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Diffstat (limited to 'src/io/file-export-cmd.cpp')
| -rw-r--r-- | src/io/file-export-cmd.cpp | 909 |
1 files changed, 909 insertions, 0 deletions
diff --git a/src/io/file-export-cmd.cpp b/src/io/file-export-cmd.cpp new file mode 100644 index 0000000..d2c898d --- /dev/null +++ b/src/io/file-export-cmd.cpp @@ -0,0 +1,909 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * File export from the command line. This code, greatly modified, use to be in main.cpp. It should + * be replaced by code shared with the file dialog (Gio::Actions?). + * + * Copyright (C) 2018 Tavmjong Bah + * + * Git blame shows that bulia byak is the main author of the original export code from + * main.cpp. Other authors of note include Nicolas Dufour, Vinicius dos Santos Oliveira, and Bob + * Jamison; none of whom bothered to add their names to the copyright of main.cc. + * + * The contents of this file may be used under the GNU General Public License Version 2 or later. + * + */ + +#include "file-export-cmd.h" + +#include <boost/algorithm/string.hpp> +#include <png.h> // PNG export + +#include "document.h" +#include "object/object-set.h" +#include "object/sp-item.h" +#include "object/sp-root.h" +#include "object/sp-text.h" +#include "object/sp-flowtext.h" +#include "object/sp-namedview.h" +#include "object/sp-object-group.h" +#include "path-chemistry.h" // sp_item_list_to_curves +#include "text-editing.h" // te_update_layout_now_recursive +#include "selection-chemistry.h" // fit_canvas_to_drawing +#include "svg/svg-color.h" // Background color +#include "helper/png-write.h" // PNG Export + +#include "extension/extension.h" +#include "extension/system.h" +#include "extension/db.h" +#include "extension/output.h" +#include "extension/init.h" + + +// Temporary dependency : once all compilers we want to support have support for +// C++17 std::filesystem (with #include <filesystem> ) then we drop this dep +// (Dev meeting, 2020-09-25) + +#ifdef G_OS_WIN32 +#include <filesystem> +namespace filesystem = std::filesystem; +#else +#include <boost/filesystem.hpp> +namespace filesystem = boost::filesystem; +#endif + +InkFileExportCmd::InkFileExportCmd() + : export_overwrite(false) + , export_area_drawing(false) + , export_area_page(false) + , export_margin(0) + , export_area_snap(false) + , export_use_hints(false) + , export_width(0) + , export_height(0) + , export_dpi(0) + , export_ignore_filters(false) + , export_text_to_path(false) + , export_ps_level(3) + , export_pdf_level("1.5") + , export_latex(false) + , export_id_only(false) + , export_background_opacity(-1) // default is unset != actively set to 0 + , export_plain_svg(false) +{ +} + +void +InkFileExportCmd::do_export(SPDocument* doc, std::string filename_in) +{ + std::string export_type_filename; + std::vector<Glib::ustring> export_type_list; + + // Get export type from filename supplied with --export-filename + if (!export_filename.empty() && export_filename != "-") { +#ifdef G_OS_WIN32 + auto fn = filesystem::u8path(export_filename); +#else + auto fn = filesystem::path(export_filename); +#endif + if (!fn.has_extension()) { + if (export_type.empty() && export_extension.empty()) { + std::cerr << "InkFileExportCmd::do_export: No export type specified. " + << "Append a supported file extension to filename provided with --export-filename or " + << "provide one or more extensions separately using --export-type" << std::endl; + return; + } else { + // no extension is fine if --export-type is given + // explicitly stated extensions are handled later + } + } else { + export_type_filename = fn.extension().string().substr(1); + boost::algorithm::to_lower(export_type_filename); + export_filename = (fn.parent_path() / fn.stem()).string(); + } + } + + // Get export type(s) from string supplied with --export-type + if (!export_type.empty()) { + export_type_list = Glib::Regex::split_simple("[,;]", export_type); + } + + // Determine actual type(s) for