Printing feature

PdfForQtLib/PdfForQtLib.pro

@@ -224,7 +224,8 @@ qt_libraries.files =    $$[QT_INSTALL_BINS]/Qt?Widgets$${SUFFIX}.dll \
                         $$[QT_INSTALL_BINS]/Qt?Gui$${SUFFIX}.dll \
                         $$[QT_INSTALL_BINS]/Qt?Core$${SUFFIX}.dll \
                         $$[QT_INSTALL_BINS]/Qt?WinExtras$${SUFFIX}.dll \
-                        $$[QT_INSTALL_BINS]/Qt?Svg$${SUFFIX}.dll
+                        $$[QT_INSTALL_BINS]/Qt?Svg$${SUFFIX}.dll \
+                        $$[QT_INSTALL_BINS]/Qt?PrintSupport$${SUFFIX}.dll
 qt_libraries.path = $$DESTDIR/install
 INSTALLS += qt_libraries
 
@@ -235,3 +236,7 @@ INSTALLS += qt_plugin_platform
 qt_plugin_iconengine.files = $$[QT_INSTALL_PLUGINS]/iconengines/qsvgicon$${SUFFIX}.dll
 qt_plugin_iconengine.path = $$DESTDIR/install/iconengines
 INSTALLS += qt_plugin_iconengine
+
+qt_plugin_printsupport.files = $$[QT_INSTALL_PLUGINS]/printsupport/windowsprintersupport$${SUFFIX}.dll
+qt_plugin_printsupport.path = $$DESTDIR/install/printsupport
+INSTALLS += qt_plugin_printsupport

PdfForQtLib/sources/pdfrenderer.h

@@ -37,7 +37,7 @@ class PDFPrecompiledPage;
 class PDFOptionalContentActivity;
 
 /// Renders the PDF page on the painter, or onto an image.
-class PDFRenderer
+class PDFFORQTLIBSHARED_EXPORT PDFRenderer
 {
 public:
 

PdfForQtViewer/PdfForQtViewer.pro

@@ -4,7 +4,7 @@
 #
 #-------------------------------------------------
 
-QT       += core gui winextras
+QT       += core gui winextras printsupport
 
 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 

PdfForQtViewer/pdfforqtviewer.qrc

@@ -35,5 +35,6 @@
         <file>resources/ui.svg</file>
         <file>resources/rotate-left.svg</file>
         <file>resources/rotate-right.svg</file>
+        <file>resources/print.svg</file>
     </qresource>
 </RCC>

PdfForQtViewer/pdfviewermainwindow.cpp

@@ -37,6 +37,7 @@
 #include "pdfexecutionpolicy.h"
 #include "pdfwidgetutils.h"
 
+#include <QPainter>
 #include <QSettings>
 #include <QFileDialog>
 #include <QMessageBox>
@@ -53,6 +54,8 @@
 #include <QLabel>
 #include <QDoubleSpinBox>
 #include <QDesktopServices>
+#include <QtPrintSupport/QPrinter>
+#include <QtPrintSupport/QPrintDialog>
 #include <QtConcurrent/QtConcurrent>
 
 #ifdef Q_OS_WIN
@@ -109,6 +112,7 @@ PDFViewerMainWindow::PDFViewerMainWindow(QWidget* parent) :
     ui->actionCopyText->setShortcut(QKeySequence::Copy);
     ui->actionRotateRight->setShortcut(QKeySequence("Ctrl+Shift++"));
     ui->actionRotateLeft->setShortcut(QKeySequence("Ctrl+Shift+-"));
+    ui->actionPrint->setShortcut(QKeySequence::Print);
 
     for (QAction* action : m_recentFileManager->getActions())
     {
@@ -806,6 +810,14 @@ void PDFViewerMainWindow::updateActionsAvailability()
     const bool isBusy = m_futureWatcher.isRunning() || m_isBusy;
     const bool hasDocument = m_pdfDocument;
     const bool hasValidDocument = !isBusy && hasDocument;
+    bool canPrint = false;
+    if (m_pdfDocument)
+    {
+        const pdf::PDFObjectStorage& storage = m_pdfDocument->getStorage();
+        const pdf::PDFSecurityHandler* securityHandler = storage.getSecurityHandler();
+        canPrint = securityHandler->isAllowed(pdf::PDFSecurityHandler::Permission::PrintLowResolution) ||
+                   securityHandler->isAllowed(pdf::PDFSecurityHandler::Permission::PrintHighResolution);
+    }
 
     ui->actionOpen->setEnabled(!isBusy);
     ui->actionClose->setEnabled(hasValidDocument);
@@ -817,6 +829,7 @@ void PDFViewerMainWindow::updateActionsAvailability()
     ui->actionFitHeight->setEnabled(hasValidDocument);
     ui->actionRendering_Errors->setEnabled(hasValidDocument);
     ui->actionFind->setEnabled(hasValidDocument);
+    ui->actionPrint->setEnabled(hasValidDocument && canPrint);
     setEnabled(!isBusy);
 }
 
