Python PyQt5.QtGui.QWidget() Examples

def mouseMoveEvent(self, event):
        if self.show_rubberband is True:
            if self.rubberband.isVisible():
                pos = self.frame.mapFrom(self, event.pos())
                # todo: limit size
                self.rubberband.setGeometry(QtCore.QRect(self.origin, pos).normalized())
        else:
            if event.buttons() == QtCore.Qt.LeftButton:
                self.imageLabel.move(event.x() - self.dragX, event.y() - self.dragY)
            elif event.buttons() == QtCore.Qt.RightButton:
                if hasattr(self, "posval"):
                    xoff = self.central.x() + self.frame.x()
                    yoff = self.central.y() + self.frame.y()
                    x = event.x() - xoff
                    y = event.y() - yoff
                    txt = self.getPosVal(x, y)
                    self.posval.setText(txt)
                    self.posval.adjustSize()
        QtWidgets.QWidget.mouseMoveEvent(self, event) 

def tabbed_qt4_window(self):
        from PyQt4 import QtGui
        from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg, NavigationToolbar2QT
        # mpl backend can already create instance
        # https://stackoverflow.com/a/40031190
        app = QtGui.QApplication.instance()
        if app is None:
            app = QtGui.QApplication([self.title])
        self.root_window = QtGui.QTabWidget()
        self.root_window.setWindowTitle(self.title)
        for name, fig in self.figures.items():
            tab = QtGui.QWidget(self.root_window)
            tab.canvas = FigureCanvasQTAgg(fig)
            vbox = QtGui.QVBoxLayout(tab)
            vbox.addWidget(tab.canvas)
            toolbar = NavigationToolbar2QT(tab.canvas, tab)
            vbox.addWidget(toolbar)
            tab.setLayout(vbox)
            for axes in fig.get_axes():
                if isinstance(axes, Axes3D):
                    # must explicitly allow mouse dragging for 3D plots
                    axes.mouse_init()
            self.root_window.addTab(tab, name)
        self.root_window.show()
        app.exec_() 

def tabbed_qt5_window(self):
        from PyQt5 import QtGui, QtWidgets
        from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg, NavigationToolbar2QT
        # mpl backend can already create instance
        # https://stackoverflow.com/a/40031190
        app = QtGui.QGuiApplication.instance()
        if app is None:
            app = QtWidgets.QApplication([self.title])
        self.root_window = QtWidgets.QTabWidget()
        self.root_window.setWindowTitle(self.title)
        for name, fig in self.figures.items():
            tab = QtWidgets.QWidget(self.root_window)
            tab.canvas = FigureCanvasQTAgg(fig)
            vbox = QtWidgets.QVBoxLayout(tab)
            vbox.addWidget(tab.canvas)
            toolbar = NavigationToolbar2QT(tab.canvas, tab)
            vbox.addWidget(toolbar)
            tab.setLayout(vbox)
            for axes in fig.get_axes():
                if isinstance(axes, Axes3D):
                    # must explicitly allow mouse dragging for 3D plots
                    axes.mouse_init()
            self.root_window.addTab(tab, name)
        self.root_window.show()
        app.exec_() 

def tabbed_qt4_window(self):
        from PyQt4 import QtGui
        from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg, NavigationToolbar2QT
        # mpl backend can already create instance
        # https://stackoverflow.com/a/40031190
        app = QtGui.QApplication.instance()
        if app is None:
            app = QtGui.QApplication([self.title])
        self.root_window = QtGui.QTabWidget()
        self.root_window.setWindowTitle(self.title)
        for name, fig in self.figures.items():
            tab = QtGui.QWidget(self.root_window)
            tab.canvas = FigureCanvasQTAgg(fig)
            vbox = QtGui.QVBoxLayout(tab)
            vbox.addWidget(tab.canvas)
            toolbar = NavigationToolbar2QT(tab.canvas, tab)
            vbox.addWidget(toolbar)
            tab.setLayout(vbox)
            for axes in fig.get_axes():
                if isinstance(axes, Axes3D):
                    # must explicitly allow mouse dragging for 3D plots
                    axes.mouse_init()
            self.root_window.addTab(tab, name)
        self.root_window.show()
        app.exec_() 

