class QmyMainWindow(QMainWindow):
def __init__(self, parent=None):
super().__init__(parent) #调用父类构造函数，创建窗体
self.ui=Ui_MainWindow() #创建UI对象
self.ui.setupUi(self) #构造UI界面
self.setWindowTitle("Demo12_2, QChart绘制折线图")
self.setCentralWidget(self.ui.splitter)
self.__chart=None #图表
self.__curSeries=None #当前序列
self.__curAxis=None #当前坐标轴
self.__createChart()
self.__prepareData()
self.__updateFromChart()
## ==============自定义功能函数========================
def __createChart(self):
self.__chart = QChart()
self.__chart.setTitle("简单函数曲线")
self.ui.chartView.setChart(self.__chart)
self.ui.chartView.setRenderHint(QPainter.Antialiasing)
series0 = QLineSeries()
series0.setName("Sin曲线")
series1 = QLineSeries()
series1.setName("Cos曲线")
self.__curSeries=series0 #当前序列
pen=QPen(Qt.red)
pen.setStyle(Qt.DotLine) #SolidLine, DashLine, DotLine, DashDotLine
pen.setWidth(2)
series0.setPen(pen) #序列的线条设置
pen.setStyle(Qt.SolidLine) #SolidLine, DashLine, DotLine, DashDotLine
pen.setColor(Qt.blue)
series1.setPen(pen) #序列的线条设置
self.__chart.addSeries(series0)
self.__chart.addSeries(series1)
axisX = QValueAxis()
self.__curAxis=axisX #当前坐标轴
axisX.setRange(0, 10) #设置坐标轴范围
axisX.setLabelFormat("%.1f") #标签格式
axisX.setTickCount(11) #主分隔个数
axisX.setMinorTickCount(4)
axisX.setTitleText("time(secs)") #标题
axisX.setGridLineVisible(True)
axisX.setMinorGridLineVisible(False)
axisY = QValueAxis()
axisY.setRange(-2, 2)
axisY.setLabelFormat("%.2f") #标签格式
axisY.setTickCount(5)
axisY.setMinorTickCount(4)
axisY.setTitleText("value")
axisY.setGridLineVisible(True)
axisY.setMinorGridLineVisible(False)
## self.__chart.setAxisX(axisX, series0) #添加X坐标轴
## self.__chart.setAxisX(axisX, series1) #添加X坐标轴
## self.__chart.setAxisY(axisY, series0) #添加Y坐标轴
## self.__chart.setAxisY(axisY, series1) #添加Y坐标轴
##另一种实现设置坐标轴的方法
self.__chart.addAxis(axisX,Qt.AlignBottom) #坐标轴添加到图表，并指定方向
self.__chart.addAxis(axisY,Qt.AlignLeft)
series0.attachAxis(axisX) #序列 series0 附加坐标轴
series0.attachAxis(axisY)
series1.attachAxis(axisX) #序列 series1 附加坐标轴
series1.attachAxis(axisY)
def __prepareData(self): ##为序列设置数据点
chart=self.ui.chartView.chart() #获取chartView中的QChart对象
series0=chart.series()[0] #获取第1个序列，QLineSeries
series0.clear()
series1=chart.series()[1] #获取第2个序列，QLineSeries
series1.clear()
t,y1,y2=0.0,0.0,0.0
intv=0.1
pointCount=100
for i in range(pointCount):
rd=random.randint(-5,5) #随机数,-5~+5
y1=math.sin(t)+rd/50.0
series0.append(t,y1) #序列添加数据点
rd=random.randint(-5,5) #随机数,-5~+5
y2=math.cos(t)+rd/50.0
series1.append(t,y2) #序列添加数据点
t=t+intv
def __updateFromChart(self):
self.ui.editTitle.setText(self.__chart.title()) #图表标题
mg=self.__chart.margins() #边距, QMargins
self.ui.spinMarginLeft.setValue(mg.left())
self.ui.spinMarginRight.setValue(mg.right())
self.ui.spinMarginTop.setValue(mg.top())
self.ui.spinMarginBottom.setValue(mg.bottom())
## ==============event处理函数==========================
## ==========由connectSlotsByName()自动连接的槽函数============
##========工具栏上的几个按钮的Actions==============
@pyqtSlot() ## "刷新绘图" 工具栏按钮
def on_actDraw_triggered(self):
self.__prepareData()
##=====ToolBox 第1组：==="图表设置" 分组里的功能================
##=======1.1 标题========
@pyqtSlot() ##设置标题文字
def on_btnTitleSetText_clicked(self):
text=self.ui.editTitle.text()
self.__chart.setTitle(text)
@pyqtSlot() ##设置标题文字颜色
def on_btnTitleColor_clicked(self):
color=self.__chart.titleBrush().color()
