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Editor plugin: Edit text

This commit is contained in:
Jakub Melka 2024-06-02 16:57:47 +02:00
parent d83689cddb
commit 9222a60039
4 changed files with 250 additions and 198 deletions
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15
Pdf4QtEditorPlugins/EditorPlugin/editorplugin.cpp
View File

@ -151,7 +151,7 @@ void EditorPlugin::setWidget(pdf::PDFWidget* widget)
connect(&m_scene, &pdf::PDFPageContentScene::selectionChanged, this, &EditorPlugin::onSceneSelectionChanged);
connect(&m_scene, &pdf::PDFPageContentScene::editElementRequest, this, &EditorPlugin::onSceneEditElement);
connect(clearAction, &QAction::triggered, &m_scene, &pdf::PDFPageContentScene::clear);
connect(activateAction, &QAction::triggered, this, &EditorPlugin::setActive);
connect(activateAction, &QAction::triggered, this, &EditorPlugin::onSetActive);
connect(m_widget->getDrawWidgetProxy(), &pdf::PDFDrawWidgetProxy::drawSpaceChanged, this, &EditorPlugin::onDrawSpaceChanged);
updateActions();
@ -200,7 +200,7 @@ bool EditorPlugin::save()
const pdf::PDFPage* page = m_document->getCatalog()->getPage(pageIndex);
const pdf::PDFEditedPageContent& editedPageContent = m_editedPageContent.at(pageIndex);
pdf::PDFPageContentEditorContentStreamBuilder contentStreamBuilder;
pdf::PDFPageContentEditorContentStreamBuilder contentStreamBuilder(m_document);
contentStreamBuilder.setFontDictionary(editedPageContent.getFontDictionary());
auto it = elementsByPage.find(pageIndex);
@ -477,6 +477,17 @@ void EditorPlugin::setActive(bool active)
}
}
void EditorPlugin::onSetActive(bool active)
{
if (!active && !save())
{
updateActions();
return;
}
setActive(active);
}
void EditorPlugin::updateActions()
{
m_actions[Activate]->setEnabled(m_document);

1
Pdf4QtEditorPlugins/EditorPlugin/editorplugin.h
View File

@ -103,6 +103,7 @@ private:
};
void setActive(bool active);
void onSetActive(bool active);
void updateActions();
void updateGraphics();