def init_external_tab_ui(self):
        """External data."""
        self.external_tab = QtGui.QWidget()
        self.external_tab.setEnabled(False)
        self.external_layout = QtGui.QVBoxLayout(self.external_tab)

        self.import_data_name = QtGui.QLabel('Import External Data')
        self.import_data_label = QtGui.QLabel('...')
        self.import_data_btn = QtGui.QPushButton('Import')
        self.import_data_btn.clicked.connect(self.open_file)

        self.external_layout.addWidget(
            self.import_data_name, 0, QtCore.Qt.AlignCenter
        )
        self.external_layout.addWidget(
            self.import_data_label, 0, QtCore.Qt.AlignCenter
        )
        self.external_layout.addWidget(
            self.import_data_btn, 0, QtCore.Qt.AlignCenter
        )

        self.select_source.addTab(self.external_tab, 'Custom data') 

def tabbed_qt5_window(self):
        from PyQt5 import QtGui, QtWidgets
        from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg, NavigationToolbar2QT
        # mpl backend can already create instance
        # https://stackoverflow.com/a/40031190
        app = QtGui.QGuiApplication.instance()
        if app is None:
            app = QtWidgets.QApplication([self.title])
        self.root_window = QtWidgets.QTabWidget()
        self.root_window.setWindowTitle(self.title)
        for name, fig in self.figures.items():
            tab = QtWidgets.QWidget(self.root_window)
            tab.canvas = FigureCanvasQTAgg(fig)
            vbox = QtWidgets.QVBoxLayout(tab)
            vbox.addWidget(tab.canvas)
            toolbar = NavigationToolbar2QT(tab.canvas, tab)
            vbox.addWidget(toolbar)
            tab.setLayout(vbox)
            for axes in fig.get_axes():
                if isinstance(axes, Axes3D):
                    # must explicitly allow mouse dragging for 3D plots
                    axes.mouse_init()
            self.root_window.addTab(tab, name)
        self.root_window.show()
        app.exec_() 

def __init__(self, parent=None):
        super(RunWindow, self).__init__(parent)
        self.setGeometry(10,10,1500,900)
        self.setWindowTitle('Choose run options (hold mouse over parameters to see descriptions)')
        self.parent = parent
        self.win = QtGui.QWidget(self)
        self.layout = QtGui.QGridLayout()
        self.layout.setVerticalSpacing(2)
        self.layout.setHorizontalSpacing(25)
        self.win.setLayout(self.layout)
        # initial ops values
        self.opsfile = parent.opsuser
        try:
            self.reset_ops()
            print('loaded default ops')
        except Exception as e:
            print('ERROR: %s'%e)
            print('could not load default ops, using built-in ops settings')
            self.ops = run_s2p.default_ops()

        # remove any remaining ops files
        fs = glob.glob('ops*.npy')
        for f in fs:
            os.remove(f)
        fs = glob.glob('db*.npy')
        for f in fs:
            os.remove(f)

        self.data_path = []
        self.save_path = []
        self.fast_disk = []
        self.opslist = []
        self.batch = False
        self.f = 0
        self.create_buttons() 

def mousePressEvent(self, event):
        if self.show_rubberband is True:
            # self.origin = event.pos()
            self.origin = self.frame.mapFrom(self, event.pos())
            self.rubberband.setGeometry(QtCore.QRect(self.origin, QtCore.QSize()))
            self.rubberband.show()
        else:
            if event.button() == QtCore.Qt.RightButton and self.current is not None:
                xoff = self.central.x() + self.frame.x()  # easier with self.frame.mapFrom()
                yoff = self.central.y() + self.frame.y()
                x = event.x() - xoff
                y = event.y() - yoff
                txt = self.getPosVal(x, y)
                if hasattr(self, "posval"):
                    self.posval.setText(txt)
                    self.posval.adjustSize()
                    self.posval.show()
                else:
                    self.posval = QtWidgets.QLabel(txt)
                    self.posval.setWindowFlags(QtCore.Qt.WindowStaysOnTopHint)
                    self.posval.setWindowTitle("position / value")
                    self.posval.setGeometry(self.x() + xoff, self.y() + yoff, 200, 100)
                    self.posval.adjustSize()
                    self.posval.show()
            else:
                self.dragX = event.x()
                self.dragY = event.y()

