Python PyQt5.QtCore.Qt.white() Examples

def _updateAutoForegroundColForeground(self, row):
        item = self.item(row, self._autoForegroundCol)
        if item is None: return

        try:
            value = float(item.data(self._role))
        except Exception as ex:
            value = 0 # if referenced item doesn't have value or not number, think it as default 0.

        if value > 0:
            color = Qt.red
        elif value < 0:
            color = Qt.darkGreen
        else:
            if item.background() == Qt.white: # for qdarkstyle
                color = Qt.black
            else:
                color = QColor('#C0C0C0')

        item.setForeground(color) 

def createSpectrumLine(self):
        if not self.spectrum24Line:
            # add it
            
            # 2.4 GHz
            self.spectrum24Line = self.createNewSeries(Qt.white, self.chart24)
            self.spectrum24Line.setName('Spectrum')
            
            self.chart24.addSeries(self.spectrum24Line)
            self.spectrum24Line.attachAxis(self.chart24.axisX())
            self.spectrum24Line.attachAxis(self.chart24.axisY())

        if not self.spectrum5Line:
            # 5 GHz
            self.spectrum5Line = self.createNewSeries(Qt.white, self.chart5)
            self.spectrum5Line.setName('Spectrum')
            
            self.chart5.addSeries(self.spectrum5Line)
            self.spectrum5Line.attachAxis(self.chart5.axisX())
            self.spectrum5Line.attachAxis(self.chart5.axisY())
            # self.spectrum5Line.setUseOpenGL(True) # This causes the entire window to go blank 

def paintEvent(self, event):
        super(Label, self).paintEvent(event)
        # 中正间画十字
        painter = QPainter(self)
        painter.setPen(Qt.red)
        x = int(self.width() / 2)
        y = int(self.height() / 2)
        painter.drawLine(x, 0, x, self.height())
        painter.drawLine(0, y, self.width(), y)
        if self.ismd:
            # 画坐标点
            pos = QCursor.pos()
            ret = win32gui.GetPixel(win32gui.GetWindowDC(
                win32gui.GetDesktopWindow()), pos.x(), pos.y())
            r, g, b = ret & 0xff, (ret >> 8) & 0xff, (ret >> 16) & 0xff
            print(r, g, b)
            painter.setPen(Qt.white)
            painter.drawText(self.rect(), Qt.AlignLeft |
                             Qt.AlignBottom, '({}, {})\nRGB: ({}, {}, {})\n{}'.format(
                                 pos.x(), pos.y(), r, g, b, QColor(r, g, b).name())) 

def __init__(self, displayText, parent, textColor=Qt.white):
        # super().__init__(displayText, parent)
        super().__init__(parent=parent)
        self.textColor = textColor
        self.chartParent = parent
        
        # Pen draws the outline, brush does the character fill
        # The doc says the pen is slow so don't use it unless you have to
        # penBorder = QPen(self.textColor)
        # penBorder.setWidth(2)
        # self.setPen(penBorder)

        newBrush = QBrush(self.textColor)
        self.setBrush(newBrush)
        
    # Has setText() and text() methods 

def __init__(self, parentChart, color=Qt.white):
        super().__init__()
        self.textColor = color
        self.parentChart = parentChart
        
        self.hovered.connect(self.onHover)
        self.callout = Callout(self.name(), parentChart, self.textColor)

        self.callout.setZValue(100)
        self.clicked.connect(self.onClicked)

        self.labelTimer = QTimer()
        self.labelTimerTimeout = 3000
        self.labelTimer.timeout.connect(self.onLabelTimer)
        self.labelTimer.setSingleShot(True)
        self.timerRunning = False 

