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paging for pdfpreviews

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This commit is contained in:
Albert S.
2019-08-26 09:20:21 +02:00
parent fae104d094
commit 582abc333f
3 changed files with 227 additions and 189 deletions
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391
gui/mainwindow.cpp
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@@ -17,260 +17,277 @@
#include "../shared/sqlitesearch.h"
#include "../shared/qssgeneralexception.h"
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
ui->setupUi(this);
QSettings settings;
db = QSqlDatabase::addDatabase("QSQLITE");
db.setDatabaseName(QSettings().value("dbpath").toString());
if(!db.open())
{
qDebug() << "failed to open database";
throw std::runtime_error("Failed to open database");
}
connectSignals();
ui->treeResultsList->setContextMenuPolicy(Qt::ContextMenuPolicy::CustomContextMenu);
ui->tabWidget->setCurrentIndex(0);
ui->statusBar->addWidget(ui->lblSearchResults);
ui->statusBar->addWidget(ui->pdfProcessBar);
ui->pdfProcessBar->hide();
QSettings settings;
ui->comboScale->setCurrentText(settings.value("currentScale").toString());
db = QSqlDatabase::addDatabase("QSQLITE");
db.setDatabaseName(settings.value("dbpath").toString());
if(!db.open())
{
qDebug() << "failed to open database";
throw std::runtime_error("Failed to open database");
}
connectSignals();
ui->treeResultsList->setContextMenuPolicy(Qt::ContextMenuPolicy::CustomContextMenu);
ui->tabWidget->setCurrentIndex(0);
ui->statusBar->addWidget(ui->lblSearchResults);
ui->statusBar->addWidget(ui->pdfProcessBar);
ui->pdfProcessBar->hide();
ui->comboScale->setCurrentText(settings.value("currentScale").toString());
pdfPreviewsPerPage = settings.value("pdfPreviewsPerPage", 20).toInt();
ui->spinPdfPreviewPage->setMinimum(1);
}
void MainWindow::connectSignals()
{
connect(ui->txtSearch, &QLineEdit::returnPressed, this, &MainWindow::lineEditReturnPressed);
connect(&searchWatcher, &QFutureWatcher<SearchResult>::finished, this, [&]{
try
{
auto results = searchWatcher.future().result();
handleSearchResults(results);
}
catch(QSSGeneralException &e)
{
handleSearchError(e.message);
}
connect(ui->txtSearch, &QLineEdit::returnPressed, this, &MainWindow::lineEditReturnPressed);
connect(&searchWatcher, &QFutureWatcher<SearchResult>::finished, this, [&]{
try
{
auto results = searchWatcher.future().result();
handleSearchResults(results);
}
catch(QSSGeneralException &e)
{
handleSearchError(e.message);
}
});
});
connect(&pdfWorkerWatcher, &QFutureWatcher<PdfPreview>::resultReadyAt, this, [&](int index) {
pdfPreviewReceived(pdfWorkerWatcher.resultAt(index));
});
connect(&pdfWorkerWatcher, &QFutureWatcher<PdfPreview>::progressValueChanged, ui->pdfProcessBar, &QProgressBar::setValue);
connect(ui->treeResultsList, &QTreeWidget::itemActivated, this, &MainWindow::treeSearchItemActivated);
connect(ui->treeResultsList, &QTreeWidget::customContextMenuRequested, this, &MainWindow::showSearchResultsContextMenu);
connect(ui->tabWidget, &QTabWidget::currentChanged, this, &MainWindow::tabChanged);
connect(ui->comboScale, qOverload<const QString &>(&QComboBox::currentIndexChanged), this, &MainWindow::comboScaleChanged);
connect(&pdfWorkerWatcher, &QFutureWatcher<PdfPreview>::resultReadyAt, this, [&](int index) {
pdfPreviewReceived(pdfWorkerWatcher.resultAt(index));
});
connect(&pdfWorkerWatcher, &QFutureWatcher<PdfPreview>::progressValueChanged, ui->pdfProcessBar, &QProgressBar::setValue);
connect(ui->treeResultsList, &QTreeWidget::itemActivated, this, &MainWindow::treeSearchItemActivated);
