src/plugins/General/streambrowser/translations/streambrowser_plugin_cs.ts


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE TS>
<TS version="2.0" language="cs">
<context>
    <name>StreamBrowser</name>
    <message>
        <location filename="../streambrowser.cpp" line="33"/>
        <source>Stream Browser</source>
        <translation>Prohlížeč proudů</translation>
    </message>
    <message>
        <location filename="../streambrowser.cpp" line="35"/>
        <source>Ctrl+U</source>
        <translation>Ctrl+U</translation>
    </message>
</context>
<context>
    <name>StreamBrowserFactory</name>
    <message>
        <location filename="../streambrowserfactory.cpp" line="30"/>
        <source>Stream Browser Plugin</source>
        <translation>Modul prohlížeče proudů</translation>
    </message>
    <message>
        <location filename="../streambrowserfactory.cpp" line="51"/>
        <source>About Stream Browser Plugin</source>
        <translation>O modulu prohlížeče proudů</translation>
    </message>
    <message>
        <location filename="../streambrowserfactory.cpp" line="52"/>
        <source>Qmmp Stream Browser Plugin</source>
        <translation>Modul Qmmp na prohlížení proudů</translation>
    </message>
    <message>
        <location filename="../streambrowserfactory.cpp" line="53"/>
        <source>This plugin allows one to add stream from IceCast stream directory</source>
        <translation>Tento modul umožňuje přidat proud z adresáře proudů IceCast</translation>
    </message>
    <message>
        <location filename="../streambrowserfactory.cpp" line="54"/>
        <source>Written by: Ilya Kotov &lt;forkotov02@ya.ru&gt;</source>
        <translation type="unfinished"></translation>
    </message>
</context>
<context>
    <name>StreamWindow</name>
    <message>
        <location filename="../streamwindow.ui" line="14"/>
        <source>Stream Browser</source>
        <translation>Prohlížeč proudů</translation>
    </message>
    <message>
        <location filename="../streamwindow.ui" line="31"/>
        <source>Filter:</source>
        <translation>Filtr:</translation>
    </message>
    <message>
        <location filename="../streamwindow.ui" line="47"/>
        <source>Favorites</source>
        <translation>Oblíbené</translation>
    </message>
    <message>
        <location filename="../streamwindow.ui" line="73"/>
        <source>IceCast</source>
        <translation>IceCast</translation>
    </message>
    <message>
        <location filename="../streamwindow.ui" line="102"/>
        <source>Add</source>
        <translation>Přidat</translation>
    </message>
    <message>
        <location filename="../streamwindow.ui" line="109"/>
        <source>Update</source>
        <translation>Aktualizovat</translation>
    </message>
    <message>
        <location filename="../streamwindow.cpp" line="51"/>
        <location filename="../streamwindow.cpp" line="69"/>
        <source>Name</source>
        <translation>Název</translation>
    </message>
    <message>
        <location filename="../streamwindow.cpp" line="52"/>
        <location filename="../streamwindow.cpp" line="70"/>
        <source>Genre</source>
        <translation>Žánr</translation>
    </message>
    <message>
        <location filename="../streamwindow.cpp" line="53"/>
        <location filename="../streamwindow.cpp" line="71"/>
        <source>Bitrate</source>
        <translation>Datový tok</translation>
    </message>
    <message>
        <location filename="../streamwindow.cpp" line="54"/>
        <location filename="../streamwindow.cpp" line="72"/>
        <source>Format</source>
        <translation>Formát</translation>
    </message>
    <message>
        <location filename="../streamwindow.cpp" line="125"/>
        <source>&amp;Add to favorites</source>
        <translation>Přidat k &amp;oblíbeným</translation>
    </message>
    <message>
        <location filename="../streamwindow.cpp" line="126"/>
        <source>&amp;Add to playlist</source>
        <translation>Přidat do &amp;seznamu</translation>
    </message>
    <message>
        <location filename="../streamwindow.cpp" line="131"/>
        <source>&amp;Remove</source>
        <translation>Odst&amp;ranit</translation>
    </message>
    <message>
        <location filename="../streamwindow.cpp" line="141"/>
        <source>Done</source>
        <translation>Hotovo</translation>
    </message>
    <message>
        <location filename="../streamwindow.cpp" line="144"/>
        <location filename="../streamwindow.cpp" line="145"/>
        <source>Error</source>
        <translation>Chyba</translation>
    </message>
    <message>
        <location filename="../streamwindow.cpp" line="164"/>
        <source>Receiving</source>
        <translation>Příjímám</translation>
    </message>
</context>
</TS>
/***************************************************************************
 *   Copyright (C) 2020 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 <QPaintEvent>
#include <QSettings>
#include <QToolTip>
#include <QMenu>
#include <QAction>
#include <QMutexLocker>
#include <cmath>
#include <qmmp/soundcore.h>
#include <qmmp/inputsource.h>
#include <qmmp/decoder.h>
#include <qmmp/decoderfactory.h>
#include <qmmp/audioconverter.h>
#include <qmmp/buffer.h>
#include <qmmpui/metadataformatter.h>
#include "qsuiwaveformseekbar.h"

