// SPDX-License-Identifier: GPL-2.0-or-later /* * This is the code that moves all of the SVG loading and saving into * the module format. Really Inkscape is built to handle these formats * internally, so this is just calling those internal functions. * * Authors: * Lauris Kaplinski * Ted Gould * Jon A. Cruz * Abhishek Sharma * * Copyright (C) 2002-2003 Authors * * Released under GNU GPL v2+, read the file 'COPYING' for more information. */ #include #include #include #include "document.h" #include "inkscape.h" #include "inkscape-application.h" #include "preferences.h" #include "extension/output.h" #include "extension/input.h" #include "extension/system.h" #include "file.h" #include "svg.h" #include "file.h" #include "display/cairo-utils.h" #include "extension/system.h" #include "extension/output.h" #include "xml/attribute-record.h" #include "xml/simple-document.h" #include "object/sp-image.h" #include "object/sp-root.h" #include "object/sp-text.h" #include "util/units.h" #include "selection-chemistry.h" // TODO due to internal breakage in glibmm headers, this must be last: #include namespace Inkscape { namespace Extension { namespace Internal { #include "clear-n_.h" using Inkscape::XML::Node; /* * Removes all sodipodi and inkscape elements and attributes from an xml tree. * used to make plain svg output. */ static void pruneExtendedNamespaces( Inkscape::XML::Node *repr ) { if (repr) { if ( repr->type() == Inkscape::XML::NodeType::ELEMENT_NODE ) { std::vector attrsRemoved; for ( const auto & it : repr->attributeList()) { const gchar* attrName = g_quark_to_string(it.key); if ((strncmp("inkscape:", attrName, 9) == 0) || (strncmp("sodipodi:", attrName, 9) == 0)) { attrsRemoved.push_back(attrName); } } // Can't change the set we're iterating over while we are iterating. for (auto & it : attrsRemoved) { repr->removeAttribute(it); } } std::vector nodesRemoved; for ( Node *child = repr->firstChild(); child; child = child->next() ) { if((strncmp("inkscape:", child->name(), 9) == 0) || strncmp("sodipodi:", child->name(), 9) == 0) { nodesRemoved.push_back(child); } else { pruneExtendedNamespaces(child); } } for (auto & it : nodesRemoved) { repr->removeChild(it); } } } /* * Similar to the above sodipodi and inkscape prune, but used on all documents * to remove problematic elements (for example Adobe's i:pgf tag) only removes * known garbage tags. */ static void pruneProprietaryGarbage( Inkscape::XML::Node *repr ) { if (repr) { std::vector nodesRemoved; for ( Node *child = repr->firstChild(); child; child = child->next() ) { if((strncmp("i:pgf", child->name(), 5) == 0)) { nodesRemoved.push_back(child); g_warning( "An Adobe proprietary tag was found which is known to cause issues. It was removed before saving."); } else { pruneProprietaryGarbage(child); } } for (auto & it : nodesRemoved) { repr->removeChild(it); } } } /** * \return None * * \brief Create new markers where necessary to simulate the SVG 2 marker attribute 'orient' * value 'auto-start-reverse'. * * \param repr The current element to check. * \param defs A pointer to the element. * \param css The properties of the element to check. * \param property Which property to check, either 'marker' or 'marker-start'. * */ static void remove_marker_auto_start_reverse(Inkscape::XML::Node *repr, Inkscape::XML::Node *defs, SPCSSAttr *css, Glib::ustring const &property) { Glib::ustring value = sp_repr_css_property (css, property.c_str(), ""); if (!value.empty()) { // Find reference static Glib::RefPtr regex = Glib::Regex::create("url\\(#([^\\)]*)\\)"); Glib::MatchInfo matchInfo; regex->match(value, matchInfo); if (matchInfo.matches()) { auto marker_name = matchInfo.fetch(1).raw(); Inkscape::XML::Node *marker = sp_repr_lookup_child (defs, "id", marker_name.c_str()); if (marker) { // Does marker use "auto-start-reverse"? if (strncmp(marker->attribute("orient"), "auto-start-reverse", 17)==0) { // See if a reversed marker already exists. auto marker_name_reversed = marker_name + "_reversed"; Inkscape::XML::Node *marker_reversed = sp_repr_lookup_child (defs, "id", marker_name_reversed.c_str()); if (!marker_reversed) { // No reversed marker, need to create! marker_reversed = repr->document()->createElement("svg:marker"); // Copy attributes for (const auto & iter : marker->attributeList()) { marker_reversed->setAttribute(g_quark_to_string(iter.key), iter.value); } // Override attributes marker_reversed->setAttribute("id", marker_name_reversed); marker_reversed->setAttribute("orient", "auto"); // Find transform const char* refX = marker_reversed->attribute("refX"); const char* refY = marker_reversed->attribute("refY"); std::string transform = "rotate(180"; if (refX) { transform += ","; transform += refX; if (refY) { if (refX) { transform += ","; transform += refY; } else { transform += ",0,"; transform += refY; } } } transform += ")"; // We can't set a transform on a marker... must create group first. Inkscape::XML::Node *group = repr->document()->createElement("svg:g"); group->setAttribute("transform", transform); marker_reversed->addChild(group, nullptr); // Copy all marker content to group. for (auto child = marker->firstChild() ; child != nullptr ; child = child->next() ) { auto new_child = child->duplicate(repr->document()); group->addChild(new_child, nullptr); new_child->release(); } // Add new marker to . defs->addChild(marker_reversed, marker); marker_reversed->release(); } // Change url to reference reversed marker. std::string marker_url("url(#" + marker_name_reversed + ")"); sp_repr_css_set_property(css, "marker-start", marker_url.c_str()); // Also fix up if property is marker shorthand. if (property == "marker") { std::string marker_old_url("url(#" + marker_name + ")"); sp_repr_css_unset_property(css, "marker"); sp_repr_css_set_property(css, "marker-mid", marker_old_url.c_str()); sp_repr_css_set_property(css, "marker-end", marker_old_url.c_str()); } sp_repr_css_set(repr, css, "style"); } // Uses auto-start-reverse } } } } // Called by remove_marker_context_paint() for each property value ("marker", "marker-start", ...). static void remove_marker_context_paint (Inkscape::XML::Node *repr, Inkscape::XML::Node *defs, Glib::ustring property) { // Value of 'marker', 'marker-start', ... property. std::string value("url(#"); value += repr->attribute("id"); value += ")"; // Generate a list of elements that reference this marker. std::vector to_fix_fill_stroke = sp_repr_lookup_property_many(repr->root(), property, value); for (auto it: to_fix_fill_stroke) { // Figure out value of fill... could be inherited. SPCSSAttr* css = sp_repr_css_attr_inherited (it, "style"); Glib::ustring fill = sp_repr_css_property (css, "fill", ""); Glib::ustring stroke = sp_repr_css_property (css, "stroke", ""); // Name of new marker. Glib::ustring marker_fixed_id = repr->attribute("id"); if (!fill.empty()) { marker_fixed_id += "_F" + fill; } if (!stroke.empty()) { marker_fixed_id += "_S" + stroke; } { // Replace characters from color value that are invalid in ids gchar *normalized_id = g_strdup(marker_fixed_id.c_str()); g_strdelimit(normalized_id, "#%", '-'); g_strdelimit(normalized_id, "(), \n\t\r", '.'); marker_fixed_id = normalized_id; g_free(normalized_id); } // See if a fixed marker already exists. // Could be more robust, assumes markers are direct children of . Inkscape::XML::Node* marker_fixed = sp_repr_lookup_child(defs, "id", marker_fixed_id.c_str()); if (!marker_fixed) { // Need to create new marker. marker_fixed = repr->duplicate(repr->document()); marker_fixed->setAttribute("id", marker_fixed_id); // This needs to be turned into a function that fixes all descendents. for (auto child = marker_fixed->firstChild() ; child != nullptr ; child = child->next()) { // Find style. SPCSSAttr* css = sp_repr_css_attr ( child, "style" ); Glib::ustring fill2 = sp_repr_css_property (css, "fill", ""); if (fill2 == "context-fill" ) { sp_repr_css_set_property (css, "fill", fill.c_str()); } if (fill2 == "context-stroke" ) { sp_repr_css_set_property (css, "fill", stroke.c_str()); } Glib::ustring stroke2 = sp_repr_css_property (css, "stroke", ""); if (stroke2 == "context-fill" ) { sp_repr_css_set_property (css, "stroke", fill.c_str()); } if (stroke2 == "context-stroke" ) { sp_repr_css_set_property (css, "stroke", stroke.c_str()); } sp_repr_css_set(child, css, "style"); sp_repr_css_attr_unref(css); } defs->addChild(marker_fixed, repr); marker_fixed->release(); } Glib::ustring marker_value = "url(#" + marker_fixed_id + ")"; sp_repr_css_set_property (css, property.c_str(), marker_value.c_str()); sp_repr_css_set (it, css, "style"); sp_repr_css_attr_unref(css); } } static void remove_marker_context_paint (Inkscape::XML::Node *repr, Inkscape::XML::Node *defs) { if (strncmp("svg:marker", repr->name(), 10) == 0) { if (!repr->attribute("id")) { std::cerr << "remove_marker_context_paint: without 'id'!" << std::endl; } else { // First see if we need to do anything. bool need_to_fix = false; // This needs to be turned into a function that searches all descendents. for (auto child = repr->firstChild() ; child != nullptr ; child = child->next()) { // Find style. SPCSSAttr* css = sp_repr_css_attr ( child, "style" ); Glib::ustring fill = sp_repr_css_property (css, "fill", ""); Glib::ustring stroke = sp_repr_css_property (css, "stroke", ""); if (fill == "context-fill" || fill == "context-stroke" || stroke == "context-fill" || stroke == "context-stroke" ) { need_to_fix = true; break; } sp_repr_css_attr_unref(css); } if (need_to_fix) { // Now we need to search document for all elements that use this marker. remove_marker_context_paint (repr, defs, "marker"); remove_marker_context_paint (repr, defs, "marker-start"); remove_marker_context_paint (repr, defs, "marker-mid"); remove_marker_context_paint (repr, defs, "marker-end"); } } } } /* * Recursively insert SVG 1.1 fallback for SVG 2 text (ignored by SVG 2 renderers including ours). * Notes: * Text must have been layed out. Access via old document. */ static void insert_text_fallback( Inkscape::XML::Node *repr, const SPDocument *original_doc, Inkscape::XML::Node *defs = nullptr ) { if (repr) { if (strncmp("svg:text", repr->name(), 8) == 0) { auto id = repr->attribute("id"); // std::cout << "insert_text_fallback: found text! id: " << (id?id:"null") << std::endl; // We need to get original SPText object to access layout. SPText* text = static_cast(original_doc->getObjectById( id )); if (text == nullptr) { std::cerr << "insert_text_fallback: bad cast" << std::endl; return; } if (!text->has_inline_size() && !text->has_shape_inside()) { // No SVG 2 text, nothing to do. return; } // We will keep this text node but replace all children. // Text object must be visible for the text calculatons to work bool was_hidden = text->isHidden(); text->setHidden(false); // For text in a shape, We need to unset 'text-anchor' or SVG 1.1 fallback won't work. // Note 'text' here refers to original document while 'repr' refers to new document copy. if (text->has_shape_inside()) { SPCSSAttr *css = sp_repr_css_attr(repr, "style" ); sp_repr_css_unset_property(css, "text-anchor"); sp_repr_css_set(repr, css, "style"); sp_repr_css_attr_unref(css); } // We need to put trailing white space into it's own tspan for inline size so // it is excluded during calculation of line position in SVG 1.1 renderers. bool trim = text->has_inline_size() && !