Better folder organization

src/.flake8

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+[flake8]
+ignore = E221, E501, W605, W504

src/audio_player.py

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+import os
+from pygame import mixer
+from PyQt5.QtCore import QTimer, pyqtSlot, QObject
+
+from constants import Constants
+import qtawesome as qta
+
+
+class AudioPlayer(QObject):
+    """Subclass QObject. Audio player widget for the audio samples.
+
+    The only public methods are the __init__
+    method, set_audio_player, which loads the current file and refresh_btns_colors.
+    Everything else is managed internally."""
+
+    _TIME_STEP = 500  # Milliseconds.
+
+    def __init__(self, play,
+                 pause,
+                 stop,
+                 volume,
+                 audio_progress,
+                 active_color,
+                 inactive_color):
+        """Initialize the player."""
+        super().__init__()
+        self._paused = False
+        self._first_call = True
+        self._play = play
+        self._pause = pause
+        self._stop = stop
+        self._volume = volume
+        self._audio_progress = audio_progress
+        self._audio_file = None
+        self._timer = QTimer()
+        self._timer.timeout.connect(self._update_bar)
+        self._play.clicked.connect(self._play_audio)
+        self._pause.clicked.connect(self._pause_audio)
+        self._stop.clicked.connect(self._stop_audio)
+        self._volume.valueChanged.connect(self._set_volume)
+        self._play.setIconSize(self._play.size())
+        self._pause.setIconSize(self._pause.size())
+        self._stop.setIconSize(self._stop.size())
+        self.refresh_btns_colors(active_color, inactive_color)
+
+    def refresh_btns_colors(self, active_color, inactive_color):
+        """Repaint the buttons of the widgetd after the theme has changed."""
+        self._play.setIcon(qta.icon('fa5.play-circle',
+                                    color=active_color,
+                                    color_disabled=inactive_color))
+        self._pause.setIcon(qta.icon('fa5.pause-circle',
+                                     color=active_color,
+                                     color_disabled=inactive_color))
+        self._stop.setIcon(qta.icon('fa5.stop-circle',
+                                    color=active_color,
+                                    color_disabled=inactive_color))
+
+    @pyqtSlot()
+    def _set_volume(self):
+        """Set the volume of the audio samples."""
+        if mixer.get_init():
+            mixer.music.set_volume(
+                self._volume.value() / self._volume.maximum()
+            )
+
+    def _reset_audio_widget(self):
+        """Reset the widget. Stop all playing samples."""
+        if mixer.get_init():
+            if mixer.music.get_busy():
+                mixer.music.stop()
+                self._timer.stop()
+            mixer.quit()
+        self._audio_progress.reset()
+        self._enable_buttons(False, False, False)
+        self._paused = False
+
+    @pyqtSlot()
+    def _update_bar(self):
+        """Update the progress bar."""
+        pos = mixer.music.get_pos()
+        if pos == -1:
+            self._timer.stop()
+            self._audio_progress.reset()
+            self._enable_buttons(True, False, False)
+        else:
+            self._audio_progress.setValue(pos)
+
+    def _set_max_progress_bar(self):
+        """Set the maximum value of the progress bar."""
+        self._audio_progress.setMaximum(
+            mixer.Sound(self._audio_file).get_length() * 1000
+        )
+
+    def set_audio_player(self, fname=""):
+        """Set the current audio sample."""
+        self._first_call = True
+        self._reset_audio_widget()
+        full_name = os.path.join(
+            Constants.DATA_FOLDER,
+            Constants.AUDIO_FOLDER,
+            fname + '.ogg'
+        )
+        if os.path.exists(full_name):
+            self._play.setEnabled(True)
+            self._audio_file = full_name
+
+    @pyqtSlot()
+    def _play_audio(self):
+        """Play the audio sample."""
+        if not self._paused:
+            if self._first_call:
+                self._first_call = False
+                mixer.init(48000, -16, 1, 1024)
+                mixer.music.load(self._audio_file)
+                self._set_volume()
+                self._set_max_progress_bar()
+            mixer.music.play()
+        else:
+            mixer.music.unpause()
+            self._paused = False
+        self._timer.start(self._TIME_STEP)
+        self._enable_buttons(False, True, True)
+
+    @pyqtSlot()
+    def _stop_audio(self):
+        """Stop the audio sample."""
+        mixer.music.stop()
+        self._audio_progress.reset()
+        self._timer.stop()
+        self._enable_buttons(True, False, False)
+
+    @pyqtSlot()
+    def _pause_audio(self):
+        """Pause the audio sample."""
+        mixer.music.pause()
+        self._timer.stop()
+        self._paused = True
+        self._enable_buttons(True, False, False)
+
+    def _enable_buttons(self, play_en, pause_en, stop_en):
+        """Set the three buttons status."""
+        self._play.setEnabled(play_en)
+        self._pause.setEnabled(pause_en)
+        self._stop.setEnabled(stop_en)

src/clickable_progress_bar.py

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+from PyQt5.QtWidgets import QProgressBar
+from PyQt5.QtCore import Qt, pyqtSignal
+from constants import Constants
+
+
+class ClickableProgressBar(QProgressBar):
+    """Subclass QProgressBar. Clickable progress bar class."""
+
+    clicked = pyqtSignal()
+
+    def __init__(self, parent=None):
+        """Initialize the instance."""
+        self._text = ''
+        super().__init__(parent)
+
+    def text(self):
+        """Return the text displayed on the bar."""
+        return self._text
+
+    def set_idle(self):
+        """Set the bar to a non-downloading status."""
+        self._text = Constants.CLICK_TO_UPDATE_STR
+        self.setMaximum(self.minimum() + 1)
+
+    def set_updating(self):
+        """Set the bar to a downloading status."""
+        self._text = Constants.UPDATING_STR
+        self.setMaximum(self.minimum())
+
+    def mousePressEvent(self, event):
+        """Override QWidget.mousePressEvent. Detect a click on the bar."""
+        if event.button() == Qt.LeftButton:
+            self.clicked.emit()
+        else:
+            super().mousePressEvent(event)

src/constants.py

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+from collections import namedtuple
+from enum import Enum, auto
+import os.path
+
+
+class Ftype:
+    """Container class to differentiate between frequency and band.
+
+    Used in reset_fb_filters.
+    """
+
+    FREQ = "freq"
+    BAND = "band"
+
+
+class GfdType(Enum):
+    """Enum class to differentiate the possible GFD search criterias."""
+
+    FREQ = auto()
+    LOC  = auto()
+
+
+class ChecksumWhat(Enum):
+    """Enum class to distinguish the object you want to verify the checksum."""
+
+    FOLDER = auto()
+    DB = auto()
+
+
+class Messages:
+    """Container class for messages to be displayed."""
+
+    DB_UP_TO_DATE            = "Already up to date"
+    DB_UP_TO_DATE_MSG        = "No newer version to download."
+    DB_NEW_VER               = "New version available"
+    DB_NEW_VER_MSG           = "A new version of the database is available for download."
+    NO_DB_AVAIL              = "No database detected."
+    NO_DB                    = "No database"
+    DOWNLOAD_NOW_QUESTION    = "Do you want to download it now?"
+    DOWNLOAD_ANYWAY_QUESTION = "Do you want to download it anyway?"
+    NO_CONNECTION            = "No connection"
+    NO_CONNECTION_MSG        = "Unable to establish an internet connection."
+    BAD_DOWNLOAD             = "Something went wrong"
+    BAD_DOWNLOAD_MSG         = "Something went wrong with the downaload.\nCheck your internet connection and try again."
+    SLOW_CONN                = "Slow internet connection"
+    SLOW_CONN_MSG            = "Your internet connection is unstable or too slow."
+
+
+class Signal:
+    """Container class for the signal property names."""
+
+    NAME          = "name"
+    INF_FREQ      = "inf_freq"
+    SUP_FREQ      = "sup_freq"
+    MODE          = "mode"
+    INF_BAND      = "inf_band"
+    SUP_BAND      = "sup_band"
+    LOCATION      = "location"
+    URL           = "url"
+    DESCRIPTION   = "description"
+    MODULATION    = "modulation"
+    CATEGORY_CODE = "category_code"
+    ACF           = "acf"
+    WIKI_CLICKED  = "url_clicked"
+
+
+class Database:
+    """Container class for the database-related constants."""
+
+    LINK_LOC  = "https://aresvalley.com/Storage/Artemis/Database/data.zip"
+    LINK_REF  = "https://aresvalley.com/Storage/Artemis/Database/data.zip.log"
+    NAME      = "db.csv"
+    NAMES     = (Signal.NAME,
+                 Signal.INF_FREQ,
+                 Signal.SUP_FREQ,
+                 Signal.MODE,
+                 Signal.INF_BAND,
+                 Signal.SUP_BAND,
+                 Signal.LOCATION,
+                 Signal.URL,
+                 Signal.DESCRIPTION,
+                 Signal.MODULATION,
+                 Signal.CATEGORY_CODE,
+                 Signal.ACF)
+    DELIMITER = "*"
+    STRINGS   = (Signal.INF_FREQ,
+                 Signal.SUP_FREQ,
+                 Signal.MODE,
+                 Signal.INF_BAND,
+                 Signal.SUP_BAND,
+                 Signal.CATEGORY_CODE)
+
+
+class ForecastColors:
+    """Container class for the forecast labels colors."""
+
+    WARNING_COLOR = "#F95423"
+    KP9_COLOR     = "#FFCCCB"
+    KP8_COLOR     = "#FFCC9A"
+    KP7_COLOR     = "#FFFECD"
+    KP6_COLOR     = "#CDFFCC"
+    KP5_COLOR     = "#BEE3FE"
+
+
+_Band = namedtuple("Band", ["lower", "upper"])
+
+
+class Constants:
+    """Container class for several constants of the software."""
+
+    CLICK_TO_UPDATE_STR     = "Click to update"
+    SIGIDWIKI               = "https://www.sigidwiki.com/wiki/Signal_Identification_Guide"
+    ADD_SIGNAL_LINK         = "https://www.sigidwiki.com/index.php/Special:FormEdit/Signal/?preload=Signal_Identification_Wiki:Signal_form_preload_text"
+    FORUM_LINK              = "https://aresvalley.com/community/"
+    ARESVALLEY_LINK         = "https://aresvalley.com/"
+    RTL_SDL_LINK            = "https://www.rtl-sdr.com/"
+    UPDATING_STR            = "Updating..."
+    ACF_DOCS                = "https://aresvalley.com/documentation/"
+    FORECAST_PROBABILITIES  = "https://services.swpc.noaa.gov/text/sgarf.txt"
+    SPACE_WEATHER_XRAY      = "https://services.swpc.noaa.gov/text/goes-xray-flux-primary.txt"
+    SPACE_WEATHER_PROT_EL   = "https://services.swpc.noaa.gov/text/goes-particle-flux-primary.txt"
+    SPACE_WEATHER_AK_INDEX  = "https://services.swpc.noaa.gov/text/wwv.txt"
+    SPACE_WEATHER_SGAS      = "https://services.swpc.noaa.gov/text/sgas.txt"
+    SPACE_WEATHER_GEO_STORM = "https://services.swpc.noaa.gov/text/3-day-forecast.txt"
+    SPACE_WEATHER_INFO      = "https://www.swpc.noaa.gov/sites/default/files/images/NOAAscales.pdf"
+    SPACE_WEATHER_IMGS      = ["http://www.mmmonvhf.de/eme/eme.png",
+                               "http://www.mmmonvhf.de/ms/ms.png",
+                               "http://www.mmmonvhf.de/es/es.png",
+                               "http://www.mmmonvhf.de/solar/solar.png",
+                               "http://amunters.home.xs4all.nl/eskip50status.gif",
+                               "http://amunters.home.xs4all.nl/eskip70status.gif",
+                               "http://amunters.home.xs4all.nl/eskipstatus.gif",
+                               "https://amunters.home.xs4all.nl/eskipstatusNA.gif",
+                               "https://amunters.home.xs4all.nl/aurorastatus.gif"]
+    SEARCH_LABEL_IMG        = "search_icon.png"
+    VOLUME_LABEL_IMG        = "volume.png"
+    DATA_FOLDER             = "Data"
+    SPECTRA_FOLDER          = "Spectra"
+    SPECTRA_EXT             = ".png"
+    AUDIO_FOLDER            = "Audio"
+    ACTIVE                  = "active"
+    INACTIVE                = "inactive"
+    LABEL_ON_COLOR          = "on"
+    LABEL_OFF_COLOR         = "off"
+    TEXT_COLOR              = "text"
+    _ELF                    = _Band(0, 30)  # Formally it is (3, 30) Hz.
+    _SLF                    = _Band(30, 300)
+    _ULF                    = _Band(300, 3000)
+    _VLF                    = _Band(3000, 30000)
+    _LF                     = _Band(30 * 10**3, 300 * 10**3)
+    _MF                     = _Band(300 * 10 ** 3, 3000 * 10**3)
+    _HF                     = _Band(3 * 10**6, 30 * 10**6)
+    _VHF                    = _Band(30 * 10**6, 300 * 10**6)
+    _UHF                    = _Band(300 * 10**6, 3000 * 10**6)
+    _SHF                    = _Band(3 * 10**9, 30 * 10**9)
+    _EHF                    = _Band(30 * 10**9, 300 * 10**9)
+    BANDS                   = (_ELF, _SLF, _ULF, _VLF, _LF, _MF, _HF, _VHF, _UHF, _SHF, _EHF)
+    MAX_DIGITS              = 3
+    RANGE_SEPARATOR         = ' ÷ '
+    GFD_SITE                = "http://qrg.globaltuners.com/"
+    CONVERSION_FACTORS      = {"Hz": 1,
+                               "kHz": 1000,
+                               "MHz": 1000000,
+                               "GHz": 1000000000}
+    MODES                   = {"FM": ("NFM", "WFM"),
+                               "AM": (),
+                               "CW": (),
+                               "SK": ("FSK", "PSK", "MSK"),
+                               "SB": ("LSB", "USB", "DSB"),
+                               "Chirp Spread Spectrum": (),
+                               "FHSS-TDM": (),
+                               "RAW": (),
+                               "SC-FDMA": ()}
+    APPLY                   = "Apply"
+    REMOVE                  = "Remove"
+    UNKNOWN                 = "N/A"
+    EXTRACTING_MSG          = "Extracting..."
+    EXTRACTING_CODE         = -1
+    ZERO_INITIAL_SPEED      = -1
+    ZERO_FINAL_SPEED        = -2
+    NOT_AVAILABLE           = "spectrumnotavailable.png"
+    NOT_SELECTED            = "nosignalselected.png"
+    FIELD_SEPARATOR         = ";"
+    DEFAULT_IMGS_FOLDER     = os.path.join(":", "pics", "default_pics")
+    DEFAULT_NOT_SELECTED    = os.path.join(DEFAULT_IMGS_FOLDER, NOT_SELECTED)
+    DEFAULT_NOT_AVAILABLE   = os.path.join(DEFAULT_IMGS_FOLDER, NOT_AVAILABLE)

src/default_imgs.qrc

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+<RCC>
+  <qresource prefix="icon">
+    <file>default_pics/Artemis3.500px.png</file>
+  </qresource>
+  <qresource prefix="pics">
+    <file>default_pics/nosignalselected.png</file>
+    <file>default_pics/spectrumnotavailable.png</file>
+  </qresource>
+</RCC>

src/double_text_button.py

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+from PyQt5.QtWidgets import QPushButton
+from PyQt5.QtCore import pyqtSlot
+
+
+class DoubleTextButton(QPushButton):
+    """Subclass QPushButton.
+
+    A click will deactivate/activate a series of 'slave' widgets depending
+    on the 'checked' status of the button."""
+
+    def __init__(self, parent=None):
+        """Extends QPushButton.__init__."""
+        super().__init__(parent)
+        self.clicked.connect(self._manage_click)
+
+    def set_texts(self, text_a, text_b):
+        """Set the two texts to be displayed."""
+        self._text_a = text_a
+        self._text_b = text_b
+
+    def set_slave_filters(self, simple_ones=None,
+                          radio_1=None,
+                          ruled_by_radio_1=None,
+                          radio_2=None,
+                          ruled_by_radio_2=None):
+        """Set all the 'slave' widgets.
+
+        Keyword arguments:
+        simple_ones -- a list of widgets.
+        radio_1 -- a radio button.
+        ruled_by_radio_1 -- a list of widgets whose status depend upon radio_1.
+        radio_2 -- a radio button.
+        ruled_by_radio_2 -- a list of widgets whose status depend upon radio_2."""
+        self._simple_ones = simple_ones
+        self._ruled_by_radio_1 = ruled_by_radio_1
+        self._radio_1 = radio_1
+        self._ruled_by_radio_2 = ruled_by_radio_2
+        self._radio_2 = radio_2
+
+    @pyqtSlot()
+    def _manage_click(self):
+        """Set the status of all the 'slave widgets' based on the status of the instance."""
+        if self.isChecked():
+            self.setText(self._text_b)
+            enable = False
+        else:
+            self.setText(self._text_a)
+            enable = True
+        for f in self._simple_ones:
+            f.setEnabled(enable)
+        radio_btns = self._radio_1, self._radio_2
+        ruled_widgets = self._ruled_by_radio_1, self._ruled_by_radio_2
+        for radio_btn, ruled_by in zip(radio_btns, ruled_widgets):
+            if ruled_by:
+                for f in ruled_by:
+                    if radio_btn.isChecked():
+                        f.setEnabled(enable)
+                    else:
+                        f.setEnabled(False)

src/download_db_window.ui

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+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>Form</class>
+ <widget class="QWidget" name="Form">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>400</width>
+    <height>160</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Download database</string>
+  </property>
+  <property name="windowIcon">
+   <iconset resource="default_imgs.qrc">
+    <normaloff>:/icon/default_pics/Artemis3.500px.png</normaloff>:/icon/default_pics/Artemis3.500px.png</iconset>
+  </property>
+  <property name="styleSheet">
+   <string notr="true"/>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <widget class="QLabel" name="label">
+     <property name="font">
+      <font>
+       <pointsize>12</pointsize>
+      </font>
+     </property>
+     <property name="text">
+      <string>Downloading database
+Please wait...
+</string>
+     </property>
+     <property name="alignment">
+      <set>Qt::AlignCenter</set>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QLabel" name="status_lbl">
+     <property name="font">
+      <font>
+       <pointsize>12</pointsize>
+      </font>
+     </property>
+     <property name="text">
+      <string>status</string>
+     </property>
+     <property name="alignment">
+      <set>Qt::AlignCenter</set>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QLabel" name="speed_lbl">
+     <property name="font">
+      <font>
+       <pointsize>12</pointsize>
+      </font>
+     </property>
+     <property name="text">
+      <string>Speed</string>
+     </property>
+     <property name="alignment">
+      <set>Qt::AlignCenter</set>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QProgressBar" name="progressBar">
+     <property name="minimum">
+      <number>0</number>
+     </property>
+     <property name="maximum">
+      <number>0</number>
+     </property>
+     <property name="value">
+      <number>-1</number>
+     </property>
+     <property name="textVisible">
+      <bool>false</bool>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QPushButton" name="cancel_btn">
+     <property name="font">
+      <font>
+       <pointsize>12</pointsize>
+      </font>
+     </property>
+     <property name="styleSheet">
+      <string notr="true"/>
+     </property>
+     <property name="text">
+      <string>Cancel</string>
+     </property>
+     <property name="autoDefault">
+      <bool>true</bool>
+     </property>
+     <property name="default">
+      <bool>false</bool>
+     </property>
+     <property name="flat">
+      <bool>false</bool>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources>
+  <include location="default_imgs.qrc"/>
+ </resources>
+ <connections/>
+</ui>

