Text highlight tools basics

PdfForQtLib/sources/pdfadvancedtools.cpp

@@ -19,6 +19,7 @@
 #include "pdfdocumentbuilder.h"
 #include "pdfdrawwidget.h"
 #include "pdfutils.h"
+#include "pdfcompiler.h"
 
 #include <QActionGroup>
 #include <QInputDialog>
@@ -856,4 +857,142 @@ void PDFCreateStampTool::onPointPicked(PDFInteger pageIndex, QPointF pagePoint)
     setActive(false);
 }
 
+PDFCreateHighlightTextTool::PDFCreateHighlightTextTool(PDFDrawWidgetProxy* proxy, PDFToolManager* toolManager, AnnotationType type, QAction* action, QObject* parent) :
+    BaseClass(proxy, action, parent),
+    m_toolManager(toolManager),
+    m_type(type),
+    m_isCursorOverText(false)
+{
+    updateActions();
+}
+
+void PDFCreateHighlightTextTool::drawPage(QPainter* painter,
+                                          PDFInteger pageIndex,
+                                          const PDFPrecompiledPage* compiledPage,
+                                          PDFTextLayoutGetter& layoutGetter,
+                                          const QMatrix& pagePointToDevicePointMatrix,
+                                          QList<PDFRenderError>& errors) const
+{
+    Q_UNUSED(compiledPage);
+    Q_UNUSED(errors);
+
+    pdf::PDFTextSelectionPainter textSelectionPainter(&m_textSelection);
+    textSelectionPainter.draw(painter, pageIndex, layoutGetter, pagePointToDevicePointMatrix);
+}
+
+void PDFCreateHighlightTextTool::mousePressEvent(QWidget* widget, QMouseEvent* event)
+{
+    Q_UNUSED(widget);
+
+    if (event->button() == Qt::LeftButton)
+    {
+        QPointF pagePoint;
+        const PDFInteger pageIndex = getProxy()->getPageUnderPoint(event->pos(), &pagePoint);
+        if (pageIndex != -1)
+        {
+            m_selectionInfo.pageIndex = pageIndex;
+            m_selectionInfo.selectionStartPoint = pagePoint;
+            event->accept();
+        }
+        else
+        {
+            m_selectionInfo = SelectionInfo();
+        }
+
+        setSelection(pdf::PDFTextSelection());
+        updateCursor();
+    }
+}
+
+void PDFCreateHighlightTextTool::mouseReleaseEvent(QWidget* widget, QMouseEvent* event)
+{
+    Q_UNUSED(widget);
+
+    if (event->button() == Qt::LeftButton)
+    {
+        if (m_selectionInfo.pageIndex != -1)
+        {
+            QPointF pagePoint;
+            const PDFInteger pageIndex = getProxy()->getPageUnderPoint(event->pos(), &pagePoint);
+
+            if (m_selectionInfo.pageIndex == pageIndex)
+            {
+                // Jakub Melka: handle the selection
+                PDFTextLayout textLayout = getProxy()->getTextLayoutCompiler()->getTextLayoutLazy(pageIndex);
+                setSelection(textLayout.createTextSelection(pageIndex, m_selectionInfo.selectionStartPoint, pagePoint));
+            }
+            else
+            {
+                setSelection(pdf::PDFTextSelection());
+            }
+
+            m_selectionInfo = SelectionInfo();
+            event->accept();
+            updateCursor();
+        }
+    }
+}
+
+void PDFCreateHighlightTextTool::mouseMoveEvent(QWidget* widget, QMouseEvent* event)
+{
+    Q_UNUSED(widget);
+
+    QPointF pagePoint;
+    const PDFInteger pageIndex = getProxy()->getPageUnderPoint(event->pos(), &pagePoint);
+    PDFTextLayout textLayout = getProxy()->getTextLayoutCompiler()->getTextLayoutLazy(pageIndex);
+    m_isCursorOverText = textLayout.isHoveringOverTextBlock(pagePoint);
+
+    if (m_selectionInfo.pageIndex != -1)
+    {
+        if (m_selectionInfo.pageIndex == pageIndex)
+        {
+            // Jakub Melka: handle the selection
+            setSelection(textLayout.createTextSelection(pageIndex, m_selectionInfo.selectionStartPoint, pagePoint));
+        }
+        else
+        {
+            setSelection(pdf::PDFTextSelection());
+        }
+
+        event->accept();
+    }
+
+    updateCursor();
+}
+
+void PDFCreateHighlightTextTool::setActiveImpl(bool active)
+{
+    BaseClass::setActiveImpl(active);
+
+    if (!active)
+    {
+        // Just clear the text selection
+        setSelection(PDFTextSelection());
+    }
+}
+
+void PDFCreateHighlightTextTool::updateCursor()
+{
+    if (isActive())
+    {
+        if (m_isCursorOverText)
+        {
+            setCursor(QCursor(Qt::IBeamCursor));
+        }
+        else
+        {
+            setCursor(QCursor(Qt::ArrowCursor));
+        }
+    }
+}
+
+void PDFCreateHighlightTextTool::setSelection(PDFTextSelection&& textSelection)
+{
+    if (m_textSelection != textSelection)
+    {
+        m_textSelection = qMove(textSelection);
+        getProxy()->repaintNeeded();
+    }
+}
+
 } // namespace pdf

