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Editor plugin: Update of text element

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This commit is contained in:
Jakub Melka
2024-06-26 12:19:01 +02:00
parent b5f102abbd
commit ec31f56981
5 changed files with 261 additions and 179 deletions
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427
Pdf4QtEditorPlugins/EditorPlugin/editorplugin.cpp
View File

@@ -188,6 +188,191 @@ QString EditorPlugin::getPluginMenuName() const
return tr("Edi&tor");
}
bool EditorPlugin::updatePageContent(pdf::PDFInteger pageIndex,
const std::vector<const pdf::PDFPageContentElement*>& elements,
pdf::PDFDocumentBuilder* builder)
{
pdf::PDFColorConvertor convertor;
const pdf::PDFPage* page = m_document->getCatalog()->getPage(pageIndex);
const pdf::PDFEditedPageContent& editedPageContent = m_editedPageContent.at(pageIndex);
QRectF mediaBox = page->getMediaBox();
QRectF mediaBoxMM = page->getMediaBoxMM();
pdf::PDFPageContentEditorContentStreamBuilder contentStreamBuilder(m_document);
contentStreamBuilder.setFontDictionary(editedPageContent.getFontDictionary());
for (const pdf::PDFPageContentElement* element : elements)
{
const pdf::PDFPageContentElementEdited* editedElement = element->asElementEdited();
const pdf::PDFPageContentElementRectangle* elementRectangle = element->asElementRectangle();
const pdf::PDFPageContentElementLine* elementLine = element->asElementLine();
const pdf::PDFPageContentElementDot* elementDot = element->asElementDot();
const pdf::PDFPageContentElementFreehandCurve* elementFreehandCurve = element->asElementFreehandCurve();
const pdf::PDFPageContentImageElement* elementImage = element->asElementImage();
const pdf::PDFPageContentElementTextBox* elementTextBox = element->asElementTextBox();
if (editedElement)
{
contentStreamBuilder.writeEditedElement(editedElement->getElement());
}
if (elementRectangle)
{
QRectF rect = elementRectangle->getRectangle();
QPainterPath path;
if (elementRectangle->isRounded())
{
qreal radius = qMin(rect.width(), rect.height()) * 0.25;
path.addRoundedRect(rect, radius, radius, Qt::AbsoluteSize);
}
else
{
path.addRect(rect);
}
const bool stroke = elementRectangle->getPen().style() != Qt::NoPen;
const bool fill = elementRectangle->getBrush().style() != Qt::NoBrush;
contentStreamBuilder.writeStyledPath(path, elementRectangle->getPen(), elementRectangle->getBrush(), stroke, fill);
}
if (elementLine)
{
QLineF line = elementLine->getLine();
QPainterPath path;
path.moveTo(line.p1());
path.lineTo(line.p2());
contentStreamBuilder.writeStyledPath(path, elementLine->getPen(), elementLine->getBrush(), true, false);
}
if (elementDot)
{
QPen pen = elementDot->getPen();
const qreal radius = pen.widthF() * 0.5;
QPainterPath path;
path.addEllipse(elementDot->getPoint(), radius, radius);
contentStreamBuilder.writeStyledPath(path, Qt::NoPen, QBrush(pen.color()), false, true);
}
if (elementFreehandCurve)
{
QPainterPath path = elementFreehandCurve->getCurve();
contentStreamBuilder.writeStyledPath(path, elementFreehandCurve->getPen(), elementFreehandCurve->getBrush(), true, false);
}
if (elementImage)
{
QImage image = elementImage->getImage();
if (!image.isNull())
{
contentStreamBuilder.writeImage(image, elementImage->getRectangle());
}
else
{
// It is probably an SVG image
pdf::PDFContentEditorPaintDevice paintDevice(&contentStreamBuilder, mediaBox, mediaBoxMM);
QPainter painter(&paintDevice);
QList<pdf::PDFRenderError> errors;
pdf::PDFTextLayoutGetter textLayoutGetter(nullptr, pageIndex);
elementImage->drawPage(&painter, &m_scene, pageIndex, nullptr, textLayoutGetter, QTransform(), convertor, errors);
}
}
if (elementTextBox)
{
pdf::PDFContentEditorPaintDevice paintDevice(&contentStreamBuilder, mediaBox, mediaBoxMM);
QPainter painter(&paintDevice);
QList<pdf::PDFRenderError> errors;
pdf::PDFTextLayoutGetter textLayoutGetter(nullptr, pageIndex);
elementTextBox->drawPage(&painter, &m_scene, pageIndex, nullptr, textLayoutGetter, QTransform(), convertor, errors);
