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Diffstat (limited to 'src/extension/internal/pdfinput/pdf-input.cpp')
| -rw-r--r-- | src/extension/internal/pdfinput/pdf-input.cpp | 1003 |
1 files changed, 1003 insertions, 0 deletions
diff --git a/src/extension/internal/pdfinput/pdf-input.cpp b/src/extension/internal/pdfinput/pdf-input.cpp new file mode 100644 index 0000000..cdf2237 --- /dev/null +++ b/src/extension/internal/pdfinput/pdf-input.cpp @@ -0,0 +1,1003 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Native PDF import using libpoppler. + * + * Authors: + * miklos erdelyi + * Abhishek Sharma + * + * Copyright (C) 2007 Authors + * + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + * + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" // only include where actually required! +#endif + +#include "pdf-input.h" + +#ifdef HAVE_POPPLER +#include <poppler/goo/GooString.h> +#include <poppler/ErrorCodes.h> +#include <poppler/GlobalParams.h> +#include <poppler/PDFDoc.h> +#include <poppler/Page.h> +#include <poppler/Catalog.h> + +#ifdef HAVE_POPPLER_CAIRO +#include <poppler/glib/poppler.h> +#include <poppler/glib/poppler-document.h> +#include <poppler/glib/poppler-page.h> +#endif + +#include <gdkmm/general.h> +#include <glibmm/convert.h> +#include <glibmm/i18n.h> +#include <glibmm/miscutils.h> +#include <gtk/gtk.h> +#include <gtkmm/checkbutton.h> +#include <gtkmm/comboboxtext.h> +#include <gtkmm/drawingarea.h> +#include <gtkmm/frame.h> +#include <gtkmm/radiobutton.h> +#include <gtkmm/scale.h> +#include <utility> + +#include "document-undo.h" +#include "extension/input.h" +#include "extension/system.h" +#include "inkscape.h" +#include "object/sp-root.h" +#include "pdf-parser.h" +#include "ui/dialog-events.h" +#include "ui/widget/frame.h" +#include "ui/widget/spinbutton.h" +#include "util/units.h" + + + +namespace { + +void sanitize_page_number(int &page_num, const int num_pages) { + if (page_num < 1 || page_num > num_pages) { + std::cerr << "Inkscape::Extension::Internal::PdfInput::open: Bad page number " + << page_num + << ". Import first page instead." + << std::endl; + page_num = 1; + } +} + +} + +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") +}; + +PdfImportDialog::PdfImportDialog(std::shared_ptr<PDFDoc> doc, const gchar */*uri*/) + : _pdf_doc(std::move(doc)) +{ + assert(_pdf_doc); +#ifdef HAVE_POPPLER_CAIRO + _poppler_doc = NULL; +#endif // HAVE_POPPLER_CAIRO + cancelbutton = Gtk::manage(new Gtk::Button(_("_Cancel"), true)); + okbutton = Gtk::manage(new Gtk::Button(_("_OK"), true)); + _labelSelect = Gtk::manage(new class Gtk::Label(_("Select page:"))); + + // All Pages + _pageAllPages = Gtk::manage(new class Gtk::CheckButton(_("All"))); + + // Page number + auto _pageNumberSpin_adj = Gtk::Adjustment::create(1, 1, _pdf_doc->getNumPages(), 1, 10, 0); + _pageNumberSpin = Gtk::manage(new Inkscape::UI::Widget::SpinButton(_pageNumberSpin_adj, 1, 1)); + _pageNumberSpin->set_sensitive(false); + _labelTotalPages = Gtk::manage(new class Gtk::Label()); + hbox2 = Gtk::manage(new class Gtk::Box(Gtk::ORIENTATION_HORIZONTAL, 0)); + + // Disable the page selector when there's only one page + int num_pages = _pdf_doc->getCatalog()->getNumPages(); + if ( num_pages == 1 ) { + _pageAllPages->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::Box(Gtk::ORIENTATION_HORIZONTAL, 4)); + vbox2 = Gtk::manage(new class Gtk::Box(Gtk::ORIENTATION_VERTICAL, 4)); + _pageSettingsFrame = Gtk::manage(new class Inkscape::UI::Widget::Frame(_("Page settings"))); + _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."))); + _labelPrecisionWarning->set_max_width_chars(50); + +#ifdef