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I've fully written out code for the base of the app and tested to to be

Browse Source 
working, also added svg icons to the user interface. the settings button
currently does nothing (still work in progress). during testing, i
discovered QMediaPlayer would have trouble playing some music files that
have an ID3 tag so AudFile was created as a way to read the size of the
ID3 tag and step over it when QMediaPlayer reads from the file. although
it fixed the playback issue, QMediaPlayer is now having trouble
calculating the duration properly without the tag. i already have a
solution to the porblem in mind, more to come in the next commit.
This commit is contained in:
Maurice O'Neal 2016-10-10 13:29:41 -04:00 committed by Maurice O'Neal
parent 455723cede
commit 10e5af0588
14 changed files with 582 additions and 77 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
JustAudio.pro
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@ -5,17 +5,21 @@
#-------------------------------------------------
QT += core gui
QT += multimedia
QT += svg
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
TARGET = JustAudio
TEMPLATE = app
SOURCES += main.cpp\
gui/ui.cpp\
gui/file_item.cpp
gui/icon.cpp \
io/aud_file.cpp
HEADERS += \
gui/ui.h \
gui/file_item.h
HEADERS += gui/ui.h\
gui/icon.h \
io/aud_file.h
RESOURCES += icon_files.qrc

6
gui/file_item.cpp
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@ -1,6 +0,0 @@
#include "file_item.h"
FileItem::FileItem(QWidget *parent) : QLabel(parent)
{
}

17
gui/file_item.h
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@ -1,17 +0,0 @@
#ifndef FILE_ITEM_H
#define FILE_ITEM_H
#include <QWidget>
#include <QLabel>
#include <QHBoxLayout>
class FileItem : public QLabel
{
Q_OBJECT
public:
FileItem(QWidget *parent = 0);
};
#endif // FILE_ITEM_H

83
gui/icon.cpp Normal file
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@ -0,0 +1,83 @@
#include "icon.h"
Icon::Icon(IconType t, QWidget *parent) : QLabel(parent)
{
QRect rect = QApplication::desktop()->screenGeometry();
setMinimumHeight(rect.height() / 40);
setMinimumWidth(rect.height() / 40);
setCursor(Qt::PointingHandCursor);
switch (t)
{
case PAUSE_PLAY: stateChanged(QMediaPlayer::StoppedState); break;
case SETTINGS: loadImg(":/settings"); break;
case OPEN: loadImg(":/open"); break;
}
type = t;
}
void Icon::mouseReleaseEvent(QMouseEvent *event)
{
if (event->button() == Qt::LeftButton)
{
switch (type)
{
case PAUSE_PLAY:
{
if (playerState == QMediaPlayer::PlayingState)
{
emit pause();
}
else
{
emit play();
}
break;
}
case SETTINGS:
{
emit settings();
break;
}
case OPEN:
{
emit open();
break;
}
}
}
}
void Icon::paintEvent(QPaintEvent *)
{
QPainter painter(this);
QSvgRenderer svg(svgFile, this);
svg.render(&painter);
}
void Icon::stateChanged(QMediaPlayer::State state)
{
playerState = state;
if (state == QMediaPlayer::PlayingState)
{
loadImg(":/pause");
}
else
{
loadImg(":/play");
}
}
void Icon::loadImg(const QString &path)
{
svgFile = path;
update();
}

53
gui/icon.h Normal file
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@ -0,0 +1,53 @@
#ifndef ICON_H
#define ICON_H
#include <QWidget>
#include <QLabel>
#include <QMediaPlayer>
#include <QMouseEvent>
#include <QSvgRenderer>
#include <QPixmap>
#include <QPainter>
#include <QPaintEvent>
#include <QApplication>
#include <QRect>
#include <QDesktopWidget>
class Icon : public QLabel
{
Q_OBJECT
public:
enum IconType
{
PAUSE_PLAY,
SETTINGS,
OPEN
};
Icon(IconType t, QWidget *parent = 0);
public slots:
void stateChanged(QMediaPlayer::State state);
private:
IconType type;
QMediaPlayer::State playerState;
QString svgFile;
void mouseReleaseEvent(QMouseEvent *event);
void paintEvent(QPaintEvent *);
void loadImg(const QString &path);
signals:
void pause();
void play();
void settings();
void open();
};
#endif // ICON_H