(text->style->text_anchor.computed == SP_CSS_TEXT_ANCHOR_START); // Make a list of children to delete at end: std::vector old_children; for (auto child = repr->firstChild(); child; child = child->next()) { old_children.push_back(child); } // For round-tripping, xml:space (or 'white-space:pre') must be set. repr->setAttribute("xml:space", "preserve"); double text_x = repr->getAttributeDouble("x", 0.0); double text_y = repr->getAttributeDouble("y", 0.0); // std::cout << "text_x: " << text_x << " text_y: " << text_y << std::endl; // Loop over all lines in layout. for (auto it = text->layout.begin() ; it != text->layout.end() ; ) { // Create a with 'x' and 'y' for each line. Inkscape::XML::Node *line_tspan = repr->document()->createElement("svg:tspan"); // This could be useful if one wants to edit in an old version of Inkscape but we // need to check if it breaks anything: // line_tspan->setAttribute("sodipodi:role", "line"); // Hide overflow tspan (one line of text). if (text->layout.isHidden(it)) { line_tspan->setAttribute("style", "visibility:hidden"); } Geom::Point line_anchor_point = text->layout.characterAnchorPoint(it); double line_x = line_anchor_point[Geom::X]; double line_y = line_anchor_point[Geom::Y]; // std::cout << " line_anchor_point: " << line_anchor_point << std::endl; if (line_tspan->childCount() == 0) { if (text->is_horizontal()) { // std::cout << " horizontal: " << text_x << " " << line_anchor_point[Geom::Y] << std::endl; if (text->has_inline_size()) { // We use text_x as this is the reference for 'text-anchor' // (line_x is the start of the line which gives wrong position when 'text-anchor' not start). line_tspan->setAttributeSvgDouble("x", text_x); } else { // shape-inside (we don't have to worry about 'text-anchor'). line_tspan->setAttributeSvgDouble("x", line_x); } line_tspan->setAttributeSvgDouble("y", line_y); // FIXME: this will pick up the wrong end of counter-directional runs } else { // std::cout << " vertical: " << line_anchor_point[Geom::X] << " " << text_y << std::endl; line_tspan->setAttributeSvgDouble("x", line_x); // FIXME: this will pick up the wrong end of counter-directional runs if (text->has_inline_size()) { line_tspan->setAttributeSvgDouble("y", text_y); } else { line_tspan->setAttributeSvgDouble("y", line_y); } } } // Inside line , create s for each change of style or shift. (No shifts in SVG 2 flowed text.) // For simple lines, this creates an unneeded but so be it. Inkscape::Text::Layout::iterator it_line_end = it; it_line_end.nextStartOfLine(); // Find last span in line so we can put trailing whitespace in its own tspan for SVG 1.1 fallback. Inkscape::Text::Layout::iterator it_last_span = it; it_last_span.nextStartOfLine(); it_last_span.prevStartOfSpan(); Glib::ustring trailing_whitespace; // Loop over chunks in line while (it != it_line_end) { Inkscape::XML::Node *span_tspan = repr->document()->createElement("svg:tspan"); // use kerning to simulate justification and whatnot Inkscape::Text::Layout::iterator it_span_end = it; it_span_end.nextStartOfSpan(); Inkscape::Text::Layout::OptionalTextTagAttrs attrs; text->layout.simulateLayoutUsingKerning(it, it_span_end, &attrs); // 'dx' and 'dy' attributes are used to simulated justified text. if (!text->is_horizontal()) { std::swap(attrs.dx, attrs.dy); } TextTagAttributes(attrs).writeTo(span_tspan); SPObject *source_obj = nullptr; Glib::ustring::iterator span_text_start_iter; text->layout.getSourceOfCharacter(it, &source_obj, &span_text_start_iter); // Set tspan style Glib::ustring style_text = (dynamic_cast(source_obj) ? source_obj->parent : source_obj) ->style->writeIfDiff(text->style); if (!style_text.empty()) { span_tspan->setAttributeOrRemoveIfEmpty("style", style_text); } // If this tspan has no attributes, discard it and add content directly to parent element. if (span_tspan->attributeList().empty()) { Inkscape::GC::release(span_tspan); span_tspan = line_tspan; } else { line_tspan->appendChild(span_tspan); Inkscape::GC::release(span_tspan); } // Add text node SPString *str = dynamic_cast(source_obj); if (str) { Glib::ustring *string = &(str->string); // TODO fixme: dangerous, unsafe premature-optimization SPObject *span_end_obj = nullptr; Glib::ustring::iterator span_text_end_iter; text->layout.getSourceOfCharacter(it_span_end, &span_end_obj, &span_text_end_iter); if (span_end_obj != source_obj) { if (it_span_end == text->layout.end()) { span_text_end_iter = span_text_start_iter; for (int i = text->layout.iteratorToCharIndex(it_span_end) - text->layout.iteratorToCharIndex(it) ; i ; --i) ++span_text_end_iter; } else span_text_end_iter = string->end(); // spans will never straddle a source boundary } if (span_text_start_iter != span_text_end_iter) { Glib::ustring new_string; while (span_text_start_iter != span_text_end_iter) new_string += *span_text_start_iter++; // grr. no substr() with iterators if (it == it_last_span && trim) { // Found last span in line const auto s = new_string.find_last_not_of(" \t"); // Any other white space characters needed? trailing_whitespace = new_string.substr(s+1, new_string.length()); new_string.erase(s+1); } Inkscape::XML::Node *new_text = repr->document()->createTextNode(new_string.c_str()); span_tspan->appendChild(new_text); Inkscape::GC::release(new_text); // std::cout << " new_string: |" << new_string << "|" << std::endl; } } it = it_span_end; } // Add line tspan to document repr->appendChild(line_tspan); Inkscape::GC::release(line_tspan); // For center and end justified text, we need to remove any spaces and put them // into a separate tspan (alignment is done by "text chunk" and spaces at ends of // line will mess this up). if (trim && trailing_whitespace.length() != 0) { Inkscape::XML::Node *space_tspan = repr->document()->createElement("svg:tspan"); // Set either 'x' or 'y' to force a new text chunk. To do: this really should // be positioned at the end of the line (overhanging). if (text->is_horizontal()) { space_tspan->setAttributeSvgDouble("y", line_y); } else { space_tspan->setAttributeSvgDouble("x", line_x); } Inkscape::XML::Node *space = repr->document()->createTextNode(trailing_whitespace.c_str()); space_tspan->appendChild(space); Inkscape::GC::release(space); line_tspan->appendChild(space_tspan); Inkscape::GC::release(space_tspan); } } for (auto i: old_children) { repr->removeChild (i); } text->setHidden(was_hidden); return; // No need to look at children of } for ( Node *child = repr->firstChild(); child; child = child->next() ) { insert_text_fallback (child, original_doc, defs); } } } static void insert_mesh_polyfill( Inkscape::XML::Node *repr ) { if (repr) { Inkscape::XML::Node *defs = sp_repr_lookup_name (repr, "svg:defs"); if (defs == nullptr) { // We always put meshes in , no defs -> no mesh. return; } bool has_mesh = false; for ( Node *child = defs->firstChild(); child; child = child->next() ) { if (strncmp("svg:meshgradient", child->name(), 16) == 0) { has_mesh = true; break; } } Inkscape::XML::Node *script = sp_repr_lookup_child (repr, "id", "mesh_polyfill"); if (has_mesh && script == nullptr) { script = repr->document()->createElement("svg:script"); script->setAttribute ("id", "mesh_polyfill"); script->setAttribute ("type", "text/javascript"); repr->root()->appendChild(script); // Must be last // Insert JavaScript via raw string literal. Glib::ustring js = #include "polyfill/mesh_compressed.include" ; Inkscape::XML::Node *script_text = repr->document()->createTextNode(js.c_str()); script->appendChild(script_text); } } } static void insert_hatch_polyfill( Inkscape::XML::Node *repr ) { if (repr) { Inkscape::XML::Node *defs = sp_repr_lookup_name (repr, "svg:defs"); if (defs == nullptr) { // We always put meshes in , no defs -> no mesh. return; } bool has_hatch = false; for ( Node *child = defs->firstChild(); child; child = child->next() ) { if (strncmp("svg:hatch", child->name(), 16) == 0) { has_hatch = true; break; } } Inkscape::XML::Node *script = sp_repr_lookup_child (repr, "id", "hatch_polyfill"); if (has_hatch && script == nullptr) { script = repr->document()->createElement("svg:script"); script->setAttribute ("id", "hatch_polyfill"); script->setAttribute ("type", "text/javascript"); repr->root()->appendChild(script); // Must be last // Insert JavaScript via raw string literal. Glib::ustring js = #include "polyfill/hatch_compressed.include" ; Inkscape::XML::Node *script_text = repr->document()->createTextNode(js.c_str()); script->appendChild(script_text); } } } /* * Recursively transform SVG 2 to SVG 