src/download_window.py

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+from PyQt5 import uic
+from PyQt5.QtCore import Qt, pyqtSlot, pyqtSignal
+from PyQt5.QtWidgets import QWidget
+from threads import DownloadThread, ThreadStatus
+from utilities import pop_up, resource_path
+from constants import Constants, Messages
+
+
+Ui_Download_window, _ = uic.loadUiType(
+    resource_path("download_db_window.ui")
+)
+
+
+class DownloadWindow(QWidget, Ui_Download_window):
+    """Subclass QWidget and Ui_Download_window. It is the window displayed during the database download."""
+
+    complete = pyqtSignal()
+    closed = pyqtSignal()
+
+    def __init__(self):
+        """Initialize the window."""
+        super().__init__()
+        self.setupUi(self)
+        self.setWindowFlags(
+            # Qt.Window                |
+            Qt.CustomizeWindowHint   |
+            Qt.WindowTitleHint       |
+            Qt.WindowCloseButtonHint |
+            Qt.WindowStaysOnTopHint
+        )
+
+        self._no_internet_msg = pop_up(self, title=Messages.NO_CONNECTION,
+                                       text=Messages.NO_CONNECTION_MSG,
+                                       connection=self.close)
+
+        self._bad_db_download_msg = pop_up(self, title=Messages.BAD_DOWNLOAD,
+                                           text=Messages.BAD_DOWNLOAD_MSG,
+                                           connection=self.close)
+
+        self._slow_conn_msg = pop_up(self, title=Messages.SLOW_CONN,
+                                     text=Messages.SLOW_CONN_MSG,
+                                     connection=self.close)
+
+        self._download_thread = DownloadThread()
+        self._download_thread.finished.connect(self._wait_close)
+        self._download_thread.progress.connect(self._display_progress)
+        self._download_thread.speed_progress.connect(self._display_speed)
+        self.closed.connect(self._download_thread.set_exit)
+        self.cancel_btn.clicked.connect(self._terminate_process)
+
+    def start_download(self):
+        """Start the download thread."""
+        self._download_thread.start()
+
+    def _download_format_str(self, n):
+        """Return a well-formatted string with the downloaded MB."""
+        return f"Downloaded: {n} MB"
+
+    @pyqtSlot(float)
+    def _display_speed(self, speed):
+        """Display the download speed."""
+        ret = "Speed: "
+        if speed == Constants.ZERO_INITIAL_SPEED:
+            ret += "Calculating..."
+        elif speed == 0.0:
+            ret += "VERY SLOW"
+        elif speed == Constants.ZERO_FINAL_SPEED:
+            ret = ""
+        else:
+            ret += f"{speed} MB/s"
+        self.speed_lbl.setText(ret)
+
+    @pyqtSlot(int)
+    def _display_progress(self, progress):
+        """Display the downloaded MB."""
+        if progress != Constants.EXTRACTING_CODE:
+            self.status_lbl.setText(self._download_format_str(progress))
+        elif progress == Constants.EXTRACTING_CODE:
+            self.status_lbl.setText(Constants.EXTRACTING_MSG)
+
+    def show(self):
+        """Extends QWidget.show. Set downloaded MB and speed to zero."""
+        self._display_progress(0)
+        self._display_speed(Constants.ZERO_INITIAL_SPEED)
+        super().show()
+
+    def _stop_thread(self):
+        """Ask the download thread to stop."""
+        if self._download_thread.isRunning():
+            self.closed.emit()
+            self._download_thread.wait()
+
+    @pyqtSlot()
+    def _terminate_process(self):
+        """Terminate the download thread and close."""
+        self._stop_thread()
+        self.close()
+
+    @pyqtSlot()
+    def _wait_close(self):
+        """Decide the action based on the download thread status and close."""
+        if self._download_thread.status is ThreadStatus.OK:
+            self.complete.emit()
+            self.close()
+        elif self._download_thread.status is ThreadStatus.NO_CONNECTION_ERR:
+            self._no_internet_msg.show()
+        elif self._download_thread.status is ThreadStatus.BAD_DOWNLOAD_ERR:
+            self._bad_db_download_msg.show()
+        elif self._download_thread.status is ThreadStatus.SLOW_CONN_ERR:
+            self._slow_conn_msg.show()
+        else:
+            self.close()
+
+    def reject(self):
+        """Extends QWidget.reject. Terminate the download thread."""
+        self._stop_thread()
+        super().reject()

src/fixed_aspect_ratio_label.py

@@ -0,0 +1,38 @@
+from PyQt5.QtWidgets import QLabel
+from PyQt5.QtCore import Qt
+
+
+class FixedAspectRatioLabel(QLabel):
+    """Subclass QLabel. A resizable label class."""
+
+    def __init__(self, parent=None):
+        """Initialize the instance. Set the pixmap to None."""
+        super().__init__(parent)
+        self.pixmap = None
+
+    def set_default_stylesheet(self):
+        """Set the initial stylesheet of the label."""
+        self.setStyleSheet("""border-width: 1px;
+        border-style: solid;
+        border-color: black;""")
+
+    def make_transparent(self):
+        """Make the label transparent.
+
+        Remove text and border."""
+        self.setText('')
+        self.setStyleSheet("border-width: 0px;")
+
+    def apply_pixmap(self):
+        """Apply a scaled pixmap without modifying the dimension of the original one."""
+        if self.pixmap:
+            self.setPixmap(
+                self.pixmap.scaled(
+                    self.size(), Qt.IgnoreAspectRatio, Qt.SmoothTransformation
+                )
+            )
+
+    def rescale(self, size):
+        """Rescale the widget and the displayed pixmap to the given size."""
+        self.resize(size)
+        self.apply_pixmap()

src/fixed_aspect_ratio_widget.py

@@ -0,0 +1,26 @@
+from PyQt5.QtWidgets import QWidget
+from PyQt5.QtCore import QSize
+
+
+class FixedAspectRatioWidget(QWidget):
+    """Subclass QWidget. Keep all the internal labels to a fixed aspect ratio."""
+
+    SPACE = 10
+
+    def __init__(self, parent=None):
+        """Initialize the instance."""
+        super().__init__(parent)
+        self.labels = []
+
+    def resizeEvent(self, event):
+        """Override QWidget.resizeEvent. Rescale all the internal widgets."""
+        h, w = self.height(), self.width()
+        h_lbl = h / 9 - self.SPACE
+        w_lbl = 5 * h_lbl
+        w_pad = w - 10
+        if w_lbl > w_pad:
+            w_lbl = w_pad
+            h_lbl = w_pad / 5
+
+        for label in self.labels:
+            label.rescale(QSize(w_lbl, h_lbl))

src/switchable_label.py

@@ -0,0 +1,158 @@
+from PyQt5.QtWidgets import QLabel
+from constants import ForecastColors
+
+
+class _BaseSwitchableLabel(QLabel):
+    """Subclass QLabel. Base class for the switchable labels."""
+
+    def __init__(self, parent=None):
+        """Set is_on to False and level to 0."""
+        super().__init__(parent)
+        self.is_on = False
+        self.level = 0
+
+    def switch_on(self):
+        """Set is_on to True."""
+        self.is_on = True
+
+    def switch_off(self):
+        """Set is_on to False."""
+        self.is_on = False
+
+
+class SwitchableLabel(_BaseSwitchableLabel):
+    """Subclass _BaseSwitchableLabel."""
+
+    def __init__(self, parent=None):
+        """Define text and colors attributes."""
+        super().__init__(parent)
+        self.switch_on_colors = ()
+        self.switch_off_colors = ()
+        self.text_color = ''
+
+    def switch_on(self):
+        """Extend _BaseSwitchableLabel.switch_on.
+
+        Apply the active state colors."""
+        super().switch_on()
+        self._apply_colors(*self.switch_on_colors)
+
+    def switch_off(self):
+        """Extend _BaseSwitchableLabel.switch_off.
+
+        Apply the inactive state colors."""
+        super().switch_off()
+        self._apply_colors(*self.switch_off_colors)
+
+    def _apply_colors(self, start, end):
+        """Set text and background color of the label."""
+        self.setStyleSheet(
+            f"""
+            color:{self.text_color};
+            background-color: qlineargradient(x1: 0, y1: 0, x2: 1, y2: 0,stop:0 {start} ,stop: 1 {end});
+            """
+        )
+
+
+class SingleColorSwitchableLabel(_BaseSwitchableLabel):
+    """Subclass _BaseSwitchableLabel."""
+
+    THRESHOLD = 30
+
+    def __init__(self, parent=None):
+        """Set default active color."""
+        super().__init__(parent)
+        self.active_color = ForecastColors.WARNING_COLOR
+
+    def switch_on(self):
+        """Extend _BaseSwitchableLabel.switch_on.
+
+        Apply the active state color if level >= THRESHOLD."""
+        if self.level >= self.THRESHOLD:
+            super().switch_on()
+            self.setStyleSheet(f"color: {self.active_color}")
+
+    def switch_off(self):
+        """Extend _BaseSwitchableLabel.switch_off.
+
+        Apply an empty stylesheet."""
+        super().switch_off()
+        self.setStyleSheet("")
+
+
+class MultiColorSwitchableLabel(_BaseSwitchableLabel):
+    """Subclass _BaseSwitchableLabel."""
+
+    LEVEL_COLORS = {
+        9: ForecastColors.KP9_COLOR,
+        8: ForecastColors.KP8_COLOR,
+        7: ForecastColors.KP7_COLOR,
+        6: ForecastColors.KP6_COLOR,
+        5: ForecastColors.KP5_COLOR
+    }
+
+    MIN_LEVEL = list(LEVEL_COLORS.keys())[-1]
+    MAX_LEVEL = list(LEVEL_COLORS.keys())[0]
+
+    def __init__(self, parent=None):
+        """Initialize the instance."""
+        super().__init__(parent)
+
+    def switch_on(self):
+        """Extend _BaseSwitchableLabel.switch_on.
+
+        Apply the active state color based on LEVEL_COLORS."""
+        if self.MIN_LEVEL <= self.level <= self.MAX_LEVEL:
+            super().switch_on()
+            self.setStyleSheet(
+                f"""color: {self.LEVEL_COLORS[self.level]};
+                text-decoration: underline;"""
+            )
+
+    def switch_off(self):
+        """Extend _BaseSwitchableLabel.switch_off.
+
+        Apply an empty stylesheet."""
+        super().switch_off()
+        self.setStyleSheet("")
+
+
+class SwitchableLabelsIterable:
+    """Iterable class of _BaseSwitchableLabel."""
+
+    def __init__(self, *labels):
+        """Set the labels to iterate through."""
+        self.labels = labels
+
+    def __iter__(self):
+        """Define the iterator."""
+        for lab in self.labels:
+            yield lab
+
+    def switch_on(self, label):
+        """Switch on the label 'label'. Switch off all the other labels."""
+        for lab in self.labels:
+            if lab is label:
+                lab.switch_on()
+            else:
+                lab.switch_off()
+
+    def switch_off_all(self):
+        """Switch off all the labels."""
+        for lab in self.labels:
+            lab.switch_off()
+
+    def set(self, attr, value):
+        """Set the attribute 'attr' equal to 'value' for all the labels."""
+        for lab in self.labels:
+            setattr(lab, attr, value)
+
+    def refresh(self):
+        """Refresh the state of all the labels.
+
+        Used after the applied theme has changed."""
+        for lab in self.labels:
+            if lab.is_on:
+                lab.switch_on()
+            else:
+                lab.switch_off()