def __init__(self):
        super(VideoStyleDark, self).__init__()
        palette = qApp.palette()
        palette.setColor(QPalette.Window, QColor(27, 35, 38))
        palette.setColor(QPalette.WindowText, QColor(234, 234, 234))
        palette.setColor(QPalette.Base, QColor(27, 35, 38))
        palette.setColor(QPalette.AlternateBase, QColor(12, 15, 16))
        palette.setColor(QPalette.ToolTipBase, QColor(27, 35, 38))
        palette.setColor(QPalette.ToolTipText, Qt.white)
        palette.setColor(QPalette.Text, QColor(234, 234, 234))
        palette.setColor(QPalette.Button, QColor(27, 35, 38))
        palette.setColor(QPalette.ButtonText, Qt.white)
        palette.setColor(QPalette.BrightText, QColor(100, 215, 222))
        palette.setColor(QPalette.Link, QColor(126, 71, 130))
        # palette.setColor(QPalette.Highlight, QColor(126, 71, 130))
        # palette.setColor(QPalette.HighlightedText, Qt.white)
        palette.setColor(QPalette.Disabled, QPalette.Light, Qt.black)
        palette.setColor(QPalette.Disabled, QPalette.Shadow, QColor(12, 15, 16))
        qApp.setPalette(palette) 

def paintEvent(self, event):
        super(ScaleWindow, self).paintEvent(event)
        if self._image:
            painter = QPainter(self)
            painter.setRenderHint(QPainter.Antialiasing, True)
            path = QPainterPath()
            radius = min(self.width(), self.height()) / 2
            path.addRoundedRect(QRectF(self.rect()), radius, radius)
            painter.setClipPath(path)
            # 图片
            painter.drawImage(self.rect(), self._image)
            # 中间蓝色十字线
            painter.setPen(QPen(QColor(0, 174, 255), 3))
            hw = self.width() / 2
            hh = self.height() / 2
            painter.drawLines(
                QLineF(hw, 0, hw, self.height()),
                QLineF(0, hh, self.width(), hh)
            )
            # 边框
            painter.setPen(QPen(Qt.white, 3))
            painter.drawRoundedRect(self.rect(), radius, radius) 

def _getForeground(self, rowData, autoForegroundCol, item):

        # 如果@rowData的item个数小于等于@autoForegroundCol
        # 支持row数据比header少的状况
        try:
            value = rowData[autoForegroundCol]

            color = self.getForegroundOverride(value)
        except Exception as ex:
            color = None
        
        if color is None:
            if item.background() == Qt.white:
                color = Qt.black

            else: # for qdarkstyle
                color = QColor(192, 192, 192)
            
        return color 

def _updateAutoForegroundColForeground(self, row):
        item = self.item(row, self._autoForegroundCol)
        if item is None: return

        try:
            value = float(item.data(self._role))
        except Exception as ex:
            value = 0 # if referenced item doesn't have value or not number, think it as default 0.

        if value > 0:
            color = Qt.red
        elif value < 0:
            color = Qt.darkGreen
        else:
            if item.background() == Qt.white: # for qdarkstyle
                color = Qt.black
            else:
                color = QColor('#C0C0C0')

        item.setForeground(color) 

def _getForeground(self, rowData, autoForegroundCol, item):

        # 如果@rowData的item个数小于等于@autoForegroundCol
        # 支持row数据比header少的状况
        try:
            value = rowData[autoForegroundCol]

            color = self.getForegroundOverride(value)
        except Exception as ex:
            color = None
        
        if color is None:
            if item.background() == Qt.white:
                color = Qt.black

            else: # for qdarkstyle
                color = QColor(192, 192, 192)
            
        return color 

def paintEvent(self, event):
        ancho, altura = self.width(), self.height()
        icono = self.icono.scaled(ancho, altura, Qt.KeepAspectRatio, Qt.SmoothTransformation)

        pintor = QPainter()
        
        pintor.begin(self)
        pintor.setRenderHint(QPainter.Antialiasing, True)
        pintor.setPen(Qt.NoPen)
        pintor.drawPixmap(0, 0, icono, 0, 0, 0, 0)
        pintor.setPen(Qt.white)
        pintor.drawText(event.rect(), Qt.AlignCenter, self.etiqueta)
        pintor.setPen(Qt.NoPen)
        pintor.setBrush(self.opacidad)
        pintor.drawEllipse(0, 0, ancho, altura)
        pintor.end()