color=QColorDialog.getColor(color)
if color.isValid():
self.__chart.setTitleBrush(QBrush(color))
@pyqtSlot() ##设置标题字体
def on_btnTitleFont_clicked(self):
iniFont=self.__chart.titleFont() #QFont
font,ok=QFontDialog.getFont(iniFont)
if ok:
self.__chart.setTitleFont(font)
##=======1.2 图例==========
@pyqtSlot(bool) ##图例是否可见
def on_groupBox_Legend_clicked(self,checked):
self.__chart.legend().setVisible(checked)
@pyqtSlot() ##图例的位置, 上
def on_radioButton_clicked(self):
self.__chart.legend().setAlignment(Qt.AlignTop)
@pyqtSlot() ##图例的位置，下
def on_radioButton_2_clicked(self):
self.__chart.legend().setAlignment(Qt.AlignBottom)
@pyqtSlot() ##图例的位置，左
def on_radioButton_3_clicked(self):
self.__chart.legend().setAlignment(Qt.AlignLeft)
@pyqtSlot() ##图例的位置，右
def on_radioButton_4_clicked(self):
self.__chart.legend().setAlignment(Qt.AlignRight)
@pyqtSlot() ##图例的文字颜色
def on_btnLegendlabelColor_clicked(self):
color=self.__chart.legend().labelColor()
color=QColorDialog.getColor(color)
if color.isValid():
self.__chart.legend().setLabelColor(color)
@pyqtSlot() ##图例的字体
def on_btnLegendFont_clicked(self):
iniFont=self.__chart.legend().font()
font,ok=QFontDialog.getFont(iniFont)
if ok:
self.__chart.legend().setFont(font)
##=======1.3 边距========
@pyqtSlot() ##设置图表的4个边距
def on_btnSetMargin_clicked(self):
mgs=QMargins()
mgs.setLeft(self.ui.spinMarginLeft.value())
mgs.setRight(self.ui.spinMarginRight.value())
mgs.setTop(self.ui.spinMarginTop.value())
mgs.setBottom(self.ui.spinMarginBottom.value())
self.__chart.setMargins(mgs)
##=======1.4 动画效果========
@pyqtSlot(int) ##动画效果
def on_comboAnimation_currentIndexChanged(self,index):
animation=QChart.AnimationOptions(index)
self.__chart.setAnimationOptions(animation)
@pyqtSlot(int) ##图表的主题
def on_comboTheme_currentIndexChanged(self,index):
self.__chart.setTheme(QChart.ChartTheme(index))
##=====ToolBox 第2组：==="曲线设置" 分组里的功能================
##=======2.1 选择操作序列========
@pyqtSlot() ##获取当前数据序列,sin
def on_radioSeries0_clicked(self):
if self.ui.radioSeries0.isChecked():
self.__curSeries=self.__chart.series()[0]
else:
self.__curSeries=self.__chart.series()[1]
##获取序列的属性值，并显示到界面上
self.ui.editSeriesName.setText(self.__curSeries.name())
self.ui.groupBox_Series.setChecked(self.__curSeries.isVisible()) #序列是否显示
self.ui.chkBoxPointVisible.setChecked(self.__curSeries.pointsVisible()) #数据点是否显示
self.ui.chkkBoxUseOpenGL.setChecked(self.__curSeries.useOpenGL()) #使用openGL
self.ui.sliderOpacity.setValue(self.__curSeries.opacity()*10) #透明度
visible=self.__curSeries.pointLabelsVisible() #数据点标签可见性
self.ui.groupBox_PointLabel.setChecked(visible)
@pyqtSlot() ##获取当前数据序列,cos
def on_radioSeries1_clicked(self):
self.on_radioSeries0_clicked()
##======2.2 序列曲线 设置========
@pyqtSlot(bool) ##序列是否可见
def on_groupBox_Series_clicked(self,checked):
self.__curSeries.setVisible(checked)
@pyqtSlot() ##设置序列名称
def on_btnSeriesName_clicked(self):
seriesName=self.ui.editSeriesName.text()
self.__curSeries.setName(seriesName)
if self.ui.radioSeries0.isChecked():
self.ui.radioSeries0.setText(seriesName)
else:
self.ui.radioSeries1.setText(seriesName)
@pyqtSlot() ##序列的曲线颜色
def on_btnSeriesColor_clicked(self):
color=self.__curSeries.color()
color=QColorDialog.getColor(color)
if color.isValid():
self.__curSeries.setColor(color)
@pyqtSlot() ##序列曲线的Pen设置
def on_btnSeriesPen_clicked(self):
iniPen=self.__curSeries.pen()
