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Developing txt renderer

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but UB
This commit is contained in:
Alexey Nagaev
2025-09-15 19:44:38 +03:00
parent deb5b75e1f
commit 26adb8d565
4 changed files with 14 additions and 23 deletions
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2
DocxRenderer/test/TextCommandRenderer/TextCommandRenderer.cpp
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@ -94,7 +94,7 @@ private:
const std::wstring m_wsBaseSep = L"/";
size_t m_nCurrColorIndex = 0;
const std::array<long, 20> m_arColors = {
const std::array<unsigned long, 20> m_arColors = {
0xFF400000, // Deep Red
0xFF800000, // Dark Red
0xFFFF0000, // Pure Red

24
TxtFile/Source/TxtRenderer.cpp
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@ -96,17 +96,6 @@ private:
return true;
}
};
struct CBaseFontInfo
{
std::wstring wsPath;
int nFaceIndex;
double dSize;
std::wstring ToString() const
{
return wsPath + std::to_wstring(nFaceIndex) + std::to_wstring(dSize);
}
};
std::unique_ptr<NSFonts::IFontManager> m_pManager{nullptr}; // for space width and sym height
std::vector<std::shared_ptr<CTextLine>> m_arCurrPageTextLines{};
std::vector<std::wstring> m_arTxtData{};
@ -128,15 +117,16 @@ void CTxtRenderer::CTxtRendererImpl::EndCommand(const DWORD& lType)
{
if (lType == c_nPageType)
{
for (auto&& line : m_arCurrPageTextLines)
for (auto& line : m_arCurrPageTextLines)
if (!line->IsOnlySpaces())
m_arTxtData.push_back(std::move(line->wsData));
m_arTxtData.push_back(L" ");
m_arCurrPageTextLines.clear();
}
}
void CTxtRenderer::CTxtRendererImpl::NewPage()
{
m_oFont.SetDefaultParams();
m_oTransform.Reset();
m_arCurrPageTextLines.clear();
m_pCurrLine = nullptr;
}
@ -175,10 +165,9 @@ void CTxtRenderer::CTxtRendererImpl::AddText(const unsigned int* pUnicodes, unsi
double h = c_dPtToMM * (line_height * m_oFont.Size) / em_height;
b = t + h;
double space_width;
CBaseFontInfo base_font_info {m_oFont.Path, m_oFont.FaceIndex, m_oFont.Size};
std::wstring base_font_info_key = base_font_info.ToString();
double space_width = 0;
// TODO pGIds
m_pManager->LoadString2(L" ", 0, 0);
TBBox bbox = m_pManager->MeasureString2();
space_width = (double)(bbox.fMaxX - bbox.fMinX) * c_dPixToMM;
@ -194,7 +183,7 @@ void CTxtRenderer::CTxtRendererImpl::AddText(const unsigned int* pUnicodes, unsi
const double split_distance = space_width * c_dSPLIT_WIDTH_COEF;
const double space_distance = space_width * c_dSPACE_WIDTH_COEF;
std::wstring new_text = text_utf32.ToStdWString();
if (m_pCurrLine != nullptr && fabs(m_pCurrLine->dBot - b) < h * c_dY_PRECISION_COEF)
if (m_pCurrLine != nullptr && fabs(m_pCurrLine->dBot - b) < c_dY_PRECISION_MM)
{
// some_text+more_text
if (fabs(m_pCurrLine->dRight - l) < split_distance && r > m_pCurrLine->dRight)
@ -218,7 +207,6 @@ void CTxtRenderer::CTxtRendererImpl::AddText(const unsigned int* pUnicodes, unsi
}
else
{
if (m_pCurrLine) m_pCurrLine->wsData.shrink_to_fit();
m_pCurrLine = std::make_shared<CTextLine>();
m_pCurrLine->dTop = t;
m_pCurrLine->dBot = b;

2
TxtFile/Source/TxtRenderer.h
View File

@ -40,7 +40,7 @@ constexpr double c_dMMToPix = 72.0 / 25.4;
constexpr double c_dPixToMM = 25.4 / 72.0;
constexpr double c_dMMToPt = 72.0 / 25.4;
constexpr double c_dPtToMM = 25.4 / 72.0;
constexpr double c_dY_PRECISION_COEF = 1;
constexpr double c_dY_PRECISION_MM = 0.02;
constexpr double c_dSPACE_WIDTH_COEF = 0.4;
constexpr double c_dSPLIT_WIDTH_COEF = 2.0;

9
TxtFile/Source/TxtRendererTest/main.cpp
View File

@ -66,7 +66,6 @@ int main(int argc, char* argv[])
std::vector<std::wstring> source_files = NSDirectory::GetFiles(L"");
//source_files.push_back(L"");
time_t start = time(0);
for (const auto& souce_file : source_files)
{
std::unique_ptr<CPdfFile> pdf_reader(new CPdfFile(fonts));
@ -80,10 +79,14 @@ int main(int argc, char* argv[])
std::wstring txt_file = output_dir + L"/" + filename + L".txt";
CTxtRenderer txt_renderer(fonts);
time_t start = time(0);
txt_renderer.Convert(pdf_reader.get(), txt_file);
time_t end = time(0);
std::cout << U_TO_UTF8(filename_with_ext) << " " << end - start << " sec" << std::endl;
}
time_t end = time(0);
std::cout << end - start << " sec" << std::endl;
fonts->Release();
return 0;