pdf-input-cairo.cpp revision 0f0f026a553fd84ffaaa90a368f87a842ecfcdd5
/*
* Simple PDF import extension using libpoppler and Cairo's SVG surface.
*
* Authors:
* miklos erdelyi
* Abhishek Sharma
*
* Copyright (C) 2007 Authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#ifdef HAVE_POPPLER_GLIB
#ifdef HAVE_POPPLER_CAIRO
#include "pdf-input-cairo.h"
#include "extension/system.h"
#include "extension/input.h"
#include "dialogs/dialog-events.h"
#include "document.h"
#include "inkscape.h"
#include <cairo-svg.h>
#include <poppler/glib/poppler.h>
#include <poppler/glib/poppler-document.h>
#include <poppler/glib/poppler-page.h>
#include "ui/widget/spinbutton.h"
namespace Inkscape {
namespace Extension {
namespace Internal {
/**
* \brief The PDF import dialog
* FIXME: Probably this should be placed into src/ui/dialog
*/
static const gchar * crop_setting_choices[] = {
//TRANSLATORS: The following are document crop settings for PDF import
// more info: http://www.acrobatusers.com/tech_corners/javascript_corner/tips/2006/page_bounds/
N_("media box"),
N_("crop box"),
N_("trim box"),
N_("bleed box"),
N_("art box")
};
PdfImportCairoDialog::PdfImportCairoDialog(PopplerDocument *doc)
{
if(doc == NULL) {
// if there is no document, throw exception here
throw;
}
_poppler_doc = doc;
cancelbutton = Gtk::manage(new class Gtk::Button(Gtk::StockID("gtk-cancel")));
okbutton = Gtk::manage(new class Gtk::Button(Gtk::StockID("gtk-ok")));
_labelSelect = Gtk::manage(new class Gtk::Label(_("Select page:")));
// Page number
int num_pages = poppler_document_get_n_pages(_poppler_doc);
Gtk::Adjustment *_pageNumberSpin_adj = Gtk::manage(new class Gtk::Adjustment(1, 1, num_pages, 1, 10, 0));
_pageNumberSpin = Gtk::manage(new class Inkscape::UI::Widget::SpinButton(*_pageNumberSpin_adj, 1, 1));
_labelTotalPages = Gtk::manage(new class Gtk::Label());
hbox2 = Gtk::manage(new class Gtk::HBox(false, 0));
// Disable the page selector when there's only one page
if ( num_pages == 1 ) {
_pageNumberSpin->set_sensitive(false);
} else {
// Display total number of pages
gchar *label_text = g_strdup_printf(_("out of %i"), num_pages);
_labelTotalPages->set_label(label_text);
g_free(label_text);
}
// Crop settings
_cropCheck = Gtk::manage(new class Gtk::CheckButton(_("Clip to:")));
_cropTypeCombo = Gtk::manage(new class Gtk::ComboBoxText());
int num_crop_choices = sizeof(crop_setting_choices) / sizeof(crop_setting_choices[0]);
for ( int i = 0 ; i < num_crop_choices ; i++ ) {
_cropTypeCombo->append(_(crop_setting_choices[i]));
}
_cropTypeCombo->set_active_text(_(crop_setting_choices[0]));
_cropTypeCombo->set_sensitive(false);
hbox3 = Gtk::manage(new class Gtk::HBox(false, 4));
vbox2 = Gtk::manage(new class Gtk::VBox(false, 4));
alignment3 = Gtk::manage(new class Gtk::Alignment(0.5, 0.5, 1, 1));
_labelPageSettings = Gtk::manage(new class Gtk::Label(_("Page settings")));
_pageSettingsFrame = Gtk::manage(new class Gtk::Frame());
_labelPrecision = Gtk::manage(new class Gtk::Label(_("Precision of approximating gradient meshes:")));