        self.setMask(icono.mask()) 

def paint_status(self):
        a_offs = 20
        base_x = self.rect_x + self.get_pixel_qty_per_line() * self.pixelSize + a_offs + 10

        lines = []
        lines.append("[Data]")
        lines.append(" Type: %s" % self.formatters[self.cur_formatter_idx][1])
        lines.append(" Mode: %s" % self.composition_modes[self.cur_compos_mode][1])

        cur_line = 1
        text_x_pos = base_x + 10
        self.qp.setPen(QColor(Qt.white))
        for line in lines:
            text_y_pos = self.rect().height() - (self.qp.fontMetrics().height()/2) - (len(lines) - cur_line) * (self.qp.fontMetrics().height())

            # draw status
            self.qp.drawText(text_x_pos,
                text_y_pos,
                line)
            cur_line += 1

    # functions that can be called by filters
    # must no be called from within on_process_buffer() 

def __init__(self):
        QtWidgets.QWidget.__init__(self)
        uic.loadUi("window.ui", self)
        self.scene = QtWidgets.QGraphicsScene(0, 0, 511, 511)
        self.mainview.setScene(self.scene)
        self.image = QImage(511, 511, QImage.Format_ARGB32_Premultiplied)
        self.pen = QPen()
        self.color_line = QColor(Qt.black)
        self.color_bground = QColor(Qt.white)
        self.draw_once.clicked.connect(lambda: draw_once(self))
        self.clean_all.clicked.connect(lambda: clear_all(self))
        self.btn_bground.clicked.connect(lambda: get_color_bground(self))
        self.btn_line.clicked.connect(lambda: get_color_line(self))
        self.draw_centr.clicked.connect(lambda: draw_centr(self))
        layout = QtWidgets.QHBoxLayout()
        layout.addWidget(self.what)
        layout.addWidget(self.other)
        self.setLayout(layout)
        self.circle.setChecked(True)
        self.canon.setChecked(True)
        #self.circle.toggled.connect(lambda : change_text(self)) 

def __init__(self):
        QtWidgets.QWidget.__init__(self)
        uic.loadUi("window.ui", self)
        self.scene = Scene(0, 0, 561, 581)
        self.scene.win = self
        self.view.setScene(self.scene)
        self.image = QImage(561, 581, QImage.Format_ARGB32_Premultiplied)
        self.image.fill(Qt.white)
        self.bars.clicked.connect(lambda : set_bars(self))
        self.erase.clicked.connect(lambda: clean_all(self))
        self.paint.clicked.connect(lambda: clipping(self))
        self.rect.clicked.connect(lambda: set_rect(self))
        self.ect.clicked.connect(lambda: add_bars(self))
        self.lock.clicked.connect(lambda: lock(self))
        self.lines = []
        self.edges = []
        self.clip = None
        self.point_now_rect = None
        self.point_now_bars = None
        self.point_lock = None
        self.input_bars = False
        self.input_rect = False
        self.pen = QPen(black) 

def __init__(self):
        QtWidgets.QWidget.__init__(self)
        uic.loadUi("window.ui", self)
        self.scene = Scene(0, 0, 561, 581)
        self.scene.win = self
        self.view.setScene(self.scene)
        self.image = QImage(561, 581, QImage.Format_ARGB32_Premultiplied)
        self.image.fill(Qt.white)
        self.bars.clicked.connect(lambda : set_bars(self))
        self.erase.clicked.connect(lambda: clean_all(self))
        self.paint.clicked.connect(lambda: clipping(self))
        self.rect.clicked.connect(lambda: set_rect(self))
        self.ect.clicked.connect(lambda: add_bars(self))
        self.lines = []
        self.clip = None
        self.point_now = None
        self.input_bars = False
        self.input_rect = False
        self.pen = QPen(red) 

