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This commit is contained in:
Jakub Melka
2019-05-07 18:21:22 +02:00
parent 0447b9e3a1
commit 3358d49240
29 changed files with 4648 additions and 4 deletions
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73
PdfForQtLib/sources/pdfpagecontentprocessor.cpp
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@ -18,6 +18,7 @@
#include "pdfpagecontentprocessor.h"
#include "pdfdocument.h"
#include "pdfexception.h"
#include "pdfimage.h"
namespace pdf
{
@ -156,6 +157,7 @@ PDFPageContentProcessor::PDFPageContentProcessor(const PDFPage* page, const PDFD
m_fontCache(fontCache),
m_colorSpaceDictionary(nullptr),
m_fontDictionary(nullptr),
m_xobjectDictionary(nullptr),
m_textBeginEndState(0)
{
Q_ASSERT(page);
@ -178,6 +180,7 @@ PDFPageContentProcessor::PDFPageContentProcessor(const PDFPage* page, const PDFD
m_colorSpaceDictionary = getDictionary(COLOR_SPACE_DICTIONARY);
m_fontDictionary = getDictionary("Font");
m_xobjectDictionary = getDictionary("XObject");
}
PDFPageContentProcessor::~PDFPageContentProcessor()
@ -277,6 +280,11 @@ void PDFPageContentProcessor::performClipping(const QPainterPath& path, Qt::Fill
Q_UNUSED(fillRule);
}
void PDFPageContentProcessor::performImagePainting(const QImage& image)
{
Q_UNUSED(image);
}
void PDFPageContentProcessor::performUpdateGraphicsState(const PDFPageContentProcessorState& state)
{
if (state.getStateFlags().testFlag(PDFPageContentProcessorState::StateTextFont) ||
@ -738,6 +746,13 @@ void PDFPageContentProcessor::processCommand(const QByteArray& command)
break;
}
case Operator::PaintXObject:
{
// Do, paint the X Object (image, form, ...)
invokeOperator(&PDFPageContentProcessor::operatorPaintXObject);
break;
}
case Operator::Invalid:
{
m_errorList.append(PDFRenderError(RenderErrorType::Error, PDFTranslationContext::tr("Unknown operator '%1'.").arg(QString::fromLatin1(command))));
@ -1752,6 +1767,64 @@ void PDFPageContentProcessor::operatorTextSetSpacingAndShowText(PDFReal t_w, PDF
operatorTextNextLineShowText(qMove(text));
}
void PDFPageContentProcessor::operatorPaintXObject(PDFPageContentProcessor::PDFOperandName name)
{
if (m_xobjectDictionary)
{
const PDFObject& object = m_document->getObject(m_xobjectDictionary->get(name.name));
if (object.isStream())
{
const PDFStream* stream = object.getStream();
const PDFDictionary* streamDictionary = stream->getDictionary();
PDFDocumentDataLoaderDecorator loader(m_document);
QByteArray subtype = loader.readNameFromDictionary(streamDictionary, "Subtype");
if (subtype == "Image")
{
PDFColorSpacePointer colorSpace;
if (streamDictionary->hasKey("ColorSpace"))
{
const PDFObject& colorSpaceObject = m_document->getObject(streamDictionary->get("ColorSpace"));
if (colorSpaceObject.isName() || colorSpaceObject.isArray())
{
colorSpace = PDFAbstractColorSpace::createColorSpace(m_colorSpaceDictionary, m_document, colorSpaceObject);
}
else if (!colorSpaceObject.isNull())
{
throw PDFRendererException(RenderErrorType::Error, PDFTranslationContext::tr("Invalid color space of the image."));
}
}
PDFImage pdfImage = PDFImage::createImage(m_document, stream, qMove(colorSpace));
QImage image = pdfImage.getImage();
if (!image.isNull())
{
performImagePainting(image);
}
else
{
throw PDFRendererException(RenderErrorType::Error, PDFTranslationContext::tr("Can't decode the image."));
}
}
else
{
// TODO: Handle another XObjects
throw PDFRendererException(RenderErrorType::NotImplemented, PDFTranslationContext::tr("Unknown XObject type '%1'.").arg(QString::fromLatin1(subtype)));
}
}
else
{
throw PDFRendererException(RenderErrorType::Error, PDFTranslationContext::tr("Invalid format of XObject. Dictionary expected."));
}
}
else
{
throw PDFRendererException(RenderErrorType::Error, PDFTranslationContext::tr("XObject resource dictionary not found."));
}
}
void PDFPageContentProcessor::drawText(const TextSequence& textSequence)
{
if (textSequence.items.empty())