#!/usr/bin/env python

try:   
  import gtk,gtk.glade
  import gobject
except:
  print "You do not have python gtk bindings, or you're missing glade libs"
  print "To use Lephisto's resedit you must install them"
  print "http://pygtk.org/ "
  raise SystemExit

import data

class space:

  def __init__(self):
     self.glade = "space.glade"
     self.systemsXML = "../../dat/ssys.xml"
     self.planetsXML = "../../dat/planet.xml"
     self.loadSystems(self.systemsXML)
     self.loadPlanets(self.planetsXML)

  def loadSystems(self, xmlfile):
    self.systems = data.load(xmlfile, "ssys", True, ["jumps","fleets","planets"])


  def saveSystems(self, xmlfile):
    data.save("ssys.xml", self.systems, "Systems", "ssys", True,
        { "jumps":"jump", "fleets":"fleet", "planets":"planet" })

  def loadPlanets(self, xmlfile):
    self.planets = data.load(xmlfile, "planet", True, ["commodities"])


  def savePlanets(self, xmlfile):
    data.save("planet.xml", self.planets, "Planets", "planet", True,
        { "commodities":"commodity" })

  def window(self):
    """
    create the window
    """
    # --------------- SYSTEMS --------------------
    self.swtree = gtk.glade.XML(self.glade, "winSystems")
    
    # Hook events and stuff.
    hooks = {
        "winSystems":["destroy",self.__done],
        "treSystems":["row-activated", self.__update],
        "butDone":["clicked", self.__done],
        "butSave":["clicked",self.saveSystems],
        "butZoomIn":["clicked", self.__space_zoomin],
        "butZoomOut":["clicked", self.__space_zoomout]
    }
    for key, val in hooks.items():
      self.__swidget(key).connect(val[0], val[1])

    # Populate the tree.
    self.tree_systems = gtk.TreeStore(str)
    for system in self.systems: # Load the planets.
      treenode = self.tree_systems.append(None, [system])
      for planet in self.systems[system]['planets']:
        self.tree_systems.append(treenode, [planet])
    col = gtk.TreeViewColumn('Systems')
    cell = gtk.CellRendererText()
    self.__swidget("treSystems").append_column(col)
    col.pack_start(cell, True)
    col.add_attribute(cell, 'text', 0)
    self.__swidget("treSystems").set_model(self.tree_systems)

    self.zoom = 1
    area = self.__swidget("draSpace")
    area.set_events(gtk.gdk.EXPOSURE_MASK
        | gtk.gdk.LEAVE_NOTIFY_MASK
        | gtk.gdk.BUTTON_PRESS_MASK
        | gtk.gdk.POINTER_MOTION_MASK
        | gtk.gdk.POINTER_MOTION_HINT_MASK)
    area.connect("expose-event", self.__space_draw)
    area.connect("button-press-event", self.__space_down)
    area.connect("motion-notify-event", self.__space_drag)

    # Display the window and such.
    self.__swidget("winSystems").show_all()
    self.cur_system = ""
    self.x = self.y = 0
    self.lx = self.ly = 0

    # ---------------- PLANETS --------------------

    # ---------------------------------------------
    gtk.main()


  def __swidget(self,wgtname):
    """
    get a widget from the winSystems
    """
    return self.swtree.get_widget(wgtname)


  def __update(self, wgt=None, index=None, iter=None):
    """
    Update the window
    """
    
    # Store the current values.
    self.__store();

    self.cur_system = self.__curSystem()
    system = self.systems[self.cur_system]

    # Load it all.
    dic = {
        "inpName":self.cur_system,
        "spiInterference":system["general"]["interference"],
        "spiAsteroids":system["general"]["asteroids"],
        "spiStars":system["general"]["stars"],
        "labPos":"%s,%s" % (system["pos"]["x"],system["pos"]["y"])
    }
    for key, value in dic.items():
      self.__swidget(key).set_text(value)

    # Load jumps.

    jumps = gtk.ListStore(str)
    for jump in system["jumps"]: # Load the planets.
      treenode = jumps.append([jump])
    col = gtk.TreeViewColumn('Jumps')
    cell = gtk.CellRendererText()
    wgt = self.__swidget("treJumps")
    if wgt.get_column(0):
      wgt.remove_column( wgt.get_column(0) )
    wgt.append_column(col)
    col.pack_start(cell, True)
    col.add_attribute(cell, 'text', 0)
    wgt.set_model(jumps)

    self.__space_draw()

  def __store(self):
    sys_name = self.__swidget("inpName").get_text()
    
    # Renamed the current system.
    if sys_name != self.cur_system:
      self.systems[sys_name] = self.systems[self.cur_system] # Copy it over.
      model = self.__swidget("treSystems").get_model()

      # Must rename the node in the treeview.
      for i in model:
        if i[0] == self.cur_system:
          i[0] = sys_name
          break

      # Update the jump paths.
      for key, value in self.systems.items():
        i = 0
        for jump in value["jumps"]:
          if jump == self.cur_system:
            self.systems[key]["jumps"].pop(i)
            self.systems[key]["Jumps"].append(sys_name)
          i = i+1

      # Delete the old system and change current to it.
      del self.systems[self.cur_system] # Get rid of the old one.
      self.cur_system = sys_name # Now use self.cur_system again.

    try:
      system = self.systems[self.cur_system]
    except:
      return # No system selected yet.
    
