//
//
// C++ Implementation: Sonogram
//
// Description:
//
//
// Author: Melchior FRANZ <mfranz@kde.org>, (C) 2004
//
// Copyright: See COPYING file that comes with this distribution
//
//

#include <qpainter.h>
#include "sonogram.h"

Sonogram::Sonogram(QWidget *parent) :
	Analyzer::Base2D(parent, 16, 9)
{
}


Sonogram::~Sonogram()
{
}


void Sonogram::init()
{
	eraseCanvas();
}


void Sonogram::resizeEvent(QResizeEvent *e)
{
	QWidget::resizeEvent(e);
	canvas()->resize(size());
	background()->resize(size());

//only for gcc < 4.0
#if !( __GNUC__ > 4 || ( __GNUC__ == 4 && __GNUC_MINOR__ >= 0 ) )
	resizeForBands(height());
#endif

	background()->fill(backgroundColor());
	bitBlt(canvas(), 0, 0, background());
	bitBlt(this, 0, 0, background());
}


void Sonogram::analyze(const Scope &s)
{
	int x = width() - 1;
	QColor c;
	QPainter p(canvas());

	bitBlt(canvas(), 0, 0, canvas(), 1, 0, x, height());
	Scope::const_iterator it = s.begin(), end = s.end();
	for (int y = height() - 1; y;) {
		if (it >= end || *it < .005)
			c = backgroundColor();
		else if (*it < .05)
			c.setHsv(95, 255, 255 - int(*it * 4000.0));
		else if (*it < 1.0)
			c.setHsv(95 - int(*it * 90.0), 255, 255);
		else
			c = Qt::red;

		p.setPen(c);
		p.drawPoint(x, y--);

		if (it < end)
			++it;
	}
}


void Sonogram::transform(Scope &scope)
{
	float *front = static_cast<float*>(&scope.front());
	m_fht->power2(front);
	m_fht->scale(front, 1.0 / 256);
	scope.resize( m_fht->size() / 2 );
}


void Sonogram::demo()
{
	analyze(Scope(m_fht->size(), 0));
}