PdfForQtLib/sources/pdfadvancedtools.h

@@ -261,6 +261,54 @@ private:
     PDFStampAnnotation m_stampAnnotation;
 };
 
+/// Tool for highlighting of text in document
+class PDFFORQTLIBSHARED_EXPORT PDFCreateHighlightTextTool : public PDFCreateAnnotationTool
+{
+    Q_OBJECT
+
+private:
+    using BaseClass = PDFCreateAnnotationTool;
+
+public:
+
+    /// Creates new highlight text tool
+    /// \param proxy Proxy
+    /// \param type Annotation type, must be one of: Highlight, Underline, Squiggly, StrikeOut
+    /// \param action Action
+    /// \param parent Parent
+    explicit PDFCreateHighlightTextTool(PDFDrawWidgetProxy* proxy, PDFToolManager* toolManager, AnnotationType type, QAction* action, QObject* parent);
+
+    virtual void drawPage(QPainter* painter,
+                          PDFInteger pageIndex,
+                          const PDFPrecompiledPage* compiledPage,
+                          PDFTextLayoutGetter& layoutGetter,
+                          const QMatrix& pagePointToDevicePointMatrix,
+                          QList<PDFRenderError>& errors) const override;
+
+    virtual void mousePressEvent(QWidget* widget, QMouseEvent* event) override;
+    virtual void mouseReleaseEvent(QWidget* widget, QMouseEvent* event) override;
+    virtual void mouseMoveEvent(QWidget* widget, QMouseEvent* event) override;
+
+protected:
+    virtual void setActiveImpl(bool active) override;
+
+private:
+    void updateCursor();
+    void setSelection(pdf::PDFTextSelection&& textSelection);
+
+    struct SelectionInfo
+    {
+        PDFInteger pageIndex = -1;
+        QPointF selectionStartPoint;
+    };
+
+    PDFToolManager* m_toolManager;
+    AnnotationType m_type;
+    pdf::PDFTextSelection m_textSelection;
+    SelectionInfo m_selectionInfo;
+    bool m_isCursorOverText;
+};
+
 } // namespace pdf
 