426
Pdf4QtLibCore/sources/pdfpagecontenteditorprocessor.cpp
View File

@ -778,7 +778,8 @@ void PDFEditedPageContentElementText::setItemsAsText(const QString& newItemsAsTe
m_itemsAsText = newItemsAsText;
}
PDFPageContentEditorContentStreamBuilder::PDFPageContentEditorContentStreamBuilder()
PDFPageContentEditorContentStreamBuilder::PDFPageContentEditorContentStreamBuilder(PDFDocument* document) :
m_document(document)
{
}
@ -1147,231 +1148,266 @@ void PDFPageContentEditorContentStreamBuilder::writeText(QTextStream& stream, co
{
stream << "q BT" << Qt::endl;
QXmlStreamReader reader(text);
m_textFont = m_currentState.getTextFont();
QString xml = QString("<?xml version=\"1.0\" encoding=\"UTF-8\"?><doc>%1</doc>").arg(text);
auto isCommand = [&reader](const char* tag) -> bool
{
QString tagString = reader.name().toString();
QXmlStreamAttributes attributes = reader.attributes();
return tagString == "tr" && attributes.size() == 1 && attributes.hasAttribute("v");
};
QXmlStreamReader reader(xml);
m_textFont = m_currentState.getTextFont();
while (!reader.atEnd() && !reader.hasError())
{
reader.readNext();
if (reader.isStartElement())
switch (reader.tokenType())
{
QXmlStreamAttributes attributes = reader.attributes();
case QXmlStreamReader::NoToken:
break;
if (isCommand("tr"))
{
const QXmlStreamAttribute& attribute = attributes.front();
bool ok = false;
const int textRenderingMode = attribute.value().toInt(&ok);
if (!ok || textRenderingMode < 0 || textRenderingMode > 7)
{
addError(PDFTranslationContext::tr("Invalid rendering mode '%1'. Valid values are 0-7.").arg(textRenderingMode));
}
else
{
stream << textRenderingMode << " Tr" << Qt::endl;
}
}
else if (isCommand("ts"))
{
const QXmlStreamAttribute& attribute = attributes.front();
bool ok = false;
const double textRise = attribute.value().toDouble(&ok);
case QXmlStreamReader::Invalid:
addError(PDFTranslationContext::tr("Invalid XML text."));
break;
if (!ok)
{
addError(PDFTranslationContext::tr("Cannot convert text '%1' to number.").arg(attribute.value().toString()));
}
else
{
stream << textRise << " Ts" << Qt::endl;
}
}
else if (isCommand("tc"))
{
const QXmlStreamAttribute& attribute = attributes.front();
bool ok = false;
const double textCharacterSpacing = attribute.value().toDouble(&ok);
case QXmlStreamReader::StartDocument:
case QXmlStreamReader::EndDocument:
case QXmlStreamReader::EndElement:
case QXmlStreamReader::Comment:
case QXmlStreamReader::DTD:
case QXmlStreamReader::ProcessingInstruction:
case QXmlStreamReader::EntityReference:
break;
if (!ok)
{
addError(PDFTranslationContext::tr("Cannot convert text '%1' to number.").arg(attribute.value().toString()));
}
else
{
stream << textCharacterSpacing << " Tc" << Qt::endl;
}
}
else if (isCommand("tw"))
{
const QXmlStreamAttribute& attribute = attributes.front();
bool ok = false;
const double textWordSpacing = attribute.value().toDouble(&ok);
case QXmlStreamReader::StartElement:
writeTextCommand(stream, reader);
break;
if (!ok)
{
addError(PDFTranslationContext::tr("Cannot convert text '%1' to number.").arg(attribute.value().toString()));
}
else
{
stream << textWordSpacing << " Tw" << Qt::endl;
}
}
else if (isCommand("tl"))
case QXmlStreamReader::Characters:
{
const QXmlStreamAttribute& attribute = attributes.front();
bool ok = false;
const double textLeading = attribute.value().toDouble(&ok);
QString characters = reader.text().toString();
if (!ok)
if (m_textFont)
{
addError(PDFTranslationContext::tr("Cannot convert text '%1' to number.").arg(attribute.value().toString()));
}
else
{
stream << textLeading << " TL" << Qt::endl;
}
}
else if (isCommand("tz"))
{
const QXmlStreamAttribute& attribute = attributes.front();
bool ok = false;
const PDFReal textScaling = attribute.value().toDouble(&ok);
PDFEncodedText encodedText = m_textFont->encodeText(characters);
if (!ok)
{
addError(PDFTranslationContext::tr("Cannot convert text '%1' to number.").arg(attribute.value().toString()));
}
else
{
stream << textScaling << " Tz" << Qt::endl;
}
}
else if (reader.name().toString() == "tf")
{
if (attributes.hasAttribute("font") && attributes.hasAttribute("size"))
{
bool ok = false;
QByteArray v1 = attributes.value("font").toString().toLatin1();
PDFReal v2 = attributes.value("size").toDouble(&ok);
if (!ok)
if (!encodedText.encodedText.isEmpty())
{
addError(PDFTranslationContext::tr("Cannot convert text '%1' to number.").arg(attributes.value("size").toString()));