161
gui/ui.cpp
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@ -2,53 +2,160 @@
Ui::Ui(const QStringList &args, QWidget *parent) : QWidget(parent)
{
QWidget *listWid = new QWidget(this);
QScrollArea *mid = new QScrollArea(this);
QWidget *btnWid = new QWidget(this);
QHBoxLayout *btnLayout = new QHBoxLayout(btnWid);
QVBoxLayout *mainLayout = new QVBoxLayout(this);
fileName = new QLabel(this);
slider = new QSlider(this);
listLayout = new QVBoxLayout(listWid);
search = new QLineEdit(this);
pausePlay = new Icon(Icon::PAUSE_PLAY, this);
settings = new Icon(Icon::SETTINGS, this);
open = new Icon(Icon::OPEN, this);
player = new QMediaPlayer(this);
ioDev = new AudFile(this);
pressed = false;
QFont fnt = fileName->font();
QRect rect = QApplication::desktop()->screenGeometry();
fnt.setBold(true);
setMinimumHeight(rect.height() / 6);
setMinimumWidth(rect.width() / 5);
setMaximumHeight(rect.height() / 6);
setMaximumWidth(rect.width() / 5);
setStyleSheet("background-color:white;");
fileName->setText(QApplication::applicationName());
fileName->setFont(fnt);
slider->setOrientation(Qt::Horizontal);
mid->setWidget(listWid);
mid->setWidgetResizable(true);
mainLayout->addWidget(search);
mainLayout->addWidget(mid);
mainLayout->addWidget(slider);
mainLayout->setSpacing(0);
mainLayout->setContentsMargins(0, 0, 0, 0);
slider->setMinimumWidth((rect.width() / 5) - 100);
btnLayout->addWidget(pausePlay, 0, Qt::AlignCenter);
btnLayout->addSpacing(rect.height() / 40);
btnLayout->addWidget(open, 0, Qt::AlignCenter);
btnLayout->addSpacing(rect.height() / 40);
btnLayout->addWidget(settings, 0, Qt::AlignCenter);
mainLayout->addWidget(fileName, 0, Qt::AlignCenter);
mainLayout->addWidget(slider, 0, Qt::AlignCenter);
mainLayout->addWidget(btnWid, 0, Qt::AlignCenter);
connect(pausePlay, SIGNAL(pause()), player, SLOT(pause()));
connect(pausePlay, SIGNAL(play()), player, SLOT(play()));
connect(open, SIGNAL(open()), this, SLOT(openDialog()));
connect(player, SIGNAL(error(QMediaPlayer::Error)), this, SLOT(error(QMediaPlayer::Error)));
connect(player, SIGNAL(stateChanged(QMediaPlayer::State)), pausePlay, SLOT(stateChanged(QMediaPlayer::State)));
connect(player, SIGNAL(durationChanged(qint64)), this, SLOT(durationChanged(qint64)));
connect(player, SIGNAL(positionChanged(qint64)), this, SLOT(posChanged(qint64)));
connect(slider, SIGNAL(sliderPressed()), this, SLOT(sliderPressed()));
connect(slider, SIGNAL(sliderReleased()), this, SLOT(sliderReleased()));
if (args.size() > 1)
{
QFileInfo info(args[1]);
info.makeAbsolute();
if (info.isFile())
{
setActiveDir(info.path());
setActiveFile(info.filePath());
play(args[1]);
}
else if (info.isDir())
}
void Ui::play(const QString &path)
{
setActiveDir(info.path());
QFileInfo info(path);
fileDir = info.path();
slider->setMinimum(0);
fileName->setText(info.fileName());
player->stop();
ioDev->close();
ioDev->openFile(path);
player->setMedia(0, ioDev);
player->play();
}
void Ui::openDialog()
{
QFileDialog fileDialog(this);
fileDialog.setFileMode(QFileDialog::ExistingFile);
fileDialog.setNameFilter(tr("Audio Files (*.mp3 *.ogg *.wav *.flac)"));
if (fileDialog.exec())
{
play(fileDialog.selectedFiles()[0]);
}
}
void Ui::error(QMediaPlayer::Error error)
{
QMessageBox box(this);
if (error == QMediaPlayer::NoError)
{
box.setText(tr("An unknown error has occured"));
}
else
{
setActiveDir(QDir::homePath());
box.setText(player->errorString());
}
if (error == QMediaPlayer::FormatError)
{
box.setIcon(QMessageBox::Warning);
}
else
{
setActiveDir(QDir::homePath());
}
box.setIcon(QMessageBox::Critical);
}
void Ui::setActiveDir(const QString &path)
box.exec();
}
void Ui::sliderPressed()
{
for (int i = 0; i < fileList.size(); ++i)
pressed = true;
}
void Ui::sliderReleased()
{
listLayout->removeWidget(fileList[i]);
pressed = false;
player->setPosition(slider->value());
}
void Ui::posChanged(qint64 pos)
{
if (!pressed) slider->setSliderPosition(pos);
// if (slider->sliderPosition() == slider->maximum())
// {
// QTimer::singleShot(750, this, SLOT(nextFile()));
// }
}
void Ui::durationChanged(qint64 len)
{
slider->setMaximum(len);
}
void Ui::nextFile()
{
QDir dir(fileDir);
QStringList filterList;
filterList.append("*.mp3");
filterList.append("*.ogg");
filterList.append("*.flac");
filterList.append("*.wav");
QStringList list = dir.entryList(filterList, QDir::Files | QDir::Readable, QDir::Name);
int pos = list.indexOf(fileName->text());
if (pos != -1)
{
pos++;
if (pos < list.size())
{
play(fileDir + list[pos]);
}
}
}

