Is it possible to capture mouse in QGraphicsView?
-
Hi,
I've created a UI file with the Editor, it does contain a QGraphicsView (promoted to QChart) and I would like to know if it's possible to capture the mouse click events on the QChart (or QGraphicsView) and handle them in order to show a context menu when right-click on the chart.
From a slight research it seems to me I need to Subclass the QGraphicsView and implement an eventFilter, is that right?
I'm using PySide2 and fbs (to generate the application installer). Here's how I load the UI into PySide2:
class UiLoader(QUiLoader): """ Override the createWidget method so we can load a promoted QGraphicsView otherwise the QUiLoader is not able to load it """ def createWidget(self, classname, parent=None, name=""): if classname == "QChartView": return QtCharts.QChartView(parent) return super().createWidget(classname, parent, name) class AppContext(ApplicationContext): def __init__(self, *args, **kwargs): super(AppContext, self).__init__() # Load UI file ui_file = self.get_resource("mainwindow.ui") self.file = QFile(ui_file) self.file.open(QFile.ReadOnly) self.loader = UiLoader() self.window = self.loader.load(self.file) def run(self): self.app.setStyle('Fusion') # Creating QChart # https://doc.qt.io/qtforpython-5/tutorials/datavisualize/add_chart.html # noqa: E501 self.chart = QtCharts.QChart() self.chart.setAnimationOptions(QtCharts.QChart.AllAnimations) # Chart steps setup, etc... # Creating QChartView self.window.graphicsView.setChart(self.chart) self.window.graphicsView.setRenderHint(QPainter.Antialiasing) if __name__ == '__main__': appctxt = AppContext() exit_code = appctxt.run() sys.exit(exit_code) -
Hi,
I've created a UI file with the Editor, it does contain a QGraphicsView (promoted to QChart) and I would like to know if it's possible to capture the mouse click events on the QChart (or QGraphicsView) and handle them in order to show a context menu when right-click on the chart.
From a slight research it seems to me I need to Subclass the QGraphicsView and implement an eventFilter, is that right?
I'm using PySide2 and fbs (to generate the application installer). Here's how I load the UI into PySide2:
class UiLoader(QUiLoader): """ Override the createWidget method so we can load a promoted QGraphicsView otherwise the QUiLoader is not able to load it """ def createWidget(self, classname, parent=None, name=""): if classname == "QChartView": return QtCharts.QChartView(parent) return super().createWidget(classname, parent, name) class AppContext(ApplicationContext): def __init__(self, *args, **kwargs): super(AppContext, self).__init__() # Load UI file ui_file = self.get_resource("mainwindow.ui") self.file = QFile(ui_file) self.file.open(QFile.ReadOnly) self.loader = UiLoader() self.window = self.loader.load(self.file) def run(self): self.app.setStyle('Fusion') # Creating QChart # https://doc.qt.io/qtforpython-5/tutorials/datavisualize/add_chart.html # noqa: E501 self.chart = QtCharts.QChart() self.chart.setAnimationOptions(QtCharts.QChart.AllAnimations) # Chart steps setup, etc... # Creating QChartView self.window.graphicsView.setChart(self.chart) self.window.graphicsView.setRenderHint(QPainter.Antialiasing) if __name__ == '__main__': appctxt = AppContext() exit_code = appctxt.run() sys.exit(exit_code)in order to show a context menu when right-click on the chart
I don't know anything about
QChart. But forQGraphicsViewthere isQGraphicsView::contextMenuEvent(). See the PyQt example at https://stackoverflow.com/a/14972629/489865 ?