_labelPrecisionWarning = Gtk::manage(new class Gtk::Label(_("<b>Note</b>: setting the precision too high may result in a large SVG file and slow performance.")));
_fallbackPrecisionSlider_adj = Gtk::manage(new class Gtk::Adjustment(2, 1, 256, 1, 10, 10));
_fallbackPrecisionSlider = Gtk::manage(new class Gtk::HScale(*_fallbackPrecisionSlider_adj));
_fallbackPrecisionSlider->set_value(2.0);
_labelPrecisionComment = Gtk::manage(new class Gtk::Label(_("rough")));
hbox6 = Gtk::manage(new class Gtk::HBox(false, 4));
// Text options
_labelText = Gtk::manage(new class Gtk::Label(_("Text handling:")));
_textHandlingCombo = Gtk::manage(new class Gtk::ComboBoxText());
_textHandlingCombo->append(_("Import text as text"));
_textHandlingCombo->set_active_text(_("Import text as text"));
_localFontsCheck = Gtk::manage(new class Gtk::CheckButton(_("Replace PDF fonts by closest-named installed fonts")));
hbox5 = Gtk::manage(new class Gtk::HBox(false, 4));
_embedImagesCheck = Gtk::manage(new class Gtk::CheckButton(_("Embed images")));
vbox3 = Gtk::manage(new class Gtk::VBox(false, 4));
alignment4 = Gtk::manage(new class Gtk::Alignment(0.5, 0.5, 1, 1));
_labelImportSettings = Gtk::manage(new class Gtk::Label(_("Import settings")));
_importSettingsFrame = Gtk::manage(new class Gtk::Frame());
vbox1 = Gtk::manage(new class Gtk::VBox(false, 4));
_previewArea = Gtk::manage(new class Gtk::DrawingArea());
hbox1 = Gtk::manage(new class Gtk::HBox(false, 4));
cancelbutton->set_can_focus();
cancelbutton->set_can_default();
cancelbutton->set_relief(Gtk::RELIEF_NORMAL);
okbutton->set_can_focus();
okbutton->set_can_default();
okbutton->set_relief(Gtk::RELIEF_NORMAL);
this->get_action_area()->property_layout_style().set_value(Gtk::BUTTONBOX_END);
_labelSelect->set_alignment(0.5,0.5);
_labelSelect->set_padding(4,0);
_labelSelect->set_justify(Gtk::JUSTIFY_LEFT);
_labelSelect->set_line_wrap(false);
_labelSelect->set_use_markup(false);
_labelSelect->set_selectable(false);
_pageNumberSpin->set_can_focus();
_pageNumberSpin->set_update_policy(Gtk::UPDATE_ALWAYS);
_pageNumberSpin->set_numeric(true);
_pageNumberSpin->set_digits(0);
_pageNumberSpin->set_wrap(false);
_labelTotalPages->set_alignment(0.5,0.5);
_labelTotalPages->set_padding(4,0);
_labelTotalPages->set_justify(Gtk::JUSTIFY_LEFT);
_labelTotalPages->set_line_wrap(false);
_labelTotalPages->set_use_markup(false);
_labelTotalPages->set_selectable(false);
hbox2->pack_start(*_labelSelect, Gtk::PACK_SHRINK, 4);
hbox2->pack_start(*_pageNumberSpin, Gtk::PACK_SHRINK, 4);
hbox2->pack_start(*_labelTotalPages, Gtk::PACK_SHRINK, 4);
_cropCheck->set_can_focus();
_cropCheck->set_relief(Gtk::RELIEF_NORMAL);
_cropCheck->set_mode(true);
_cropCheck->set_active(false);
_cropTypeCombo->set_border_width(1);
hbox3->pack_start(*_cropCheck, Gtk::PACK_SHRINK, 4);
hbox3->pack_start(*_cropTypeCombo, Gtk::PACK_SHRINK, 0);
vbox2->pack_start(*hbox2);
vbox2->pack_start(*hbox3);
alignment3->add(*vbox2);
_labelPageSettings->set_alignment(0.5,0.5);
_labelPageSettings->set_padding(4,0);
_labelPageSettings->set_justify(Gtk::JUSTIFY_LEFT);
_labelPageSettings->set_line_wrap(false);
_labelPageSettings->set_use_markup(true);