1.1, if possible. */ static void transform_2_to_1( Inkscape::XML::Node *repr, Inkscape::XML::Node *defs = nullptr ) { if (repr) { // std::cout << "transform_2_to_1: " << repr->name() << std::endl; // Things we do once per node. ----------------------- // Find defs, if does not exist, create. if (defs == nullptr) { defs = sp_repr_lookup_name (repr, "svg:defs"); } if (defs == nullptr) { defs = repr->document()->createElement("svg:defs"); repr->root()->addChild(defs, nullptr); } // Find style. SPCSSAttr* css = sp_repr_css_attr ( repr, "style" ); Inkscape::Preferences *prefs = Inkscape::Preferences::get(); // Individual items ---------------------------------- // SVG 2 marker attribute orient:auto-start-reverse: if ( prefs->getBool("/options/svgexport/marker_autostartreverse", false) ) { // Do "marker-start" first for efficiency reasons. remove_marker_auto_start_reverse(repr, defs, css, "marker-start"); remove_marker_auto_start_reverse(repr, defs, css, "marker"); } // SVG 2 paint values 'context-fill', 'context-stroke': if ( prefs->getBool("/options/svgexport/marker_contextpaint", false) ) { remove_marker_context_paint(repr, defs); } // *** To Do *** // Context fill & stroke outside of markers // Paint-Order // Meshes // Hatches for ( Node *child = repr->firstChild(); child; child = child->next() ) { transform_2_to_1 (child, defs); } sp_repr_css_attr_unref(css); } } /** \return None \brief What would an SVG editor be without loading/saving SVG files. This function sets that up. For each module there is a call to Inkscape::Extension::build_from_mem with a rather large XML file passed in. This is a constant string that describes the module. At the end of this call a module is returned that is basically filled out. The one thing that it doesn't have is the key function for the operation. And that is linked at the end of each call. */ void Svg::init() { // clang-format off /* SVG in */ Inkscape::Extension::build_from_mem( "\n" "" N_("SVG Input") "\n" "" SP_MODULE_KEY_INPUT_SVG "\n" SVG_COMMON_INPUT_PARAMS "\n" ".svg\n" "image/svg+xml\n" "" N_("Scalable Vector Graphic (*.svg)") "\n" "" N_("Inkscape native file format and W3C standard") "\n" "\n" "", new Svg()); /* SVG out Inkscape */ Inkscape::Extension::build_from_mem( "\n" "" N_("SVG Output Inkscape") "\n" "" SP_MODULE_KEY_OUTPUT_SVG_INKSCAPE "\n" "\n" ".svg\n" "image/x-inkscape-svg\n" "" N_("Inkscape SVG (*.svg)") "\n" "" N_("SVG format with Inkscape extensions") "\n" "false\n" "\n" "", new Svg()); /* SVG out */ Inkscape::Extension::build_from_mem( "\n" "" N_("SVG Output") "\n" "" SP_MODULE_KEY_OUTPUT_SVG "\n" "\n" ".svg\n" "image/svg+xml\n" "" N_("Plain SVG (*.svg)") "\n" "" N_("Scalable Vector Graphics format as defined by the W3C") "\n" "\n" "", new Svg()); // clang-format on return; } /** \return A new document just for you! \brief This function takes in a filename of a SVG document and turns it into a SPDocument. \param mod Module to use \param uri The path or URI to the file (UTF-8) This function is really simple, it just calls sp_document_new... That's BS, it does all kinds of things for importing documents that probably should be in a separate function. Most of the import code was copied from gdkpixpuf-input.cpp. */ SPDocument * Svg::open (Inkscape::Extension::Input *mod, const gchar *uri) { g_assert(mod != nullptr); // This is only used at the end... but it should go here once uri stuff is fixed. auto file = Gio::File::create_for_commandline_arg(uri); const auto path = file->get_path(); // Fixing this means fixing a whole string of things. // if (path.empty()) { // // We lied, the uri wasn't a uri, try as path. // file = Gio::File::create_for_path(uri); // } // std::cout << "Svg::open: uri in: " << uri << std::endl; // std::cout << " : uri: " << file->get_uri() << std::endl; // std::cout << " : scheme: " << file->get_uri_scheme() << std::endl; // std::cout << " : path: " << file->get_path() << std::endl; // std::cout << " : parse: " << file->get_parse_name() << std::endl; // std::cout << " : base: " << file->get_basename() << std::endl; Inkscape::Preferences *prefs = Inkscape::Preferences::get(); // Get import preferences. bool ask_svg = prefs->getBool( "/dialogs/import/ask_svg"); Glib::ustring import_mode_svg = prefs->getString("/dialogs/import/import_mode_svg"); Glib::ustring scale = prefs->getString("/dialogs/import/scale"); // If we popped up a window asking about import preferences, get values from // there and update preferences. if(mod->get_gui() && ask_svg) { ask_svg = !mod->get_param_bool("do_not_ask"); import_mode_svg = mod->get_param_optiongroup("import_mode_svg"); scale = mod->get_param_optiongroup("scale"); prefs->setBool( "/dialogs/import/ask_svg", ask_svg); prefs->setString("/dialogs/import/import_mode_svg", import_mode_svg ); prefs->setString("/dialogs/import/scale", scale ); } bool import = prefs->getBool("/options/onimport", false); bool import_pages = (import_mode_svg == "pages"); // Do we open a new svg instead of import? if (uri && import && import_mode_svg == "new") { prefs->setBool("/options/onimport", false); // set back to true in file_import static auto gapp = InkscapeApplication::instance()->gtk_app(); auto action = gapp->lookup_action("file-open-window"); auto file_dnd = Glib::Variant::create(uri); action->activate(file_dnd); return SPDocument::createNewDoc (nullptr, true, true); } // Do we "import" as ? if (import && import_mode_svg != "include" && !import_pages) { // We import! // New wrapper document. SPDocument * doc = SPDocument::createNewDoc (nullptr, true, true); // Imported document // SPDocument * ret = SPDocument::createNewDoc(file->get_uri().c_str(), true); SPDocument * ret = SPDocument::createNewDoc(uri, true); if (!ret) { return nullptr; } // What is display unit doing here? Glib::ustring display_unit = doc->getDisplayUnit()->abbr; double width = ret->getWidth().value(display_unit); double height = ret->getHeight().value(display_unit); if (width < 0 || height < 0) { return nullptr; } // Create image node Inkscape::XML::Document *xml_doc = doc->getReprDoc(); Inkscape::XML::Node *image_node = xml_doc->createElement("svg:image"); // Set default value as we honor "preserveAspectRatio". image_node->setAttribute("preserveAspectRatio", "none"); double svgdpi = mod->get_param_float("svgdpi"); image_node->setAttribute("inkscape:svg-dpi", Glib::ustring::format(svgdpi)); image_node->setAttribute("width", Glib::ustring::format(width)); image_node->setAttribute("height", Glib::ustring::format(height)); // This is actually "image-rendering" Glib::ustring scale = prefs->getString("/dialogs/import/scale"); if( scale != "auto") { SPCSSAttr *css = sp_repr_css_attr_new(); sp_repr_css_set_property(css, "image-rendering", scale.c_str()); sp_repr_css_set(image_node, css, "style"); sp_repr_css_attr_unref( css ); } // Do we embed or link? if (import_mode_svg == "embed") { std::unique_ptr pb(Inkscape::Pixbuf::create_from_file(uri, svgdpi)); if(pb) { sp_embed_svg(image_node, uri); } } else { // Convert filename to uri (why do we need to do this, we claimed it was already a uri). gchar* _uri = g_filename_to_uri(uri, nullptr, nullptr); if(_uri) { // if (strcmp(_uri, uri) != 0) { // std::cout << "Svg::open: _uri != uri! " << _uri << ":" << uri << std::endl; // } image_node->setAttribute("xlink:href", _uri); g_free(_uri); } else { image_node->setAttribute("xlink:href", uri); } } // Add the image to a layer. Inkscape::XML::Node *layer_node = xml_doc->createElement("svg:g"); layer_node->setAttribute("inkscape:groupmode", "layer"); layer_node->setAttribute("inkscape:label", "Image"); doc->getRoot()->appendChildRepr(layer_node); layer_node->appendChild(image_node); Inkscape::GC::release(image_node); Inkscape::GC::release(layer_node); fit_canvas_to_drawing(doc); // Set viewBox if it doesn't exist. What is display unit doing here? if (!doc->getRoot()->viewBox_set) { doc->setViewBox(Geom::Rect::from_xywh(0, 