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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
*/
#include <utility>
#include <vcl/VectorGraphicSearch.hxx>
#include <vcl/filter/PDFiumLibrary.hxx>
#include <tools/UnitConversion.hxx>
#include <sal/config.h>
namespace
{
class SearchContext
{
private:
std::unique_ptr<vcl::pdf::PDFiumDocument>& mpPdfDocument;
std::unique_ptr<vcl::pdf::PDFiumPage> mpPage;
std::unique_ptr<vcl::pdf::PDFiumTextPage> mpTextPage;
std::unique_ptr<vcl::pdf::PDFiumSearchHandle> mpSearchHandle;
public:
sal_Int32 mnPageIndex;
int mnCurrentIndex;
OUString maSearchString;
VectorGraphicSearchOptions maOptions;
SearchContext(std::unique_ptr<vcl::pdf::PDFiumDocument>& pPdfDocument, sal_Int32 nPageIndex)
: mpPdfDocument(pPdfDocument)
, mnPageIndex(nPageIndex)
, mnCurrentIndex(-1)
{
}
~SearchContext()
{
if (mpSearchHandle)
mpSearchHandle.reset();
if (mpTextPage)
mpTextPage.reset();
if (mpPage)
mpPage.reset();
}
basegfx::B2DSize getPageSize()
{
basegfx::B2DSize aSize;
if (!mpPdfDocument)
return aSize;
basegfx::B2DSize aPDFSize = mpPdfDocument->getPageSize(mnPageIndex);
aSize = basegfx::B2DSize(convertPointToMm100(aPDFSize.getWidth()),
convertPointToMm100(aPDFSize.getHeight()));
return aSize;
}
bool initialize(OUString const& rSearchString, VectorGraphicSearchOptions const& rOptions)
{
if (!mpPdfDocument)
return false;
if (rSearchString == maSearchString)
return true;
if (mpSearchHandle)
mpSearchHandle.reset();
if (mpTextPage)
mpTextPage.reset();
if (mpPage)
mpPage.reset();
maSearchString = rSearchString;
maOptions = rOptions;
mpPage = mpPdfDocument->openPage(mnPageIndex);
if (!mpPage)
return false;
mpTextPage = mpPage->getTextPage();
if (!mpTextPage)
return false;
// Index where to start to search. -1 => at the end
int nStartIndex = maOptions.meStartPosition == SearchStartPosition::End ? -1 : 0;
if (mnCurrentIndex >= 0)
nStartIndex = mnCurrentIndex;
// vcl::pdf::PDFFindFlags::MatchCase, vcl::pdf::PDFFindFlags::MatchWholeWord, vcl::pdf::PDFFindFlags::Consecutive
// vcl::pdf::PDFFindFlags::MatchCase - If not set, it will not match case by default.
// vcl::pdf::PDFFindFlags::MatchWholeWord - If not set, it will not match the whole word by default.
// vcl::pdf::PDFFindFlags::Consecutive - If not set, it will skip past the current match to look for the next match.