}
}
QStringList errors = contentStreamBuilder.getErrors();
contentStreamBuilder.clearErrors();
if (!errors.empty())
{
const int errorCount = errors.size();
if (errors.size() > 3)
{
errors.resize(3);
}
QString message = tr("Errors (%2) occured while creating content stream on page %3.<br>%1").arg(errors.join("<br>")).arg(errorCount).arg(pageIndex + 1);
if (QMessageBox::question(m_dataExchangeInterface->getMainWindow(), tr("Error"), message, QMessageBox::Abort, QMessageBox::Ignore) == QMessageBox::Abort)
{
return false;
}
}
pdf::PDFDictionary fontDictionary = contentStreamBuilder.getFontDictionary();
pdf::PDFDictionary xobjectDictionary = contentStreamBuilder.getXObjectDictionary();
pdf::PDFDictionary graphicStateDictionary = contentStreamBuilder.getGraphicStateDictionary();
builder->replaceObjectsByReferences(fontDictionary);
builder->replaceObjectsByReferences(xobjectDictionary);
builder->replaceObjectsByReferences(graphicStateDictionary);
pdf::PDFArray array;
array.appendItem(pdf::PDFObject::createName("FlateDecode"));
// Compress the content stream
QByteArray compressedData = pdf::PDFFlateDecodeFilter::compress(contentStreamBuilder.getOutputContent());
pdf::PDFDictionary contentDictionary;
contentDictionary.setEntry(pdf::PDFInplaceOrMemoryString("Length"), pdf::PDFObject::createInteger(compressedData.size()));
contentDictionary.setEntry(pdf::PDFInplaceOrMemoryString("Filter"), pdf::PDFObject::createArray(std::make_shared<pdf::PDFArray>(qMove(array))));
pdf::PDFObject contentObject = pdf::PDFObject::createStream(std::make_shared<pdf::PDFStream>(qMove(contentDictionary), qMove(compressedData)));
pdf::PDFObject pageObject = builder->getObjectByReference(page->getPageReference());
pdf::PDFObjectFactory factory;
factory.beginDictionary();
factory.beginDictionaryItem("Resources");
factory.beginDictionary();
if (!fontDictionary.isEmpty())
{
factory.beginDictionaryItem("Font");
factory << fontDictionary;
factory.endDictionaryItem();
}
if (!xobjectDictionary.isEmpty())
{
factory.beginDictionaryItem("XObject");
factory << xobjectDictionary;
factory.endDictionaryItem();
}
if (!graphicStateDictionary.isEmpty())
{
factory.beginDictionaryItem("ExtGState");
factory << graphicStateDictionary;
factory.endDictionaryItem();
}
factory.endDictionary();
factory.endDictionaryItem();
factory.beginDictionaryItem("Contents");
factory << builder->addObject(std::move(contentObject));
factory.endDictionaryItem();
factory.endDictionary();
pageObject = pdf::PDFObjectManipulator::merge(pageObject, factory.takeObject(), pdf::PDFObjectManipulator::RemoveNullObjects);
builder->setObject(page->getPageReference(), std::move(pageObject));
return true;
}
bool EditorPlugin::save()
{
pdf::PDFTemporaryValueChange guard(&m_isSaving, true);
@@ -202,8 +387,7 @@ bool EditorPlugin::save()
if (answer == QMessageBox::Yes)
{
pdf::PDFDocumentModifier modifier(m_document);
pdf::PDFColorConvertor convertor;
pdf::PDFDocumentBuilder* builder = modifier.getBuilder();
std::set<pdf::PDFInteger> pageIndices;
for (const auto& item : m_editedPageContent)
@@ -211,7 +395,7 @@ bool EditorPlugin::save()
pageIndices.insert(item.first);
}
auto elementsByPage = m_scene.getElementsByPage();
std::map<pdf::PDFInteger, std::vector<const pdf::PDFPageContentElement*>> elementsByPage = m_scene.getElementsByPage();
for (pdf::PDFInteger pageIndex : pageIndices)
{
if (m_editedPageContent.count(pageIndex) == 0)
@@ -219,189 +403,18 @@ bool EditorPlugin::save()
continue;
}
const pdf::PDFPage* page = m_document->getCatalog()->getPage(pageIndex);
const pdf::PDFEditedPageContent& editedPageContent = m_editedPageContent.at(pageIndex);
QRectF mediaBox = page->getMediaBox();
QRectF mediaBoxMM = page->getMediaBoxMM();
pdf::PDFPageContentEditorContentStreamBuilder contentStreamBuilder(m_document);
contentStreamBuilder.setFontDictionary(editedPageContent.getFontDictionary());
std::vector<const pdf::PDFPageContentElement*> elements;
auto it = elementsByPage.find(pageIndex);
