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add treeWidget Demo
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‎PyQtGraph/README.md

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## 目录
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- [鼠标获取X轴坐标](#1、鼠标获取X轴坐标)
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- [禁止右键点击功能、鼠标滚轮，添加滚动条等功能](#2、禁止右键点击功能、鼠标滚轮，添加滚动条等功能)
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## 1、鼠标获取X轴坐标
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[运行 mouseFlow.py](mouseFlow.py)
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![mouseFlow](ScreenShot/mouseFlow.gif)
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![mouseFlow](ScreenShot/mouseFlow.gif)
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## 2、禁止右键点击功能、鼠标滚轮，添加滚动条等功能
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[运行 graph1.py](graph1.py)
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![mouseFlow](ScreenShot/function.gif)
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## 2、不用修改源码，重加载，解决右键保存图片异常；解决自定义坐标轴密集显示；禁止鼠标事件；
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[加载 tools.py](tools.py)

‎PyQtGraph/ScreenShot/function.gif

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‎PyQtGraph/graph1.py

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#!/usr/bin/env python
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# encoding: utf-8
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'''
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Created on 2019年5月21日
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@author: weike32
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@site: https://pyqt5.com ,https://github.com/weike32
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@email: 394967319@qq.com
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@file: CopyContent
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@description: 禁止右键，添加滑动窗口，点击按钮生成图片，自定义Y轴坐标，背景颜色调整
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'''
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import sys
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from PyQt5.QtWidgets import QDialog, QApplication, QWidget
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from qtpy import QtWidgets
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import pyqtgraph as pg
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from PyQtGraph.graphAnalysis import graph_Form
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class CustomViewBox(pg.ViewBox):
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def __init__(self, *args, **kwds):
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pg.ViewBox.__init__(self, *args, **kwds)
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self.RectMode = 3
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self.setMouseMode(self.RectMode)
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def mouseClickEvent(self, ev):
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if ev.button() == pg.QtCore.Qt.RightButton:
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self.autoRange()
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def mouseDragEvent(self, ev):
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pg.ViewBox.mouseDragEvent(self, ev)
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def wheelEvent(self,ev, axis=None):
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# pg.ViewBox.wheelEvent(self, ev, axis)
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ev.ignore()
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class graphAnalysis(QDialog,graph_Form):
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def __init__(self):
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super(graphAnalysis, self).__init__()
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self.setupUi(self)
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self.pushButton_7.clicked.connect(self.test)
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self.tabWidget.clear()
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def test(self):
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tab1 = QtWidgets.QWidget()
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scrollArea = QtWidgets.QScrollArea(tab1)
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scrollArea.setMinimumSize(984,550)
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scrollArea.setWidgetResizable(True)
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labelsContainer = QWidget()
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labelsContainer.setMinimumSize(0,1500)
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scrollArea.setWidget(labelsContainer)
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layout = QtWidgets.QVBoxLayout(labelsContainer)
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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']
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value = [1.2, 2, 1, 4]
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xdict = dict(enumerate(time))
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ticks = [list(zip(range(4), tuple(time)))]
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vb = CustomViewBox()
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plt = pg.PlotWidget(title="标题这里填写",viewBox=vb)
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plt.setBackground(background=None)
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plt.plot(list(xdict.keys()), value)
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plt.getPlotItem().getAxis("bottom").setTicks(ticks)
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temp = QtWidgets.QWidget()
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temp.setMinimumSize(900,300)
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temp.setMaximumSize(900,300)
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layout1 = QtWidgets.QVBoxLayout(temp)
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layout1.addWidget(plt)
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layout.addWidget(temp)
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spacerItem = QtWidgets.QSpacerItem(20, 40, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding)
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layout.addItem(spacerItem)
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self.tabWidget.addTab(tab1, '这里tabWidget修改标签')
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if __name__ =="__main__":
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app = QApplication(sys.argv)
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w = graphAnalysis()
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w.show()
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sys.exit(app.exec_())