connect(ui->treeResultsList, &QTreeWidget::customContextMenuRequested, this, &MainWindow::showSearchResultsContextMenu);
connect(ui->tabWidget, &QTabWidget::currentChanged, this, &MainWindow::tabChanged);
connect(ui->comboScale, qOverload<const QString &>(&QComboBox::currentIndexChanged), this, &MainWindow::comboScaleChanged);
connect(ui->spinPdfPreviewPage, qOverload<int>(&QSpinBox::valueChanged), this, &MainWindow::spinPdfPreviewPageValueChanged);
}
void MainWindow::spinPdfPreviewPageValueChanged(int val)
{
makePdfPreview(val);
}
void MainWindow::comboScaleChanged(QString text)
{
QSettings scaleSetting;
scaleSetting.setValue("currentScale", ui->comboScale->currentText());
makePdfPreview();
QSettings scaleSetting;
scaleSetting.setValue("currentScale", ui->comboScale->currentText());
makePdfPreview(ui->spinPdfPreviewPage->value());
}
bool MainWindow::pdfTabActive()
{
return ui->tabWidget->currentIndex() == 1;
return ui->tabWidget->currentIndex() == 1;
}
void MainWindow::keyPressEvent(QKeyEvent *event)
{
bool quit = ((event->modifiers() & Qt::ControlModifier && event->key() == Qt::Key_Q) || event->key() == Qt::Key_Escape);
if(quit)
{
qApp->quit();
}
bool quit = ((event->modifiers() & Qt::ControlModifier && event->key() == Qt::Key_Q) || event->key() == Qt::Key_Escape);
if(quit)
{
qApp->quit();
}
if(event->modifiers() & Qt::ControlModifier)
{
if(event->modifiers() & Qt::ControlModifier)
{
if(event->key() == Qt::Key_L)
{
ui->txtSearch->setFocus();
ui->txtSearch->selectAll();
}
}
QWidget::keyPressEvent(event);
if(event->key() == Qt::Key_L)
{
ui->txtSearch->setFocus();
ui->txtSearch->selectAll();
}
}
QWidget::keyPressEvent(event);
}
void MainWindow::tabChanged()
{
if(pdfTabActive())
{
if(pdfDirty)
{
makePdfPreview();
}
ui->pdfProcessBar->show();
}
else
{
ui->pdfProcessBar->hide();
}
if(pdfTabActive())
{
if(pdfDirty)
{
makePdfPreview(ui->spinPdfPreviewPage->value());
}
ui->pdfProcessBar->show();
}
else
{
ui->pdfProcessBar->hide();
}
}
void MainWindow::pdfPreviewReceived(PdfPreview preview)
{
if(preview.hasPreviewImage())
{
ClickLabel *label = new ClickLabel();
label->setPixmap(QPixmap::fromImage(preview.previewImage));
label->setToolTip(preview.documentPath);
ui->scrollAreaWidgetContents->layout()->addWidget(label);
connect(label, &ClickLabel::leftClick, [=]() {
QSettings settings;
QString command = settings.value("pdfviewer").toString();
if(command != "" && command.contains("%p") && command.contains("%f"))
{
QStringList splitted = command.split(" ");
if(splitted.size() > 1)
{
QString cmd = splitted[0];
QStringList args = splitted.mid(1);
args.replaceInStrings("%f", preview.documentPath);
args.replaceInStrings("%p", QString::number(preview.page));
if(preview.hasPreviewImage())
{
ClickLabel *label = new ClickLabel();
label->setPixmap(QPixmap::fromImage(preview.previewImage));
label->setToolTip(preview.documentPath);
ui->scrollAreaWidgetContents->layout()->addWidget(label);
connect(label, &ClickLabel::leftClick, [=]() {
QSettings settings;
QString command = settings.value("pdfviewer").toString();
if(command != "" && command.contains("%p") && command.contains("%f"))
{
QStringList splitted = command.split(" ");
if(splitted.size() > 1)
{
QString cmd = splitted[0];
QStringList args = splitted.mid(1);
args.replaceInStrings("%f", preview.documentPath);
args.replaceInStrings("%p", QString::number(preview.page));
QProcess::startDetached(cmd, args);
}
}
else
{
QDesktopServices::openUrl(QUrl::fromLocalFile(preview.documentPath));
}
});
}
QProcess::startDetached(cmd, args);
}
}
else
{
QDesktopServices::openUrl(QUrl::fromLocalFile(preview.documentPath));
}
});
}
}
void MainWindow::lineEditReturnPressed()
{
QString q = ui->txtSearch->text();
