*class Plot_Curve_Item(pg.PlotCurveItem): def __init__(self, parent=None): super(Plot_Curve_Item, self).__init__(parent=parent)*
On Thu, Apr 30, 2020 at 9:57 PM Patrick <[email protected]> wrote: > Hi, > > This looks like it should work, until you see your "__init()" method > should be "__init__()"! > > Patrick > > On Friday, 1 May 2020 05:23:08 UTC+9:30, Wahabo Ouedraogo wrote: >> >> Hi everyone! >> I created a class Plot_Curve_Item that herite of the PlotCurveItem class >> of pyqtgraph. In the manufacturer of the class, I declare a timer which is >> a QTimeLine instance of Qt. I redefine the HoverEvent method to increase >> the thickness of the curve when the mouse flies over it for a time of >> 1000ms. so I call the start function of QTimerLine to start the timer. I >> connect the finished signal of the timer to the Timer slot that I defined >> in the class Plot_Curve_Item to draw the width of the curve to 2 once the >> time of 1000 ms is elapsed. However, when I execute the code, python sends >> me this message: >> >> Error sending hover exit event: >> >> *|==============================>>* >> * | Traceback (most recent call last):* >> * | File "d:/Documents/VISUAL STUDIO CODE EXO/PlotCurve.py", line >> 39, in <module>* >> * | sys.exit(app.exec_())* >> * | File >> "C:\Users\ThinkPad\AppData\Local\Programs\Python\Python38-32\lib\site-packages\pyqtgraph\widgets\GraphicsView.py", >> line 368, in mouseMoveEvent* >> * | QtGui.QGraphicsView.mouseMoveEvent(self, ev)* >> * | File >> "C:\Users\ThinkPad\AppData\Local\Programs\Python\Python38-32\lib\site-packages\pyqtgraph\GraphicsScene\GraphicsScene.py", >> line 162, in mouseMoveEvent* >> * | self.sendHoverEvents(ev)* >> * | File >> "C:\Users\ThinkPad\AppData\Local\Programs\Python\Python38-32\lib\site-packages\pyqtgraph\GraphicsScene\GraphicsScene.py", >> line 256, in sendHoverEvents* >> * | debug.printExc("Error sending hover exit event:")* >> * | --- exception caught here ---* >> * | File >> "C:\Users\ThinkPad\AppData\Local\Programs\Python\Python38-32\lib\site-packages\pyqtgraph\GraphicsScene\GraphicsScene.py", >> line 254, in sendHoverEvents* >> * | item.hoverEvent(event)* >> * | File "d:/Documents/VISUAL STUDIO CODE EXO/PlotCurve.py", line >> 20, in hoverEvent* >> * | self.timer.start()* >> * | AttributeError: 'Plot_Curve_Item' object has no attribute 'timer'* >> * |==============================<<* >> >> *Here's the whole code:* >> >> >> >> from PyQt5.QtCore import * >> from PyQt5.QtGui import * >> from PyQt5.QtWidgets import * >> import pyqtgraph as pg >> from pyqtgraph.Qt import QtGui, QtCore >> import numpy as np >> import time >> import sys >> >> >> class Plot_Curve_Item(pg.PlotCurveItem): >> def __init(self,parent = None): >> super().__init__(parent=parent) >> self.setParent(parent) >> self.timer = QTimeLine(1000) >> self.timer.finished.connect(self.Timer) >> >> def hoverEvent(self,event): >> self.timer.start() >> self.setPen(width=4) >> >> def Timer(self): >> self.setPen(width=2) >> >> >> if __name__ == "__main__": >> app = QApplication(sys.argv) >> widget = QMainWindow() >> x1 = np.linspace(0,20,10) >> y1 = np.arange(0,10) >> Plot_Widget = pg.PlotWidget() >> Plot_Item = pg.PlotItem() >> plot_item_curve = Plot_Curve_Item(x1,y1) >> Plot_Item.addItem(plot_item_curve) >> Plot_Widget.addItem(Plot_Item) >> widget.setCentralWidget(Plot_Widget) >> widget.show() >> sys.exit(app.exec_()) >> > -- > You received this message because you are subscribed to the Google Groups > "pyqtgraph" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/pyqtgraph/367c1701-7e38-4011-bcb4-0d58a57d72bc%40googlegroups.com > <https://groups.google.com/d/msgid/pyqtgraph/367c1701-7e38-4011-bcb4-0d58a57d72bc%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "pyqtgraph" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/pyqtgraph/CAD_qyJp%3DRLfSCQvYKe2n4xP%2BdKXR5pU6VvafYCCOHFqOS5x%2B%2Bg%40mail.gmail.com.