src/themes/acqua/acqua.qss

@@ -0,0 +1,631 @@
+/*
+Aqua Style Sheet for QT Applications
+Author: Jaime A. Quiroga P.
+Company: GTRONICK
+Last updated: 22/01/2019, 07:55.
+Available at: https://github.com/GTRONICK/QSS/blob/master/Aqua.qss
+*/
+/* QMainWindow {
+	background-color:#ececec;
+} */
+
+QWidget{
+	background-color:#ececec;
+}
+
+QTextEdit {
+}
+
+QPlainTextEdit {
+	border-style: solid;
+	border-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(0, 113, 255, 255), stop:1 rgba(91, 171, 252, 255));
+}
+QToolButton {
+	border-style: solid;
+	border-top-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgb(215, 215, 215), stop:1 rgb(222, 222, 222));
+	border-right-color: qlineargradient(spread:pad, x1:0, y1:0.5, x2:1, y2:0.5, stop:0 rgb(217, 217, 217), stop:1 rgb(227, 227, 227));
+	border-left-color: qlineargradient(spread:pad, x1:0, y1:0.5, x2:1, y2:0.5, stop:0 rgb(227, 227, 227), stop:1 rgb(217, 217, 217));
+	border-bottom-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgb(215, 215, 215), stop:1 rgb(222, 222, 222));
+	border-width: 1px;
+	border-radius: 5px;
+	color: rgb(0,0,0);
+	padding: 2px;
+	background-color: rgb(255,255,255);
+}
+QToolButton:hover{
+	border-style: solid;
+	border-width: 1px;
+	border-radius: 5px;
+	color: rgb(0,0,0);
+	padding: 2px;
+	background-color: rgb(255,255,255);
+}
+QToolButton:pressed{
+	border-style: solid;
+	border-width: 1px;
+	border-radius: 5px;
+	color: rgb(0,0,0);
+	padding: 2px;
+	background-color: rgb(142,142,142);
+}
+QPushButton{
+	border-width: 1px;
+	border-radius: 5px;
+	color: rgb(0,0,0);
+	padding: 2px;
+	border: 1px solid transparent;
+	background-color: transparent;
+}
+
+QPushButton:hover{
+	border-style: solid;
+	border-width: 1px;
+	border-radius: 5px;
+	color: rgb(0,0,0);
+	padding: 2px;
+	border-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(49, 147, 250, 255), stop:1 rgba(34, 142, 255, 255));
+}
+QPushButton:pressed{
+	border-style: solid;
+	border-width: 1px;
+	border-radius: 5px;
+	color: rgb(0,0,0);
+	padding: 2px;
+}
+
+QPushButton:checked{
+	border-style: solid;
+	border-width: 1px;
+	border-radius: 5px;
+	color: #ffffff;
+	padding: 2px;
+	background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(49, 147, 250, 255), stop:1 rgba(34, 142, 255, 255));
+}
+
+QPushButton:disabled{
+	border-style: solid;
+	border-width: 1px;
+	border-radius: 5px;
+	color: #808086;
+	padding: 2px;
+	background-color: transparent;
+}
+QLineEdit {
+	border-width: 1px; border-radius: 4px;
+	border-style: solid;
+	border-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(0, 113, 255, 255), stop:1 rgba(91, 171, 252, 255));
+}
+QLabel {
+	color: #000000;
+}
+QLCDNumber {
+	color: rgb(0, 113, 255, 255);
+}
+QProgressBar {
+	text-align: center;
+	color: rgb(240, 240, 240);
+	border-width: 1px;
+	border-radius: 10px;
+	border-color: rgb(230, 230, 230);
+	border-style: solid;
+	background-color:rgb(207,207,207);
+}
+QProgressBar::chunk {
+	background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(49, 147, 250, 255), stop:1 rgba(34, 142, 255, 255));
+	border-radius: 10px;
+}
+QMenuBar {
+	background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(207, 209, 207, 255), stop:1 rgba(230, 229, 230, 255));
+}
+QMenuBar::item {
+	color: #000000;
+  	spacing: 3px;
+  	padding: 1px 4px;
+	background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(207, 209, 207, 255), stop:1 rgba(230, 229, 230, 255));
+}
+
+QMenuBar::item:selected {
+  	background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(0, 113, 255, 255), stop:1 rgba(91, 171, 252, 255));
+	color: #FFFFFF;
+}
+QMenu::item:selected {
+	border-style: solid;
+	border-top-color: transparent;
+	border-right-color: transparent;
+	border-left-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(0, 113, 255, 255), stop:1 rgba(91, 171, 252, 255));
+	border-bottom-color: transparent;
+	border-left-width: 2px;
+	color: #000000;
+	padding-left:15px;
+	padding-top:4px;
+	padding-bottom:4px;
+	padding-right:7px;
+}
+QMenu::item {
+	border-style: solid;
+	border-top-color: transparent;
+	border-right-color: transparent;
+	border-left-color: transparent;
+	border-bottom-color: transparent;
+	border-bottom-width: 1px;
+	color: #000000;
+	padding-left:17px;
+	padding-top:4px;
+	padding-bottom:4px;
+	padding-right:7px;
+}
+QTabWidget {
+	color:rgb(0,0,0);
+	background-color:#000000;
+}
+
+QTreeView {
+	background-color: transparent;
+    selection-background-color: transparent;
+	border: 0px;
+}
+
+QTreeView::item {
+	background-color: transparent;
+}
+
+QTreeView::item:hover {
+    border-right: 2px solid #4545e5;
+	color: rgba(0, 113, 255, 255)
+}
+
+QTreeView::item:selected {
+	color: rgba(0, 113, 255, 255)
+}
+
+QTreeView::item:active{
+	background: transparent;
+}
+
+QTreeView::item:disabled{
+	color: #808086;
+}
+
+QTreeView::item:selected:disabled{
+	color: #808086;
+}
+
+QListWidget {
+	background-color: transparent;
+	border: 0px solid transparent;
+	border-bottom: 2px solid #80CBC4;
+}
+
+QListView {
+	background-color: transparent;
+	outline: 0;
+	border: 0px solid transparent;
+}
+QListView::item:hover {
+	color: rgba(0, 113, 255, 255);
+	background: transparent;
+}
+
+QListView::item:selected {
+	color: rgba(0, 113, 255, 255);
+	background: transparent;
+}
+
+QListView::item:disabled {
+	color: #808086;
+	background: transparent;
+}
+
+QListView::item:disabled:selected {
+	color: rgba(0, 113, 255, 255);
+	background: transparent;
+}
+
+
+QTabWidget::pane {
+		background-color:rgb(226,226,226);
+		border-style: solid;
+    	border-radius: 6px;
+}
+QTabBar::tab:first {
+	border-style: solid;
+	border-left-width:1px;
+	border-right-width:0px;
+	border-top-width:1px;
+	border-bottom-width:1px;
+	border-top-color: rgb(209,209,209);
+	border-left-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(209, 209, 209, 209), stop:1 rgba(229, 229, 229, 229));
+	border-bottom-color: rgb(229,229,229);
+	border-top-left-radius: 4px;
+	border-bottom-left-radius: 4px;
+	color: #000000;
+	padding: 3px;
+	margin-left:0px;
+	background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(247, 247, 247, 255), stop:1 rgba(255, 255, 255, 255));
+}
+QTabBar::tab:last {
+	border-style: solid;
+	border-width:1px;
+	border-top-color: rgb(209,209,209);
+	border-left-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(209, 209, 209, 209), stop:1 rgba(229, 229, 229, 229));
+	border-right-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(209, 209, 209, 209), stop:1 rgba(229, 229, 229, 229));
+	border-bottom-color: rgb(229,229,229);
+	border-top-right-radius: 4px;
+	border-bottom-right-radius: 4px;
+	color: #000000;
+	padding: 3px;
+	margin-left:0px;
+	background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(247, 247, 247, 255), stop:1 rgba(255, 255, 255, 255));
+}
+QTabBar::tab {
+	border-style: solid;
+	border-top-width:1px;
+	border-bottom-width:1px;
+	border-left-width:1px;
+	border-top-color: rgb(209,209,209);
+	border-left-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(209, 209, 209, 209), stop:1 rgba(229, 229, 229, 229));
+	border-bottom-color: rgb(229,229,229);
+	color: #000000;
+	padding: 3px;
+	margin-left:0px;
+	background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(247, 247, 247, 255), stop:1 rgba(255, 255, 255, 255));
+}
+QTabBar::tab:selected, QTabBar::tab:last:selected, QTabBar::tab:hover {
+  	border-style: solid;
+  	border-left-width:1px;
+	border-right-color: transparent;
+	border-top-color: rgb(209,209,209);
+	border-left-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(209, 209, 209, 209), stop:1 rgba(229, 229, 229, 229));
+	border-bottom-color: rgb(229,229,229);
+	color: #FFFFFF;
+	padding: 3px;
+	margin-left:0px;
+	background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(0, 113, 255, 255), stop:1 rgba(91, 171, 252, 255));
+}
+
+QTabBar::tab:selected, QTabBar::tab:first:selected, QTabBar::tab:hover {
+  	border-style: solid;
+  	border-left-width:1px;
+  	border-bottom-width:1px;
+  	border-top-width:1px;
+	border-right-color: transparent;
+	border-top-color: rgb(209,209,209);
+	border-left-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(209, 209, 209, 209), stop:1 rgba(229, 229, 229, 229));
+	border-bottom-color: rgb(229,229,229);
+	color: #FFFFFF;
+	padding: 3px;
+	margin-left:0px;
+	background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(0, 113, 255, 255), stop:1 rgba(91, 171, 252, 255));
+}
+
+
+QRadioButton {
+	color: 000000;
+	padding: 1px;
+}
+QRadioButton::indicator:checked {
+	height: 10px;
+	width: 10px;
+	border-style:solid;
+	border-radius:5px;
+	border-width: 1px;
+	border-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(0, 113, 255, 255), stop:1 rgba(91, 171, 252, 255));
+	color: #a9b7c6;
+	background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(0, 113, 255, 255), stop:1 rgba(91, 171, 252, 255));
+}
+QRadioButton::indicator:!checked {
+	height: 10px;
+	width: 10px;
+	border-style:solid;
+	border-radius:5px;
+	border-width: 1px;
+	border-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(0, 113, 255, 255), stop:1 rgba(91, 171, 252, 255));
+	color: #a9b7c6;
+	background-color: transparent;
+}
+QStatusBar {
+	color:#027f7f;
+}
+
+QSpinBox {
+	background-color: transparent;
+    border-width: 0px;
+}
+
+QSpinBox:disabled {
+    color: #808086;
+    border-width: 0px;
+}
+
+QSpinBox::up-button {
+    subcontrol-origin: border;
+    subcontrol-position: top right;
+    width: 16px;
+    image: url("./themes/acqua/icons/up-arrow.png");
+    border-width: 0px;
+}
+
+QSpinBox::up-button:hover {
+    image: url("./themes/acqua/icons/up-arrow_hover.png");
+}
+
+QSpinBox::up-button:pressed {
+    image: url("./themes/acqua/icons/up-arrow.png");
+}
+
+QSpinBox::up-button:disabled {
+    image: url("./themes/acqua/icons/up-arrow_off.png");
+}
+
+QSpinBox::down-button {
+    subcontrol-origin: border;
+    subcontrol-position: bottom right;
+    width: 16px;
+    image: url("./themes/acqua/icons/down-arrow.png");
+    border-width: 0px;
+    border-top-width: 0;
+}
+
+QSpinBox::down-button:hover {
+    image: url("./themes/acqua/icons/down-arrow_hover.png");
+}
+
+QSpinBox::down-button:pressed {
+    image: url("./themes/acqua/icons/down-arrow.png");
+}
+
+QSpinBox::down-button:disabled {
+    image: url("./themes/acqua/icons/down-arrow_off.png");
+}
+
+QComboBox {
+    border: 0px solid transparent;
+    border-radius: 2px;
+    padding: 1px 6px 1px 6px;
+    min-width: 2em;
+}
+
+QComboBox:!editable {
+	selection-background-color: transparent;
+    selection-color: #FFFFFF;
+	background-color: transparent;
+}
+
+QComboBox:disabled {
+    color: #808086;
+}
+
+QComboBox:!editable:on, QComboBox::drop-down:editable:on {
+	background-color: transparent;
+	selection-background-color: transparent;
+}
+
+QComboBox:on {
+    padding-top: 3px;
+    padding-left: 4px;
+}
+
+QComboBox::drop-down {
+	background-color: transparent;
+    subcontrol-origin: padding;
+    subcontrol-position: top right;
+    width: 20px;
+    border-top-right-radius: 2px;
+    border-bottom-right-radius: 2px;
+}
+
+QComboBox::down-arrow:enabled {
+    image: url("./themes/acqua/icons/down-arrow.png");
+}
+
+QComboBox::down-arrow:disabled {
+    image: url("./themes/acqua/icons/down-arrow_off.png");
+}
+
+QComboBox::down-arrow:hover {
+    image: url("./themes/acqua/icons/down-arrow_hover.png");
+}
+
+QComboBox::down-arrow:on {
+    top: 1px;
+    left: 1px;
+}
+
+QComboBox QAbstractItemView {
+	background-color: #ececec;
+}
+
+QScrollArea {
+	color: #FFFFFF;
+	background-color:#000000;
+}
+QSlider::groove:horizontal {
+	height: 5px;
+	background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(49, 147, 250, 255), stop:1 rgba(34, 142, 255, 255));
+}
+QSlider::groove:vertical {
+	width: 5px;
+	background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(49, 147, 250, 255), stop:1 rgba(34, 142, 255, 255));
+}
+QSlider::handle:horizontal {
+	background: rgb(253,253,253);
+	border-style: solid;
+	border-width: 1px;
+	border-color: rgb(207,207,207);
+	width: 12px;
+	margin: -5px 0;
+	border-radius: 7px;
+}
+QSlider::handle:vertical {
+	background: rgb(253,253,253);
+	border-style: solid;
+	border-width: 1px;
+	border-color: rgb(207,207,207);
+	height: 12px;
+	margin: 0 -5px;
+	border-radius: 7px;
+}
+QSlider::add-page:horizontal {
+    background: rgb(181,181,181);
+}
+QSlider::add-page:vertical {
+    background: rgb(181,181,181);
+}
+QSlider::sub-page:horizontal {
+    background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(49, 147, 250, 255), stop:1 rgba(34, 142, 255, 255));
+}
+QSlider::sub-page:vertical {
+    background-color: qlineargradient(spread:pad, y1:0.5, x1:1, y2:0.5, x2:0, stop:0 rgba(49, 147, 250, 255), stop:1 rgba(34, 142, 255, 255));
+}
+QScrollBar:horizontal {
+	max-height: 20px;
+	border: 1px transparent grey;
+	margin: 0px 20px 0px 20px;
+}
+QScrollBar:vertical {
+	max-width: 20px;
+	border: 1px transparent grey;
+	margin: 20px 0px 20px 0px;
+}
+QScrollBar::handle:horizontal {
+	background: rgb(253,253,253);
+	border-style: solid;
+	border-width: 1px;
+	border-color: rgb(207,207,207);
+	border-radius: 7px;
+	min-width: 25px;
+}
+QScrollBar::handle:horizontal:hover {
+	background: rgb(253,253,253);
+	border-style: solid;
+	border-width: 1px;
+	border-color: rgb(147, 200, 200);
+	border-radius: 7px;
+	min-width: 25px;
+}
+QScrollBar::handle:vertical {
+	background: rgb(253,253,253);
+	border-style: solid;
+	border-width: 1px;
+	border-color: rgb(207,207,207);
+	border-radius: 7px;
+	min-height: 25px;
+}
+QScrollBar::handle:vertical:hover {
+	background: rgb(253,253,253);
+	border-style: solid;
+	border-width: 1px;
+	border-color: rgb(147, 200, 200);
+	border-radius: 7px;
+	min-height: 25px;
+}
+QScrollBar::add-line:horizontal {
+   border: 2px transparent grey;
+   border-top-right-radius: 7px;
+   border-bottom-right-radius: 7px;
+   background: rgba(34, 142, 255, 255);
+   width: 20px;
+   subcontrol-position: right;
+   subcontrol-origin: margin;
+}
+QScrollBar::add-line:horizontal:pressed {
+   border: 2px transparent grey;
+   border-top-right-radius: 7px;
+   border-bottom-right-radius: 7px;
+   background: rgb(181,181,181);
+   width: 20px;
+   subcontrol-position: right;
+   subcontrol-origin: margin;
+}
+QScrollBar::add-line:vertical {
+   border: 2px transparent grey;
+   border-bottom-left-radius: 7px;
+   border-bottom-right-radius: 7px;
+   background: rgba(34, 142, 255, 255);
+   height: 20px;
+   subcontrol-position: bottom;
+   subcontrol-origin: margin;
+}
+QScrollBar::add-line:vertical:pressed {
+   border: 2px transparent grey;
+   border-bottom-left-radius: 7px;
+   border-bottom-right-radius: 7px;
+   background: rgb(181,181,181);
+   height: 20px;
+   subcontrol-position: bottom;
+   subcontrol-origin: margin;
+}
+QScrollBar::sub-line:horizontal {
+   border: 2px transparent grey;
+   border-top-left-radius: 7px;
+   border-bottom-left-radius: 7px;
+   background: rgba(34, 142, 255, 255);
+   width: 20px;
+   subcontrol-position: left;
+   subcontrol-origin: margin;
+}
+QScrollBar::sub-line:horizontal:pressed {
+   border: 2px transparent grey;
+   border-top-left-radius: 7px;
+   border-bottom-left-radius: 7px;
+   background: rgb(181,181,181);
+   width: 20px;
+   subcontrol-position: left;
+   subcontrol-origin: margin;
+}
+QScrollBar::sub-line:vertical {
+   border: 2px transparent grey;
+   border-top-left-radius: 7px;
+   border-top-right-radius: 7px;
+   background: rgba(34, 142, 255, 255);
+   height: 20px;
+   subcontrol-position: top;
+   subcontrol-origin: margin;
+}
+QScrollBar::sub-line:vertical:pressed {
+   border: 2px transparent grey;
+   border-top-left-radius: 7px;
+   border-top-right-radius: 7px;
+   background: rgb(181,181,181);
+   height: 20px;
+   subcontrol-position: top;
+   subcontrol-origin: margin;
+}
+QScrollBar::left-arrow:horizontal {
+   border: 1px transparent grey;
+   border-top-left-radius: 3px;
+   border-bottom-left-radius: 3px;
+   width: 6px;
+   height: 6px;
+   background: white;
+}
+QScrollBar::right-arrow:horizontal {
+   border: 1px transparent grey;
+   border-top-right-radius: 3px;
+   border-bottom-right-radius: 3px;
+   width: 6px;
+   height: 6px;
+   background: white;
+}
+QScrollBar::up-arrow:vertical {
+   border: 1px transparent grey;
+   border-top-left-radius: 3px;
+   border-top-right-radius: 3px;
+   width: 6px;
+   height: 6px;
+   background: white;
+}
+QScrollBar::down-arrow:vertical {
+   border: 1px transparent grey;
+   border-bottom-left-radius: 3px;
+   border-bottom-right-radius: 3px;
+   width: 6px;
+   height: 6px;
+   background: white;
+}
+QScrollBar::add-page:horizontal, QScrollBar::sub-page:horizontal {
+   background: none;
+}
+QScrollBar::add-page:vertical, QScrollBar::sub-page:vertical {
+   background: none;
+}

src/themes/acqua/colors.txt

@@ -0,0 +1,5 @@
+active=#228eff
+inactive=#808086
+off=#3a7bd5, #3a6073
+on=#00d2ff, #928dab
+text=#ffffff

src/themes/console_style/colors.txt

@@ -0,0 +1,5 @@
+active= #ff9900
+inactive= #616161
+on=#fc4a1a, #f7b733
+off= #000000, #434343
+text=#ffffff

