matplotlibPyQt5/addingSaveButton.py at master · boxcontrol/matplotlibPyQt5 · GitHub

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import sys
import random
import matplotlib
matplotlib.use("Qt5Agg")
from PyQt5 import QtCore
from PyQt5.QtWidgets import QApplication, QMainWindow, QMenu, QVBoxLayout, QSizePolicy, QMessageBox, QWidget, QPushButton
from numpy import arange, sin, pi
from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.backends.backend_qt5agg import NavigationToolbar2QT as NavigationToolbar
from matplotlib.figure import Figure


# customize navigation toolbar
class NavToolbar(NavigationToolbar):
    toolitems = [('Save', 'Save the figure', 'filesave', 'save_figure')]


class MyMplCanvas(FigureCanvas):
    """Ultimately, this is a QWidget (as well as a FigureCanvasAgg, etc.)."""
    def __init__(self, parent=None, width=5, height=4, dpi=100, title='title'):
        self.title = title
        fig = Figure(figsize=(width, height), dpi=dpi)
        self.axes = fig.add_subplot(111)
        fig.suptitle(title)

        # We want the axes cleared every time plot() is called
        self.axes.hold(False)

        self.compute_initial_figure()


        FigureCanvas.__init__(self, fig)
        self.setParent(parent)

        FigureCanvas.setSizePolicy(self,
                QSizePolicy.Expanding,
                QSizePolicy.Expanding)
        FigureCanvas.updateGeometry(self)

    def compute_initial_figure(self):
        pass


class MyStaticMplCanvas(MyMplCanvas):
    """Simple canvas with a sine plot."""
    def compute_initial_figure(self):
        t = arange(0.0, 3.0, 0.01)
        s = sin(2*pi*t)
        self.axes.plot(t, s)
        self.axes.set_ylabel('label1')
        self.axes.set_xlabel('label')
        self.axes.grid(True)
        #self.axes.set_ylim(0, 0.5)


class MyDynamicMplCanvas(MyMplCanvas):
    """A canvas that updates itself every second with a new plot."""
    def __init__(self, *args, **kwargs):
        MyMplCanvas.__init__(self, *args, **kwargs)
        timer = QtCore.QTimer(self)
        timer.timeout.connect(self.update_figure)
        timer.start(1000)

    def compute_initial_figure(self):
        self.axes.plot([0, 1, 2, 3], [1, 2, 0, 4], 'r')
        self.axes.set_ylabel('label1')
        self.axes.set_xlabel('label')
        self.axes.grid(True)

    def update_figure(self):
        # Build a list of 4 random integers between 0 and 10 (both inclusive)
        l = [random.randint(0, 10) for i in range(4)]
        self.axes.plot([0, 1, 2, 3], l, 'r')
        self.axes.set_ylabel('label y din plot')
        self.axes.set_xlabel('label x din plot')
        self.axes.grid(True)
        self.draw()


class ApplicationWindow(QMainWindow):
    def __init__(self):
        QMainWindow.__init__(self)
        self.setAttribute(QtCore.Qt.WA_DeleteOnClose)
        self.setWindowTitle("application main window")

        self.file_menu = QMenu('&File', self)
        self.file_menu.addAction('&Quit', self.fileQuit,
                QtCore.Qt.CTRL + QtCore.Qt.Key_Q)
        self.menuBar().addMenu(self.file_menu)

        self.help_menu = QMenu('&Help', self)
        self.menuBar().addSeparator()
        self.menuBar().addMenu(self.help_menu)

        self.help_menu.addAction('&About', self.about)

        self.main_widget = QWidget(self)

        l = QVBoxLayout(self.main_widget)
        sc = MyStaticMplCanvas(self.main_widget, width=5, height=4, dpi=100, title='Title 1')
        dc = MyDynamicMplCanvas(self.main_widget, width=5, height=4, dpi=100, title='Title 2')
        scntb = NavigationToolbar(sc, self.main_widget) # full toolbar
        dcntb = NavToolbar(dc, self.main_widget) # only save button

        l.addWidget(sc)
        l.addWidget(scntb)
        l.addWidget(dc)
        l.addWidget(dcntb)

        self.main_widget.setFocus()
        self.setCentralWidget(self.main_widget)

        self.statusBar().showMessage("All hail matplotlib!", 2000)


    def fileQuit(self):
        self.close()

    def closeEvent(self, ce):
        self.fileQuit()

    def about(self):
        QMessageBox.about(self, "About",
  """embedding_in_qt5.py example
  Copyright 2015 BoxControL

  This program is a simple example of a Qt5 application embedding matplotlib
  canvases. It is base on example from matplolib documentation, and initially was
  developed from Florent Rougon and Darren Dale.

  http://matplotlib.org/examples/user_interfaces/embedding_in_qt4.html

  It may be used and modified with no restriction; raw copies as well as
  modified versions may be distributed without limitation.""")


if __name__ == '__main__':
    app = QApplication(sys.argv)

    aw = ApplicationWindow()
    aw.setWindowTitle("PyQt5 Matplot Example")
    aw.show()
    #sys.exit(qApp.exec_())
    app.exec_()