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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 140128e405
commit fa8e351859
3 changed files with 46 additions and 8 deletions
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30
gui/mainwindow.cpp
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@ -19,9 +19,10 @@
MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow)
{
ui->setupUi(this);
QSettings settings;
db = QSqlDatabase::addDatabase("QSQLITE");
db.setDatabaseName(QSettings().value("dbpath").toString());
db.setDatabaseName(settings.value("dbpath").toString());
if(!db.open())
{
qDebug() << "failed to open database";
@ -33,8 +34,9 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWi
ui->statusBar->addWidget(ui->lblSearchResults);
ui->statusBar->addWidget(ui->pdfProcessBar);
ui->pdfProcessBar->hide();
QSettings settings;
ui->comboScale->setCurrentText(settings.value("currentScale").toString());
pdfPreviewsPerPage = settings.value("pdfPreviewsPerPage", 20).toInt();
ui->spinPdfPreviewPage->setMinimum(1);
}
void MainWindow::connectSignals()
@ -64,13 +66,20 @@ void MainWindow::connectSignals()
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();
makePdfPreview(ui->spinPdfPreviewPage->value());
}
bool MainWindow::pdfTabActive()
{
@ -104,7 +113,7 @@ void MainWindow::tabChanged()
{
if(pdfDirty)
{
makePdfPreview();
makePdfPreview(ui->spinPdfPreviewPage->value());
}
ui->pdfProcessBar->show();
}
@ -195,13 +204,18 @@ void MainWindow::handleSearchResults(const QVector<SearchResult> &results)
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();
makePdfPreview(1);
}
}
void MainWindow::makePdfPreview()
void MainWindow::makePdfPreview(int page)
{
this->pdfWorkerWatcher.cancel();
@ -237,8 +251,10 @@ void MainWindow::makePdfPreview()
}
}
PdfWorker worker;
int end = pdfPreviewsPerPage;
int begin = page * pdfPreviewsPerPage - pdfPreviewsPerPage;
this->pdfWorkerWatcher.setFuture(
worker.generatePreviews(this->pdfSearchResults, wordsToHighlight, scaleText.toInt() / 100.));
worker.generatePreviews(this->pdfSearchResults.mid(begin, end), wordsToHighlight, scaleText.toInt() / 100.));
ui->pdfProcessBar->setMaximum(this->pdfWorkerWatcher.progressMaximum());
ui->pdfProcessBar->setMinimum(this->pdfWorkerWatcher.progressMinimum());
}