src/themes/console_style/console_style.qss

@@ -0,0 +1,413 @@
+/*
+Dark Console Style Sheet for QT Applications
+Author: Jaime A. Quiroga P.
+Company: GTRONICK
+Last updated: 24/05/2018, 17:12.
+Available at: https://github.com/GTRONICK/QSS/blob/master/ConsoleStyle.qss
+*/
+QWidget {
+	background-color:rgb(0, 0, 0);
+	color: rgb(240, 240, 240);
+	border-color: rgb(58, 58, 58);
+}
+
+QPlainTextEdit {
+	background-color:rgb(0, 0, 0);
+	color: rgb(200, 200, 200);
+	selection-background-color: rgb(255, 153, 0);
+	selection-color: rgb(0, 0, 0);
+}
+
+QFrame[frameShape="4"],
+QFrame[frameShape="5"]
+{
+    border: none;
+    background: #FFFFFF;
+	max-width: 1px;
+}
+
+QSlider::sub-page:horizontal {
+    background-color: #ff9900;
+}
+QSlider::sub-page:vertical {
+    background-color: #ff9900;
+}
+
+QComboBox {
+    border: 0px solid transparent;
+    border-radius: 2px;
+    padding: 1px 6px 1px 6px;
+    min-width: 2em;
+}
+
+QComboBox:!editable {
+	selection-background-color: transparent;
+    selection-color: #FFFFFF;
+	background-color: transparent;
+}
+
+QComboBox:disabled {
+    color: #616161;
+}
+
+QComboBox:!editable:on, QComboBox::drop-down:editable:on {
+	color: #ffffff;
+	background-color: transparent;
+	selection-background-color: transparent;
+}
+
+QComboBox:on {
+    padding-top: 3px;
+    padding-left: 4px;
+}
+
+QComboBox::drop-down {
+	background-color: transparent;
+    subcontrol-origin: padding;
+    subcontrol-position: top right;
+    width: 20px;
+    border-top-right-radius: 2px;
+    border-bottom-right-radius: 2px;
+}
+
+QComboBox::down-arrow:enabled {
+    image: url("./themes/console_style/icons/down-arrow.png");
+}
+
+QComboBox::down-arrow:disabled {
+    image: url("./themes/console_style/icons/down-arrow_off.png");
+}
+
+QComboBox::down-arrow:hover {
+    image: url("./themes/console_style/icons/down-arrow_hover.png");
+}
+
+QComboBox::down-arrow:on {
+    top: 1px;
+    left: 1px;
+}
+
+QComboBox QAbstractItemView {
+background-color: #232629;
+}
+
+QListWidget {
+	background-color: transparent;
+	border: 0px solid transparent;
+	border-bottom: 2px solid #ff9900;
+	color: #ffffff;
+}
+
+QListView {
+	background-color: transparent;
+	color: #ffffff;
+	outline: 0;
+	border: 0px solid transparent;
+}
+QListView::item:hover {
+	color: rgb(200, 200, 200);
+	background: transparent;
+}
+
+QListView::item:selected {
+	color: #ff9900;
+	background: transparent;
+}
+
+QListView::item:disabled {
+	color: #616161;
+	background: transparent;
+}
+
+QListView::item:disabled:selected {
+	color: #ff9900;
+	background: transparent;
+}
+
+QScrollBar:horizontal {
+	background: transparent;
+	height: 10px;
+	margin: 0;
+}
+
+QScrollBar:vertical {
+	background: transparent;
+	width: 10px;
+	margin: 0;
+}
+
+QScrollBar::handle:horizontal {
+    background: #616161;
+    min-width: 16px;
+	border-radius: 5px;
+}
+
+QScrollBar::handle:vertical {
+    background: #616161;
+    min-height: 16px;
+	border-radius: 5px;
+}
+
+QScrollBar::add-page:horizontal, QScrollBar::sub-page:horizontal,
+QScrollBar::add-page:vertical, QScrollBar::sub-page:vertical {
+	background: none;
+}
+
+QScrollBar::add-line:horizontal, QScrollBar::sub-line:horizontal,
+QScrollBar::add-line:vertical, QScrollBar::sub-line:vertical {
+      border: none;
+      background: none;
+}
+
+QLineEdit {
+    border-style: outset;
+    border-radius: 10px;
+	border-width: 1px;
+	border-color: #ff9900;
+	background-color: transparent;
+	color: #ffffff;
+}
+
+QTreeView {
+	background-color: transparent;
+    selection-background-color: transparent;
+	border: 0px;
+}
+
+QTreeView::item {
+	background-color: transparent;
+	color: #ffffff;
+}
+
+QTreeView::item:hover {
+    border-right: 2px solid #ff9900;
+	color: rgb(200, 200, 200);
+}
+
+QTreeView::item:selected {
+	color: #ff9900;
+}
+
+QTreeView::item:active{
+	background: transparent;
+}
+
+QTreeView::item:disabled{
+	color: rgb(200, 200, 200);
+}
+
+QTreeView::item:selected:disabled{
+	color: #ff9900;
+}
+
+QTabWidget::pane {
+    border-top: 1px solid #000000;
+}
+
+QSpinBox {
+	background-color: transparent;
+    color: #ffffff;
+    border-width: 0px;
+}
+
+QSpinBox:disabled {
+    color: #616161;
+    border-width: 0px;
+}
+
+QSpinBox::up-button {
+    subcontrol-origin: border;
+    subcontrol-position: top right;
+    width: 16px;
+    image: url("./themes/console_style/icons/up-arrow.png");
+    border-width: 0px;
+}
+
+QSpinBox::up-button:hover {
+    image: url("./themes/console_style/icons/up-arrow_hover.png");
+}
+
+QSpinBox::up-button:pressed {
+    image: url("./themes/console_style/icons/up-arrow.png");
+}
+
+QSpinBox::up-button:disabled {
+    image: url("./themes/console_style/icons/up-arrow_off.png");
+}
+
+QSpinBox::down-button {
+    subcontrol-origin: border;
+    subcontrol-position: bottom right;
+    width: 16px;
+    image: url("./themes/console_style/icons/down-arrow.png");
+    border-width: 0px;
+    border-top-width: 0;
+}
+
+QSpinBox::down-button:hover {
+    image: url("./themes/console_style/icons/down-arrow_hover.png");
+}
+
+QSpinBox::down-button:pressed {
+    image: url("./themes/console_style/icons/down-arrow.png");
+}
+
+QSpinBox::down-button:disabled {
+    image: url("./themes/console_style/icons/down-arrow_off.png");
+}
+
+QTabBar::tab {
+ 	background-color:rgb(0, 0, 0);
+ 	border-style: outset;
+	border-width: 1px;
+	border-right-color: qlineargradient(spread:pad, x1:0.4, y1:0.5, x2:0.6, y2:0.5, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(62, 62, 62, 255));
+	border-left-color: qlineargradient(spread:pad, x1:0.6, y1:0.5, x2:0.4, y2:0.5, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(62, 62, 62, 255));
+  border-bottom-color: rgb(58, 58, 58);
+	border-bottom-width: 1px;
+	border-top-width: 0px;
+	border-style: solid;
+	color: rgb(255, 153, 0);
+	padding: 4px;
+}
+
+QTabBar::tab:selected, QTabBar::tab:hover {
+   color: rgb(255, 255, 255);
+   background-color:rgb(0, 0, 0);
+   border-color:rgb(42, 42, 42);
+   margin-left: 0px;
+   margin-right: 0px;
+   border-bottom-right-radius:4px;
+   border-bottom-left-radius:4px;
+}
+
+QTabBar::tab:last:selected {
+  background-color:rgb(0, 0, 0);
+	border-color:rgb(42, 42, 42);
+	margin-left: 0px;
+  	margin-right: 0px;
+	border-bottom-right-radius:4px;
+	border-bottom-left-radius:4px;
+}
+
+QTabBar::tab:!selected {
+   margin-bottom: 4px;
+   border-bottom-right-radius:4px;
+   border-bottom-left-radius:4px;
+}
+
+QPushButton{
+	/* border-style: outset;
+	border-width: 2px; */
+	/* border-top-color: qlineargradient(spread:pad, x1:0.5, y1:0.6, x2:0.5, y2:0.4, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(62, 62, 62, 255));
+	border-right-color: qlineargradient(spread:pad, x1:0.4, y1:0.5, x2:0.6, y2:0.5, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(62, 62, 62, 255));
+	border-left-color: qlineargradient(spread:pad, x1:0.6, y1:0.5, x2:0.4, y2:0.5, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(62, 62, 62, 255));
+	border-bottom-color: rgb(58, 58, 58);
+	border-bottom-width: 1px;
+	border-style: solid; */
+	color: rgb(255, 255, 255);
+	padding: 6px;
+	/* background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(77, 77, 77, 255), stop:1 rgba(97, 97, 97, 255)); */
+	background-color: transparent;
+}
+
+QPushButton:hover{
+	/* border-style: outset;
+	border-width: 2px;
+	border-top-color: qlineargradient(spread:pad, x1:0.5, y1:0.6, x2:0.5, y2:0.4, stop:0 rgba(180, 180, 180, 255), stop:1 rgba(110, 110, 110, 255));
+	border-right-color: qlineargradient(spread:pad, x1:0.4, y1:0.5, x2:0.6, y2:0.5, stop:0 rgba(180, 180, 180, 255), stop:1 rgba(110, 110, 110, 255));
+	border-left-color: qlineargradient(spread:pad, x1:0.6, y1:0.5, x2:0.4, y2:0.5, stop:0 rgba(180, 180, 180, 255), stop:1 rgba(110, 110, 110, 255));
+	border-bottom-color: rgb(115, 115, 115);
+	border-bottom-width: 1px;
+	border-style: solid; */
+	color: rgb(200, 200, 200);
+	padding: 6px;
+	/* background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(107, 107, 107, 255), stop:1 rgba(157, 157, 157, 255)); */
+	background-color: transparent;
+}
+
+QPushButton:pressed{
+	/* border-style: outset;
+	border-width: 2px;
+	border-top-color: qlineargradient(spread:pad, x1:0.5, y1:0.6, x2:0.5, y2:0.4, stop:0 rgba(62, 62, 62, 255), stop:1 rgba(22, 22, 22, 255));
+	border-right-color: qlineargradient(spread:pad, x1:0.4, y1:0.5, x2:0.6, y2:0.5, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(62, 62, 62, 255));
+	border-left-color: qlineargradient(spread:pad, x1:0.6, y1:0.5, x2:0.4, y2:0.5, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(62, 62, 62, 255));
+	border-bottom-color: rgb(58, 58, 58);
+	border-bottom-width: 1px;
+	border-style: solid; */
+	color: rgb(255, 255, 255);
+	padding: 6px;
+	/* background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(77, 77, 77, 255), stop:1 rgba(97, 97, 97, 255)); */
+	background-color: transparent;
+}
+
+QPushButton:disabled{
+	/* border-style: outset;
+	border-width: 2px;
+	border-top-color: qlineargradient(spread:pad, x1:0.5, y1:0.6, x2:0.5, y2:0.4, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(62, 62, 62, 255));
+	border-right-color: qlineargradient(spread:pad, x1:0.4, y1:0.5, x2:0.6, y2:0.5, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(62, 62, 62, 255));
+	border-left-color: qlineargradient(spread:pad, x1:0.6, y1:0.5, x2:0.4, y2:0.5, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(62, 62, 62, 255));
+	border-bottom-color: rgb(58, 58, 58);
+	border-bottom-width: 1px;
+	border-style: solid; */
+	color: #616161;
+	padding: 6px;
+	/* background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(57, 57, 57, 255), stop:1 rgba(77, 77, 77, 255)); */
+	background-color: transparent;
+}
+
+QPushButton:checked {
+	color: #ff9900;
+}
+
+QProgressBar {
+	text-align: center;
+	color: rgb(255, 255, 255);
+	background-color: #616161;
+	border-width: 1px;
+	border-radius: 10px;
+	border-color: #616161;
+	border-style: inset;
+}
+
+QProgressBar::chunk {
+	background-color: #ff9900;
+	border-radius: 10px;
+}
+
+QMenuBar {
+	background:rgb(0, 0, 0);
+	color: rgb(255, 153, 0);
+}
+
+QMenuBar::item {
+  	spacing: 3px;
+	padding: 1px 4px;
+  	background: transparent;
+}
+
+QMenuBar::item:selected {
+  	background:rgb(115, 115, 115);
+}
+
+QMenu {
+	border-width: 2px;
+	border-radius: 10px;
+	border-color: rgb(255, 153, 0);
+	border-style: outset;
+}
+
+QMenu::item {
+	spacing: 3px;
+	padding: 3px 15px;
+}
+
+QMenu::item:selected {
+	spacing: 3px;
+	padding: 3px 15px;
+	background:rgb(115, 115, 115);
+	color:rgb(255, 255, 255);
+	border-width: 1px;
+	border-radius: 10px;
+	border-color: rgb(58, 58, 58);
+	border-style: inset;
+}

src/themes/dark/colors.txt

@@ -0,0 +1,5 @@
+active=#4545e5
+inactive=#546E7A
+off=#283048,#859398
+on=#4776e6, #8e54e9
+text=#ffffff

src/themes/dark/dark.qss

@@ -0,0 +1,470 @@
+/*************************************
+Main Window and Splitters
+**************************************/
+QWidget:window {
+	background-color: #232629;
+}
+
+QSplitter::handle {
+    background-color: transparent;
+}
+
+/*************************************
+Main menu (Bar)
+**************************************/
+QMenuBar {
+	background-color: transparent;
+	color: #AFBDC4;
+}
+
+QMenuBar::item {
+	background-color: transparent;
+}
+
+QMenuBar::item:disabled {
+	color: gray;
+}
+
+QMenuBar::item:selected {
+	color: #FFFFFF;
+	border-bottom: 2px solid #4545e5;
+}
+
+QMenuBar::item:pressed {
+	color: #FFFFFF;
+	border-bottom: 2px solid #4545e5;
+}
+
+QToolBar {
+	background-color: transparent;
+	border: 1px solid transparent;
+}
+
+QToolBar:handle {
+	background-color: transparent;
+	border-left: 2px dotted #80CBC4;
+	color: transparent;
+}
+
+QToolBar::separator {
+	border: 0;
+}
+
+QMenu {
+	background-color: #263238;
+	color: #AFBDC4;
+}
+
+QMenu::item:selected {
+	color: #FFFFFF;
+}
+
+QMenu::item:pressed {
+	color: #FFFFFF;
+}
+
+QMenu::separator {
+	background-color: transparent;
+	height: 1px;
+	margin-left: 10px;
+	margin-right: 10px;
+	margin-top: 5px;
+	margin-bottom: 5px;
+}
+
+/*************************************
+TabBar
+**************************************/
+QTabBar {
+	background: transparent;
+}
+
+QTabWidget::pane {
+	border: 0px solid transparent;
+	background: transparent;
+}
+
+QTabBar::tab {
+	background-color: transparent;
+	border: 0px solid transparent;
+    border-radius: 10px;
+	color: #AFBDC4;
+	padding-left: 10px;
+	padding-right: 10px;
+	padding-top: 3px;
+	padding-bottom: 3px;
+}
+
+QTabBar::tab:hover {
+	background: #4545e5;
+	color: #FFFFFF;
+}
+
+QTabBar::tab:selected {
+	background: #4545e5;
+	color: #FFFFFF;
+}
+
+QStackedWidget {
+	background: #232629;
+}
+
+QSlider::sub-page:horizontal {
+    background-color: #4545e5;
+}
+QSlider::sub-page:vertical {
+    background-color: #4545e5;
+}
+
+/*************************************
+Progressbar
+**************************************/
+QProgressBar
+{
+    border: 2px solid grey;
+    border-radius: 5px;
+    text-align: center;
+}
+
+QProgressBar::chunk
+{
+    background-color: #88cc00;
+    width: 2.15px;
+    margin: 0.5px;
+}
+
+/*************************************
+Labels and Rich Text boxes
+**************************************/
+QLabel {
+	background-color: transparent;
+	color: #CFD8DC;
+}
+
+QDialog {
+	background-color: transparent;
+	color: #949a9c;
+}
+
+QTextBrowser {
+	background-color: transparent;
+	color: #949a9c;
+}
+
+/*************************************
+Search Bar
+**************************************/
+QLineEdit {
+    border: 2px solid #4545e5 ;
+    border-radius: 10px;
+	background-color: transparent;
+	color: #CFD8DC;
+}
+
+QLineEdit:hover {
+	border-width: 1px;
+    border-radius: 10px;
+	border-style: solid;
+	border-color: #4545e5 ;
+}
+
+QLineEdit:focus {
+	border-width: 1px;
+    border-radius: 10px;
+	border-style: solid;
+	border-color: #4545e5 ;
+}
+
+/*************************************
+Scroll bars
+**************************************/
+QScrollBar:horizontal {
+	background: transparent;
+	height: 10px;
+	margin: 0;
+}
+
+QScrollBar:vertical {
+	background: transparent;
+	width: 10px;
+	margin: 0;
+}
+
+QScrollBar::handle:horizontal {
+    background: #374146;
+    min-width: 16px;
+	border-radius: 5px;
+}
+
+QScrollBar::handle:vertical {
+    background: #374146;
+    min-height: 16px;
+	border-radius: 5px;
+}
+
+QScrollBar::add-page:horizontal, QScrollBar::sub-page:horizontal,
+QScrollBar::add-page:vertical, QScrollBar::sub-page:vertical {
+	background: none;
+}
+
+QScrollBar::add-line:horizontal, QScrollBar::sub-line:horizontal,
+QScrollBar::add-line:vertical, QScrollBar::sub-line:vertical {
+      border: none;
+      background: none;
+}
+
+/*************************************
+List
+**************************************/
+QListWidget {
+	background-color: transparent;
+	border: 0px solid transparent;
+	border-bottom: 2px solid #80CBC4;
+	color: #AFBDC4;
+}
+
+QListView {
+	background-color: transparent;
+	color: #AFBDC4;
+	outline: 0;
+	border: 0px solid transparent;
+}
+QListView::item:hover {
+	color: #FFFFFF;
+	background: transparent;
+}
+
+QListView::item:selected {
+	color: #4545e5;
+	background: transparent;
+}
+
+QListView::item:disabled {
+	color: #546E7A;
+	background: transparent;
+}
+
+QListView::item:disabled:selected {
+	color: #88cc00;
+	background: transparent;
+}
+
+/*************************************
+Buttons
+**************************************/
+QPushButton {
+	background-color: transparent;
+	color: #AFBDC4;
+	border: 1px solid transparent;
+	padding: 4px 22px;
+}
+
+QPushButton:hover {
+	border: 2px dashed #4545e5;
+    border-radius: 13px;
+	color: #FFFFFF;
+}
+
+QPushButton:pressed {
+	color: #FFFFFF;
+}
+
+QPushButton:disabled {
+	color:#546E7A;
+}
+
+QPushButton:checked {
+	color: #4545e5;
+}
+
+/*************************************
+ComboBox
+**************************************/
+QComboBox {
+    border: 0px solid transparent;
+    border-radius: 2px;
+    padding: 1px 6px 1px 6px;
+    min-width: 2em;
+}
+
+QComboBox:!editable {
+	selection-background-color: transparent;
+    color: #AFBDC4;
+    selection-color: #FFFFFF;
+	background-color: transparent;
+}
+
+QComboBox:disabled {
+    color: #546E7A;
+}
+
+QComboBox:!editable:on, QComboBox::drop-down:editable:on {
+	color: #AFBDC4;
+	background-color: transparent;
+	selection-background-color: transparent;
+}
+
+QComboBox:on {
+    padding-top: 3px;
+    padding-left: 4px;
+}
+
+QComboBox::drop-down {
+	background-color: transparent;
+    subcontrol-origin: padding;
+    subcontrol-position: top right;
+    width: 20px;
+    border-top-right-radius: 2px;
+    border-bottom-right-radius: 2px;
+}
+
+QComboBox::down-arrow:enabled {
+    image: url("./themes/dark/icons/down-arrow.png");
+}
+
+QComboBox::down-arrow:disabled {
+    image: url("./themes/dark/icons/down-arrow_off.png");
+}
+
+QComboBox::down-arrow:hover {
+    image: url("./themes/dark/icons/down-arrow_hover.png");
+}
+
+QComboBox::down-arrow:on {
+    top: 1px;
+    left: 1px;
+}
+
+QComboBox QAbstractItemView {
+background-color: #232629;
+}
+
+/*************************************
+RadioButton
+**************************************/
+QRadioButton{
+    color: #AFBDC4;
+}
+
+QRadioButton:disabled{
+    color: #546E7A;
+}
+
+QRadioButton::indicator{
+    width: 50px;
+    height: 50px;
+}
+
+QRadioButton::indicator::unchecked {
+    image: url("./themes/dark/icons/off.png");
+}
+
+QRadioButton::indicator:unchecked:hover {
+    image: url("./themes/dark/icons/off_press.png");
+}
+
+QRadioButton::indicator:unchecked:pressed {
+    image: url("./themes/dark/icons/off_press.png");
+}
+
+QRadioButton::indicator::checked {
+    image: url("./themes/dark/icons/on.png");
+}
+
+QRadioButton::indicator:checked:hover {
+    image: url("./themes/dark/icons/on_press.png");
+}
+
+QRadioButton::indicator:checked:pressed {
+    image: url("./themes/dark/icons/on_press.png");
+}
+
+/*************************************
+SpinBox
+**************************************/
+QSpinBox {
+	background-color: transparent;
+    color: #AFBDC4;
+    border-width: 0px;
+}
+
+QSpinBox:disabled {
+    color: #546E7A;
+    border-width: 0px;
+}
+
+QSpinBox::up-button {
+    subcontrol-origin: border;
+    subcontrol-position: top right;
+    width: 16px;
+    image: url("./themes/dark/icons/up-arrow.png");
+    border-width: 0px;
+}
+
+QSpinBox::up-button:hover {
+    image: url("./themes/dark/icons/up-arrow_hover.png");
+}
+
+QSpinBox::up-button:pressed {
+    image: url("./themes/dark/icons/up-arrow.png");
+}
+
+QSpinBox::up-button:disabled {
+    image: url("./themes/dark/icons/up-arrow_off.png");
+}
+
+QSpinBox::down-button {
+    subcontrol-origin: border;
+    subcontrol-position: bottom right;
+    width: 16px;
+    image: url("./themes/dark/icons/down-arrow.png");
+    border-width: 0px;
+    border-top-width: 0;
+}
+
+QSpinBox::down-button:hover {
+    image: url("./themes/dark/icons/down-arrow_hover.png");
+}
+
+QSpinBox::down-button:pressed {
+    image: url("./themes/dark/icons/down-arrow.png");
+}
+
+QSpinBox::down-button:disabled {
+    image: url("./themes/dark/icons/down-arrow_off.png");
+}
+
+/*************************************
+TreeViewMenu (Mode)
+**************************************/
+QTreeView {
+	background-color: transparent;
+    selection-background-color: transparent;
+	border: 0px;
+}
+
+QTreeView::item {
+	background-color: transparent;
+	color: #AFBDC4;
+}
+
+QTreeView::item:hover {
+    border-right: 2px solid #4545e5;
+	color: #FFFFFF;
+}
+
+QTreeView::item:selected {
+	color: #4545e5;
+}
+
+QTreeView::item:active{
+	background: transparent;
+}
+
+QTreeView::item:disabled{
+	color: #546E7A;
+}
+
+QTreeView::item:selected:disabled{
+	color: #4545e5;
+}

src/themes/elegant_dark/colors.txt

@@ -0,0 +1,5 @@
+active= #00ff00
+inactive= #9f9f9f
+on=#fdfc47, #24fe41
+off=#f2f2f2,#eaeaea
+text=#000000