def get_color_bground(win):
    color = QtWidgets.QColorDialog.getColor(initial=Qt.white, title='Цвет фона',
                                            options=QtWidgets.QColorDialog.DontUseNativeDialog)
    if color.isValid():
        win.color_bground = color
        win.image.fill(color)
        s = QtWidgets.QGraphicsScene(0, 0, 10, 10)
        s.setBackgroundBrush(color)
        win.bground_color.setScene(s)
        win.scene.setBackgroundBrush(color) 

def __init__(self):
        QtWidgets.QWidget.__init__(self)
        uic.loadUi("window.ui", self)
        self.scene = QtWidgets.QGraphicsScene(0, 0, 511, 511)
        self.mainview.setScene(self.scene)
        self.image = QImage(511, 511, QImage.Format_ARGB32_Premultiplied)
        self.pen = QPen()
        self.color_line = QColor(Qt.black)
        self.color_bground = QColor(Qt.white)
        self.draw_line.clicked.connect(lambda: draw_line(self))
        self.clean_all.clicked.connect(lambda : clear_all(self))
        self.btn_bground.clicked.connect(lambda: get_color_bground(self))
        self.btn_line.clicked.connect(lambda: get_color_line(self))
        self.draw_sun.clicked.connect(lambda: draw_sun(self))
        self.cda.setChecked(True) 

def _drawSkel(self, worm_qimg, skel_dat, skel_colors = GOOD_SKEL_COLOURS):

        qPlg = {}
        for tt, dat in skel_dat.items():
            qPlg[tt] = QPolygonF()
            for p in dat:
                #do not add point if it is nan
                if p[0] == p[0]: 
                    qPlg[tt].append(QPointF(*p))


        if not qPlg or len(qPlg['skeleton']) == 0:
            return

        pen = QPen()
        pen.setWidth(1)

        painter = QPainter()
        painter.begin(worm_qimg)

        for k, pol_v in qPlg.items():
            color = skel_colors[k]
            pen.setColor(QColor(*color))
            painter.setPen(pen)
            painter.drawPolyline(pol_v)

        pen.setColor(Qt.black)
        painter.setBrush(Qt.white)
        painter.setPen(pen)

        radius = 3
        painter.drawEllipse(qPlg['skeleton'][0], radius, radius)
        painter.drawEllipse(QPointF(0,0), radius, radius)

        painter.end() 

def __init__(self, ui):
        super().__init__(ui)

        self.food_coordinates = None
        self.wlabC = {
            WLAB['U']: Qt.white,
            WLAB['WORM']: Qt.green,
            WLAB['WORMS']: Qt.blue,
            WLAB['BAD']: Qt.darkRed,
            WLAB['GOOD_SKE']: Qt.darkCyan
            } 
        self.ui.checkBox_showFood.stateChanged.connect(self.updateImage)
        self.ui.checkBox_showFood.setEnabled(False)
        self.ui.checkBox_showFood.setChecked(True) 

def showMessage(self, msg):
        """Show the progress message on the splash image"""
        super(SplashScreen, self).showMessage(msg, self.labelAlignment, Qt.white)
        QApplication.processEvents() 

def paintEvent(self, event):
        super(CoverLabel, self).paintEvent(event)
        if hasattr(self, "cover_title") and self.cover_title != "":
            # 底部绘制文字
            painter = QPainter(self)
            rect = self.rect()
            # 粗略字体高度
            painter.save()
            fheight = self.fontMetrics().height()
            # 底部矩形框背景渐变颜色
            bottomRectColor = QLinearGradient(
                rect.width() / 2, rect.height() - 24 - fheight,
                rect.width() / 2, rect.height())
            bottomRectColor.setSpread(QGradient.PadSpread)
            bottomRectColor.setColorAt(0, QColor(255, 255, 255, 70))
            bottomRectColor.setColorAt(1, QColor(0, 0, 0, 50))
            # 画半透明渐变矩形框
            painter.setPen(Qt.NoPen)
            painter.setBrush(QBrush(bottomRectColor))
            painter.drawRect(rect.x(), rect.height() - 24 -
                             fheight, rect.width(), 24 + fheight)
            painter.restore()
            # 距离底部一定高度画文字
            font = self.font() or QFont()
            font.setPointSize(8)
            painter.setFont(font)
            painter.setPen(Qt.white)
            rect.setHeight(rect.height() - 12)  # 底部减去一定高度
            painter.drawText(rect, Qt.AlignHCenter |
                             Qt.AlignBottom, self.cover_title) 

