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//=========================================================
// MusE
// Linux Music Editor
// $Id: ./muse/arranger/trackautomationview.cpp $
//
// Copyright (C) 1999-2011 by Werner Schweer and others
//
// 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; 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 "trackautomationview.h"
#include "math.h"
#include <QPainter>
#include <QPaintEvent>
#include "track.h"
namespace MusEGui {
TrackAutomationView::TrackAutomationView(QWidget *parent, MusECore::Track *t) : QWidget(parent)
{
printf("created trackautomationview\n");
_t = t;
//show();
}
void TrackAutomationView::paintEvent(QPaintEvent* e)
{
QPainter p(this);
const QRect &r = e->rect();
// temporary solution, audio track drawing moved here.
// best would be to get transparency to work correctly
p.setPen(QPen(Qt::black, 2, Qt::SolidLine));
p.setBrush(Qt::gray);
p.drawRect(r);
int height=r.bottom()-r.top();
if( _t->type()>1) { // audio type
double volume = ((AudioTrack*)_t)->volume();
double dbvolume = (20.0*log10(volume)+60) /70.0; // represent volume between 0 and 1
if (dbvolume < 0) dbvolume =0.0;
printf("height=%d volume=%f dbvolume=%f\n", height, volume, dbvolume);
p.setPen(QPen(Qt::yellow,1,Qt::SolidLine));
p.drawLine(r.left(),r.bottom()-dbvolume*height,r.right(),r.bottom()-dbvolume*height);
}
printf("paintEvent\n");
}
void TrackAutomationView::collectAutomationData()
{
// here we should collect all automation data that is currently selected for viewing and
// prepare an event list that is easy to draw in paintEvent
// the main reason being that the event list in it's entirety likely contains too much data to
// be processed in the paintEvent. Better to preprocess.
// CtrlListList cll =((AudioTrack*)_t)->controller();
// cll.count()
}
} // namespace MusEGui
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