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