_labelPageSettings->set_selectable(false);
_pageSettingsFrame->set_border_width(4);
_pageSettingsFrame->set_shadow_type(Gtk::SHADOW_ETCHED_IN);
_pageSettingsFrame->set_label_align(0,0.5);
_pageSettingsFrame->add(*alignment3);
_pageSettingsFrame->set_label_widget(*_labelPageSettings);
_labelPrecision->set_alignment(0,0.5);
_labelPrecision->set_padding(4,0);
_labelPrecision->set_justify(Gtk::JUSTIFY_LEFT);
_labelPrecision->set_line_wrap(true);
_labelPrecision->set_use_markup(false);
_labelPrecision->set_selectable(false);
_labelPrecisionWarning->set_alignment(0,0.5);
_labelPrecisionWarning->set_padding(4,0);
_labelPrecisionWarning->set_justify(Gtk::JUSTIFY_LEFT);
_labelPrecisionWarning->set_line_wrap(true);
_labelPrecisionWarning->set_use_markup(true);
_labelPrecisionWarning->set_selectable(false);
_fallbackPrecisionSlider->set_size_request(180,-1);
_fallbackPrecisionSlider->set_can_focus();
_fallbackPrecisionSlider->set_inverted(false);
_fallbackPrecisionSlider->set_digits(1);
_fallbackPrecisionSlider->set_draw_value(true);
_fallbackPrecisionSlider->set_value_pos(Gtk::POS_TOP);
_labelPrecisionComment->set_size_request(90,-1);
_labelPrecisionComment->set_alignment(0.5,0.5);
_labelPrecisionComment->set_padding(4,0);
_labelPrecisionComment->set_justify(Gtk::JUSTIFY_LEFT);
_labelPrecisionComment->set_line_wrap(false);
_labelPrecisionComment->set_use_markup(false);
_labelPrecisionComment->set_selectable(false);
hbox6->pack_start(*_fallbackPrecisionSlider, Gtk::PACK_SHRINK, 4);
hbox6->pack_start(*_labelPrecisionComment, Gtk::PACK_SHRINK, 0);
_labelText->set_alignment(0.5,0.5);
_labelText->set_padding(4,0);
_labelText->set_justify(Gtk::JUSTIFY_LEFT);
_labelText->set_line_wrap(false);
_labelText->set_use_markup(false);
_labelText->set_selectable(false);
hbox5->pack_start(*_labelText, Gtk::PACK_SHRINK, 0);
hbox5->pack_start(*_textHandlingCombo, Gtk::PACK_SHRINK, 0);
_localFontsCheck->set_can_focus();
_localFontsCheck->set_relief(Gtk::RELIEF_NORMAL);
_localFontsCheck->set_mode(true);
_localFontsCheck->set_active(true);
_embedImagesCheck->set_can_focus();
_embedImagesCheck->set_relief(Gtk::RELIEF_NORMAL);
_embedImagesCheck->set_mode(true);
_embedImagesCheck->set_active(true);
vbox3->pack_start(*_labelPrecision, Gtk::PACK_SHRINK, 0);
vbox3->pack_start(*hbox6, Gtk::PACK_SHRINK, 0);
vbox3->pack_start(*_labelPrecisionWarning, Gtk::PACK_SHRINK, 0);
vbox3->pack_start(*hbox5, Gtk::PACK_SHRINK, 4);
vbox3->pack_start(*_localFontsCheck, Gtk::PACK_SHRINK, 0);
vbox3->pack_start(*_embedImagesCheck, Gtk::PACK_SHRINK, 0);
alignment4->add(*vbox3);
_labelImportSettings->set_alignment(0.5,0.5);
_labelImportSettings->set_padding(4,0);
_labelImportSettings->set_justify(Gtk::JUSTIFY_LEFT);
_labelImportSettings->set_line_wrap(false);
_labelImportSettings->set_use_markup(true);
_labelImportSettings->set_selectable(false);
_importSettingsFrame->set_border_width(4);
_importSettingsFrame->set_shadow_type(Gtk::SHADOW_ETCHED_IN);
_importSettingsFrame->set_label_align(0,0.5);
_importSettingsFrame->add(*alignment4);
_importSettingsFrame->set_label_widget(*_labelImportSettings);
