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Issue #82: Hot reload function

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This commit is contained in:
Jakub Melka
2023-09-01 17:33:45 +02:00
parent 7a77bd796a
commit 7eb2f2a465
13 changed files with 150 additions and 12 deletions
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89
Pdf4QtViewer/pdfprogramcontroller.cpp
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@ -335,7 +335,7 @@ PDFProgramController::PDFProgramController(QObject* parent) :
m_isFactorySettingsBeingRestored(false),
m_progress(nullptr)
{
connect(&m_fileWatcher, &QFileSystemWatcher::fileChanged, this, &PDFProgramController::onFileChanged);
}
PDFProgramController::~PDFProgramController()
@ -530,6 +530,10 @@ void PDFProgramController::initialize(Features features,
{
connect(action, &QAction::triggered, this, &PDFProgramController::onActionGetSource);
}
if (QAction* action = m_actionManager->getAction(PDFActionManager::AutomaticDocumentRefresh))
{
connect(action, &QAction::triggered, this, &PDFProgramController::onActionAutomaticDocumentRefresh);
}
if (m_recentFileManager)
{
@ -1042,7 +1046,6 @@ void PDFProgramController::onActionRenderingOptionTriggered(bool checked)
void PDFProgramController::performSaveAs()
{
QFileInfo fileInfo(m_fileInfo.originalFileName);
QString saveFileName = QFileDialog::getSaveFileName(m_mainWindow, tr("Save As"), fileInfo.dir().absoluteFilePath(m_fileInfo.originalFileName), tr("Portable Document (*.pdf);;All files (*.*)"));
if (!saveFileName.isEmpty())
@ -1058,6 +1061,8 @@ void PDFProgramController::performSave()
void PDFProgramController::saveDocument(const QString& fileName)
{
updateFileWatcher(true);
pdf::PDFDocumentWriter writer(nullptr);
pdf::PDFOperationResult result = writer.write(fileName, m_pdfDocument.data(), true);
if (result)
@ -1079,6 +1084,8 @@ void PDFProgramController::saveDocument(const QString& fileName)
{
QMessageBox::critical(m_mainWindow, tr("Error"), result.getErrorMessage());
}
updateFileWatcher();
}
bool PDFProgramController::isFactorySettingsBeingRestored() const
@ -1266,7 +1273,7 @@ void PDFProgramController::onActionEncryptionTriggered()
pdf::PDFObjectStorage storage = m_pdfDocument->getStorage();
storage.setSecurityHandler(qMove(clonedSecurityHandler));
pdf::PDFDocumentPointer pointer(new pdf::PDFDocument(qMove(storage), m_pdfDocument->getInfo()->version));
pdf::PDFDocumentPointer pointer(new pdf::PDFDocument(qMove(storage), m_pdfDocument->getInfo()->version, QByteArray()));
pdf::PDFModifiedDocument document(qMove(pointer), m_optionalContentActivity, pdf::PDFModifiedDocument::Authorization);
onDocumentModified(qMove(document));
}
@ -1585,6 +1592,53 @@ void PDFProgramController::onColorManagementSystemChanged()
m_settings->setColorManagementSystemSettings(m_CMSManager->getSettings());
}
void PDFProgramController::onFileChanged(const QString& fileName)
{
QAction* autoRefreshDocumentAction = m_actionManager->getAction(PDFActionManager::AutomaticDocumentRefresh);
if (!autoRefreshDocumentAction || // We do not have action
!autoRefreshDocumentAction->isChecked() || // Auto refresh is not enabled
m_fileInfo.originalFileName != fileName) // File is different
{
return;
}
if (m_undoRedoManager && !m_undoRedoManager->isCurrentSaved())
{
// If document is modified, we do not reload it
return;
}
QFile file(fileName);
if (file.open(QFile::ReadOnly))
{
QByteArray data = file.readAll();
file.close();
QByteArray hash = pdf::PDFDocumentReader::hash(data);
if (m_pdfDocument && m_pdfDocument->getSourceDataHash() != hash)
{
auto queryPassword = [this](bool* ok)
{
*ok = false;
return QString();
};
// Try to open a new document
pdf::PDFDocumentReader reader(m_progress, qMove(queryPassword), true, false);
pdf::PDFDocument document = reader.readFromFile(fileName);
if (reader.getReadingResult() == pdf::PDFDocumentReader::Result::OK)
{
pdf::PDFDocumentPointer pointer(new pdf::PDFDocument(std::move(document)));
pdf::PDFModifiedDocument modifiedDocument(std::move(pointer), m_optionalContentActivity, pdf::PDFModifiedDocument::ModificationFlags(pdf::PDFModifiedDocument::Reset | pdf::PDFModifiedDocument::PreserveView));
onDocumentModified(std::move(modifiedDocument));
m_undoRedoManager->setIsCurrentSaved();
}
}
}
}
void PDFProgramController::updateFileInfo(const QString& fileName)
{
QFileInfo fileInfo(fileName);
@ -1596,6 +1650,27 @@ void PDFProgramController::updateFileInfo(const QString& fileName)
m_fileInfo.creationTime = fileInfo.birthTime();
m_fileInfo.lastModifiedTime = fileInfo.lastModified();
m_fileInfo.lastReadTime = fileInfo.lastRead();
m_fileInfo.absoluteFilePath = fileInfo.absoluteFilePath();
updateFileWatcher(false);
}
void PDFProgramController::updateFileWatcher(bool forceDisable)
{
QStringList oldFiles = m_fileWatcher.files();
QStringList newFiles;
QAction* action = m_actionManager->getAction(PDFActionManager::AutomaticDocumentRefresh);
if (!forceDisable && !m_fileInfo.absoluteFilePath.isEmpty() && action && action->isChecked())
{
newFiles << m_fileInfo.absoluteFilePath;
}
if (oldFiles != newFiles)
{
m_fileWatcher.removePaths(oldFiles);
m_fileWatcher.addPaths(newFiles);
}
}
void PDFProgramController::openDocument(const QString& fileName)
@ -1809,7 +1884,7 @@ void PDFProgramController::setDocument(pdf::PDFModifiedDocument document, bool i
plugin.second->setDocument(document);
}
if (m_pdfDocument && document.hasReset())
if (m_pdfDocument && document.hasReset() && !document.hasPreserveView())
{
const pdf::PDFCatalog* catalog = m_pdfDocument->getCatalog();
setPageLayout(catalog->getPageLayout());
@ -1831,6 +1906,7 @@ void PDFProgramController::closeDocument()
m_pdfDocument.reset();
updateActionsAvailability();
updateTitle();
updateFileInfo(QString());
}
void PDFProgramController::updateRenderingOptionActions()
@ -2382,6 +2458,11 @@ void PDFProgramController::onActionGetSource()
QDesktopServices::openUrl(QUrl("https://github.com/JakubMelka/PDF4QT"));
}
void PDFProgramController::onActionAutomaticDocumentRefresh()
{
updateFileWatcher();
}
void PDFProgramController::onPageRenderingErrorsChanged(pdf::PDFInteger pageIndex, int errorsCount)
{
if (errorsCount > 0)