45
gui/ui.h
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@ -4,17 +4,23 @@
#include <QWidget>
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QScrollArea>
#include <QSlider>
#include <QLabel>
#include <QDir>
#include <QFile>
#include <QFileInfo>
#include <QLineEdit>
#include <QFileInfoList>
#include <QList>
#include <QMediaPlayer>
#include <QUrl>
#include <QFileDialog>
#include <QStringList>
#include <QMessageBox>
#include <QFont>
#include <QApplication>
#include <QRect>
#include <QDesktopWidget>
#include <QTimer>
#include "file_item.h"
#include "icon.h"
#include "../io/aud_file.h"
class Ui : public QWidget
{
@ -22,19 +28,30 @@ class Ui : public QWidget
private:
QLabel *fileName;
QSlider *slider;
QLineEdit *search;
QVBoxLayout *listLayout;
QList<FileItem*> fileList;
QMediaPlayer *player;
AudFile *ioDev;
Icon *pausePlay;
Icon *settings;
Icon *open;
QString fileDir;
bool pressed;
private slots:
void error(QMediaPlayer::Error error);
void sliderPressed();
void sliderReleased();
void posChanged(qint64 pos);
void durationChanged(qint64 len);
void openDialog();
void nextFile();
void play(const QString &path);
public:
Ui(const QStringList &args, QWidget *parent = 0);
public slots:
void setActiveFile(const QString &name);
void setActiveDir(const QString &path);
};
#endif // UI_H

8
icon_files.qrc Normal file
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@ -0,0 +1,8 @@
<RCC>
<qresource prefix="/">
<file alias="play">svg/play-button.svg</file>
<file alias="pause">svg/pause.svg</file>
<file alias="settings">svg/list.svg</file>
<file alias="open">svg/eject.svg</file>
</qresource>
</RCC>

57
io/aud_file.cpp Normal file
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@ -0,0 +1,57 @@
#include "aud_file.h"
AudFile::AudFile(QObject *parent) : QFile(parent)
{
offset = 0;
}
AudFile::~AudFile()
{
close();
}
bool AudFile::openFile(const QString &path)
{
setFileName(path);
bool ret = open(QFile::ReadOnly);
if (ret)
{
if (peek(3) == "ID3")
{
QByteArray header = read(10);
QByteArray intBytes = header.mid(6);
quint64 num = 0;
quint64 bit = 1;
offset += 10;
if (header[5] & 16) //Footer flag check
{
offset += 10;
}
for (int i = intBytes.size() - 1; i >= 0; --i)
{
int byte = intBytes[i];
for (int inBit = 1; inBit <= 64; inBit *= 2, bit *= 2)
{
if ((byte & inBit) != 0) num |= bit;
}
}
offset += num;
seek(0);
}
}
return ret;
}
bool AudFile::seek(qint64 pos)
{
return QFile::seek(pos + offset);
}

26
io/aud_file.h Normal file
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@ -0,0 +1,26 @@
#ifndef AUD_FILE_H
#define AUD_FILE_H
#include <QFile>
#include <QObject>
#include <QString>
class AudFile : public QFile
{
Q_OBJECT
private:
qint64 offset;
public:
AudFile(QObject *parent = 0);
bool openFile(const QString &path);
bool seek(qint64 pos);
~AudFile();
};
#endif // AUD_FILE_H

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