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Object content viewer

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This commit is contained in:
Jakub Melka
2021-06-13 18:54:47 +02:00
parent c0b0fb6010
commit f4ea513208
11 changed files with 283 additions and 6 deletions
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192
Pdf4QtViewerPlugins/ObjectInspectorPlugin/objectviewerwidget.cpp
View File

@ -18,6 +18,11 @@
#include "objectviewerwidget.h"
#include "ui_objectviewerwidget.h"
#include "pdfimage.h"
#include "pdfencoding.h"
#include "pdfdocumentwriter.h"
#include "pdfexception.h"
namespace pdfplugin
{
@ -31,6 +36,8 @@ ObjectViewerWidget::ObjectViewerWidget(bool isPinned, QWidget* parent) :
QWidget(parent),
ui(new Ui::ObjectViewerWidget),
m_isPinned(isPinned),
m_cms(nullptr),
m_document(nullptr),
m_isRootObject(false)
{
ui->setupUi(this);
@ -60,7 +67,7 @@ void ObjectViewerWidget::setData(pdf::PDFObjectReference currentReference, pdf::
{
if (m_currentReference != currentReference ||
m_currentObject != currentObject ||
m_isRootObject = isRootObject)
m_isRootObject != isRootObject)
{
m_currentReference = currentReference;
m_currentObject = currentObject;
@ -70,10 +77,193 @@ void ObjectViewerWidget::setData(pdf::PDFObjectReference currentReference, pdf::
}
}
void ObjectViewerWidget::updateUi()
{
if (m_currentReference.isValid())
{
QString referenceText = tr("%1 %2 R").arg(m_currentReference.objectNumber).arg(m_currentReference.generation);
if (m_isRootObject)
{
ui->referenceEdit->setText(referenceText);
}
else
{
ui->referenceEdit->setText(tr("Part of object %1").arg(referenceText));
}
}
else
{
ui->referenceEdit->setText(tr("<none>"));
}
switch (m_currentObject.getType())
{
case pdf::PDFObject::Type::Null:
ui->typeEdit->setText(tr("Null"));
break;
case pdf::PDFObject::Type::Bool:
ui->typeEdit->setText(tr("Bool"));
break;
case pdf::PDFObject::Type::Int:
ui->typeEdit->setText(tr("Integer"));
break;
case pdf::PDFObject::Type::Real:
ui->typeEdit->setText(tr("Real"));
break;
case pdf::PDFObject::Type::String:
ui->typeEdit->setText(tr("String"));
break;
case pdf::PDFObject::Type::Name:
ui->typeEdit->setText(tr("Name"));
break;
case pdf::PDFObject::Type::Array:
ui->typeEdit->setText(tr("Array"));
break;
case pdf::PDFObject::Type::Dictionary:
ui->typeEdit->setText(tr("Dictionary"));
break;
case pdf::PDFObject::Type::Stream:
ui->typeEdit->setText(tr("Stream"));
break;
case pdf::PDFObject::Type::Reference:
ui->typeEdit->setText(tr("Reference"));
break;
default:
Q_ASSERT(false);
break;
}
QLocale locale;
switch (m_currentObject.getType())
{
case pdf::PDFObject::Type::Null:
ui->descriptionEdit->setText(tr("null"));
break;
case pdf::PDFObject::Type::Bool:
ui->descriptionEdit->setText(m_currentObject.getBool() ? tr("true") : tr("false"));
break;
case pdf::PDFObject::Type::Int:
ui->descriptionEdit->setText(locale.toString(m_currentObject.getInteger()));
break;
case pdf::PDFObject::Type::Real:
ui->descriptionEdit->setText(locale.toString(m_currentObject.getReal()));
break;
case pdf::PDFObject::Type::String:
ui->descriptionEdit->setText(QString("\"%1\"").arg(pdf::PDFEncoding::convertSmartFromByteStringToRepresentableQString(m_currentObject.getString())));
break;
case pdf::PDFObject::Type::Name:
ui->descriptionEdit->setText(QString("/%1").arg(QString::fromLatin1(m_currentObject.getString().toPercentEncoding())));
