From cca66b9ec4e494c1d919bff0f71a820d8afab1fa Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:24:48 +0200 Subject: Adding upstream version 1.2.2. Signed-off-by: Daniel Baumann --- src/extension/internal/cairo-ps-out.cpp | 415 ++++++++++++++++++++++++++++++++ 1 file changed, 415 insertions(+) create mode 100644 src/extension/internal/cairo-ps-out.cpp (limited to 'src/extension/internal/cairo-ps-out.cpp') diff --git a/src/extension/internal/cairo-ps-out.cpp b/src/extension/internal/cairo-ps-out.cpp new file mode 100644 index 0000000..abf76a9 --- /dev/null +++ b/src/extension/internal/cairo-ps-out.cpp @@ -0,0 +1,415 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * A quick hack to use the Cairo renderer to write out a file. This + * then makes 'save as...' PS. + * + * Authors: + * Ted Gould + * Ulf Erikson + * Adib Taraben + * Jon A. Cruz + * Abhishek Sharma + * + * Copyright (C) 2004-2006 Authors + * + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ + +#include +#ifdef CAIRO_HAS_PS_SURFACE + +#include "cairo-ps.h" +#include "cairo-ps-out.h" +#include "cairo-render-context.h" +#include "cairo-renderer.h" +#include "latex-text-renderer.h" +#include "path-chemistry.h" +#include +#include "extension/system.h" +#include "extension/print.h" +#include "extension/db.h" +#include "extension/output.h" +#include "display/drawing.h" + +#include "display/curve.h" + +#include "object/sp-item.h" +#include "object/sp-root.h" + +#include "io/sys.h" +#include "document.h" + +namespace Inkscape { +namespace Extension { +namespace Internal { + +bool CairoPsOutput::check (Inkscape::Extension::Extension * /*module*/) +{ + if (nullptr == Inkscape::Extension::db.get(SP_MODULE_KEY_PRINT_CAIRO_PS)) { + return FALSE; + } else { + return TRUE; + } +} + +bool CairoEpsOutput::check (Inkscape::Extension::Extension * /*module*/) +{ + if (nullptr == Inkscape::Extension::db.get(SP_MODULE_KEY_PRINT_CAIRO_EPS)) { + return FALSE; + } else { + return TRUE; + } +} + +static bool +ps_print_document_to_file(SPDocument *doc, gchar const *filename, unsigned int level, bool texttopath, bool omittext, + bool filtertobitmap, int resolution, const gchar * const exportId, bool exportDrawing, bool exportCanvas, double bleedmargin_px, bool eps = false) +{ + if (texttopath) { + assert(!omittext); + // Cairo's text-to-path method has numerical precision and font matching + // issues (https://gitlab.com/inkscape/inkscape/-/issues/1979). + // We get better results by using Inkscape's Object-to-Path method. + Inkscape::convert_text_to_curves(doc); + } + + doc->ensureUpToDate(); + + SPRoot *root = doc->getRoot(); + SPItem *base = nullptr; + + bool pageBoundingBox = TRUE; + if (exportId && strcmp(exportId, "")) { + // we want to export the given item only + base = SP_ITEM(doc->getObjectById(exportId)); + if (!base) { + throw Inkscape::Extension::Output::export_id_not_found(exportId); + } + root->cropToObject(base); // TODO: This is inconsistent in CLI (should only happen for --export-id-only) + pageBoundingBox = exportCanvas; + } + else { + // we want to export the entire document from root + base = root; + pageBoundingBox = !exportDrawing; + } + + if (!base) + return false; + + Inkscape::Drawing drawing; + unsigned dkey = SPItem::display_key_new(1); + root->invoke_show(drawing, dkey, SP_ITEM_SHOW_DISPLAY); + + /* Create renderer and context */ + CairoRenderer *renderer = new CairoRenderer(); + CairoRenderContext *ctx = renderer->createContext(); + ctx->setPSLevel(level); + ctx->setEPS(eps); + ctx->setTextToPath(texttopath); + ctx->setOmitText(omittext); + ctx->setFilterToBitmap(filtertobitmap); + ctx->setBitmapResolution(resolution); + + bool ret = ctx->setPsTarget(filename); + if(ret) { + /* Render document */ + ret = renderer->setupDocument(ctx, doc, pageBoundingBox, bleedmargin_px, base); + if (ret) { + renderer->renderItem(ctx, root); + ret = ctx->finish(); + } + } + + root->invoke_hide(dkey); + + renderer->destroyContext(ctx); + delete renderer; + + return ret; +} + + +/** + \brief This function calls the output module with the filename + \param mod unused + \param doc Document to be saved + \param filename Filename to save to (probably will end in .ps) +*/ +void +CairoPsOutput::save(Inkscape::Extension::Output *mod, SPDocument *doc, gchar const *filename) +{ + Inkscape::Extension::Extension * ext; + unsigned int ret; + + ext = Inkscape::Extension::db.get(SP_MODULE_KEY_PRINT_CAIRO_PS); + if (ext == nullptr) + return; + + int level = CAIRO_PS_LEVEL_2; + try { + const gchar *new_level = mod->get_param_optiongroup("PSlevel"); + if((new_level != nullptr) && (g_ascii_strcasecmp("PS3", new_level) == 0)) { + level = CAIRO_PS_LEVEL_3; + } + } catch(...) {} + + bool new_textToPath = FALSE; + try { + new_textToPath = (strcmp(mod->get_param_optiongroup("textToPath"), "paths") == 0); + } catch(...) {} + + bool new_textToLaTeX = FALSE; + try { + new_textToLaTeX = (strcmp(mod->get_param_optiongroup("textToPath"), "LaTeX") == 0); + } + catch(...) { + g_warning("Parameter might not exist"); + } + + bool new_blurToBitmap = FALSE; + try { + new_blurToBitmap = mod->get_param_bool("blurToBitmap"); + } catch(...) {} + + int new_bitmapResolution = 72; + try { + new_bitmapResolution = mod->get_param_int("resolution"); + } catch(...) {} + + bool new_areaPage = true; + try { + new_areaPage = (strcmp(mod->get_param_optiongroup("area"), "page") == 0); + } catch(...) {} + + bool new_areaDrawing = !new_areaPage; + + double bleedmargin_px = 0.; + try { + bleedmargin_px = mod->get_param_float("bleed"); + } catch(...) {} + + const gchar *new_exportId = nullptr; + try { + new_exportId = mod->get_param_string("exportId"); + } catch(...) {} + + // Create PS + { + gchar * final_name; + final_name = g_strdup_printf("> %s", filename); + ret = ps_print_document_to_file(doc, final_name, level, new_textToPath, + new_textToLaTeX, new_blurToBitmap, + new_bitmapResolution, new_exportId, + new_areaDrawing, new_areaPage, + bleedmargin_px); + g_free(final_name); + + if (!ret) + throw Inkscape::Extension::Output::save_failed(); + } + + // Create LaTeX file (if requested) + if (new_textToLaTeX) { + ret = latex_render_document_text_to_file(doc, filename, new_exportId, new_areaDrawing, new_areaPage, 0., false); + + if (!ret) + throw Inkscape::Extension::Output::save_failed(); + } +} + + +/** + \brief This function calls the output module with the filename + \param mod unused + \param doc Document to be saved + \param filename Filename to save to (probably will end in .ps) +*/ +void +CairoEpsOutput::save(Inkscape::Extension::Output *mod, SPDocument *doc, gchar const *filename) +{ + Inkscape::Extension::Extension * ext; + unsigned int ret; + + ext = Inkscape::Extension::db.get(SP_MODULE_KEY_PRINT_CAIRO_EPS); + if (ext == nullptr) + return; + + int level = CAIRO_PS_LEVEL_2; + try { + const gchar *new_level = mod->get_param_optiongroup("PSlevel"); + if((new_level != nullptr) && (g_ascii_strcasecmp("PS3", new_level) == 