src/themes/elegant_dark/elegant_dark.qss

@@ -0,0 +1,407 @@
+/*
+ElegantDark Style Sheet for QT Applications
+Author: Jaime A. Quiroga P.
+Company: GTRONICK
+Last updated: 17/04/2018
+Available at: https://github.com/GTRONICK/QSS/blob/master/ElegantDark.qss
+*/
+QMainWindow {
+	background-color:rgb(82, 82, 82);
+}
+
+QWidget{
+	background-color: rgb(82, 82, 82)
+}
+
+QTextEdit {
+	background-color:rgb(42, 42, 42);
+	color: rgb(0, 255, 0);
+}
+
+QSplitter::handle {
+    background-color: transparent;
+}
+
+QSlider::sub-page:horizontal {
+    background-color: #00ff00;
+}
+QSlider::sub-page:vertical {
+    background-color: #00ff00;
+}
+
+QTreeView {
+	background-color: transparent;
+    selection-background-color: transparent;
+	border: 0px;
+	color: #AFBDC4;
+}
+
+QTreeView::item {
+	background-color: transparent;
+}
+
+QTreeView::item:hover {
+	color: #FFFFFF;
+}
+
+QTreeView::item:selected {
+	color: #00ff00;
+}
+
+QTreeView::item:active{
+	background: transparent;
+}
+
+QTreeView::item:disabled{
+	color: #000000;
+}
+
+QTreeView::item:selected:disabled{
+	color: #00ff00;
+}
+
+QSpinBox {
+	background-color: transparent;
+    color: #AFBDC4;
+    border-width: 0px;
+}
+
+QSpinBox:disabled {
+    color: #000000;
+    border-width: 0px;
+}
+
+QSpinBox::up-button {
+    subcontrol-origin: border;
+    subcontrol-position: top right;
+    width: 16px;
+    image: url("./themes/elegant_dark/icons/up-arrow.png");
+    border-width: 0px;
+}
+
+QSpinBox::up-button:hover {
+    image: url("./themes/elegant_dark/icons/up-arrow_hover.png");
+}
+
+QSpinBox::up-button:pressed {
+    image: url("./themes/elegant_dark/icons/up-arrow.png");
+}
+
+QSpinBox::up-button:disabled {
+    image: url("./themes/elegant_dark/icons/up-arrow_off.png");
+}
+
+QSpinBox::down-button {
+    subcontrol-origin: border;
+    subcontrol-position: bottom right;
+    width: 16px;
+    image: url("./themes/elegant_dark/icons/down-arrow.png");
+    border-width: 0px;
+    border-top-width: 0;
+}
+
+QSpinBox::down-button:hover {
+    image: url("./themes/elegant_dark/icons/down-arrow_hover.png");
+}
+
+QSpinBox::down-button:pressed {
+    image: url("./themes/elegant_dark/icons/down-arrow.png");
+}
+
+QSpinBox::down-button:disabled {
+    image: url("./themes/elegant_dark/icons/down-arrow_off.png");
+}
+
+QPushButton{
+	border-style: outset;
+	border-width: 2px;
+	border-top-color: qlineargradient(spread:pad, x1:0.5, y1:0.6, x2:0.5, y2:0.4, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(62, 62, 62, 255));
+	border-right-color: qlineargradient(spread:pad, x1:0.4, y1:0.5, x2:0.6, y2:0.5, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(62, 62, 62, 255));
+	border-left-color: qlineargradient(spread:pad, x1:0.6, y1:0.5, x2:0.4, y2:0.5, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(62, 62, 62, 255));
+	border-bottom-color: rgb(58, 58, 58);
+	border-bottom-width: 1px;
+	border-style: solid;
+	color: rgb(255, 255, 255);
+	padding: 2px;
+	background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(77, 77, 77, 255), stop:1 rgba(97, 97, 97, 255));
+}
+QPushButton:hover{
+	border-style: outset;
+	border-width: 2px;
+	border-top-color: qlineargradient(spread:pad, x1:0.5, y1:0.6, x2:0.5, y2:0.4, stop:0 rgba(180, 180, 180, 255), stop:1 rgba(110, 110, 110, 255));
+	border-right-color: qlineargradient(spread:pad, x1:0.4, y1:0.5, x2:0.6, y2:0.5, stop:0 rgba(180, 180, 180, 255), stop:1 rgba(110, 110, 110, 255));
+	border-left-color: qlineargradient(spread:pad, x1:0.6, y1:0.5, x2:0.4, y2:0.5, stop:0 rgba(180, 180, 180, 255), stop:1 rgba(110, 110, 110, 255));
+	border-bottom-color: rgb(115, 115, 115);
+	border-bottom-width: 1px;
+	border-style: solid;
+	color: rgb(255, 255, 255);
+	padding: 2px;
+	background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(107, 107, 107, 255), stop:1 rgba(157, 157, 157, 255));
+}
+QPushButton:pressed{
+	border-style: outset;
+	border-width: 2px;
+	border-top-color: qlineargradient(spread:pad, x1:0.5, y1:0.6, x2:0.5, y2:0.4, stop:0 rgba(62, 62, 62, 255), stop:1 rgba(22, 22, 22, 255));
+	border-right-color: qlineargradient(spread:pad, x1:0.4, y1:0.5, x2:0.6, y2:0.5, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(62, 62, 62, 255));
+	border-left-color: qlineargradient(spread:pad, x1:0.6, y1:0.5, x2:0.4, y2:0.5, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(62, 62, 62, 255));
+	border-bottom-color: rgb(58, 58, 58);
+	border-bottom-width: 1px;
+	border-style: solid;
+	color: rgb(255, 255, 255);
+	padding: 2px;
+	background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(77, 77, 77, 255), stop:1 rgba(97, 97, 97, 255));
+}
+QPushButton:disabled{
+	border-style: outset;
+	border-width: 2px;
+	border-top-color: qlineargradient(spread:pad, x1:0.5, y1:0.6, x2:0.5, y2:0.4, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(62, 62, 62, 255));
+	border-right-color: qlineargradient(spread:pad, x1:0.4, y1:0.5, x2:0.6, y2:0.5, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(62, 62, 62, 255));
+	border-left-color: qlineargradient(spread:pad, x1:0.6, y1:0.5, x2:0.4, y2:0.5, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(62, 62, 62, 255));
+	border-bottom-color: rgb(58, 58, 58);
+	border-bottom-width: 1px;
+	border-style: solid;
+	color: rgb(0, 0, 0);
+	padding: 2px;
+	background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(57, 57, 57, 255), stop:1 rgba(77, 77, 77, 255));
+}
+QPushButton:checked {
+	color: #00ff00;
+}
+
+QLineEdit{
+	border-width: 1px; border-radius: 4px;
+	border-color: rgb(58, 58, 58);
+	border-style: inset;
+	padding: 0 8px;
+	color: rgb(255, 255, 255);
+	background:rgb(100, 100, 100);
+	selection-background-color: rgb(187, 187, 187);
+	selection-color: rgb(60, 63, 65);
+}
+
+QLabel{
+	color:rgb(255,255,255);
+}
+
+QRadioButton{
+    color: #FFFFFF;
+}
+
+QComboBox {
+    border: 0px solid transparent;
+    border-radius: 2px;
+    padding: 1px 6px 1px 6px;
+    min-width: 2em;
+}
+
+QComboBox:!editable {
+	selection-background-color: transparent;
+    color: #AFBDC4;
+    selection-color: #FFFFFF;
+	background-color: transparent;
+}
+
+QComboBox:disabled {
+    color: #000000;
+}
+
+QComboBox:!editable:on, QComboBox::drop-down:editable:on {
+	color: #AFBDC4;
+	background-color: transparent;
+	selection-background-color: transparent;
+}
+
+QComboBox:on {
+    padding-top: 3px;
+    padding-left: 4px;
+}
+
+QComboBox::drop-down {
+	background-color: transparent;
+    subcontrol-origin: padding;
+    subcontrol-position: top right;
+    width: 20px;
+    border-top-right-radius: 2px;
+    border-bottom-right-radius: 2px;
+}
+
+QComboBox::down-arrow:enabled {
+    image: url("./themes/elegant_dark/icons/down-arrow.png");
+}
+
+QComboBox::down-arrow:disabled {
+    image: url("./themes/elegant_dark/icons/down-arrow_off.png");
+}
+
+QComboBox::down-arrow:hover {
+    image: url("./themes/elegant_dark/icons/down-arrow_hover.png");
+}
+
+QComboBox::down-arrow:on {
+    top: 1px;
+    left: 1px;
+}
+
+QComboBox QAbstractItemView {
+background-color: rgb(100,100,100);
+}
+
+QProgressBar {
+	text-align: center;
+	color: rgb(240, 240, 240);
+	border-width: 1px;
+	border-radius: 10px;
+	border-color: rgb(58, 58, 58);
+	border-style: inset;
+	background-color:rgb(77,77,77);
+}
+QProgressBar::chunk {
+	background-color: #00ff00;
+	border-radius: 5px;
+}
+QMenuBar {
+	background:rgb(82, 82, 82);
+}
+QMenuBar::item {
+	color:rgb(223,219,210);
+	spacing: 3px;
+	padding: 1px 4px;
+	background: transparent;
+}
+
+QMenuBar::item:selected {
+	background:rgb(115, 115, 115);
+}
+QMenu::item:selected {
+	color:rgb(255,255,255);
+	border-width:2px;
+	border-style:solid;
+	padding-left:18px;
+	padding-right:8px;
+	padding-top:2px;
+	padding-bottom:3px;
+	background:qlineargradient(spread:pad, x1:0.5, y1:0.7, x2:0.5, y2:0.3, stop:0 rgba(87, 97, 106, 255), stop:1 rgba(93, 103, 113, 255));
+	border-top-color: qlineargradient(spread:pad, x1:0.5, y1:0.6, x2:0.5, y2:0.4, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(62, 62, 62, 255));
+	border-right-color: qlineargradient(spread:pad, x1:0.4, y1:0.5, x2:0.6, y2:0.5, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(62, 62, 62, 255));
+	border-left-color: qlineargradient(spread:pad, x1:0.6, y1:0.5, x2:0.4, y2:0.5, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(62, 62, 62, 255));
+	border-bottom-color: rgb(58, 58, 58);
+	border-bottom-width: 1px;
+}
+QMenu::item {
+	color:rgb(223,219,210);
+	background-color:rgb(78,78,78);
+	padding-left:20px;
+	padding-top:4px;
+	padding-bottom:4px;
+	padding-right:10px;
+}
+QMenu{
+	background-color:rgb(78,78,78);
+}
+QTabWidget {
+	color:rgb(0,0,0);
+	background-color:rgb(247,246,246);
+}
+QTabWidget::pane {
+		border-color: rgb(77,77,77);
+		background-color:rgb(101,101,101);
+		border-style: solid;
+		border-width: 1px;
+    	border-radius: 6px;
+}
+QTabBar::tab {
+	padding:2px;
+	color:rgb(250,250,250);
+  	background-color: qlineargradient(spread:pad, x1:0.5, y1:1, x2:0.5, y2:0, stop:0 rgba(77, 77, 77, 255), stop:1 rgba(97, 97, 97, 255));
+	border-style: solid;
+	border-width: 2px;
+  	border-top-right-radius:4px;
+   border-top-left-radius:4px;
+	border-top-color: qlineargradient(spread:pad, x1:0.5, y1:0.6, x2:0.5, y2:0.4, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(95, 92, 93, 255));
+	border-right-color: qlineargradient(spread:pad, x1:0.4, y1:0.5, x2:0.6, y2:0.5, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(95, 92, 93, 255));
+	border-left-color: qlineargradient(spread:pad, x1:0.6, y1:0.5, x2:0.4, y2:0.5, stop:0 rgba(115, 115, 115, 255), stop:1 rgba(95, 92, 93, 255));
+	border-bottom-color: rgb(101,101,101);
+}
+QTabBar::tab:selected, QTabBar::tab:last:selected, QTabBar::tab:hover {
+  	background-color:rgb(101,101,101);
+  	margin-left: 0px;
+  	margin-right: 1px;
+}
+QTabBar::tab:!selected {
+    	margin-top: 1px;
+		margin-right: 1px;
+}
+
+QStatusBar {
+	color:rgb(240,240,240);
+}
+
+QTextBrowser {
+	background-color: transparent;
+}
+
+QListWidget {
+	background-color: transparent;
+	border: 0px solid transparent;
+}
+
+QListView {
+	background-color: transparent;
+	color: #AFBDC4;
+	outline: 0;
+	border: 0px solid transparent;
+}
+QListView::item:hover {
+	color: #FFFFFF;
+	background: transparent;
+}
+
+QListView::item:selected {
+	color: #00ff00;
+	background: transparent;
+}
+
+QListView::item:disabled {
+	color: #9f9f9f;
+	background: transparent;
+}
+
+QListView::item:disabled:selected {
+	color: #00ff00;
+	background: transparent;
+}
+
+QScrollBar:horizontal {
+	background: transparent;
+	height: 10px;
+	margin: 0;
+}
+
+QScrollBar:vertical {
+	background: transparent;
+	width: 10px;
+	margin: 0;
+}
+
+QScrollBar::handle:horizontal {
+    background: rgb(101,101,101);
+    min-width: 16px;
+	border-radius: 5px;
+}
+
+QScrollBar::handle:vertical {
+    background: rgb(101,101,101);
+    min-height: 16px;
+	border-radius: 5px;
+}
+
+QScrollBar::add-page:horizontal, QScrollBar::sub-page:horizontal,
+QScrollBar::add-page:vertical, QScrollBar::sub-page:vertical {
+	background: none;
+}
+
+QScrollBar::add-line:horizontal, QScrollBar::sub-line:horizontal,
+QScrollBar::add-line:vertical, QScrollBar::sub-line:vertical {
+      border: none;
+      background: none;
+}

src/themes/material_design_dark/colors.txt

@@ -0,0 +1,4 @@
+active=#88cc00
+inactive=#546E7A
+off=#304352,#d7d2cc
+on=#3ca55c,#b5ac49

src/themes/material_design_dark/material_design_dark.qss

@@ -0,0 +1,489 @@
+/* Palette
+
+Background: 			#29353B
+Sec. Menu bkg:			#263238
+
+Label:					#AFBDC4
+Label Selected/hover:	#FFFFFF
+Label Pressed:			#FFFFFF
+Selection:				#88cc00
+
+ScrollBars:				#374146
+
+Signal detail Labels:	#CFD8DC
+Signal detail Dialogs:	#949a9c
+
+Disabled:				#546E7A
+
+/*************************************
+Main Window and Splitters
+**************************************/
+QWidget:window {
+	background-color: #29353B;
+}
+
+QSplitter::handle {
+    background-color: transparent;
+}
+
+QSlider::sub-page:horizontal {
+    background-color: #88cc00;
+}
+QSlider::sub-page:vertical {
+    background-color: #88cc00;
+}
+
+/*************************************
+Main menu (Bar)
+**************************************/
+QMenuBar {
+	background-color: transparent;
+	color: #AFBDC4;
+}
+
+QMenuBar::item {
+	background-color: transparent;
+}
+
+QMenuBar::item:disabled {
+	color: gray;
+}
+
+QMenuBar::item:selected {
+	color: #FFFFFF;
+	border-bottom: 2px solid #88cc00;
+}
+
+QMenuBar::item:pressed {
+	color: #FFFFFF;
+	border-bottom: 2px solid #88cc00;
+}
+
+QToolBar {
+	background-color: transparent;
+	border: 1px solid transparent;
+}
+
+QToolBar:handle {
+	background-color: transparent;
+	border-left: 2px dotted #80CBC4;
+	color: transparent;
+}
+
+QToolBar::separator {
+	border: 0;
+}
+
+QMenu {
+	background-color: #263238;
+	color: #AFBDC4;
+}
+
+QMenu::item:selected {
+	color: #FFFFFF;
+}
+
+QMenu::item:pressed {
+	color: #FFFFFF;
+}
+
+QMenu::separator {
+	background-color: transparent;
+	height: 1px;
+	margin-left: 10px;
+	margin-right: 10px;
+	margin-top: 5px;
+	margin-bottom: 5px;
+}
+
+/*************************************
+TabBar
+**************************************/
+QTabBar {
+	background: transparent;
+}
+
+QTabWidget::pane {
+	background: transparent;
+}
+
+QTabBar::tab {
+	background: transparent;
+	border: 0px solid transparent;
+	border-bottom: 2px solid transparent;
+	color: #AFBDC4;
+	padding-left: 10px;
+	padding-right: 10px;
+	padding-top: 3px;
+	padding-bottom: 3px;
+}
+
+QTabBar::tab:hover {
+	background-color: transparent;
+	border: 0px solid transparent;
+	border-bottom: 2px solid #88cc00;
+	color: #FFFFFF;
+}
+
+QTabBar::tab:selected {
+	background-color: transparent;
+	border: 0px solid transparent;
+	border-top: none;
+	border-bottom: 2px solid #88cc00;
+	color: #FFFFFF;
+}
+
+QStackedWidget {
+	background: #29353B;
+}
+
+/*************************************
+Progressbar
+**************************************/
+QProgressBar
+{
+    border: 2px solid grey;
+    border-radius: 5px;
+    text-align: center;
+}
+
+QProgressBar::chunk
+{
+    background-color: #88cc00;
+    width: 2.15px;
+    margin: 0.5px;
+}
+
+/*************************************
+Labels and Rich Text boxes
+**************************************/
+QLabel {
+	background-color: transparent;
+	color: #CFD8DC;
+}
+
+QDialog {
+	background-color: transparent;
+	color: #949a9c;
+}
+
+QTextBrowser {
+	background-color: transparent;
+	color: #949a9c;
+}
+
+/*************************************
+Search Bar
+**************************************/
+QLineEdit {
+	background-color: transparent;
+	selection-background-color: #669900;
+	color:  #669900;
+	border-width: 1px;
+	border-style: solid;
+	border-color: transparent transparent #669900 transparent;
+}
+
+QLineEdit:hover {
+	border-width: 2px;
+	border-color: transparent transparent #88cc00 transparent;
+}
+
+QLineEdit:focus {
+	border-width: 2px;
+	border-color: transparent transparent #88cc00 transparent;
+}
+
+/*************************************
+Scroll bars
+**************************************/
+QScrollBar:horizontal {
+	background: transparent;
+	height: 10px;
+	margin: 0;
+}
+
+QScrollBar:vertical {
+	background: transparent;
+	width: 10px;
+	margin: 0;
+}
+
+QScrollBar::handle:horizontal {
+    background: #374146;
+    min-width: 16px;
+	border-radius: 5px;
+}
+
+QScrollBar::handle:vertical {
+    background: #374146;
+    min-height: 16px;
+	border-radius: 5px;
+}
+
+QScrollBar::add-page:horizontal, QScrollBar::sub-page:horizontal,
+QScrollBar::add-page:vertical, QScrollBar::sub-page:vertical {
+	background: none;
+}
+
+QScrollBar::add-line:horizontal, QScrollBar::sub-line:horizontal,
+QScrollBar::add-line:vertical, QScrollBar::sub-line:vertical {
+      border: none;
+      background: none;
+}
+
+/*************************************
+List
+**************************************/
+QListWidget {
+	background-color: transparent;
+	border: 0px solid transparent;
+	border-bottom: 2px solid #80CBC4;
+	color: #AFBDC4;
+}
+
+QListView {
+	background-color: transparent;
+	color: #AFBDC4;
+	outline: 0;
+	border: 0px solid transparent;
+}
+QListView::item:hover {
+	color: #FFFFFF;
+	background: transparent;
+}
+
+QListView::item:selected {
+	color: #88cc00;
+	background: transparent;
+}
+
+QListView::item:disabled {
+	color: #546E7A;
+	background: transparent;
+}
+
+QListView::item:disabled:selected {
+	color: #88cc00;
+	background: transparent;
+}
+
+/*************************************
+Buttons
+**************************************/
+QPushButton {
+	background-color: transparent;
+	color: #AFBDC4;
+	border: 1px solid transparent;
+	padding: 4px 22px;
+}
+
+QPushButton:hover {
+	border-left: 2px solid #88cc00;
+    border-right: 2px solid #88cc00;
+	color: #FFFFFF;
+}
+
+QPushButton:pressed {
+	color: #FFFFFF;
+}
+
+QPushButton:disabled {
+	color:#546E7A;
+}
+
+QPushButton:checked {
+	color: #88cc00;
+}
+
+/*************************************
+ComboBox
+**************************************/
+QComboBox {
+    border: 0px solid transparent;
+    border-radius: 2px;
+    padding: 1px 6px 1px 6px;
+    min-width: 2em;
+}
+
+QComboBox:!editable {
+	selection-background-color: transparent;
+    color: #AFBDC4;
+    selection-color: #FFFFFF;
+	background-color: transparent;
+}
+
+QComboBox:disabled {
+    color: #546E7A;
+}
+
+QComboBox:!editable:on, QComboBox::drop-down:editable:on {
+	color: #AFBDC4;
+	background-color: transparent;
+	selection-background-color: transparent;
+}
+
+QComboBox:on {
+    padding-top: 3px;
+    padding-left: 4px;
+}
+
+QComboBox::drop-down {
+	background-color: transparent;
+    subcontrol-origin: padding;
+    subcontrol-position: top right;
+    width: 20px;
+    border-top-right-radius: 2px;
+    border-bottom-right-radius: 2px;
+}
+
+QComboBox::down-arrow:enabled {
+    image: url("./themes/material_design_dark/icons/down-arrow.png");
+}
+
+QComboBox::down-arrow:disabled {
+    image: url("./themes/material_design_dark/icons/down-arrow_off.png");
+}
+
+QComboBox::down-arrow:hover {
+    image: url("./themes/material_design_dark/icons/down-arrow_hover.png");
+}
+
+QComboBox::down-arrow:on {
+    top: 1px;
+    left: 1px;
+}
+
+QComboBox QAbstractItemView {
+background-color: #29353B;
+}
+
+/*************************************
+RadioButton
+**************************************/
+QRadioButton{
+    color: #AFBDC4;
+}
+
+QRadioButton:disabled{
+    color: #546E7A;
+}
+
+QRadioButton::indicator{
+    width: 50px;
+    height: 50px;
+}
+
+QRadioButton::indicator::unchecked {
+    image: url("./themes/material_design_dark/icons/off.png");
+}
+
+QRadioButton::indicator:unchecked:hover {
+    image: url("./themes/material_design_dark/icons/off_press.png");
+}
+
+QRadioButton::indicator:unchecked:pressed {
+    image: url("./themes/material_design_dark/icons/off_press.png");
+}
+
+QRadioButton::indicator::checked {
+    image: url("./themes/material_design_dark/icons/on.png");
+}
+
+QRadioButton::indicator:checked:hover {
+    image: url("./themes/material_design_dark/icons/on_press.png");
+}
+
+QRadioButton::indicator:checked:pressed {
+    image: url("./themes/material_design_dark/icons/on_press.png");
+}
+
+/*************************************
+SpinBox
+**************************************/
+QSpinBox {
+	background-color: transparent;
+    color: #AFBDC4;
+    border-width: 0px;
+}
+
+QSpinBox:disabled {
+    color: #546E7A;
+    border-width: 0px;
+}
+
+QSpinBox::up-button {
+    subcontrol-origin: border;
+    subcontrol-position: top right;
+    width: 16px;
+    image: url("./themes/material_design_dark/icons/up-arrow.png");
+    border-width: 0px;
+}
+
+QSpinBox::up-button:hover {
+    image: url("./themes/material_design_dark/icons/up-arrow_hover.png");
+}
+
+QSpinBox::up-button:pressed {
+    image: url("./themes/material_design_dark/icons/up-arrow.png");
+}
+
+QSpinBox::up-button:disabled {
+    image: url("./themes/material_design_dark/icons/up-arrow_off.png");
+}
+
+QSpinBox::down-button {
+    subcontrol-origin: border;
+    subcontrol-position: bottom right;
+    width: 16px;
+    image: url("./themes/material_design_dark/icons/down-arrow.png");
+    border-width: 0px;
+    border-top-width: 0;
+}
+
+QSpinBox::down-button:hover {
+    image: url("./themes/material_design_dark/icons/down-arrow_hover.png");
+}
+
+QSpinBox::down-button:pressed {
+    image: url("./themes/material_design_dark/icons/down-arrow.png");
+}
+
+QSpinBox::down-button:disabled {
+    image: url("./themes/material_design_dark/icons/down-arrow_off.png");
+}
+
+/*************************************
+TreeViewMenu (Mode)
+**************************************/
+QTreeView {
+	background-color: transparent;
+    selection-background-color: transparent;
+	border: 0px;
+}
+
+QTreeView::item {
+	background-color: transparent;
+	color: #AFBDC4;
+}
+
+QTreeView::item:hover {
+    border-right: 2px solid #88cc00;
+	color: #FFFFFF;
+}
+
+QTreeView::item:selected {
+	color: #88cc00;
+}
+
+QTreeView::item:active{
+	background: transparent;
+}
+
+QTreeView::item:disabled{
+	color: #546E7A;
+}
+
+QTreeView::item:selected:disabled{
+	color: #88cc00;
+}

