wxPython/demo/PyPlot.py

   1
   2 import  wx
   3
   4 hadImportError = False
   5 try:
   6     import  wx.lib.plot
   7 except ImportError:
   8     hadImportError = True
   9
  10
  11 ################################################################\
  12 # Where's the code???                                           |
  13 #                                                               |
  14 # wx.lib.plot.py came with its own excellent demo built in,     |
  15 # for testing purposes, but it serves quite well to demonstrate |
  16 # the code and classes within, so we are simply borrowing that  |
  17 # code for the demo. Please load up wx.lib.plot.py for a review |
  18 # of the code itself. The demo/test is at the bottom of         |
  19 # the file, as expected.                                        |
  20 ################################################################/
  21
  22 #---------------------------------------------------------------------------
  23
  24 class TestPanel(wx.Panel):
  25     def __init__(self, parent, log):
  26         self.log = log
  27         wx.Panel.__init__(self, parent, -1)
  28
  29         b = wx.Button(self, -1, "Show the PyPlot sample", (50,50))
  30         self.Bind(wx.EVT_BUTTON, self.OnButton, b)
  31
  32
  33     def OnButton(self, evt):
  34         win = wx.lib.plot.TestFrame(self, -1, "PlotCanvas Demo")
  35         win.Show()
  36
  37 #---------------------------------------------------------------------------
  38
  39
  40 def runTest(frame, nb, log):
  41     if not hadImportError:
  42         win = TestPanel(nb, log)
  43     else:
  44         from Main import MessagePanel
  45         win = MessagePanel(nb, """\
  46 This demo requires the Numeric or numarray module,
  47 which could not be imported.  It probably is not installed
  48 (it's not part of the standard Python distribution). See the
  49 Python site (http://www.python.org) for information on
  50 downloading source or binaries.""",
  51                            'Sorry', wx.ICON_WARNING)
  52
  53     return win
  54
  55
  56 #----------------------------------------------------------------------
  57
  58 if hadImportError:
  59     overview = ""
  60 else:
  61     overview = """\
  62 <html><body>
  63 <center><h2>PyPlot</h2></center>
  64
  65 This demo illustrates the features of the new PyPlot modules, found
  66 in wx.lib.plot.py. All methods and functions are documented clearly
  67 therein; only the overview is included here.
  68
  69 <p>
  70 PyPlot is an improvement over wxPlotCanvas, which is now deprecated.
  71 If you are using wxPlotCanvas now, please make plans to migrate in
  72 anticipation of the time that wxPlotCanvas disappears completely.
  73
  74 <p>
  75 The demo illustrates four different plot styles (with appropriate
  76 variations on fonts, etc, to show how flexible it is) as well as
  77 provides you with a means to tinker with all the features that
  78 come with the class itself.
  79
  80 <p><ul>
  81 <li>File Menu
  82
  83     <ul>
  84     <li>Page Setup
  85
  86         <p>This allows you to set up how the plot will be printed. This
  87         is built into the library itself.
  88
  89     <li>Print Preview
  90
  91         <p>As you might expect, this allows you to preview how the plot
  92         will look when printed, in light of the page setup you may
  93         have selected above.
  94
  95     <li>Print
  96
  97         <p>Surprise! It prints the current plot to your printer! :-)
  98
  99     <li>Save Plot
 100
 101         <p>That's right, the library even provides you with the means
 102         to export the plotted data out to a graphics file. Several
 103         formats are allowed for, basically any image class that
 104         supports saving.
 105     </ul>
 106
 107 <li>Plot Menu
 108
 109     <ul>
 110     <li>Plot 1 ... Plot 5
 111
 112         <p>Different data with different plot formats, including one empty
 113         plot.
 114
 115     <li>Enable Zoom
 116
 117         <p>If Zoom is enabled, you can rubber-band select an area of the
 118         plot to examine it in detail using the left mouse button. Right
 119         mouse button zooms back out. This is automatically supported
 120         by the library, all you have to do is turn it on.
 121
 122     <li>Enable Grid
 123
 124         <p>Plots can have different styles of grids, and and these grids can
 125         be turned on or off as needed.
 126
 127     <li>Enable Legend
 128
 129         <p>Plot can have legends or not, the contents which are definable
 130         by you.
 131     </ul>
 132 </ul>
 133
 134 <HR><pre>
 135 %s</pre>
 136 </body></html>
 137 """ % wx.lib.plot.__doc__
 138
 139
 140 if __name__ == '__main__':
 141     import sys,os
 142     import run
 143     run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])
 144