#
# Copyright (C) 2009-2015 EPAM Systems
# 
# This file is part of Indigo toolkit.
# 
# This file may be distributed and/or modified under the terms of the
# GNU General Public License version 3 as published by the Free Software
# Foundation and appearing in the file LICENSE.GPL included in the
# packaging of this file.
# 
# This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
# WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

from indigo import *


class IndigoRenderer(object):
    def __init__(self, indigo):
        self.indigo = indigo

        if os.name == 'posix' and not platform.mac_ver()[0] and not platform.system().startswith("CYGWIN"):
            self._lib = CDLL(indigo.dllpath + "/libindigo-renderer.so")
        elif os.name == 'nt' or platform.system().startswith("CYGWIN"):
            self._lib = CDLL(indigo.dllpath + "\indigo-renderer.dll")
        elif platform.mac_ver()[0]:
            self._lib = CDLL(indigo.dllpath + "/libindigo-renderer.dylib")
        else:
            raise IndigoException("unsupported OS: " + os.name)

        self._lib.indigoRender.restype = c_int
        self._lib.indigoRender.argtypes = [c_int, c_int]
        self._lib.indigoRenderToFile.restype = c_int
        self._lib.indigoRenderToFile.argtypes = [c_int, c_char_p]
        self._lib.indigoRenderGrid.restype = c_int
        self._lib.indigoRenderGrid.argtypes = [c_int, POINTER(c_int), c_int, c_int]
        self._lib.indigoRenderGridToFile.restype = c_int
        self._lib.indigoRenderGridToFile.argtypes = [c_int, POINTER(c_int), c_int, c_char_p]
        self._lib.indigoRenderReset.restype = c_int
        self._lib.indigoRenderReset.argtypes = [c_int]

    def renderToBuffer(self, obj):
        self.indigo._setSessionId()
        wb = self.indigo.writeBuffer()
        try:
            self.indigo._checkResult(self._lib.indigoRender(obj.id, wb.id))
            return wb.toBuffer()
        finally:
            wb.dispose()

    def renderToFile(self, obj, filename):
        self.indigo._setSessionId()
        self.indigo._checkResult(self._lib.indigoRenderToFile(obj.id, filename.encode('ascii')))

    def renderGridToFile(self, objects, refatoms, ncolumns, filename):
        self.indigo._setSessionId()
        arr = None
        if refatoms:
            if len(refatoms) != objects.count():
                raise IndigoException("renderGridToFile(): refatoms[] size must be equal to the number of objects")
            arr = (c_int * len(refatoms))()
            for i in range(len(refatoms)):
                arr[i] = refatoms[i]
        self.indigo._checkResult(
            self._lib.indigoRenderGridToFile(objects.id, arr, ncolumns, filename.encode('ascii')))

    def renderGridToBuffer(self, objects, refatoms, ncolumns):
        self.indigo._setSessionId()
        arr = None
        if refatoms:
            if len(refatoms) != objects.count():
                raise IndigoException("renderGridToBuffer(): refatoms[] size must be equal to the number of objects")
            arr = (c_int * len(refatoms))()
            for i in range(len(refatoms)):
                arr[i] = refatoms[i]
        wb = self.indigo.writeBuffer()
        try:
            self.indigo._checkResult(
                self._lib.indigoRenderGrid(objects.id, arr, ncolumns, wb.id))
            return wb.toBuffer()
        finally:
            wb.dispose()