pen,ok=QmyDialogPen.staticGetPen(iniPen)
if ok:
self.__curSeries.setPen(pen)
@pyqtSlot(bool) ##序列的数据点是否可见,数据点形状是固定的
def on_chkBoxPointVisible_clicked(self,checked):
self.__curSeries.setPointsVisible(checked)
@pyqtSlot(bool) ##使用openGL加速后，不能设置线型，不能显示数据点
def on_chkkBoxUseOpenGL_clicked(self,checked):
self.__curSeries.setUseOpenGL(checked)
@pyqtSlot(int) ##序列的透明度
def on_sliderOpacity_sliderMoved(self,position):
self.__curSeries.setOpacity(position/10.0)
##=======2.3 数据点标签 ========
@pyqtSlot(bool) ##数据点标签 groupBox
def on_groupBox_PointLabel_clicked(self,checked):
self.__curSeries.setPointLabelsVisible(checked)
@pyqtSlot() ##序列数据点标签颜色
def on_btnSeriesLabColor_clicked(self):
color=self.__curSeries.pointLabelsColor()
color=QColorDialog.getColor(color)
if color.isValid():
self.__curSeries.setPointLabelsColor(color)
@pyqtSlot() ##序列数据点标签字体
def on_btnSeriesLabFont_clicked(self):
font=self.__curSeries.pointLabelsFont() #QFont
font,ok=QFontDialog.getFont(font)
if ok:
self.__curSeries.setPointLabelsFont(font)
@pyqtSlot() ##序列数据点标签的显示格式
def on_radioSeriesLabFormat0_clicked(self):
self.__curSeries.setPointLabelsFormat("@yPoint")
@pyqtSlot() ##序列数据点标签的显示格式
def on_radioSeriesLabFormat1_clicked(self):
self.__curSeries.setPointLabelsFormat("(@xPoint,@yPoint)")
##=====ToolBox 第3组：==="坐标轴设置" 分组里的功能================
##=======3.1 选择操作的坐标轴对象=======
@pyqtSlot() ##选择坐标轴X
def on_radioAxisX_clicked(self):
if (self.ui.radioAxisX.isChecked()):
self.__curAxis=self.ui.chartView.chart().axisX() #QValueAxis
else:
self.__curAxis=self.ui.chartView.chart().axisY()
##获取坐标轴的各种属性，显示到界面上
self.ui.groupBox_Axis.setChecked(self.__curAxis.isVisible()) #坐标轴可见性
self.ui.chkBoxAxisReverse.setChecked(self.__curAxis.isReverse())
self.ui.spinAxisMin.setValue(self.__curAxis.min())
self.ui.spinAxisMax.setValue(self.__curAxis.max())
self.ui.editAxisTitle.setText(self.__curAxis.titleText()) #轴标题
self.ui.groupBox_AxisTitle.setChecked(self.__curAxis.isTitleVisible()) #轴标题可见
self.ui.editAxisLabelFormat.setText(self.__curAxis.labelFormat()) #标签格式
self.ui.groupBox_AxisLabel.setChecked(self.__curAxis.labelsVisible()) #标签可见
self.ui.groupBox_GridLine.setChecked(self.__curAxis.isGridLineVisible()) #网格线
self.ui.groupBox_Ticks.setChecked(self.__curAxis.isLineVisible()) #主刻度线
self.ui.spinTickCount.setValue(self.__curAxis.tickCount()) #主刻度个数
self.ui.spinMinorTickCount.setValue(self.__curAxis.minorTickCount()) #次刻度个数
self.ui.groupBox_MinorGrid.setChecked(self.__curAxis.isMinorGridLineVisible()) #次网格线可见
@pyqtSlot() ##选择坐标轴Y
def on_radioAxisY_clicked(self):
self.on_radioAxisX_clicked()
##======3.2 坐标轴可见性和范围=======
@pyqtSlot(bool) ##坐标轴可见性
def on_groupBox_Axis_clicked(self,checked):
self.__curAxis.setVisible(checked)
@pyqtSlot(bool) ##坐标反向
def on_chkBoxAxisReverse_clicked(self,checked):
self.__curAxis.setReverse(checked)
@pyqtSlot() ##设置坐标范围
def on_btnSetAxisRange_clicked(self):
minV=self.ui.spinAxisMin.value()
maxV=self.ui.spinAxisMax.value()
self.__curAxis.setRange(minV,maxV)
##======3.3 轴标题=======
@pyqtSlot(bool) ##坐标轴标题可见性
def on_groupBox_AxisTitle_clicked(self,checked):
self.__curAxis.setTitleVisible(checked)
@pyqtSlot() ##设置轴标题
def on_btnAxisSetTitle_clicked(self):
self.__curAxis.setTitleText(self.ui.editAxisTitle.text())
@pyqtSlot() ##设置轴标题的颜色
def on_btnAxisTitleColor_clicked(self):
color=self.__curAxis.titleBrush().color()
color=QColorDialog.getColor(color)
