mirror of
https://github.com/crystalidea/qt6windows7.git
synced 2024-11-23 12:07:03 +08:00
398 lines
12 KiB
C++
398 lines
12 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
|
|
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
|
|
|
|
#include "mainwindow.h"
|
|
#include "dialog.h"
|
|
|
|
#include <QtWidgets>
|
|
#include <QtSql>
|
|
#include <QtXml>
|
|
|
|
extern int uniqueAlbumId;
|
|
extern int uniqueArtistId;
|
|
|
|
MainWindow::MainWindow(const QString &artistTable, const QString &albumTable,
|
|
QFile *albumDetails, QWidget *parent)
|
|
: QMainWindow(parent)
|
|
{
|
|
file = albumDetails;
|
|
readAlbumData();
|
|
|
|
model = new QSqlRelationalTableModel(this);
|
|
model->setTable(albumTable);
|
|
model->setRelation(2, QSqlRelation(artistTable, "id", "artist"));
|
|
model->select();
|
|
|
|
QGroupBox *artists = createArtistGroupBox();
|
|
QGroupBox *albums = createAlbumGroupBox();
|
|
QGroupBox *details = createDetailsGroupBox();
|
|
|
|
artistView->setCurrentIndex(0);
|
|
uniqueAlbumId = model->rowCount();
|
|
uniqueArtistId = artistView->count();
|
|
|
|
connect(model, &QSqlRelationalTableModel::rowsInserted,
|
|
this, &MainWindow::updateHeader);
|
|
connect(model, &QSqlRelationalTableModel::rowsRemoved,
|
|
this, &MainWindow::updateHeader);
|
|
|
|
QGridLayout *layout = new QGridLayout;
|
|
layout->addWidget(artists, 0, 0);
|
|
layout->addWidget(albums, 1, 0);
|
|
layout->addWidget(details, 0, 1, 2, 1);
|
|
layout->setColumnStretch(1, 1);
|
|
layout->setColumnMinimumWidth(0, 500);
|
|
|
|
QWidget *widget = new QWidget;
|
|
widget->setLayout(layout);
|
|
setCentralWidget(widget);
|
|
createMenuBar();
|
|
|
|
showImageLabel();
|
|
resize(850, 400);
|
|
setWindowTitle(tr("Music Archive"));
|
|
}
|
|
|
|
void MainWindow::changeArtist(int row)
|
|
{
|
|
if (row > 0) {
|
|
QModelIndex index = model->relationModel(2)->index(row, 1);
|
|
model->setFilter("artist = '" + index.data().toString() + '\'') ;
|
|
showArtistProfile(index);
|
|
} else if (row == 0) {
|
|
model->setFilter(QString());
|
|
showImageLabel();
|
|
} else {
|
|
return;
|
|
}
|
|
}
|
|
|
|
void MainWindow::showArtistProfile(QModelIndex index)
|
|
{
|
|
QSqlRecord record = model->relationModel(2)->record(index.row());
|
|
|
|
QString name = record.value("artist").toString();
|
|
QString count = record.value("albumcount").toString();
|
|
profileLabel->setText(tr("Artist : %1 \n" \
|
|
"Number of Albums: %2").arg(name).arg(count));
|
|
|
|
profileLabel->show();
|
|
iconLabel->show();
|
|
|
|
titleLabel->hide();
|
|
trackList->hide();
|
|
imageLabel->hide();
|
|
}
|
|
|
|
void MainWindow::showAlbumDetails(QModelIndex index)
|
|
{
|
|
QSqlRecord record = model->record(index.row());
|
|
|
|
QString artist = record.value("artist").toString();
|
|
QString title = record.value("title").toString();
|
|