        QtWidgets.QWidget.mousePressEvent(self, event) 

def __init__(self, parent = None):
        QtGui.QWidget.__init__(self, parent)
        self.canvas = PlotCanvas()
        self.vbl = QtGui.QVBoxLayout()
        self.vbl.addWidget(self.canvas)
        self.setLayout(self.vbl) 

def __init__(self, nAxes, parent = None):
        QtGui.QWidget.__init__(self, parent)
        self.canvas = OverlapCanvas(nAxes)
        self.vbl = QtGui.QVBoxLayout()
        self.vbl.addWidget(self.canvas)
        self.setLayout(self.vbl) 

def init_shares_tab_ui(self):
        """Shares."""
        self.shares_tab = QtGui.QWidget()
        self.shares_layout = QtGui.QFormLayout(self.shares_tab)
        today = datetime.today()

        self.shares_date_from = QtGui.QDateEdit()
        self.shares_date_from.setMinimumDate(QtCore.QDate(1900, 1, 1))
        self.shares_date_from.setMaximumDate(QtCore.QDate(2030, 12, 31))
        self.shares_date_from.setDate(QtCore.QDate(today.year, 1, 1))
        self.shares_date_from.setDisplayFormat('dd.MM.yyyy')

        self.shares_date_to = QtGui.QDateEdit()
        self.shares_date_to.setMinimumDate(QtCore.QDate(1900, 1, 1))
        self.shares_date_to.setMaximumDate(QtCore.QDate(2030, 12, 31))
        self.shares_date_to.setDate(
            QtCore.QDate(today.year, today.month, today.day)
        )
        self.shares_date_to.setDisplayFormat('dd.MM.yyyy')

        self.shares_symbol_list = QtGui.QComboBox()
        self.shares_symbol_list.setFocusPolicy(QtCore.Qt.StrongFocus)
        self.shares_symbol_list.setMaxVisibleItems(20)
        self.shares_symbol_list.setEditable(True)

        self.shares_show_btn = QtGui.QPushButton('Load')
        self.shares_show_btn.clicked.connect(self.update_data)

        self.shares_layout.addRow('From', self.shares_date_from)
        self.shares_layout.addRow('To', self.shares_date_to)
        self.shares_layout.addRow('Symbol', self.shares_symbol_list)
        self.shares_layout.addRow(None, self.shares_show_btn)

        self.select_source.addTab(self.shares_tab, 'Shares/Futures/ETFs') 

def __init__(self, Text, parent=None):
        super(ListChooser, self).__init__(parent)
        self.setGeometry(300,300,500,320)
        self.setWindowTitle(Text)
        self.win = QtGui.QWidget(self)
        layout = QtGui.QGridLayout()
        self.win.setLayout(layout)
        #self.setCentralWidget(self.win)
        loadcell = QtGui.QPushButton('Load iscell.npy')
        loadcell.resize(200,50)
        loadcell.clicked.connect(self.load_cell)
        layout.addWidget(loadcell,0,0,1,1)
        loadtext = QtGui.QPushButton('Load txt file list')
        loadtext.clicked.connect(self.load_text)
        layout.addWidget(loadtext,0,1,1,1)
        layout.addWidget(QtGui.QLabel('(select multiple using ctrl)'),1,0,1,1)
        self.list = QtGui.QListWidget(parent)
        layout.addWidget(self.list,2,0,5,4)
        #self.list.resize(450,250)
        self.list.setSelectionMode(QtGui.QAbstractItemView.MultiSelection)
        save = QtGui.QPushButton('build classifier')
        save.clicked.connect(lambda: self.build_classifier(parent))
        layout.addWidget(save,8,0,1,1)
        self.apply = QtGui.QPushButton('load in GUI')
        self.apply.clicked.connect(lambda: self.apply_class(parent))
        self.apply.setEnabled(False)
        layout.addWidget(self.apply,8,1,1,1)
        self.saveasdefault = QtGui.QPushButton('save as default')
        self.saveasdefault.clicked.connect(lambda: self.save_default(parent))
        self.saveasdefault.setEnabled(False)
        layout.addWidget(self.saveasdefault,8,2,1,1)
        done = QtGui.QPushButton('close')
        done.clicked.connect(self.exit_list)
        layout.addWidget(done,8,3,1,1) 