if color.isValid():
self.__curAxis.setTitleBrush(QBrush(color))
@pyqtSlot() ##设置轴标题的字体
def on_btnAxisTitleFont_clicked(self):
iniFont=self.__curAxis.titleFont() #QFont
font,ok=QFontDialog.getFont(iniFont)
if ok:
self.__curAxis.setTitleFont(font)
##======3.4 轴刻度标签=======
@pyqtSlot(bool) ##可见性
def on_groupBox_AxisLabel_clicked(self,checked):
self.__curAxis.setLabelsVisible(checked)
@pyqtSlot() ##设置标签格式
def on_btnAxisLabelFormat_clicked(self):
strFormat=self.ui.editAxisLabelFormat.text()
self.__curAxis.setLabelFormat(strFormat)
@pyqtSlot() ##设置标签文字颜色
def on_btnAxisLabelColor_clicked(self):
color=self.__curAxis.labelsColor()
color=QColorDialog.getColor(color)
if color.isValid():
self.__curAxis.setLabelsColor(color)
@pyqtSlot() ##设置标签字体
def on_btnAxisLabelFont_clicked(self):
iniFont=self.__curAxis.labelsFont() #QFont
font,ok=QFontDialog.getFont(iniFont)
if ok:
self.__curAxis.setLabelsFont(font)
##======3.5 轴线和主刻度=========
@pyqtSlot(bool) ##可见性
def on_groupBox_Ticks_clicked(self,checked):
self.__curAxis.setLineVisible(checked)
@pyqtSlot(int) ##主刻度个数
def on_spinTickCount_valueChanged(self,arg1):
self.__curAxis.setTickCount(arg1)
@pyqtSlot() ##设置线条Pen
def on_btnAxisLinePen_clicked(self):
iniPen=self.__curAxis.linePen()
pen,ok=QmyDialogPen.staticGetPen(iniPen)
if ok:
self.__curAxis.setLinePen(pen)
@pyqtSlot() ##设置线条颜色
def on_btnAxisLinePenColor_clicked(self):
color=self.__curAxis.linePenColor()
color=QColorDialog.getColor(color)
if color.isValid():
self.__curAxis.setLinePenColor(color)
##======3.6 主网格线=========
@pyqtSlot(bool) ##可见性
def on_groupBox_GridLine_clicked(self,checked):
self.__curAxis.setGridLineVisible(checked)
@pyqtSlot() ##设置线条Pen
def on_btnGridLinePen_clicked(self):
iniPen=self.__curAxis.gridLinePen()
pen,ok=QmyDialogPen.staticGetPen(iniPen)
if ok:
self.__curAxis.setGridLinePen(pen)
@pyqtSlot() ##设置线条颜色
def on_btnGridLineColor_clicked(self):
color=self.__curAxis.gridLineColor()
color=QColorDialog.getColor(color)
if color.isValid():
self.__curAxis.setGridLineColor(color)
##======3.7 次网格线=======
@pyqtSlot(bool) ##可见性
def on_groupBox_MinorGrid_clicked(self,checked):
self.__curAxis.setMinorGridLineVisible(checked)
@pyqtSlot(int) ##次刻度个数
def on_spinMinorTickCount_valueChanged(self,arg1):
self.__curAxis.setMinorTickCount(arg1)
@pyqtSlot() ##设置线条Pen
def on_btnMinorPen_clicked(self):
iniPen=self.__curAxis.minorGridLinePen()
pen,ok=QmyDialogPen.staticGetPen(iniPen) #使用类函数调用方法
if ok:
self.__curAxis.setMinorGridLinePen(pen)
@pyqtSlot() ##设置线条颜色
def on_btnMinorColor_clicked(self):
color=self.__curAxis.minorGridLineColor()
color=QColorDialog.getColor(color)
if color.isValid():
self.__curAxis.setMinorGridLineColor(color)
class KLineChartView(QChartView):
# QCandlestickSeries的hovered的信号响应后传递日期出去
candles_hovered = pyqtSignal(bool, str)
def __init__(self, data: pd.DataFrame):
super(KLineChartView, self).__init__()
self.setRenderHint(QPainter.Antialiasing) # 抗锯齿
self._chart = QChart()
self._series = QCandlestickSeries()
self._stocks = data
self._category = list()
self._count = None
self.init_chart()
self._zero_value = (0, self._chart.axisY().min())
self._max_value = (len(self._chart.axisX().categories()),
self._chart.axisY().max())
self._zero_point = self._chart.mapToPosition(
QPointF(self._zero_value[0], self._zero_value[1]))
self._max_point = self._chart.mapToPosition(