 #endif // PDFADVANCEDTOOLS_H

PdfForQtLib/sources/pdfcompiler.cpp

@@ -236,7 +236,8 @@ void PDFTextLayoutGenerator::performOutputCharacter(const PDFTextCharacterInfo&
 PDFAsynchronousTextLayoutCompiler::PDFAsynchronousTextLayoutCompiler(PDFDrawWidgetProxy* proxy) :
     BaseClass(proxy),
     m_proxy(proxy),
-    m_isRunning(false)
+    m_isRunning(false),
+    m_cache(std::bind(&PDFAsynchronousTextLayoutCompiler::createTextLayout, this, std::placeholders::_1))
 {
     connect(&m_textLayoutCompileFutureWatcher, &QFutureWatcher<PDFTextLayoutStorage>::finished, this, &PDFAsynchronousTextLayoutCompiler::onTextLayoutCreated);
 }
@@ -279,6 +280,7 @@ void PDFAsynchronousTextLayoutCompiler::stop(bool clearCache)
             if (clearCache)
             {
                 m_textLayouts = std::nullopt;
+                m_cache.clear();
             }
 
             m_state = State::Inactive;
@@ -300,6 +302,50 @@ void PDFAsynchronousTextLayoutCompiler::reset()
     start();
 }
 
+PDFTextLayout PDFAsynchronousTextLayoutCompiler::createTextLayout(PDFInteger pageIndex)
+{
+    PDFTextLayout result;
+
+    if (isTextLayoutReady())
+    {
+        result = getTextLayout(pageIndex);
+    }
+    else
+    {
+        if (m_state != State::Active || !m_proxy->getDocument())
+        {
+            // Engine is not active, do not calculate layout
+            return result;
+        }
+
+        const PDFCatalog* catalog = m_proxy->getDocument()->getCatalog();
+        if (pageIndex < 0 || pageIndex >= PDFInteger(catalog->getPageCount()))
+        {
+            return result;
+        }
+
+        if (!catalog->getPage(pageIndex))
+        {
+            // Invalid page index
+            return result;
+        }
+
+        const PDFPage* page = catalog->getPage(pageIndex);
+        Q_ASSERT(page);
+
+        bool guard = false;
+        m_proxy->getFontCache()->setCacheShrinkEnabled(&guard, false);
+
+        PDFCMSPointer cms = m_proxy->getCMSManager()->getCurrentCMS();
+        PDFTextLayoutGenerator generator(m_proxy->getFeatures(), page, m_proxy->getDocument(), m_proxy->getFontCache(), cms.data(), m_proxy->getOptionalContentActivity(), QMatrix(), m_proxy->getMeshQualitySettings());
+        generator.processContents();
+        result = generator.createTextLayout();
+        m_proxy->getFontCache()->setCacheShrinkEnabled(&guard, true);
+    }
+
+    return result;
+}
+
 PDFTextLayout PDFAsynchronousTextLayoutCompiler::getTextLayout(PDFInteger pageIndex)
 {
     if (m_state != State::Active || !m_proxy->getDocument())
@@ -318,18 +364,7 @@ PDFTextLayout PDFAsynchronousTextLayoutCompiler::getTextLayout(PDFInteger pageIn
 
 PDFTextLayoutGetter PDFAsynchronousTextLayoutCompiler::getTextLayoutLazy(PDFInteger pageIndex)
 {
-    if (m_state != State::Active || !m_proxy->getDocument())
+    return PDFTextLayoutGetter(&m_cache, pageIndex);
-    {
-        // Engine is not active, always return empty layout
-        return PDFTextLayoutGetter(nullptr, pageIndex);
-    }
-
-    if (m_textLayouts)
-    {
-        return m_textLayouts->getTextLayoutLazy(pageIndex);
-    }
-
-    return PDFTextLayoutGetter(nullptr, pageIndex);
 }
 
 PDFTextSelection PDFAsynchronousTextLayoutCompiler::getTextSelectionAll(QColor color) const
@@ -454,6 +489,7 @@ void PDFAsynchronousTextLayoutCompiler::onTextLayoutCreated()
 {
     m_proxy->getFontCache()->setCacheShrinkEnabled(this, true);
     m_proxy->getProgress()->finish();
+    m_cache.clear();
 
     m_textLayouts = m_textLayoutCompileFuture.result();
     m_isRunning = false;

PdfForQtLib/sources/pdfcompiler.h

@@ -129,6 +129,12 @@ public:
         Stopping
     };
 
+    /// Creates text layout of the page synchronously. If page index is invalid,
+    /// then empty text layout is returned. Compiler must be active to get
+    /// valid text layout.
+    /// \param pageIndex Page index
+    PDFTextLayout createTextLayout(PDFInteger pageIndex);
+
     /// Returns text layout of the page. If page index is invalid,
     /// then empty text layout is returned.
     /// \param pageIndex Page index
@@ -166,6 +172,7 @@ private:
     std::optional<PDFTextLayoutStorage> m_textLayouts;
     QFuture<PDFTextLayoutStorage> m_textLayoutCompileFuture;
     QFutureWatcher<PDFTextLayoutStorage> m_textLayoutCompileFutureWatcher;
+    PDFTextLayoutCache m_cache;
 };
 
 class PDFTextLayoutGenerator : public PDFPageContentProcessor

PdfForQtLib/sources/pdftextlayout.cpp

@@ -1306,7 +1306,7 @@ bool PDFFindResult::operator<(const PDFFindResult& other) const
     return textSelectionItems.front() < other.textSelectionItems.front();
 }
 
-PDFTextLayout PDFTextLayoutGetter::getTextLayoutImpl() const
+PDFTextLayout PDFTextLayoutStorageGetter::getTextLayoutImpl() const
 {
     return m_storage ? m_storage->getTextLayout(m_pageIndex) : PDFTextLayout();
 }
@@ -1423,4 +1423,29 @@ void PDFTextSelectionPainter::draw(QPainter* painter, PDFInteger pageIndex, PDFT
     painter->restore();
 }
 
+PDFTextLayoutCache::PDFTextLayoutCache(std::function<PDFTextLayout (PDFInteger)> textLayoutGetter) :
+    m_textLayoutGetter(qMove(textLayoutGetter)),
+    m_pageIndex(-1),
+    m_layout()
+{
+
+}
+
+void PDFTextLayoutCache::clear()
+{
+    m_pageIndex = -1;
+    m_layout = PDFTextLayout();
+}
+
+const PDFTextLayout& PDFTextLayoutCache::getTextLayout(PDFInteger pageIndex)
+{
+    if (m_pageIndex != pageIndex)
+    {
+        m_pageIndex = pageIndex;
+        m_layout = m_textLayoutGetter(pageIndex);
+    }
+
+    return m_layout;
+}
+
 }   // namespace pdf

PdfForQtLib/sources/pdftextlayout.h

@@ -395,13 +395,55 @@ private:
     PDFTextBlocks m_blocks;
 };
 
+/// Cache for storing single text layout
+class PDFFORQTLIBSHARED_EXPORT PDFTextLayoutCache
+{
+public:
+    explicit PDFTextLayoutCache(std::function<PDFTextLayout(PDFInteger)> textLayoutGetter);
+
+    /// Clears the cache
+    void clear();
+
+    /// Returns text layout. This function always succeeds. If compiler is not active,
+    /// then empty layout is returned.
+    /// \param compiler Text layout compiler
+    /// \param pageIndex Page index
+    const PDFTextLayout& getTextLayout(PDFInteger pageIndex);
+
+private:
+    std::function<PDFTextLayout(PDFInteger)> m_textLayoutGetter;
+    PDFInteger m_pageIndex;
+    PDFTextLayout m_layout;
+};
+
+class PDFFORQTLIBSHARED_EXPORT PDFTextLayoutGetter
+{
+public:
+    explicit inline PDFTextLayoutGetter(PDFTextLayoutCache* cache, PDFInteger pageIndex) :
+        m_cache(cache),
+        m_pageIndex(pageIndex)
+    {
+
+    }
+
+    /// Cast operator, casts to constant reference to PDFTextLayout
+    operator const PDFTextLayout&()
+    {
+        return m_cache->getTextLayout(m_pageIndex);
+    }
+
+private:
+    PDFTextLayoutCache* m_cache;
+    PDFInteger m_pageIndex;
+};
+
 /// Lazy getter for text layouts from storage. This is used, when we do not want to
 /// get text layout each time, because it is time expensive. If text layout is not needed,
 /// then nothing happens. Text layout is returned only, if conversion operator is used.
-class PDFTextLayoutGetter
+class PDFTextLayoutStorageGetter
 {
 public:
-    explicit PDFTextLayoutGetter(const PDFTextLayoutStorage* storage, PDFInteger pageIndex) :
+    explicit PDFTextLayoutStorageGetter(const PDFTextLayoutStorage* storage, PDFInteger pageIndex) :
         m_storage(storage),
         m_pageIndex(pageIndex)
     {
@@ -411,7 +453,7 @@ public:
     /// Cast operator, casts to constant reference to PDFTextLayout
     operator const PDFTextLayout&()
     {
-        return m_textLayout.get(this, &PDFTextLayoutGetter::getTextLayoutImpl);
+        return m_textLayout.get(this, &PDFTextLayoutStorageGetter::getTextLayoutImpl);
     }
 