def __init__(self,parent=None):
        super(TextChooser, self).__init__(parent)
        self.setGeometry(300,300,180,100)
        self.setWindowTitle('h5 key')
        self.win = QtGui.QWidget(self)
        layout = QtGui.QGridLayout()
        self.win.setLayout(layout)
        self.qedit = QtGui.QLineEdit('data')
        layout.addWidget(QtGui.QLabel('h5 key for data field'),0,0,1,3)
        layout.addWidget(self.qedit,1,0,1,2)
        done = QtGui.QPushButton('OK')
        done.clicked.connect(self.exit_list)
        layout.addWidget(done,2,1,1,1) 

def _init_footer(self, parent):
        """

        Parameters
        ----------
        parent : QtGui.QWidget
            The widget / dialog that will host the footer layout

        Returns
        -------
            The footer layout created
        """
        ctrl_layout = QtWidgets.QHBoxLayout()

        if sys.platform.lower() == 'darwin':
            cmd_key = 'Cmd'
        else:
            cmd_key = 'Ctrl'

        self.btn_ok = QtWidgets.QPushButton('Save and Quit [%s+S]' % cmd_key)
        self.btn_undo = QtWidgets.QPushButton('Undo [%s+Z]' % cmd_key)

        ctrl_layout.addStretch()
        ctrl_layout.addWidget(self.btn_undo)
        ctrl_layout.addWidget(self.btn_ok)

        self.btn_undo.clicked.connect(self.on_undo)
        self.btn_ok.clicked.connect(self.on_save_quit)

        parent.addLayout(ctrl_layout)
        return ctrl_layout 

def _init_controls(self, parent):
        """

        Parameters
        ----------
        parent : QtGui.QWidget
            The widget / dialog that will host the control layout

        """
        raise NotImplementedError('Include _init_controls in your class declaration') 

def _init_canvas(self, parent):
        """

        Parameters
        ----------
        parent : QtGui.QWidget
            The widget / dialog that will host the canvas layout
        """
        raise NotImplementedError('Include _init_canvas in your class declaration') 

def setup_ui(self, parent_ui):
    self.parent_ui = parent_ui
    dock = parent_ui.ui.knitting_options_dock
    self.qwidget = QtGui.QWidget(dock)
    self.configure_button = QtGui.QPushButton(self.qwidget)
    self.configure_button.setObjectName(_fromUtf8("configure_button"))
    self.configure_button.setText(_translate("DockWidget", "Configure", None))
    self.configure_button.clicked.connect(self.__conf_button_function)
    dock.setWidget(self.qwidget) 

def get_QWidget():
    """QWidget getter."""

