1 files changed, 107 insertions, 0 deletions
diff --git a/include/vcl/pdfread.hxx b/include/vcl/pdfread.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * 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/.
+ */
+
+#ifndef INCLUDED_VCL_SOURCE_FILTER_IPDF_PDFREAD_HXX
+#define INCLUDED_VCL_SOURCE_FILTER_IPDF_PDFREAD_HXX
+
+#include <vector>
+#include <tools/gen.hxx>
+#include <tools/stream.hxx>
+#include <tools/color.hxx>
+#include <vcl/graph.hxx>
+#include <basegfx/range/b2drectangle.hxx>
+#include <com/sun/star/util/DateTime.hpp>
+
+#include <vcl/pdf/PDFAnnotationSubType.hxx>
+#include <vcl/pdf/PDFAnnotationMarker.hxx>
+
+namespace com::sun::star::uno
+{
+template <typename> class Sequence;
+}
+class Bitmap;
+
+namespace vcl
+{
+/// Fills the rBitmaps vector with rendered pages.
+VCL_DLLPUBLIC size_t RenderPDFBitmaps(const void* pBuffer, int nSize,
+                                      std::vector<BitmapEx>& rBitmaps, size_t nFirstPage = 0,
+                                      int nPages = 1, const basegfx::B2DTuple* pSizeHint = nullptr);
+
+/// Imports a PDF stream as a VectorGraphicData.
+VCL_DLLPUBLIC bool
+importPdfVectorGraphicData(SvStream& rStream,
+                           std::shared_ptr<VectorGraphicData>& rVectorGraphicData);
+
+/// Imports a PDF stream into rGraphic.
+VCL_DLLPUBLIC bool ImportPDF(SvStream& rStream, Graphic& rGraphic);
+
+// When inserting a PDF file as an image or pasting PDF data from the clipboard, at least on a
+// Retina iMac, the resulting rendered image does not look sharp without this surprisingly large
+// extra scaling factor. Exact reasons unknown. And it isn't enough to have it be just 2 (which is
+// the actual Retina factor on my iMac). Possibly the fuzziness is related to what Pdfium uses to
+// render text.
+
+// Also, look at CountDPIScaleFactor() in vcl/source/window/window.cxx. The GetDPIScaleFactor() API
+// lies on macOS even more than it does on other platforms, it claims that the DPI scale factor is
+// always 1. But in fact most Macs nowadays have a HiDPI ("Retina") display. But we can't just "fix"
+// things by making GetDPIScaleFactor() always return 2 on macOS, even if that wouldn't be any more
+// wrong, because that then causes other regressions that I have no time to look into now.
+
+#ifdef MACOSX
+constexpr int PDF_INSERT_MAGIC_SCALE_FACTOR = 8;
+#else
+constexpr int PDF_INSERT_MAGIC_SCALE_FACTOR = 1;
+#endif
+
+struct PDFGraphicAnnotation
+{
+    OUString maAuthor;
+    OUString maText;
+
+    basegfx::B2DRectangle maRectangle; // In HMM
+    css::util::DateTime maDateTime;
+
+    Color maColor;
+
+    pdf::PDFAnnotationSubType meSubType;
+    std::shared_ptr<pdf::PDFAnnotationMarker> mpMarker;
+};
+
+class PDFGraphicResult
+{
+    Graphic maGraphic;
+    // Size in HMM
+    Size maSize;
+
+    std::vector<PDFGraphicAnnotation> maAnnotations;
+
+public:
+    PDFGraphicResult(Graphic aGraphic, Size const& rSize,
+                     std::vector<PDFGraphicAnnotation> aAnnotations)
+        : maGraphic(std::move(aGraphic))
+        , maSize(rSize)
+        , maAnnotations(std::move(aAnnotations))
+    {
+    }
+
+    const Graphic& GetGraphic() const { return maGraphic; }
+    const Size& GetSize() const { return maSize; }
+    const std::vector<PDFGraphicAnnotation>& GetAnnotations() const { return maAnnotations; }
+};
+
+/// Import PDF as Graphic images (1 per page), but not loaded yet.
+/// Returns the number of pages read.
+VCL_DLLPUBLIC size_t ImportPDFUnloaded(const OUString& rURL,
+                                       std::vector<PDFGraphicResult>& rGraphics);
+}
+
+#endif // INCLUDED_VCL_SOURCE_FILTER_IPDF_PDFREAD_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */