/************************************************************************
 ************************************************************************
    FAUST compiler
    Copyright (C) 2003-2018 GRAME, Centre National de Creation Musicale
    ---------------------------------------------------------------------
    This program 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 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 ************************************************************************
 ************************************************************************/

#include <iostream>

#include "enlargedSchema.h"
#include "exception.hh"

using namespace std;

/**
 * Returns an enlarged schema, but only if really needed
 * that is if the requiered width is greater that the schema width.
 */
schema* makeEnlargedSchema(schema* s, double width)
{
    if (width > s->width()) {
        return new enlargedSchema(s, width);
    } else {
        return s;
    }
}

/**
 * Put additional space left and right of a schema so that the result has
 * a certain width. The wires are prolonged accordingly.
 */
enlargedSchema::enlargedSchema(schema* s, double width)
    : schema(s->inputs(), s->outputs(), width, s->height()), fSchema(s)
{
    for (unsigned int i = 0; i < inputs(); i++) fInputPoint.push_back(point(0, 0));
    for (unsigned int i = 0; i < outputs(); i++) fOutputPoint.push_back(point(0, 0));
}

/**
 * Define the graphic position of the schema. Computes the graphic
 * position of all the elements, in particular the inputs and outputs.
 * This method must be called before draw(), otherwise draw is not allowed
 */
void enlargedSchema::place(double ox, double oy, int orientation)
{
    beginPlace(ox, oy, orientation);

    double dx = (width() - fSchema->width()) / 2;
    fSchema->place(ox + dx, oy, orientation);

    if (orientation == kRightLeft) {
        dx = -dx;
    }

    for (unsigned int i = 0; i < inputs(); i++) {
        point p        = fSchema->inputPoint(i);
        fInputPoint[i] = point(p.x - dx, p.y);  //, p.z);
    }

    for (unsigned int i = 0; i < outputs(); i++) {
        point p         = fSchema->outputPoint(i);
        fOutputPoint[i] = point(p.x + dx, p.y);  //, p.z);
    }

    endPlace();
}

/**
 * Returns an input point
 */
point enlargedSchema::inputPoint(unsigned int i) const
{
    faustassert(placed());
    faustassert(i < inputs());
    return fInputPoint[i];
}

/**
 * Returns an output point
 */
point enlargedSchema::outputPoint(unsigned int i) const
{
    faustassert(placed());
    faustassert(i < outputs());
    return fOutputPoint[i];
}

/**
 * Draw the enlarged schema. This methos can only
 * be called after the block have been placed
 */
void enlargedSchema::draw(device& dev)
{
    faustassert(placed());

    fSchema->draw(dev);
#if 0
    // draw enlarge input wires
    for (unsigned int i=0; i<inputs(); i++) {
        point p = inputPoint(i);
        point q = fSchema->inputPoint(i);
        if ( (p.z>=0) && (q.z>=0) ) dev.trait(p.x, p.y, q.x, q.y);
    }

    // draw enlarge output wires
    for (unsigned int i=0; i<outputs(); i++) {
        point p = outputPoint(i);
        point q = fSchema->outputPoint(i);
        if ( (p.z>=0) && (q.z>=0) ) dev.trait(p.x, p.y, q.x, q.y);
    }
#endif
}

/**
 * Draw the enlarged schema. This methos can only
 * be called after the block have been placed
 */
void enlargedSchema::collectTraits(collector& c)
{
    faustassert(placed());

    fSchema->collectTraits(c);

    // draw enlarge input wires
    for (unsigned int i = 0; i < inputs(); i++) {
        point p = inputPoint(i);
        point q = fSchema->inputPoint(i);
        c.addTrait(trait(p, q));  // in->out direction
    }

    // draw enlarge output wires
    for (unsigned int i = 0; i < outputs(); i++) {
        point q = fSchema->outputPoint(i);
        point p = outputPoint(i);
        c.addTrait(trait(q, p));  // in->out direction
    }
}
