return tab
@@ -221,6 +331,8 @@ def matter_tab():
 
 def get_scaler(mattertype):
     if mattertype == "particle":
+        current_scaling = vis.get_particle_scaling()
+
         def x_scaler_change(value):
             cs = vis.get_particle_scaling()
             new_scaling = (value/10.0, cs[1], cs[2])
@@ -236,6 +348,8 @@ def get_scaler(mattertype):
             new_scaling = (cs[0], cs[1], value/10.0)
             vis.set_particle_scaling(new_scaling)
     elif mattertype == "tile":
+        current_scaling = vis.get_tile_scaling()
+
         def x_scaler_change(value):
             cs = vis.get_tile_scaling()
             new_scaling = (value / 10.0, cs[1], cs[2])
@@ -251,6 +365,8 @@ def get_scaler(mattertype):
             new_scaling = (cs[0], cs[1], value / 10.0)
             vis.set_tile_scaling(new_scaling)
     else:
+        current_scaling = vis.get_location_scaling()
+
         def x_scaler_change(value):
             cs = vis.get_location_scaling()
             new_scaling = (value / 10.0, cs[1], cs[2])
@@ -266,7 +382,6 @@ def get_scaler(mattertype):
             new_scaling = (cs[0], cs[1], value / 10.0)
             vis.set_location_scaling(new_scaling)
 
-    current_scaling = vis.get_particle_scaling()
     x_desc = QLabel("x scale:")
     y_desc = QLabel("y scale:")
     z_desc = QLabel("z scale:")
@@ -275,19 +390,19 @@ def get_scaler(mattertype):
     z_scaler = create_slider(2, 2, 20, 1, current_scaling[0]*10, z_scaler_change)
 
     hbox1 = QHBoxLayout()
-    hbox1.addWidget(x_desc, alignment=Qt.AlignBaseline)
-    hbox1.addWidget(x_scaler, alignment=Qt.AlignBaseline)
+    hbox1.addWidget(x_desc)
+    hbox1.addWidget(x_scaler)
 
     hbox2 = QHBoxLayout()
-    hbox2.addWidget(y_desc, alignment=Qt.AlignBaseline)
-    hbox2.addWidget(y_scaler, alignment=Qt.AlignBaseline)
+    hbox2.addWidget(y_desc)
+    hbox2.addWidget(y_scaler)
 
     hbox3 = QHBoxLayout()
-    hbox3.addWidget(z_desc, alignment=Qt.AlignBaseline)
-    hbox3.addWidget(z_scaler, alignment=Qt.AlignBaseline)
+    hbox3.addWidget(z_desc)
+    hbox3.addWidget(z_scaler)
 
     vbox = QVBoxLayout()
-    vbox.addWidget(QLabel("%s scaling:" % mattertype), alignment=Qt.AlignBaseline)
+    vbox.addWidget(QLabel("%s scaling:" % mattertype))
     vbox.addLayout(hbox1)
     vbox.addLayout(hbox2)
     vbox.addLayout(hbox3)
@@ -298,20 +413,20 @@ def get_scaler(mattertype):
 def get_fov_slider():
     hbox = QVBoxLayout()
     desc = QLabel("(only for perspective projection)\nfield of view (%d°) : " % vis.get_field_of_view())
-    hbox.addWidget(desc, alignment=Qt.AlignBaseline)
+    hbox.addWidget(desc)
 
     def set_fov(value):
         vis.set_field_of_view(value)
         desc.setText("(only for perspective projection)\nfield of view (%d°) : " % vis.get_field_of_view())
 
-    hbox.addWidget(create_slider(10, 2, 120, 10, vis.get_field_of_view(), set_fov), alignment=Qt.AlignBaseline)
+    hbox.addWidget(create_slider(10, 2, 120, 10, vis.get_field_of_view(), set_fov))
     return hbox
 
 
 def get_drag_sens_slider():
-    hbox = QVBoxLayout()
-    desc = QLabel("drag sensitivity:")
-    hbox.addWidget(desc, alignment=Qt.AlignBaseline)
+    hbox = QHBoxLayout()
+    desc = QLabel("drag:")
+    hbox.addWidget(desc)
 
     def set_ds(value):
         vis.set_drag_sensitivity(5100-value)
@@ -322,56 +437,57 @@ def get_drag_sens_slider():
 
 
 def get_zoom_sens_slider():
-    hbox = QVBoxLayout()
-    desc = QLabel("zoom sensitivity:")
-    hbox.addWidget(desc, alignment=Qt.AlignBaseline)
+    hbox = QHBoxLayout()
+    desc = QLabel("zoom:")
+    hbox.addWidget(desc)
 
     def set_zs(value):
         vis.set_zoom_sensitivity(1001-value)
 