export. + if (export_use_hints) { + // Override type if --export-use-hints is used (hints presume PNG export for now) + // TODO: There's actually no reason to presume. We could allow to export to any format using hints! + if (export_id.empty() && !export_area_drawing) { + std::cerr << "InkFileExportCmd::do_export: " + << "--export-use-hints can only be used with --export-id or --export-area-drawing." << std::endl; + return; + } + if (export_type_list.size() > 1 || (export_type_list.size() == 1 && export_type_list[0] != "png")) { + std::cerr << "InkFileExportCmd::do_export: --export-use-hints can only be used with PNG export! " + << "Ignoring --export-type=" << export_type << "." << std::endl; + } + if (!export_filename.empty()) { + std::cerr << "InkFileExportCmd::do_export: --export-filename is ignored when using --export-use-hints!" << std::endl; + } + export_type_list.clear(); + export_type_list.emplace_back("png"); + } else if (export_type_list.empty()) { + if (!export_type_filename.empty()) { + export_type_list.emplace_back(export_type_filename); // use extension from filename + } else if (!export_extension.empty()) { + // guess export type from extension + auto ext = + dynamic_cast<Inkscape::Extension::Output *>(Inkscape::Extension::db.get(export_extension.data())); + if (ext) { + export_type_list.emplace_back(std::string(ext->get_extension()).substr(1)); + } else { + std::cerr << "InkFileExportCmd::do_export: " + << "The supplied --export-extension was not found. Specify a file extension " + << "to get a list of available extensions for this file type."; + return; + } + } else { + export_type_list.emplace_back("svg"); // fall-back to SVG by default + } + } + // check if multiple export files are requested, but --export_extension was supplied + if (!export_extension.empty() && export_type_list.size() != 1) { + std::cerr + << "InkFileExportCmd::do_export: You may only specify one export type if --export-extension is supplied"; + return; + } + Inkscape::Extension::DB::OutputList extension_list; + Inkscape::Extension::db.get_output_list(extension_list); + + for (auto const &Type : export_type_list) { + // use lowercase type for following comparisons + auto type = Type.lowercase(); + g_info("exporting '%s' to type '%s'", filename_in.c_str(), type.c_str()); + + export_type_current = type; + + // Check for consistency between extension of --export-filename and --export-type if both are given + if (!export_type_filename.empty() && (type != export_type_filename)) { + std::cerr << "InkFileExportCmd::do_export: " + << "Ignoring extension of export filename (" << export_type_filename << ") " + << "as it does not match the current export type (" << type << ")." << std::endl; + } + bool export_extension_forced = !export_extension.empty(); + // For PNG export, there is no extension, so the method below can not be used. + if (type == "png") { + if (!export_extension_forced) { + do_export_png(doc, filename_in); + } else { + std::cerr << "InkFileExportCmd::do_export: " + << "The parameter --export-extension is invalid for PNG export" << std::endl; + } + continue; + } + // for SVG export, we let the do_export_svg function handle the selection of the extension, unless + // an extension ID was explicitly given. This makes handling of --export-plain-svg easier (which + // should also work when multiple file types are given, unlike --export-extension) + if (type == "svg" && !export_extension_forced) { + do_export_svg(doc, filename_in); + continue; + } + + bool extension_for_fn_exists = false; + bool exported = false; + // if no extension is found, the entire list of extensions is walked through, + // so we can use the same loop to construct the list of available formats for the error message + std::list<std::string> filetypes({".svg", ".png", ".ps", ".eps", ".pdf"}); + std::list<std::string> exts_for_fn; + for (auto oext : extension_list) { + if (oext->deactivated()) { + continue; + } + auto name = Glib::ustring(oext->get_extension()).lowercase(); + filetypes.emplace_back(name); + if (name == "." + type) { + extension_for_fn_exists = true; + exts_for_fn.emplace_back(oext->get_id()); + if (!export_extension_forced || + (export_extension == Glib::ustring(oext->get_id()).lowercase())) { + if (type == "svg") { + do_export_svg(doc, filename_in, *oext); + } else if (type == "ps") { + do_export_ps_pdf(doc, filename_in, "image/x-postscript", *oext); + } else if (type == "eps") { + do_export_ps_pdf(doc, filename_in, "image/x-e-postscript", *oext); + } else if (type == "pdf") { + do_export_ps_pdf(doc, filename_in, "application/pdf", *oext); + } else { + do_export_extension(doc, filename_in, oext); + } + exported = true; + break; + } + } + } + if (!exported) { + if (export_extension_forced && extension_for_fn_exists) { + // the located extension for this file type did not match the provided --export-extension parameter + std::cerr << "InkFileExportCmd::do_export: " + << "The supplied extension ID (" << export_extension + << ") does not match any of the extensions " + << "available for this file type." << std::endl + << "Supported IDs for this file type: ["; + copy(exts_for_fn.begin(), exts_for_fn.end(), std::ostream_iterator<std::string>(std::cerr, ", ")); + std::cerr << "\b\b]" << std::endl; + } else { + std::cerr << "InkFileExportCmd::do_export: Unknown export type: " << type << ". Allowed values: ["; + filetypes.sort(); + filetypes.unique(); + copy(filetypes.begin(), filetypes.end(), std::ostream_iterator<std::string>(std::cerr, ", ")); + std::cerr << "\b\b]" << std::endl; + } + } + } +} + +// File names use std::string. HTML5 and presumably SVG 2 allows UTF-8 characters. Do we need to convert "object_id" here? +std::string +InkFileExportCmd::get_filename_out(std::string filename_in, std::string object_id) +{ + // Pipe out + if (export_filename == "-") { + return "-"; + } + + auto const export_type_current_native = Glib::filename_from_utf8(export_type_current); + + // Use filename provided with --export-filename if given (and append proper extension). + if (!export_filename.empty()) { + return export_filename + "." + export_type_current_native; + } + + // Check for pipe + if (filename_in == "-") { + return "-"; + } + + // Construct output filename from input filename and export_type. + auto extension_pos = filename_in.find_last_of('.'); + if (extension_pos == std::string::npos) { + std::cerr << "InkFileExportCmd::get_filename_out: cannot determine input file type from filename extension: " << filename_in << std::endl; + return (std::string()); + } + + std::string extension = filename_in.substr(extension_pos+1); + if (export_overwrite && export_type_current_native == extension) { + return filename_in; + } else { + std::string tag; + if (export_type_current_native == extension) { + tag = "_out"; + } + if (!object_id.empty()) { + tag = "_" + object_id; + } + return filename_in.substr(0, extension_pos) + tag + "." + export_type_current_native; + } + + // We need a valid file name to write to unless we're using PNG export hints. + // if (!(export_type == "png" && export_use_hints)) { + + // // Check for file name. + // if (filename_out.empty()) { + // std::cerr << "InkFileExportCmd::do_export: Could not determine output file name!" << std::endl; + // return (std::string()); + // } + + // // Check if directory exists. + // std::string directory = Glib::path_get_dirname(filename_out); + // if (!Glib::file_test(directory, Glib::FILE_TEST_IS_DIR)) { + // std::cerr << "InkFileExportCmd::do_export: File path includes directory that does not exist! " << directory << std::endl; + // return (std::string()); + // } + // } +} +/** + * Perform an SVG export + * + * \param doc Document to export. + * \param filename_in Filename for export + */ +int InkFileExportCmd::do_export_svg(SPDocument *doc, std::string const &filename_in) +{ + Inkscape::Extension::Output *oext; + if (export_plain_svg) { + oext = + dynamic_cast<Inkscape::Extension::Output *>(Inkscape::Extension::db.get("org.inkscape.output.svg.plain")); + } else { + oext = dynamic_cast<Inkscape::Extension::Output *>( + Inkscape::Extension::db.get("org.inkscape.output.svg.inkscape")); + } + return do_export_svg(doc, filename_in, *oext); +} +/** + * Perform an SVG export + * + * \param doc Document to export. + * \param filename_in Filename for export + * \param extension Output extension used for exporting + */ +int InkFileExportCmd::do_export_svg(SPDocument *doc, std::string const &filename_in, + Inkscape::Extension::Output &extension) +{ + // Start with options that are once per document. + if (export_text_to_path) { + Inkscape::convert_text_to_curves(doc); + } + + if (export_margin != 0) { + gdouble margin = export_margin; + doc->ensureUpToDate(); + SPNamedView *nv; + Inkscape::XML::Node *nv_repr; + if ((nv = doc->getNamedView()) && (nv_repr = nv->getRepr())) { + nv_repr->setAttributeSvgDouble("fit-margin-top", margin); + nv_repr->setAttributeSvgDouble("fit-margin-left", margin); + nv_repr->setAttributeSvgDouble("fit-margin-right", margin); + nv_repr->setAttributeSvgDouble("fit-margin-bottom", margin); + } + } + + if (export_area_drawing) { + fit_canvas_to_drawing(doc, export_margin != 0 ? true : false); + } else if (export_area_page || export_id.empty() ) { + if (export_margin) { + doc->ensureUpToDate(); + doc->fitToRect(*(doc->preferredBounds()), true); + } + } + + + // Export each object in list (or root if empty). Use ';' so in future it could be possible to selected multiple objects to export together. + std::vector<Glib::ustring> objects = Glib::Regex::split_simple("\\s*;\\s*", export_id); + if (objects.empty()) { + objects.emplace_back(); // So we do loop at least once for root. + } + + for (auto object : objects) { + + std::string filename_out = get_filename_out(filename_in, Glib::filename_from_utf8(object)); + if (filename_out.empty()) { + return 1; + } + + if(!object.empty()) { + doc->ensureUpToDate(); + + // "crop" the document to the specified object, cleaning as we go. + SPObject *obj = doc->getObjectById(object); + if (obj == nullptr) { + std::cerr << "InkFileExportCmd::do_export_svg: Object " << object << " not found in document, nothing to export." << std::endl; + return 1; + } + if (export_id_only) { + // If -j then remove all other objects to complete the "crop" + doc->getRoot()->cropToObject(obj); + } + if (!(export_area_page || export_area_drawing)) { + Inkscape::ObjectSet s(doc); + s.set(obj); + s.fitCanvas(export_margin ? true : false); + } + } + g_assert(std::string(extension.get_extension()) == ".svg"); + try { + Inkscape::Extension::save(dynamic_cast<Inkscape::Extension::Extension *>(&extension), doc, + filename_out.c_str(), false, false, + export_plain_svg ? Inkscape::Extension::FILE_SAVE_METHOD_SAVE_COPY + : Inkscape::Extension::FILE_SAVE_METHOD_INKSCAPE_SVG); + } catch (Inkscape::Extension::Output::save_failed &e) { + std::cerr << "InkFileExportCmd::do_export_svg: Failed to save " << (export_plain_svg ? "" : "Inkscape") + << " SVG to: " << filename_out << std::endl; + return 1; + } + } + return 0; +} + +guint32 InkFileExportCmd::get_bgcolor(SPDocument *doc) { + guint32 bgcolor = 0x00000000; + if (!export_background.empty()) { + // override the page color + bgcolor = sp_svg_read_color(export_background.c_str(), 0xffffff00); + // default is opaque if a color is given on commandline + if (export_background_opacity < -.5 ) { + export_background_opacity = 255; + } + } else { + // read from namedview + Inkscape::XML::Node *nv = doc->getReprNamedView(); + if (nv && nv->attribute("pagecolor")){ + bgcolor = sp_svg_read_color(nv->attribute("pagecolor"), 0xffffff00); + } + } + + if (export_background_opacity > -.5) { // if the value is manually set + if (export_background_opacity > 1.0) { + float value = CLAMP (export_background_opacity, 1.0f, 255.0f); + bgcolor |= (guint32) floor(value); + } else { + float value = CLAMP (export_background_opacity, 0.0f, 1.0f); + bgcolor |= SP_COLOR_F_TO_U(value); + } + } else { + Inkscape::XML::Node *nv = doc->getReprNamedView(); + if (nv && nv->attribute("inkscape:pageopacity")){ + double opacity = nv->getAttributeDouble("inkscape:pageopacity", 1.0); + bgcolor |= SP_COLOR_F_TO_U(opacity); + } // else it's transparent + } + return bgcolor; +} + +/** + * Perform a PNG export + * + * \param doc Document to export. + * \param filename_in filename for export + */ +int +InkFileExportCmd::do_export_png(SPDocument *doc, std::string const &filename_in) +{ + bool filename_from_hint = false; + gdouble dpi = 0.0; + guint32 bgcolor = get_bgcolor(doc); + + auto prefs = Inkscape::Preferences::get(); + bool old_dither = prefs->getBool("/options/dithering/render", false); + prefs->setBool("/options/dithering/render", export_png_use_dithering); + + // Export each object in list (or root if empty). Use ';' so in future it could be possible to selected multiple objects to export together. + std::vector<Glib::ustring> objects = Glib::Regex::split_simple("\\s*;\\s*", export_id); + if (objects.empty()) { + objects.emplace_back(); // So we do loop at least once for root. + } + + for (auto object_id : objects) { + + std::string filename_out = get_filename_out(filename_in, Glib::filename_from_utf8(object_id)); + + std::vector<SPItem*> items; + + // Find export object. (Either root or object with specified id.) + SPObject *object = doc->getRoot(); + if (!object_id.empty()) { + object = doc->getObjectById(object_id); + } + + if (!object) { + std::cerr << "InkFileExport::do_export_png: " + << "Object with id=\"" << object_id + << "\" was not found in the document. Skipping." << std::endl; + continue; + } + + if (!SP_IS_ITEM (object)) { + std::cerr << "InkFileExportCmd::do_export_png: " + << "Object with id=\"" << object_id + << "\" is not a visible item. Skipping." << std::endl; + continue; + } + + items.push_back(SP_ITEM(object)); // There is only one item, why do this? + + if (export_id_only) { + std::cerr << "Exporting only object with id=\"" + << object_id << "\"; all other objects hidden." << std::endl; + } + + // Find file name and dpi from hints. + if (export_use_hints) { + + // Retrieve export filename hint. + const gchar *fn_hint = object->getRepr()->attribute("inkscape:export-filename"); + if (fn_hint) { + filename_out = fn_hint; + filename_from_hint = true; + } else { + std::cerr << "InkFileExport::do_export_png: " + << "Export filename hint not found for object " << object_id << ". Skipping." << std::endl; + continue; + } + + // Retrieve export dpi hint. Only xdpi as ydpi is always the same now. + const gchar *dpi_hint = object->getRepr()->attribute("inkscape:export-xdpi"); + if (dpi_hint) { + if (export_dpi || export_width || export_height) { + std::cerr << "InkFileExport::do_export_png: " + << "Using bitmap dimensions from the command line " + << "(--export-dpi, --export-width, or --export-height). " + << "DPI hint " << dpi_hint << " is ignored." << std::endl; + } else { + dpi = g_ascii_strtod(dpi_hint, nullptr); + } + } else { + std::cerr << "InkFileExport::do_export_png: " + << "Export DPI hint not found for the object." << std::endl; + } + } + + // ------------------------- File name ------------------------- + + // Check we have a filename. + if (filename_out.empty()) { + std::cerr << "InkFileExport::do_export_png: " + << "No valid export filename given and no filename hint. Skipping." << std::endl; + continue; + } + + if (filename_from_hint) { + //Make relative paths go from the document location, if possible: + if (!Glib::path_is_absolute(filename_out) && doc->getDocumentFilename()) { + std::string dirname = Glib::path_get_dirname(doc->getDocumentFilename()); + if (!dirname.empty()) { + filename_out = Glib::build_filename(dirname, filename_out); + } + } + } + + // Check if directory exists + std::string directory = Glib::path_get_dirname(filename_out); + if (!Glib::file_test(directory, Glib::FILE_TEST_IS_DIR)) { + std::cerr << "File path " << filename_out << " includes directory that doesn't exist. Skipping." << std::endl; + continue; + } + + // -------------------------- DPI ------------------------------- + + if (export_dpi != 0.0 && dpi == 0.0) { + dpi = export_dpi; + if ((dpi < 0.1) || (dpi > 10000.0)) { + std::cerr << "InkFileExport::do_export_png: " + << "DPI value " << export_dpi + << " out of range [0.1 - 10000.0]. Skipping."; + continue; + } + } + + // default dpi + if (dpi == 0.0) { + dpi = Inkscape::Util::Quantity::convert(1, "in", "px"); + } + + // ------------------------- Area ------------------------------- + + Geom::Rect area; + doc->ensureUpToDate(); + + // Three choices: 1. Command-line export_area 2. Page area 3. Drawing area + if (!export_area.empty()) { + + // Export area command-line + + /* Try to parse area (given in SVG pixels) */ + gdouble x0,y0,x1,y1; + if (sscanf(export_area.c_str(), "%lg:%lg:%lg:%lg", &x0, &y0, &x1, &y1) != 4) { + g_warning("Cannot parse export area '%s'; use 'x0:y0:x1:y1'. Nothing exported.", export_area.c_str()); + return 1; // If it fails once, it will fail for all objects. + } + area = Geom::Rect(Geom::Interval(x0,x1), Geom::Interval(y0,y1)); + + } else if (export_area_page || (!export_area_drawing && object_id.empty())) { + + // Export area page (explicit or if no object is given). + Geom::Point origin(doc->getRoot()->x.computed, doc->getRoot()->y.computed); + area = Geom::Rect(origin, origin + doc->getDimensions()); + + } else { + + // Export area drawing (explicit or if object is given). + Geom::OptRect areaMaybe = static_cast<SPItem *>(object)->documentVisualBounds(); + if (areaMaybe) { + area = *areaMaybe; + } else { + std::cerr << "InkFileExport::do_export_png: " + << "Unable to determine a valid bounding box. Skipping." << std::endl; + continue; + } + } + + if (export_area_snap) { + area = area.roundOutwards(); + } + // End finding area. + + // -------------------------- Width and Height --------------------------------- + + unsigned long int width = 0; + unsigned long int height = 0; + double xdpi = dpi; + double ydpi = dpi; + + if (export_height != 0) { + height = export_height; + if ((height < 1) || (height > PNG_UINT_31_MAX)) { + std::cerr << "InkFileExport::do_export_png: " + << "Export height " << height << " out of range (1 to " << PNG_UINT_31_MAX << ")" << std::endl; + continue; + } + ydpi = Inkscape::Util::Quantity::convert(height, "in", "px") / area.height(); + xdpi = ydpi; + dpi = ydpi; + } + + if (export_width != 0) { + width = export_width; + if ((width < 1) || (width > PNG_UINT_31_MAX)) { + std::cerr << "InkFileExport::do_export_png: " + << "Export width " << width << " out of range (1 to " << PNG_UINT_31_MAX << ")." << std::endl; + continue; + } + xdpi = Inkscape::Util::Quantity::convert(width, "in", "px") / area.width(); + ydpi = export_height ? ydpi : xdpi; + dpi = xdpi; + } + + if (width == 0) { + width = (unsigned long int) (Inkscape::Util::Quantity::convert(area.width(), "px", "in") * dpi + 0.5); + } + + if (height == 0) { + height = (unsigned long int) (Inkscape::Util::Quantity::convert(area.height(), "px", "in") * dpi + 0.5); + } + + if ((width < 1) || (height < 1) || (width > PNG_UINT_31_MAX) || (height > PNG_UINT_31_MAX)) { + std::cerr << "InkFileExport::do_export_png: Dimensions " << width << "x" << height << " are out of range (1 to " << PNG_UINT_31_MAX << ")." << std::endl; + continue; + } + + // -------------------------- Bit Depth and Color Type -------------------- + + int bit_depth = 8; // default of sp_export_png_file function + int color_type = PNG_COLOR_TYPE_RGB_ALPHA; // default of sp_export_png_file function + + if (!export_png_color_mode.empty()) { + // data as in ui/dialog/export.cpp: + const std::map<std::string, std::pair<int, int>> color_modes = { + {"Gray_1", {PNG_COLOR_TYPE_GRAY, 1}}, + {"Gray_2", {PNG_COLOR_TYPE_GRAY, 2}}, + {"Gray_4", {PNG_COLOR_TYPE_GRAY, 4}}, + {"Gray_8", {PNG_COLOR_TYPE_GRAY, 8}}, + {"Gray_16", {PNG_COLOR_TYPE_GRAY, 16}}, + {"RGB_8", {PNG_COLOR_TYPE_RGB, 