void RenderThread::run()
{
double factor = qBound(0.01, m_zoomFactor, 10.0);
if (!QFile::exists(m_pdfUrl)) return;
Poppler::Document* document = Poppler::Document::load(m_pdfUrl);
if (!document || document->isLocked()) {
delete document;
return;
}
// Access page of the PDF file
document->setRenderHint(Poppler::Document::Antialiasing, true);
document->setRenderHint(Poppler::Document::TextAntialiasing, true);
Poppler::Page* pdfPage = document->page(0); // Document starts at page 0
if (pdfPage == 0) {
return;
}
// Generate a QImage of the rendered page
QImage image = pdfPage->renderToImage(factor*200.0, factor*200.0);
emit previewReady(image);
delete pdfPage;
delete document;
}
void MainWindow::on_actionVista_Previa_triggered()
{
QProgressDialog* pDlg = new QProgressDialog(this);
pDlg->setMaximum(0);
pDlg->setValue(0);
pDlg->show();
QPrinter * printer = new QPrinter();
QPrintDialog dlg(printer,this);
// bool error;
QDomDocument doc = paper.preview();
render = new ReportRenderer();
render->setPrinter(printer);
render->setDocIn(doc);
QMap<QString,QString> c;
c["Empresa.cab_fac"] = "id = 1";
c["Empresa.lin_fac"] = "id_cab = 1";
render->setQueryClausules(c);
QtConcurrent::run(render, &ReportRenderer::PreRender);
connect(render,SIGNAL(end()),pDlg,SLOT(deleteLater()));
connect(render,SIGNAL(end()),this,SLOT(previewReady()));
}
void ThemePreview::doPreview()
{
if (!themedView)
return;
ThemeItem *page = themedView->findItem(m_name, ThemedView::Page);
if (page)
m_preview = QPixmap::grabWidget(themedView, page->rect());
emit previewReady(m_preview.scaledToWidth((int)(m_width * 0.55), Qt::SmoothTransformation));
}
bool PreviewGenerator::Run(void)
{
bool ok = false;
if (!IsLocal())
{
if (!localOnly)
{
ok = RemotePreviewRun();
}
else
{
VERBOSE(VB_IMPORTANT, LOC_ERR +
QString("Run() file not local: '%1'")
.arg(pathname));
}
}
else
{
// This is where we fork and run mythbackend to actually make preview
QString command = gContext->GetInstallPrefix() +
"/bin/mythbackend --generate-preview ";
command += QString("%1x%2")
.arg(outSize.width()).arg(outSize.height());
if (captureTime >= 0)
command += QString("@%1%2")
.arg(captureTime).arg(timeInSeconds ? "s" : "f");
command += " ";
command += QString("--chanid %1 ").arg(programInfo.chanid);
command += QString("--starttime %1 ")
.arg(programInfo.recstartts.toString("yyyyMMddhhmmss"));
if (!outFileName.isEmpty())
command += QString("--outfile \"%1\" ").arg(outFileName);
int ret = myth_system(command);
if (ret)
{
VERBOSE(VB_IMPORTANT, LOC_ERR + "Encountered problems running " +
QString("'%1'").arg(command));
}
else
{
VERBOSE(VB_PLAYBACK, LOC + "Preview process returned 0.");
QString outname = (!outFileName.isEmpty()) ?
outFileName : (pathname + ".png");
QString lpath = QFileInfo(outname).fileName();
if (lpath == outname)
{
StorageGroup sgroup;
QString tmpFile = sgroup.FindRecordingFile(lpath);
outname = (tmpFile.isEmpty()) ? outname : tmpFile;
}
QFileInfo fi(outname);
ok = (fi.exists() && fi.isReadable() && fi.size());
if (ok)
VERBOSE(VB_PLAYBACK, LOC + "Preview process ran ok.");
else
{
VERBOSE(VB_IMPORTANT, LOC_ERR + "Preview process not ok." +
QString("\n\t\t\tfileinfo(%1)").arg(outname)
<<" exists: "<<fi.exists()
<<" readable: "<<fi.isReadable()
<<" size: "<<fi.size());
}
}
}
if (ok)
{
QMutexLocker locker(&previewLock);
emit previewReady(&programInfo);
}
return ok;
}
