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DocDiff application: page added/removed

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This commit is contained in:
Jakub Melka 2021-09-23 21:02:56 +02:00
parent c00939f536
commit c8c42ccaf0
2 changed files with 97 additions and 8 deletions
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86
Pdf4QtLib/sources/pdfdiff.cpp
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@ -1,4 +1,4 @@
// Copyright (C) 2021 Jakub Melka // Copyright (C) 2021 Jakub Melka
// //
// This file is part of PDF4QT. // This file is part of PDF4QT.
// //
@ -464,6 +464,68 @@ void PDFDiff::performCompare(const std::vector<PDFDiffPageContext>& leftPrepared
const bool isAdded = flags.testFlag(AlgorithmLCS::Added); const bool isAdded = flags.testFlag(AlgorithmLCS::Added);
const bool isRemoved = flags.testFlag(AlgorithmLCS::Removed); const bool isRemoved = flags.testFlag(AlgorithmLCS::Removed);
const bool isReplaced = flags.testFlag(AlgorithmLCS::Replaced);
Q_ASSERT(isAdded || isRemoved || isReplaced);
// There are two cases. Some page content was replaced, or either
// page range was added, or page range was removed.
if (isReplaced)
{
for (auto it = range.first; it != range.second; ++i)
{
const AlgorithmLCS::SequenceItem& item = *it;
if (item.isReplaced())
{
const bool isTextComparedAsVectorGraphics = m_options.testFlag(CompareTextsAsVector);
const PDFDiffPageContext& leftPageContext = leftPreparedPages[item.index1];
const PDFDiffPageContext& rightPageContext = rightPreparedPages[item.index2];
auto pageLeft = m_leftDocument->getCatalog()->getPage(leftPageContext.pageIndex);
auto pageRight = m_rightDocument->getCatalog()->getPage(rightPageContext.pageIndex);
PDFReal epsilon = (calculateEpsilonForPage(pageLeft) + calculateEpsilonForPage(pageRight)) * 0.5;
PDFDiffHelper::Differences differences = PDFDiffHelper::calculateDifferences(leftPageContext.graphicPieces, rightPageContext.graphicPieces, epsilon);
for (const PDFDiffHelper::GraphicPieceInfo& info : differences.left)
{
/*
switch (info.type)
{
}*/
}
}
if (item.isAdded())
{
const PDFDiffPageContext& rightPageContext = rightPreparedPages[item.index2];
m_result.addPageAdded(rightPageContext.pageIndex);
}
if (item.isRemoved())
{
const PDFDiffPageContext& leftPageContext = leftPreparedPages[item.index1];
m_result.addPageRemoved(leftPageContext.pageIndex);
}
}
}
else
{
for (auto it = range.first; it != range.second; ++i)
{
const AlgorithmLCS::SequenceItem& item = *it;
Q_ASSERT(item.isAdded() || item.isRemoved());
if (item.isAdded())
{
m_result.addPageAdded(rightPreparedPages[item.index2].pageIndex);
}
if (item.isRemoved())
{
m_result.addPageRemoved(leftPreparedPages[item.index1].pageIndex);
}
}
}
} }
} }
@ -542,6 +604,28 @@ void PDFDiffResult::addPageMoved(PDFInteger pageIndex1, PDFInteger pageIndex2)
m_differences.emplace_back(std::move(difference)); m_differences.emplace_back(std::move(difference));
} }
void PDFDiffResult::addPageAdded(PDFInteger pageIndex)
{
Difference difference;
difference.type = Type::PageAdded;
difference.pageIndex2 = pageIndex;
difference.message = PDFDiff::tr("Page no. %1 was added.").arg(pageIndex + 1);
m_differences.emplace_back(std::move(difference));
}
void PDFDiffResult::addPageRemoved(PDFInteger pageIndex)
{
Difference difference;
difference.type = Type::PageMoved;
difference.pageIndex1 = pageIndex;
difference.message = PDFDiff::tr("Page no. %1 was removed.").arg(pageIndex + 1);
m_differences.emplace_back(std::move(difference));
}
PDFDiffHelper::Differences PDFDiffHelper::calculateDifferences(const GraphicPieceInfos& left, PDFDiffHelper::Differences PDFDiffHelper::calculateDifferences(const GraphicPieceInfos& left,
const GraphicPieceInfos& right, const GraphicPieceInfos& right,
PDFReal epsilon) PDFReal epsilon)

19
Pdf4QtLib/sources/pdfdiff.h
View File

@ -42,7 +42,9 @@ public:
enum class Type enum class Type
{ {
Invalid, Invalid,
PageMoved PageMoved,
PageAdded,
PageRemoved
}; };
struct Difference struct Difference
@ -59,6 +61,8 @@ public:
const PDFOperationResult& getResult() const { return m_result; } const PDFOperationResult& getResult() const { return m_result; }
void addPageMoved(PDFInteger pageIndex1, PDFInteger pageIndex2); void addPageMoved(PDFInteger pageIndex1, PDFInteger pageIndex2);
void addPageAdded(PDFInteger pageIndex);
void addPageRemoved(PDFInteger pageIndex);
private: private:
Differences m_differences; Differences m_differences;
@ -79,12 +83,13 @@ public:
enum Option enum Option
{ {
None = 0x0000, None = 0x0000,
Asynchronous = 0x0001, ///< Compare document asynchronously Asynchronous = 0x0001, ///< Compare document asynchronously
PC_Text = 0x0002, ///< Use text to compare pages (determine, which pages correspond to each other) PC_Text = 0x0002, ///< Use text to compare pages (determine, which pages correspond to each other)
PC_VectorGraphics = 0x0004, ///< Use vector graphics to compare pages (determine, which pages correspond to each other) PC_VectorGraphics = 0x0004, ///< Use vector graphics to compare pages (determine, which pages correspond to each other)
PC_Images = 0x0008, ///< Use images to compare pages (determine, which pages correspond to each other) PC_Images = 0x0008, ///< Use images to compare pages (determine, which pages correspond to each other)
PC_Mesh = 0x0010, ///< Use mesh to compare pages (determine, which pages correspond to each other) PC_Mesh = 0x0010, ///< Use mesh to compare pages (determine, which pages correspond to each other)
CompareTextsAsVector = 0x0020, ///< Compare texts as vector graphics
}; };
Q_DECLARE_FLAGS(Options, Option) Q_DECLARE_FLAGS(Options, Option)