vcl::pdf::PDFFindFlags nSearchFlags{};
if (maOptions.mbMatchCase)
nSearchFlags |= vcl::pdf::PDFFindFlags::MatchCase;
if (maOptions.mbMatchWholeWord)
nSearchFlags |= vcl::pdf::PDFFindFlags::MatchWholeWord;
mpSearchHandle = mpTextPage->findStart(maSearchString, nSearchFlags, nStartIndex);
return mpSearchHandle != nullptr;
}
bool next()
{
if (mpSearchHandle && mpSearchHandle->findNext())
{
mnCurrentIndex = index();
return true;
}
return false;
}
bool previous()
{
if (mpSearchHandle && mpSearchHandle->findPrev())
{
mnCurrentIndex = index();
return true;
}
return false;
}
int index()
{
if (mpSearchHandle)
return mpSearchHandle->getSearchResultIndex();
return -1;
}
int size()
{
if (mpSearchHandle)
return mpSearchHandle->getSearchCount();
return -1;
}
std::vector<basegfx::B2DRectangle> getTextRectangles()
{
std::vector<basegfx::B2DRectangle> aRectangles;
if (!mpTextPage || !mpSearchHandle)
return aRectangles;
int nIndex = index();
if (nIndex < 0)
return aRectangles;
int nSize = size();
if (nSize <= 0)
return aRectangles;
double fPageHeight = getPageSize().getHeight();
for (int nCount = 0; nCount < nSize; nCount++)
{
basegfx::B2DRectangle aRectangle = mpTextPage->getCharBox(nIndex + nCount, fPageHeight);
if (!aRectangle.isEmpty())
{
aRectangles.push_back(aRectangle);
}
}
return aRectangles;
}
};
} // end anonymous namespace
class VectorGraphicSearch::Implementation
{
public:
std::shared_ptr<vcl::pdf::PDFium> mpPDFium;
std::unique_ptr<vcl::pdf::PDFiumDocument> mpPdfDocument;
std::unique_ptr<SearchContext> mpSearchContext;
Implementation()
: mpPDFium(vcl::pdf::PDFiumLibrary::get())
{
}
~Implementation() { mpSearchContext.reset(); }
};
VectorGraphicSearch::VectorGraphicSearch(Graphic aGraphic)
: mpImplementation(std::make_unique<VectorGraphicSearch::Implementation>())
, maGraphic(std::move(aGraphic))
{
}
VectorGraphicSearch::~VectorGraphicSearch() { mpImplementation.reset(); }
bool VectorGraphicSearch::search(OUString const& rSearchString,
VectorGraphicSearchOptions const& rOptions)
{
if (!mpImplementation->mpPDFium)
{
return false;
}
if (!mpImplementation->mpSearchContext)
{
auto pData = maGraphic.getVectorGraphicData();
if (pData && pData->getType() == VectorGraphicDataType::Pdf)
{
if (searchPDF(pData))
{
return mpImplementation->mpSearchContext->initialize(rSearchString, rOptions);
}
}
return false;
}
return mpImplementation->mpSearchContext->initialize(rSearchString, rOptions);
}
bool VectorGraphicSearch::searchPDF(std::shared_ptr<VectorGraphicData> const& rData)
{
if (!mpImplementation->mpPDFium)
{
return false;
}
mpImplementation->mpPdfDocument = mpImplementation->mpPDFium->openDocument(
rData->getBinaryDataContainer().getData(), rData->getBinaryDataContainer().getSize(),
OString());
if (!mpImplementation->mpPdfDocument)
{
//TODO: Handle failure to load.
switch (mpImplementation->mpPDFium->getLastErrorCode())
{
case vcl::pdf::PDFErrorType::Success:
break;
case vcl::pdf::PDFErrorType::Unknown:
break;
case vcl::pdf::PDFErrorType::File:
break;
case vcl::pdf::PDFErrorType::Format:
break;
case vcl::pdf::PDFErrorType::Password:
break;
case vcl::pdf::PDFErrorType::Security:
break;
case vcl::pdf::PDFErrorType::Page:
break;
default:
break;
}
return false;
}
sal_Int32 nPageIndex = std::max(rData->getPageIndex(), sal_Int32(0));
mpImplementation->mpSearchContext.reset(
new SearchContext(mpImplementation->mpPdfDocument, nPageIndex));
return true;
}
basegfx::B2DSize VectorGraphicSearch::pageSize()
{
basegfx::B2DSize aSize;
if (mpImplementation->mpSearchContext)
aSize = mpImplementation->mpSearchContext->getPageSize();
return aSize;
}
bool VectorGraphicSearch::next()
{
if (mpImplementation->mpSearchContext)
return mpImplementation->mpSearchContext->next();
return false;
}
bool VectorGraphicSearch::previous()
{
if (mpImplementation->mpSearchContext)
return mpImplementation->mpSearchContext->previous();
return false;
}
int VectorGraphicSearch::index()
{
if (mpImplementation->mpSearchContext)
return mpImplementation->mpSearchContext->index();
return -1;
}
std::vector<basegfx::B2DRectangle> VectorGraphicSearch::getTextRectangles()
{
if (mpImplementation->mpSearchContext)
return mpImplementation->mpSearchContext->getTextRectangles();
return std::vector<basegfx::B2DRectangle>();
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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