#!/usr/bin/env python3
'''
pylibcoopgamma -- Python library for interfacing with cooperative gamma servers
Copyright (C) 2016  Mattias Andrée (maandree@kth.se)

This library is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this library.  If not, see <http://www.gnu.org/licenses/>.
'''

import os, sys, time, errno

os.chdir('/'.join(sys.argv[0].split('/')[:-1]))
sys.path.append('../bin')

import libcoopgamma
cg = libcoopgamma

if len(sys.argv) == 1:
    
    print('\033[1m%s:\033[m' % 'Methods')
    for m in cg.get_methods():
        print(m)
    print()
    
    print('\033[1m%s:\033[m' % 'Method')
    print(cg.get_method_and_site()[0])
    print()
    
    print('\033[1m%s:\033[m' % 'Site')
    print(cg.get_method_and_site()[1])
    print()
    
    print('\033[1m%s:\033[m' % 'PID file')
    print(cg.get_pid_file())
    print()
    
    print('\033[1m%s:\033[m' % 'Socket')
    print(cg.get_socket_file())
    print()
    
    g = cg.Context()
    g.connect()
    g.detach()
    gstr = repr(g)
    del g
    
    argv0 = './' + sys.argv[0].split('/')[-1]
    os.execl(argv0, argv0, gstr)
else:
    g = eval(sys.argv[1])
    g.attach()

print('\033[1m%s:\033[m' % 'CRTC:s')
crtcs = g.get_crtcs_sync()
for crtc in crtcs:
    print(crtc)
print()

info = g.get_gamma_info_sync(crtc)
print('\033[1m%s:\033[m' % 'CRTC info')
print('Cooperative:', 'yes' if info.cooperative else 'no')
if info.depth is not None:
    print('Depth:', cg.Depth.str(info.depth))
print('Supported:', cg.Support.str(info.supported))
if info.red_size is not None:
    print('Red stops:', info.red_size)
if info.green_size is not None:
    print('Green stops:', info.green_size)
if info.blue_size is not None:
    print('Blue stops:', info.blue_size)
print('Colourspace:', cg.Colourspace.str(info.colourspace))
if info.gamut is not None:
    print('Red point:', str(info.gamut.red))
    print('Green point:', str(info.gamut.green))
    print('Blue point:', str(info.gamut.blue))
    print('White point:', str(info.gamut.white))
print()

table = g.get_gamma_sync(cg.FilterQuery(crtc = crtc, coalesce = False))
print('\033[1m%s:\033[m' % 'Filter table')
print('Red stops:', table.red_size)
print('Green stops:', table.green_size)
print('Blue stops:', table.blue_size)
print('Depth:', cg.Depth.str(table.depth))
for i, fltr in enumerate(table.filters):
    print('Filter %i:' % i)
    print('  Priority:', fltr.priority)
    print('  Class:', fltr.fclass)
    print('  Ramps:')
    rr, gr, br = fltr.ramps.red, fltr.ramps.green, fltr.ramps.blue
    n = max(len(rr), len(gr), len(br))
    fmt = '    \033[31m%s \033[32m%s \033[34m%s\033[m'
    rr = [str(rr[i]) if i < len(rr) else '' for i in range(n)]
    gr = [str(gr[i]) if i < len(gr) else '' for i in range(n)]
    br = [str(br[i]) if i < len(br) else '' for i in range(n)]
    for y in zip(rr, gr, br):
        print(fmt % y)
print()

table = g.get_gamma_sync(cg.FilterQuery(crtc = crtc, coalesce = True))
print('\033[1m%s:\033[m' % 'Filter table')
print('Red stops:', table.red_size)
print('Green stops:', table.green_size)
print('Blue stops:', table.blue_size)
print('Depth:', cg.Depth.str(table.depth))
for fltr in table.filters:
    print('Ramps:')
    rr, gr, br = fltr.ramps.red, fltr.ramps.green, fltr.ramps.blue
    n = max(len(rr), len(gr), len(br))
    fmt = '  \033[31m%s \033[32m%s \033[34m%s\033[m'
    rr = [str(rr[i]) if i < len(rr) else '' for i in range(n)]
    gr = [str(gr[i]) if i < len(gr) else '' for i in range(n)]
    br = [str(br[i]) if i < len(br) else '' for i in range(n)]
    for y in zip(rr, gr, br):
        print(fmt % y)
print()

