attachment:Image2PyFile_GUI.py of EmbeddingImagesInSource

   1 """
   2 Sample basic GUI app demo that invokes Image2PyFile.PY
   3 
   4 Passee on command line args to Image2PyFile.PY and display the results in a simple GUI.
   5 Mesages that are progress, actions, warnings and notes are shown in the left pane.
   6 Failure and error messages are shown on the right.
   7 
   8 Ray Pasco
   9 pascor(at)verizon(dot)net
  10 
  11 Version
  12     1.2.1   2012-04-29  The error textCtrl is now located underneath the stdout textCtrl.
  13     1.2     2012-04-26  Fixed bugs, added -Q, enable all messages option.
  14 
  15 """
  16 
  17 import sys, os
  18 import wx
  19 
  20 import Image2PyFile as i2p
  21 
  22 #------------------------------------------------------------------------------
  23 
  24 class RedirectOutput() :
  25     """
  26     Redirect print and write output to any control implementing method WriteText.
  27     
  28     Usage:
  29         stdoutTc = wx.TextCtrl( tcParent )
  30         
  31         sysStdoutSave = sys.stdout
  32         redirStd = RedirectOutput( stdoutTc )
  33         sys.stdout = redirStd
  34         
  35         ...
  36         
  37         # Undo the output redirection, if desired.
  38         sys.stdout = sysStdoutSave
  39     """
  40     
  41     # Created : Mike Driscoll 
  42     # Contact : mike@pythonlibrary.org
  43     # Website : ???
  44 
  45     def __init__( self, textDisplayControl ) :
  46         self.textOutWidget = textDisplayControl
  47 
  48     def write( self, s ) :
  49         self.textOutWidget.WriteText( s )
  50     
  51 #end RedirectOutput class
  52 
  53 DEBUG_REDIRECT_OUTPUT_TO_SHELL = 0
  54 
  55 #------------------------------------------------------------------------------
  56 #===============================================================================
  57 #------------------------------------------------------------------------------
  58 
  59 class AppFrame( wx.Frame ) :
  60  
  61     def __init__( self, args ) :
  62         DEBUG = 0
  63         
  64         wx.Frame.__init__( self, None, wx.ID_ANY, title='Image2PyFile GUI Demo' )
  65         self.SetClientSize( (750, 300) )
  66         self.SetPosition( (100, 0) )
  67     
  68         # Add a panel so the Frame looks and acts the same on all platforms.
  69         frmPanel = wx.Panel( self, -1 )
  70         
  71         # This implements an alternate very easy way to exist this app.
  72         frmPanel.Bind( wx.EVT_LEFT_DCLICK, self.OnExit )
  73         
  74         #-----
  75         
  76         stdoutTc_vertSizer = wx.BoxSizer( wx.VERTICAL )
  77         
  78         stdoutTc_stTxt = wx.StaticText( frmPanel, -1, 'Successful Operations' )
  79         stdoutTc_vertSizer.Add( stdoutTc_stTxt, 0, wx.ALL|wx.EXPAND, 5 )
  80         
  81         sharedTcStyle = wx.TE_MULTILINE|wx.TE_READONLY|wx.VSCROLL|wx.HSCROLL| wx.TE_RICH2
  82         
  83         stdoutTc = wx.TextCtrl( frmPanel, wx.NewId(), style=sharedTcStyle )
  84         stdoutTc.Bind( wx.EVT_LEFT_DCLICK, self.OnExit )
  85         # Create a monospaced font from the default.
  86         self.SetMonospaceFont( stdoutTc )
  87         
  88         stdoutTc_vertSizer.Add( stdoutTc, 1, wx.ALL|wx.EXPAND, 5 )
  89         
  90         #-----
  91         
  92         stderrTc_vertSizer = wx.BoxSizer( wx.VERTICAL )
  93         
  94         stderrTc_stTxt = wx.StaticText( frmPanel, -1, 'Failed Operations' )
  95         stderrTc_vertSizer.Add( stderrTc_stTxt, 0, wx.ALL|wx.EXPAND, 5 )
  96         
  97         stderrTc = wx.TextCtrl( frmPanel, wx.NewId(), style=sharedTcStyle )
  98         stderrTc.Bind( wx.EVT_LEFT_DCLICK, self.OnExit )
  99         # Create a monospaced font from the default.
