Parsing X Reference table

PdfForQtViewer/pdfviewermainwindow.cpp

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+#include "pdfviewermainwindow.h"
+#include "ui_pdfviewermainwindow.h"
+
+#include "pdfdocumentreader.h"
+
+#include <QFileDialog>
+#include <QMessageBox>
+
+namespace pdfviewer
+{
+
+PDFViewerMainWindow::PDFViewerMainWindow(QWidget *parent) :
+    QMainWindow(parent),
+    ui(new Ui::PDFViewerMainWindow)
+{
+    ui->setupUi(this);
+
+    connect(ui->actionOpen, &QAction::triggered, this, &PDFViewerMainWindow::onActionOpenTriggered);
+}
+
+PDFViewerMainWindow::~PDFViewerMainWindow()
+{
+    delete ui;
+}
+
+void PDFViewerMainWindow::onActionOpenTriggered()
+{
+    QString fileName = QFileDialog::getOpenFileName(this, tr("Select PDF document"), "K:/Programming/PDF/testpdf", tr("PDF document (*.pdf)"));
+    if (!fileName.isEmpty())
+    {
+        pdf::PDFDocumentReader reader;
+        pdf::PDFDocument document = reader.readFromFile(fileName);
+
+        if (reader.isSuccessfull())
+        {
+            QMessageBox::information(this, tr("PDF Reader"), tr("Document '%1' was successfully loaded!").arg(fileName));
+        }
+        else
+        {
+            QMessageBox::information(this, tr("PDF Reader"), tr("Document read error: %1").arg(fileName));
+        }
+    }
+}
+
+}   // namespace pdfviewer