pyqt example testGraphAnalysis (snippet)

Python pyqt (gui) example 'testGraphAnalysis'

Modules used in program:

• import pyqtgraph as pg
• import sys

testGraphAnalysis

Python pyqt example: testGraphAnalysis

#!/usr/bin/env python
# encoding: utf-8
'''
Created on 2019年8月17日
@author: weike32
@site: https://pyqt5.com ,https://github.com/weike32
@email: [email protected]
@file: CopyContent
@description:
'''
import sys
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import QDialog, QApplication, QWidget
from qtpy import QtWidgets
import pyqtgraph as pg

from PyQtGraph.Data.graphAnalysis import graph_Form


class CustomViewBox(pg.ViewBox):
    def __init__(self, *args, **kwds):
        pg.ViewBox.__init__(self, *args, **kwds)
        self.RectMode = 3
        self.setMouseMode(self.RectMode)

    def mouseClickEvent(self, ev):
        if ev.button() == pg.QtCore.Qt.RightButton:
            self.autoRange()
    def mouseDragEvent(self, ev):
        pg.ViewBox.mouseDragEvent(self, ev)
    def wheelEvent(self,ev,axis=None):
        ev.ignore()

class graphAnalysis(QDialog,graph_Form):
    def __init__(self):
        super(graphAnalysis, self).__init__()
        self.setupUi(self)
        self.pushButton_7.clicked.connect(self.test)
        self.tabWidget.clear()

    def handleChanged(self,item,column):
        count = item.childCount()
        if item.checkState(column) == Qt.Checked:
            for index in range(count):
                item.child(index).setCheckState(0,Qt.Checked)
        if item.checkState(column) == Qt.Unchecked:
            for index in range(count):
                item.child(index).setCheckState(0,Qt.Unchecked)

    def test(self):

        tab1 = QtWidgets.QWidget()
        scrollArea = QtWidgets.QScrollArea(tab1)
        scrollArea.setMinimumSize(650,550)
        scrollArea.setWidgetResizable(True)

        labelsContainer = QWidget()
        labelsContainer.setMinimumSize(0,3000+200)
        scrollArea.setWidget(labelsContainer)
        layout = QtWidgets.QVBoxLayout(labelsContainer)

        time = ['2019-04-20 08:09:00', '2019-04-20 08:09:00', '2019-04-20 08:09:00', '2019-04-20 08:09:00']
        value = [1.2, 2, 1, 4]
        xdict = dict(enumerate(time))
        ticks = [list(zip(range(4), tuple(time)))]
        for i in range(11):
            vb1 = CustomViewBox()
            plt1 = pg.PlotWidget(title="Basic array plotting%s"%i, viewBox=vb1)
            plt1.resize(500, 500)
            plt1.setBackground(background=None)
            plt1.plot(list(xdict.keys()), value)
            plt1.getPlotItem().getAxis("bottom").setTicks(ticks)
            temp1 = QtWidgets.QWidget()
            temp1.setMinimumSize(600, 300)
            temp1.setMaximumSize(600, 300)
            layout2 = QtWidgets.QVBoxLayout(temp1)
            layout2.addWidget(plt1)
            layout.addWidget(temp1)
        spacerItem = QtWidgets.QSpacerItem(20, 40, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding)
        layout.addItem(spacerItem)
        # print(layout.count())
        self.tabWidget.addTab(tab1, '12')
        for i in range(self.tabWidget.count()):
            self.tabWidget.widget(i)

if __name__ =="__main__":
    app = QApplication(sys.argv)
    w = graphAnalysis()
    w.show()
    sys.exit(app.exec_())

Useful links

• Learn PyQt: https://pythonbasics.org/pyqt-hello-world/
• Install PyQt: https://pythonbasics.org/install-pyqt/