    try:
        import PySide.QtGui as QtGui
        return QtGui.QWidget
    except ImportError:
        import PyQt5.QtWidgets as QtWidgets
        return QtWidgets.QWidget 

def cleanup_ui(self, parent_ui):
    self.parent_ui = parent_ui
    dock = parent_ui.ui.knitting_options_dock
    cleaner = QtCore.QObjectCleanupHandler()
    cleaner.add(self.qwidget)
    self.__qw = QtGui.QWidget()
    dock.setWidget(self.__qw) 

def __init__(self, horizontal=True, parent=None, decimals=3, step=.005,
                 slider_exponent=1):
        QtGui.QWidget.__init__(self, parent)
        self.vmin = None
        self.vmax = None
        self.slider_exponent = slider_exponent
        self.decimals = decimals
        self.step = 100
        self.valueLen = 2
        self.suffix = None
        self._value = None

        self.spin = QtGui.QDoubleSpinBox()
        self.spin.setDecimals(decimals)
        self.spin.setSingleStep(step)
        self.spin.valueChanged.connect(self._spin_updated)
        self.spin.setFrame(False)

        self.slider = QtGui.QSlider(
            QtCore.Qt.Orientation(1 if horizontal else 0), self)  # 1 = hor.
        self.slider.setTickPosition(
            QtGui.QSlider.TicksAbove if horizontal
            else QtGui.QSlider.TicksLeft)
        self.slider.setRange(0, 99)
        self.slider.sliderMoved.connect(self._slider_updated)

        layout = QtGui.QHBoxLayout() if horizontal else QtGui.QVBoxLayout()
        self.setLayout(layout)
        layout.addWidget(self.slider)
        layout.addWidget(self.spin) 

def __init__(self, parent_plot):
        QtGui.QWidget.__init__(self)
        self.parent_plot = parent_plot
        self.model = parent_plot.model

        self.plot = pg.PlotWidget(background='default')
        self.plot.showGrid(True, True, alpha=.5)
        self.plot.setMenuEnabled(True)
        self.plot.enableAutoRange()

        self.layout = QtGui.QVBoxLayout(self)
        self.layout.addWidget(self.plot) 

def cleanup_ui(self, parent_ui):
    """Cleans up UI elements inside knitting option dock."""
    #dock = parent_ui.knitting_options_dock
    dock = self.dock
    cleaner = QtCore.QObjectCleanupHandler()
    cleaner.add(dock.widget())
    self.__qw = QtGui.QWidget()
    dock.setWidget(self.__qw)
    self.unset_translator() 

def get_qgis_app():
    """ Start one QGIS application to test against.

    :returns: Handle to QGIS app, canvas, iface and parent. If there are any
        errors the tuple members will be returned as None.
    :rtype: (QgsApplication, CANVAS, IFACE, PARENT)

    If QGIS is already running the handle to that app will be returned.
    """

    try:
        from PyQt5 import QtGui, QtCore
        from qgis.core import QgsApplication
        from qgis.gui import QgsMapCanvas
        from .qgis_interface import QgisInterface
    except ImportError:
        return None, None, None, None

    global QGIS_APP  # pylint: disable=W0603

    if QGIS_APP is None:
        gui_flag = True  # All test will run qgis in gui mode
        #noinspection PyPep8Naming
        QGIS_APP = QgsApplication(sys.argv, gui_flag)
        # Make sure QGIS_PREFIX_PATH is set in your env if needed!
        QGIS_APP.initQgis()
        s = QGIS_APP.showSettings()
        LOGGER.debug(s)

    global PARENT  # pylint: disable=W0603
    if PARENT is None:
        #noinspection PyPep8Naming
        PARENT = QtGui.QWidget()

    global CANVAS  # pylint: disable=W0603
    if CANVAS is None:
        #noinspection PyPep8Naming
        CANVAS = QgsMapCanvas(PARENT)
        CANVAS.resize(QtCore.QSize(400, 400))

    global IFACE  # pylint: disable=W0603
    if IFACE is None:
        # QgisInterface is a stub implementation of the QGIS plugin interface
        #noinspection PyPep8Naming
        IFACE = QgisInterface(CANVAS)

    return QGIS_APP, CANVAS, IFACE, PARENT 

def makeView(self):
        # self.central = QtGui.QWidget()
        # self.HLayout = QtGui.QHBoxLayout(self.central)
        self.central = QtWidgets.QSplitter(self)
        self.central.setOpaqueResize(False)
        self.central.setSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)

        self.tree = LayerWidget(self)
        # self.tree.setFixedWidth(200)
        # self.tree.setSizePolicy(QtGui.QSizePolicy.Fixed, QtGui.QSizePolicy.Expanding)
        self.central.addWidget(self.tree)