if(!QSSQuery::checkParanthesis(q))
{
ui->lblSearchResults->setText("Invalid paranthesis");
return;
}
//TODO: validate q;
ui->lblSearchResults->setText("Searching...");
searchWatcher.cancel();
searchWatcher.waitForFinished();
QFuture<QVector<SearchResult>> searchFuture = QtConcurrent::run([&, q]() {
SqliteSearch searcher(db);
this->currentQuery = QSSQuery::build(q);
return searcher.search(this->currentQuery);
});
searchWatcher.setFuture(searchFuture);
QString q = ui->txtSearch->text();
if(!QSSQuery::checkParanthesis(q))
{
ui->lblSearchResults->setText("Invalid paranthesis");
return;
}
//TODO: validate q;
ui->lblSearchResults->setText("Searching...");
searchWatcher.cancel();
searchWatcher.waitForFinished();
QFuture<QVector<SearchResult>> searchFuture = QtConcurrent::run([&, q]() {
SqliteSearch searcher(db);
this->currentQuery = QSSQuery::build(q);
return searcher.search(this->currentQuery);
});
searchWatcher.setFuture(searchFuture);
}
void MainWindow::handleSearchResults(const QVector<SearchResult> &results)
{
this->pdfSearchResults.clear();
ui->treeResultsList->clear();
ui->lblSearchResults->setText("Results: " + QString::number(results.size()));
for(const SearchResult &result : results)
{
QFileInfo pathInfo(result.fileData.absPath);
QString fileName =pathInfo.fileName();
QTreeWidgetItem *item = new QTreeWidgetItem(ui->treeResultsList);
this->pdfSearchResults.clear();
ui->treeResultsList->clear();
ui->lblSearchResults->setText("Results: " + QString::number(results.size()));
for(const SearchResult &result : results)
{
QFileInfo pathInfo(result.fileData.absPath);
QString fileName =pathInfo.fileName();
QTreeWidgetItem *item = new QTreeWidgetItem(ui->treeResultsList);
QDateTime dt = QDateTime::fromSecsSinceEpoch(result.fileData.mtime);
item->setIcon(0, iconProvider.icon(pathInfo));
item->setText(0, fileName);
item->setText(1, result.fileData.absPath);
item->setText(2, dt.toString(Qt::ISODate));
item->setText(3, this->locale().formattedDataSize(result.fileData.size));
if(result.fileData.absPath.endsWith(".pdf"))
{
this->pdfSearchResults.append(result);
}
}
ui->treeResultsList->resizeColumnToContents(0);
ui->treeResultsList->resizeColumnToContents(1);
pdfDirty = ! this->pdfSearchResults.empty();
if(pdfTabActive() && pdfDirty)
{
makePdfPreview();
}
QDateTime dt = QDateTime::fromSecsSinceEpoch(result.fileData.mtime);
item->setIcon(0, iconProvider.icon(pathInfo));
item->setText(0, fileName);
item->setText(1, result.fileData.absPath);
item->setText(2, dt.toString(Qt::ISODate));
item->setText(3, this->locale().formattedDataSize(result.fileData.size));
if(result.fileData.absPath.endsWith(".pdf"))
{
this->pdfSearchResults.append(result);
}
}
ui->treeResultsList->resizeColumnToContents(0);
ui->treeResultsList->resizeColumnToContents(1);
pdfDirty = ! this->pdfSearchResults.empty();
int numpages = ceil(static_cast<double>(this->pdfSearchResults.size()) / pdfPreviewsPerPage);
ui->spinPdfPreviewPage->setMinimum(1);
ui->spinPdfPreviewPage->setMaximum(numpages);
ui->spinPdfPreviewPage->setValue(1);
if(pdfTabActive() && pdfDirty)
{
makePdfPreview(1);
}
}
void MainWindow::makePdfPreview()
void MainWindow::makePdfPreview(int page)
{
this->pdfWorkerWatcher.cancel();
this->pdfWorkerWatcher.waitForFinished();
this->pdfWorkerWatcher.cancel();
this->pdfWorkerWatcher.waitForFinished();
QCoreApplication::processEvents(); //Maybe not necessary anymore, depends on whether it's possible that a slot is still to be fired.
qDeleteAll(ui->scrollAreaWidgetContents->children());
QCoreApplication::processEvents(); //Maybe not necessary anymore, depends on whether it's possible that a slot is still to be fired.
