import random
# example qtcharts/examples/zoomlinechart tranlated in python
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
# [1]
series = QLineSeries()
for i in range(500):
p = QPointF(i, 100 * math.sin(math.pi/50 * i) + random.randint(0, 20))
series.append(p)
# [1]
chart = Chart()
chart.addSeries(series)
chart.setTitle("Zoom in/out example")
chart.setAnimationOptions(QChart.SeriesAnimations)
chart.legend().hide()
chart.createDefaultAxes()
chartView = ChartView(chart)
chartView.setRenderHint(QPainter.Antialiasing)
window = QMainWindow()
window.setCentralWidget(chartView)
window.resize(400, 300)
window.grabGesture(Qt.PanGesture)
window.grabGesture(Qt.PinchGesture)
window.show()
class Navigation(QtCore.QObject):
clicked = QtCore.pyqtSignal(QtCore.QModelIndex)
def __init__(self, chartData, navData, parent=None):
super(Navigation, self).__init__(parent)
print('navdata', navData)
self.toolbar = QtWidgets.QToolBar()
self.toolbar.actionTriggered.connect(self.on_actionTriggered)
self.model = QtGui.QStandardItemModel(self)
dict_to_model(self.model.invisibleRootItem(), navData)
it = self.model.item(0, 0)
ix = self.model.indexFromItem(it)
root_action = self.toolbar.addAction(it.text())
root_action.setData(QtCore.QPersistentModelIndex(ix))
self.listview = QtWidgets.QListView()
self.listview.setEditTriggers(
QtWidgets.QAbstractItemView.NoEditTriggers)
self.listview.clicked.connect(self.on_clicked)
self.listview.setModel(self.model)
self.listview.setRootIndex(ix)
self.gridLayout = QtWidgets.QGridLayout()
self.gridLayout.setObjectName("gridLayout")
self.listview.setFixedWidth(350)
self.gridLayout.addWidget(self.listview, 0, 0, 2, 1)
self.frame = QtWidgets.QFrame()
self.chart = Chart('map_file', chartData, self)
self.ly = QtWidgets.QVBoxLayout()
self.frame.setLayout(self.ly)
self.gridLayout1 = QtWidgets.QGridLayout()
self.gridLayout1.addWidget(self.frame)
self.gridLayout2 = QtWidgets.QGridLayout()
self.gridLayout2.addWidget(self.chart.chartview) #calling chart view
self.gridLayout.addLayout(self.gridLayout2, 0, 2, 0, 1)
self.gridLayout.addLayout(self.gridLayout1, 0, 2, 0, 1)
self.horizontalGroupBox = QGroupBox()
self.horizontalGroupBox.setLayout(self.gridLayout)
#make the listed items clickable
@QtCore.pyqtSlot(QtCore.QModelIndex)
def on_clicked(self, index):
if not self.model.hasChildren(index):
self.clicked.emit(index)
return
action = self.toolbar.addAction(index.data())
action.setData(QtCore.QPersistentModelIndex(index))
self.listview.setRootIndex(index)
self.chart.addSeries(index.data())
#make the breadcrumbs clickable in order to go back and forth
#no children for object files, hence it is not listed in the nav bar
@QtCore.pyqtSlot(QtWidgets.QAction)
def on_actionTriggered(self, action):
ix = action.data()
self.chart.addSeries(ix.data())
model = ix.model()
self.listview.setRootIndex(QtCore.QModelIndex(ix))
self.toolbar.clear()
ixs = []
while ix.isValid():
ixs.append(ix)
ix = ix.parent()
for ix in reversed(ixs):
action = self.toolbar.addAction(ix.data())
action.setData(ix)