-    hbox.addWidget(create_slider(100, 2, 1000, 1, 1001-vis.get_zoom_sensitivity(), set_zs), alignment=Qt.AlignBaseline)
+    hbox.addWidget(create_slider(100, 2, 1000, 1, 1001-vis.get_zoom_sensitivity(), set_zs))
     return hbox
 
 
 def get_rota_sens_slider():
-    hbox = QVBoxLayout()
-    desc = QLabel("(only for 3D)\nrotation sensitivity:")
-    hbox.addWidget(desc, alignment=Qt.AlignBaseline)
+    hbox = QHBoxLayout()
+    desc = QLabel("(only 3D)\nrotation:")
+    hbox.addWidget(desc)
 
     def set_rs(value):
         vis.set_rotation_sensitivity(11-value)
 
-    hbox.addWidget(create_slider(1, 2, 10, 1, 11-vis.get_rotation_sensitivity(), set_rs), alignment=Qt.AlignBaseline)
+    hbox.addWidget(create_slider(1, 2, 10, 1, 11-vis.get_rotation_sensitivity(), set_rs))
     return hbox
 
 
 def get_projection_switch():
     vbox = QVBoxLayout()
     desc = QLabel("projection type:")
-    vbox.addWidget(desc, alignment=Qt.AlignBaseline)
+    vbox.addWidget(desc)
 
     o = QRadioButton("orthographic")
 
     def orth_toggle():
         if o.isChecked():
             vis.set_projection_type("ortho")
-    o.toggled.connect(orth_toggle)
 
     p = QRadioButton("perspective")
 
+    def pers_toggle():
+        if p.isChecked():
+            vis.set_projection_type("perspective")
+
     if vis.get_projection_type() == "ortho":
         o.setChecked(True)
     else:
         p.setChecked(True)
 
-    def pers_toggle():
-        if p.isChecked():
-            vis.set_projection_type("perspective")
+    o.toggled.connect(orth_toggle)
     p.toggled.connect(pers_toggle)
 
     hbox = QHBoxLayout()
-    hbox.addWidget(o, alignment=Qt.AlignBaseline)
-    hbox.addWidget(p, alignment=Qt.AlignBaseline)
+    hbox.addWidget(o)
+    hbox.addWidget(p)
     vbox.addLayout(hbox)
     return vbox
 
@@ -427,13 +543,13 @@ def get_color_picker():
 
     vbox = QVBoxLayout()
     desc = QLabel("change color of:")
-    vbox.addWidget(desc, alignment=Qt.AlignBaseline)
+    vbox.addWidget(desc)
     hbox1 = QHBoxLayout()
-    hbox1.addWidget(lines_button, alignment=Qt.AlignBaseline)
-    hbox1.addWidget(locs_button, alignment=Qt.AlignBaseline)
+    hbox1.addWidget(lines_button)
+    hbox1.addWidget(locs_button)
     hbox2 = QHBoxLayout()
-    hbox2.addWidget(bg_button, alignment=Qt.AlignBaseline)
-    hbox2.addWidget(brd_button, alignment=Qt.AlignBaseline)
+    hbox2.addWidget(bg_button)
+    hbox2.addWidget(brd_button)
     vbox.addLayout(hbox1)
     vbox.addLayout(hbox2)
     return vbox
@@ -442,13 +558,13 @@ def get_color_picker():
 def get_render_distance_slider():
     vbox = QVBoxLayout()
     desc = QLabel("render distance (%d):" % vis.get_render_distance())
-    vbox.addWidget(desc, alignment=Qt.AlignBaseline)
+    vbox.addWidget(desc)
 
     def set_mrd(value):
         vis.set_render_distance(value)
         desc.setText("render distance (%d):" % vis.get_render_distance())
 
