src/plugins/Ui/skinned/mainvisual.cpp



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/***************************************************************************
 *   Copyright (C) 2007-2021 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 <QTimer>
#include <QSettings>
#include <QPainter>
#include <QMenu>
#include <QActionGroup>
#include <qmmp/buffer.h>
#include <qmmp/qmmp.h>
#include <math.h>
#include <stdlib.h>
#include "skin.h"
#include "fft.h"
#include "inlines.h"
#include "mainvisual.h"

MainVisual *MainVisual::m_instance = nullptr;

MainVisual *MainVisual::instance()
{
    if (!m_instance)
        qFatal ("MainVisual: this object is not created!");
    return m_instance;
}

MainVisual::MainVisual (QWidget *parent) : Visual (parent), m_vis (nullptr)
{
    m_skin = Skin::instance();
    m_ratio = m_skin->ratio();
    connect(m_skin, SIGNAL(skinChanged()), this, SLOT(readSettings()));
    m_timer = new QTimer (this);
    connect(m_timer, SIGNAL (timeout()), this, SLOT (timeout()));
    m_instance = this;
    m_update = false;
    m_running = false;
    createMenu();
    readSettings();
}

MainVisual::~MainVisual()
{
    writeSettings();
    if (m_vis)
    {
        delete m_vis;
        m_vis = nullptr;
    }
    m_instance = nullptr;
}

void MainVisual::setVisual (VisualBase *newvis)
{
    m_timer->stop();
    if (m_vis)
        delete m_vis;
    m_vis = newvis;
    if (m_vis)
        m_timer->start();
    else
    {
        m_pixmap.fill (Qt::transparent);
        update();
    }
}

void MainVisual::clear()
{
    if (m_vis)
        m_vis->clear();
    m_pixmap = m_bg;
    update();
}

void MainVisual::timeout()
{
    if(m_vis && takeData(m_buffer))
    {
        m_vis->process(m_buffer);
        m_pixmap = m_bg;
        QPainter p(&m_pixmap);
        m_vis->draw (&p);
        update();
    }
}

void MainVisual::paintEvent (QPaintEvent *)
{
    QPainter painter (this);
    painter.drawPixmap (0,0, m_pixmap);
}

void MainVisual::hideEvent (QHideEvent *)
{
    m_timer->stop();
}

void MainVisual::showEvent (QShowEvent *)
{
    if (m_vis && m_running)
        m_timer->start();
}

void MainVisual::mousePressEvent (QMouseEvent *e)
{
    if (e->button() == Qt::RightButton)
        m_menu->exec(e->globalPos());
    else
    {
        m_pixmap = m_bg;
        if (!m_vis)
            setVisual(new mainvisual::Analyzer);
        else if (m_vis->name() == "Analyzer")
            setVisual(new mainvisual::Scope);
        else if (m_vis->name() == "Scope")
            setVisual(nullptr);

        QString str = m_vis ? m_vis->name() : "Off";
        for(QAction *act : m_visModeGroup->actions())
        {
            if (str == act->data().toString())
            {
                act->setChecked(true);
                break;
            }
        }
        writeSettings();
    }
}

void MainVisual::start()
{
    m_running = true;
    if(isVisible())
        m_timer->start();
}

void MainVisual::stop()
{
    m_running = false;
    m_timer->stop();
    clear();
}

void MainVisual::drawBackGround()
{
    m_bg = QPixmap (76 * m_ratio, 16 * m_ratio);
    if (m_transparentAction->isChecked())
    {
        m_bg.fill (Qt::transparent);
        return;
    }
    QPainter painter(&m_bg);
    for (int x = 0; x < 76 * m_ratio; x += 2)
    {
        painter.setPen(m_skin->getVisColor(0));
        painter.drawLine(x + 1, 0, x + 1, 16 *m_ratio);
        for (int y = 0; y < 16 *m_ratio; y += 2)
        {
            painter.setPen(m_skin->getVisColor(0));
            painter.drawPoint(x,y);
            painter.setPen(m_skin->getVisColor(1));
            painter.drawPoint(x,y + 1);
        }
    }
}

void MainVisual::writeSettings()
{
    QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
    settings.beginGroup("Skinned");
    QAction *act = m_peaksFalloffGroup->checkedAction ();
    settings.setValue("vis_peaks_falloff", act ? act->data().toDouble() : 0.2);
    act = m_analyzerFalloffGroup->checkedAction ();
    settings.setValue("vis_analyzer_falloff", act ? act->data().toDouble() : 2.2);

    settings.setValue("vis_show_peaks", m_peaksAction->isChecked());

    act = m_analyzerModeGroup->checkedAction();
    settings.setValue("vis_analyzer_mode", act ? act->data().toInt() : 0);
    act = m_analyzerTypeGroup->checkedAction();
    settings.setValue("vis_analyzer_type", act ? act->data().toInt() : 1);
    settings.setValue("vis_transparent_bg", m_transparentAction->isChecked());

    act = m_visModeGroup->checkedAction ();
    settings.setValue("vis_type", act ? act->data().toString() : "Off");

    act = m_fpsGroup->checkedAction();
    settings.setValue("vis_rate", act ? act->data().toInt() : 25);
}

void MainVisual::createMenu()
{
    m_menu = new QMenu (this);
    connect(m_menu, SIGNAL(triggered (QAction *)),SLOT(writeSettings()));
    connect(m_menu, SIGNAL(triggered (QAction *)),SLOT(readSettings()));
    QMenu *visMode = m_menu->addMenu(tr("Visualization Mode"));
    m_visModeGroup = new QActionGroup(this);
    m_visModeGroup->setExclusive(true);
    m_visModeGroup->addAction(tr("Analyzer"))->setData("Analyzer");
    m_visModeGroup->addAction(tr("Scope"))->setData("Scope");
    m_visModeGroup->addAction(tr("Off"))->setData("Off");
    for(QAction *act : m_visModeGroup->actions())
    {
        act->setCheckable(true);
        visMode->addAction(act);
    }

    QMenu *analyzerMode = m_menu->addMenu(tr("Analyzer Mode"));
    m_analyzerModeGroup = new QActionGroup(this);
    m_analyzerTypeGroup = new QActionGroup(this);
    m_analyzerModeGroup->addAction(tr("Normal"))->setData(0);
    m_analyzerModeGroup->addAction(tr("Fire"))->setData(1);
    m_analyzerModeGroup->addAction(tr("Vertical Lines"))->setData(2);
    m_analyzerTypeGroup->addAction(tr("Lines"))->setData(0);
    m_analyzerTypeGroup->addAction(tr("Bars"))->setData(1);
    for(QAction *act : m_analyzerModeGroup->actions())
    {
        act->setCheckable(true);
        analyzerMode->addAction(act);
    }
    analyzerMode->addSeparator ();
    for(QAction *act : m_analyzerTypeGroup->actions())
    {
        act->setCheckable(true);
        analyzerMode->addAction(act);
    }
    analyzerMode->addSeparator ();
    m_peaksAction = analyzerMode->addAction(tr("Peaks"));
    m_peaksAction->setCheckable(true);


    QMenu *refreshRate = m_menu->addMenu(tr("Refresh Rate"));
    m_fpsGroup = new QActionGroup(this);
    m_fpsGroup->setExclusive(true);
    m_fpsGroup->addAction(tr("50 fps"))->setData(50);
    m_fpsGroup->addAction(tr("25 fps"))->setData(25);
    m_fpsGroup->addAction(tr("10 fps"))->setData(10);
    m_fpsGroup->addAction(tr("5 fps"))->setData(5);
    for(QAction *act : m_fpsGroup->actions())
    {