Created
August 28, 2012 00:02
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Pyside GUI w/embedded matplotlib class in IPython Notebook
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| from PySide import QtCore, QtGui | |
| import sys | |
| matplotlib.rcParams['backend.qt4']='PySide' | |
| from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas | |
| from matplotlib.figure import Figure | |
| class MatplotlibWidget(FigureCanvas): | |
| def __init__(self, parent=None): | |
| super(MatplotlibWidget, self).__init__(Figure()) | |
| self.setParent(parent) | |
| self.figure = Figure() | |
| self.canvas = FigureCanvas(self.figure) | |
| self.axes = self.figure.add_subplot(111) | |
| self.data = np.random.random((10,10)) | |
| self.data = np.zeros((10,10)) | |
| self.data[2:3,:] = 1 | |
| self.axes.imshow(self.data) | |
| def Plot(self): | |
| self.data = np.random.random((10,10)) | |
| self.axes.imshow(self.data) | |
| # the majority of the following class comes from using 'pyside-uic blah.ui' | |
| # where blah.ui is a simple gui made in the qt designer | |
| class Ui_MainWindow(object): | |
| def setupUi(self, MainWindow): | |
| MainWindow.setObjectName("MainWindow") | |
| MainWindow.resize(800, 600) | |
| self.centralwidget = QtGui.QWidget(MainWindow) | |
| self.centralwidget.setObjectName("centralwidget") | |
| self.pushButton = QtGui.QPushButton(self.centralwidget) | |
| self.pushButton.setGeometry(QtCore.QRect(310, 230, 114, 32)) | |
| self.pushButton.setObjectName("pushButton") | |
| # change this line to use the matplotlib widget instead of the stock 'widget' | |
| # that is in qt designer | |
| # self.widget = QtGui.QWidget(self.centralwidget) | |
| self.widget = MatplotlibWidget(self.centralwidget) | |
| self.widget.setGeometry(QtCore.QRect(150, 309, 281, 181)) | |
| self.widget.setObjectName("widget") | |
| self.widget.mpl_connect('button_press_event', self.printoutput) | |
| self.textEdit = QtGui.QTextEdit(self.centralwidget) | |
| self.textEdit.setGeometry(QtCore.QRect(200, 110, 341, 31)) | |
| self.textEdit.setObjectName("textEdit") | |
| MainWindow.setCentralWidget(self.centralwidget) | |
| self.menubar = QtGui.QMenuBar() | |
| self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 22)) | |
| self.menubar.setObjectName("menubar") | |
| MainWindow.setMenuBar(self.menubar) | |
| self.statusbar = QtGui.QStatusBar(MainWindow) | |
| self.statusbar.setObjectName("statusbar") | |
| MainWindow.setStatusBar(self.statusbar) | |
| self.retranslateUi(MainWindow) | |
| QtCore.QMetaObject.connectSlotsByName(MainWindow) | |
| def retranslateUi(self, MainWindow): | |
| MainWindow.setWindowTitle(QtGui.QApplication.translate("MainWindow", "MainWindow", None, QtGui.QApplication.UnicodeUTF8)) | |
| self.pushButton.setText(QtGui.QApplication.translate("MainWindow", "clickme", None, QtGui.QApplication.UnicodeUTF8)) | |
| self.textEdit.setHtml(QtGui.QApplication.translate("MainWindow", "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0//EN\" \"http://www.w3.org/TR/REC-html40/strict.dtd\">\n" | |
| "<html><head><meta name=\"qrichtext\" content=\"1\" /><style type=\"text/css\">\n" | |
| "p, li { white-space: pre-wrap; }\n" | |
| "</style></head><body style=\" font-family:\'Lucida Grande\'; font-size:13pt; font-weight:400; font-style:normal;\">\n" | |
| "<p style=\" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;\">testing</p></body></html>", None, QtGui.QApplication.UnicodeUTF8)) | |
| # the rest of this class was hand coded | |
| self.pushButton.clicked.connect(self.output) | |
| self.count = 0 | |
| def printoutput(self, event): | |
| sys.stdout.flush() | |
| print self.widget.data[int(0.5+event.ydata), int(0.5+event.xdata)] | |
| sys.stdout.flush() | |
| def output(self): | |
| print ui.textEdit.toPlainText() | |
| self.count += 1 | |
| self.widget.Plot() | |
| self.widget.draw() | |
| try: | |
| app = QtGui.QApplication(sys.argv) | |
| except RuntimeError: | |
| pass | |
| MainWindow = QtGui.QMainWindow() | |
| ui = Ui_MainWindow() | |
| ui.setupUi(MainWindow) | |
| MainWindow.show() | |
| app.exec_() | |
| # one nice thing is that 'ui' will still contain values created during execution of the gui (including data) |
Also, you need
import matplotlib
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Great piece! But I think the beginning should read:
import sys
from PySide import QtCore, QtGui
import numpy as np
from matplotlib import rcParams
rcParams['backend.qt4']='PySide'
from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.figure import Figure
...
because here it complains about not having imported neither matplotlib nor numpy. After this small modification everything works as expected :)