 100         self.SetMonospaceFont( stderrTc )
 101         
 102         stderrTc_vertSizer.Add( stderrTc, 1, wx.ALL|wx.EXPAND, 5 )
 103         
 104         # Exit Button
 105         exitBtn = wx.Button( frmPanel, wx.ID_ANY, 'Exit' )
 106         exitBtn.Bind( wx.EVT_BUTTON, self.OnExit)
 107         
 108         # An overall sizer for the Frame client contents
 109         frmPanel_vertSizer = wx.BoxSizer( wx.VERTICAL )
 110         
 111         frmPanel_vertSizer.Add( stdoutTc_vertSizer, 1, wx.ALL|wx.EXPAND, 5 )
 112         frmPanel_vertSizer.Add( stderrTc_vertSizer, 1, wx.ALL|wx.EXPAND, 5 )
 113         
 114         frmPanel_vertSizer.Add( exitBtn, 0, wx.CENTER, 5 )
 115         frmPanel_vertSizer.Add( (10, 10) )
 116         frmPanel.SetSizer( frmPanel_vertSizer )
 117         
 118         #-----
 119         
 120         if DEBUG_REDIRECT_OUTPUT_TO_SHELL :     # DEBUG
 121             
 122             pass    # All output will normally go into textCtrl's by default.
 123             
 124         else :      
 125             
 126             # Redirect all text output from Image2PyFile.py to the textCtrl's.
 127             stdoutOrig, stderrOrig = sys.stdout, sys.stderr
 128             
 129             sys.stdout = RedirectOutput( stdoutTc )
 130             sys.stderr = RedirectOutput( stderrTc )
 131             
 132         #end if
 133         
 134         #-----
 135         
 136         # Process the command line, process  and display the results.
 137         i2p.Image2PyFile( args )         # All output info text will appear in the GUI.
 138         
 139         stdoutTc.SetInsertionPoint( 0 )    # Move the cursor back to the first line.
 140         stderrTc.SetInsertionPoint( 0 )
 141         
 142         # Show the error/failure messages pane if there are any messages.
 143         if (stderrTc.GetNumberOfLines() > 1) :        # Value of 1 == no lines of text.
 144             
 145             stderrTc_vertSizer.ShowItems( True )      # Make the err panel controls appear.
 146             
 147             # Resize the Frame's client area to also show TextCtrl.
 148             clientSizeX, clientSizeY = self.GetClientSize()
 149             stdoutTcWid, stdoutTcHgt = stdoutTc_vertSizer.GetSize()
 150             # Make more room to display the error staticText and its textCtrl.
 151             self.SetClientSize( (clientSizeX, clientSizeY+275) )
 152         
 153         else :  # Err messages panel will not be visible if there was no output to stderr.
 154             stderrTc_vertSizer.ShowItems( False )  
 155         #end if
 156         frmPanel_vertSizer.Layout()
 157         
 158         self.Show()
 159         
 160     #end __init__
 161     
 162     #------------------------
 163     
 164     def OnExit( self, event ) :
 165         """A "hook" to allow future cleanup operations to be performed."""
 166         
 167         self.Destroy()
 168     
 169     #------------------------
 170     
 171     def SetMonospaceFont( self, ctrl ) :
 172         
 173         # Retrieve the current font so we can use maost of its characteristics.
 174         ctrlFont = ctrl.GetFont()
 175         
 176         # Args:   wx.Font( pointSize, family, style, weight, underline, face, encoding )
 177         
 178         # Set the horizontal size in pixels, NOT points ! Vert size is about 11 pixels/char.
 179         fontSize = 9   
 180         if os.name == 'nt' :    # A more vertically compact font. Same horizontal spacing, though.
 181             ctrlFont = wx.Font( fontSize, wx.FONTFAMILY_MODERN, ctrlFont.GetStyle(), 
 182                                 ctrlFont.GetWeight(), ctrlFont.GetUnderlined(), "Lucida Console" )
 183         else :
 184             ctrlFont = wx.Font( fontSize, wx.FONTFAMILY_MODERN, ctrlFont.GetStyle(), 
 185                                 ctrlFont.GetWeight(), ctrlFont.GetUnderlined(), str(ctrlFont.GetEncoding()) )
 186         #end if
 187         ctrl.SetFont( ctrlFont )
 188         
 189     #end def
 190     
 191 #end AppFrame class
 192 
 193 #==============================================================================
 194 
 195 if __name__ == '__main__' :
 196     
 197     args = sys.argv[ 1: ]
 198     
 199     myApp = wx.App( redirect=True )
 200     appFrame = AppFrame( args )
 201     myApp.MainLoop()
 202     
 203 #end if