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webengineviewer/src/print/printpreviewdialog.cpp

@@ -78,6 +78,12 @@ void PrintPreviewDialog::loadFile(const QString &path)
         KMessageBox::error(this, i18n("Unable to open file \"%1\"", path), i18n("Open file error"));
         return;
     }
+    showPage(0);
+}
 
-    //TODO
+void PrintPreviewDialog::showPage(int index)
+{
+    Poppler::Page *popplerPage = mDoc->page(index);
+    mPrintPreviewPage->showPage(popplerPage);
+    delete popplerPage;
 }

webengineviewer/src/print/printpreviewdialog.h

@@ -38,6 +38,7 @@ public:
 private:
     void writeConfig();
     void readConfig();
+    void showPage(int index);
     PrintPreviewPageViewer *mPrintPreviewPage;
     Poppler::Document *mDoc;
 };

webengineviewer/src/print/printpreviewpageviewer.cpp

@@ -16,13 +16,20 @@
 */
 
 #include "printpreviewpageviewer.h"
+#include <poppler-qt5.h>
+
 #include <QLabel>
+#include <QApplication>
+#include <QDesktopWidget>
 
 using namespace WebEngineViewer;
 
 PrintPreviewPageViewer::PrintPreviewPageViewer(QWidget *parent)
-    : QScrollArea(parent)
+    : QScrollArea(parent),
+      mDpiX(QApplication::desktop()->physicalDpiX()),
+      mDpiY(QApplication::desktop()->physicalDpiY())
 {
+
     mImage = new QLabel(this);
     mImage->setObjectName(QStringLiteral("page"));
     mImage->resize(0, 0);
@@ -33,3 +40,15 @@ PrintPreviewPageViewer::~PrintPreviewPageViewer()
 {
 
 }
+
+void PrintPreviewPageViewer::showPage(Poppler::Page *page)
+{
+    const QImage image = page->renderToImage(mDpiX, mDpiY);
+    if (!image.isNull()) {
+        mImage->resize(image.size());
+        mImage->setPixmap(QPixmap::fromImage(image));
+    } else {
+        mImage->resize(0, 0);
+        mImage->setPixmap(QPixmap());
+    }
+}

webengineviewer/src/print/printpreviewpageviewer.h

@@ -21,6 +21,10 @@
 #include <QScrollArea>
 
 class QLabel;
+namespace Poppler
+{
+class Page;
+}
 namespace WebEngineViewer
 {
 class PrintPreviewPageViewer : public QScrollArea
@@ -29,7 +33,12 @@ class PrintPreviewPageViewer : public QScrollArea
 public:
     explicit PrintPreviewPageViewer(QWidget *parent = Q_NULLPTR);
     ~PrintPreviewPageViewer();
+
+    void showPage(Poppler::Page *page);
+
 private:
+    int mDpiX;
+    int mDpiY;
     QLabel *mImage;
 };
 }