mirror of https://github.com/JakubMelka/PDF4QT.git
Issue #107: Loading images
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parent
908fb47af1
commit
fc44dfa4bc
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@ -250,7 +250,7 @@ public:
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using PDFCMSPointer = QSharedPointer<PDFCMS>;
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using PDFCMSPointer = QSharedPointer<PDFCMS>;
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class PDFCMSGeneric : public PDFCMS
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class PDF4QTLIBSHARED_EXPORT PDFCMSGeneric : public PDFCMS
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{
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{
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public:
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public:
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explicit inline PDFCMSGeneric() = default;
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explicit inline PDFCMSGeneric() = default;
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@ -20,26 +20,35 @@
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#include "pdfwidgetutils.h"
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#include "pdfwidgetutils.h"
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#include "pdfdocumentwriter.h"
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#include "pdfdocumentwriter.h"
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#include "pdfimage.h"
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#include "pdfdbgheap.h"
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#include "pdfdbgheap.h"
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#include "pdfexception.h"
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#include <QCheckBox>
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#include <QCheckBox>
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#include <QPushButton>
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#include <QPushButton>
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#include <QElapsedTimer>
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#include <QElapsedTimer>
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#include <QtConcurrent/QtConcurrent>
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#include <QtConcurrent/QtConcurrent>
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#include <QListWidget>
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namespace pdfviewer
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namespace pdfviewer
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{
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{
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PDFCreateBitonalDocumentDialog::PDFCreateBitonalDocumentDialog(const pdf::PDFDocument* document, QWidget* parent) :
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PDFCreateBitonalDocumentDialog::PDFCreateBitonalDocumentDialog(const pdf::PDFDocument* document,
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const pdf::PDFCMS* cms,
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QWidget* parent) :
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QDialog(parent),
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QDialog(parent),
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ui(new Ui::PDFCreateBitonalDocumentDialog),
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ui(new Ui::PDFCreateBitonalDocumentDialog),
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m_document(document),
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m_document(document),
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m_cms(cms),
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m_createBitonalDocumentButton(nullptr),
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m_createBitonalDocumentButton(nullptr),
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m_conversionInProgress(false),
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m_conversionInProgress(false),
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m_processed(false)
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m_processed(false)
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{
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{
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ui->setupUi(this);
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ui->setupUi(this);
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m_classifier.classify(document);
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m_imageReferences = m_classifier.getObjectsByType(pdf::PDFObjectClassifier::Image);
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m_createBitonalDocumentButton = ui->buttonBox->addButton(tr("Process"), QDialogButtonBox::ActionRole);
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m_createBitonalDocumentButton = ui->buttonBox->addButton(tr("Process"), QDialogButtonBox::ActionRole);
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connect(m_createBitonalDocumentButton, &QPushButton::clicked, this, &PDFCreateBitonalDocumentDialog::onCreateBitonalDocumentButtonClicked);
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connect(m_createBitonalDocumentButton, &QPushButton::clicked, this, &PDFCreateBitonalDocumentDialog::onCreateBitonalDocumentButtonClicked);
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connect(ui->automaticThresholdRadioButton, &QRadioButton::clicked, this, &PDFCreateBitonalDocumentDialog::updateUi);
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connect(ui->automaticThresholdRadioButton, &QRadioButton::clicked, this, &PDFCreateBitonalDocumentDialog::updateUi);
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@ -48,6 +57,8 @@ PDFCreateBitonalDocumentDialog::PDFCreateBitonalDocumentDialog(const pdf::PDFDoc
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pdf::PDFWidgetUtils::scaleWidget(this, QSize(640, 380));
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pdf::PDFWidgetUtils::scaleWidget(this, QSize(640, 380));
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updateUi();
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updateUi();
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pdf::PDFWidgetUtils::style(this);
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pdf::PDFWidgetUtils::style(this);
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loadImages();
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}
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}
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PDFCreateBitonalDocumentDialog::~PDFCreateBitonalDocumentDialog()
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PDFCreateBitonalDocumentDialog::~PDFCreateBitonalDocumentDialog()
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@ -73,6 +84,72 @@ void PDFCreateBitonalDocumentDialog::onCreateBitonalDocumentButtonClicked()
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updateUi();
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updateUi();
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}
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}
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void PDFCreateBitonalDocumentDialog::loadImages()
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{