src/themes/material_design_light/colors.txt

@@ -0,0 +1,4 @@
+active=#6ECE12
+inactive=#b3b3cc
+off=#948e99,#2e1437
+on=#b993d6,#8ca6db

src/themes/material_design_light/material_design_light.qss

@@ -0,0 +1,489 @@
+/* Palette
+
+Background: 			#F5F5F5
+Sec. Menu bkg:			#DCDCDC
+
+Label:					#29353B
+Label Selected/hover:	#000000
+Label Pressed:			#000000
+Selection:				#6ECE12
+
+ScrollBars:				#DCDCDC
+
+Labels:					#29353B
+Dialogs:				#29353B
+
+Disabled:				#b3b3cc
+
+/*************************************
+Main Window and Splitters
+**************************************/
+QWidget:window {
+	background-color: #F5F5F5;
+}
+
+QSplitter::handle {
+    background-color: transparent;
+}
+
+QSlider::sub-page:horizontal {
+    background-color: #6ECE12;
+}
+QSlider::sub-page:vertical {
+    background-color: #6ECE12;
+}
+
+/*************************************
+Main menu (Bar)
+**************************************/
+QMenuBar {
+	background-color: transparent;
+	color: #29353B;
+}
+
+QMenuBar::item {
+	background-color: transparent;
+}
+
+QMenuBar::item:disabled {
+	color: gray;
+}
+
+QMenuBar::item:selected {
+	color: #000000;
+	border-bottom: 2px solid #6ECE12;
+}
+
+QMenuBar::item:pressed {
+	color: #000000;
+	border-bottom: 2px solid #6ECE12;
+}
+
+QToolBar {
+	background-color: transparent;
+	border: 1px solid transparent;
+}
+
+QToolBar:handle {
+	background-color: transparent;
+	border-left: 2px dotted #80CBC4;
+	color: transparent;
+}
+
+QToolBar::separator {
+	border: 0;
+}
+
+QMenu {
+	background-color: #DCDCDC;
+	color: #29353B;
+}
+
+QMenu::item:selected {
+	color: #000000;
+}
+
+QMenu::item:pressed {
+	color: #000000;
+}
+
+QMenu::separator {
+	background-color: transparent;
+	height: 1px;
+	margin-left: 10px;
+	margin-right: 10px;
+	margin-top: 5px;
+	margin-bottom: 5px;
+}
+
+/*************************************
+TabBar
+**************************************/
+QTabBar {
+	background: transparent;
+}
+
+QTabWidget::pane {
+	background: transparent;
+}
+
+QTabBar::tab {
+	background: transparent;
+	border: 0px solid transparent;
+	border-bottom: 2px solid transparent;
+	color: #29353B;
+	padding-left: 10px;
+	padding-right: 10px;
+	padding-top: 3px;
+	padding-bottom: 3px;
+}
+
+QTabBar::tab:hover {
+	background-color: transparent;
+	border: 0px solid transparent;
+	border-bottom: 2px solid #6ECE12;
+	color: #000000;
+}
+
+QTabBar::tab:selected {
+	background-color: transparent;
+	border: 0px solid transparent;
+	border-top: none;
+	border-bottom: 2px solid #6ECE12;
+	color: #000000;
+}
+
+QStackedWidget {
+	background: #F5F5F5;
+}
+
+/*************************************
+Progressbar
+**************************************/
+QProgressBar
+{
+    border: 2px solid grey;
+    border-radius: 5px;
+    text-align: center;
+}
+
+QProgressBar::chunk
+{
+    background-color: #6ECE12;
+    width: 2.15px;
+    margin: 0.5px;
+}
+
+/*************************************
+Labels and Rich Text boxes
+**************************************/
+QLabel {
+	background-color: transparent;
+	color: #29353B;
+}
+
+QDialog {
+	background-color: transparent;
+	color: #29353B;
+}
+
+QTextBrowser {
+	background-color: transparent;
+	color: #29353B;
+}
+
+/*************************************
+Search Bar
+**************************************/
+QLineEdit {
+	background-color: transparent;
+	selection-background-color: #669900;
+	color:  #669900;
+	border-width: 1px;
+	border-style: solid;
+	border-color: transparent transparent #669900 transparent;
+}
+
+QLineEdit:hover {
+	border-width: 2px;
+	border-color: transparent transparent #6ECE12 transparent;
+}
+
+QLineEdit:focus {
+	border-width: 2px;
+	border-color: transparent transparent #6ECE12 transparent;
+}
+
+/*************************************
+Scroll bars
+**************************************/
+QScrollBar:horizontal {
+	background: transparent;
+	height: 10px;
+	margin: 0;
+}
+
+QScrollBar:vertical {
+	background: transparent;
+	width: 10px;
+	margin: 0;
+}
+
+QScrollBar::handle:horizontal {
+    background: #DCDCDC;
+    min-width: 16px;
+	border-radius: 5px;
+}
+
+QScrollBar::handle:vertical {
+    background: #DCDCDC;
+    min-height: 16px;
+	border-radius: 5px;
+}
+
+QScrollBar::add-page:horizontal, QScrollBar::sub-page:horizontal,
+QScrollBar::add-page:vertical, QScrollBar::sub-page:vertical {
+	background: none;
+}
+
+QScrollBar::add-line:horizontal, QScrollBar::sub-line:horizontal,
+QScrollBar::add-line:vertical, QScrollBar::sub-line:vertical {
+      border: none;
+      background: none;
+}
+
+/*************************************
+List
+**************************************/
+QListWidget {
+	background-color: transparent;
+	border: 0px solid transparent;
+	border-bottom: 2px solid #80CBC4;
+	color: #29353B;
+}
+
+QListView {
+	background-color: transparent;
+	color: #29353B;
+	outline: 0;
+	border: 0px solid transparent;
+}
+QListView::item:hover {
+	color: #000000;
+	background: transparent;
+}
+
+QListView::item:selected {
+	color: #6ECE12;
+	background: transparent;
+}
+
+QListView::item:disabled {
+	color: #b3b3cc;
+	background: transparent;
+}
+
+QListView::item:disabled:selected {
+	color: #6ECE12;
+	background: transparent;
+}
+
+/*************************************
+Buttons
+**************************************/
+QPushButton {
+	background-color: transparent;
+	color: #29353B;
+	border: 1px solid transparent;
+	padding: 4px 22px;
+}
+
+QPushButton:hover {
+	border-left: 2px solid #6ECE12;
+    border-right: 2px solid #6ECE12;
+	color: #000000;
+}
+
+QPushButton:pressed {
+	color: #000000;
+}
+
+QPushButton:disabled {
+	color:#b3b3cc;
+}
+
+QPushButton:checked {
+	color: #6ECE12;
+}
+
+/*************************************
+ComboBox
+**************************************/
+QComboBox {
+    border: 0px solid transparent;
+    border-radius: 2px;
+    padding: 1px 6px 1px 6px;
+    min-width: 2em;
+}
+
+QComboBox:!editable {
+	selection-background-color: transparent;
+    color: #29353B;
+    selection-color: #000000;
+	background-color: transparent;
+}
+
+QComboBox:disabled {
+    color: #b3b3cc;
+}
+
+QComboBox:!editable:on, QComboBox::drop-down:editable:on {
+	color: #29353B;
+	background-color: transparent;
+	selection-background-color: transparent;
+}
+
+QComboBox:on {
+    padding-top: 3px;
+    padding-left: 4px;
+}
+
+QComboBox::drop-down {
+	background-color: transparent;
+    subcontrol-origin: padding;
+    subcontrol-position: top right;
+    width: 20px;
+    border-top-right-radius: 2px;
+    border-bottom-right-radius: 2px;
+}
+
+QComboBox::down-arrow:enabled {
+    image: url("./themes/material_design_light/icons/down-arrow.png");
+}
+
+QComboBox::down-arrow:disabled {
+    image: url("./themes/material_design_light/icons/down-arrow_off.png");
+}
+
+QComboBox::down-arrow:hover {
+    image: url("./themes/material_design_light/icons/down-arrow_hover.png");
+}
+
+QComboBox::down-arrow:on {
+    top: 1px;
+    left: 1px;
+}
+
+QComboBox QAbstractItemView {
+background-color: #F5F5F5;
+}
+
+/*************************************
+RadioButton
+**************************************/
+QRadioButton{
+    color: #29353B;
+}
+
+QRadioButton:disabled{
+    color: #b3b3cc;
+}
+
+QRadioButton::indicator{
+    width: 50px;
+    height: 50px;
+}
+
+QRadioButton::indicator::unchecked {
+    image: url("./themes/material_design_light/icons/off.png");
+}
+
+QRadioButton::indicator:unchecked:hover {
+    image: url("./themes/material_design_light/icons/off_press.png");
+}
+
+QRadioButton::indicator:unchecked:pressed {
+    image: url("./themes/material_design_light/icons/off_press.png");
+}
+
+QRadioButton::indicator::checked {
+    image: url("./themes/material_design_light/icons/on.png");
+}
+
+QRadioButton::indicator:checked:hover {
+    image: url("./themes/material_design_light/icons/on_press.png");
+}
+
+QRadioButton::indicator:checked:pressed {
+    image: url("./themes/material_design_light/icons/on_press.png");
+}
+
+/*************************************
+SpinBox
+**************************************/
+QSpinBox {
+	background-color: transparent;
+    color: #29353B;
+    border-width: 0px;
+}
+
+QSpinBox:disabled {
+    color: #b3b3cc;
+    border-width: 0px;
+}
+
+QSpinBox::up-button {
+    subcontrol-origin: border;
+    subcontrol-position: top right;
+    width: 16px;
+    image: url("./themes/material_design_light/icons/up-arrow.png");
+    border-width: 0px;
+}
+
+QSpinBox::up-button:hover {
+    image: url("./themes/material_design_light/icons/up-arrow_hover.png");
+}
+
+QSpinBox::up-button:pressed {
+    image: url("./themes/material_design_light/icons/up-arrow.png");
+}
+
+QSpinBox::up-button:disabled {
+    image: url("./themes/material_design_light/icons/up-arrow_off.png");
+}
+
+QSpinBox::down-button {
+    subcontrol-origin: border;
+    subcontrol-position: bottom right;
+    width: 16px;
+    image: url("./themes/material_design_light/icons/down-arrow.png");
+    border-width: 0px;
+    border-top-width: 0;
+}
+
+QSpinBox::down-button:hover {
+    image: url("./themes/material_design_light/icons/down-arrow_hover.png");
+}
+
+QSpinBox::down-button:pressed {
+    image: url("./themes/material_design_light/icons/down-arrow.png");
+}
+
+QSpinBox::down-button:disabled {
+    image: url("./themes/material_design_light/icons/down-arrow_off.png");
+}
+
+/*************************************
+TreeViewMenu (Mode)
+**************************************/
+QTreeView {
+	background-color: transparent;
+    selection-background-color: transparent;
+		border: 0px;
+}
+
+QTreeView::item {
+	background-color: transparent;
+	color: #29353B;
+}
+
+QTreeView::item:hover {
+    border-right: 2px solid #6ECE12;
+	color: #000000;
+}
+
+QTreeView::item:selected {
+	color: #6ECE12;
+}
+
+QTreeView::item:active{
+	background: transparent;
+}
+
+QTreeView::item:disabled{
+	color: #b3b3cc;
+}
+
+QTreeView::item:selected:disabled{
+	color: #6ECE12;
+}

