def getChart(self, lessonname, data):
series = QtChart.QStackedBarSeries()
for key, name, color, brush in zip(
[self.PASS, self.FAIL], ["pass", "fail"], ["green", "red"],
[QtCore.Qt.Dense1Pattern, QtCore.Qt.Dense2Pattern]):
barset = QtChart.QBarSet(name)
barset.append([d[key] for d in data])
barset.setBrush(QtGui.QBrush(QtGui.QColor(color), brush))
barset.setLabel(name)
series.append(barset)
series.setLabelsFormat("@value%")
series.setLabelsVisible(True)
chart = QtChart.QChart()
chart.addSeries(series)
chart.setTitle(lessonname)
chart.setAnimationOptions(QtChart.QChart.SeriesAnimations)
categories = [d["name"] for d in data]
axis = QtChart.QBarCategoryAxis()
axis.append(categories)
chart.setAxisX(axis, series)
axis = QtChart.QValueAxis()
axis.setMax(100)
axis.setMin(0)
chart.setAxisY(axis)
chart.legend().setVisible(True)
return chart
def calculate_graph(self):
""" Calculate the Bar graph for the selected SKU's from database.
"""
if self.show_graph:
bar_set_1, bar_set_2 = self.get_graph_point()
series = QtChart.QStackedBarSeries()
series.append(bar_set_1)
series.append(bar_set_2)
chart = QtChart.QChart()
chart.setTitle("Good and Bad")
chart.addSeries(series)
chart.setAnimationOptions(QtChart.QChart.SeriesAnimations)
x_axis = QtChart.QBarCategoryAxis()
x_axis.append(constants.TIME_VALUES[:-1])
chart.addAxis(x_axis, QtCore.Qt.AlignBottom)
series.attachAxis(x_axis)
y_axis = QtChart.QValueAxis()
chart.addAxis(y_axis, QtCore.Qt.AlignLeft)
series.attachAxis(y_axis)
chart.legend().setVisible(True)
chart.legend().setAlignment(QtCore.Qt.AlignBottom)
chart_view = QtChart.QChartView(chart)
chart_view.setRenderHint(QtGui.QPainter.Antialiasing)
return chart_view
def __init__(self):
super().__init__()
################
# Create Chart #
################
# Create qchart object
chart = qtch.QChart(title=self.chart_title)
self.setChart(chart)
# Setup series
series = qtch.QStackedBarSeries()
chart.addSeries(series)
self.phys_set = qtch.QBarSet("Physical")
self.swap_set = qtch.QBarSet("Swap")
series.append(self.phys_set)
series.append(self.swap_set)
# Setup Data
self.data = deque([(0, 0)] * self.num_data_points,
maxlen=self.num_data_points)
for phys, swap in self.data:
self.phys_set.append(phys)
self.swap_set.append(swap)
# Setup Axes
x_axis = qtch.QValueAxis()
x_axis.setRange(0, self.num_data_points)
x_axis.setLabelsVisible(False)
y_axis = qtch.QValueAxis()
y_axis.setRange(0, 100)
chart.setAxisX(x_axis, series)
chart.setAxisY(y_axis, series)
# Start refresh timer
self.timer = qtc.QTimer(interval=1000, timeout=self.refresh_stats)
self.timer.start()
###################
# Style the chart #
###################
chart.setAnimationOptions(qtch.QChart.AllAnimations)
chart.setAnimationEasingCurve(
qtc.QEasingCurve(qtc.QEasingCurve.OutBounce))
chart.setAnimationDuration(1000)
# Add shadow around the chart area
chart.setDropShadowEnabled(True)
# Set the theme
chart.setTheme(qtch.QChart.ChartThemeBrownSand)
# Configure a background brush
gradient = qtg.QLinearGradient(chart.plotArea().topLeft(),
chart.plotArea().bottomRight())
gradient.setColorAt(0, qtg.QColor("#333"))
gradient.setColorAt(1, qtg.QColor("#660"))
chart.setBackgroundBrush(qtg.QBrush(gradient))
# Background Pen draws a border around the chart
chart.setBackgroundPen(qtg.QPen(qtg.QColor('black'), 5))
# Set title font and brush
chart.setTitleBrush(qtg.QBrush(qtc.Qt.white))
chart.setTitleFont(qtg.QFont('Impact', 32, qtg.QFont.Bold))
# Set axes fonts and brushes
axis_font = qtg.QFont('Mono', 16)
axis_brush = qtg.QBrush(qtg.QColor('#EEF'))
y_axis.setLabelsFont(axis_font)
y_axis.setLabelsBrush(axis_brush)
# Grid lines
grid_pen = qtg.QPen(qtg.QColor('silver'))
grid_pen.setDashPattern([1, 1, 0, 1])
x_axis.setGridLinePen(grid_pen)
y_axis.setGridLinePen(grid_pen)
y_axis.setTickCount(11)
#Shades
y_axis.setShadesVisible(True)
y_axis.setShadesColor(qtg.QColor('#884'))
# Styling the legend
legend = chart.legend()
# Background
legend.setBackgroundVisible(True)
legend.setBrush(qtg.QBrush(qtg.QColor('white')))
# Font
legend.setFont(qtg.QFont('Courier', 14))
legend.setLabelColor(qtc.Qt.darkRed)
# Markers
legend.setMarkerShape(qtch.QLegend.MarkerShapeCircle)
