Add support for poppler-qt6

Fixes #352

common/comic.cpp

@@ -808,8 +808,13 @@ void PDFComic::process()
         return;
     }
 #else
+
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    pdfComic = Poppler::Document::load(_path);
+#else
     auto _pdfComic = Poppler::Document::load(_path);
     pdfComic = std::unique_ptr<Poppler::Document>(_pdfComic);
+#endif
 
     if (!pdfComic) {
         moveToThread(QCoreApplication::instance()->thread());
@@ -877,7 +882,7 @@ void PDFComic::renderPage(int page)
     QImage img = pdfComic->getPage(page);
     if (!img.isNull()) {
 #else
-    std::unique_ptr<Poppler::Page> pdfpage (pdfComic->page(page));
+    std::unique_ptr<Poppler::Page> pdfpage(pdfComic->page(page));
     if (pdfpage) {
         QImage img = pdfpage->renderToImage(150, 150);
 #endif

common/comic.h

@@ -12,7 +12,7 @@
 #include "pdf_comic.h"
 #endif // NO_PDF
 class ComicDB;
-//#define EXTENSIONS << "*.jpg" << "*.jpeg" << "*.png" << "*.gif" << "*.tiff" << "*.tif" << "*.bmp" Comic::getSupportedImageFormats()
+
 //#define EXTENSIONS_LITERAL << ".jpg" << ".jpeg" << ".png" << ".gif" << ".tiff" << ".tif" << ".bmp" //Comic::getSupportedImageLiteralFormats()
 class Comic : public QObject
 {
@@ -172,6 +172,7 @@ private:
     std::unique_ptr<Poppler::Document> pdfComic;
 #endif
     void renderPage(int page);
+
     // void run();
 
 public:

common/pdf_comic.h

@@ -5,6 +5,7 @@
 #include <QImage>
 #include <QFile>
 #include <QMutex>
+#include <QtGlobal>
 
 #if defined Q_OS_MAC && defined USE_PDFKIT
 class MacOSXPDFComic
@@ -45,6 +46,10 @@ private:
     QFile pdfFile;
 };
 #else
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+#include <poppler-qt6.h>
+#else
 #include "poppler-qt5.h"
+#endif // QT_VERSION
 #endif // Q_OS_MAC
 #endif // PDF_COMIC_H