fltr = cg.Filter(0, crtc, 'pylibcoopgamma::test::test', cg.Lifespan.UNTIL_DEATH, table.depth,
                 cg.Ramps(table.red_size, table.green_size, table.blue_size))

if table.depth < 0:
    Y = lambda x : x
else:
    m = 2 ** table.depth - 1
    Y = lambda x : int(x * m)

redzero = fltr.ramps.red
greenzero = fltr.ramps.green

fltr.ramps.red = [Y(x / (table.red_size - 1)) for x in range(table.red_size)]
g.set_gamma_sync(fltr)
time.sleep(0.5)

fltr.ramps.red = redzero
fltr.ramps.green = [Y(x / (table.green_size - 1)) for x in range(table.green_size)]
g.set_gamma_sync(fltr)
time.sleep(0.5)

fltr.ramps.green = greenzero
fltr.ramps.blue = [Y(x / (table.blue_size - 1)) for x in range(table.blue_size)]
g.set_gamma_sync(fltr)
time.sleep(0.5)

g.set_nonbreaking(False)

async = cg.AsyncContext()

def flush(e):
    if e.errno in (errno.EINTR, errno.EWOULDBLOCK, errno.EAGAIN):
        while True:
            try:
                g.flush()
            except OSError as ex:
                if ex.errno in (errno.EINTR, errno.EWOULDBLOCK, errno.EAGAIN):
                    continue
                else:
                    raise ex
            break
    else:
        raise e

try:
    g.get_crtcs_send(async)
except OSError as e:
    flush(e)
if g.synchronise([async]) != 0:
     sys.exit(1)
if g.get_crtcs_recv(async) != crtcs:
    sys.exit(2)

try:
    g.get_gamma_info_send(crtc, async)
except OSError as e:
    flush(e)
if g.synchronise([async]) != 0:
     sys.exit(3)
info2 = g.get_gamma_info_recv(async)
if info2.cooperative != info.cooperative:
    sys.exit(4)
if info2.depth != info.depth:
    sys.exit(4)
if info2.supported != info.supported:
    sys.exit(4)
if info2.red_size != info.red_size:
    sys.exit(4)
if info2.green_size != info.green_size:
    sys.exit(4)
if info2.blue_size != info.blue_size:
    sys.exit(4)
if info2.colourspace != info.colourspace:
    sys.exit(4)
if (info2.gamut is None) != (info.gamut is None):
    sys.exit(4)
if info.gamut is not None:
    if info2.gamut.red.x_raw != info.gamut.red.x_raw or info2.gamut.red.x != info.gamut.red.x:
        sys.exit(4)
    if info2.gamut.red.y_raw != info.gamut.red.y_raw or info2.gamut.red.y != info.gamut.red.y:
        sys.exit(4)
    if info2.gamut.green.x_raw != info.gamut.green.x_raw or info2.gamut.green.x != info.gamut.green.x:
        sys.exit(4)
    if info2.gamut.green.y_raw != info.gamut.green.y_raw or info2.gamut.green.y != info.gamut.green.y:
        sys.exit(4)
    if info2.gamut.blue.x_raw != info.gamut.blue.x_raw or info2.gamut.blue.x != info.gamut.blue.x:
        sys.exit(4)
    if info2.gamut.blue.y_raw != info.gamut.blue.y_raw or info2.gamut.blue.y != info.gamut.blue.y:
        sys.exit(4)
    if info2.gamut.white.x_raw != info.gamut.white.x_raw or info2.gamut.white.x != info.gamut.white.x:
        sys.exit(4)
    if info2.gamut.white.y_raw != info.gamut.white.y_raw or info2.gamut.white.y != info.gamut.white.y:
        sys.exit(4)

del g