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Editor plugin: Image

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Jakub Melka
2024-06-15 16:03:54 +02:00
parent 05cf65b381
commit aa92fabd79
5 changed files with 74 additions and 5 deletions
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27
Pdf4QtLibCore/sources/pdfpagecontenteditorcontentstreambuilder.cpp
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@ -709,16 +709,17 @@ void PDFPageContentEditorContentStreamBuilder::writeImage(QTextStream& stream, c
array.appendItem(PDFObject::createName("FlateDecode"));
QImage codedImage = image;
codedImage = codedImage.convertToFormat(QImage::Format_ARGB32);
codedImage = codedImage.convertToFormat(QImage::Format_RGB888);
QByteArray decodedStream(reinterpret_cast<const char*>(image.constBits()), image.sizeInBytes());
// Compress the content stream
QByteArray compressedData = PDFFlateDecodeFilter::compress(decodedStream);
PDFDictionary imageDictionary;
imageDictionary.setEntry(PDFInplaceOrMemoryString("Subtitle"), PDFObject::createName("Image"));
imageDictionary.setEntry(PDFInplaceOrMemoryString("Subtype"), PDFObject::createName("Image"));
imageDictionary.setEntry(PDFInplaceOrMemoryString("Width"), PDFObject::createInteger(image.width()));
imageDictionary.setEntry(PDFInplaceOrMemoryString("Height"), PDFObject::createInteger(image.height()));
imageDictionary.setEntry(PDFInplaceOrMemoryString("Predictor"), PDFObject::createInteger(1));
imageDictionary.setEntry(PDFInplaceOrMemoryString("ColorSpace"), PDFObject::createName("DeviceRGB"));
imageDictionary.setEntry(PDFInplaceOrMemoryString("BitsPerComponent"), PDFObject::createInteger(8));
imageDictionary.setEntry(PDFInplaceOrMemoryString("Length"), PDFObject::createInteger(compressedData.size()));
@ -811,4 +812,26 @@ void PDFPageContentEditorContentStreamBuilder::writeStyledPath(const QPainterPat
writePainterPath(stream, path, isStroking, isFilling);
}
void PDFPageContentEditorContentStreamBuilder::writeImage(const QImage& image,
const QRectF& rectangle)
{
QTextStream stream(&m_outputContent, QDataStream::WriteOnly | QDataStream::Append);
stream << "q" << Qt::endl;
QTransform imageTransform(rectangle.width(), 0, 0, -rectangle.height(), rectangle.left(), rectangle.bottom());
PDFReal m11 = imageTransform.m11();
PDFReal m12 = imageTransform.m12();
PDFReal m21 = imageTransform.m21();
PDFReal m22 = imageTransform.m22();
PDFReal x = imageTransform.dx();
PDFReal y = imageTransform.dy();
stream << m11 << " " << m12 << " " << m21 << " " << m22 << " " << x << " " << y << " cm" << Qt::endl;
writeImage(stream, image);
stream << "Q" << Qt::endl;
}
} // namespace pdf