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Asynchronous calculation of document text layout

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This commit is contained in:
Jakub Melka
2020-01-01 18:23:18 +01:00
parent c832c4ecef
commit e9481fc446
12 changed files with 313 additions and 81 deletions
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45
PdfForQtViewer/pdfviewermainwindow.cpp
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@ -73,7 +73,9 @@ PDFViewerMainWindow::PDFViewerMainWindow(QWidget* parent) :
m_isLoadingUI(false),
m_progress(new pdf::PDFProgress(this)),
m_taskbarButton(new QWinTaskbarButton(this)),
m_progressTaskbarIndicator(nullptr)
m_progressTaskbarIndicator(nullptr),
m_progressDialog(nullptr),
m_isBusy(false)
{
ui->setupUi(this);
@ -159,6 +161,7 @@ PDFViewerMainWindow::PDFViewerMainWindow(QWidget* parent) :
setCentralWidget(m_pdfWidget);
setFocusProxy(m_pdfWidget);
m_pdfWidget->updateCacheLimits(m_settings->getCompiledPageCacheLimit() * 1024, m_settings->getThumbnailsCacheLimit(), m_settings->getFontCacheLimit(), m_settings->getInstancedFontCacheLimit());
m_pdfWidget->getDrawWidgetProxy()->setProgress(m_progress);
m_sidebarWidget = new PDFSidebarWidget(m_pdfWidget->getDrawWidgetProxy(), this);
m_sidebarDockWidget = new QDockWidget(tr("Sidebar"), this);
@ -507,21 +510,46 @@ void PDFViewerMainWindow::onActionTriggered(const pdf::PDFAction* action)
}
}
void PDFViewerMainWindow::onProgressStarted()
void PDFViewerMainWindow::onProgressStarted(pdf::ProgressStartupInfo info)
{
Q_ASSERT(!m_progressDialog);
if (info.showDialog)
{
m_progressDialog = new QProgressDialog(info.text, QString(), 0, 100, this);
m_progressDialog->setWindowModality(Qt::WindowModal);
m_progressDialog->setCancelButton(nullptr);
}
m_progressTaskbarIndicator->setRange(0, 100);
m_progressTaskbarIndicator->reset();
m_progressTaskbarIndicator->show();
m_isBusy = true;
updateActionsAvailability();
}
void PDFViewerMainWindow::onProgressStep(int percentage)
{
if (m_progressDialog)
{
m_progressDialog->setValue(percentage);
}
m_progressTaskbarIndicator->setValue(percentage);
}
void PDFViewerMainWindow::onProgressFinished()
{
if (m_progressDialog)
{
m_progressDialog->hide();
m_progressDialog->deleteLater();
m_progressDialog = nullptr;
}
m_progressTaskbarIndicator->hide();
m_isBusy = false;
updateActionsAvailability();
}
void PDFViewerMainWindow::readSettings()
@ -697,19 +725,20 @@ void PDFViewerMainWindow::updateUI(bool fullUpdate)
void PDFViewerMainWindow::updateActionsAvailability()
{
const bool isReading = m_futureWatcher.isRunning();
const bool isBusy = m_futureWatcher.isRunning() || m_isBusy;
const bool hasDocument = m_pdfDocument;
const bool hasValidDocument = !isReading && hasDocument;
const bool hasValidDocument = !isBusy && hasDocument;
ui->actionOpen->setEnabled(!isReading);
ui->actionOpen->setEnabled(!isBusy);
ui->actionClose->setEnabled(hasValidDocument);
ui->actionQuit->setEnabled(!isReading);
ui->actionOptions->setEnabled(!isReading);
ui->actionAbout->setEnabled(!isReading);
ui->actionQuit->setEnabled(!isBusy);
ui->actionOptions->setEnabled(!isBusy);
ui->actionAbout->setEnabled(!isBusy);
ui->actionFitPage->setEnabled(hasValidDocument);
ui->actionFitWidth->setEnabled(hasValidDocument);
ui->actionFitHeight->setEnabled(hasValidDocument);
ui->actionRendering_Errors->setEnabled(hasValidDocument);
setEnabled(!isBusy);
}
void PDFViewerMainWindow::onViewerSettingsChanged()