QString year = record.value("year").toString();
|
|
QString albumId = record.value("albumid").toString();
|
|
|
|
showArtistProfile(indexOfArtist(artist));
|
|
titleLabel->setText(tr("Title: %1 (%2)").arg(title).arg(year));
|
|
titleLabel->show();
|
|
|
|
QDomNodeList albums = albumData.elementsByTagName("album");
|
|
for (int i = 0; i < albums.count(); ++i) {
|
|
QDomNode album = albums.item(i);
|
|
if (album.toElement().attribute("id") == albumId) {
|
|
getTrackList(album.toElement());
|
|
break;
|
|
}
|
|
}
|
|
if (trackList->count() != 0)
|
|
trackList->show();
|
|
}
|
|
|
|
void MainWindow::getTrackList(QDomNode album)
|
|
{
|
|
trackList->clear();
|
|
|
|
QDomNodeList tracks = album.childNodes();
|
|
QDomNode track;
|
|
QString trackNumber;
|
|
|
|
for (int i = 0; i < tracks.count(); ++i) {
|
|
|
|
track = tracks.item(i);
|
|
trackNumber = track.toElement().attribute("number");
|
|
|
|
QListWidgetItem *item = new QListWidgetItem(trackList);
|
|
item->setText(trackNumber + ": " + track.toElement().text());
|
|
}
|
|
}
|
|
|
|
void MainWindow::addAlbum()
|
|
{
|
|
Dialog *dialog = new Dialog(model, albumData, file, this);
|
|
int accepted = dialog->exec();
|
|
|
|
if (accepted == 1) {
|
|
int lastRow = model->rowCount() - 1;
|
|
albumView->selectRow(lastRow);
|
|
albumView->scrollToBottom();
|
|
showAlbumDetails(model->index(lastRow, 0));
|
|
}
|
|
}
|
|
|
|
void MainWindow::deleteAlbum()
|
|
{
|
|
QModelIndexList selection = albumView->selectionModel()->selectedRows(0);
|
|
|
|
if (!selection.empty()) {
|
|
QModelIndex idIndex = selection.at(0);
|
|
int id = idIndex.data().toInt();
|
|
QString title = idIndex.sibling(idIndex.row(), 1).data().toString();
|
|
QString artist = idIndex.sibling(idIndex.row(), 2).data().toString();
|
|
|
|
QMessageBox::StandardButton button;
|
|
button = QMessageBox::question(this, tr("Delete Album"),
|
|
tr("Are you sure you want to "
|
|
"delete '%1' by '%2'?")
|
|
.arg(title, artist),
|
|
QMessageBox::Yes | QMessageBox::No);
|
|
|
|
if (button == QMessageBox::Yes) {
|
|
removeAlbumFromFile(id);
|
|
removeAlbumFromDatabase(idIndex);
|
|
decreaseAlbumCount(indexOfArtist(artist));
|
|
|
|
showImageLabel();
|
|
}
|
|
} else {
|
|
QMessageBox::information(this, tr("Delete Album"),
|
|
tr("Select the album you want to delete."));
|
|
}
|
|
}
|
|
|
|
void MainWindow::removeAlbumFromFile(int id)
|
|
{
|
|
|
|
QDomNodeList albums = albumData.elementsByTagName("album");
|
|
|
|
for (int i = 0; i < albums.count(); ++i) {
|
|
QDomNode node = albums.item(i);
|
|
if (node.toElement().attribute("id").toInt() == id) {
|
|
albumData.elementsByTagName("archive").item(0).removeChild(node);
|
|
break;
|
|
}
|
|
}
|
|
/*
|
|
The following code is commented out since the example uses an in
|
|
memory database, i.e., altering the XML file will bring the data
|
|
out of sync.