#define NUMBER_OF_VALUES (4096)

QSUiWaveformSeekBar::QSUiWaveformSeekBar(QWidget *parent) : QWidget(parent)
{
    m_core = SoundCore::instance();
    connect(m_core, SIGNAL(stateChanged(Qmmp::State)), SLOT(onStateChanged(Qmmp::State)));
    connect(m_core, SIGNAL(elapsedChanged(qint64)), SLOT(onElapsedChanged(qint64)));
    createMenu();
    readSettings();
}

QSize QSUiWaveformSeekBar::sizeHint() const
{
    return QSize(200, 100);
}

void QSUiWaveformSeekBar::readSettings()
{
    QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
    settings.beginGroup("Simple");
    m_bgColor.setNamedColor(settings.value("wfsb_bg_color", "Black").toString());
    m_rmsColor.setNamedColor(settings.value("wfsb_rms_color", "#DDDDDD").toString());
    m_waveFormColor.setNamedColor(settings.value("wfsb_waveform_color", "#BECBFF").toString());
    m_progressBar.setNamedColor(settings.value("wfsb_progressbar_color", "#9633CA10").toString());
    if(!m_update)
    {
        m_update = true;
        m_showTwoChannelsAction->setChecked(settings.value("wfsb_show_two_channels", true).toBool());
        m_showRmsAction->setChecked(settings.value("wfsb_show_rms", true).toBool());
    }
    settings.endGroup();
    drawWaveform();
}


void QSUiWaveformSeekBar::onStateChanged(Qmmp::State state)
{
    switch (state)
    {
    case Qmmp::Playing:
    {
        if(!m_scanner && isVisible() && m_data.isEmpty())
        {
            m_scanner = new QSUiWaveformScanner(this);
            connect(m_scanner, SIGNAL(finished()), SLOT(onScanFinished()));
            connect(m_scanner, SIGNAL(dataChanged()), SLOT(onDataChanged()));
        }
        if(m_scanner)
            m_scanner->scan(m_core->path());
    }
        break;
    case Qmmp::Stopped:
    case Qmmp::FatalError:
    case Qmmp::NormalError:
    {
        if(m_scanner)
        {
            m_scanner->stop();
            delete m_scanner;
            m_scanner = nullptr;
        }
        m_data.clear();
        m_elapsed = 0;
        m_duration = 0;
        drawWaveform();
    }
        break;
    default:
        break;
    }
}

void QSUiWaveformSeekBar::onScanFinished()
{
    if(!m_scanner)
        return;

    m_data = m_scanner->data();
    m_channels = m_scanner->audioParameters().channels();
    delete m_scanner;
    m_scanner = nullptr;
    drawWaveform();
}

void QSUiWaveformSeekBar::onDataChanged()
{
    if(!m_scanner || !m_scanner->isRunning())
        return;

    m_data = m_scanner->data();
    m_channels = m_scanner->audioParameters().channels();
    drawWaveform();
}

void QSUiWaveformSeekBar::onElapsedChanged(qint64 elapsed)
{
    m_elapsed = elapsed;
    m_duration = m_core->duration();
    if(isVisible())
        update();
}

void QSUiWaveformSeekBar::writeSettings()
{
    QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
    settings.beginGroup("Simple");
    settings.setValue("wfsb_show_two_channels", m_showTwoChannelsAction->isChecked());
    settings.setValue("wfsb_show_rms", m_showRmsAction->isChecked());
    settings.endGroup();
    drawWaveform();
}

void QSUiWaveformSeekBar::paintEvent(QPaintEvent *e)
{
    QPainter painter (this);
    painter.fillRect(e->rect(), m_bgColor);