HAVE_POPPLER_CAIRO + Gtk::RadioButton::Group group; + _importViaPoppler = Gtk::manage(new class Gtk::RadioButton(group,_("Poppler/Cairo import"))); + _labelViaPoppler = Gtk::manage(new class Gtk::Label(_("Import via external library. Text consists of groups containing cloned glyphs where each glyph is a path. Images are stored internally. Meshes cause entire document to be rendered as a raster image."))); + _labelViaPoppler->set_max_width_chars(50); + _importViaInternal = Gtk::manage(new class Gtk::RadioButton(group,_("Internal import"))); + _labelViaInternal = Gtk::manage(new class Gtk::Label(_("Import via internal (Poppler derived) library. Text is stored as text but white space is missing. Meshes are converted to tiles, the number depends on the precision set below."))); + _labelViaInternal->set_max_width_chars(50); +#endif + + _fallbackPrecisionSlider_adj = Gtk::Adjustment::create(2, 1, 256, 1, 10, 10); + _fallbackPrecisionSlider = Gtk::manage(new class Gtk::Scale(_fallbackPrecisionSlider_adj)); + _fallbackPrecisionSlider->set_value(2.0); + _labelPrecisionComment = Gtk::manage(new class Gtk::Label(_("rough"))); + hbox6 = Gtk::manage(new class Gtk::Box(Gtk::ORIENTATION_HORIZONTAL, 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")); + // hbox5 = Gtk::manage(new class Gtk::Box(Gtk::ORIENTATION_HORIZONTAL, 4)); + + // Font option + _localFontsCheck = Gtk::manage(new class Gtk::CheckButton(_("Replace PDF fonts by closest-named installed fonts"))); + + _embedImagesCheck = Gtk::manage(new class Gtk::CheckButton(_("Embed images"))); + vbox3 = Gtk::manage(new class Gtk::Box(Gtk::ORIENTATION_VERTICAL, 4)); + _importSettingsFrame = Gtk::manage(new class Inkscape::UI::Widget::Frame(_("Import settings"))); + vbox1 = Gtk::manage(new class Gtk::Box(Gtk::ORIENTATION_VERTICAL, 4)); + _previewArea = Gtk::manage(new class Gtk::DrawingArea()); + hbox1 = Gtk::manage(new class Gtk::Box(Gtk::ORIENTATION_HORIZONTAL, 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); + + _labelSelect->set_xalign(0.5); + _labelSelect->set_yalign(0.5); + _labelTotalPages->set_xalign(0.5); + _labelTotalPages->set_yalign(0.5); + _labelPrecision->set_xalign(0.0); + _labelPrecision->set_yalign(0.5); + _labelPrecisionWarning->set_xalign(0.0); + _labelPrecisionWarning->set_yalign(0.5); + _labelPrecisionComment->set_xalign(0.5); + _labelPrecisionComment->set_yalign(0.5); + + _labelSelect->set_margin_start(4); + _labelSelect->set_margin_end(4); + _labelTotalPages->set_margin_start(4); + _labelTotalPages->set_margin_end(4); + _labelPrecision->set_margin_start(4); + _labelPrecision->set_margin_end(4); + _labelPrecisionWarning->set_margin_start(4); + _labelPrecisionWarning->set_margin_end(4); + _labelPrecisionComment->set_margin_start(4); + _labelPrecisionComment->set_margin_end(4); + + _labelSelect->set_justify(Gtk::JUSTIFY_LEFT); + _labelSelect->set_line_wrap(false); + _labelSelect->set_use_markup(false); + _labelSelect->set_selectable(false); + _pageAllPages->set_can_focus(); + _pageAllPages->set_relief(Gtk::RELIEF_NORMAL); + _pageAllPages->set_mode(true); + _pageAllPages->set_active(true); + _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_justify(Gtk::JUSTIFY_LEFT); + _labelTotalPages->set_line_wrap(false); + _labelTotalPages->set_use_markup(false); + _labelTotalPages->set_selectable(false); + hbox2->pack_start(*_pageAllPages, Gtk::PACK_SHRINK, 4); + 