/* $Id: FilterBlueScreen.cpp 22330 2009-08-10 00:07:34Z campbellbarton $
-----------------------------------------------------------------------------
This source file is part of VideoTexture library

Copyright (c) 2007 The Zdeno Ash Miklas

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.

This program 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/lesser.txt.
-----------------------------------------------------------------------------
*/


#include <PyObjectPlus.h>
#include <structmember.h>

#include "FilterBlueScreen.h"

#include "FilterBase.h"
#include "PyTypeList.h"

// implementation FilterBlueScreen

// constructor
FilterBlueScreen::FilterBlueScreen (void)
{
	// set color to blue
	setColor(0, 0, 255);
	// set limits
	setLimits(64, 64);
}

// set color
void FilterBlueScreen::setColor (unsigned char red, unsigned char green, unsigned char blue)
{
	m_color[0] = red;
	m_color[1] = green;
	m_color[2] = blue;
}

// set limits for color variation
void FilterBlueScreen::setLimits (unsigned short minLimit, unsigned short maxLimit)
{
	m_limits[0] = minLimit;
	m_limits[1] = maxLimit > minLimit ? maxLimit : minLimit;
	// calculate square values
	for (short idx = 0; idx < 2; ++idx)
		m_squareLimits[idx] = m_limits[idx] * m_limits[idx];
	// limits distance
	m_limitDist = m_squareLimits[1] - m_squareLimits[0];
}



// cast Filter pointer to FilterBlueScreen
inline FilterBlueScreen * getFilter (PyFilter * self)
{ return static_cast<FilterBlueScreen*>(self->m_filter); }


// python methods and get/sets

// get color
static PyObject * getColor (PyFilter * self, void * closure)
{
	return Py_BuildValue("[BBB]", getFilter(self)->getColor()[0],
		getFilter(self)->getColor()[1], getFilter(self)->getColor()[2]);
}

// set color
static int setColor (PyFilter * self, PyObject * value, void * closure)
{
	// check validity of parameter
	if (value == NULL || !PySequence_Check(value) || PySequence_Length(value) != 3
		|| !PyLong_Check(PySequence_Fast_GET_ITEM(value, 0))
		|| !PyLong_Check(PySequence_Fast_GET_ITEM(value, 1))
		|| !PyLong_Check(PySequence_Fast_GET_ITEM(value, 2)))
	{
		PyErr_SetString(PyExc_TypeError, "The value must be a sequence of 3 ints");
		return -1;
	}
	// set color
	getFilter(self)->setColor((unsigned char)(PyLong_AsSsize_t(PySequence_Fast_GET_ITEM(value, 0))),
		(unsigned char)(PyLong_AsSsize_t(PySequence_Fast_GET_ITEM(value, 1))),
		(unsigned char)(PyLong_AsSsize_t(PySequence_Fast_GET_ITEM(value, 2))));
	// success
	return 0;
}

// get limits
static PyObject * getLimits (PyFilter * self, void * closure)
{
	return Py_BuildValue("[II]", getFilter(self)->getLimits()[0],
		getFilter(self)->getLimits()[1]);
}

// set limit
static int setLimits (PyFilter * self, PyObject * value, void * closure)
{
	// check validity of parameter
	if (value == NULL || !PySequence_Check(value) || PySequence_Length(value) != 2
		|| !PyLong_Check(PySequence_Fast_GET_ITEM(value, 0))
		|| !PyLong_Check(PySequence_Fast_GET_ITEM(value, 1)))
	{
		PyErr_SetString(PyExc_TypeError, "The value must be a sequence of 2 ints");
		return -1;
	}
	// set limits
	getFilter(self)->setLimits((unsigned short)(PyLong_AsSsize_t(PySequence_Fast_GET_ITEM(value, 0))),
		(unsigned short)(PyLong_AsSsize_t(PySequence_Fast_GET_ITEM(value, 1))));
	// success
	return 0;
}


// attributes structure
static PyGetSetDef filterBSGetSets[] =
{ 
	{(char*)"color", (getter)getColor, (setter)setColor, (char*)"blue screen color", NULL},
	{(char*)"limits", (getter)getLimits, (setter)setLimits, (char*)"blue screen color limits", NULL},
	// attributes from FilterBase class
	{(char*)"previous", (getter)Filter_getPrevious, (setter)Filter_setPrevious, (char*)"previous pixel filter", NULL},
	{NULL}
};

// define python type
PyTypeObject FilterBlueScreenType =
{ 
	PyVarObject_HEAD_INIT(NULL, 0)
	"VideoTexture.FilterBlueScreen",   /*tp_name*/
	sizeof(PyFilter),          /*tp_basicsize*/
	0,                         /*tp_itemsize*/
	(destructor)Filter_dealloc,/*tp_dealloc*/
	0,                         /*tp_print*/
	0,                         /*tp_getattr*/
	0,                         /*tp_setattr*/
	0,                         /*tp_compare*/
	0,                         /*tp_repr*/
	0,                         /*tp_as_number*/
	0,                         /*tp_as_sequence*/
	0,                         /*tp_as_mapping*/
	0,                         /*tp_hash */
	0,                         /*tp_call*/
	0,                         /*tp_str*/
	0,                         /*tp_getattro*/
	0,                         /*tp_setattro*/
	0,                         /*tp_as_buffer*/
	Py_TPFLAGS_DEFAULT,        /*tp_flags*/
	"Filter for Blue Screen objects",       /* tp_doc */
	0,		               /* tp_traverse */
	0,		               /* tp_clear */
	0,		               /* tp_richcompare */
	0,		               /* tp_weaklistoffset */
	0,		               /* tp_iter */
	0,		               /* tp_iternext */
	NULL,                /* tp_methods */
	0,                   /* tp_members */
	filterBSGetSets,           /* tp_getset */
	0,                         /* tp_base */
	0,                         /* tp_dict */
	0,                         /* tp_descr_get */
	0,                         /* tp_descr_set */
	0,                         /* tp_dictoffset */
	(initproc)Filter_init<FilterBlueScreen>,     /* tp_init */
	0,                         /* tp_alloc */
	Filter_allocNew,           /* tp_new */
};