if (it != elementsByPage.cend())
{
for (const pdf::PDFPageContentElement* element : it->second)
{
const pdf::PDFPageContentElementEdited* editedElement = element->asElementEdited();
const pdf::PDFPageContentElementRectangle* elementRectangle = element->asElementRectangle();
const pdf::PDFPageContentElementLine* elementLine = element->asElementLine();
const pdf::PDFPageContentElementDot* elementDot = element->asElementDot();
const pdf::PDFPageContentElementFreehandCurve* elementFreehandCurve = element->asElementFreehandCurve();
const pdf::PDFPageContentImageElement* elementImage = element->asElementImage();
const pdf::PDFPageContentElementTextBox* elementTextBox = element->asElementTextBox();
if (editedElement)
{
contentStreamBuilder.writeEditedElement(editedElement->getElement());
}
if (elementRectangle)
{
QRectF rect = elementRectangle->getRectangle();
QPainterPath path;
if (elementRectangle->isRounded())
{
qreal radius = qMin(rect.width(), rect.height()) * 0.25;
path.addRoundedRect(rect, radius, radius, Qt::AbsoluteSize);
}
else
{
path.addRect(rect);
}
const bool stroke = elementRectangle->getPen().style() != Qt::NoPen;
const bool fill = elementRectangle->getBrush().style() != Qt::NoBrush;
contentStreamBuilder.writeStyledPath(path, elementRectangle->getPen(), elementRectangle->getBrush(), stroke, fill);
}
if (elementLine)
{
QLineF line = elementLine->getLine();
QPainterPath path;
path.moveTo(line.p1());
path.lineTo(line.p2());
contentStreamBuilder.writeStyledPath(path, elementLine->getPen(), elementLine->getBrush(), true, false);
}
if (elementDot)
{
QPen pen = elementDot->getPen();
const qreal radius = pen.widthF() * 0.5;
QPainterPath path;
path.addEllipse(elementDot->getPoint(), radius, radius);
contentStreamBuilder.writeStyledPath(path, Qt::NoPen, QBrush(pen.color()), false, true);
}
if (elementFreehandCurve)
{
QPainterPath path = elementFreehandCurve->getCurve();
contentStreamBuilder.writeStyledPath(path, elementFreehandCurve->getPen(), elementFreehandCurve->getBrush(), true, false);
}
if (elementImage)
{
QImage image = elementImage->getImage();
if (!image.isNull())
{
contentStreamBuilder.writeImage(image, elementImage->getRectangle());
}
else
{
// It is probably an SVG image
pdf::PDFContentEditorPaintDevice paintDevice(&contentStreamBuilder, mediaBox, mediaBoxMM);
QPainter painter(&paintDevice);
QList<pdf::PDFRenderError> errors;
pdf::PDFTextLayoutGetter textLayoutGetter(nullptr, pageIndex);
elementImage->drawPage(&painter, &m_scene, pageIndex, nullptr, textLayoutGetter, QTransform(), convertor, errors);
}
}
if (elementTextBox)
{
pdf::PDFContentEditorPaintDevice paintDevice(&contentStreamBuilder, mediaBox, mediaBoxMM);
QPainter painter(&paintDevice);
QList<pdf::PDFRenderError> errors;
pdf::PDFTextLayoutGetter textLayoutGetter(nullptr, pageIndex);
elementTextBox->drawPage(&painter, &m_scene, pageIndex, nullptr, textLayoutGetter, QTransform(), convertor, errors);
}
}
elements = std::move(it->second);
}
QStringList errors = contentStreamBuilder.getErrors();
contentStreamBuilder.clearErrors();
if (!errors.empty())
if (!updatePageContent(pageIndex, elements, builder))
{
const int errorCount = errors.size();
if (errors.size() > 3)
{
errors.resize(3);
}
QString message = tr("Errors (%2) occured while creating content stream on page %3.<br>%1").arg(errors.join("<br>")).arg(errorCount).arg(pageIndex + 1);
if (QMessageBox::question(m_dataExchangeInterface->getMainWindow(), tr("Error"), message, QMessageBox::Abort, QMessageBox::Ignore) == QMessageBox::Abort)
{
return false;
}
return false;
}
pdf::PDFDocumentBuilder* builder = modifier.getBuilder();
pdf::PDFDictionary fontDictionary = contentStreamBuilder.getFontDictionary();
pdf::PDFDictionary xobjectDictionary = contentStreamBuilder.getXObjectDictionary();
pdf::PDFDictionary graphicStateDictionary = contentStreamBuilder.getGraphicStateDictionary();
builder->replaceObjectsByReferences(fontDictionary);
builder->replaceObjectsByReferences(xobjectDictionary);
