src/extension/internal/pdf-input-cairo.cpp

   1  /*
   2  * Simple PDF import extension using libpoppler and Cairo's SVG surface.
   3  *
   4  * Authors:
   5  *   miklos erdelyi
   6  *   Abhishek Sharma
   7  *
   8  * Copyright (C) 2007 Authors
   9  *
  10  * Released under GNU GPL, read the file 'COPYING' for more information
  11  *
  12  */
  13
  14 #ifdef HAVE_CONFIG_H
  15 # include <config.h>
  16 #endif
  17
  18 #ifdef HAVE_POPPLER_GLIB
  19
  20 #include "pdf-input-cairo.h"
  21 #include "extension/system.h"
  22 #include "extension/input.h"
  23 #include "document.h"
  24
  25 #include <cairo-svg.h>
  26 #include <poppler/glib/poppler.h>
  27 #include <poppler/glib/poppler-document.h>
  28 #include <poppler/glib/poppler-page.h>
  29
  30 namespace Inkscape {
  31 namespace Extension {
  32 namespace Internal {
  33
  34 static cairo_status_t _write_ustring_cb(void *closure, const unsigned char *data, unsigned int length);
  35
  36 SPDocument *
  37 PdfInputCairo::open(Inkscape::Extension::Input * /*mod*/, const gchar * uri) {
  38
  39     printf("Attempting to open using PdfInputCairo\n");
  40
  41     gchar* filename_uri = g_filename_to_uri(uri, NULL, NULL);
  42
  43     PopplerDocument* document = poppler_document_new_from_file(filename_uri, NULL, NULL);
  44     if (document == NULL)
  45         return NULL;
  46
  47     double width, height;
  48     PopplerPage* page = poppler_document_get_page(document, 0);
  49     poppler_page_get_size(page, &width, &height);
  50
  51     Glib::ustring* output = new Glib::ustring("");
  52     cairo_surface_t* surface = cairo_svg_surface_create_for_stream(Inkscape::Extension::Internal::_write_ustring_cb,
  53                                                                    output, width, height);
  54     cairo_t* cr = cairo_create(surface);
  55
  56     poppler_page_render(page, cr);
  57     cairo_show_page(cr);
  58
  59     cairo_destroy(cr);
  60     cairo_surface_destroy(surface);
  61
  62     SPDocument * doc = SPDocument::createNewDocFromMem(output->c_str(), output->length(), TRUE);
  63
  64     delete output;
  65     g_object_unref(page);
  66     g_object_unref(document);
  67
  68     return doc;
  69 }
  70
  71 static cairo_status_t
  72         _write_ustring_cb(void *closure, const unsigned char *data, unsigned int length)
  73 {
  74     Glib::ustring* stream = (Glib::ustring*)closure;
  75     stream->append((const char*)data, length);
  76
  77     return CAIRO_STATUS_SUCCESS;
  78 }
  79
  80
  81 #include "clear-n_.h"
  82
  83 void
  84 PdfInputCairo::init(void) {
  85     Inkscape::Extension::Extension * ext;
  86
  87     ext = Inkscape::Extension::build_from_mem(
  88         "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
  89             "<name>PDF Input</name>\n"
  90             "<id>org.inkscape.input.cairo-pdf</id>\n"
  91             "<input>\n"
  92                 "<extension>.pdf</extension>\n"
  93                 "<mimetype>application/pdf</mimetype>\n"
  94                 "<filetypename>Adobe PDF via poppler-cairo (*.pdf)</filetypename>\n"
  95                 "<filetypetooltip>PDF Document</filetypetooltip>\n"
  96             "</input>\n"
  97         "</inkscape-extension>", new PdfInputCairo());
  98 } // init
  99
 100 } } }  /* namespace Inkscape, Extension, Implementation */
 101
 102 #endif /* HAVE_POPPLER_GLIB */
 103
 104 /*
 105   Local Variables:
 106   mode:c++
 107   c-file-style:"stroustrup"
 108   c-file-offsets:((innamespace . 0)(inline-open . 0))
 109   indent-tabs-mode:nil
 110   fill-column:99
 111   End:
 112 */
 113 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :