Add "File->Save snapshot" menu item to export the displayed screen.

scripts/newbitmaps/lib/pixdisplay.py

 #!/usr/bin/python -tt
 # Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Display for bmpblock object."""
 import wx
 
 class MyPanel(wx.Panel):
 
@@ skipping 19 matching lines @@
         size = img.GetSize()
         self.SetMinSize(size)
         self.SetSize(size)
         self.Fit()
         w,h = self.parent.GetBestSize()
         self.parent.SetDimensions(-1, -1, w, h, wx.SIZE_AUTO)
         done_first = True
       bmp = img.ConvertToBitmap()
       dc.DrawBitmap(bmp, x, y)
 
+  def OnSave(self, name):
+    """Draw the current image sequence into a file."""
+    dc = wx.MemoryDC()
+    done_first = False
+    for x, y, filename in self.imglist:
+      img = wx.Image(filename, wx.BITMAP_TYPE_ANY)
+      if (not done_first):
+        w,h = img.GetSize()
+        base = wx.EmptyBitmap(w,h)
+        dc.SelectObject(base)
+        done_first = True
+      bmp = img.ConvertToBitmap()
+      dc.DrawBitmap(bmp, x, y)
+    new = wx.ImageFromBitmap(base)
+    outfile = name + '.png'
+    new.SaveFile(outfile, wx.BITMAP_TYPE_PNG)
+    print "wrote", outfile
+
 
 class Frame(wx.Frame):
 
   def __init__(self, bmpblock=None, title=None):
     wx.Frame.__init__(self, None, wx.ID_ANY, title=title)
     self.CreateStatusBar()
     self.SetStatusText(title)
     self.Bind(wx.EVT_CLOSE, self.OnQuit)
 
     self.bmpblock = bmpblock
     if self.bmpblock:
       self.bmpblock.RegisterScreenDisplayObject(self)
 
     self.p = MyPanel(self)
 
 
   def OnQuit(self, event):
     wx.GetApp().ExitMainLoop()
 
   def DisplayScreen(self, name, imglist):
     self.SetStatusText(name)
     self.p.imglist = imglist
     self.p.OnPaint()
+
+  def SaveScreen(self, name, imglist):
+    self.p.imglist = imglist
+    self.p.OnSave(name)