def paintEvent(self, event):
        super(CoverLabel, self).paintEvent(event)
        if hasattr(self, "cover_title") and self.cover_title != "":
            # 底部绘制文字
            painter = QPainter(self)
            rect = self.rect()
            # 粗略字体高度
            painter.save()
            fheight = self.fontMetrics().height()
            # 底部矩形框背景渐变颜色
            bottomRectColor = QLinearGradient(
                rect.width() / 2, rect.height() - 24 - fheight,
                rect.width() / 2, rect.height())
            bottomRectColor.setSpread(QGradient.PadSpread)
            bottomRectColor.setColorAt(0, QColor(255, 255, 255, 70))
            bottomRectColor.setColorAt(1, QColor(0, 0, 0, 50))
            # 画半透明渐变矩形框
            painter.setPen(Qt.NoPen)
            painter.setBrush(QBrush(bottomRectColor))
            painter.drawRect(rect.x(), rect.height() - 24 -
                             fheight, rect.width(), 24 + fheight)
            painter.restore()
            # 距离底部一定高度画文字
            font = self.font() or QFont()
            font.setPointSize(8)
            painter.setFont(font)
            painter.setPen(Qt.white)
            rect.setHeight(rect.height() - 12)  # 底部减去一定高度
            painter.drawText(rect, Qt.AlignHCenter |
                             Qt.AlignBottom, self.cover_title) 

def __getColor(self, color=None, default=Qt.white):
        '''
        :param color: int|str|[r,g,b]|[r,g,b,a]
        '''
        if not color:
            return QColor(default)
        if isinstance(color, QBrush):
            return color
        # 比如[r,g,b]或[r,g,b,a]
        if isinstance(color, list) and 3 <= len(color) <= 4:
            return QColor(*color)
        else:
            return QColor(color) 

def data(self,index,role):
        if index.isValid():
            key = self._row_to_key[index.row()]
            if role == Qt.DisplayRole:
                if self.key is None:
                    return key
                else:
                    return self.nativedata[key][self.key]
            elif role == Qt.ForegroundRole:
                return QtGui.QBrush(Qt.black)
            elif role == Qt.BackgroundRole:
                return QtGui.QBrush(QtGui.QColor(self.nativedata[key].get('color',Qt.white)))
            elif role == Qt.CheckStateRole:
                return self._checkstate.get(key,Qt.CheckState.Unchecked) 

def __getPen(self, pen=None, default=QPen(
            Qt.white, 1, Qt.SolidLine,
            Qt.SquareCap, Qt.BevelJoin)):
        '''
        :param pen: pen json
        '''
        if not pen or not isinstance(pen, dict):
            return default
        return QPen(
            self.__getColor(pen.get("color", None) or default.color()),
            pen.get("width", 1) or 1,
            pen.get("style", 0) or 0,
            pen.get("capStyle", 16) or 16,
            pen.get("joinStyle", 64) or 64
        ) 

