def __init__(self, data):
self.data = data
self.app = QApplication(sys.argv)
self.series = QtChart.QCandlestickSeries()
self.series.setDecreasingColor(Qt.red)
self.series.setIncreasingColor(Qt.green)
self.ma5 = qc.QLineSeries()
self.tm = []
for num, o, h, l, c, m in self.data:
self.series.append(QtChart.QCandlestickSet(o, h, l, c))
self.ma5.append(QPointF(num, m))
self.tm.append(str(num))
self.chart = QtChart.QChart()
self.chart.addSeries(self.series) # candle
self.chart.addSeries(self.ma5) # ma5 line
self.chart.createDefaultAxes()
self.chart.legend().hide()
self.chart.axisX(self.series).setCategories(self.tm)
self.chart.axisX(self.ma5).setVisible(False)
self.chartview = QtChart.QChartView(self.chart)
self.ui = QMainWindow()
self.ui.setGeometry(50, 50, 500, 300)
self.ui.setCentralWidget(self.chartview)
self.ui.show()
sys.exit(self.app.exec_())
def __init__(self, parent=None):
super().__init__(parent)
self.series = QtChart.QCandlestickSeries()
self.series.setUseOpenGL(True)
self.chart = QtChart.QChart()
self.chart.addSeries(self.series)
self.setChart(self.chart)
# x axis
self.x_scrolling = QtChart.QValueAxis() # x axis used for scrolling
self.x_scrolling.setTickType(QtChart.QValueAxis.TicksFixed)
self.x_scrolling.setLabelsVisible(False)
self.x_scrolling.setVisible(False)
self.chart.setAxisX(self.x_scrolling, self.series)
# y axis
self.y = QtChart.QValueAxis()
self.y.setTitleText("price")
self.chart.setAxisY(self.y, self.series)
self.chart.legend().hide()
self.chart.setTitle("BarData")
# visual control
self.days_to_show = 20
self.price_window_scale = 1.1
self.showing_index_end = 0 # 非正数表示数组最末尾的第n个，正数表示除了显示最新的数据以外还额外显示空白数据
self.indicator: Optional[Indicator] = None
self.crosshair_h: Optional[QGraphicsLineItem] = None
self.crosshair_v: Optional[QGraphicsLineItem] = None
self.indicator_index = None # index in self.showing_records
# config
self.x_zoom_scale_ratio = 0.5
self.max_padding_days = 3 # 最多显示的空白数据数量，也就是限制self.showing_index_end的最大值
self.y_label_count = 30
self.y_scale_threshold = 1.1
# status variables
self.dragging = False
self.dragging_info: Optional[DraggingInfo] = None
self.showing_records: List["InternalData"] = []
# data record(use model/view to reduce memory if necessary)
self.datas: List["InternalData"] = []
# intermediate variables to speed up calculation
self.y_range = 1 # used in redraw_indicator
self.y_min = 1 # used in redraw_indicator
self.y_max = 1 # used in redraw_indicator
# redraw
self.redraw_lock = Lock()
self.redraw_scheduled = False
self.redraw_y_lock = Lock()
self.redraw_y_scheduled = False
def __init__(self):
super(CandleChart, self).__init__()
# set margins, colors and font
self.setBackgroundBrush(QtGui.QBrush(QtGui.QColor(0, 0, 0)))
self.setBackgroundRoundness(0)
self.layout().setContentsMargins(0, 0, 0, 0)
self.setMargins(QtCore.QMargins(0, 0, 0, 0))
self.legend().hide()
chartFont = QtGui.QFont(self.font())
chartFont.setPixelSize(9)
self.setFont(chartFont)
self.candlestickSeries = QtChart.QCandlestickSeries()
self.candlestickSeries.setIncreasingColor(QtCore.Qt.black)
self.candlestickSeries.setDecreasingColor(QtCore.Qt.red)
self.addSeries(self.candlestickSeries)
# add hover line and price tag
self.setAcceptHoverEvents(True)
self.hoverLinePriceTag = QtWidgets.QGraphicsSimpleTextItem(self)
self.hoverLinePriceTag.setBrush(
QtGui.QBrush(QtGui.QColor(255, 255, 255)))
self.hoverLinePriceTag.setOpacity(1.0)
self.hoverLine = QtChart.QLineSeries()
hoverPen = QtGui.QPen(QtCore.Qt.DashLine)
hoverPen.setColor(QtCore.Qt.white)
hoverPen.setWidthF(0.5)
hoverPen.setDashPattern([5, 10])
self.hoverLine.setPen(hoverPen)
self.hoverLineAxisX = QtChart.QValueAxis()
self.hoverLineAxisX.hide()
self.hoverLineAxisX.setRange(0, 1)
self.addSeries(self.hoverLine)
self.addAxis(self.hoverLineAxisX, QtCore.Qt.AlignBottom)
self.hoverLine.attachAxis(self.hoverLineAxisX)