vbox1->pack_start(*_pageSettingsFrame, Gtk::PACK_EXPAND_PADDING, 0);
vbox1->pack_start(*_importSettingsFrame, Gtk::PACK_EXPAND_PADDING, 0);
hbox1->pack_start(*vbox1);
hbox1->pack_start(*_previewArea, Gtk::PACK_EXPAND_WIDGET, 4);
this->get_vbox()->set_homogeneous(false);
this->get_vbox()->set_spacing(0);
this->get_vbox()->pack_start(*hbox1);
this->set_title(_("PDF Import Settings"));
this->set_modal(true);
sp_transientize((GtkWidget *)this->gobj()); //Make transient
this->property_window_position().set_value(Gtk::WIN_POS_NONE);
this->set_resizable(true);
this->property_destroy_with_parent().set_value(false);
this->set_has_separator(true);
this->add_action_widget(*cancelbutton, -6);
this->add_action_widget(*okbutton, -5);
cancelbutton->show();
okbutton->show();
_labelSelect->show();
_pageNumberSpin->show();
_labelTotalPages->show();
hbox2->show();
_cropCheck->show();
_cropTypeCombo->show();
hbox3->show();
vbox2->show();
alignment3->show();
_labelPageSettings->show();
_pageSettingsFrame->show();
_labelPrecision->show();
_labelPrecisionWarning->show();
_fallbackPrecisionSlider->show();
_labelPrecisionComment->show();
hbox6->show();
_labelText->show();
_textHandlingCombo->show();
hbox5->show();
_localFontsCheck->show();
_embedImagesCheck->show();
vbox3->show();
alignment4->show();
_labelImportSettings->show();
_importSettingsFrame->show();
vbox1->show();
_previewArea->show();
hbox1->show();
// Connect signals
_previewArea->signal_expose_event().connect(sigc::mem_fun(*this, &PdfImportCairoDialog::_onExposePreview));
_pageNumberSpin_adj->signal_value_changed().connect(sigc::mem_fun(*this, &PdfImportCairoDialog::_onPageNumberChanged));
_cropCheck->signal_toggled().connect(sigc::mem_fun(*this, &PdfImportCairoDialog::_onToggleCropping));
_fallbackPrecisionSlider_adj->signal_value_changed().connect(sigc::mem_fun(*this, &PdfImportCairoDialog::_onPrecisionChanged));
_render_thumb = false;
_cairo_surface = NULL;
_render_thumb = true;
// Set default preview size
_preview_width = 200;
_preview_height = 300;
// Init preview
_thumb_data = NULL;
_pageNumberSpin_adj->set_value(1.0);
_current_page = 1;
_setPreviewPage(_current_page);
set_default (*okbutton);
set_focus (*okbutton);
}
PdfImportCairoDialog::~PdfImportCairoDialog() {
if (_cairo_surface) {
cairo_surface_destroy(_cairo_surface);
}
if (_thumb_data) {
if (_render_thumb) {
delete _thumb_data;
} else {
// -->gfree(_thumb_data);
delete _thumb_data;
}
}
}
bool PdfImportCairoDialog::showDialog() {
show();
gint b = run();
hide();
if ( b == Gtk::RESPONSE_OK ) {
return TRUE;
} else {
return FALSE;
}
}
int PdfImportCairoDialog::getSelectedPage() {
return _current_page;
}
/**
* \brief Retrieves the current settings into a repr which SvgBuilder will use
* for determining the behaviour desired by the user
*/
void PdfImportCairoDialog::getImportSettings(Inkscape::XML::Node *prefs) {
sp_repr_set_svg_double(prefs, "selectedPage", (double)_current_page);
if (_cropCheck->get_active()) {
Glib::ustring current_choice = _cropTypeCombo->get_active_text();
int num_crop_choices = sizeof(crop_setting_choices) / sizeof(crop_setting_choices[0]);
int i = 0;