    if(!m_pixmap.isNull())
        painter.drawPixmap(0, 0, width(), height(), m_pixmap);

    if(m_duration > 0)
    {
        int x = m_pressedPos >= 0 ? m_pressedPos : (width() * m_elapsed / m_duration);
        QColor color = m_progressBar;
        QBrush brush(color);
        painter.fillRect(0, 0, x, height(), brush);
        color.setAlpha(255);
        painter.setPen(color);
        painter.drawLine(x, 0, x, height());
    }
}

void QSUiWaveformSeekBar::resizeEvent(QResizeEvent *)
{
    drawWaveform();
}

void QSUiWaveformSeekBar::showEvent(QShowEvent *)
{
    if(m_data.isEmpty() && (m_core->state() == Qmmp::Playing || m_core->state() == Qmmp::Paused))
        onStateChanged(Qmmp::Playing); //force redraw
}

void QSUiWaveformSeekBar::mousePressEvent(QMouseEvent *e)
{
    if(e->button() == Qt::LeftButton)
    {
        m_pressedPos = e->pos().x();
        update();
    }
    else if(e->button() == Qt::RightButton)
        m_menu->exec(e->globalPos());
}

void QSUiWaveformSeekBar::mouseReleaseEvent(QMouseEvent *)
{
    if(m_pressedPos >= 0)
    {
        if(m_duration > 0)
            m_core->seek(m_pressedPos * m_duration / width());
        m_pressedPos = -1;
    }
}

void QSUiWaveformSeekBar::mouseMoveEvent(QMouseEvent *e)
{
    if(m_pressedPos >= 0)
    {
        m_pressedPos = qBound(0, e->pos().x(), width());
        QToolTip::showText(mapToGlobal(e->pos()),
                           MetaDataFormatter::formatDuration(m_pressedPos * m_duration / width()),
                           this, QRect());
        update();
    }
}

void QSUiWaveformSeekBar::drawWaveform()
{
    if(m_data.isEmpty())
    {
        m_pixmap = QPixmap();
        update();
        return;
    }

    bool showTwoChannels = m_showTwoChannelsAction->isChecked();
    bool showRms = m_showRmsAction->isChecked();

    m_pixmap = QPixmap(width(), height());
    m_pixmap.fill(m_bgColor);

    float step = float(width()) / NUMBER_OF_VALUES;

    QPainter painter(&m_pixmap);
    painter.setPen(m_waveFormColor);
    painter.setBrush(m_waveFormColor);

    for(int i = 0; i < m_data.size() - m_channels * 3; i+=3)
    {
        int ch = (i / 3) % m_channels;
        float x1 = step * (i / m_channels / 3);
        float x2 = step * (i / m_channels / 3 + 1);
        bool draw = false;
        float zeroPos = 0, ratio = 0;
        if(ch == 0 && (m_channels == 1 || !showTwoChannels))
        {
            zeroPos = height() / 2;
            ratio = float(height() / 4) / 1000;
            draw = true;
        }
        else if(ch == 0 || (ch == 1 && showTwoChannels))
        {
            zeroPos = ((ch == 0) ? 1 : 3) * height() / 4;
            ratio = float(height() / 8) / 1000;
            draw = true;
        }

        if(draw)
        {
            float y1 = zeroPos - m_data[i] * ratio;
            float y2 = zeroPos - m_data[i + 1] * ratio;
            float y3 = zeroPos - m_data[i + m_channels * 3] * ratio;
            float y4 = zeroPos - m_data[i + m_channels * 3 + 1] * ratio;

            QPointF points[4] = {
                { x1, y1 },
                { x1, y2 },
                { x2, y4 },
                { x2, y3 }
            };

            painter.drawPolygon(points, 4);
        }
    }

    if(!showRms)
    {
        update();
        return;
    }

    painter.setPen(m_rmsColor);
    painter.setBrush(m_rmsColor);

    for(int i = 0; i < m_data.size() - m_channels * 3; i+=3)
    {
        int ch = (i / 3) % m_channels;
        float x1 = step * (i / m_channels / 3);
        float x2 = step * (i / m_channels / 3 + 1);
        bool draw = false;
        float zeroPos = 0, ratio = 0;
        if(ch == 0 && (m_channels == 1 || !showTwoChannels))
        {
            zeroPos = height() / 2;
            ratio = float(height() / 4) / 1000;
            draw = true;
        }
        else if(ch == 0 || (ch == 1 && showTwoChannels))
        {