|
|
|
|
if (!file->open(QIODevice::WriteOnly)) {
|
|
return;
|
|
} else {
|
|
QTextStream stream(file);
|
|
albumData.elementsByTagName("archive").item(0).save(stream, 4);
|
|
file->close();
|
|
}
|
|
*/
|
|
}
|
|
|
|
void MainWindow::removeAlbumFromDatabase(QModelIndex index)
|
|
{
|
|
model->removeRow(index.row());
|
|
}
|
|
|
|
void MainWindow::decreaseAlbumCount(QModelIndex artistIndex)
|
|
{
|
|
int row = artistIndex.row();
|
|
QModelIndex albumCountIndex = artistIndex.sibling(row, 2);
|
|
int albumCount = albumCountIndex.data().toInt();
|
|
|
|
QSqlTableModel *artists = model->relationModel(2);
|
|
|
|
if (albumCount == 1) {
|
|
artists->removeRow(row);
|
|
showImageLabel();
|
|
} else {
|
|
artists->setData(albumCountIndex, QVariant(albumCount - 1));
|
|
}
|
|
}
|
|
|
|
void MainWindow::readAlbumData()
|
|
{
|
|
if (!file->open(QIODevice::ReadOnly))
|
|
return;
|
|
|
|
if (!albumData.setContent(file)) {
|
|
file->close();
|
|
return;
|
|
}
|
|
file->close();
|
|
}
|
|
|
|
QGroupBox* MainWindow::createArtistGroupBox()
|
|
{
|
|
artistView = new QComboBox;
|
|
artistView->setModel(model->relationModel(2));
|
|
artistView->setModelColumn(1);
|
|
|
|
connect(artistView, &QComboBox::currentIndexChanged,
|
|
this, &MainWindow::changeArtist);
|
|
|
|
QGroupBox *box = new QGroupBox(tr("Artist"));
|
|
|
|
QGridLayout *layout = new QGridLayout;
|
|
layout->addWidget(artistView, 0, 0);
|
|
box->setLayout(layout);
|
|
|
|
return box;
|
|
}
|
|
|
|
QGroupBox* MainWindow::createAlbumGroupBox()
|
|
{
|
|
QGroupBox *box = new QGroupBox(tr("Album"));
|
|
|
|
albumView = new QTableView;
|
|
albumView->setEditTriggers(QAbstractItemView::NoEditTriggers);
|
|
albumView->setSortingEnabled(true);
|
|
albumView->setSelectionBehavior(QAbstractItemView::SelectRows);
|
|
albumView->setSelectionMode(QAbstractItemView::SingleSelection);
|
|
albumView->setShowGrid(false);
|
|
albumView->verticalHeader()->hide();
|
|
albumView->setAlternatingRowColors(true);
|
|
albumView->setModel(model);
|
|
adjustHeader();
|
|
|
|
QLocale locale = albumView->locale();
|
|
locale.setNumberOptions(QLocale::OmitGroupSeparator);
|
|
albumView->setLocale(locale);
|
|
|
|
connect(albumView, &QTableView::clicked,
|
|
this, &MainWindow::showAlbumDetails);
|
|
connect(albumView, &QTableView::activated,
|
|
this, &MainWindow::showAlbumDetails);
|
|
|
|
QVBoxLayout *layout = new QVBoxLayout;
|
|
layout->addWidget(albumView, 0, { });
|
|
box->setLayout(layout);
|
|
|
|
return box;
|
|
}
|
|
|
|
QGroupBox* MainWindow::createDetailsGroupBox()
|
|
{
|
|
QGroupBox *box = new QGroupBox(tr("Details"));
|
|
|
|
profileLabel = new QLabel;
|
|
profileLabel->setWordWrap(true);
|
|
profileLabel->setAlignment(Qt::AlignBottom);
|
|
|
|
titleLabel = new QLabel;
|
|
titleLabel->setWordWrap(true);
|
|
titleLabel->setAlignment(Qt::AlignBottom);
|
|
|
|
iconLabel = new QLabel();
|
|
iconLabel->setAlignment(Qt::AlignBottom | Qt::AlignRight);
|
|
iconLabel->setPixmap(QPixmap(":/images/icon.png"));
|
|
|
|
imageLabel = new QLabel;
|
|
imageLabel->setWordWrap(true);
|
|
imageLabel->setAlignment(Qt::AlignCenter);
|
|
imageLabel->setPixmap(QPixmap(":/images/image.png"));