builder->replaceObjectsByReferences(graphicStateDictionary);
pdf::PDFArray array;
array.appendItem(pdf::PDFObject::createName("FlateDecode"));
// Compress the content stream
QByteArray compressedData = pdf::PDFFlateDecodeFilter::compress(contentStreamBuilder.getOutputContent());
pdf::PDFDictionary contentDictionary;
contentDictionary.setEntry(pdf::PDFInplaceOrMemoryString("Length"), pdf::PDFObject::createInteger(compressedData.size()));
contentDictionary.setEntry(pdf::PDFInplaceOrMemoryString("Filter"), pdf::PDFObject::createArray(std::make_shared<pdf::PDFArray>(qMove(array))));
pdf::PDFObject contentObject = pdf::PDFObject::createStream(std::make_shared<pdf::PDFStream>(qMove(contentDictionary), qMove(compressedData)));
pdf::PDFObject pageObject = builder->getObjectByReference(page->getPageReference());
pdf::PDFObjectFactory factory;
factory.beginDictionary();
factory.beginDictionaryItem("Resources");
factory.beginDictionary();
if (!fontDictionary.isEmpty())
{
factory.beginDictionaryItem("Font");
factory << fontDictionary;
factory.endDictionaryItem();
}
if (!xobjectDictionary.isEmpty())
{
factory.beginDictionaryItem("XObject");
factory << xobjectDictionary;
factory.endDictionaryItem();
}
if (!graphicStateDictionary.isEmpty())
{
factory.beginDictionaryItem("ExtGState");
factory << graphicStateDictionary;
factory.endDictionaryItem();
}
factory.endDictionary();
factory.endDictionaryItem();
factory.beginDictionaryItem("Contents");
factory << builder->addObject(std::move(contentObject));
factory.endDictionaryItem();
factory.endDictionary();
pageObject = pdf::PDFObjectManipulator::merge(pageObject, factory.takeObject(), pdf::PDFObjectManipulator::RemoveNullObjects);
builder->setObject(page->getPageReference(), std::move(pageObject));
modifier.markReset();
}
@@ -517,6 +530,15 @@ void EditorPlugin::onSceneEditElement(const std::set<pdf::PDFInteger>& elements)
if (pdf::PDFPageContentEditorStyleSettings::showEditElementStyleDialog(m_dataExchangeInterface->getMainWindow(), element))
{
if (element->asElementEdited())
{
pdf::PDFPageContentElementEdited* editedElement = dynamic_cast<pdf::PDFPageContentElementEdited*>(element);
if (editedElement->getElement()->asText())
{
updateTextElement(editedElement);
}
}
updateGraphics();
}
}
@@ -751,6 +773,55 @@ void EditorPlugin::updateEditedPages()
}
}
bool EditorPlugin::updateTextElement(pdf::PDFPageContentElementEdited* element)
{
pdf::PDFPageContentElementEdited* elementEdited = dynamic_cast<pdf::PDFPageContentElementEdited*>(element);
pdf::PDFEditedPageContentElementText* targetTextElement = elementEdited->getElement()->asText();
if (!targetTextElement)
{
return false;
}
pdf::PDFDocumentModifier modifier(m_document);
pdf::PDFDocumentBuilder* builder = modifier.getBuilder();
if (!updatePageContent(element->getPageIndex(), { element }, builder))
{
return false;
}
if (modifier.finalize())
{
pdf::PDFDocument* document = modifier.getDocument().get();
const pdf::PDFPage* page = document->getCatalog()->getPage(element->getPageIndex());
auto cms = m_widget->getDrawWidgetProxy()->getCMSManager()->getCurrentCMS();
pdf::PDFFontCache fontCache(64, 64);
pdf::PDFOptionalContentActivity activity(document, pdf::OCUsage::View, nullptr);
fontCache.setDocument(pdf::PDFModifiedDocument(document, &activity));
pdf::PDFPageContentEditorProcessor processor(page, document, &fontCache, cms.data(), &activity, QTransform(), pdf::PDFMeshQualitySettings());
QList<pdf::PDFRenderError> errors = processor.processContents();
Q_UNUSED(errors);
pdf::PDFEditedPageContent content = processor.takeEditedPageContent();
if (content.getElementCount() == 1)
{
pdf::PDFEditedPageContentElement* sourceElement = content.getElement(0);
pdf::PDFEditedPageContentElementText* sourceElementText = sourceElement->asText();
targetTextElement->setState(sourceElementText->getState());
targetTextElement->setTextPath(sourceElementText->getTextPath());
}
else
{
return false;
}
}
return true;
}
void EditorPlugin::onDrawSpaceChanged()
{
updateEditedPages();