 private:
@@ -471,7 +513,7 @@ public:
     /// then empty text layout is returned. Function is not thread safe, if
     /// function \p setTextLayout is called from another thread.
     /// \param pageIndex Page index
-    PDFTextLayoutGetter getTextLayoutLazy(PDFInteger pageIndex) const { return PDFTextLayoutGetter(this, pageIndex); }
+    PDFTextLayoutStorageGetter getTextLayoutLazy(PDFInteger pageIndex) const { return PDFTextLayoutStorageGetter(this, pageIndex); }
 
     /// Sets text layout to the particular index. Index must be valid and from
     /// range 0 to \p pageCount - 1. Function is not thread safe.

PdfForQtViewer/pdfforqtviewer.qrc

@@ -53,5 +53,9 @@
         <file>resources/signature.svg</file>
         <file>resources/plugins.svg</file>
         <file>resources/hyperlink.svg</file>
+        <file>resources/highlight.svg</file>
+        <file>resources/squiggly.svg</file>
+        <file>resources/strikeout.svg</file>
+        <file>resources/underline.svg</file>
     </qresource>
 </RCC>

PdfForQtViewer/pdfviewermainwindow.cpp

@@ -369,6 +369,14 @@ PDFViewerMainWindow::PDFViewerMainWindow(QWidget* parent) :
     m_toolManager->addTool(createFreehandCurveTool);
     pdf::PDFCreateStampTool* createStampTool = new pdf::PDFCreateStampTool(m_pdfWidget->getDrawWidgetProxy(), m_toolManager, m_insertStampGroup, this);
     m_toolManager->addTool(createStampTool);
+    pdf::PDFCreateHighlightTextTool* createHighlightTextTool = new pdf::PDFCreateHighlightTextTool(m_pdfWidget->getDrawWidgetProxy(), m_toolManager, pdf::AnnotationType::Highlight, ui->actionCreateTextHighlight, this);
+    m_toolManager->addTool(createHighlightTextTool);
+    pdf::PDFCreateHighlightTextTool* createUnderlineTextTool = new pdf::PDFCreateHighlightTextTool(m_pdfWidget->getDrawWidgetProxy(), m_toolManager, pdf::AnnotationType::Underline, ui->actionCreateTextUnderline, this);
+    m_toolManager->addTool(createUnderlineTextTool);
+    pdf::PDFCreateHighlightTextTool* createStrikeOutTextTool = new pdf::PDFCreateHighlightTextTool(m_pdfWidget->getDrawWidgetProxy(), m_toolManager, pdf::AnnotationType::StrikeOut, ui->actionCreateTextStrikeout, this);
+    m_toolManager->addTool(createStrikeOutTextTool);
+    pdf::PDFCreateHighlightTextTool* createSquigglyTextTool = new pdf::PDFCreateHighlightTextTool(m_pdfWidget->getDrawWidgetProxy(), m_toolManager, pdf::AnnotationType::Squiggly, ui->actionCreateTextSquiggly, this);
+    m_toolManager->addTool(createSquigglyTextTool);
 