src/themesmanager.py

@@ -0,0 +1,368 @@
+from functools import partial
+from itertools import chain
+import os
+import re
+from PyQt5.QtWidgets import QAction, QActionGroup
+from PyQt5.QtCore import pyqtSlot
+from PyQt5.QtGui import QPixmap
+from constants import Constants
+from switchable_label import SwitchableLabelsIterable
+from utilities import pop_up
+
+
+class ThemeConstants:
+    """Container class for all the theme-related constants."""
+
+    FOLDER                    = "themes"
+    EXTENSION                 = ".qss"
+    ICONS_FOLDER              = "icons"
+    DEFAULT                   = "dark"
+    CURRENT                   = ".current_theme"
+    COLORS                    = "colors.txt"
+    COLOR_SEPARATOR           = "="
+    DEFAULT_ACTIVE_COLOR      = "#000000"
+    DEFAULT_INACTIVE_COLOR    = "#9f9f9f"
+    DEFAULT_OFF_COLORS        = "#000000", "#434343"
+    DEFAULT_ON_COLORS         = "#4b79a1", "#283e51"
+    DEFAULT_TEXT_COLOR        = "#ffffff"
+    THEME_NOT_FOUND           = "Theme not found"
+    MISSING_THEME             = "Missing theme in '" + FOLDER + "' folder."
+    MISSING_THEME_FOLDER      = "'" + FOLDER + "'" + " folder not found.\nOnly the basic theme is available."
+    THEME_FOLDER_NOT_FOUND    = "'" + FOLDER + "'" + " folder not found"
+    DEFAULT_ICONS_PATH        = os.path.join(FOLDER, DEFAULT, ICONS_FOLDER)
+    DEFAULT_SEARCH_LABEL_PATH = os.path.join(DEFAULT_ICONS_PATH, Constants.SEARCH_LABEL_IMG)
+    DEFAULT_VOLUME_LABEL_PATH = os.path.join(DEFAULT_ICONS_PATH, Constants.VOLUME_LABEL_IMG)
+    CURRENT_THEME_FILE        = os.path.join(FOLDER, CURRENT)
+    DEFAULT_THEME_PATH        = os.path.join(FOLDER, DEFAULT)
+
+
+class _ColorsHandler:
+    """Manage the theme's secondary colors.
+
+    Contains a _Color inner class."""
+
+    class _Color:
+        """Characterize a color from a string.
+
+        Can handle strings representing multiple colors."""
+
+        MAX_COLORS = 2
+
+        def __init__(self, line):
+            """Define the color from the string 'line'.
+
+            All relevant features are defined:
+            - if the format is valid;
+            - if 'line' represent a single color or a list of colors.
+            - the 'quality' of the color."""
+            quality, color_str = line.split(ThemeConstants.COLOR_SEPARATOR)
+            color_str = color_str.strip()
+            self.quality = quality.lower().strip()
+            self.color_str = ''
+            self.color_list = []
+            if ',' in color_str:
+                self.is_simple_string = False
+                self.color_list = [c.strip() for c in color_str.split(',')]
+            else:
+                self.is_simple_string = True
+                self.color_str = color_str
+            self.is_valid = self._color_is_valid()
+
+        def _color_is_valid(self):
+            """Return if the color (or the list of colors) has a valid html format."""
+            pattern = "#([a-zA-Z0-9]){6}"
+
+            def match_ok(col):
+                return bool(re.match(pattern, col)) and len(col) == 7
+
+            if not self.is_simple_string:
+                if len(self.color_list) <= self.MAX_COLORS:
+                    return all(match_ok(c) for c in self.color_list)
+                else:
+                    return False
+            else:
+                return match_ok(self.color_str)
+
+    def __init__(self, simple_color_list, double_color_list):
+        """Initialize the lists of valid _Color objects."""
+        self.simple_color_list = simple_color_list
+        self.double_color_list = double_color_list
+
+    @classmethod
+    def from_file(cls, colors_str):
+        """Return a _ColorsHandler object with two lists of valid _Color objects.
+
+        If the file is empty or there are no valid colors return None."""
+        if colors_str:
+            simple_color_list = []
+            double_color_list = []
+            for line in colors_str.splitlines():
+                color = cls._Color(line)
+                if color.is_valid:
+                    if color.is_simple_string:
+                        simple_color_list.append(color)
+                    else:
+                        double_color_list.append(color)
+            if simple_color_list or double_color_list:
+                return cls(simple_color_list, double_color_list)
+        return None
+
+
+class ThemeManager:
+    """Manage all the operations releted to the themes."""
+
+    def __init__(self, owner):
+        """Initialize the ThemeManager instance."""
+        self._owner = owner
+        self._owner.active_color = ThemeConstants.DEFAULT_ACTIVE_COLOR
+        self._owner.inactive_color = ThemeConstants.DEFAULT_INACTIVE_COLOR
+
+        self._theme_path = ""
+        self._current_theme = ""
+
+        self._space_weather_labels = SwitchableLabelsIterable(
+            *list(
+                chain(
+                    self._owner.switchable_r_labels,
+                    self._owner.switchable_s_labels,
+                    self._owner.switchable_g_now_labels,
+                    self._owner.switchable_g_today_labels,
+                    self._owner.k_storm_labels,
+                    self._owner.a_storm_labels,
+                    [self._owner.expected_noise_lbl]
+                )
+            )
+        )
+
+        self._space_weather_labels.set(
+            "switch_on_colors",
+            ThemeConstants.DEFAULT_ON_COLORS
+        )
+        self._space_weather_labels.set(
+            "switch_off_colors", ThemeConstants.DEFAULT_OFF_COLORS
+        )
+
+        self._theme_names = {}
+
+    def _refresh_range_labels(self):
+        """Refresh the range-labels."""
+        self._owner.set_acf_interval_label()
+        self._owner.set_band_filter_label(
+            self._owner.activate_low_band_filter_btn,
+            self._owner.lower_band_spinbox,
+            self._owner.lower_band_filter_unit,
+            self._owner.lower_band_confidence,
+            self._owner.activate_up_band_filter_btn,
+            self._owner.upper_band_spinbox,
+            self._owner.upper_band_filter_unit,
+            self._owner.upper_band_confidence,
+            self._owner.band_range_lbl
+        )
+
+        self._owner.set_band_filter_label(
+            self._owner.activate_low_freq_filter_btn,
+            self._owner.lower_freq_spinbox,
+            self._owner.lower_freq_filter_unit,
+            self._owner.lower_freq_confidence,
+            self._owner.activate_up_freq_filter_btn,
+            self._owner.upper_freq_spinbox,
+            self._owner.upper_freq_filter_unit,
+            self._owner.upper_freq_confidence,
+            self._owner.freq_range_lbl
+        )
+
+    @pyqtSlot()
+    def _apply(self, theme_path):
+        """Apply the selected theme.
+
+        Refresh all relevant widgets.
+        Display a QMessageBox if the theme is not found."""
+        self._theme_path = theme_path
+        if os.path.exists(theme_path):
+            if self._theme_path != self._current_theme:
+                self._change()
+                self._owner.display_specs(
+                    item=self._owner.signals_list.currentItem(),
+                    previous_item=None
+                )
+                self._refresh_range_labels()
+                self._owner.audio_widget.refresh_btns_colors(
+                    self._owner.active_color,
+                    self._owner.inactive_color
+                )
+                self._space_weather_labels.refresh()
+        else:
+            pop_up(self._owner, title=ThemeConstants.THEME_NOT_FOUND,
+                   text=ThemeConstants.MISSING_THEME).show()
+
+    def _pretty_name(self, bad_name):
+        """Return a well-formatted theme name."""
+        return ' '.join(
+            map(
+                lambda s: s.capitalize(),
+                bad_name.split('_')
+            )
+        )
+
+    def _detect_themes(self):
+        """Detect all available themes.
+
+        Connect all the actions to change the theme.
+        Display a QMessageBox if the theme folder is not found."""
+        themes = []
+        ag = QActionGroup(self._owner, exclusive=True)
+        if os.path.exists(ThemeConstants.FOLDER):
+            for theme_folder in sorted(os.listdir(ThemeConstants.FOLDER)):
+                relative_folder = os.path.join(ThemeConstants.FOLDER, theme_folder)
+                if os.path.isdir(os.path.abspath(relative_folder)):
+                    relative_folder = os.path.join(ThemeConstants.FOLDER, theme_folder)
+                    themes.append(relative_folder)
+            for theme_path in themes:
+                theme_name = '&' + self._pretty_name(os.path.basename(theme_path))
+                new_theme = ag.addAction(
+                    QAction(
+                        theme_name,
+                        self._owner, checkable=True
+                    )
+                )
+                self._owner.menu_themes.addAction(new_theme)
+                self._theme_names[theme_name.lstrip('&')] = new_theme
+                new_theme.triggered.connect(partial(self._apply, theme_path))
+        else:
+            pop_up(self._owner, title=ThemeConstants.THEME_FOLDER_NOT_FOUND,
+                   text=ThemeConstants.MISSING_THEME_FOLDER).show()
+
+    def _change(self):
+        """Change the current theme.
+
+        Apply the stylesheet and set active and inactive colors.
+        Set all the new images needed.
+        Save the new current theme on file."""
+        theme_name = os.path.basename(self._theme_path) + ThemeConstants.EXTENSION
+        try:
+            with open(os.path.join(self._theme_path, theme_name), "r") as stylesheet:
+                style = stylesheet.read()
+                self._owner.setStyleSheet(style)
+                self._owner.download_window.setStyleSheet(style)
+        except FileNotFoundError:
+            pop_up(self._owner, title=ThemeConstants.THEME_NOT_FOUND,
+                   text=ThemeConstants.MISSING_THEME).show()
+        else:
+            icons_path = os.path.join(self._theme_path, ThemeConstants.ICONS_FOLDER)
+
+            path_to_search_label = os.path.join(icons_path, Constants.SEARCH_LABEL_IMG)
+
+            if os.path.exists(path_to_search_label):
+                path = path_to_search_label
+            else:
+                path = ThemeConstants.DEFAULT_SEARCH_LABEL_PATH
+
+            self._owner.search_label.setPixmap(QPixmap(path))
+            self._owner.modulation_search_label.setPixmap(QPixmap(path))
+            self._owner.location_search_label.setPixmap(QPixmap(path))
+
+            self._owner.search_label.setScaledContents(True)
+            self._owner.modulation_search_label.setScaledContents(True)
+            self._owner.location_search_label.setScaledContents(True)
+
+            path_to_volume_label = os.path.join(icons_path, Constants.VOLUME_LABEL_IMG)
+
+            if os.path.exists(path_to_volume_label):
+                path = path_to_volume_label
+            else:
+                path = ThemeConstants.DEFAULT_VOLUME_LABEL_PATH
+
+            self._owner.volume_label.setPixmap(QPixmap(path))
+            self._owner.volume_label.setScaledContents(True)
+
+            path_to_colors = os.path.join(self._theme_path, ThemeConstants.COLORS)
+
+            active_color_ok     = False
+            inactive_color_ok   = False
+            switch_on_color_ok  = False
+            switch_off_color_ok = False
+            text_color_ok       = False
+
+            if os.path.exists(path_to_colors):
+                with open(path_to_colors, "r") as colors_file:
+                    color_handler = _ColorsHandler.from_file(colors_file.read())
+
+                if color_handler is not None:
+                    for color in color_handler.simple_color_list:
+                        if color.quality == Constants.ACTIVE:
+                            self._owner.active_color = color.color_str
+                            active_color_ok = True
+                        if color.quality == Constants.INACTIVE:
+                            self._owner.inactive_color = color.color_str
+                            inactive_color_ok = True
+                        if color.quality == Constants.TEXT_COLOR:
+                            text_color_ok = True
+                            self._space_weather_labels.set(
+                                "text_color",
+                                color.color_str
+                            )
+                    for color in color_handler.double_color_list:
+                        if color.quality == Constants.LABEL_ON_COLOR:
+                            switch_on_color_ok = True
+                            self._space_weather_labels.set(
+                                "switch_on_colors",
+                                color.color_list
+                            )
+                        if color.quality == Constants.LABEL_OFF_COLOR:
+                            switch_off_color_ok = True
+                            self._space_weather_labels.set(
+                                "switch_off_colors",
+                                color.color_list
+                            )
+
+            if not (active_color_ok and inactive_color_ok):
+                self._owner.active_color = ThemeConstants.DEFAULT_ACTIVE_COLOR
+                self._owner.inactive_color = ThemeConstants.DEFAULT_INACTIVE_COLOR
+
+            if not (switch_on_color_ok and switch_off_color_ok):
+                self._space_weather_labels.set(
+                    "switch_on_colors",
+                    ThemeConstants.DEFAULT_ON_COLORS
+                )
+                self._space_weather_labels.set(
+                    "switch_off_colors",
+                    ThemeConstants.DEFAULT_OFF_COLORS
+                )
+
+            if not text_color_ok:
+                self._space_weather_labels.set(
+                    "text_color",
+                    ThemeConstants.DEFAULT_TEXT_COLOR
+                )
+            self._current_theme = self._theme_path
+
+            try:
+                with open(ThemeConstants.CURRENT_THEME_FILE, "w") as current_theme:
+                    current_theme.write(self._theme_path)
+            except Exception:
+                pass
+
+    def start(self):
+        """Start the theme manager."""
+        self._detect_themes()
+        if os.path.exists(ThemeConstants.CURRENT_THEME_FILE):
+            with open(ThemeConstants.CURRENT_THEME_FILE, "r") as current_theme_path:
+                theme_path = current_theme_path.read()
+            theme_name = self._pretty_name(os.path.basename(theme_path))
+            try:
+                self._theme_names[theme_name].setChecked(True)
+            except Exception:
+                pop_up(self._owner, title=ThemeConstants.THEME_NOT_FOUND,
+                       text=ThemeConstants.MISSING_THEME).show()
+            else:
+                self._apply(theme_path)
+        else:
+            try:
+                self._theme_names[
+                    self._pretty_name(ThemeConstants.DEFAULT)
+                ].setChecked(True)
+            except Exception:
+                pop_up(self._owner, title=ThemeConstants.THEME_NOT_FOUND,
+                       text=ThemeConstants.MISSING_THEME).show()
+            else:
+                self._apply(ThemeConstants.DEFAULT_THEME_PATH)

src/threads.py

@@ -0,0 +1,271 @@
+import asyncio
+from enum import Enum, auto
+from io import BytesIO
+from math import ceil
+import os.path
+from shutil import rmtree
+from time import perf_counter
+from zipfile import ZipFile
+import aiohttp
+import urllib3
+from PyQt5.QtCore import QThread, pyqtSignal
+from constants import Constants, Database, ChecksumWhat
+from utilities import checksum_ok
+
+# Needed for pyinstaller compilation.
+import encodings.idna
+
+
+class ThreadStatus(Enum):
+    """Possible thread status."""
+
+    OK                = auto()
+    NO_CONNECTION_ERR = auto()
+    UNKNOWN_ERR       = auto()
+    BAD_DOWNLOAD_ERR  = auto()
+    UNDEFINED         = auto()
+    SLOW_CONN_ERR     = auto()
+
+
+class _SlowConnError(Exception):
+    pass
+
+
+class BaseDownloadThread(QThread):
+    """Subclass QThread. Base class for the download threads."""
+
+    def __init__(self, parent=None):
+        """Set the status to 'UNDEFINED'."""
+        super().__init__(parent)
+        self.status = ThreadStatus.UNDEFINED
+
+    def __del__(self):
+        """Force the termination of the thread."""
+        self.terminate()
+        self.wait()
+
+
+class DownloadThread(BaseDownloadThread):
+    """Subclass BaseDownloadThread. Download the database, images and audio samples."""
+
+    progress = pyqtSignal(int)
+    speed_progress = pyqtSignal(float)
+    _CHUNK = 128 * 1024
+    _MEGA = 1024**2
+    _DELTAT = 2
+
+    def __init__(self):
+        """Just call super().__init__."""
+        self._db = None
+        self._exit_call = False
+        super().__init__()
+
+    def _pretty_len(self, byte_obj):
+        """Return a well-formatted number of downloaded MB."""
+        mega = len(byte_obj) / self._MEGA
+        if mega.is_integer():
+            return int(mega)
+        else:
+            return ceil(mega)
+
+    def _get_download_speed(self, data, delta):
+        """Return the download speed in MB/s."""
+        return round(
+            (len(data) / self._MEGA) / delta, 2
+        )
+
+    def set_exit(self):
+        self._exit_call = True
+
+    def run(self):
+        """Override QThread.run. Download the database, images and audio samples.
+
+        Handle all possible exceptions. Also extract the files
+        in the local folder."""
+        self.status = ThreadStatus.UNDEFINED
+        self._db = None
+        raw_data = bytes(0)
+        sub_data = bytes(0)
+        try:
+            self._db = urllib3.PoolManager().request(
+                'GET',
+                Database.LINK_LOC,
+                preload_content=False,
+                timeout=4.0
+            )
+            start = perf_counter()
+            prev_downloaded = 0
+            while True:
+                try:
+                    data = self._db.read(self._CHUNK)
+                except Exception:
+                    raise _SlowConnError
+                else:
+                    delta = perf_counter() - start
+                    if not data:
+                        break
+                    raw_data += data
+                    sub_data += data
+                    # Emit a progress signal only if at least 1 MB has been downloaded.
+                    if len(raw_data) - prev_downloaded >= self._MEGA:
+                        prev_downloaded = len(raw_data)
+                        self.progress.emit(self._pretty_len(raw_data))
+                    if delta >= self._DELTAT:
+                        self.speed_progress.emit(
+                            self._get_download_speed(sub_data, delta)
+                        )
+                        sub_data = bytes(0)
+                        start = perf_counter()
+                    if self._exit_call:
+                        self._exit_call = False
+                        self._db.release_conn()
+                        return
+        except Exception as e:  # No (or bad) internet connection.
+            self._db.release_conn()
+            if isinstance(e, _SlowConnError):
+                self.status = ThreadStatus.SLOW_CONN_ERR
+            else:
+                self.status = ThreadStatus.NO_CONNECTION_ERR
+            return
+        if self._db.status != 200:
+            self.status = ThreadStatus.BAD_DOWNLOAD_ERR
+            return
+        try:
+            is_checksum_ok = checksum_ok(raw_data, ChecksumWhat.FOLDER)
+        except Exception:  # checksum_ok unable to connect to the reference.
+            self.status = ThreadStatus.NO_CONNECTION_ERR
+            return
+        else:
+            if not is_checksum_ok:
+                self.status = ThreadStatus.BAD_DOWNLOAD_ERR
+                return
+        if os.path.exists(Constants.DATA_FOLDER):
+            rmtree(Constants.DATA_FOLDER)
+        try:
+            self.progress.emit(Constants.EXTRACTING_CODE)
+            self.speed_progress.emit(Constants.ZERO_FINAL_SPEED)
+            with ZipFile(BytesIO(raw_data)) as zipped:
+                zipped.extractall()
+        except Exception:
+            self.status = ThreadStatus.UNKNOWN_ERR
+        else:
+            self.status = ThreadStatus.OK
+
+
+class _AsyncDownloader:
+    """Mixin class for asynchronous threads."""
+
+    async def _download_resource(self, session, link):
+        """Return the content of 'link' as bytes."""
+        resp = await session.get(link)
+        return await resp.read()
+
+
+class UpdateSpaceWeatherThread(BaseDownloadThread, _AsyncDownloader):
+    """Subclass BaseDownloadThread. Download the space weather data."""
+
+    _PROPERTIES = ("xray", "prot_el", "ak_index", "sgas", "geo_storm")
+
+    def __init__(self, space_weather_data):
+        """Initialize the a local space_weather_data."""
+        super().__init__()
+        self._space_weather_data = space_weather_data
+
+    async def _download_property(self, session, property_name):
+        """Download the data conteining the information of a specific property."""
+        link = getattr(Constants, "SPACE_WEATHER_" + property_name.upper())
+        data = await self._download_resource(session, link)
+        setattr(self._space_weather_data, property_name, str(data, 'utf-8'))
+
+    async def _download_image(self, session, n):
+        """Download the data corresponding the n-th image displayed in the screen."""
+        im = await self._download_resource(
+            session, Constants.SPACE_WEATHER_IMGS[n]
+        )
+        self._space_weather_data.images[n].loadFromData(im)
+
+    async def _download_resources(self):
+        """Download all the data."""
+        session = aiohttp.ClientSession()
+        try:
+            t = []
+            for p in self._PROPERTIES:
+                t.append(
+                    asyncio.create_task(self._download_property(session, p))
+                )
+
+            tot_images = range(len(Constants.SPACE_WEATHER_IMGS))
+            t1 = []
+            for im_number in tot_images:
+                t1.append(
+                    asyncio.create_task(
+                        self._download_image(session, im_number)
+                    )
+                )
+            await asyncio.gather(*t, *t1)
+        except Exception:
+            self.status = ThreadStatus.UNKNOWN_ERR
+        else:
+            self.status = ThreadStatus.OK
+        finally:
+            await session.close()
+
+    def run(self):
+        """Override QThread.run. Start the download of the data."""
+        self.status = ThreadStatus.UNDEFINED
+        asyncio.run(self._download_resources())
+
+
+class UpdateForecastThread(BaseDownloadThread, _AsyncDownloader):
+    """Subclass BaseDownloadThread. Download the forecast data."""
+
+    class _PropertyName(Enum):
+        """Enum used to differentiate between the two data needed."""
+        FORECAST = auto()
+        PROBABILITIES = auto()
+
+    def __init__(self, owner):
+        """Set the owner object (a ForecastData instance)."""
+        super().__init__()
+        self.owner = owner
+
+    async def _download_property(self, session, link, prop_name):
+        """Download the data from 'link' and set the corresponding property of the owner."""
+        resp = await self._download_resource(session, link)
+        resp = str(resp, 'utf-8')
+        if prop_name is self._PropertyName.FORECAST:
+            self.owner.forecast = resp
+        if prop_name is self._PropertyName.PROBABILITIES:
+            self.owner.probabilities = resp
+
+    async def _download_resources(self):
+        """Download all the data needed."""
+        session = aiohttp.ClientSession()
+        try:
+            await asyncio.gather(
+                asyncio.create_task(
+                    self._download_property(
+                        session,
+                        Constants.SPACE_WEATHER_GEO_STORM,
+                        self._PropertyName.FORECAST
+                    )
+                ),
+                asyncio.create_task(
+                    self._download_property(
+                        session,
+                        Constants.FORECAST_PROBABILITIES,
+                        self._PropertyName.PROBABILITIES
+                    )
+                )
+            )
+        except Exception:
+            self.status = ThreadStatus.UNKNOWN_ERR
+        else:
+            self.status = ThreadStatus.OK
+        finally:
+            await session.close()
+
+    def run(self):
+        """Override QThread.run. Start the data download."""
+        self.status = ThreadStatus.UNDEFINED
+        asyncio.run(self._download_resources())