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); + _pageSettingsFrame->add(*vbox2); + _pageSettingsFrame->set_border_width(4); + _labelPrecision->set_justify(Gtk::JUSTIFY_LEFT); + _labelPrecision->set_line_wrap(true); + _labelPrecision->set_use_markup(false); + _labelPrecision->set_selectable(false); + _labelPrecisionWarning->set_justify(Gtk::JUSTIFY_LEFT); + _labelPrecisionWarning->set_line_wrap(true); + _labelPrecisionWarning->set_use_markup(true); + _labelPrecisionWarning->set_selectable(false); + +#ifdef HAVE_POPPLER_CAIRO + _importViaPoppler->set_can_focus(); + _importViaPoppler->set_relief(Gtk::RELIEF_NORMAL); + _importViaPoppler->set_mode(true); + _importViaPoppler->set_active(false); + _importViaInternal->set_can_focus(); + _importViaInternal->set_relief(Gtk::RELIEF_NORMAL); + _importViaInternal->set_mode(true); + _importViaInternal->set_active(true); + _labelViaPoppler->set_line_wrap(true); + _labelViaInternal->set_line_wrap(true); + _labelViaPoppler->set_xalign(0); + _labelViaInternal->set_xalign(0); +#endif + + _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_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); +#ifdef HAVE_POPPLER_CAIRO + vbox3->pack_start(*_importViaPoppler, Gtk::PACK_SHRINK, 0); + vbox3->pack_start(*_labelViaPoppler, Gtk::PACK_SHRINK, 0); + vbox3->pack_start(*_importViaInternal, Gtk::PACK_SHRINK, 0); + vbox3->pack_start(*_labelViaInternal, Gtk::PACK_SHRINK, 0); +#endif + vbox3->pack_start(*_localFontsCheck, Gtk::PACK_SHRINK, 0); + vbox3->pack_start(*_embedImagesCheck, Gtk::PACK_SHRINK, 0); + 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); + _importSettingsFrame->add(*vbox3); + _importSettingsFrame->set_border_width(4); + vbox1->pack_start(*_pageSettingsFrame, Gtk::PACK_SHRINK, 0); + vbox1->pack_start(*_importSettingsFrame, Gtk::PACK_SHRINK, 0); + hbox1->pack_start(*vbox1); + hbox1->pack_start(*_previewArea, Gtk::PACK_SHRINK, 4); + + get_content_area()->set_homogeneous(false); + get_content_area()->set_spacing(0); + get_content_area()->pack_start(*hbox1); + + this->set_title(_("PDF Import Settings")); + this->set_modal(true); + sp_transientize(GTK_WIDGET(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->add_action_widget(*cancelbutton, -6); + this->add_action_widget(*okbutton, -5); + + this->show_all(); + + // Connect signals + _previewArea->signal_draw().connect(sigc::mem_fun(*this, &PdfImportDialog::_onDraw)); + _pageAllPages->signal_toggled().connect(sigc::mem_fun(*this, &PdfImportDialog::_onToggleAllPages)); + _pageNumberSpin_adj->signal_value_changed().connect(sigc::mem_fun(*this, &PdfImportDialog::_onPageNumberChanged)); + _cropCheck->signal_toggled().connect(sigc::mem_fun(*this, &PdfImportDialog::_onToggleCropping)); + _fallbackPrecisionSlider_adj->signal_value_changed().connect(sigc::mem_fun(*this, &PdfImportDialog::_onPrecisionChanged)); +#ifdef HAVE_POPPLER_CAIRO + _importViaPoppler->signal_toggled().connect(sigc::mem_fun(*this, &PdfImportDialog::_onToggleImport)); +#endif + + _render_thumb = false; +#ifdef HAVE_POPPLER_CAIRO + _cairo_surface = NULL; + _render_thumb = true; + + // Create PopplerDocument + std::string filename = _pdf_doc->getFileName()->getCString(); + if (!Glib::path_is_absolute(filename)) { + filename = Glib::build_filename(Glib::get_current_dir(),filename); + } + Glib::ustring full_uri = Glib::filename_to_uri(filename); + + if (!full_uri.empty()) { + _poppler_doc = poppler_document_new_from_file(full_uri.c_str(), NULL, NULL); + } + + // Set sensitivity of some widgets based on selected import type. + _onToggleImport(); +#endif + + // Set default preview size + _preview_width = 200; + _preview_height = 300; + + // Init preview + _thumb_data = nullptr; + _pageNumberSpin_adj->set_value(1.0); + _current_page = -1; + _setPreviewPage(1); + + set_default (*okbutton); + set_focus (*okbutton); +} + +PdfImportDialog::~PdfImportDialog() { +#ifdef HAVE_POPPLER_CAIRO + if (_cairo_surface) { + cairo_surface_destroy(_cairo_surface); + } + if (_poppler_doc) { + g_object_unref(G_OBJECT(_poppler_doc)); + } +#endif + if (_thumb_data) { + gfree(_thumb_data); + } +} + +bool PdfImportDialog::showDialog() { + show(); + gint b = run(); + hide(); + if ( b == Gtk::RESPONSE_OK ) { + return TRUE; + } else { + return FALSE; + } +} + +int PdfImportDialog::getSelectedPage() { + return _current_page; +} + +bool PdfImportDialog::getImportMethod() { +#ifdef HAVE_POPPLER_CAIRO + return _importViaPoppler->get_active(); +#else + return false; +#endif +} + +/** + * \brief Retrieves the current settings into a repr which SvgBuilder will use + * for determining the behaviour desired by the user + */ +void PdfImportDialog::getImportSettings(Inkscape::XML::Node *prefs) { + prefs->setAttributeSvgDouble("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; + } + } + prefs->setAttributeSvgDouble("cropTo", (double)i); + } else { + prefs->setAttributeSvgDouble("cropTo", -1.0); + } + prefs->setAttributeSvgDouble("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"); + } +#ifdef HAVE_POPPLER_CAIRO + if (_importViaPoppler->get_active()) { + prefs->setAttribute("importviapoppler", "1"); + } else { + prefs->setAttribute("importviapoppler", "0"); + } +#endif +} + +/** + * \brief Redisplay the comment on the current approximation precision setting + * Evenly divides the interval of possible values between the available labels. + */ +void PdfImportDialog::_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 PdfImportDialog::_onToggleAllPages() { + if (_pageAllPages->get_active()) { + _pageNumberSpin->set_sensitive(false); + _current_page = -1; + _setPreviewPage(1); + } else { + _pageNumberSpin->set_sensitive(true); + _onPageNumberChanged(); + } +} + +void PdfImportDialog::_onToggleCropping() { + _cropTypeCombo->set_sensitive(_cropCheck->get_active()); +} + +void PdfImportDialog::_onPageNumberChanged() { + int page = _pageNumberSpin->get_value_as_int(); + _current_page = CLAMP(page, 1, _pdf_doc->getCatalog()->getNumPages()); + _setPreviewPage(_current_page); +} + +#ifdef HAVE_POPPLER_CAIRO +void PdfImportDialog::_onToggleImport() { + if( _importViaPoppler->get_active() ) { + hbox3->set_sensitive(false); + _localFontsCheck->set_sensitive(false); + _embedImagesCheck->set_sensitive(false); + hbox6->set_sensitive(false); + _pageAllPages->set_sensitive(false); + _pageAllPages->set_active(false); + } else { + hbox3->set_sensitive(); + _localFontsCheck->set_sensitive(); + _embedImagesCheck->set_sensitive(); + hbox6->set_sensitive(); + _pageAllPages->set_sensitive(true); + _pageAllPages->set_active(true); + } +} +#endif + + +#ifdef HAVE_POPPLER_CAIRO +/** + * \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 = reinterpret_cast<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++; + } + } +} + +#endif + +bool PdfImportDialog::_onDraw(const Cairo::RefPtr<Cairo::Context>& cr) { + // 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); + Gdk::Cairo::set_source_pixbuf(cr, thumb, 0, 0); + cr->paint(); + } +#ifdef HAVE_POPPLER_CAIRO + // Copy the thumbnail image from the Cairo surface + if (_render_thumb) { + copy_cairo_surface_to_pixbuf(_cairo_surface, _thumb_data, thumb->gobj()); + } +#endif + + Gdk::Cairo::set_source_pixbuf(cr, thumb, 0, _render_thumb ? 