diff options
Diffstat (limited to 'src/svg_import_util.cpp')
| -rw-r--r-- | src/svg_import_util.cpp | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/src/svg_import_util.cpp b/src/svg_import_util.cpp deleted file mode 100644 index efa7701..0000000 --- a/src/svg_import_util.cpp +++ /dev/null @@ -1,123 +0,0 @@ -/* - * This file is part of gerbolyze, a vector image preprocessing toolchain - * Copyright (C) 2021 Jan Sebastian Götte <gerbolyze@jaseg.de> - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU Affero General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Affero General Public License for more details. - * - * You should have received a copy of the GNU Affero General Public License - * along with this program. If not, see <https://www.gnu.org/licenses/>. - */ - -#include <cmath> -#include "base64.h" -#include "svg_import_util.h" - -using namespace std; - -void gerbolyze::print_matrix(cairo_t *cr, bool print_examples) { - cairo_matrix_t mat; - cairo_get_matrix(cr, &mat); - cerr << " xform matrix = { xx=" << mat.xx << ", yx=" << mat.yx << ", xy=" << mat.xy << ", yy=" << mat.yy << ", x0=" << mat.x0 << ", y0=" << mat.y0 << " }" << endl; - if (print_examples) { - double x=0, y=0; - cairo_user_to_device(cr, &x, &y); - cerr << " (0, 0) -> (" << x << ", " << y << ")" << endl; - x = 1, y = 0; - cairo_user_to_device(cr, &x, &y); - cerr << " (1, 0) -> (" << x << ", " << y << ")" << endl; - x = 0, y = 1; - cairo_user_to_device(cr, &x, &y); - cerr << " (0, 1) -> (" << x << ", " << y << ")" << endl; - x = 1, y = 1; - cairo_user_to_device(cr, &x, &y); - cerr << " (1, 1) -> (" << x << ", " << y << ")" << endl; - } -} - -/* Read a double value formatted like usvg formats doubles from an SVG attribute */ -double gerbolyze::usvg_double_attr(const pugi::xml_node &node, const char *attr, double default_value) { - const auto *val = node.attribute(attr).value(); - if (*val == '\0') - return default_value; - - return atof(val); -} - -/* Read an url from an usvg attribute */ -string gerbolyze::usvg_id_url(string attr) { - if (attr.rfind("url(#", 0) == string::npos) - return string(); - - attr = attr.substr(strlen("url(#")); - attr = attr.substr(0, attr.size()-1); - return attr; -} - -gerbolyze::RelativeUnits gerbolyze::map_str_to_units(string str, gerbolyze::RelativeUnits default_val) { - if (str == "objectBoundingBox") - return SVG_ObjectBoundingBox; - else if (str == "userSpaceOnUse") - return SVG_UserSpaceOnUse; - return default_val; -} - -void gerbolyze::load_cairo_matrix_from_svg(const string &transform, cairo_matrix_t &mat) { - if (transform.empty()) { - cairo_matrix_init_identity(&mat); - return; - } - - string start("matrix("); - assert(transform.substr(0, start.length()) == start); - assert(transform.back() == ')'); - const string &foo = transform.substr(start.length(), transform.length()); - const string &bar = foo.substr(0, foo.length() - 1); - - istringstream xform(bar); - - double a, c, e, - b, d, f; - xform >> a >> b >> c >> d >> e >> f; - assert(!xform.fail()); - - cairo_matrix_init(&mat, a, b, c, d, e, f); -} - -void gerbolyze::apply_cairo_transform_from_svg(cairo_t *cr, const string &transform) { - cairo_matrix_t mat; - load_cairo_matrix_from_svg(transform, mat); - cairo_transform(cr, &mat); /* or cairo_transform? */ -} - -/* Cf. https://tools.ietf.org/html/rfc2397 */ -string gerbolyze::parse_data_iri(const string &data_url) { - if (data_url.rfind("data:", 0) == string::npos) /* check if url starts with "data:" */ - return string(); - - size_t foo = data_url.find("base64,"); - if (foo == string::npos) /* check if this is actually a data URL */ - return string(); - - size_t b64_begin = data_url.find_first_not_of(" ", foo + strlen("base64,")); - assert(b64_begin != string::npos); - - return base64_decode(data_url.substr(b64_begin)); -} - -/* for debug svg output */ -void gerbolyze::apply_viewport_matrix(cairo_t *cr, cairo_matrix_t &viewport_matrix) { - /* Multiply viewport matrix *from the left*, i.e. as if it had been applied *before* the currently set matrix. */ - cairo_matrix_t old_matrix; - cairo_get_matrix(cr, &old_matrix); - cairo_set_matrix(cr, &viewport_matrix); - cairo_transform(cr, &old_matrix); -} - |