# ==============================================================================
"""COLORS : edit a color with RGB scales"""
# ==============================================================================
__author__  = "Christophe Schlick by Philippe Blasi"
__version__ = "0.0" # skeleton version
__date__    = "2022-11-12"
# ==============================================================================
from ezTK import *
# ------------------------------------------------------------------------------
def main():
  """create the main window and pack the widgets"""
  global win
  win = Win(title='COLORS', op=5)
  # ----------------------------------------------------------------------------
  # TODO (use 1 Frame, 1 Label, 3 Scales, 1 Brick)
  # ----------------------------------------------------------------------------

  frame = Frame(win, grow=False)
  Label(frame, text='#000000', width=9, border=1, grow=False)
  Scale(frame, scale=(0,255), troughcolor='#F00', show=False, state=0, command=on_scale)
  Scale(frame, scale=(0,255), troughcolor='#0F0', show=False, state=0, command=on_scale)
  Scale(frame, scale=(0,255), troughcolor='#00F', show=False, state=0, command=on_scale)

  Brick(win,bg='#000000',border=1, height=200)
  
  win.brick, win.label = win[1], frame[0]          # friendly names for all
  win.R, win.G, win.B = frame[1],frame[2],frame[3] # widgets used in callbacks
  win.loop()
# ------------------------------------------------------------------------------
def on_scale() -> None:
  """callback function for all three RGB scales"""
  # TODO (get current values for R,G,B scales and convert them to hexadecimal)
  # TODO (built color string '#RRGGBB' and update properties on Label and Brick)
  hexa = '0123456789ABCDEF'
  r = win.R.state
  g = win.G.state
  b = win.B.state

  r1,r2 = divmod(r,16)
  g1,g2 = divmod(g,16)
  b1,b2 = divmod(b,16)

  color = '#' + hexa[r1] + hexa[r2] + hexa[g1] + hexa[g2] + hexa[b1] + hexa[b2]

  win.brick['bg'] = color
  win.label['text'] = color 
# ==============================================================================
if __name__ == '__main__':
  main()
# ==============================================================================