0 : 20); + cr->paint(); + return true; +} + +/** + * \brief Renders the given page's thumbnail using Cairo + */ +void PdfImportDialog::_setPreviewPage(int page) { + + _previewed_page = _pdf_doc->getCatalog()->getPage(page); + g_return_if_fail(_previewed_page); + // Try to get a thumbnail from the PDF if possible + if (!_render_thumb) { + if (_thumb_data) { + gfree(_thumb_data); + _thumb_data = nullptr; + } + 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; + } +#ifdef HAVE_POPPLER_CAIRO + // Get page size by accounting for rotation + double width, height; + int rotate = _previewed_page->getRotate(); + if ( rotate == 90 || rotate == 270 ) { + height = _previewed_page->getCropWidth(); + width = _previewed_page->getCropHeight(); + } else { + 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) { + gfree(_thumb_data); + } + _thumb_data = reinterpret_cast<unsigned char *>(gmalloc(_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(); +#endif +} + +//////////////////////////////////////////////////////////////////////////////// + +#ifdef HAVE_POPPLER_CAIRO +/// helper method +static cairo_status_t + _write_ustring_cb(void *closure, const unsigned char *data, unsigned int length) +{ + Glib::ustring* stream = static_cast<Glib::ustring*>(closure); + stream->append(reinterpret_cast<const char*>(data), length); + + return CAIRO_STATUS_SUCCESS; +} +#endif + +/** + * Parses the selected page of the given PDF document using PdfParser. + */ +SPDocument * +PdfInput::open(::Inkscape::Extension::Input * /*mod*/, const gchar * uri) { + + // Initialize the globalParams variable for poppler + if (!globalParams) { + globalParams = _POPPLER_NEW_GLOBAL_PARAMS(); + } + + + // Open the file using poppler + // PDFDoc is from poppler. PDFDoc is used for preview and for native import. + std::shared_ptr<PDFDoc> pdf_doc; + + // poppler does not use glib g_open. So on win32 we must use unicode call. code was copied from + // glib gstdio.c + pdf_doc = _POPPLER_MAKE_SHARED_PDFDOC(uri); // TODO: Could ask for password + + if (!pdf_doc->isOk()) { + int error = pdf_doc->getErrorCode(); + if (error == errEncrypted) { + g_message("Document is encrypted."); + } else if (error == errOpenFile) { + g_message("couldn't open the PDF file."); + } else if (error == errBadCatalog) { + g_message("couldn't read the page catalog."); + } else if (error == errDamaged) { + g_message("PDF file was damaged and couldn't be repaired."); + } else if (error == errHighlightFile) { + g_message("nonexistent or invalid highlight file."); + } else if (error == errBadPrinter) { + g_message("invalid printer."); + } else if (error == errPrinting) { + g_message("Error during printing."); + } else if (error == errPermission) { + g_message("PDF file does not allow that operation."); + } else if (error == errBadPageNum) { + g_message("invalid page number."); + } else if (error == errFileIO) { + g_message("file IO error."); + } else { + g_message("Failed to load document from data (error %d)", error); + } + + return nullptr; + } + + + std::unique_ptr<PdfImportDialog> dlg; + if (INKSCAPE.use_gui()) { + dlg = std::make_unique<PdfImportDialog>(pdf_doc, uri); + if (!dlg->showDialog()) { + throw Input::open_cancelled(); + } + } + + // Get options + int page_num = 1; + bool is_importvia_poppler = false; + if (dlg) { + page_num = dlg->getSelectedPage(); +#ifdef HAVE_POPPLER_CAIRO + is_importvia_poppler = dlg->getImportMethod(); + // printf("PDF import via %s.