for ( ; i < num_crop_choices ; i++ ) {
if ( current_choice == _(crop_setting_choices[i]) ) {
break;
}
}
sp_repr_set_svg_double(prefs, "cropTo", (double)i);
} else {
sp_repr_set_svg_double(prefs, "cropTo", -1.0);
}
sp_repr_set_svg_double(prefs, "approximationPrecision",
_fallbackPrecisionSlider->get_value());
if (_localFontsCheck->get_active()) {
prefs->setAttribute("localFonts", "1");
} else {
prefs->setAttribute("localFonts", "0");
}
if (_embedImagesCheck->get_active()) {
prefs->setAttribute("embedImages", "1");
} else {
prefs->setAttribute("embedImages", "0");
}
}
/**
* \brief Redisplay the comment on the current approximation precision setting
* Evenly divides the interval of possible values between the available labels.
*/
void PdfImportCairoDialog::_onPrecisionChanged() {
static Glib::ustring precision_comments[] = {
Glib::ustring(C_("PDF input precision", "rough")),
Glib::ustring(C_("PDF input precision", "medium")),
Glib::ustring(C_("PDF input precision", "fine")),
Glib::ustring(C_("PDF input precision", "very fine"))
};
double min = _fallbackPrecisionSlider_adj->get_lower();
double max = _fallbackPrecisionSlider_adj->get_upper();
int num_intervals = sizeof(precision_comments) / sizeof(precision_comments[0]);
double interval_len = ( max - min ) / (double)num_intervals;
double value = _fallbackPrecisionSlider_adj->get_value();
int comment_idx = (int)floor( ( value - min ) / interval_len );
_labelPrecisionComment->set_label(precision_comments[comment_idx]);
}
void PdfImportCairoDialog::_onToggleCropping() {
_cropTypeCombo->set_sensitive(_cropCheck->get_active());
}
void PdfImportCairoDialog::_onPageNumberChanged() {
int page = _pageNumberSpin->get_value_as_int();
_current_page = CLAMP(page, 1, poppler_document_get_n_pages(_poppler_doc));
_setPreviewPage(_current_page);
}
/**
* \brief Copies image data from a Cairo surface to a pixbuf
*
* Borrowed from libpoppler, from the file poppler-page.cc
* Copyright (C) 2005, Red Hat, Inc.
*
*/
static void copy_cairo_surface_to_pixbuf (cairo_surface_t *surface,
unsigned char *data,
GdkPixbuf *pixbuf)
{
int cairo_width, cairo_height, cairo_rowstride;
unsigned char *pixbuf_data, *dst, *cairo_data;
int pixbuf_rowstride, pixbuf_n_channels;
unsigned int *src;
int x, y;
cairo_width = cairo_image_surface_get_width (surface);
cairo_height = cairo_image_surface_get_height (surface);
cairo_rowstride = cairo_width * 4;
cairo_data = data;
pixbuf_data = gdk_pixbuf_get_pixels (pixbuf);
pixbuf_rowstride = gdk_pixbuf_get_rowstride (pixbuf);
pixbuf_n_channels = gdk_pixbuf_get_n_channels (pixbuf);
if (cairo_width > gdk_pixbuf_get_width (pixbuf))
cairo_width = gdk_pixbuf_get_width (pixbuf);
if (cairo_height > gdk_pixbuf_get_height (pixbuf))
cairo_height = gdk_pixbuf_get_height (pixbuf);
for (y = 0; y < cairo_height; y++)
{
src = (unsigned int *) (cairo_data + y * cairo_rowstride);
dst = pixbuf_data + y * pixbuf_rowstride;
for (x = 0; x < cairo_width; x++)
{
dst[0] = (*src >> 16) & 0xff;
dst[1] = (*src >> 8) & 0xff;
dst[2] = (*src >> 0) & 0xff;
if (pixbuf_n_channels == 4)
dst[3] = (*src >> 24) & 0xff;
dst += pixbuf_n_channels;