        # self.HLayout.addItem(self.spacer)

        self.frame = QtWidgets.QWidget()
        # self.frame = DelayedUpdater()

        self.frame.setSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
        self.imageLabel = QtWidgets.QLabel(self.frame)
        self.imageLabel.setBackgroundRole(QtGui.QPalette.Base)
        self.imageLabel.setStyleSheet("QLabel { background-color: #333 }")
        self.imageLabel.setSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
        self.imageLabel.setScaledContents(False)
        self.imageLabel.setAlignment(QtCore.Qt.AlignCenter)
        self.imageLabel.resize(self.frame.width(), self.frame.height())
        self.central.addWidget(self.frame)

        self.setCentralWidget(self.central)

        self.resizeframeevent = self.frame.resizeEvent
        self.frame.resizeEvent = self.resizeFrameEvent  # a bit dirtyt to overload like this...

        # self.central.move.connect(lambda: self.splitterMoved())

        # self.frame = QtGui.QWidget()
        # self.imageLabel = QtGui.QLabel(self.frame)
        # self.imageLabel.setBackgroundRole(QtGui.QPalette.Base)
        # self.imageLabel.setStyleSheet("QLabel { background-color: #333 }")
        # self.imageLabel.setSizePolicy(QtGui.QSizePolicy.Ignored, QtGui.QSizePolicy.Ignored)
        # self.imageLabel.setScaledContents(False)
        # self.imageLabel.resize(self.frame.width(), self.frame.height())
        # self.setCentralWidget(self.frame)

    # def split(self, event):
    #     # QtGui.QWidget.resizeEvent(self.frame, event)
    #     # self.central.update()
    #     self.resizeEvent(event)
    #     # self.central.update()
    #     print("Event", self.frame.width(), self.frame.height()) 

def __init__(self, parent=None):
        super(MergeWindow, self).__init__(parent)
        self.setGeometry(700,300,700,700)
        self.setWindowTitle('Choose merge options')
        self.cwidget = QtGui.QWidget(self)
        self.layout = QtGui.QGridLayout()
        self.layout.setVerticalSpacing(2)
        self.layout.setHorizontalSpacing(25)
        self.cwidget.setLayout(self.layout)
        self.win = pg.GraphicsLayoutWidget()
        self.layout.addWidget(self.win, 11, 0, 4, 4)
        self.p0 = self.win.addPlot(row=0, col=0)
        self.p0.setMouseEnabled(x=False,y=False)
        self.p0.enableAutoRange(x=True,y=True)
        # initial ops values
        mkeys = ['corr_thres', 'dist_thres']
        mlabels = ['correlation threshold', 'euclidean distance threshold']
        self.ops = {'corr_thres': 0.8, 'dist_thres': 100.0}
        self.layout.addWidget(QtGui.QLabel('Press enter in a text box to update params'), 0, 0, 1,2)
        self.layout.addWidget(QtGui.QLabel('(Correlations use "activity mode" and "bin" from main GUI)'), 1, 0, 1,2)
        self.layout.addWidget(QtGui.QLabel('>>>>>>>>>>>> Parameters <<<<<<<<<<<'), 2, 0, 1,2)
        self.doMerge = QtGui.QPushButton('merge selected ROIs', default=False, autoDefault=False)
        self.doMerge.clicked.connect(lambda: self.do_merge(parent))
        self.doMerge.setEnabled(False)
        self.layout.addWidget(self.doMerge, 9,0,1,1)

        self.suggestMerge = QtGui.QPushButton('next merge suggestion', default=False, autoDefault=False)
        self.suggestMerge.clicked.connect(lambda: self.suggest_merge(parent))
        self.suggestMerge.setEnabled(False)
        self.layout.addWidget(self.suggestMerge, 10,0,1,1)