\n", is_importvia_poppler ? "poppler" : "native"); +#endif + } else { + page_num = INKSCAPE.get_pdf_page(); +#ifdef HAVE_POPPLER_CAIRO + is_importvia_poppler = INKSCAPE.get_pdf_poppler(); +#endif + } + + // Create Inkscape document from file + SPDocument *doc = nullptr; + bool saved = false; + if(!is_importvia_poppler) + { + // Create document + doc = SPDocument::createNewDoc(nullptr, true, true); + saved = DocumentUndo::getUndoSensitive(doc); + DocumentUndo::setUndoSensitive(doc, false); // No need to undo in this temporary document + + // Create builder + gchar *docname = g_path_get_basename(uri); + gchar *dot = g_strrstr(docname, "."); + if (dot) { + *dot = 0; + } + SvgBuilder *builder = new SvgBuilder(doc, docname, pdf_doc->getXRef()); + + // Get preferences + Inkscape::XML::Node *prefs = builder->getPreferences(); + if (dlg) + dlg->getImportSettings(prefs); + + if (page_num > 0) { + add_builder_page(pdf_doc, builder, doc, page_num); + } else { + // Multi page (open all pages) + Catalog *catalog = pdf_doc->getCatalog(); + for (int p = 1; p <= catalog->getNumPages(); p++) { + // Incriment the page building here. + builder->pushPage(); + // And then add each of the pages + add_builder_page(pdf_doc, builder, doc, p); + } + } + + delete builder; + g_free(docname); + } + else + { +#ifdef HAVE_POPPLER_CAIRO + // the poppler import + + std::string full_path = uri; + if (!Glib::path_is_absolute(uri)) { + full_path = Glib::build_filename(Glib::get_current_dir(),uri); + } + Glib::ustring full_uri = Glib::filename_to_uri(full_path); + + GError *error = NULL; + /// @todo handle password + /// @todo check if win32 unicode needs special attention + PopplerDocument* document = poppler_document_new_from_file(full_uri.c_str(), NULL, &error); + PopplerPage* page = nullptr; + + if(error != NULL) { + std::cerr << "PDFInput::open: error opening document: " << full_uri << std::endl; + g_error_free (error); + } + + if (document) { + int const num_pages = poppler_document_get_n_pages(document); + sanitize_page_number(page_num, num_pages); + page = poppler_document_get_page(document, page_num - 1); + } + + if (page) { + double width, height; + poppler_page_get_size(page, &width, &height); + + Glib::ustring output; + cairo_surface_t* surface = cairo_svg_surface_create_for_stream(Inkscape::Extension::Internal::_write_ustring_cb, + &output, width, height); + + // Reset back to PT for cairo 1.17.6 and above which sets to UNIT_USER + cairo_svg_surface_set_document_unit(surface, CAIRO_SVG_UNIT_PT); + + // This magical function results in more fine-grain fallbacks. In particular, a mesh + // gradient won't necessarily result in the whole PDF being rasterized. Of course, SVG + // 1.2 never made it as a standard, but hey, we'll take what we can get. This trick was + // found by examining the 'pdftocairo' code. + cairo_svg_surface_restrict_to_version( surface, CAIRO_SVG_VERSION_1_2 ); + + cairo_t* cr = cairo_create(surface); + + poppler_page_render_for_printing(page, cr); + cairo_show_page(cr); + + cairo_destroy(cr); + cairo_surface_destroy(surface); + + doc = SPDocument::createNewDocFromMem(output.c_str(), output.length(), TRUE); + } else if (document) { + std::cerr << "PDFInput::open: error opening page " << page_num << " of document: " << full_uri << std::endl; + } + + // Cleanup + if (document) { + g_object_unref(G_OBJECT(document)); + if (page) { + g_object_unref(G_OBJECT(page)); + } + } + + if (!doc) { + return nullptr; + } + + saved = DocumentUndo::getUndoSensitive(doc); + DocumentUndo::setUndoSensitive(doc, false); // No need to undo in this temporary document +#endif + } + + // Set viewBox if it doesn't exist + if (!doc->getRoot()->viewBox_set) { + doc->setViewBox(Geom::Rect::from_xywh(0, 0, doc->getWidth().value(doc->getDisplayUnit()), doc->getHeight().value(doc->getDisplayUnit()))); + } + + // Restore