fenix/PDF4QT
1
0
Fork 0
mirror of https://github.com/JakubMelka/PDF4QT.git synced 2025-06-05 21:59:17 +02:00
Code Issues Packages Projects Releases Wiki Activity

Thumbnails - first part

Browse Source
This commit is contained in:
Jakub Melka
2019-12-07 17:59:03 +01:00
parent 99ba0a0c09
commit 1be4aea954
17 changed files with 792 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

39
PdfForQtLib/sources/pdfdrawspacecontroller.cpp
View File

@@ -49,7 +49,7 @@ void PDFDrawSpaceController::setDocument(const PDFDocument* document, const PDFO
m_document = document;
m_fontCache.setDocument(document);
m_optionalContentActivity = optionalContentActivity;
connect(m_optionalContentActivity, &PDFOptionalContentActivity::optionalContentGroupStateChanged, this, &PDFDrawSpaceController::repaintNeeded);
connect(m_optionalContentActivity, &PDFOptionalContentActivity::optionalContentGroupStateChanged, this, &PDFDrawSpaceController::onOptionalContentGroupStateChanged);
recalculate();
}
}
@@ -133,6 +133,12 @@ QSizeF PDFDrawSpaceController::getReferenceBoundingBox() const
return rect.size();
}
void PDFDrawSpaceController::onOptionalContentGroupStateChanged()
{
emit pageImageChanged(true, { });
emit repaintNeeded();
}
void PDFDrawSpaceController::recalculate()
{
if (!m_document)
@@ -393,6 +399,7 @@ PDFDrawWidgetProxy::PDFDrawWidgetProxy(QObject* parent) :
m_controller = new PDFDrawSpaceController(this);
connect(m_controller, &PDFDrawSpaceController::drawSpaceChanged, this, &PDFDrawWidgetProxy::update);
connect(m_controller, &PDFDrawSpaceController::repaintNeeded, this, &PDFDrawWidgetProxy::repaintNeeded);
connect(m_controller, &PDFDrawSpaceController::pageImageChanged, this, &PDFDrawWidgetProxy::pageImageChanged);
}
PDFDrawWidgetProxy::~PDFDrawWidgetProxy()
@@ -603,6 +610,36 @@ void PDFDrawWidgetProxy::draw(QPainter* painter, QRect rect)
}
}
QImage PDFDrawWidgetProxy::drawThumbnailImage(PDFInteger pageIndex, int pixelSize) const
{
QImage image;
if (!m_controller->getDocument())
{
// No thumbnail - return empty image
return image;
}
if (const PDFPage* page = m_controller->getDocument()->getCatalog()->getPage(pageIndex))
{
QRectF pageRect = page->getRotatedMediaBox();
QSizeF pageSize = pageRect.size();
pageSize.scale(pixelSize, pixelSize, Qt::KeepAspectRatio);
QSize imageSize = pageSize.toSize();
if (imageSize.isValid())
{
image = QImage(imageSize, QImage::Format_RGBA8888_Premultiplied);
image.fill(Qt::white);
QPainter painter(&image);
PDFRenderer renderer(m_controller->getDocument(), m_controller->getFontCache(), m_controller->getOptionalContentActivity(), m_features, m_meshQualitySettings);
renderer.render(&painter, QRect(QPoint(0, 0), imageSize), pageIndex);
}
}
return image;
}
std::vector<PDFInteger> PDFDrawWidgetProxy::getPagesIntersectingRect(QRect rect) const
{
std::vector<PDFInteger> pages;