# wxPython Image Processing Application v. 0.0.1

# Created by:  Nathan Jennings
# Updated: 03.18.2007
# nate@deltateck.com
# www.jenningsplanet.com

# Uses wxPython, Python, and eventually the Python Imaging Library

# Code based from wxPython fundamentals found on the www.wxPython.org site
# and the wxPython in Action text

## wxPython in Action
## By Noel Rappin and Robin Dunn
## Published: March 2006, 620 pages
## Published by Manning Publications
## ISBN: 1932394621 

# Additions from code snippets found on the net.  Documented as best as possible.

## I am hoping to add copiously to this as time affords to provide some basic
## image processing routines for remotely sensed imagery.
## The following is the basic shell routines, then I hope to add classes of image
## processing functions

#!/usr/bin/env python2.4     ###this makes it nice for non-Windows Users

import wx
import images     # a python script found in the same directory as the Image Processing script
                  # needed to do the AddSimple Tool piece.
                  # originated from the wxPython in Action scripts

USE_BUFFERED_DC = 1     # flag used for the drawing of the imagery in the frame

class MyFrame(wx.Frame):
       def __init__(self, parent, id, title):
           wx.Frame.__init__(self, parent, id, title, size = (800, 600))

           #panel = wx.Panel(self)		# main panel
           #panel.SetBackgroundColour('White')
           statusBar = self.CreateStatusBar()    # create status bar (at the bottom)
           toolbar = self.CreateToolBar()        # create a tool bar (at top)
           toolbar.AddSimpleTool(wx.NewId(), images.getNewBitmap(),    
               "New", "Long help for 'New'")                  # create a simple tool
           toolbar.Realize()                 # make the tool show up

           menuBar = wx.MenuBar()            # create a menu bar (at top)
           menu1 = wx.Menu()                 # create a new menu 
           menuOpen = menu1.Append(wx.NewId(), "Open", "Open an Image File")
           menuTest = menu1.Append(wx.NewId(), "Test", "Load My Image")
           menuExit = menu1.Append(wx.NewId(), "Exit", "")
           menuBar.Append(menu1, "&File")    # create a new menu item "File"
           menu2 = wx.Menu()	              # create a second menu
           menu2.Append(wx.NewId(), "&Copy", "Copy in status bar")
           menu2.Append(wx.NewId(), "C&ut", "")
           menu2.Append(wx.NewId(), "Paste", "")
           menu2.AppendSeparator()           # add a separator
           menu2.Append(wx.NewId(), "&Options...", "Display Options")
           menuBar.Append(menu2, "&Edit")
        
           """Image Utilities Menu"""
        
           menu3 = wx.Menu()
           menu3.Append(wx.NewId(), "Subset", "")
           menu3.Append(wx.NewId(), "Convert", "")
           menuBar.Append(menu3, "Image Utilities")

           """Enhancement Menu"""
           menu4 = wx.Menu()
           menu4.Append(wx.NewId(), "Contrast Stretch", "")
           menu4.Append(wx.NewId(), "Principal Components", "")
           menuBar.Append(menu4, "Image Enhancement")

           """Help Menu"""
           menu5 = wx.Menu()
           menu5.Append(wx.NewId(), "Help", "")
           menuAbout = menu5.Append(wx.NewId(), "About", "")
        
           menuBar.Append(menu5, "Help")

           self.SetMenuBar(menuBar)          # make the menu bar show up

           """Run Specific Events on the Buttons"""
           self.Bind(wx.EVT_MENU, self.OnAbout, menuAbout)
           self.Bind(wx.EVT_MENU, self.OnExit, menuExit)
           self.Bind(wx.EVT_MENU, self.openNew, menuOpen)
           #self.Bind(wx.EVT_MENU, self.Test, menuTest)
              
           #self.bitmap = wx.Bitmap('c:\\gis_programming\\python\\remote_sensing\\memento.png')
           #self.bitmap = wx.Bitmap('c:\\pictures\\julia_thumb.jpg')
           #wx.EVT_PAINT(self, self.OnPaint)
           #self.Refresh()
           #self.Center()
   
       ## 03.18.2007 Update
       ## This should bring up an image browser or 
       ## a dialog box to ask for an image file...possibly PIL kinds
       ## then actually open the file and draw it.

       ## Will also need to do some fit image to window and scrolling mechanisms

       def openNew(self,event):
           print "In Open New"          
           imagefile = "c:\\remote_sensing_images\\franfurt_1mtc.jpg"
           self.bitmap = wx.Bitmap(imagefile)
           wx.EVT_PAINT(self, self.OnPaint)   # Call the paint routine, then refresh the
                                              # frame to show the selected image
           
           self.Refresh()   # Redraw the image in the frame, so you can see it
   
       def OnPaint(self, event):
           #print "In On Paint"
           dc = wx.PaintDC(self)
           #dc.DrawBitmap(self.bitmap, 60, 20)
           dc.Clear()

           ## Code below comes from Chris Barker 1/27/03 Chris.Barker@noaa.gov
           ## http://wiki.wxpython.org/index.cgi/DoubleBufferedDrawing
           ## used on 03.18.2007...Thanks for the help!
           if USE_BUFFERED_DC:
               #dc = wx.BufferedPaintDC(self, self._Buffer)
               dc = wx.BufferedPaintDC(self, self.bitmap)
           else:
               dc = wx.PaintDC(self)
               #dc.DrawBitmap(self._Buffer,0,0)
               dc.DrawBitmap(self.bitmap, 0, 0)
           # Don't do self.Refresh() here.  It flickers infinitely
       

       def OnAbout(self, event):
        
        dlg = wx.MessageBox("Created by:  Nathan Jennings\n"
            "Updated: 03.18.07\n"
            "v. 0.0.1\n\n"
            "Developed in:  Python, wxPython, and Python Image Library (PIL)\n\n"
            "This program provides a framework for some\n"
            "basic image processing routines related to\n"
            "remotely sensed imagery.\n\n"
            "email me at the address below with any problems\n"
            "or questions.\n\n"
            "nate@deltateck.com",
            "About", wx.OK | wx.ICON_QUESTION)


       def OnExit (self, event):
           self.Destroy()
           print "Exited the Application"
   
class MyApp(wx.App):
       def OnInit(self):
           frame = MyFrame(None, -1, 'Image Processing wxPython v. 0.0.1')
           frame.Show(True)
           self.SetTopWindow(frame)
           return True
   
app = MyApp(0)
app.MainLoop()