def paintEvent(self, event):
        painter = QPainter(self)
        painter.setRenderHint(QPainter.Antialiasing)
        # 背景白色
        painter.fillRect(event.rect(), QBrush(Qt.white))
        # 绘制边缘虚线框
        painter.setPen(Qt.DashLine)
        painter.setBrush(Qt.NoBrush)
        painter.drawRect(self.rect())
        # 随机画条线
        for _ in range(3):
            painter.setPen(QPen(QTCOLORLIST[qrand() % 5], 1, Qt.SolidLine))
            painter.setBrush(Qt.NoBrush)
            painter.drawLine(QPoint(0, qrand() % self.height()),
                             QPoint(self.width(), qrand() % self.height()))
            painter.drawLine(QPoint(qrand() % self.width(), 0),
                             QPoint(qrand() % self.width(), self.height()))
        # 绘制噪点
        painter.setPen(Qt.DotLine)
        painter.setBrush(Qt.NoBrush)
        for _ in range(self.width()):  # 绘制噪点
            painter.drawPoint(QPointF(qrand() % self.width(), qrand() % self.height()))
        # super(WidgetCode, self).paintEvent(event)  # 绘制文字
        # 绘制跳动文字
        metrics = QFontMetrics(self.font())
        x = (self.width() - metrics.width(self.text())) / 2
        y = (self.height() + metrics.ascent() - metrics.descent()) / 2
        for i, ch in enumerate(self.text()):
            index = (self.step + i) % 16
            painter.setPen(TCOLORLIST[qrand() % 6])
            painter.drawText(x, y - ((SINETABLE[index] * metrics.height()) / 400), ch)
            x += metrics.width(ch) 

def createWindow():
        app.w = QWidget()
        # 模拟初始5秒后再显示
        splash.showMessage('等待界面显示', Qt.AlignHCenter | Qt.AlignBottom, Qt.white)
        QTimer.singleShot(3000, lambda: (
            splash.showMessage('初始化完成', Qt.AlignHCenter | Qt.AlignBottom, Qt.white), app.w.show(),
            splash.finish(app.w)))


    # 模拟耗时5秒。但是不能用sleep
    # 可以使用子线程加载耗时的数据
    # 主线程中循环设置UI可以配合QApplication.instance().processEvents() 

def paintEvent(self, event):
        super(CoverLabel, self).paintEvent(event)
        if hasattr(self, "cover_title") and self.cover_title != "":
            # 底部绘制文字
            painter = QPainter(self)
            rect = self.rect()
            # 粗略字体高度
            painter.save()
            fheight = self.fontMetrics().height()
            # 底部矩形框背景渐变颜色
            bottomRectColor = QLinearGradient(
                rect.width() / 2, rect.height() - 24 - fheight,
                rect.width() / 2, rect.height())
            bottomRectColor.setSpread(QGradient.PadSpread)
            bottomRectColor.setColorAt(0, QColor(255, 255, 255, 70))
            bottomRectColor.setColorAt(1, QColor(0, 0, 0, 50))
            # 画半透明渐变矩形框
            painter.setPen(Qt.NoPen)
            painter.setBrush(QBrush(bottomRectColor))
            painter.drawRect(rect.x(), rect.height() - 24 -
                             fheight, rect.width(), 24 + fheight)
            painter.restore()
            # 距离底部一定高度画文字
            font = self.font() or QFont()
            font.setPointSize(8)
            painter.setFont(font)
            painter.setPen(Qt.white)
            rect.setHeight(rect.height() - 12)  # 底部减去一定高度
            painter.drawText(rect, Qt.AlignHCenter |
                             Qt.AlignBottom, self.cover_title) 

def __init__(self, border, width, box_size):
        self.border = border
        self.width = width
        self.box_size = box_size
        size = (width + border * 2) * box_size
        self._image = QImage(
            size, size, QImage.Format_RGB16)
        self._image.fill(Qt.white) 

def _setAutoRowForeground(self, item):
        if self._autoForegroundCol is None:
            return

        # ignore 'Org.' column
        if self.__index and item.column() == 0:
            return

        # get forground of reference item
        row = item.row()

        refItem = self.item(row, self._autoForegroundCol)

        if not refItem:
            return

        # set forground same as reference item
        item.setForeground(refItem.foreground())

        # we still need to go through row if value of reference item changed
        if item.column() == self._autoForegroundCol:
            # get foreground for row
            color = self.getForegroundOverride(item.data(self._role))
            if color is None:
                if item.background() == Qt.white: # for qdarkstyle
                    color = Qt.black
                else:
                    color = Qt.white

            # no foreground changed
            if item.foreground() == color:
                return

            for i in range(self.columnCount()):
                if self.__index and i == 0: continue

                item = self.item(row, i)
                if item:
                    item.setForeground(color)