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Jakub Melka
2020-12-11 18:59:39 +01:00
parent 11ad8f2821
commit dc55950050
13 changed files with 856 additions and 18 deletions
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62
PdfForQtLib/sources/pdfcompiler.cpp
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@ -236,7 +236,8 @@ void PDFTextLayoutGenerator::performOutputCharacter(const PDFTextCharacterInfo&
PDFAsynchronousTextLayoutCompiler::PDFAsynchronousTextLayoutCompiler(PDFDrawWidgetProxy* proxy) :
BaseClass(proxy),
m_proxy(proxy),
m_isRunning(false)
m_isRunning(false),
m_cache(std::bind(&PDFAsynchronousTextLayoutCompiler::createTextLayout, this, std::placeholders::_1))
{
connect(&m_textLayoutCompileFutureWatcher, &QFutureWatcher<PDFTextLayoutStorage>::finished, this, &PDFAsynchronousTextLayoutCompiler::onTextLayoutCreated);
}
@ -279,6 +280,7 @@ void PDFAsynchronousTextLayoutCompiler::stop(bool clearCache)
if (clearCache)
{
m_textLayouts = std::nullopt;
m_cache.clear();
}
m_state = State::Inactive;
@ -300,6 +302,50 @@ void PDFAsynchronousTextLayoutCompiler::reset()
start();
}
PDFTextLayout PDFAsynchronousTextLayoutCompiler::createTextLayout(PDFInteger pageIndex)
{
PDFTextLayout result;
if (isTextLayoutReady())
{
result = getTextLayout(pageIndex);
}
else
{
if (m_state != State::Active || !m_proxy->getDocument())
{
// Engine is not active, do not calculate layout
return result;
}
const PDFCatalog* catalog = m_proxy->getDocument()->getCatalog();
if (pageIndex < 0 || pageIndex >= PDFInteger(catalog->getPageCount()))
{
return result;
}
if (!catalog->getPage(pageIndex))
{
// Invalid page index
return result;
}
const PDFPage* page = catalog->getPage(pageIndex);
Q_ASSERT(page);
bool guard = false;
m_proxy->getFontCache()->setCacheShrinkEnabled(&guard, false);
PDFCMSPointer cms = m_proxy->getCMSManager()->getCurrentCMS();
PDFTextLayoutGenerator generator(m_proxy->getFeatures(), page, m_proxy->getDocument(), m_proxy->getFontCache(), cms.data(), m_proxy->getOptionalContentActivity(), QMatrix(), m_proxy->getMeshQualitySettings());
generator.processContents();
result = generator.createTextLayout();
m_proxy->getFontCache()->setCacheShrinkEnabled(&guard, true);
}
return result;
}
PDFTextLayout PDFAsynchronousTextLayoutCompiler::getTextLayout(PDFInteger pageIndex)
{
if (m_state != State::Active || !m_proxy->getDocument())
@ -318,18 +364,7 @@ PDFTextLayout PDFAsynchronousTextLayoutCompiler::getTextLayout(PDFInteger pageIn
PDFTextLayoutGetter PDFAsynchronousTextLayoutCompiler::getTextLayoutLazy(PDFInteger pageIndex)
{
if (m_state != State::Active || !m_proxy->getDocument())
{
// Engine is not active, always return empty layout
return PDFTextLayoutGetter(nullptr, pageIndex);
}
if (m_textLayouts)
{
return m_textLayouts->getTextLayoutLazy(pageIndex);
}
return PDFTextLayoutGetter(nullptr, pageIndex);
return PDFTextLayoutGetter(&m_cache, pageIndex);
}
PDFTextSelection PDFAsynchronousTextLayoutCompiler::getTextSelectionAll(QColor color) const
@ -454,6 +489,7 @@ void PDFAsynchronousTextLayoutCompiler::onTextLayoutCreated()
{
m_proxy->getFontCache()->setCacheShrinkEnabled(this, true);
m_proxy->getProgress()->finish();
m_cache.clear();
m_textLayouts = m_textLayoutCompileFuture.result();
m_isRunning = false;