Add stuff to support new bitmap format.

Add bitmap_viewer program (to run OUTSIDE of chroot) and example bitmaps (to
be replaced by the REAL bitmaps for each platform).

BUG=chromium-os:10949
TEST=none

These are just nonessential tools and examples. No regression testing needed.

Change-Id: I7f9aab30809251e4c62d71bfa73293d0b4d97196

Review URL: http://codereview.chromium.org/6598046

scripts/newbitmaps/lib/pixcontrol.py

@@ -0,0 +1,102 @@
+#!/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.
+
+"""Edit buttons for bmpblock object"""
+
+import wx
+
+class Frame(wx.Frame):
+
+  def __init__(self, bmpblock=None, title=None):
+    wx.Frame.__init__(self, None, wx.ID_ANY, title, size=(200,400))
+    menuFile = wx.Menu()
+    m_about = menuFile.Append(wx.ID_ANY, "About...\tCtrl+A")
+    menuFile.AppendSeparator()
+    m_reload = menuFile.Append(wx.ID_ANY, "Reload\tCtrl+R")
+    m_quit = menuFile.Append(wx.ID_ANY, "Quit\tCtrl+Q")
+    menuBar = wx.MenuBar()
+    menuBar.Append(menuFile, "&File")
+    self.SetMenuBar(menuBar)
+    self.CreateStatusBar()
+    self.Bind(wx.EVT_MENU, self.OnAbout, m_about)
+    self.Bind(wx.EVT_MENU, self.OnReload, m_reload)
+    self.Bind(wx.EVT_MENU, self.OnQuit, m_quit)
+    self.Bind(wx.EVT_CLOSE, self.OnQuit)
+
+    acctbl = wx.AcceleratorTable([
+      (wx.ACCEL_CTRL, ord('A'), m_about.GetId()),
+      (wx.ACCEL_CTRL, ord('R'), m_reload.GetId()),
+      (wx.ACCEL_CTRL, ord('Q'), m_quit.GetId())
+      ])
+
+    self.SetAcceleratorTable(acctbl)
+
+    # create UI components
+    panel = wx.Panel(self)
+    button_reload = wx.Button(panel, label="Reload File")
+    self.screenlist = wx.ListBox(panel, wx.ID_ANY)
+
+    # connect events
+    self.Bind(wx.EVT_BUTTON, self.OnReload, button_reload)
+    self.Bind(wx.EVT_LISTBOX, self.OnSelected, self.screenlist)
+    self.Bind(wx.EVT_IDLE, self.OnIdle)
+
+    # place the componenents
+    sizer = wx.BoxSizer(wx.VERTICAL)
+    sizer.Add(button_reload)
+    sizer.Add(wx.StaticText(panel, wx.ID_ANY, "Screens"))
+    sizer.Add(self.screenlist, 1, wx.EXPAND)
+
+    panel.SetSizer(sizer)
+    panel.Fit()
+
+    # now, what are we looking at?
+    self.bmpblock = bmpblock
+    self.UpdateControls()
+    self.do_update = True
+    self.screenlist.SetFocus()
+
+  def OnAbout(self, event):
+    """Display basic information about this application."""
+    msg = ("Yes, all this does right now is display the screens from the config"
+           " file. You still have to edit, save, and reload in order to see any"
+           " changes. Learning python and wxpython is my 20% project (actually"
+           " it's more like 5%). Feel free to improve things.\n\t-- bill")
+    wx.MessageBox(msg, "About", wx.OK | wx.ICON_INFORMATION, self)
+
+  def OnQuit(self, event):
+    """Close all application windows and quit."""
+    wx.GetApp().ExitMainLoop()
+
+  def OnReload(self, event):
+    """Tell the model object to refresh the view that the user sees.
+    FIXME: The model itself should know to do this without being told.
+    """
+    self.bmpblock.Reload()
+    self.do_update = True;
+    self.UpdateControls()
+
+  def OnSelected(self, event):
+    """User may have picked one of the pulldowns."""
+    if event.IsSelection():
+      self.bmpblock.current_screen = event.GetString()
+      self.do_update = True
+    event.Skip()
+
+  def UpdateControls(self):
+    """Reload all the buttons with the current model information."""
+    screens = self.bmpblock.yaml["screens"]
+    self.screenlist.Clear()
+    self.screenlist.AppendItems(sorted(screens.keys()))
+    current = self.bmpblock.current_screen
+    self.screenlist.SetStringSelection(current)
+    self.SetStatusText(self.bmpblock.filename)
+
+  def OnIdle(self, event=None):
+    """What to do, what to do..."""
+    if self.do_update:
+      # FIXME: The model should know when to do this itself, right?
+      self.bmpblock.Redisplay()
+      self.do_update = False