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Tools - ink info and ink coverage - basics

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Jakub Melka
2021-07-02 18:01:33 +02:00
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PdfTool/pdftoolinkcoverage.cpp Normal file
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// Copyright (C) 2021 Jakub Melka
//
// This file is part of Pdf4Qt.
//
// Pdf4Qt is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// with the written consent of the copyright owner, any later version.
//
// Pdf4Qt is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with Pdf4Qt. If not, see <https://www.gnu.org/licenses/>.
#include "pdftoolinkcoverage.h"
#include "pdftransparencyrenderer.h"
namespace pdftool
{
static PDFToolInkCoverageApplication s_toolInkCoverageApplication;
QString PDFToolInkCoverageApplication::getStandardString(PDFToolAbstractApplication::StandardString standardString) const
{
switch (standardString)
{
case Command:
return "ink-coverage";
case Name:
return PDFToolTranslationContext::tr("Ink coverage");
case Description:
return PDFToolTranslationContext::tr("Calculate ink coverage of the selected pages, or a whole document.");
default:
Q_ASSERT(false);
break;
}
return QString();
}
int PDFToolInkCoverageApplication::execute(const PDFToolOptions& options)
{
pdf::PDFDocument document;
QByteArray sourceData;
if (!readDocument(options, document, &sourceData, false))
{
return ErrorDocumentReading;
}
QString parseError;
std::vector<pdf::PDFInteger> pageIndices = options.getPageRange(document.getCatalog()->getPageCount(), parseError, true);
if (!parseError.isEmpty() || pageIndices.empty())
{
PDFConsole::writeError(parseError, options.outputCodec);
return ErrorInvalidArguments;
}
// We are ready to calculate the document's ink coverage
pdf::PDFOptionalContentActivity optionalContentActivity(&document, pdf::OCUsage::Print, nullptr);
pdf::PDFCMSManager cmsManager(nullptr);
cmsManager.setDocument(&document);
cmsManager.setSettings(options.cmsSettings);
pdf::PDFFontCache fontCache(pdf::DEFAULT_FONT_CACHE_LIMIT, pdf::DEFAULT_REALIZED_FONT_CACHE_LIMIT);
pdf::PDFModifiedDocument md(&document, &optionalContentActivity);
fontCache.setDocument(md);
fontCache.setCacheShrinkEnabled(nullptr, false);
pdf::PDFInkMapper inkMapper(&cmsManager, &document);
inkMapper.createSpotColors(true);
pdf::PDFInkCoverageCalculator calculator(&document,
&fontCache,
&cmsManager,
&optionalContentActivity,
&inkMapper,
nullptr,
pdf::PDFTransparencyRendererSettings());
calculator.perform(QSize(1920, 1920), pageIndices);
fontCache.setCacheShrinkEnabled(nullptr, true);
PDFOutputFormatter formatter(options.outputStyle, options.outputCodec);
formatter.beginDocument("ink-coverage", PDFToolTranslationContext::tr("Ink Coverage"));
formatter.endl();
formatter.beginTable("ink-coverage-by-page", PDFToolTranslationContext::tr("Ink Coverage by Page"));
bool isHeaderProcessed = false;
std::vector<pdf::PDFInkCoverageCalculator::InkCoverageChannelInfo> headerCoverage;
for (const pdf::PDFInteger pageIndex : pageIndices)
{
const std::vector<pdf::PDFInkCoverageCalculator::InkCoverageChannelInfo>* coverage = calculator.getInkCoverage(pageIndex);
if (!coverage)
{
// Jakub Melka: Something bad happened?
continue;
}
if (!isHeaderProcessed)
{
formatter.beginTableHeaderRow("header");
formatter.writeTableHeaderColumn("page-no", PDFToolTranslationContext::tr("Page No."), Qt::AlignLeft);
for (const pdf::PDFInkCoverageCalculator::InkCoverageChannelInfo& info : *coverage)
{
formatter.writeTableHeaderColumn(QString("%1-ratio").arg(QString::fromLatin1(info.name)), PDFToolTranslationContext::tr("%1 Ratio [%]").arg(info.textName), Qt::AlignLeft);
formatter.writeTableHeaderColumn(QString("%1-area").arg(QString::fromLatin1(info.name)), PDFToolTranslationContext::tr("%1 Covered [mm^2]").arg(info.textName), Qt::AlignLeft);
}
headerCoverage = *coverage;
formatter.endTableHeaderRow();
isHeaderProcessed = true;
}
for (const auto& info : *headerCoverage)
{
pdf::PDFInkCoverageCalculator::InkCoverageChannelInfo* channelInfo = pdf::PDFInkCoverageCalculator::findCoverageInfoByName(*coverage, info.name);
pdf::PDFInkCoverageCalculator::InkCoverageChannelInfo* sumChannelInfo = pdf::PDFInkCoverageCalculator::findCoverageInfoByName(headerCoverage, info.name);
if (sumChannelInfo && channelInfo)
{
sumChannelInfo->coveredArea += channelInfo->coveredArea;
}
}
}
formatter.endTable();
formatter.endDocument();
PDFConsole::writeText(formatter.getString(), options.outputCodec);
return ExitSuccess;
}
PDFToolAbstractApplication::Options PDFToolInkCoverageApplication::getOptionsFlags() const
{
return ConsoleFormat | OpenDocument | PageSelector | ColorManagementSystem;
}
} // namespace pdftool