0)) { + level = CAIRO_PS_LEVEL_3; + } + } catch(...) {} + + bool new_textToPath = FALSE; + try { + new_textToPath = (strcmp(mod->get_param_optiongroup("textToPath"), "paths") == 0); + } catch(...) {} + + bool new_textToLaTeX = FALSE; + try { + new_textToLaTeX = (strcmp(mod->get_param_optiongroup("textToPath"), "LaTeX") == 0); + } + catch(...) { + g_warning("Parameter might not exist"); + } + + bool new_blurToBitmap = FALSE; + try { + new_blurToBitmap = mod->get_param_bool("blurToBitmap"); + } catch(...) {} + + int new_bitmapResolution = 72; + try { + new_bitmapResolution = mod->get_param_int("resolution"); + } catch(...) {} + + bool new_areaPage = true; + try { + new_areaPage = (strcmp(mod->get_param_optiongroup("area"), "page") == 0); + } catch(...) {} + + bool new_areaDrawing = !new_areaPage; + + double bleedmargin_px = 0.; + try { + bleedmargin_px = mod->get_param_float("bleed"); + } catch(...) {} + + const gchar *new_exportId = nullptr; + try { + new_exportId = mod->get_param_string("exportId"); + } catch(...) {} + + // Create EPS + { + gchar * final_name; + final_name = g_strdup_printf("> %s", filename); + ret = ps_print_document_to_file(doc, final_name, level, new_textToPath, + new_textToLaTeX, new_blurToBitmap, + new_bitmapResolution, new_exportId, + new_areaDrawing, new_areaPage, + bleedmargin_px, true); + g_free(final_name); + + if (!ret) + throw Inkscape::Extension::Output::save_failed(); + } + + // Create LaTeX file (if requested) + if (new_textToLaTeX) { + ret = latex_render_document_text_to_file(doc, filename, new_exportId, new_areaDrawing, new_areaPage, 0., false); + + if (!ret) + throw Inkscape::Extension::Output::save_failed(); + } +} + + +bool +CairoPsOutput::textToPath(Inkscape::Extension::Print * ext) +{ + return ext->get_param_bool("textToPath"); +} + +bool +CairoEpsOutput::textToPath(Inkscape::Extension::Print * ext) +{ + return ext->get_param_bool("textToPath"); +} + +#include "clear-n_.h" + +/** + \brief A function allocate a copy of this function. + + This is the definition of Cairo PS out. This function just + calls the extension system with the memory allocated XML that + describes the data. +*/ +void +CairoPsOutput::init () +{ + // clang-format off + Inkscape::Extension::build_from_mem( + "\n" + "" N_("PostScript") "\n" + "" SP_MODULE_KEY_PRINT_CAIRO_PS "\n" + "\n" + "\n" + "\n" + "\n" + "\n" + "\n" + "\n" + "\n" + "\n" + "true\n" + "96\n" + "\n" + "" + "" + "" + "0\n" + "\n" + "\n" + ".ps\n" + "image/x-postscript\n" + "" N_("PostScript (*.ps)") "\n" + "" N_("PostScript File") "\n" + "\n" + "", new CairoPsOutput()); + // clang-format on + + return; +} + +/** + \brief A function allocate a copy of this function. + + This is the definition of Cairo EPS out. This function just + calls the extension system with the memory allocated XML that + describes the data. +*/ +void +CairoEpsOutput::init () +{ + // clang-format off + Inkscape::Extension::build_from_mem( + "\n" + "" N_("Encapsulated PostScript") "\n" + "" SP_MODULE_KEY_PRINT_CAIRO_EPS "\n" + "\n" + "\n" + "\n" + "\n" + "\n" + "\n" + "\n" + "\n" + "\n" + "true\n" + "96\n" + "\n" + "" + "" + "" + "0\n" + "\n" + "\n" + ".eps\n" + "image/x-e-postscript\n" + "" N_("Encapsulated PostScript (*.eps)") "\n" + "" N_("Encapsulated PostScript File") "\n" + "\n" + "", new CairoEpsOutput()); + // clang-format on + + return; +} + +} } } /* namespace Inkscape, Extension, Implementation */ + +#endif /* HAVE_CAIRO_PDF */ -- cgit v1.2.3