#!/usr/bin/env python

# (c) 2007  Simon Budig  <simon@budig.de>

# Minutenstrich: 2 x 5
# Stundenstrich: 4 x 15
# Viertelstundenstrich: 4 x 17.5
# 
# Minutenzeiger: 4 x (15 + 55 + rechter Winkel)
# Stundenzeiger: 7 x (15 + 37.5 + rechter Winkel)
# 
# Aussenradius Markierungen: 60
# Radius insgesamt: 70

import gobject, gtk, cairo
import math, time

class Values(object):
   pass

def key_press_event (win, event, val):
   if event.string in ['q', 'Q']:
      gtk.main_quit ()
   elif event.string in ['s', 'S']:
      val.show_seconds = not val.show_seconds
      gobject.source_remove (val.timeout)
      if (val.show_seconds):
         val.timeout = gobject.timeout_add (40, update_time, val)
      else:
         val.timeout = gobject.timeout_add (250, update_time, val)
   elif event.string in ['b', 'B']:
      val.border = not val.border
      win.set_decorated (val.border)
      win.hide ()
      win.show ()
   elif event.string in ['f', 'F']:
      val.full = not val.full
      if val.full:
         win.fullscreen ()
      else:
         win.unfullscreen ()
   else:
      return False

   return True


def update_time (val):
   val.win.queue_draw ()
   return True

def expose_event (win, event, val):
   w, h = win.get_size ()

   cr = win.window.cairo_create ()
   cr.rectangle (*event.area)
   cr.clip ()
   cr.paint ()

   cr.translate (w/2.0, h/2.0)
   cr.scale (min (w/2., h/2.), -min (w/2., h/2.))
   cr.scale (1./75, 1./75)

   cr.set_source_rgb (0.3, 0.3, 0.3)
   cr.arc (0, 0, 70, 0, 2 * math.pi)
   cr.fill ()
   cr.set_source_rgb (1.0, 1.0, 1.0)
   cr.arc (0, 0, 60 + 20./3, 0, 2 * math.pi)
   cr.fill ()
   cr.set_source_rgb (0.8, 0.8, 0.8)
   cr.arc (0, 0, 60 + 10./3, 0, 2 * math.pi)
   cr.fill ()

   cr.set_source_rgb (0.15, 0.15, 0.15)

   for i in range (60):
      cr.save ()
      cr.rotate (i * 6. / 180 * math.pi)
      if i % 15 == 0:
         cr.rectangle (60-17.5, -2, 17.5, 4)
      elif i % 5 == 0:
         cr.rectangle (60-15, -2, 15, 4)
      else:
         cr.rectangle (60-5, -1, 5, 2)
      cr.fill ()
      cr.restore ()

   t = time.localtime()
   s = t[5] + time.time() % 1
   if val.show_seconds:
      m = t[4]
   else:
      m = t[4] + s / 60.
   h = t[3] % 12 + m / 60.

   cr.set_source_rgb (0.1, 0.1, 0.1)
   cr.save ()
   cr.rotate ((90 - h * 30) / 180 * math.pi)
   cr.move_to (-15, 3.5)
   cr.line_to (37.5, 3.5)
   cr.line_to (41, 0)
   cr.line_to (37.5, -3.5)
   cr.line_to (-15, -3.5)
   cr.close_path ()
   cr.fill ()
   cr.restore ()

   cr.set_source_rgb (0.05, 0.05, 0.05)
   cr.save ()
   cr.rotate ((90 - m * 6.) / 180 * math.pi)
   cr.move_to (-15, 2)
   cr.line_to (55, 2)
   cr.line_to (57, 0)
   cr.line_to (55, -2)
   cr.line_to (-15, -2)
   cr.close_path ()
   cr.fill ()
   cr.restore ()

   if val.show_seconds:
      s, ds = divmod (min (60., s / 58.5*60), 1)
      if ds < 0.5:
         ds = (ds*2)**2 / 2
      else:
         ds = 1 - ((1-ds)*2)**2 / 2

      cr.set_source_rgb (0.9, 0.1, 0.1)
      cr.save ()
      cr.rotate ((90 - (s+ds) * 6) / 180 * math.pi)
      cr.arc (35, 0, 7, 0, 2 * math.pi)
      cr.arc_negative (35, 0, 4, 2 * math.pi, 0)
      cr.move_to (-16, -1.5)
      cr.line_to (30, -1.03)
      cr.line_to (30, 1.03)
      cr.line_to (-16, 1.5)
      cr.new_sub_path ()
      cr.move_to (40, -0.93)
      cr.line_to (57.25, -0.75)
      cr.line_to (58, 0)
      cr.line_to (57.25, 0.75)
      cr.line_to (40, 0.93)
      cr.close_path ()
      cr.fill ()
      cr.restore ()

   cr.save()
   cr.arc (0, 0, 65, 0, 2*math.pi)
   cr.clip ()
   cr.set_source_rgba (1.0, 1.0, 1.0, 0.3)
   cr.arc (50, -140, 160, 0, 2*math.pi)
   cr.fill ()

   cr.restore()

   return True


def setup_ui (val):
   win = gtk.Window ()
   win.style.bg[0] = gtk.gdk.Color(0,0,0)
   win.style.bg[1] = gtk.gdk.Color(0,0,0)
   win.style.bg[2] = gtk.gdk.Color(0,0,0)
   win.style.bg[3] = gtk.gdk.Color(0,0,0)
   win.style.bg[4] = gtk.gdk.Color(0,0,0)
   win.set_default_size (150, 150)
   win.set_decorated (False)

   win.set_events (gtk.gdk.EXPOSURE_MASK | gtk.gdk.KEY_PRESS_MASK)

   win.connect ("expose-event", expose_event, val)
   win.connect ("key-press-event", key_press_event, val)
   win.connect ("delete-event", gtk.main_quit)

   win.show_all ()

   val.full = False
   val.show_seconds = False
   val.border = False
   val.win = win


if __name__=='__main__':
   val = Values ()
   setup_ui (val)
   val.timeout = gobject.timeout_add (250, update_time, val)
   gtk.main ()