src/plugins/Ui/skinned/eqgraph.cpp



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/***************************************************************************
 *   Copyright (C) 2006-2009 by Ilya Kotov                                 *
 *   forkotov02@ya.ru                                                      *
 *                                                                         *
 *   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.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
 ***************************************************************************/
#include <QPainter>

#include "skin.h"
#include "eqgraph.h"

EQGraph::EQGraph (QWidget *parent)
        : PixmapWidget (parent)
{
    m_skin = Skin::instance();
    setPixmap (m_skin->getEqPart (Skin::EQ_GRAPH));
    clear();
    m_ratio = m_skin->ratio();
    draw();
    connect (m_skin, SIGNAL (skinChanged()), this, SLOT (updateSkin()));
    setVisible(!m_skin->getEqPart (Skin::EQ_GRAPH).isNull());
}

EQGraph::~EQGraph()
{}

void EQGraph::addValue (int value)
{
    if (m_values.size() >= 10)
        return;
    m_values.append (value);
    if (m_values.size() == 10)
    {
        draw();
    }
}

void EQGraph::clear ()
{
    m_values.clear();
    update();
}

void EQGraph::init_spline (double * x, double * y, int n, double * y2)
{
    int i, k;
    double p, qn, sig, un, *u;

    u = new double[n];

    y2[0] = u[0] = 0.0;