0, doc->getWidth().value(doc->getDisplayUnit()), doc->getHeight().value(doc->getDisplayUnit()))); } return doc; } // We are not importing as . Open as new document. // Try to open non-local file (when does this occur?). if (!file->get_uri_scheme().empty()) { if (path.empty()) { try { char *contents; gsize length; file->load_contents(contents, length); return SPDocument::createNewDocFromMem(contents, length, true); } catch (Gio::Error &e) { g_warning("Could not load contents of non-local URI %s\n", uri); return nullptr; } } else { // Do we ever get here and does this actually work? uri = path.c_str(); } } SPDocument *doc = SPDocument::createNewDoc(uri, true); // Convert single page docs into multi page mode, and visa-versa if // we are importing. We never change the mode for opening. if (doc && import) { doc->setPages(import_pages); } return doc; } /** \return None \brief This is the function that does all of the SVG saves in Inkscape. It detects whether it should do a Inkscape namespace save internally. \param mod Extension to use. \param doc Document to save. \param uri The filename to save the file to. This function first checks its parameters, and makes sure that we're getting good data. It also checks the module ID of the incoming module to figure out whether this save should include the Inkscape namespace stuff or not. The result of that comparison is stored in the exportExtensions variable. If there is not to be Inkscape name spaces a new document is created without. (I think, I'm not sure on this code) All of the internally referenced imageins are also set to relative paths in the file. And the file is saved. This really needs to be fleshed out more, but I don't quite understand all of this code. I just stole it. */ void Svg::save(Inkscape::Extension::Output *mod, SPDocument *doc, gchar const *filename) { g_return_if_fail(doc != nullptr); g_return_if_fail(filename != nullptr); Inkscape::XML::Document *rdoc = doc->getReprDoc(); const SPDocument *original_doc = doc->getOriginalDocument(); bool const exportExtensions = ( !mod->get_id() || !strcmp (mod->get_id(), SP_MODULE_KEY_OUTPUT_SVG_INKSCAPE) || !strcmp (mod->get_id(), SP_MODULE_KEY_OUTPUT_SVGZ_INKSCAPE)); Inkscape::Preferences *prefs = Inkscape::Preferences::get(); bool const transform_2_to_1_flag = prefs->getBool("/dialogs/save_as/enable_svgexport", false); bool const insert_text_fallback_flag = prefs->getBool("/options/svgexport/text_insertfallback", true); bool const insert_mesh_polyfill_flag = prefs->getBool("/options/svgexport/mesh_insertpolyfill", true); bool const insert_hatch_polyfill_flag = prefs->getBool("/options/svgexport/hatch_insertpolyfill", true); // We used to copy the svg here if there was modification, but no need now // We copy the svg document for ALL exports and saves and the extensions can // decide what to do without fear. // We prune the in-use document and deliberately loose data, because there // is no known use for this data at the present time. pruneProprietaryGarbage(rdoc->root()); // Start off with a svg 2.0 document rdoc->setAttribute("standalone", "no"); rdoc->setAttribute("version", "2.0"); if (!exportExtensions) { pruneExtendedNamespaces(rdoc->root()); } if (transform_2_to_1_flag) { transform_2_to_1 (rdoc->root()); rdoc->setAttribute("version", "1.1"); } if (insert_text_fallback_flag && original_doc) { insert_text_fallback (rdoc->root(), original_doc); } if (insert_mesh_polyfill_flag) { insert_mesh_polyfill (rdoc->root()); } if (insert_hatch_polyfill_flag) { insert_hatch_polyfill (rdoc->root()); } if (!sp_repr_save_rebased_file(rdoc, filename, SP_SVG_NS_URI, doc->getDocumentBase(), // m_detachbase ? nullptr : filename)) { throw Inkscape::Extension::Output::save_failed(); } } } } } /* namespace inkscape, module, implementation */ /* Local Variables: mode:c++ c-file-style:"stroustrup" c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) indent-tabs-mode:nil fill-column:99 End: */ // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :