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Editor plugin: Encoding content - text encoding

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Jakub Melka
2024-05-08 17:27:27 +02:00
parent eeadf328b2
commit 70b7c2464f
4 changed files with 220 additions and 0 deletions
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68
Pdf4QtLibCore/sources/pdfpagecontenteditorprocessor.cpp
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@ -16,6 +16,7 @@
// along with PDF4QT. If not, see <https://www.gnu.org/licenses/>.
#include "pdfpagecontenteditorprocessor.h"
#include "pdfdocumentbuilder.h"
#include <QStringBuilder>
#include <QXmlStreamReader>
@ -890,6 +891,7 @@ void PDFPageContentEditorContentStreamBuilder::writeText(QTextStream& stream, co
stream << "q BT" << Qt::endl;
QXmlStreamReader reader(text);
m_textFont = m_currentState.getTextFont();
auto isCommand = [&reader](const char* tag) -> bool
{
@ -1009,6 +1011,7 @@ void PDFPageContentEditorContentStreamBuilder::writeText(QTextStream& stream, co
}
else
{
v1 = selectFont(v1);
stream << "/" << v1 << " " << v2 << " Tf" << Qt::endl;
}
}
@ -1087,12 +1090,77 @@ void PDFPageContentEditorContentStreamBuilder::writeText(QTextStream& stream, co
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!"));
}
}
}
stream << "ET Q" << Qt::endl;
}
QByteArray PDFPageContentEditorContentStreamBuilder::selectFont(const QByteArray& font)
{
m_textFont = nullptr;
PDFObject fontObject = m_fontDictionary.get(font);
if (!fontObject.isNull())
{
try
{
m_textFont = PDFFont::createFont(fontObject, font, m_document);
}
catch (const PDFException&)
{
addError(PDFTranslationContext::tr("Font '%1' is invalid.").arg(QString::fromLatin1(font)));
}
}
if (!m_textFont)
{
QByteArray defaultFontKey = "PDF4QT_DefFnt";
if (!m_fontDictionary.hasKey(defaultFontKey))
{
PDFObjectFactory defaultFontFactory;
defaultFontFactory.beginDictionary();
defaultFontFactory.beginDictionaryItem("Type");
defaultFontFactory << WrapName("Font");
defaultFontFactory.endDictionaryItem();
defaultFontFactory.beginDictionaryItem("Subtype");
defaultFontFactory << WrapName("Type1");
defaultFontFactory.endDictionaryItem();
defaultFontFactory.beginDictionaryItem("BaseFont");
defaultFontFactory << WrapName("Helvetica");
defaultFontFactory.endDictionaryItem();
defaultFontFactory.beginDictionaryItem("Encoding");
defaultFontFactory << WrapName("WinAnsiEncoding");
defaultFontFactory.endDictionaryItem();
defaultFontFactory.endDictionary();
m_fontDictionary.setEntry(PDFInplaceOrMemoryString(defaultFontKey), defaultFontFactory.takeObject());
}
m_textFont = PDFFont::createFont(fontObject, font, m_document);
}
}
void PDFPageContentEditorContentStreamBuilder::addError(const QString& error)
{