stream << "<" << encodedText.encodedText.toHex() << "> Tj" << Qt::endl;
}
else
if (!encodedText.isValid)
{
v1 = selectFont(v1);
stream << "/" << v1 << " " << v2 << " Tf" << Qt::endl;
addError(PDFTranslationContext::tr("Error during converting text to font encoding. Some characters were not converted: '%1'.").arg(encodedText.errorString));
}
}
else
{
addError(PDFTranslationContext::tr("Text font command requires two attributes - font and size."));
addError(PDFTranslationContext::tr("Text font not defined!"));
}
break;
}
else if (reader.name().toString() == "tpos")
{
if (attributes.hasAttribute("x") && attributes.hasAttribute("y"))
{
bool ok1 = false;
bool ok2 = false;
PDFReal v1 = attributes.value("x").toDouble(&ok1);
PDFReal v2 = attributes.value("y").toDouble(&ok2);
if (!ok1)
{
addError(PDFTranslationContext::tr("Cannot convert text '%1' to number.").arg(attributes.value("x").toString()));
}
else if (!ok2)
{
addError(PDFTranslationContext::tr("Cannot convert text '%1' to number.").arg(attributes.value("y").toString()));
}
else
{
stream << v1 << " " << v2 << " Td" << Qt::endl;
}
}
else
{
addError(PDFTranslationContext::tr("Text translation command requires two attributes - x and y."));
}
}
else if (reader.name().toString() == "tmatrix")
{
if (attributes.hasAttribute("m11") && attributes.hasAttribute("m12") &&
attributes.hasAttribute("m21") && attributes.hasAttribute("m22") &&
attributes.hasAttribute("x") && attributes.hasAttribute("y"))
{
bool ok1 = false;
bool ok2 = false;
bool ok3 = false;
bool ok4 = false;
bool ok5 = false;
bool ok6 = false;
PDFReal m11 = attributes.value("m11").toDouble(&ok1);
PDFReal m12 = attributes.value("m12").toDouble(&ok2);
PDFReal m21 = attributes.value("m21").toDouble(&ok3);
PDFReal m22 = attributes.value("m22").toDouble(&ok4);
PDFReal x = attributes.value("x").toDouble(&ok5);
PDFReal y = attributes.value("y").toDouble(&ok6);
if (!ok1 || !ok2 || !ok3 || !ok4 || !ok5 | !ok6)
{
addError(PDFTranslationContext::tr("Invalid text matrix parameters."));
}
else
{
stream << m11 << " " << m12 << " " << m21 << " " << m22 << " " << x << " " << y << " Tm" << Qt::endl;
}
}
else
{
addError(PDFTranslationContext::tr("Set text matrix command requires six elements - m11, m12, m21, m22, x, y."));
}
}
else
{
addError(PDFTranslationContext::tr("Invalid command '%1'.").arg(reader.name().toString()));
}
}
if (reader.isCharacters())
{
QString characters = reader.text().toString();
if (m_textFont)
{
PDFEncodedText encodedText = m_textFont->encodeText(characters);
if (!encodedText.encodedText.isEmpty())
{
stream << "<" << encodedText.encodedText.toHex() << "> Tj" << Qt::endl;
}
if (!encodedText.isValid)
{
addError(PDFTranslationContext::tr("Error during converting text to font encoding. Some characters were not converted: '%1'.").arg(encodedText.errorString));
}
}
else
{
addError(PDFTranslationContext::tr("Text font not defined!"));
}
default:
Q_ASSERT(false);
break;
}
}
stream << "ET Q" << Qt::endl;
}
void PDFPageContentEditorContentStreamBuilder::writeTextCommand(QTextStream& stream, const QXmlStreamReader& reader)
{
QXmlStreamAttributes attributes = reader.attributes();
auto isCommand = [&reader](const char* tag) -> bool
{
QString tagString = reader.name().toString();
QXmlStreamAttributes attributes = reader.attributes();
return tagString == QLatin1String(tag) && attributes.size() == 1 && attributes.hasAttribute("v");
};
if (reader.name().toString() == "doc")
{
return;
}
if (isCommand("tr"))
{
const QXmlStreamAttribute& attribute = attributes.front();
bool ok = false;
const int textRenderingMode = attribute.value().toInt(&ok);
if (!ok || textRenderingMode < 0 || textRenderingMode > 7)
{
addError(PDFTranslationContext::tr("Invalid rendering mode '%1'. Valid values are 0-7.").arg(textRenderingMode));
}
else
{
stream << textRenderingMode << " Tr" << Qt::endl;
}
}
else if (isCommand("ts"))
{
const QXmlStreamAttribute& attribute = attributes.front();
bool ok = false;
const double textRise = attribute.value().toDouble(&ok);
if (!ok)
{
addError(PDFTranslationContext::tr("Cannot convert text '%1' to number.").arg(attribute.value().toString()));
}
else
{
stream << textRise << " Ts" << Qt::endl;
}
}
else if (isCommand("tc"))
{
const QXmlStreamAttribute& attribute = attributes.front();
bool ok = false;
const double textCharacterSpacing = attribute.value().toDouble(&ok);
if (!ok)
{
addError(PDFTranslationContext::tr("Cannot convert text '%1' to number.").arg(attribute.value().toString()));