break;
case pdf::PDFObject::Type::Array:
ui->descriptionEdit->setText(tr("Array [%1 items]").arg(locale.toString(m_currentObject.getArray()->getCount())));
break;
case pdf::PDFObject::Type::Dictionary:
ui->descriptionEdit->setText(tr("Dictionary [%1 items]").arg(locale.toString(m_currentObject.getDictionary()->getCount())));
break;
case pdf::PDFObject::Type::Stream:
ui->descriptionEdit->setText(tr("Stream [%1 items, %2 data bytes]").arg(locale.toString(m_currentObject.getStream()->getDictionary()->getCount()), locale.toString(m_currentObject.getStream()->getContent()->size())));
break;
case pdf::PDFObject::Type::Reference:
ui->descriptionEdit->setText(QString("%1 %2 R").arg(m_currentObject.getReference().objectNumber).arg(m_currentObject.getReference().generation));
break;
default:
Q_ASSERT(false);
break;
}
if (m_currentObject.isStream())
{
try
{
pdf::PDFDocumentDataLoaderDecorator loader(m_document);
const pdf::PDFStream* stream = m_currentObject.getStream();
const pdf::PDFDictionary* dictionary = stream->getDictionary();
if (loader.readNameFromDictionary(dictionary, "Type") == "XObject" &&
loader.readNameFromDictionary(dictionary, "Subtype") == "Image")
{
pdf::PDFColorSpacePointer colorSpace;
if (dictionary->hasKey("ColorSpace"))
{
const pdf::PDFObject& colorSpaceObject = m_document->getObject(dictionary->get("ColorSpace"));
if (colorSpaceObject.isName() || colorSpaceObject.isArray())
{
pdf::PDFDictionary dummyColorSpaceDictionary;
colorSpace = pdf::PDFAbstractColorSpace::createColorSpace(&dummyColorSpaceDictionary, m_document, colorSpaceObject);
}
else if (!colorSpaceObject.isNull())
{
throw pdf::PDFException(tr("Invalid color space of the image."));
}
}
pdf::PDFRenderErrorReporterDummy dummyErrorReporter;
pdf::PDFImage pdfImage = pdf::PDFImage::createImage(m_document, stream, qMove(colorSpace), false, pdf::RenderingIntent::Perceptual, &dummyErrorReporter);
QImage image = pdfImage.getImage(m_cms, &dummyErrorReporter);
ui->stackedWidget->setCurrentWidget(ui->imageBrowserPage);
ui->imageBrowser->setPixmap(QPixmap::fromImage(image));
}
else
{
QByteArray data = m_document->getDecodedStream(stream);
QByteArray percentEncodedData = data.toPercentEncoding(" \n");
ui->contentTextBrowser->setText(QString::fromLatin1(percentEncodedData));
ui->stackedWidget->setCurrentWidget(ui->contentTextBrowserPage);
}
}
catch (pdf::PDFException exception)
{
ui->contentTextBrowser->setText(exception.getMessage());
ui->stackedWidget->setCurrentWidget(ui->contentTextBrowserPage);
}
}
else
{
QByteArray serializedObject = pdf::PDFDocumentWriter::getSerializedObject(m_currentObject);
QByteArray percentEncodedData = serializedObject.toPercentEncoding(" \n");
ui->contentTextBrowser->setText(QString::fromLatin1(percentEncodedData));
ui->stackedWidget->setCurrentWidget(ui->contentTextBrowserPage);
}
}
void ObjectViewerWidget::updatePinnedUi()
{
ui->pinButton->setEnabled(!m_isPinned);
ui->unpinButton->setEnabled(m_isPinned);
}
const pdf::PDFCMS* ObjectViewerWidget::getCms() const
{
return m_cms;
}
void ObjectViewerWidget::setCms(const pdf::PDFCMS* cms)
{
m_cms = cms;
}
const pdf::PDFDocument* ObjectViewerWidget::getDocument() const
{
return m_document;
}
void ObjectViewerWidget::setDocument(const pdf::PDFDocument* document)
{
m_document = document;
}
} // namespace pdfplugin