        self.nMerge = QtGui.QLabel('= X possible merges found with these parameters')
        self.layout.addWidget(self.nMerge, 7,0,1,2)

        self.iMerge = QtGui.QLabel('suggested ROIs to merge: ')
        self.layout.addWidget(self.iMerge, 8,0,1,2)

        self.editlist = []
        self.keylist = []
        k=1
        for lkey,llabel in zip(mkeys, mlabels):
            qlabel = QtGui.QLabel(llabel)
            qlabel.setFont(QtGui.QFont("Times",weight=QtGui.QFont.Bold))
            self.layout.addWidget(qlabel, k*2+1,0,1,2)
            qedit = LineEdit(lkey,self)
            qedit.set_text(self.ops)
            qedit.setFixedWidth(90)
            qedit.returnPressed.connect(lambda: self.compute_merge_list(parent))
            self.layout.addWidget(qedit, k*2+2,0,1,2)
            self.editlist.append(qedit)
            self.keylist.append(lkey)
            k+=1

        print('creating merge window... this may take some time')
        self.CC  = np.matmul(parent.Fbin[parent.iscell], parent.Fbin[parent.iscell].T) / parent.Fbin.shape[-1]
        self.CC /= np.matmul(parent.Fstd[parent.iscell][:,np.newaxis],
                             parent.Fstd[parent.iscell][np.newaxis,:]) + 1e-3
        self.CC -= np.diag(np.diag(self.CC))

        self.compute_merge_list(parent) 

def __init__(self, parent=None):
        super(SolidDistribution, self).__init__(parent)
        self.setWindowTitle(QtWidgets.QApplication.translate(
            "pychemqt", "Generate solid distribution"))
        self.matriz = []

        layout = QtWidgets.QGridLayout(self)
        layout.addWidget(QtWidgets.QLabel(QtWidgets.QApplication.translate(
            "pychemqt", "Model")), 0, 0)
        self.modelo = QtWidgets.QComboBox()
        layout.addWidget(self.modelo, 0, 1)
        self.stacked = QtWidgets.QStackedWidget()
        self.modelo.currentIndexChanged.connect(self.stacked.setCurrentIndex)
        layout.addWidget(self.stacked, 1, 0, 1, 2)

        layout.addWidget(QtWidgets.QLabel(QtWidgets.QApplication.translate(
            "pychemqt", "Standards:")), 2, 0, 1, 1)
        self.standard = QtWidgets.QComboBox()
        self.standard.addItem("Tyler")
        self.standard.addItem("ASTM")
        self.standard.addItem("DIN")
        self.standard.addItem("BS")
        self.standard.addItem("AFNOR")
        self.standard.addItem("ISO")
        self.standard.addItem(QtWidgets.QApplication.translate("pychemqt", "Custom"))
        self.standard.currentIndexChanged[str].connect(self.standardCambiado)
        layout.addWidget(self.standard, 2, 1, 1, 1)

        self.diametros = QtWidgets.QLineEdit()
        layout.addWidget(self.diametros, 3, 1, 1, 2)

        layout.addItem(QtWidgets.QSpacerItem(20, 20, QtWidgets.QSizePolicy.Expanding,
                                         QtWidgets.QSizePolicy.Expanding), 4, 1, 1, 3)
        self.buttonBox = QtWidgets.QDialogButtonBox(QtWidgets.QDialogButtonBox.Cancel |
                                                QtWidgets.QDialogButtonBox.Ok)
        self.buttonBox.rejected.connect(self.reject)
        self.buttonBox.accepted.connect(self.aceptar)
        layout.addWidget(self.buttonBox, 5, 0, 1, 2)