src/utilities.py

@@ -0,0 +1,155 @@
+from functools import partial
+import hashlib
+import sys
+import os
+from pandas import read_csv
+
+from PyQt5.QtWidgets import QMessageBox
+
+from constants import Constants, Signal, Database, ChecksumWhat
+
+
+def resource_path(relative_path):
+    """Get absolute path to resource, works for dev and for PyInstaller."""
+    try:
+        base_path = sys._MEIPASS
+    except Exception:
+        base_path = os.path.abspath(".")
+    return os.path.join(base_path, relative_path)
+
+
+def uncheck_and_emit(button):
+    """Set the button to the unchecked state and emit the clicked signal."""
+    if button.isChecked():
+        button.setChecked(False)
+        button.clicked.emit()
+
+
+def pop_up(cls, title, text,
+           informative_text=None,
+           connection=None,
+           is_question=False,
+           default_btn=QMessageBox.Yes):
+    """Return a QMessageBox object.
+
+    Keyword arguments:
+    informative_text -- possible informative text to be displayed.
+    connection -- a callable to connect the message when emitting the finished signal.
+    is_question -- whether the message contains a question.
+    default_btn -- the default button for the possible answer to the question."""
+    msg = QMessageBox(cls)
+    msg.setWindowTitle(title)
+    msg.setText(text)
+    if informative_text:
+        msg.setInformativeText(informative_text)
+    if connection:
+        msg.finished.connect(connection)
+    if is_question:
+        msg.setStandardButtons(QMessageBox.Yes | QMessageBox.No)
+        msg.setDefaultButton(default_btn)
+    msg.adjustSize()
+    return msg
+
+
+def checksum_ok(data, what):
+    """Check whether the checksum of the 'data' argument is correct."""
+    code = hashlib.sha256()
+    code.update(data)
+    if what is ChecksumWhat.FOLDER:
+        n = 0
+    elif what is ChecksumWhat.DB:
+        n = 1
+    else:
+        raise ValueError("Wrong entry name.")
+    try:
+        reference = read_csv(
+            Database.LINK_REF,
+            delimiter=Database.DELIMITER
+        ).iat[-1, n]
+    except Exception:
+        raise
+    return code.hexdigest() == reference
+
+
+def connect_events_to_func(events_to_connect, fun_to_connect, fun_args):
+    """Connect all elements of events_to_connect to the callable fun_to_connect.
+
+    fun_args is a list of fun_to_connect arguments."""
+    if fun_args is not None:
+        for event in events_to_connect:
+            event.connect(partial(fun_to_connect, *fun_args))
+    else:
+        for event in events_to_connect:
+            event.connect(fun_to_connect)
+
+
+def filters_limit(spinbox, filter_unit, confidence, sign=1):
+    """Return the actual limit of a numerical filter."""
+    band_filter = spinbox.value() * Constants.CONVERSION_FACTORS[filter_unit.currentText()]
+    return band_filter + sign * (confidence.value() * band_filter) // 100
+
+
+def is_undef_freq(current_signal):
+    """Return whether the lower or upper frequency of a signal is undefined."""
+    lower_freq = current_signal.at[Signal.INF_FREQ]
+    upper_freq = current_signal.at[Signal.SUP_FREQ]
+    return lower_freq == Constants.UNKNOWN or upper_freq == Constants.UNKNOWN
+
+
+def is_undef_band(current_signal):
+    """Return whether the lower or upper band of a signal is undefined."""
+    lower_band = current_signal.at[Signal.INF_BAND]
+    upper_band = current_signal.at[Signal.SUP_BAND]
+    return lower_band == Constants.UNKNOWN or upper_band == Constants.UNKNOWN
+
+
+def _change_unit(str_num):
+    """Return a scale factor given the number of digits of a numeric string."""
+    digits = len(str_num)
+    if digits < 4:
+        return 1
+    elif digits < 7:
+        return 1000
+    elif digits < 10:
+        return 10**6
+    else:
+        return 10**9
+
+
+def format_numbers(lower, upper):
+    """Return the string which displays the numeric limits of a filter."""
+    units = {1: 'Hz', 1000: 'kHz', 10**6: 'MHz', 10**9: 'GHz'}
+    lower_factor = _change_unit(lower)
+    upper_factor = _change_unit(upper)
+    pre_lower = lower
+    pre_upper = upper
+    lower = safe_cast(lower, int) / lower_factor
+    upper = safe_cast(upper, int) / upper_factor
+    if lower.is_integer():
+        lower = int(lower)
+    else:
+        lower = round(lower, 2)
+    if upper.is_integer():
+        upper = int(upper)
+    else:
+        upper = round(upper, 2)
+    if pre_lower != pre_upper:
+        return f"{lower:,} {units[lower_factor]} - {upper:,} {units[upper_factor]}"
+    else:
+        return f"{lower:,} {units[lower_factor]}"
+
+
+def safe_cast(value, cast_type, default=-1):
+    """Call 'cast_type(value)' and return the result.
+
+    If the operation fails return 'default'.
+    Should be used to perform 'safe casts'.
+    Keyword argument:
+    default -- default value returned if the cast fails.
+    """
+    try:
+        r = cast_type(value)
+    except Exception:
+        r = default
+    finally:
+        return r

src/weatherdata.py

@@ -0,0 +1,353 @@
+import re
+from PyQt5.QtGui import QPixmap
+from PyQt5.QtCore import pyqtSlot, pyqtSignal, QObject
+from threads import (BaseDownloadThread,
+                     UpdateSpaceWeatherThread,
+                     ThreadStatus,
+                     UpdateForecastThread)
+from constants import Constants
+from switchable_label import MultiColorSwitchableLabel
+from utilities import safe_cast
+
+
+class _BaseWeatherData(QObject):
+    """Base class for the weather data. Extends QObject."""
+
+    update_complete = pyqtSignal(bool)
+
+    def __init__(self):
+        """Create a BaseDownloadThread object."""
+        super().__init__()
+        self._update_thread = BaseDownloadThread()
+
+    @property
+    def is_updating(self):
+        """Return whether the thread is running."""
+        return self._update_thread.isRunning()
+
+    def update(self):
+        """Start the thread."""
+        self._update_thread.start()
+
+    def _parse_data(self):
+        """Dummy function. Must be overrided by subclasses."""
+        pass
+
+    @pyqtSlot()
+    def _parse_and_emit_signal(self):
+        """Parse the data and emit an 'update_complete' signal.
+
+        If the download was not successful, do not parse the data.
+        The 'update_complete' signal propagates the thread status up to the
+        calling slot."""
+        status_ok = False
+        if self._update_thread.status is ThreadStatus.OK:
+            status_ok = True
+            self._parse_data()
+        self.update_complete.emit(status_ok)
+
+    def _double_split(self, string):
+        """Given a string, return a list of lists.
+
+        First split on each line. Then split each line on whitespaces."""
+        return [i.split() for i in string.splitlines()]
+
+    def shutdown_thread(self):
+        """Terminate the download thread."""
+        self._update_thread.terminate()
+        self._update_thread.wait()
+
+
+class SpaceWeatherData(_BaseWeatherData):
+    """Space weather class. Extends _BaseWeatherData."""
+
+    def __init__(self):
+        """Set all attributes and connect the thread to _parse_and_emit_signal."""
+        super().__init__()
+        self.xray = ''
+        self.prot_el = ''
+        self.ak_index = ''
+        self.sgas = ''
+        self.geo_storm = ''
+        self.images = [
+            QPixmap(),
+            QPixmap(),
+            QPixmap(),
+            QPixmap(),
+            QPixmap(),
+            QPixmap(),
+            QPixmap(),
+            QPixmap(),
+            QPixmap()
+        ]
+        self._update_thread = UpdateSpaceWeatherThread(self)
+        self._update_thread.finished.connect(self._parse_and_emit_signal)
+
+    def _parse_data(self):
+        """Override _BaseWeatherData._parse_data.
+
+        Set all the data."""
+        self.xray      = self._double_split(self.xray)
+        self.prot_el   = self._double_split(self.prot_el)
+        self.ak_index  = self._double_split(self.ak_index)
+        self.sgas      = self._double_split(self.sgas)
+        self.geo_storm = self._double_split(self.geo_storm)
+
+    def remove_data(self):
+        """Remove the reference to all the data."""
+        self.xray = ''
+        self.prot_el = ''
+        self.ak_index = ''
+        self.sgas = ''
+        self.geo_storm = ''
+        self.images = [
+            QPixmap(),
+            QPixmap(),
+            QPixmap(),
+            QPixmap(),
+            QPixmap(),
+            QPixmap(),
+            QPixmap(),
+            QPixmap(),
+            QPixmap()
+        ]
+
+
+def _make_labels_table(forecast, probabilities, rows):
+    """Organize all the arguments to feed _get_lbl_value."""
+    def get_first_split(x):
+        return x.split("/")[0]
+
+    def get_second_split(x):
+        return x.split("/")[1]
+
+    def get_third_split(x):
+        return x.split("/")[2]
+
+    solar_row = rows["solar_row"]
+    event_row = rows["event_row"]
+    rb_now_row = rows["rb_now_row"]
+    ga_now_row = rows["ga_now_row"]
+    kp_index_row = rows["kp_index_row"]
+    return [
+        [
+            [forecast, solar_row, 3, None],
+            [probabilities, event_row + 1, 2, get_first_split],
+            [probabilities, event_row + 2, 2, get_first_split],
+            [probabilities, event_row + 3, 1, get_first_split],
+            [forecast, rb_now_row, 1, None],
+            [forecast, rb_now_row + 1, 3, None],
+            [probabilities, ga_now_row + 2, 1, get_first_split],
+            [probabilities, ga_now_row + 3, 2, get_first_split],
+            [probabilities, ga_now_row + 4, 2, get_first_split],
+            [probabilities, ga_now_row + 6, 1, get_first_split],
+            [probabilities, ga_now_row + 7, 2, get_first_split],
+            [probabilities, ga_now_row + 8, 2, get_first_split],
+            [forecast, kp_index_row + 3, 1, None],
+            [forecast, kp_index_row + 4, 1, None],
+            [forecast, kp_index_row + 5, 1, None],
+            [forecast, kp_index_row + 6, 1, None],
+            [forecast, kp_index_row + 7, 1, None],
+            [forecast, kp_index_row + 8, 1, None],
+            [forecast, kp_index_row + 9, 1, None],
+            [forecast, kp_index_row + 10, 1, None]
+        ],
+        [
+            [forecast, solar_row, 4, None],
+            [probabilities, event_row + 1, 2, get_second_split],
+            [probabilities, event_row + 2, 2, get_second_split],
+            [probabilities, event_row + 3, 1, get_second_split],
+            [forecast, rb_now_row, 2, None],
+            [forecast, rb_now_row + 1, 4, None],
+            [probabilities, ga_now_row + 2, 1, get_second_split],
+            [probabilities, ga_now_row + 3, 2, get_second_split],
+            [probabilities, ga_now_row + 4, 2, get_second_split],
+            [probabilities, ga_now_row + 6, 1, get_second_split],
+            [probabilities, ga_now_row + 7, 2, get_second_split],
+            [probabilities, ga_now_row + 8, 2, get_second_split],
+            [forecast, kp_index_row + 3, 2, None],
+            [forecast, kp_index_row + 4, 2, None],
+            [forecast, kp_index_row + 5, 2, None],
+            [forecast, kp_index_row + 6, 2, None],
+            [forecast, kp_index_row + 7, 2, None],
+            [forecast, kp_index_row + 8, 2, None],
+            [forecast, kp_index_row + 9, 2, None],
+            [forecast, kp_index_row + 10, 2, None]
+        ],
+        [
+            [forecast, solar_row, 5, None],
+            [probabilities, event_row + 1, 2, get_third_split],
+            [probabilities, event_row + 2, 2, get_third_split],
+            [probabilities, event_row + 3, 1, get_third_split],
+            [forecast, rb_now_row, 3, None],
+            [forecast, rb_now_row + 1, 5, None],
+            [probabilities, ga_now_row + 2, 1, get_third_split],
+            [probabilities, ga_now_row + 3, 2, get_third_split],
+            [probabilities, ga_now_row + 4, 2, get_third_split],
+            [probabilities, ga_now_row + 6, 1, get_third_split],
+            [probabilities, ga_now_row + 7, 2, get_third_split],
+            [probabilities, ga_now_row + 8, 2, get_third_split],
+            [forecast, kp_index_row + 3, 3, None],
+            [forecast, kp_index_row + 4, 3, None],
+            [forecast, kp_index_row + 5, 3, None],
+            [forecast, kp_index_row + 6, 3, None],
+            [forecast, kp_index_row + 7, 3, None],
+            [forecast, kp_index_row + 8, 3, None],
+            [forecast, kp_index_row + 9, 3, None],
+            [forecast, kp_index_row + 10, 3, None]
+        ]
+    ]
+
+
+def _get_lbl_value(data, row, col, f=None):
+    """Return the well-formatted string-value of the label."""
+    val = data[row][col]
+    if f is not None:
+        val = f(val)
+    val = val.rstrip('%')
+    if len(val) > 1:
+        val = val.lstrip('0')
+    return val
+
+
+class ForecastData(_BaseWeatherData):
+    """3-day forecast class. Extends _BaseWeatherData."""
+
+    ROW_KEYWORDS = {
+        "solar_row": "S1 or greater",
+        "event_row": "III.  Event probabilities",
+        "rb_now_row": "R1-R2",
+        "ga_now_row": "Geomagnetic Activity Probabilities",
+        "kp_index_row": "NOAA Kp index breakdown"
+    }
+
+    LABELS_PER_COLUMN = 20
+
+    def __init__(self, owner):
+        """Initialize all attributes and connect the thread to _parse_and_emit_signal."""
+        super().__init__()
+        self.forecast = []
+        self.probabilities = []
+        self._update_thread = UpdateForecastThread(self)
+        self._update_thread.finished.connect(self._parse_and_emit_signal)
+        self._today_lbl = owner.today_lbl
+        self._today_p1_lbl = owner.today_p1_lbl
+        self._today_p2_lbl = owner.today_p2_lbl
+        today_lbls = []
+        today_p1_lbls = []
+        today_p2_lbls = []
+        flags = ['', 'p1_', 'p2_']
+        for flag in flags:
+            title_lbl = getattr(self, "_today_" + flag + "lbl")
+            title_lbl.setText("-")
+            for index in range(self.LABELS_PER_COLUMN):
+                label = getattr(
+                    owner,
+                    "forecast_today_" + flag + str(index) + "_lbl"
+                )
+                label.setText(Constants.UNKNOWN)
+                if flag == flags[0]:
+                    today_lbls.append(label)
+                if flag == flags[1]:
+                    today_p1_lbls.append(label)
+                if flag == flags[2]:
+                    today_p2_lbls.append(label)
+
+        self._all_lbls = [today_lbls, today_p1_lbls, today_p2_lbls]
+
+    def _parse_data(self):
+        """Override _BaseWeatherData._parse_data.
+
+        Set all the relevant data."""
+        # Remove possible '(G\d)' from the kp_index table
+        self.forecast = re.sub(
+            '\(G\d\)', lambda obj: '', self.forecast
+        )
+        self.forecast = self.forecast.splitlines()
+        self.probabilities = re.sub(
+            '\(G\d\)', lambda obj: '', self.probabilities
+        )
+        self.probabilities = self.probabilities.splitlines()
+
+    def _split_lists(self):
+        """Split the elements of forecast and probabilities."""
+        return [i.split() for i in self.forecast], [i.split() for i in self.probabilities]
+
+    def _find_row_with(self, data, text):
+        """Given a list of strings, return the index of the first string containing the target text."""
+        for i, row in enumerate(data):
+            if text in row:
+                return i
+        return None
+
+    def _get_rows(self):
+        """Get all the rows needed for updating the screen.
+
+        Raise an exception if something goes wrong."""
+
+        rows = {}
+        rows["solar_row"] = self._find_row_with(
+            self.forecast,
+            self.ROW_KEYWORDS["solar_row"]
+        )
+        rows["event_row"] = self._find_row_with(
+            self.probabilities,
+            self.ROW_KEYWORDS["event_row"]
+        )
+        rows["rb_now_row"] = self._find_row_with(
+            self.forecast,
+            self.ROW_KEYWORDS["rb_now_row"]
+        )
+        rows["ga_now_row"] = self._find_row_with(
+            self.probabilities,
+            self.ROW_KEYWORDS["ga_now_row"]
+        )
+        rows["kp_index_row"] = self._find_row_with(
+            self.forecast,
+            self.ROW_KEYWORDS["kp_index_row"]
+        )
+
+        if any(row is None for row in rows.values()):
+            raise Exception('Missing Rows')
+        else:
+            return rows
+
+    def _set_dates(self, forecast, solar_row):
+        """Set the date labels."""
+        month = forecast[solar_row - 1][0]
+        today = forecast[solar_row - 1][1]
+        today_p1 = forecast[solar_row - 1][3]
+        today_p2 = forecast[solar_row - 1][5]
+        self._today_lbl.setText(month + ' ' + today)
+        self._today_p1_lbl.setText(month + ' ' + today_p1)
+        self._today_p2_lbl.setText(month + ' ' + today_p2)
+
+    def _set_labels_values(self, labels_table):
+        """Set all the labels values."""
+        for lbl_list, table in zip(self._all_lbls, labels_table):
+            for lbl, row in zip(lbl_list, table):
+                lbl.switch_off()
+                value = _get_lbl_value(*row)
+                lbl.level = safe_cast(value, int)
+                if not isinstance(lbl, MultiColorSwitchableLabel):
+                    value += '%'
+                lbl.setText(value)
+                lbl.switch_on()
+
+    def update_all_labels(self):
+        """Update all the labels values.
+
+        If an exception is raised in the process, do nothing."""
+        try:
+            rows = self._get_rows()
+            forecast, probabilities = self._split_lists()
+            labels_table = _make_labels_table(forecast, probabilities, rows)
+            self._set_dates(forecast, rows["solar_row"])
+            self._set_labels_values(labels_table)
+        except Exception:
+            pass
+
+    def remove_data(self):
+        """Remove the reference to the downloaded data."""
+        self.forecast = []
+        self.probabilities = []