QPointF(self._max_value[0], self._max_value[1]))
# 计算x轴单个cate的宽度，用来处理横线不能画到边界
self._cate_width = (self._max_point.x() - self._zero_point.x()) / len(
self._category)
self._series.hovered.connect(self.on_series_hovered)
def on_series_hovered(self, status, candles_set):
trade_date = time.strftime('%Y%m%d',
time.localtime(candles_set.timestamp()))
self.candles_hovered.emit(status, trade_date)
def set_name(self, name):
self._series.setName(name)
def clear_series_values(self):
self._series.clear()
self._chart.axisY().setRange(0, 10)
self._chart.axisX().setCategories(list())
self._stocks = None
def add_series_values(self, data: pd.DataFrame, is_init=False):
self._stocks = data
self._category = self._stocks['trade_date']
self._count = len(self._category)
for _, stock in self._stocks.iterrows():
time_p = datetime.datetime.strptime(stock['trade_date'], '%Y%m%d')
time_p = float(time.mktime(time_p.timetuple()))
_set = QCandlestickSet(float(stock['open']), float(stock['high']),
float(stock['low']), float(stock['close']),
time_p, self._series)
self._series.append(_set)
if not is_init:
self._stocks = data
self._category = self._stocks['trade_date']
axis_x = self._chart.axisX()
axis_y = self._chart.axisY()
axis_x.setCategories(self._category)
max_p = self._stocks[['high', 'low']].stack().max()
min_p = self._stocks[['high', 'low']].stack().min()
axis_y.setRange(min_p * 0.99, max_p * 1.01)
self._zero_value = (0, self._chart.axisY().min())
self._max_value = (len(self._chart.axisX().categories()),
self._chart.axisY().max())
# 计算x轴单个cate的宽度，用来处理横线不能画到边界
self._cate_width = (self._max_point.x() -
self._zero_point.x()) / len(self._category)
def resizeEvent(self, event):
super(KLineChartView, self).resizeEvent(event)
self._zero_point = self._chart.mapToPosition(
QPointF(self._zero_value[0], self._zero_value[1]))
self._max_point = self._chart.mapToPosition(
QPointF(self._max_value[0], self._max_value[1]))
self._cate_width = (self._max_point.x() - self._zero_point.x()) / len(
self._category)
def max_point(self):
return QPointF(self._max_point.x() + self._cate_width / 2,
self._max_point.y())
def min_point(self):
return QPointF(self._zero_point.x() - self._cate_width / 2,
self._zero_point.y())
def init_chart(self):
self._chart.setAnimationOptions(QChart.SeriesAnimations)
self._series.setIncreasingColor(QColor(Qt.red))
self._series.setDecreasingColor(QColor(Qt.green))
self._series.setName(self._stocks['name'].iloc[0])
self.add_series_values(self._stocks, True)
self._chart.addSeries(self._series)
self._chart.createDefaultAxes()
self._chart.setLocalizeNumbers(True)
axis_x = self._chart.axisX()
axis_y = self._chart.axisY()
axis_x.setGridLineVisible(False)
axis_y.setGridLineVisible(False)
axis_x.setCategories(self._category)
axis_x.setLabelsVisible(False)
axis_x.setVisible(False)
max_p = self._stocks[['high', 'low']].stack().max()
min_p = self._stocks[['high', 'low']].stack().min()
axis_y.setRange(min_p * 0.99, max_p * 1.01)
# chart的图例
legend = self._chart.legend()
# 设置图例由Series来决定样式
legend.setMarkerShape(QLegend.MarkerShapeFromSeries)
self.setChart(self._chart)
# 设置外边界全部为0
self._chart.layout().setContentsMargins(0, 0, 0, 0)
# 设置内边界的bottom为0
margins = self._chart.margins()
self._chart.setMargins(QMargins(margins.left(), 0, margins.right(), 0))
# 设置背景区域无圆角
self._chart.setBackgroundRoundness(0)