        self.entries = {}
        for key in ("Rosin Rammler Sperling", "Gates Gaudin Schumann",
                    "Broadbent Callcott", "Gaudin Meloy", "Lognormal", "Harris"):
            widget = QtWidgets.QWidget()
            self.modelo.addItem(key)
            lyt = QtWidgets.QGridLayout(widget)
            for i, label in enumerate(self.model[key]["title"]):
                lyt.addWidget(QtWidgets.QLabel(label), i, 1)
            self.entries[key] = []
            for i, unit in enumerate(self.model[key]["unit"]):
                entry = Entrada_con_unidades(unit, self.model[key]["magnitud"][i])
                self.entries[key].append(entry)
                lyt.addWidget(entry, i, 2)
            lyt.addItem(QtWidgets.QSpacerItem(0, 0, QtWidgets.QSizePolicy.Expanding,
                                          QtWidgets.QSizePolicy.Expanding), i+1, 1)
            self.stacked.addWidget(widget)

        self.standardCambiado("Tyler") 

def __init__(self, parent=None):
        """Create a new QRangeSlider instance.

            :param parent: QWidget parent
            :return: New QRangeSlider instance.

        """
        super().__init__(parent)
        self.setupUi(self)
        self.setMouseTracking(False)

        # self._splitter.setChildrenCollapsible(False)
        self._splitter.splitterMoved.connect(self._handleMoveSplitter)

        # head layout
        self._head_layout = QtWidgets.QHBoxLayout()
        self._head_layout.setSpacing(0)
        # self._head_layout.setMargin(0)
        self._head.setLayout(self._head_layout)
        self.head = Head(self._head, main=self)
        self._head_layout.addWidget(self.head)

        # handle layout
        self._handle_layout = QtWidgets.QHBoxLayout()
        self._handle_layout.setSpacing(0)
        # self._handle_layout.setMargin(0)
        self._handle.setLayout(self._handle_layout)
        self.handle = Handle(self._handle, main=self)
        self.handle.setTextColor((150, 255, 150))
        self._handle_layout.addWidget(self.handle)

        # tail layout
        self._tail_layout = QtWidgets.QHBoxLayout()
        self._tail_layout.setSpacing(0)
        # self._tail_layout.setMargin(0)
        self._tail.setLayout(self._tail_layout)
        self.tail = Tail(self._tail, main=self)
        self._tail_layout.addWidget(self.tail)

        self._formatter = None

        # defaults
        self.setMin(0)
        self.setMax(99)
        self.setStart(0)
        self.setEnd(99)
        self.setDrawValues(True) 

def get_qgis_app():
    """ Start one QGIS application to test against.

    :returns: Handle to QGIS app, canvas, iface and parent. If there are any
        errors the tuple members will be returned as None.
    :rtype: (QgsApplication, CANVAS, IFACE, PARENT)

    If QGIS is already running the handle to that app will be returned.
    """

    try:
        from PyQt5 import QtGui, QtCore
        from qgis.core import QgsApplication
        from qgis.gui import QgsMapCanvas
        from .qgis_interface import QgisInterface
    except ImportError:
        return None, None, None, None

    global QGIS_APP  # pylint: disable=W0603

    if QGIS_APP is None:
        gui_flag = True  # All test will run qgis in gui mode
        # noinspection PyPep8Naming
        QGIS_APP = QgsApplication(sys.argv, gui_flag)
        # Make sure QGIS_PREFIX_PATH is set in your env if needed!
        QGIS_APP.initQgis()
        s = QGIS_APP.showSettings()
        LOGGER.debug(s)

    global PARENT  # pylint: disable=W0603
    if PARENT is None:
        # noinspection PyPep8Naming
        PARENT = QtGui.QWidget()

    global CANVAS  # pylint: disable=W0603
    if CANVAS is None:
        # noinspection PyPep8Naming
        CANVAS = QgsMapCanvas(PARENT)
        CANVAS.resize(QtCore.QSize(400, 400))

    global IFACE  # pylint: disable=W0603
    if IFACE is None:
        # QgisInterface is a stub implementation of the QGIS plugin interface
        # noinspection PyPep8Naming
        IFACE = QgisInterface(CANVAS)

    return QGIS_APP, CANVAS, IFACE, PARENT