Added a demo-file to show how to use the FigureManager classes to

tacaswell · tacaswell · commit 37e600eafbbe · 2014-01-29T22:31:25.000-05:00
get pop-up graph windows as part of a larger gui application.
diff --git a/examples/user_interfaces/embedding_with_qt4_manager.py b/examples/user_interfaces/embedding_with_qt4_manager.py
@@ -0,0 +1,121 @@
+#!/usr/bin/env python
+
+# embedding_in_qt4.py --- Simple Qt4 application embedding matplotlib canvases
+#
+# Copyright (C) 2005 Florent Rougon
+#               2006 Darren Dale
+#
+# This file is an example program for matplotlib. It may be used and
+# modified with no restriction; raw copies as well as modified versions
+# may be distributed without limitation.
+
+from __future__ import unicode_literals, division
+import sys
+import os
+
+from matplotlib.backends.qt4_compat import QtCore, QtGui
+import numpy as np
+from matplotlib.backends._backend_qt4agg import (FigureCanvasQTAgg,
+                                                 FigureManagerQTAgg,
+                                                 new_figure_manager)
+
+from matplotlib.figure import Figure
+
+progname = os.path.basename(sys.argv[0])
+progversion = "0.1"
+
+
+def demo_plot(ax):
+    """
+    Plots sin waves with random period
+    """
+    k = np.random.random_integers(1, 10)
+    th = np.linspace(0, 2*np.pi, 1024)
+    ax.plot(th, np.sin(th * k))
+
+
+class ApplicationWindow(QtGui.QMainWindow):
+    def __init__(self):
+        # QT boiler plate to set up main window
+        QtGui.QMainWindow.__init__(self)
+        self.setAttribute(QtCore.Qt.WA_DeleteOnClose)
+        self.setWindowTitle("application main window")
+
+        self.file_menu = QtGui.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 = QtGui.QMenu('&Help', self)
+        self.menuBar().addSeparator()
+        self.menuBar().addMenu(self.help_menu)
+
+        self.help_menu.addAction('&About', self.about)
+
+        self.main_widget = QtGui.QWidget(self)
+
+        l = QtGui.QVBoxLayout(self.main_widget)
+        button = QtGui.QPushButton("make window A")
+        button.clicked.connect(self.new_window_hard_way)
+        l.addWidget(button)
+
+        buttonB = QtGui.QPushButton("make window B")
+        buttonB.clicked.connect(self.new_window_easy_way)
+        l.addWidget(buttonB)
+        self.main_widget.setFocus()
+        self.setCentralWidget(self.main_widget)
+        self._figs = []
+        self.statusBar().showMessage("All hail matplotlib!", 2000)
+
+    def new_window_hard_way(self):
+        # make a figure
+        fig = Figure()
+        # make a canvas
+        canvas = FigureCanvasQTAgg(fig)
+        # make a manager from the canvas
+        manager = FigureManagerQTAgg(canvas, 1)
+        # grab an axes in the figure
+        ax = fig.gca()
+        # plot some demo code
+        demo_plot(ax)
+        # show the window
+        manager.show()
+
+    def new_window_easy_way(self):
+        # make a new manager
+        manager = new_figure_manager(2)
+        # grab a reference to the figure
+        fig = manager.canvas.figure
+        # get an axes object in the figure
+        ax = fig.gca()
+        # plot some demo-data
+        demo_plot(ax)
+        # show the window
+        manager.show()
+
+    def fileQuit(self):
+        self.close()
+
+    def closeEvent(self, ce):
+        self.fileQuit()
+
+    def about(self):
+        QtGui.QMessageBox.about(self, "About",
+"""embedding_in_qt4.py example
+Copyright 2005 Florent Rougon, 2006 Darren Dale, 2013 Thomas Caswell
+
+This program is a simple example of a Qt4 application making use of
+the FigureManager class.
+
+It may be used and modified with no restriction; raw copies as well as
+modified versions may be distributed without limitation."""
+)
+
+
+qApp = QtGui.QApplication(sys.argv)
+
+aw = ApplicationWindow()
+aw.setWindowTitle("%s" % progname)
+aw.show()
+sys.exit(qApp.exec_())
+#qApp.exec_()
