每當我雙擊小部件時，我想獲取 pyqtgraph 小部件上的鼠標光標坐標并將它們發送到函數。我查找了如何做并可以找到一些類似的問題，但我仍然無法獲得正確的坐標。import pyqtgraph as pgfrom pyqtgraph.Qt import QtGui, QtCorefrom pyqtgraph.dockarea import *from PyQt5.QtGui import *from PyQt5.QAxContainer import *from PyQt5.QtCore import *def on_double_click_out(event): pos = event print('clicked', pos) class Plotter(): def __init__(self): pg.setConfigOption('background', 'w') pg.setConfigOption('foreground', 'k') self.win = QtGui.QMainWindow() self.area = DockArea() self.win.setCentralWidget(self.area) self.win.resize(1000,500) self.win.setWindowTitle('pyqtgraph example: dockarea') self.dock_TR = Dock("TR", size=(300,10)) self.dock_TR.hideTitleBar() self.area.addDock(self.dock_TR) self.widgetTR = pg.PlotWidget() self.widgetTR.showGrid(x=True, y=True, alpha=0.3) self.dock_TR.addWidget(self.widgetTR) self.win.show() p = Plotter()proxy = pg.SignalProxy(p.widgetTR.scene().sigMouseClicked, rateLimit=60, slot=on_double_click_out)當我在 widgetTR 上單擊（不是雙擊）時，我得到一些坐標，但它們與 x、y 軸無關。例如，當我單擊小部件的 (1, 1) 時，結果是clicked (<MouseClickEvent (573,-259) button=1>,)我還想知道是否可以通過雙擊來完成此操作。
1 回答
慕碼人8056858
TA貢獻1803條經驗 獲得超6個贊
您可以使用 pyqtgraph.GraphicsScene.mouseEvents.MouseClickEvent.double() 來查看 MouseClickEvent 是否是雙擊。
您確定坐標不正確嗎？坐標系從左上角的 (0,0) 開始。
試試這個代碼，它對我有用：
import pyqtgraph as pg
from pyqtgraph.Qt import QtGui, QtCore
from pyqtgraph.dockarea import *
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5 import QtCore, QtGui, QtWidgets, uic
import numpy as np
def on_double_click_out(event):
mouseEvent = event[0]
mousePoint = mouseEvent.pos()
if mouseEvent.double():
print("Double click")
if p.p1.sceneBoundingRect().contains(mousePoint):
print('x=', mousePoint.x(), ' y=', mousePoint.y())
class Plotter():
def __init__(self):
pg.setConfigOption('background', 'w')
pg.setConfigOption('foreground', 'k')
self.win = pg.GraphicsLayoutWidget(show=True)
self.win.resize(1000,500)
self.win.setWindowTitle('pyqtgraph example: dockarea')
self.p1 = self.win.addPlot()
self.win.show()
p = Plotter()
proxy = pg.SignalProxy(p.win.scene().sigMouseClicked, rateLimit=60, slot=on_double_click_out)
if __name__ == '__main__':
import sys
if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'):
QtGui.QApplication.instance().exec_()
您還可以查看 pyqtgraph 示例“crosshair.py”。
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