     m_annotationManager = new pdf::PDFWidgetAnnotationManager(m_pdfWidget->getDrawWidgetProxy(), this);
     connect(m_annotationManager, &pdf::PDFWidgetAnnotationManager::actionTriggered, this, &PDFViewerMainWindow::onActionTriggered);
@@ -479,6 +487,11 @@ void PDFViewerMainWindow::loadPlugins()
                     {
                         for (QAction* action : toolbarButton->menu()->actions())
                         {
+                            if (action->isSeparator())
+                            {
+                                continue;
+                            }
+
                             if (action->isEnabled())
                             {
                                 toolbarButton->setDefaultAction(action);

PdfForQtViewer/pdfviewermainwindow.ui

@@ -151,6 +151,15 @@
       <string>Stamp</string>
      </property>
     </widget>
+    <widget class="QMenu" name="menuTextHighlight">
+     <property name="title">
+      <string>Text Higlight</string>
+     </property>
+     <addaction name="actionCreateTextHighlight"/>
+     <addaction name="actionCreateTextUnderline"/>
+     <addaction name="actionCreateTextStrikeout"/>
+     <addaction name="actionCreateTextSquiggly"/>
+    </widget>
     <addaction name="menuSticky_Note"/>
     <addaction name="actionCreateHyperlink"/>
     <addaction name="actionInlineText"/>
@@ -160,6 +169,7 @@
     <addaction name="actionCreateEllipse"/>
     <addaction name="actionCreateFreehandCurve"/>
     <addaction name="menuStamp"/>
+    <addaction name="menuTextHighlight"/>
    </widget>
    <addaction name="menuFile"/>
    <addaction name="menuEdit"/>
@@ -697,6 +707,54 @@
     <string>Freehand Curve</string>
    </property>
   </action>
+  <action name="actionCreateTextHighlight">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="icon">
+    <iconset resource="pdfforqtviewer.qrc">
+     <normaloff>:/resources/highlight.svg</normaloff>:/resources/highlight.svg</iconset>
+   </property>
+   <property name="text">
+    <string>Highlight</string>
+   </property>
+  </action>
+  <action name="actionCreateTextUnderline">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="icon">
+    <iconset resource="pdfforqtviewer.qrc">
+     <normaloff>:/resources/underline.svg</normaloff>:/resources/underline.svg</iconset>
+   </property>
+   <property name="text">
+    <string>Underline</string>
+   </property>
+  </action>
+  <action name="actionCreateTextStrikeout">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="icon">
+    <iconset resource="pdfforqtviewer.qrc">
+     <normaloff>:/resources/strikeout.svg</normaloff>:/resources/strikeout.svg</iconset>
+   </property>
+   <property name="text">
+    <string>Strikeout</string>
+   </property>
+  </action>
+  <action name="actionCreateTextSquiggly">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="icon">
+    <iconset resource="pdfforqtviewer.qrc">
+     <normaloff>:/resources/squiggly.svg</normaloff>:/resources/squiggly.svg</iconset>
+   </property>
+   <property name="text">
+    <string>Squiggly</string>
+   </property>
+  </action>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
  <resources>

PdfForQtViewer/resources/highlight.svg

@@ -0,0 +1,109 @@
+<?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="highlight.svg">
+  <defs
+     id="defs5285">
+    <inkscape:perspective
+       sodipodi:type="inkscape:persp3d"
+       inkscape:vp_x="0 : 15 : 1"
+       inkscape:vp_y="0 : 1000 : 0"
+       inkscape:vp_z="30 : 15 : 1"
+       inkscape:persp3d-origin="15 : 10 : 1"
+       id="perspective5921" />
+  </defs>
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="7.9999996"
+     inkscape:cx="51.633241"
+     inkscape:cy="75.073314"
+     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: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)">
+    <g
+       aria-label="ab"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:25.39999962px;line-height:1.25;font-family:sans-serif;-inkscape-font-specification:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.26458332"
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