|
|
|
|
trackList = new QListWidget;
|
|
|
|
QGridLayout *layout = new QGridLayout;
|
|
layout->addWidget(imageLabel, 0, 0, 3, 2);
|
|
layout->addWidget(profileLabel, 0, 0);
|
|
layout->addWidget(iconLabel, 0, 1);
|
|
layout->addWidget(titleLabel, 1, 0, 1, 2);
|
|
layout->addWidget(trackList, 2, 0, 1, 2);
|
|
layout->setRowStretch(2, 1);
|
|
box->setLayout(layout);
|
|
|
|
return box;
|
|
}
|
|
|
|
void MainWindow::createMenuBar()
|
|
{
|
|
QAction *addAction = new QAction(tr("&Add album..."), this);
|
|
QAction *deleteAction = new QAction(tr("&Delete album..."), this);
|
|
QAction *quitAction = new QAction(tr("&Quit"), this);
|
|
QAction *aboutAction = new QAction(tr("&About"), this);
|
|
QAction *aboutQtAction = new QAction(tr("About &Qt"), this);
|
|
|
|
addAction->setShortcut(tr("Ctrl+A"));
|
|
deleteAction->setShortcut(tr("Ctrl+D"));
|
|
quitAction->setShortcuts(QKeySequence::Quit);
|
|
|
|
QMenu *fileMenu = menuBar()->addMenu(tr("&File"));
|
|
fileMenu->addAction(addAction);
|
|
fileMenu->addAction(deleteAction);
|
|
fileMenu->addSeparator();
|
|
fileMenu->addAction(quitAction);
|
|
|
|
QMenu *helpMenu = menuBar()->addMenu(tr("&Help"));
|
|
helpMenu->addAction(aboutAction);
|
|
helpMenu->addAction(aboutQtAction);
|
|
|
|
connect(addAction, &QAction::triggered,
|
|
this, &MainWindow::addAlbum);
|
|
connect(deleteAction, &QAction::triggered,
|
|
this, &MainWindow::deleteAlbum);
|
|
connect(quitAction, &QAction::triggered,
|
|
qApp, &QCoreApplication::quit);
|
|
connect(aboutAction, &QAction::triggered,
|
|
this, &MainWindow::about);
|
|
connect(aboutQtAction, &QAction::triggered,
|
|
qApp, &QApplication::aboutQt);
|
|
}
|
|
|
|
void MainWindow::showImageLabel()
|
|
{
|
|
profileLabel->hide();
|
|
titleLabel->hide();
|
|
iconLabel->hide();
|
|
trackList->hide();
|
|
|
|
imageLabel->show();
|
|
}
|
|
|
|
QModelIndex MainWindow::indexOfArtist(const QString &artist)
|
|
{
|
|
QSqlTableModel *artistModel = model->relationModel(2);
|
|
|
|
for (int i = 0; i < artistModel->rowCount(); i++) {
|
|
QSqlRecord record = artistModel->record(i);
|
|
if (record.value("artist") == artist)
|
|
return artistModel->index(i, 1);
|
|
}
|
|
return QModelIndex();
|
|
}
|
|
|
|
void MainWindow::updateHeader(QModelIndex, int, int)
|
|
{
|
|
adjustHeader();
|
|
}
|
|
|
|
void MainWindow::adjustHeader()
|
|
{
|
|
albumView->hideColumn(0);
|
|
albumView->horizontalHeader()->setSectionResizeMode(1, QHeaderView::Stretch);
|
|
albumView->resizeColumnToContents(2);
|
|
albumView->resizeColumnToContents(3);
|
|
}
|
|
|
|
void MainWindow::about()
|
|
{
|
|
QMessageBox::about(this, tr("About Music Archive"),
|
|
tr("<p>The <b>Music Archive</b> example shows how to present "
|
|
"data from different data sources in the same application. "
|
|
"The album titles, and the corresponding artists and release dates, "
|
|
"are kept in a database, while each album's tracks are stored "
|
|
"in an XML file. </p><p>The example also shows how to add as "
|
|
"well as remove data from both the database and the "
|
|
"associated XML file using the API provided by the Qt SQL and "
|
|
"Qt XML modules, respectively.</p>"));
|
|
}
|