}
else
{
stream << textCharacterSpacing << " Tc" << Qt::endl;
}
}
else if (isCommand("tw"))
{
const QXmlStreamAttribute& attribute = attributes.front();
bool ok = false;
const double textWordSpacing = attribute.value().toDouble(&ok);
if (!ok)
{
addError(PDFTranslationContext::tr("Cannot convert text '%1' to number.").arg(attribute.value().toString()));
}
else
{
stream << textWordSpacing << " Tw" << Qt::endl;
}
}
else if (isCommand("tl"))
{
const QXmlStreamAttribute& attribute = attributes.front();
bool ok = false;
const double textLeading = attribute.value().toDouble(&ok);
if (!ok)
{
addError(PDFTranslationContext::tr("Cannot convert text '%1' to number.").arg(attribute.value().toString()));
}
else
{
stream << textLeading << " TL" << Qt::endl;
}
}
else if (isCommand("tz"))
{
const QXmlStreamAttribute& attribute = attributes.front();
bool ok = false;
const PDFReal textScaling = attribute.value().toDouble(&ok);
if (!ok)
{
addError(PDFTranslationContext::tr("Cannot convert text '%1' to number.").arg(attribute.value().toString()));
}
else
{
stream << textScaling << " Tz" << Qt::endl;
}
}
else if (reader.name().toString() == "tf")
{
if (attributes.hasAttribute("font") && attributes.hasAttribute("size"))
{
bool ok = false;
QByteArray v1 = attributes.value("font").toString().toLatin1();
PDFReal v2 = attributes.value("size").toDouble(&ok);
if (!ok)
{
addError(PDFTranslationContext::tr("Cannot convert text '%1' to number.").arg(attributes.value("size").toString()));
}
else
{
v1 = selectFont(v1);
stream << "/" << v1 << " " << v2 << " Tf" << Qt::endl;
}
}
else
{
addError(PDFTranslationContext::tr("Text font command requires two attributes - font and size."));
}
}
else if (reader.name().toString() == "tpos")
{
if (attributes.hasAttribute("x") && attributes.hasAttribute("y"))
{
bool ok1 = false;
bool ok2 = false;
PDFReal v1 = attributes.value("x").toDouble(&ok1);
PDFReal v2 = attributes.value("y").toDouble(&ok2);
if (!ok1)
{
addError(PDFTranslationContext::tr("Cannot convert text '%1' to number.").arg(attributes.value("x").toString()));
}
else if (!ok2)
{
addError(PDFTranslationContext::tr("Cannot convert text '%1' to number.").arg(attributes.value("y").toString()));
}
else
{
stream << v1 << " " << v2 << " Td" << Qt::endl;
}
}
else
{
addError(PDFTranslationContext::tr("Text translation command requires two attributes - x and y."));
}
}
else if (reader.name().toString() == "tmatrix")
{
if (attributes.hasAttribute("m11") && attributes.hasAttribute("m12") &&
attributes.hasAttribute("m21") && attributes.hasAttribute("m22") &&
attributes.hasAttribute("x") && attributes.hasAttribute("y"))
{
bool ok1 = false;
bool ok2 = false;
bool ok3 = false;
bool ok4 = false;
bool ok5 = false;
bool ok6 = false;
PDFReal m11 = attributes.value("m11").toDouble(&ok1);
PDFReal m12 = attributes.value("m12").toDouble(&ok2);
PDFReal m21 = attributes.value("m21").toDouble(&ok3);
PDFReal m22 = attributes.value("m22").toDouble(&ok4);
PDFReal x = attributes.value("x").toDouble(&ok5);
PDFReal y = attributes.value("y").toDouble(&ok6);
if (!ok1 || !ok2 || !ok3 || !ok4 || !ok5 | !ok6)
{
addError(PDFTranslationContext::tr("Invalid text matrix parameters."));
}
else
{
stream << m11 << " " << m12 << " " << m21 << " " << m22 << " " << x << " " << y << " Tm" << Qt::endl;
}
}
else
{
addError(PDFTranslationContext::tr("Set text matrix command requires six elements - m11, m12, m21, m22, x, y."));
}
}
else
{
addError(PDFTranslationContext::tr("Invalid command '%1'.").arg(reader.name().toString()));
}
}
void PDFPageContentEditorContentStreamBuilder::writeImage(QTextStream& stream, const QImage& image)
{
QByteArray key;

6
Pdf4QtLibCore/sources/pdfpagecontenteditorprocessor.h
View File

@ -22,6 +22,8 @@
#include <memory>
class QXmlStreamReader;
namespace pdf
{
@ -211,7 +213,7 @@ private:
class PDF4QTLIBCORESHARED_EXPORT PDFPageContentEditorContentStreamBuilder
{
public:
PDFPageContentEditorContentStreamBuilder();
PDFPageContentEditorContentStreamBuilder(PDFDocument* document);
void writeStateDifference(QTextStream& stream, const PDFPageContentProcessorState& state);
void writeElement(const PDFEditedPageContentElement* element);
@ -232,7 +234,9 @@ private:
const QPainterPath& path,
bool isStroking,
bool isFilling);
void writeText(QTextStream& stream, const QString& text);
void writeTextCommand(QTextStream& stream, const QXmlStreamReader& reader);
void writeImage(QTextStream& stream, const QImage& image);