8000 added embedding in qt example · matplotlib/matplotlib@28641bc · GitHub
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added embedding in qt example
svn path=/trunk/matplotlib/; revision=1236
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‎CHANGELOG

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New entries should be added at the top
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2005-04-26 Added embedding in qt example.
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2005-04-14 Applied Michael Brady's qt backend patch: 1) fix a bug
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where keyboard input was grabbed by the figure and not

‎examples/embedding_in_qt.py

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#! /usr/bin/env python
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# Copyright (C) 2005 Florent Rougon
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#
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# This file is an example program for matplotlib. It may be used,
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# distributed and modified without limitation.
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import sys, os, random
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from qt import *
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from matplotlib.numerix import arange, sin, pi
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# The QApplication has to be created before backend_qt is imported, otherwise
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# it will create one itself.
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QApplication.setColorSpec(QApplication.NormalColor)
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app = QApplication(sys.argv)
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from matplotlib.backends.backend_qtagg import FigureCanvasQTAgg as FigureCanvas
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from matplotlib.figure import Figure
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TRUE = 1
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FALSE = 0
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progname = os.path.basename(sys.argv[0])
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progversion = "0.1"
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class FloMplCanvas(FigureCanvas):
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"""Ultimately, this is a qWidget (as well as a FigureCanvasAgg, etc.)."""
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def __init__(self, parent=None, width=5, height=4, dpi=100):
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self.fig = Figure(figsize=(width,height), dpi=dpi)
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self.axes = self.fig.add_subplot(111)
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self.compute_initial_figure()
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FigureCanvas.__init__(self, self.fig)
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self.reparent(parent, QPoint(0, 0))
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FigureCanvas.setSizePolicy(self,
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QSizePolicy.Expanding,
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QSizePolicy.Expanding)
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FigureCanvas.updateGeometry(self)
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def sizeHint(self):
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w, h = self.fig.get_width_height()
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return QSize(w, h)
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def minimumSizeHint(self):
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return QSize(10, 10)
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class FloCanvas1(FloMplCanvas):
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def compute_initial_figure(self):
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t = arange(0.0, 3.0, 0.01)
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s = sin(2*pi*t)
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self.axes.plot(t, s)
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class FloCanvas2(FloMplCanvas):
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def __init__(self, *args, **kwargs):
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FloMplCanvas.__init__(self, *args, **kwargs)
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timer = QTimer(self, "Canvas update timer")
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QObject.connect(timer, SIGNAL("timeout()"), self.update_figure)
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timer.start(1000, FALSE)
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def compute_initial_figure(self):
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self.axes.plot([0, 1, 2, 3], [1, 2, 0, 4], 'r')
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def update_figure(self):
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l = []
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for i in range(4):
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l.append(random.randint(0, 10))
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self.axes.lines = []
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self.axes.plot([0, 1, 2, 3], l, 'r')
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self.draw()
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class ApplicationWindow(QMainWindow):
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def __init__(self):
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QMainWindow.__init__(self, None,
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"application main window",
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Qt.WType_TopLevel | Qt.WDestructiveClose)
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self.file_menu = QPopupMenu(self)
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self.file_menu.insertItem('&Quit', self.fileQuit, Qt.CTRL + Qt.Key_Q)
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self.menuBar().insertItem('&File', self.file_menu)
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# self.file_menu.insertSeparator()
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self.help_menu = QPopupMenu(self)
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self.menuBar().insertSeparator()
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self.menuBar().insertItem('&Help', self.help_menu)
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self.help_menu.insertItem('&About', self.about)
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self.main_widget = QWidget(self, "Main widget")
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l = QVBoxLayout(self.main_widget)
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c1 = FloCanvas1(self.main_widget, width=5, height=4, dpi=100)
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c2 = FloCanvas2(self.main_widget, width=5, height=4, dpi=100)
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l.addWidget(c1)
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l.addWidget(c2)
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self.main_widget.setFocus()
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self.setCentralWidget(self.main_widget)
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self.statusBar().message("Ready", 2000)
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def fileQuit(self):
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qApp.exit(0)
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def closeEvent(self, ce):
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self.fileQuit()
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def about(self):
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QMessageBox.about(self, "About %s" % progname,
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"""%(prog)s version %(version)s
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Copyright (c) 2005 Florent Rougon
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This program is a monitor for the Conrad Charge Manager 2010
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""" % {"prog": progname, "version": progversion})
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def main():
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mw = ApplicationWindow()
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mw.setCaption("%s" % progname)
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qApp.setMainWidget(mw)
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mw.show()
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sys.exit(app.exec_loop())
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if __name__ == "__main__": main()

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