qDeleteAll(ui->scrollAreaWidgetContents->children());
ui->scrollAreaWidgetContents->setLayout(new QHBoxLayout());
ui->pdfProcessBar->setMaximum(this->pdfSearchResults.size());
processedPdfPreviews = 0;
QString scaleText = ui->comboScale->currentText();
scaleText.chop(1);
ui->scrollAreaWidgetContents->setLayout(new QHBoxLayout());
ui->pdfProcessBar->setMaximum(this->pdfSearchResults.size());
processedPdfPreviews = 0;
QString scaleText = ui->comboScale->currentText();
scaleText.chop(1);
QVector<QString> wordsToHighlight;
QRegularExpression extractor(R"#("([^"]*)"|(\w+))#");
for(const Token &token : this->currentQuery.getTokens())
{
if(token.type == FILTER_CONTENT_CONTAINS)
{
QRegularExpressionMatchIterator i = extractor.globalMatch(token.value);
while(i.hasNext())
{
QRegularExpressionMatch m = i.next();
QString value = m.captured(1);
if(value.isEmpty())
{
value = m.captured(2);
}
wordsToHighlight.append(value);
QVector<QString> wordsToHighlight;
QRegularExpression extractor(R"#("([^"]*)"|(\w+))#");
for(const Token &token : this->currentQuery.getTokens())
{
if(token.type == FILTER_CONTENT_CONTAINS)
{
QRegularExpressionMatchIterator i = extractor.globalMatch(token.value);
while(i.hasNext())
{
QRegularExpressionMatch m = i.next();
QString value = m.captured(1);
if(value.isEmpty())
{
value = m.captured(2);
}
wordsToHighlight.append(value);
}
}
}
PdfWorker worker;
this->pdfWorkerWatcher.setFuture(worker.generatePreviews(this->pdfSearchResults, wordsToHighlight, scaleText.toInt() / 100.));
ui->pdfProcessBar->setMaximum(this->pdfWorkerWatcher.progressMaximum());
ui->pdfProcessBar->setMinimum(this->pdfWorkerWatcher.progressMinimum());
}
}
}
PdfWorker worker;
int end = pdfPreviewsPerPage;
int begin = page * pdfPreviewsPerPage - pdfPreviewsPerPage;
this->pdfWorkerWatcher.setFuture(worker.generatePreviews(this->pdfSearchResults.mid(begin, end), wordsToHighlight, scaleText.toInt() / 100.));
ui->pdfProcessBar->setMaximum(this->pdfWorkerWatcher.progressMaximum());
ui->pdfProcessBar->setMinimum(this->pdfWorkerWatcher.progressMinimum());
}
void MainWindow::handleSearchError(QString error)
{
ui->lblSearchResults->setText("Error:" + error);
ui->lblSearchResults->setText("Error:" + error);
}
void MainWindow::treeSearchItemActivated(QTreeWidgetItem *item, int i)
{
QDesktopServices::openUrl(QUrl::fromLocalFile(item->text(1)));
QDesktopServices::openUrl(QUrl::fromLocalFile(item->text(1)));
}
void MainWindow::showSearchResultsContextMenu(const QPoint &point)
{
QTreeWidgetItem *item = ui->treeResultsList->itemAt(point);
if(item == nullptr)
{
return;
}
QMenu menu("SearchResult", this);
menu.addAction("Copy filename to clipboard", [&] { QGuiApplication::clipboard()->setText(item->text(0));});
menu.addAction("Copy full path to clipboard", [&] { QGuiApplication::clipboard()->setText(item->text(1)); });
menu.addAction("Open containing folder", [&] {
QFileInfo pathinfo(item->text(1));
QString dir = pathinfo.absolutePath();
QDesktopServices::openUrl(QUrl::fromLocalFile(dir));
QTreeWidgetItem *item = ui->treeResultsList->itemAt(point);
if(item == nullptr)
{
return;
}
QMenu menu("SearchResult", this);
menu.addAction("Copy filename to clipboard", [&] { QGuiApplication::clipboard()->setText(item->text(0));});
menu.addAction("Copy full path to clipboard", [&] { QGuiApplication::clipboard()->setText(item->text(1)); });
menu.addAction("Open containing folder", [&] {
QFileInfo pathinfo(item->text(1));
QString dir = pathinfo.absolutePath();
QDesktopServices::openUrl(QUrl::fromLocalFile(dir));
});
menu.exec(QCursor::pos());
});
menu.exec(QCursor::pos());
}
MainWindow::~MainWindow()
{
delete ui;
delete ui;
}

5
gui/mainwindow.h
View File

@@ -34,13 +34,14 @@ private:
void add(QString path, unsigned int page);
QVector<SearchResult> pdfSearchResults;
void connectSignals();
void makePdfPreview();
void makePdfPreview(int page);
bool pdfTabActive();
void keyPressEvent(QKeyEvent *event) override;
unsigned int processedPdfPreviews;
void handleSearchResults(const QVector<SearchResult> &results);
void handleSearchError(QString error);
QSSQuery currentQuery;
int pdfPreviewsPerPage;
private slots:
void lineEditReturnPressed();
void treeSearchItemActivated(QTreeWidgetItem *item, int i);
@@ -48,7 +49,7 @@ private slots:
void tabChanged();
void pdfPreviewReceived(PdfPreview preview);
void comboScaleChanged(QString text);
void spinPdfPreviewPageValueChanged(int val);
};
#endif // MAINWINDOW_H

20
gui/mainwindow.ui
View File

@@ -148,6 +148,26 @@
</property>
</spacer>
</item>
<item>
<widget class="QLabel" name="lblPdfPreviewPage">
<property name="text">
<string>Page:</string>
</property>
</widget>
</item>
<item>
<widget class="QSpinBox" name="spinPdfPreviewPage">
<property name="buttonSymbols">
<enum>QAbstractSpinBox::PlusMinus</enum>
</property>
<property name="accelerated">
<bool>false</bool>
</property>
<property name="showGroupSeparator" stdset="0">
<bool>false</bool>
</property>
</widget>
</item>
</layout>
</item>
</layout>