    # Start to load all the input stuff.
    # General crap.
    self.__sinpStore(system, "spiStars", "general", "stars")
    self.__sinpStore(system, "spiInterference", "general", "interference")
    self.__sinpStore(system, "spiAsteroids", "general", "asteroids")

  def __sinpStore(self, system, wgt, tag, minortag=None):
    text = self.__swidget(wgt).get_text()
    if minortag==None:
      system[tag] = text
    else:
      system[tag][minortag] = text

  def __curSystem(self):
    # Important thingies.
    tree = self.__swidget("treSystems")
    model = tree.get_model()
    iter = tree.get_selection().get_selected()[1]
    p = model.iter_parent(iter)
    if p == None:
      return model.get_value(iter, 0)
    else:
      return model.get_value(p, 0)

  def __done(self, widget=None, data=None):
    """
    Window is done
    """
    gtk.main_quit()

  def __space_down(self, wgt, event):
    if event.button == 1:
      x = event.x
      y = event.y

      # Modify the current position.
      if self.__swidget("butReposition").get_active() and self.cur_system != "":
        wx, wy, ww, wh = self.__swidget("draSpace").get_allocation()

        mx = x - (self.x*self.zoom + ww/2)
        my = y - (self.y*self.zoom + wh/2)

        system = self.systems[self.cur_system]
        system["pos"]["x"] = str(mx)
        system["pos"]["y"] = str(-my)

        self.__space_draw()

        self.__swidget("butReposition").set_active(False)

      self.lx = x
      self.ly = y
    return True

  def __space_drag(self, wgt, event):
    x = event.x
    y = event.y
    state = event.state

    wx, wy, ww, wh = self.__swidget("draSpace").get_allocation()

    mx = x - (self.x*self.zoom + ww/2)
    my = y - (self.y*self.zoom + wh/2)

    self.__swidget("labCurPos").set_text("%d%d" % (mx, my))

    if state & gtk.gdk.BUTTON1_MASK:
      xrel = x - self.lx
      yrel = y - self.ly
      self.x = self.x + xrel/self.zoom
      self.y = self.y + yrel/self.zoom
      self.lx = x
      self.ly = y

      self.__space_draw()

    return True

  def __space_zoomout(self, wgt=None, event=None):
    self.zoom = self.zoom/2
    if self.zoom < 0.1:
      self.zoom = 0.1
    self.__space_draw()

  def __space_zoomin(self, wgt=None, event=None):
    self.zoom = self.zoom*2
    if self.zoom > 4:
      self.zoom = 4
    self.__space_draw()

  def __space_draw(self, wgt=None, event=None):
    area = self.__swidget("draSpace")
    style = area.get_syle()
    gc = style.fg_gc[gtk.STATE_NORMAL]
    bg_gc = style.bg_gc[gtk.STATE_NORMAL]
    wx, wy, ww, wh = area.get_allocation()
    cx = self.x*self.zoom + ww/2
    cy = sefl.y*self.zoom + wh/2
    r = 15

    # Cleanup.
    area.window.draw_rectangle(bg_gc, True, 0, 0, ww, wh)
    area.window.draw_rectangle(gc, False, 0, 0, ww-1, wh-1)

    for sys_name, system in self.systems.items():
      sx = float(system["pos"]["x"])
      sy = -float(system["pos"]["y"])
      dx = cx+sx*self.zoom
      dy = cy+sy*self.zoom

      # Draw jumps.
      for jump in system["jumps"]:
        jsx = float(self.systems[jump]["pos"]["x"])
        jsy = -float(self.systems[jump]["pos"]["y"])
        jdx = cx+jsx*self.zoom
        jdy = cy+jsy*self.zoom

        area.window.draw_line(gc, dx, dy, jdx, jdy)

      # Draw circle.
      area.window.draw_arc(gc, True, dx-r/2, dy-r/2, r, r, 0, 360*64)
      area.window.draw_arc(bg_gc, True, dxr/2+2, dy-r/2+2, r-4, r-4, 0, 360*64)

      # Draw name.
      layout = area.create_pango_layout(sys_name)
      area.window.draw_layout(gc, dx+r/2+2, dy-r/2, layout)

  def debug(self):
    print "SYSTEMS LOADED:"
    print self.systems
    print
    print
    print "PLANETS LOADED:"
    print self.planets