undo + DocumentUndo::setUndoSensitive(doc, saved); + + return doc; +} + +/** + * Parses the selected page object of the given PDF document using PdfParser. + */ +void +PdfInput::add_builder_page(std::shared_ptr<PDFDoc>pdf_doc, SvgBuilder *builder, SPDocument *doc, int page_num) +{ + // native importer + Catalog *catalog = pdf_doc->getCatalog(); + + int const num_pages = catalog->getNumPages(); + Inkscape::XML::Node *prefs = builder->getPreferences(); + + // Check page exists + sanitize_page_number(page_num, num_pages); + Page *page = catalog->getPage(page_num); + if (!page) { + std::cerr << "PDFInput::open: error opening page " << page_num << std::endl; + return; + } + + // Apply crop settings + _POPPLER_CONST PDFRectangle *clipToBox = nullptr; + double crop_setting = prefs->getAttributeDouble("cropTo", -1.0); + + if (crop_setting >= 0.0) { // Do page clipping + int crop_choice = (int)crop_setting; + switch (crop_choice) { + case 0: // Media box + clipToBox = page->getMediaBox(); + break; + case 1: // Crop box + clipToBox = page->getCropBox(); + break; + case 2: // Bleed box + clipToBox = page->getBleedBox(); + break; + case 3: // Trim box + clipToBox = page->getTrimBox(); + break; + case 4: // Art box + clipToBox = page->getArtBox(); + break; + default: + break; + } + } + + // Create parser (extension/internal/pdfinput/pdf-parser.h) + PdfParser *pdf_parser = new PdfParser(pdf_doc->getXRef(), builder, page_num-1, page->getRotate(), + page->getResourceDict(), page->getCropBox(), clipToBox); + + // Set up approximation precision for parser. Used for converting Mesh Gradients into tiles. + double color_delta = prefs->getAttributeDouble("approximationPrecision", 2.0); + if ( color_delta <= 0.0 ) { + color_delta = 1.0 / 2.0; + } else { + color_delta = 1.0 / color_delta; + } + for ( int i = 1 ; i <= pdfNumShadingTypes ; i++ ) { + pdf_parser->setApproximationPrecision(i, color_delta, 6); + } + + // Parse the document structure +#if defined(POPPLER_NEW_OBJECT_API) + Object obj = page->getContents(); +#else + Object obj; + page->getContents(&obj); +#endif + if (!obj.isNull()) { + pdf_parser->parse(&obj); + } + + // Cleanup +#if !defined(POPPLER_NEW_OBJECT_API) + obj.free(); +#endif + delete pdf_parser; +} + +#include "../clear-n_.h" + +void PdfInput::init() { + /* PDF in */ + // clang-format off + Inkscape::Extension::build_from_mem( + "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n" + "<name>" N_("PDF Input") "</name>\n" + "<id>org.inkscape.input.pdf</id>\n" + "<input>\n" + "<extension>.pdf</extension>\n" + "<mimetype>application/pdf</mimetype>\n" + "<filetypename>" N_("Portable Document Format (*.pdf)") "</filetypename>\n" + "<filetypetooltip>" N_("Portable Document Format") "</filetypetooltip>\n" + "</input>\n" + "</inkscape-extension>", new PdfInput()); + // clang-format on + + /* AI in */ + // clang-format off + Inkscape::Extension::build_from_mem( + "<inkscape-extension xmlns=\"" INKSCAPE_EXTENSION_URI "\">\n" + "<name>" N_("AI Input") "</name>\n" + "<id>org.inkscape.input.ai</id>\n" + "<input>\n" + "<extension>.ai</extension>\n" + "<mimetype>image/x-adobe-illustrator</mimetype>\n" + "<filetypename>" N_("Adobe Illustrator 9.0 and above (*.ai)") "</filetypename>\n" + "<filetypetooltip>" N_("Open files saved in Adobe Illustrator 9.0 and newer versions") "</filetypetooltip>\n" + "</input>\n" + "</inkscape-extension>", new PdfInput()); + // clang-format on +} // init + +} } } /* namespace Inkscape, Extension, Implementation */ + +#endif /* HAVE_POPPLER */ + +/* + 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 : |