5
Pdf4QtEditorPlugins/EditorPlugin/editorplugin.h
View File

@@ -112,6 +112,11 @@ private:
void updateDockWidget();
void updateEditedPages();
bool updatePageContent(pdf::PDFInteger pageIndex,
const std::vector<const pdf::PDFPageContentElement*>& elements,
pdf::PDFDocumentBuilder* builder);
bool updateTextElement(pdf::PDFPageContentElementEdited* element);
void onDrawSpaceChanged();
pdf::PDFWidgetTool* getActiveTool();

1
Pdf4QtLibWidgets/sources/pdfpagecontenteditorstylesettings.cpp
View File

@@ -283,6 +283,7 @@ bool PDFPageContentEditorStyleSettings::showEditElementStyleDialog(QWidget* pare
if (dialog.exec() == QDialog::Accepted)
{
widget->saveToElement(editedElement);
return true;
}
}
else

5
Pdf4QtLibWidgets/sources/pdfpagecontentelements.cpp
View File

@@ -36,6 +36,11 @@
namespace pdf
{
PDFPageContentElement::~PDFPageContentElement()
{
}
PDFInteger PDFPageContentElement::getPageIndex() const
{
return m_pageIndex;

2
Pdf4QtLibWidgets/sources/pdfpagecontentelements.h
View File

@@ -51,7 +51,7 @@ class PDF4QTLIBWIDGETSSHARED_EXPORT PDFPageContentElement
{
public:
explicit PDFPageContentElement() = default;
virtual ~PDFPageContentElement() = default;
virtual ~PDFPageContentElement();
virtual PDFPageContentElement* clone() const = 0;