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PdfForQtLib/sources/pdftextlayout.cpp

@@ -483,6 +483,33 @@ PDFTextSelection PDFTextLayout::createTextSelection(PDFInteger pageIndex, const
     return selection;
 }
 
+QString PDFTextLayout::getTextFromSelection(PDFTextSelection::iterator itBegin, PDFTextSelection::iterator itEnd, PDFInteger pageIndex) const
+{
+    QStringList text;
+
+    if (itBegin != itEnd)
+    {
+        PDFTextFlows flows = PDFTextFlow::createTextFlows(*this, PDFTextFlow::RemoveSoftHyphen, pageIndex);
+        Q_ASSERT(flows.size() < 2);
+
+        if (!flows.empty())
+        {
+            const PDFTextFlow& textFlow = flows.front();
+            for (auto it = itBegin; it != itEnd; ++it)
+            {
+                text << textFlow.getText(it->start, it->end);
+            }
+        }
+    }
+
+    return text.join("\n");
+}
+
+QString PDFTextLayout::getTextFromSelection(const PDFTextSelection& selection, PDFInteger pageIndex) const
+{
+    return getTextFromSelection(selection.begin(pageIndex), selection.end(pageIndex), pageIndex);
+}
+
 QDataStream& operator>>(QDataStream& stream, PDFTextLayout& layout)
 {
     stream >> layout.m_characters;
@@ -1083,6 +1110,17 @@ PDFTextSelection::iterator PDFTextSelection::end(PDFInteger pageIndex) const
     return std::upper_bound(m_items.cbegin(), m_items.end(), item);
 }
 
+PDFTextSelection::iterator PDFTextSelection::nextPageRange(iterator currentPageRange) const
+{
+    auto it = currentPageRange;
+    while (it != m_items.cend() && it->start.pageIndex == currentPageRange->start.pageIndex)
+    {
+        ++it;
+    }
+
+    return it;
+}
+
 PDFFindResults PDFTextFlow::find(const QString& text, Qt::CaseSensitivity caseSensitivity) const
 {
     PDFFindResults results;
@@ -1133,6 +1171,21 @@ PDFFindResults PDFTextFlow::find(const QRegularExpression& expression) const
     return results;
 }
 
+QString PDFTextFlow::getText(const PDFCharacterPointer& begin, const PDFCharacterPointer& end) const
+{
+    auto it = std::find(m_characterPointers.cbegin(), m_characterPointers.cend(), begin);
+    auto itEnd = std::find(m_characterPointers.cbegin(), m_characterPointers.cend(), end);
+
+    const std::size_t startIndex = std::distance(m_characterPointers.cbegin(), it);
+    const std::size_t endIndex = std::distance(m_characterPointers.cbegin(), itEnd);
+    if (startIndex <= endIndex)
+    {
+        return m_text.mid(int(startIndex), int(endIndex - startIndex + 1));
+    }
+
+    return QString();
+}
+
 void PDFTextFlow::merge(const PDFTextFlow& next)
 {
     m_text += next.m_text;

PdfForQtLib/sources/pdftextlayout.h

@@ -238,9 +238,15 @@ public:
     /// Returns iterator to end of page range
     iterator end(PDFInteger pageIndex) const;
 
+    /// Returns iterator to next page range
+    iterator nextPageRange(iterator currentPageRange) const;
+
     /// Returns true, if text selection is empty
     bool isEmpty() const { return m_items.empty(); }
 
+    iterator begin() const { return m_items.cbegin(); }
+    iterator end() const { return m_items.cend(); }
+
 private:
     PDFTextSelectionColoredItems m_items;
 };
@@ -288,6 +294,11 @@ public:
     /// \param expression Regular expression to be matched
     PDFFindResults find(const QRegularExpression& expression) const;
 
+    /// Returns text form character pointers
+    /// \param begin Begin character
+    /// \param end End character
+    QString getText(const PDFCharacterPointer& begin, const PDFCharacterPointer& end) const;
+
     /// Merge data from \p next flow (i.e. connect two consecutive flows)
     void merge(const PDFTextFlow& next);
 
@@ -347,6 +358,17 @@ public:
     /// \param point2 Second point
     PDFTextSelection createTextSelection(PDFInteger pageIndex, const QPointF& point1, const QPointF& point2);
 
+    /// Returns string from text selection
+    /// \param itBegin Iterator (begin range)
+    /// \param itEnd Iterator (end range)
+    /// \param pageIndex Index of the page
+    QString getTextFromSelection(PDFTextSelection::iterator itBegin, PDFTextSelection::iterator itEnd, PDFInteger pageIndex) const;
+
+    /// Returns string from text selection
+    /// \param selection Text selection
+    /// \param pageIndex Index of the page
+    QString getTextFromSelection(const PDFTextSelection& selection, PDFInteger pageIndex) const;
+
     friend QDataStream& operator<<(QDataStream& stream, const PDFTextLayout& layout);
     friend QDataStream& operator>>(QDataStream& stream, PDFTextLayout& layout);
 

PdfForQtLib/sources/pdfwidgettool.cpp

@@ -28,6 +28,8 @@
 #include <QKeyEvent>
 #include <QMouseEvent>
 #include <QWheelEvent>
+#include <QClipboard>
+#include <QApplication>
 
 namespace pdf
 {
@@ -602,7 +604,32 @@ void PDFSelectTextTool::updateCursor()
 
 void PDFSelectTextTool::onActionCopyText()
 {
+    if (isActive())
+    {
+        // Jakub Melka: we must obey document permissions
+        if (getDocument()->getStorage().getSecurityHandler()->isAllowed(PDFSecurityHandler::Permission::CopyContent))
+        {
+            QStringList result;
 
+            auto it = m_textSelection.begin();
+            auto itEnd = m_textSelection.nextPageRange(it);
+            while (it != m_textSelection.end())
+            {
+                const PDFInteger pageIndex = it->start.pageIndex;
+                PDFTextLayout textLayout = getProxy()->getTextLayoutCompiler()->getTextLayoutLazy(pageIndex);
+                result << textLayout.getTextFromSelection(it, itEnd, pageIndex);
+
+                it = itEnd;
+                itEnd = m_textSelection.nextPageRange(it);
+            }
+
+            QString text = result.join("\n\n");
+            if (!text.isEmpty())
+            {
+                QApplication::clipboard()->setText(text, QClipboard::Clipboard);
+            }
+        }
+    }
 }
 
 void PDFSelectTextTool::onActionSelectAll()

PdfForQtLib/sources/pdfwidgettool.h

@@ -102,6 +102,7 @@ protected:
     virtual void setActiveImpl(bool active);
     virtual void updateActions();
 
+    const PDFDocument* getDocument() const { return m_document; }
     PDFDrawWidgetProxy* getProxy() const { return m_proxy; }
 
     inline void setCursor(QCursor cursor) { m_cursor = qMove(cursor); }