-    vbox.addWidget(create_slider(10, 2, 5000, 5, vis.get_render_distance(), set_mrd), alignment=Qt.AlignBaseline)
+    vbox.addWidget(create_slider(500, 2, 5000, 5, vis.get_render_distance(), set_mrd))
     return vbox
 
 
@@ -480,11 +596,11 @@ def get_vis_show_checkboxes():
 
     rl_cb.clicked.connect(rl_clicked)
 
-    hbox = QHBoxLayout()
-    hbox.addWidget(center_cb, alignment=Qt.AlignBaseline)
-    hbox.addWidget(focus_cb, alignment=Qt.AlignBaseline)
-    hbox.addWidget(rl_cb, alignment=Qt.AlignBaseline)
-    return hbox
+    vbox = QVBoxLayout()
+    vbox.addWidget(center_cb)
+    vbox.addWidget(focus_cb)
+    vbox.addWidget(rl_cb)
+    return vbox
 
 
 def get_show_checkboxes():
@@ -507,8 +623,8 @@ def get_show_checkboxes():
     coords_cb.clicked.connect(coords_clicked)
 
     hbox = QHBoxLayout()
-    hbox.addWidget(lines_cb, alignment=Qt.AlignBaseline)
-    hbox.addWidget(coords_cb, alignment=Qt.AlignBaseline)
+    hbox.addWidget(lines_cb)
+    hbox.addWidget(coords_cb)
     if world.config_data.border:
         border_cb = QCheckBox()
         border_cb.setText("show border")
@@ -518,7 +634,7 @@ def get_show_checkboxes():
             vis.set_show_border(border_cb.isChecked())
 
         border_cb.clicked.connect(border_clicked)
-        hbox.addWidget(border_cb, alignment=Qt.AlignBaseline)
+        hbox.addWidget(border_cb)
 
     return hbox
 
@@ -526,7 +642,7 @@ def get_show_checkboxes():
 def get_grid_lines_scale_slider():
     vbox = QVBoxLayout()
     desc = QLabel("grid lines scale (%d%%):" % int(vis.get_grid_line_scaling()[0]*100))
-    vbox.addWidget(desc, alignment=Qt.AlignBaseline)
+    vbox.addWidget(desc)
 
     def set_scale(value):
         vis.set_grid_line_scaling([value/50.0, value/50.0, value/50.0])
@@ -540,7 +656,7 @@ def get_grid_lines_scale_slider():
 def get_grid_coordinates_scale_slider():
     vbox = QVBoxLayout()
     desc = QLabel("grid coordinates model scale (%d%%):" % int(vis.get_grid_coordinates_scaling()[0]*500))
-    vbox.addWidget(desc, alignment=Qt.AlignBaseline)
+    vbox.addWidget(desc)
 
     def set_scale(value):
         vis.set_grid_coordinates_scaling([value/1000.0, value/1000.0, value/1000.0])
@@ -563,11 +679,30 @@ def recalculate_grid():
         if size_edit.text().isnumeric():
             vis.recalculate_grid(int(size_edit.text()))
         else:
-            eprint("warning: grid size has to be a number")
+            show_msg("Grid size has to be a number.", 2)
 
     rec_button.clicked.connect(on_click)
 
-    hbox.addWidget(rec_button, alignment=Qt.AlignBaseline)
-    hbox.addWidget(size_edit, alignment=Qt.AlignBaseline)
+    hbox.addWidget(rec_button)
+    hbox.addWidget(size_edit)
 
     return hbox
+
+
+def get_antialiasing_combobox():
+    hbox = QHBoxLayout()
+    combo = QComboBox()
+    combo.addItem("disabled", 0)
+    combo.addItem("2 samples", 2)
+    combo.addItem("4 samples", 4)
+    combo.addItem("8 samples", 8)
+    combo.setCurrentIndex(2)
+
+    def onchange():
+        vis.set_antialiasing(combo.currentData())
+
+    combo.currentIndexChanged.connect(onchange)
+    hbox.addWidget(QLabel("antialiasing:"))
+    hbox.addWidget(combo)
+
+    return hbox
\ No newline at end of file

lib/config.py

@@ -9,6 +9,7 @@ class ConfigData:
     def __init__(self):
         config = configparser.ConfigParser(allow_no_value=True)
         config.read("config.ini")