‎PyQtGraph/graphAnalysis.ui

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<?xml version="1.0" encoding="UTF-8"?>
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<ui version="4.0">
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<class>Form</class>
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<widget class="QWidget" name="Form">
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<property name="geometry">
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<rect>
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<x>0</x>
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<y>0</y>
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<width>1024</width>
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<height>768</height>
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</rect>
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</property>
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<property name="windowTitle">
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<string>Form</string>
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</property>
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<layout class="QVBoxLayout" name="verticalLayout">
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<property name="spacing">
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<number>20</number>
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</property>
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<property name="leftMargin">
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<number>20</number>
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</property>
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<property name="topMargin">
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<number>20</number>
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</property>
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<property name="rightMargin">
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<number>20</number>
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</property>
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<property name="bottomMargin">
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<number>20</number>
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</property>
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<item>
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<widget class="QLabel" name="label">
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<property name="font">
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<font>
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<pointsize>15</pointsize>
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</font>
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</property>
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<property name="text">
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<string>图形分析</string>
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</property>
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<property name="alignment">
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<set>Qt::AlignCenter</set>
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</property>
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</widget>
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</item>
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<item>
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<widget class="QTabWidget" name="tabWidget">
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<property name="currentIndex">
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<number>0</number>
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</property>
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<widget class="QWidget" name="tab">
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<attribute name="title">
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<string>折线图</string>
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</attribute>
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</widget>
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<widget class="QWidget" name="tab_2">
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<attribute name="title">
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<string>Tab 2</string>
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</attribute>
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</widget>
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</widget>
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</item>
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<item>
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<widget class="QPushButton" name="pushButton_7">
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<property name="minimumSize">
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<size>
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<width>0</width>
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<height>80</height>
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</size>
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</property>
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<property name="font">
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<font>
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<pointsize>15</pointsize>
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</font>
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</property>
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<property name="text">
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<string>分析</string>
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</property>
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</widget>
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</item>
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</layout>
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</widget>
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<resources/>
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<connections/>
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</ui>

‎PyQtGraph/mouseFlow.py

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#!/usr/bin/env python
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# encoding: utf-8
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'''
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Created on 2017年5月2日
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Created on 2019年5月2日
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@author: weike32
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@site: https://pyqt5.com ,https://github.com/weike32
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@email: 394967319@qq.com

‎PyQtGraph/tools.py

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#!/usr/bin/env python
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# encoding: utf-8
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'''
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Created on 2019年5月21日
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@author: weike32
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@site: https://pyqt5.com ,https://github.com/weike32
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@email: 394967319@qq.com
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@file: CopyContent
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@description: 工具类
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'''
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from pyqtgraph.exporters.ImageExporter import ImageExporter, Exporter
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from pyqtgraph.parametertree import Parameter
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import pyqtgraph as pg
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#不用修改源码，重加载，解决右键保存图片异常
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def widthChanged(self):
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sr = self.getSourceRect()
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ar = float(sr.height()) / sr.width()
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self.params.param('height').setValue(int(self.params['width'] * ar), blockSignal=self.heightChanged)
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def heightChanged(self):
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sr = self.getSourceRect()
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ar = float(sr.width()) / sr.height()
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self.params.param('width').setValue(int(self.params['height'] * ar), blockSignal=self.widthChanged)
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def New__init__(self, item):
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Exporter.__init__(self, item)
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tr = self.getTargetRect()
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if isinstance(item, pg.Qt.QtGui.QGraphicsItem):
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scene = item.scene()
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else:
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scene = item
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bgbrush = scene.views()[0].backgroundBrush()
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bg = bgbrush.color()
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if bgbrush.style() == pg.Qt.QtCore.Qt.NoBrush:
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bg.setAlpha(0)
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self.params = Parameter(name='params', type='group', children=[
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{'name': 'width', 'type': 'int', 'value': int(tr.width()), 'limits': (0, None)},
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{'name': 'height', 'type': 'int', 'value': int(tr.height()), 'limits': (0, None)},
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{'name': 'antialias', 'type': 'bool', 'value': True},
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{'name': 'background', 'type': 'color', 'value': bg},
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])
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self.params.param('width').sigValueChanged.connect(self.widthChanged)
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self.params.param('height').sigValueChanged.connect(self.heightChanged)
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ImageExporter.heightChanged = heightChanged
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ImageExporter.widthChanged = widthChanged
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ImageExporter.__init__ = New__init__
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#解决自定义坐标轴密集显示
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class MyStringAxis(pg.AxisItem):
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def __init__(self, xdict, *args, **kwargs):
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pg.AxisItem.__init__(self, *args, **kwargs)
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self.xdict = xdict
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def tickStrings(self, values, scale, spacing):
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strings = []
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for v in values:
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vs = v * scale
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if vs in self.xdict.keys():
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vstr = self.xdict[vs]
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else:
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vstr = ""
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strings.append(vstr)
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return strings
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# 禁止鼠标事件
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class CustomViewBox(pg.ViewBox):
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def __init__(self, *args, **kwds):
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pg.ViewBox.__init__(self, *args, **kwds)
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self.RectMode = 3
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self.setMouseMode(self.RectMode)
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def mouseClickEvent(self, ev):
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if ev.button() == pg.QtCore.Qt.RightButton:
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self.autoRange()
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def mouseDragEvent(self, ev):
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pg.ViewBox.mouseDragEvent(self, ev)
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def wheelEvent(self,ev, axis=None):
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pg.ViewBox.wheelEvent(self, ev, axis)

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