Adds initial intermediate qt6 porting state

qt6-after/qt6-migrated-legatus/Z/src/nglwidgets/nglpdfwidget.h

@@ -0,0 +1,49 @@
+
+
+#pragma once
+#include <QWidget>
+#include <memory>
+#include <poppler/qt6/poppler-qt6.h>
+
+#include "nglwidgets_export.h"
+
+class QUrl;
+namespace Ui
+{
+class pdfWidget;
+}
+
+namespace NGL
+{
+class NGLWIDGETS_EXPORT PDFWidget : public QWidget
+{
+  Q_OBJECT
+public:
+  explicit PDFWidget(QWidget *parent = nullptr);
+  ~PDFWidget();
+
+  bool showPDF(const QUrl &pdf);
+  bool showPDF(const QByteArray &pdf);
+  void setZoomFactor(double newZoomFactor);
+  void setRotation(Poppler::Page::Rotation rot);
+  bool setPage(int newPage);
+  QVector<QImage> getPrintableImages(int resolution = 300) const;
+  void resizePdfToWidth();
+  int numPages() const;
+  int curPage() const;
+
+Q_SIGNALS:
+  void currentPageChanged(int cur, int max);
+  void rotationChanged(Poppler::Page::Rotation newRotation);
+protected Q_SLOTS:
+  void pageChanged(int cur, int max);
+  void rotate();
+  void onZoomDefault();
+  void onZoomFull();
+  void onZoomMinus();
+  void onZoomPlus();
+protected:
+  double m_zoomFactor{1.0};
+  std::unique_ptr<Ui::pdfWidget> ui;
+};
+}