src++;
}
}
}
/**
* \brief Updates the preview area with the previously rendered thumbnail
*/
bool PdfImportCairoDialog::_onExposePreview(GdkEventExpose */*event*/) {
// Check if we have a thumbnail at all
if (!_thumb_data) {
return true;
}
// Create the pixbuf for the thumbnail
Glib::RefPtr<Gdk::Pixbuf> thumb;
if (_render_thumb) {
thumb = Gdk::Pixbuf::create(Gdk::COLORSPACE_RGB, true,
8, _thumb_width, _thumb_height);
} else {
thumb = Gdk::Pixbuf::create_from_data(_thumb_data, Gdk::COLORSPACE_RGB,
false, 8, _thumb_width, _thumb_height, _thumb_rowstride);
}
if (!thumb) {
return true;
}
// Set background to white
if (_render_thumb) {
thumb->fill(0xffffffff);
Glib::RefPtr<Gdk::Pixmap> back_pixmap = Gdk::Pixmap::create(
_previewArea->get_window(), _thumb_width, _thumb_height, -1);
if (!back_pixmap) {
return true;
}
back_pixmap->draw_pixbuf(Glib::RefPtr<Gdk::GC>(), thumb, 0, 0, 0, 0,
_thumb_width, _thumb_height,
Gdk::RGB_DITHER_NONE, 0, 0);
_previewArea->get_window()->set_back_pixmap(back_pixmap, false);
_previewArea->get_window()->clear();
}
// Copy the thumbnail image from the Cairo surface
if (_render_thumb) {
copy_cairo_surface_to_pixbuf(_cairo_surface, _thumb_data, thumb->gobj());
}
_previewArea->get_window()->draw_pixbuf(Glib::RefPtr<Gdk::GC>(), thumb,
0, 0, 0, _render_thumb ? 0 : 20,
-1, -1, Gdk::RGB_DITHER_NONE, 0, 0);
return true;
}
/**
* \brief Renders the given page's thumbnail using Cairo
*/
void PdfImportCairoDialog::_setPreviewPage(int page) {
PopplerPage *_previewed_page = poppler_document_get_page(_poppler_doc, page);
// Try to get a thumbnail from the PDF if possible
if (!_render_thumb) {
if (_thumb_data) {
// --> gfree(_thumb_data);
free(_thumb_data);
_thumb_data = NULL;
}
/*
--> if (!_previewed_page->loadThumb(&_thumb_data,
&_thumb_width, &_thumb_height, &_thumb_rowstride)) {
return;
}
*/
// Redraw preview area
_previewArea->set_size_request(_thumb_width, _thumb_height + 20);
_previewArea->queue_draw();
return;
}
// Get page size by accounting for rotation
double width, height;
// --> int rotate = _previewed_page->getRotate();
int rotate = 0;
if ( rotate == 90 || rotate == 270 ) {
// --> height = _previewed_page->getCropWidth();
// --> width = _previewed_page->getCropHeight();
} else {
poppler_page_get_size (_previewed_page, &width, &height);
// --> width = _previewed_page->getCropWidth();
// --> height = _previewed_page->getCropHeight();
}
// Calculate the needed scaling for the page
double scale_x = (double)_preview_width / width;
double scale_y = (double)_preview_height / height;
double scale_factor = ( scale_x > scale_y ) ? scale_y : scale_x;
// Create new Cairo surface
_thumb_width = (int)ceil( width * scale_factor );
_thumb_height = (int)ceil( height * scale_factor );
_thumb_rowstride = _thumb_width * 4;
if (_thumb_data) {
delete _thumb_data;
}
_thumb_data = new unsigned char[ _thumb_rowstride * _thumb_height ];
if (_cairo_surface) {
cairo_surface_destroy(_cairo_surface);
}
_cairo_surface = cairo_image_surface_create_for_data(_thumb_data,
CAIRO_FORMAT_ARGB32, _thumb_width, _thumb_height, _thumb_rowstride);