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QSize iconSize(QSize(256, 256));
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ui->imageListWidget->setIconSize(iconSize);
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QSize imageSize = iconSize * ui->imageListWidget->devicePixelRatioF();
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pdf::PDFCMSGeneric genericCms;
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for (pdf::PDFObjectReference reference : m_imageReferences)
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{
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std::optional<pdf::PDFImage> pdfImage;
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pdf::PDFObject imageObject = m_document->getObjectByReference(reference);
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pdf::PDFRenderErrorReporterDummy errorReporter;
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if (!imageObject.isStream())
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{
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// Image is not stream
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continue;
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}
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const pdf::PDFStream* stream = imageObject.getStream();
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try
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{
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pdf::PDFColorSpacePointer colorSpace;
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const pdf::PDFDictionary* streamDictionary = stream->getDictionary();
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if (streamDictionary->hasKey("ColorSpace"))
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{
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const pdf::PDFObject& colorSpaceObject = m_document->getObject(streamDictionary->get("ColorSpace"));
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if (colorSpaceObject.isName() || colorSpaceObject.isArray())
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{
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pdf::PDFDictionary dummyDictionary;
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colorSpace = pdf::PDFAbstractColorSpace::createColorSpace(&dummyDictionary, m_document, colorSpaceObject);
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}
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}
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pdfImage.emplace(pdf::PDFImage::createImage(m_document,
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stream,
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colorSpace,
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false,
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pdf::RenderingIntent::Perceptual,
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&errorReporter));
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}
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catch (pdf::PDFException)
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{
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continue;
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}
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QImage image = pdfImage->getImage(&genericCms, &errorReporter, nullptr);
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if (image.isNull())
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{
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continue;
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}
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QListWidgetItem* item = new QListWidgetItem(ui->imageListWidget);
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QWidget* widget = new QWidget;
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QHBoxLayout* layout = new QHBoxLayout(widget);
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QCheckBox* checkbox = new QCheckBox(widget);
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layout->addWidget(checkbox);
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image = image.scaled(imageSize.width(), imageSize.height(), Qt::KeepAspectRatio, Qt::FastTransformation);
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item->setIcon(QIcon(QPixmap::fromImage(image)));
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ui->imageListWidget->setItemWidget(item, widget);
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}
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}
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void PDFCreateBitonalDocumentDialog::updateUi()
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void PDFCreateBitonalDocumentDialog::updateUi()
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{
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{
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ui->thresholdEditBox->setEnabled(ui->manualThresholdRadioButton->isChecked());
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ui->thresholdEditBox->setEnabled(ui->manualThresholdRadioButton->isChecked());
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@ -18,7 +18,9 @@
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#ifndef PDFCREATEBITONALDOCUMENTDIALOG_H
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#ifndef PDFCREATEBITONALDOCUMENTDIALOG_H
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#define PDFCREATEBITONALDOCUMENTDIALOG_H
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#define PDFCREATEBITONALDOCUMENTDIALOG_H
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#include "pdfcms.h"
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#include "pdfdocument.h"
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#include "pdfdocument.h"
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#include "pdfobjectutils.h"
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#include <QDialog>
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#include <QDialog>
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#include <QFuture>
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#include <QFuture>
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@ -36,7 +38,7 @@ class PDFCreateBitonalDocumentDialog : public QDialog
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Q_OBJECT
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Q_OBJECT
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public:
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public:
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explicit PDFCreateBitonalDocumentDialog(const pdf::PDFDocument* document, QWidget* parent);
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explicit PDFCreateBitonalDocumentDialog(const pdf::PDFDocument* document, const pdf::PDFCMS* cms, QWidget* parent);
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virtual ~PDFCreateBitonalDocumentDialog() override;
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virtual ~PDFCreateBitonalDocumentDialog() override;
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pdf::PDFDocument takeBitonaldDocument() { return qMove(m_bitonalDocument); }
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pdf::PDFDocument takeBitonaldDocument() { return qMove(m_bitonalDocument); }
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@ -44,16 +46,21 @@ public:
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private:
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private:
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void createBitonalDocument();
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void createBitonalDocument();
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void onCreateBitonalDocumentButtonClicked();
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void onCreateBitonalDocumentButtonClicked();
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void loadImages();
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void updateUi();
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void updateUi();
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Ui::PDFCreateBitonalDocumentDialog* ui;
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Ui::PDFCreateBitonalDocumentDialog* ui;
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const pdf::PDFDocument* m_document;
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const pdf::PDFDocument* m_document;
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const pdf::PDFCMS* m_cms;
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QPushButton* m_createBitonalDocumentButton;
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QPushButton* m_createBitonalDocumentButton;
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bool m_conversionInProgress;
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bool m_conversionInProgress;
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bool m_processed;
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bool m_processed;
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QFuture<void> m_future;
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QFuture<void> m_future;
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pdf::PDFDocument m_bitonalDocument;
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pdf::PDFDocument m_bitonalDocument;
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pdf::PDFObjectClassifier m_classifier;
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std::vector<pdf::PDFObjectReference> m_imageReferences;
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std::vector<pdf::PDFObjectReference> m_imagesToBeConvertedReferences;
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};
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};
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} // namespace pdfviewer
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} // namespace pdfviewer
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@ -13,16 +13,7 @@
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<property name="windowTitle">
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<property name="windowTitle">
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<string>Create Bitonal Document</string>
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<string>Create Bitonal Document</string>
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</property>
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</property>
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<layout class="QGridLayout" name="gridLayout_2" rowstretch="0,0,1,0" columnstretch="1,1,1">
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<layout class="QGridLayout" name="gridLayout_2" rowstretch="0,0,1,0" columnstretch="2,1,1">
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<item row="0" column="0" rowspan="3">
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<widget class="QTreeWidget" name="imageTreeWidget">
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<column>
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<property name="text">
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<string notr="true">1</string>
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</property>
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</column>
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</widget>
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</item>
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<item row="0" column="1" colspan="2">
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<item row="0" column="1" colspan="2">
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<widget class="QGroupBox" name="createBitonalSettingsGroupBox">
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<widget class="QGroupBox" name="createBitonalSettingsGroupBox">
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<property name="title">
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<property name="title">
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@ -151,6 +142,16 @@
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</property>
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</property>
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</widget>
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</widget>
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</item>
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</item>
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<item row="0" column="0" rowspan="3">
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<widget class="QListWidget" name="imageListWidget">
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<property name="resizeMode">
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<enum>QListView::Adjust</enum>
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</property>
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<property name="viewMode">
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<enum>QListView::IconMode</enum>
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</property>
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</widget>
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</item>
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</layout>
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</layout>
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</widget>
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</widget>
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<resources/>
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<resources/>
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@ -1256,7 +1256,8 @@ void PDFProgramController::onActionSanitizeTriggered()
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void PDFProgramController::onActionCreateBitonalDocumentTriggered()
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void PDFProgramController::onActionCreateBitonalDocumentTriggered()
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{
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{
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PDFCreateBitonalDocumentDialog dialog(m_pdfDocument.data(), m_mainWindow);
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auto cms = m_CMSManager->getCurrentCMS();
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PDFCreateBitonalDocumentDialog dialog(m_pdfDocument.data(), cms.data(), m_mainWindow);
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if (dialog.exec() == QDialog::Accepted)
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if (dialog.exec() == QDialog::Accepted)
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{
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{
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