Initial commit.

Resources/InsaneWidget/PixelToPdfWriter.cpp

@@ -0,0 +1,83 @@
+/*
+* File:   PixelToPdfWriter.cpp
+* Author: Saleem Edah-Tally - nmset@yandex.com
+* License : CeCILL-C
+* Copyright Saleem Edah-Tally - © 2025
+*
+* Created on 14 06 2025, 17:15
+*/
+
+#include "PixelToPdfWriter.h"
+#include <iostream>
+#include <memory>
+
+using namespace std;
+using namespace PoDoFo;
+
+PixelToPdfWriter::PixelToPdfWriter()
+{
+  m_pageSizes["A0"] = PoDoFo::PdfPageSize::A0;
+  m_pageSizes["A1"] = PoDoFo::PdfPageSize::A1;
+  m_pageSizes["A2"] = PoDoFo::PdfPageSize::A2;
+  m_pageSizes["A3"] = PoDoFo::PdfPageSize::A3;
+  m_pageSizes["A4"] = PoDoFo::PdfPageSize::A4;
+  m_pageSizes["A5"] = PoDoFo::PdfPageSize::A5;
+  m_pageSizes["A6"] = PoDoFo::PdfPageSize::A6;
+  m_pageSizes["Letter"] = PoDoFo::PdfPageSize::Letter;
+  m_pageSizes["Legal"] = PoDoFo::PdfPageSize::Legal;
+  m_pageSizes["Tabloid"] = PoDoFo::PdfPageSize::Tabloid;
+}
+
+
+bool PixelToPdfWriter::AddPageAt(const std::string& pixelFile, uint width, uint height, uint index, 
+                               PoDoFo::PdfPageSize pageSize, PoDoFo::PdfColorSpace)
+{
+  try
+  {
+    Rect pageRect = PdfPage::CreateStandardPageSize(pageSize);
+    PdfPage& page = m_doc.GetPages().CreatePageAt(index, pageRect);
+
+    PdfImageInfo info;
+    info.Width = width; // Must be known beforehand and must be exact.
+    info.Height = height;
+    info.BitsPerComponent = 8;
+    info.ColorSpace = PdfColorSpace::DeviceRGB; // Is always RGB from libinsane.
+
+    ifstream ifs(pixelFile, ios::binary);
+    string content;
+    content.assign(istreambuf_iterator<char>(ifs), istreambuf_iterator<char>());
+    bufferview bv(content);
+
+    const uint pageNumber = m_doc.GetPages().GetCount();
+    std::unique_ptr<PdfImage> image =  m_doc.CreateImage("Page_" + to_string(pageNumber)); // No space.
+    image->SetDataRaw(bv, info); // OK for pixel file, including LineArt
+    double scale = std::min(pageRect.Width / image->GetWidth(), pageRect.Height / image->GetHeight());
+
+    PdfPainter painter;
+    painter.SetCanvas(page);
+    painter.DrawImage(*(image), 0.0, 0.0, scale, scale);
+    painter.FinishDrawing();
+  }
+  catch (PdfError& e)
+  {
+    cerr << e.ErrorMessage(e.GetCode()) << endl << e.what() << endl;
+    return false;
+  }
+  
+  return true;
+}
+
+void PixelToPdfWriter::Save(const std::string& pdfFile)
+{
+  m_doc.Save(pdfFile);
+}
+
+uint PixelToPdfWriter::GetNumberOfPages() const
+{
+  return m_doc.GetPages().GetCount();
+}
+
+void PixelToPdfWriter::RemovePageAt(uint index)
+{
+  m_doc.GetPages().RemovePageAt(index);
+}