cairo_t *cr = cairo_create(_cairo_surface);
cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0); // Set fill color to white
cairo_paint(cr); // Clear it
cairo_scale(cr, scale_factor, scale_factor); // Use Cairo for resizing the image
// Render page
if (_poppler_doc != NULL) {
PopplerPage *poppler_page = poppler_document_get_page(_poppler_doc, page - 1);
poppler_page_render(poppler_page, cr);
g_object_unref(G_OBJECT(poppler_page));
}
// Clean up
cairo_destroy(cr);
// Redraw preview area
_previewArea->set_size_request(_preview_width, _preview_height);
_previewArea->queue_draw();
}
static cairo_status_t _write_ustring_cb(void *closure, const unsigned char *data, unsigned int length);
SPDocument *
PdfInputCairo::open(Inkscape::Extension::Input * /*mod*/, const gchar * uri) {
g_message("Attempting to open using PdfInputCairo\n");
gchar* filename_uri = g_filename_to_uri(uri, NULL, NULL);
GError *error = NULL;
/// @todo handle passwort
/// @todo check if win32 unicode needs special attention
PopplerDocument* document = poppler_document_new_from_file(filename_uri, NULL, &error);
if(error != NULL) {
g_message("Unable to read file: %s\n", error->message);
g_error_free (error);
}
if (document == NULL) {
return NULL;
}
// create and show the import dialog
PdfImportCairoDialog *dlg = NULL;
if (inkscape_use_gui()) {
dlg = new PdfImportCairoDialog(document);
if (!dlg->showDialog()) {
delete dlg;
return NULL;
}
}
// Get needed page
int page_num;
if (dlg) {
page_num = dlg->getSelectedPage();
delete dlg;
}
else
page_num = 1;
double width, height;
PopplerPage* page = poppler_document_get_page(document, page_num - 1);
poppler_page_get_size(page, &width, &height);
Glib::ustring* output = new Glib::ustring("");
cairo_surface_t* surface = cairo_svg_surface_create_for_stream(Inkscape::Extension::Internal::_write_ustring_cb,
output, width, height);
cairo_t* cr = cairo_create(surface);
poppler_page_render(page, cr);
cairo_show_page(cr);
cairo_destroy(cr);
cairo_surface_destroy(surface);
SPDocument * doc = SPDocument::createNewDocFromMem(output->c_str(), output->length(), TRUE);
delete output;
g_object_unref(page);
g_object_unref(document);
return doc;
}
static cairo_status_t
_write_ustring_cb(void *closure, const unsigned char *data, unsigned int length)
{
Glib::ustring* stream = (Glib::ustring*)closure;
stream->append((const char*)data, length);
return CAIRO_STATUS_SUCCESS;
}
#include "clear-n_.h"
void
PdfInputCairo::init(void) {
Inkscape::Extension::Extension * ext;
ext = Inkscape::Extension::build_from_mem(
"<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n"
"<name>PDF Input</name>\n"
"<id>org.inkscape.input.cairo-pdf</id>\n"
"<input>\n"
"<extension>.pdf</extension>\n"
"<mimetype>application/pdf</mimetype>\n"
"<filetypename>Adobe PDF via poppler-cairo (*.pdf)</filetypename>\n"
"<filetypetooltip>PDF Document</filetypetooltip>\n"
"</input>\n"
"</inkscape-extension>", new PdfInputCairo());
} // init
} } } /* namespace Inkscape, Extension, Implementation */
#endif /* HAVE_POPPLER_CAIRO */
#endif /* HAVE_POPPLER_GLIB */
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :