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/*
* Copyright (C) 2015, Mike Walters <mike@flomp.net>
*
* This file is part of inspectrum.
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include <QtWidgets>
#include "mainwindow.h"
MainWindow::MainWindow()
{
setWindowTitle(tr("inspectrum"));
scrollArea.setWidget(&spectrogram);
scrollArea.viewport()->installEventFilter(this);
setCentralWidget(&scrollArea);
dock = new SpectrogramControls(tr("Controls"), this);
dock->setAllowedAreas(Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea);
addDockWidget(Qt::LeftDockWidgetArea, dock);
connect(dock, SIGNAL(openFile(QString)), this, SLOT(openFile(QString)));
connect(dock->sampleRate, SIGNAL(textChanged(QString)), this, SLOT(setSampleRate(QString)));
connect(dock, SIGNAL(fftSizeChanged(int)), this, SLOT(setFFTSize(int)));
connect(dock->zoomLevelSlider, SIGNAL(valueChanged(int)), this, SLOT(setZoomLevel(int)));
connect(dock->powerMaxSlider, SIGNAL(valueChanged(int)), &spectrogram, SLOT(setPowerMax(int)));
connect(dock->powerMinSlider, SIGNAL(valueChanged(int)), &spectrogram, SLOT(setPowerMin(int)));
}
bool MainWindow::eventFilter(QObject * /*obj*/, QEvent *event)
{
if (event->type() == QEvent::Wheel) {
QWheelEvent *wheelEvent = (QWheelEvent*)event;
QSlider *slider = nullptr;
if (QApplication::keyboardModifiers() & Qt::ControlModifier) {
slider = dock->zoomLevelSlider;
} else if (QApplication::keyboardModifiers() & Qt::ShiftModifier) {
slider = dock->fftSizeSlider;
}
if (slider != nullptr) {
if (wheelEvent->angleDelta().y() > 0) {
slider->setValue(slider->value() + 1);
} else if (wheelEvent->angleDelta().y() < 0) {
slider->setValue(slider->value() - 1);
}
return true;
}
}
return false;
}
void MainWindow::setSampleRate(QString rate)
{
spectrogram.setSampleRate(rate.toInt());
}
void MainWindow::changeSampleRate(int rate)
{
spectrogram.setSampleRate(rate);
dock->sampleRate->setText(QString::number(rate));
}
void MainWindow::setFFTSize(int size)
{
off_t sample = getCenterSample();
spectrogram.setFFTSize(size);
scrollArea.verticalScrollBar()->setValue(getScrollPos(sample));
}
void MainWindow::setZoomLevel(int zoom)
{
off_t sample = getCenterSample();
spectrogram.setZoomLevel(zoom);
scrollArea.verticalScrollBar()->setValue(getScrollPos(sample));
}
off_t MainWindow::getCenterSample()
{
int height = scrollArea.height();
return (scrollArea.verticalScrollBar()->value() + height / 2) * spectrogram.getStride();
}
int MainWindow::getScrollPos(off_t sample)
{
int height = scrollArea.height();
return sample / spectrogram.getStride() - height / 2;
}
void MainWindow::openFile(QString fileName)
{
QString title="%1: %2";
this->setWindowTitle(title.arg(QApplication::applicationName(),fileName.section('/',-1,-1)));
spectrogram.openFile(fileName);
}
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