8}}, + {"RGB_16", {PNG_COLOR_TYPE_RGB, 16}}, + {"GrayAlpha_8", {PNG_COLOR_TYPE_GRAY_ALPHA, 8}}, + {"GrayAlpha_16", {PNG_COLOR_TYPE_GRAY_ALPHA, 16}}, + {"RGBA_8", {PNG_COLOR_TYPE_RGB_ALPHA, 8}}, + {"RGBA_16", {PNG_COLOR_TYPE_RGB_ALPHA, 16}}, + }; + auto it = color_modes.find(export_png_color_mode); + if (it == color_modes.end()) { + std::cerr << "InkFileExport::do_export_png: " + << "Color mode " << export_png_color_mode << " is invalid. It must be one of Gray_1/Gray_2/Gray_4/Gray_8/Gray_16/RGB_8/RGB_16/GrayAlpha_8/GrayAlpha_16/RGBA_8/RGBA_16." << std::endl; + continue; + } else { + std::tie(color_type, bit_depth) = it->second; + } + } + + // ---------------------- Generate the PNG ------------------------------- +#ifdef DEBUG + std::cerr << "Background RRGGBBAA: " << std::hex << bgcolor << std::dec << std::endl; + std::cerr << "Area " + << area[Geom::X][0] << ":" << area[Geom::Y][0] << ":" + << area[Geom::X][1] << ":" << area[Geom::Y][1] << " exported to " + << width << " x " << height << " pixels (" << dpi << " dpi)" << std::endl; +#endif + + reverse(items.begin(),items.end()); // But there was only one item! + + if( sp_export_png_file(doc, filename_out.c_str(), area, width, height, xdpi, ydpi, + bgcolor, nullptr, nullptr, true, export_id_only ? items : std::vector<SPItem*>(), + false, color_type, bit_depth) == 1 ) { + } else { + std::cerr << "InkFileExport::do_export_png: Failed to export to " << filename_out << std::endl; + continue; + } + + } // End loop over objects. + prefs->setBool("/options/dithering/render", old_dither); + return 0; +} + + +/** + * Perform a PDF/PS/EPS export + * + * \param doc Document to export. + * \param filename File to write to. + * \param mime MIME type to export as. + */ +int +InkFileExportCmd::do_export_ps_pdf(SPDocument* doc, std::string const &filename_in, std::string const & mime_type) +{ + // Check if we support mime type. + Inkscape::Extension::DB::OutputList o; + Inkscape::Extension::db.get_output_list(o); + Inkscape::Extension::DB::OutputList::const_iterator i = o.begin(); + while (i != o.end() && strcmp( (*i)->get_mimetype(), mime_type.c_str() ) != 0) { + ++i; + } + + if (i == o.end()) { + std::cerr << "InkFileExportCmd::do_export_ps_pdf: Could not find an extension to export to MIME type: " << mime_type << std::endl; + return 1; + } + return do_export_ps_pdf(doc, filename_in, mime_type, *dynamic_cast<Inkscape::Extension::Output *>(*i)); +} + +/** + * Perform a PDF/PS/EPS export + * + * \param doc Document to export. + * \param filename File to write to. + * \param mime MIME type to export as. + * \param Extension used for exporting + */ +int InkFileExportCmd::do_export_ps_pdf(SPDocument *doc, std::string const &filename_in, std::string const & mime_type, + Inkscape::Extension::Output &extension) +{ + // check if the passed extension conforms to the mime type. + assert(std::string(extension.get_mimetype()) == mime_type); + // Start with options that are once per document. + + // Set export options. + if (export_text_to_path) { + extension.set_param_optiongroup("textToPath", "paths"); + } else if (export_latex) { + extension.set_param_optiongroup("textToPath", "LaTeX"); + } else { + extension.set_param_optiongroup("textToPath", "embed"); + } + + if (export_ignore_filters) { + extension.set_param_bool("blurToBitmap", false); + } else { + extension.set_param_bool("blurToBitmap", true); + + gdouble dpi = 96.0; + if (export_dpi) { + dpi = export_dpi; + if ((dpi < 1) || (dpi > 10000.0)) { + g_warning("DPI value %lf out of range [1 - 10000]. Using 96 dpi instead.", export_dpi); + dpi = 96; + } + } + + extension.set_param_int("resolution", (int)dpi); + } + + extension.set_param_float("bleed", export_margin); + + // handle --export-pdf-version + if (mime_type == "application/pdf") { + bool set_export_pdf_version_fail = true; + const gchar *pdfver_param_name = "PDFversion"; + if (!export_pdf_level.empty()) { + // combine "PDF " and the given command line + std::string version_gui_string = std::string("PDF-") + export_pdf_level.raw(); + try { + // first, check if the given pdf version is selectable in the ComboBox + if (extension.get_param_optiongroup_contains("PDFversion", version_gui_string.c_str())) { + extension.set_param_optiongroup(pdfver_param_name, version_gui_string.c_str()); + set_export_pdf_version_fail = false; + } else { + g_warning("Desired PDF export version \"%s\" not supported! Hint: input one of the versions found in the pdf export dialog e.g. \"1.4\".", + export_pdf_level.c_str()); + } + } catch (...) { + // can be thrown along the way: + // throw Extension::param_not_exist(); + // throw Extension::param_not_enum_param(); + g_warning("Parameter or Enum \"%s\" might not exist", pdfver_param_name); + } + } + + // set default pdf export version to 1.4, also if something went wrong + if(set_export_pdf_version_fail) { + extension.set_param_optiongroup(pdfver_param_name, "PDF-1.4"); + } + } + + if (mime_type == "image/x-postscript" || mime_type == "image/x-e-postscript") { + if ( export_ps_level < 2 || export_ps_level > 3 ) { + g_warning("Only supported PostScript levels are 2 and 3." + " Defaulting to 2."); + export_ps_level = 2; + } + + extension.set_param_optiongroup("PSlevel", (export_ps_level == 3) ? "PS3" : "PS2"); + } + + + // Export each object in list (or root if empty). Use ';' so in future it could be possible to selected multiple objects to export together. + std::vector<Glib::ustring> objects = Glib::Regex::split_simple("\\s*;\\s*", export_id); + if (objects.empty()) { + objects.emplace_back(); // So we do loop at least once for root. + } + + for (auto object : objects) { + + std::string filename_out = get_filename_out(filename_in, Glib::filename_from_utf8(object)); + if (filename_out.empty()) { + return 1; + } + + // Export only object with given id. + if (!object.empty()) { + SPObject *o = doc->getObjectById(object); + if (o == nullptr) { + std::cerr << "InkFileExportCmd::do_export_ps_pdf: Object " << object << " not found in document, nothing to export." << std::endl; + return 1; + } + extension.set_param_string("exportId", object.c_str()); + } else { + extension.set_param_string("exportId", ""); + } + + // Set export area. + if (export_area_page && export_area_drawing) { + std::cerr << "You cannot use --export-area-page and --export-area-drawing at the same time; only the former will take effect." << std::endl;; + export_area_drawing = false; + } + + if (export_area_drawing) { + extension.set_param_optiongroup("area", "drawing"); + } + + if (export_area_page) { + if (export_type == "eps") { + std::cerr << "EPS cannot have its bounding box extend beyond its content, so if your drawing is smaller than the page, --export-area-page will clip it to drawing." << std::endl; + } + extension.set_param_optiongroup("area", "page"); + } + + if (!export_area_drawing && !export_area_page) { + // Neither is set. + if (export_type == "eps" || !object.empty()) { + // Default to drawing for EPS or if object is specified (latter matches behavior for other export types). + extension.set_param_optiongroup("area", "drawing"); + } else { + extension.set_param_optiongroup("area", "page"); + } + } + + try { + extension.save(doc, filename_out.c_str()); + } catch(...) { + std::cerr << "Failed to save PS/EPS/PDF to: " << filename_out << std::endl; + return 1; + } + } + + return 0; +} + +/** + * Export a document using an export extension + * + * \param doc Document to export. + * \param filename to export to. + * \param output extension used for export + */ +int InkFileExportCmd::do_export_extension(SPDocument *doc, std::string const &filename_in, + Inkscape::Extension::Output *extension) +{ + std::string filename_out = get_filename_out(filename_in); + if (extension) { + extension->set_state(Inkscape::Extension::Extension::STATE_LOADED); + extension->save(doc, filename_out.c_str()); + } + return 0; +} + +/* + 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 : |