@@ -1158,4 +1171,109 @@ void PDFViewerMainWindow::on_actionRotateLeft_triggered()
     m_pdfWidget->getDrawWidgetProxy()->performOperation(pdf::PDFDrawWidgetProxy::RotateLeft);
 }
 
+void PDFViewerMainWindow::on_actionPrint_triggered()
+{
+    // Are we allowed to print in high resolution? If yes, then print in high resolution,
+    // otherwise print in low resolution. If this action is triggered, then print operation
+    // should be allowed (at least print in low resolution).
+    const pdf::PDFObjectStorage& storage = m_pdfDocument->getStorage();
+    const pdf::PDFSecurityHandler* securityHandler = storage.getSecurityHandler();
+    QPrinter::PrinterMode printerMode = QPrinter::HighResolution;
+    if (!securityHandler->isAllowed(pdf::PDFSecurityHandler::Permission::PrintHighResolution))
+    {
+        printerMode = QPrinter::ScreenResolution;
+    }
+
+    // Run print dialog
+    QPrinter printer(printerMode);
+    QPrintDialog printDialog(&printer, this);
+    printDialog.setOptions(QPrintDialog::PrintPageRange | QPrintDialog::PrintShowPageSize | QPrintDialog::PrintCollateCopies | QPrintDialog::PrintSelection);
+    printDialog.setOption(QPrintDialog::PrintCurrentPage, m_pdfWidget->getDrawWidget()->getCurrentPages().size() == 1);
+    printDialog.setMinMax(1, int(m_pdfDocument->getCatalog()->getPageCount()));
+    if (printDialog.exec() == QPrintDialog::Accepted)
+    {
+        std::vector<pdf::PDFInteger> pageIndices;
+        switch (printDialog.printRange())
+        {
+            case QAbstractPrintDialog::AllPages:
+            {
+                pageIndices.resize(m_pdfDocument->getCatalog()->getPageCount(), 0);
+                std::iota(pageIndices.begin(), pageIndices.end(), 0);
+                break;
+            }
+
+            case QAbstractPrintDialog::Selection:
+            case QAbstractPrintDialog::CurrentPage:
+            {
+                pageIndices = m_pdfWidget->getDrawWidget()->getCurrentPages();
+                break;
+            }
+
+            case QAbstractPrintDialog::PageRange:
+            {
+                const pdf::PDFInteger fromPage = printDialog.fromPage();
+                const pdf::PDFInteger toPage = printDialog.toPage();
+                const pdf::PDFInteger pageCount = toPage - fromPage + 1;
+                if (pageCount > 0)
+                {
+                    pageIndices.resize(pageCount, 0);
+                    std::iota(pageIndices.begin(), pageIndices.end(), fromPage - 1);
+                }
+                break;
+            }
+
+            default:
+                Q_ASSERT(false);
+                break;
+        }
+
+        if (pageIndices.empty())
+        {
+            // Nothing to be printed
+            return;
+        }
+
+        pdf::ProgressStartupInfo info;
+        info.showDialog = true;
+        info.text = tr("Printing document");
+        m_progress->start(pageIndices.size(), qMove(info));
+        printer.setFullPage(true);
+        QPainter painter(&printer);
+
+        const pdf::PDFCatalog* catalog = m_pdfDocument->getCatalog();
+        pdf::PDFDrawWidgetProxy* proxy = m_pdfWidget->getDrawWidgetProxy();
+        pdf::PDFOptionalContentActivity optionalContentActivity(m_pdfDocument.data(), pdf::OCUsage::Print, nullptr);
+        pdf::PDFCMSPointer cms = proxy->getCMSManager()->getCurrentCMS();
+        pdf::PDFRenderer renderer(m_pdfDocument.get(), proxy->getFontCache(), cms.data(), &optionalContentActivity, proxy->getFeatures(), proxy->getMeshQualitySettings());
+
+        const pdf::PDFInteger lastPage = pageIndices.back();
+        for (const pdf::PDFInteger pageIndex : pageIndices)
+        {
+            const pdf::PDFPage* page = catalog->getPage(pageIndex);
+            Q_ASSERT(page);
+
+            QRectF mediaBox = page->getRotatedMediaBox();
+            QRectF paperRect = printer.paperRect();
+            QSizeF scaledSize = mediaBox.size().scaled(paperRect.size(), Qt::KeepAspectRatio);
+            mediaBox.setSize(scaledSize);
+            mediaBox.moveCenter(paperRect.center());
+
+            renderer.render(&painter, mediaBox, pageIndex);
+            m_progress->step();
+
+            if (pageIndex != lastPage)
+            {
+                if (!printer.newPage())
+                {
+                    break;
+                }
+            }
+        }
+
+        painter.end();
+        m_progress->finish();
+    }
+}
+
 }   // namespace pdfviewer
+

PdfForQtViewer/pdfviewermainwindow.h

@@ -96,6 +96,8 @@ private slots:
 
     void on_actionRotateLeft_triggered();
 
+    void on_actionPrint_triggered();
+
 private:
     void onActionOpenTriggered();
     void onActionCloseTriggered();

PdfForQtViewer/pdfviewermainwindow.ui

@@ -31,6 +31,7 @@
     <addaction name="actionClose"/>
     <addaction name="separator"/>
     <addaction name="actionSend_by_E_Mail"/>
+    <addaction name="actionPrint"/>
     <addaction name="separator"/>
     <addaction name="actionProperties"/>
     <addaction name="separator"/>
@@ -440,6 +441,15 @@
     <string>Rotate Left</string>
    </property>
   </action>
+  <action name="actionPrint">
+   <property name="icon">
+    <iconset resource="pdfforqtviewer.qrc">
+     <normaloff>:/resources/print.svg</normaloff>:/resources/print.svg</iconset>
+   </property>
+   <property name="text">
+    <string>Print</string>
+   </property>
+  </action>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
  <resources>

PdfForQtViewer/resources/print.svg

@@ -0,0 +1,114 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="30mm"
+   height="30mm"
+   viewBox="0 0 30 30"
+   version="1.1"
+   id="svg5291"
+   inkscape:version="0.92.4 (5da689c313, 2019-01-14)"
+   sodipodi:docname="print.svg">
+  <defs
+     id="defs5285" />
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="15.839192"
+     inkscape:cx="43.479195"
+     inkscape:cy="22.801583"
+     inkscape:document-units="mm"
+     inkscape:current-layer="layer1"
+     showgrid="false"
+     inkscape:window-width="3840"
+     inkscape:window-height="2035"
+     inkscape:window-x="-13"
+     inkscape:window-y="-13"
+     inkscape:window-maximized="1" />
+  <metadata
+     id="metadata5288">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+        <dc:creator>
+          <cc:Agent>
+            <dc:title>Jakub Melka</dc:title>
+          </cc:Agent>
+        </dc:creator>
+        <cc:license
+           rdf:resource="http://creativecommons.org/licenses/by-sa/4.0/" />
+      </cc:Work>
+      <cc:License
+         rdf:about="http://creativecommons.org/licenses/by-sa/4.0/">
+        <cc:permits
+           rdf:resource="http://creativecommons.org/ns#Reproduction" />
+        <cc:permits
+           rdf:resource="http://creativecommons.org/ns#Distribution" />
+        <cc:requires
+           rdf:resource="http://creativecommons.org/ns#Notice" />
+        <cc:requires
+           rdf:resource="http://creativecommons.org/ns#Attribution" />
+        <cc:permits
+           rdf:resource="http://creativecommons.org/ns#DerivativeWorks" />
+        <cc:requires
+           rdf:resource="http://creativecommons.org/ns#ShareAlike" />
+      </cc:License>
+    </rdf:RDF>
+  </metadata>
+  <g
+     inkscape:label="Vrstva 1"
+     inkscape:groupmode="layer"
+     id="layer1"
+     transform="translate(0,-267)">
+    <rect
+       style="fill:#000000;fill-opacity:0.9948007;stroke:#000000;stroke-width:0.37699473;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;paint-order:stroke fill markers"
+       id="rect831"
+       width="23.085983"
+       height="7.656455"
+       x="4.1268063"
+       y="279.67856" />
+    <rect
+       style="fill:none;fill-opacity:0.9948007;stroke:#000000;stroke-width:0.7492165;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;paint-order:stroke fill markers"
+       id="rect833"
+       width="14.933595"
+       height="2.2713938"
+       x="8.1247196"
+       y="287.44482" />
+    <rect
+       style="fill:none;fill-opacity:0.9948007;stroke:#000000;stroke-width:0.72756678;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;paint-order:stroke fill markers"
+       id="rect837"
+       width="17.304916"
+       height="5.3208041"
+       x="6.9582481"
+       y="274.62485" />
+    <rect
+       style="fill:#ffffff;fill-opacity:0.9948007;stroke:none;stroke-width:1.1373328;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;paint-order:stroke fill markers"
+       id="rect841"
+       width="1.508518"
+       height="1.3341492"
+       x="4.8337612"
+       y="280.19043" />
+    <rect
+       style="fill:#ffffff;fill-opacity:0.9948007;stroke:none;stroke-width:1.1373328;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;paint-order:stroke fill markers"
+       id="rect841-0"
+       width="1.508518"
+       height="1.3341492"
+       x="6.8714461"
+       y="280.19043" />
+  </g>
+</svg>