summaryrefslogtreecommitdiff
path: root/dviware/dvisvgm/src/optimizer/SVGOptimizer.cpp
diff options
context:
space:
mode:
authorNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
committerNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
commite0c6872cf40896c7be36b11dcc744620f10adf1d (patch)
tree60335e10d2f4354b0674ec22d7b53f0f8abee672 /dviware/dvisvgm/src/optimizer/SVGOptimizer.cpp
Initial commit
Diffstat (limited to 'dviware/dvisvgm/src/optimizer/SVGOptimizer.cpp')
-rw-r--r--dviware/dvisvgm/src/optimizer/SVGOptimizer.cpp105
1 files changed, 105 insertions, 0 deletions
diff --git a/dviware/dvisvgm/src/optimizer/SVGOptimizer.cpp b/dviware/dvisvgm/src/optimizer/SVGOptimizer.cpp
new file mode 100644
index 0000000000..31cfeff6ff
--- /dev/null
+++ b/dviware/dvisvgm/src/optimizer/SVGOptimizer.cpp
@@ -0,0 +1,105 @@
+/*************************************************************************
+** SVGOptimizer.cpp **
+** **
+** This file is part of dvisvgm -- a fast DVI to SVG converter **
+** Copyright (C) 2005-2019 Martin Gieseking <martin.gieseking@uos.de> **
+** **
+** This program is free software; you can redistribute it and/or **
+** modify it under the terms of the GNU 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 General Public License for more details. **
+** **
+** You should have received a copy of the GNU General Public License **
+** along with this program; if not, see <http://www.gnu.org/licenses/>. **
+*************************************************************************/
+
+#include <algorithm>
+#include <array>
+#include <map>
+#include "SVGOptimizer.hpp"
+#include "../SVGTree.hpp"
+
+#include "AttributeExtractor.hpp"
+#include "GroupCollapser.hpp"
+#include "RedundantElementRemover.hpp"
+#include "TransformSimplifier.hpp"
+#include "WSNodeRemover.hpp"
+
+using namespace std;
+
+string SVGOptimizer::MODULE_SEQUENCE;
+
+SVGOptimizer::SVGOptimizer (SVGTree *svg) : _svg(svg) {
+ // optimizer modules available to the user; must be listed in default order
+// _moduleEntries.emplace_back(ModuleEntry("remove-ws", util::make_unique<WSNodeRemover>()));
+ _moduleEntries.emplace_back(ModuleEntry("group-attributes", util::make_unique<AttributeExtractor>()));
+ _moduleEntries.emplace_back(ModuleEntry("collapse-groups", util::make_unique<GroupCollapser>()));
+ _moduleEntries.emplace_back(ModuleEntry("simplify-transform", util::make_unique<TransformSimplifier>()));
+ _moduleEntries.emplace_back(ModuleEntry("remove-clippath", util::make_unique<RedundantElementRemover>()));
+}
+
+
+void SVGOptimizer::execute () {
+ if (!_svg || MODULE_SEQUENCE == "none")
+ return;
+ if (MODULE_SEQUENCE.empty())
+ MODULE_SEQUENCE = "remove-clippath"; // default behaviour of previous dvisvgm releases
+ if (MODULE_SEQUENCE == "all") {
+ for (const auto &entry : _moduleEntries)
+ entry.module->execute(_svg->defsNode(), _svg->pageNode());
+ }
+ else {
+ vector<string> names = util::split(MODULE_SEQUENCE, ",");
+ for (const string &name : names) {
+ if (OptimizerModule *module = getModule(name))
+ module->execute(_svg->defsNode(), _svg->pageNode());
+ }
+ }
+}
+
+
+void SVGOptimizer::listModules (ostream &os) const {
+ size_t maxlen=0;
+ map<string, const char*> infos;
+ for (const auto &entry : _moduleEntries) {
+ maxlen = max(maxlen, entry.modname.length());
+ infos.emplace(entry.modname, entry.module->info());
+ }
+ for (const auto &infopair : infos) {
+ os << setw(maxlen) << left << infopair.first;
+ os << " | " << infopair.second << '\n';
+ }
+}
+
+
+/** Checks if all module names given in a comma-separated list are known.
+ * @param[in] namestr comma-separated list of module names
+ * @param[out] unknownNames names not recognized
+ * @return true if all names are known */
+bool SVGOptimizer::checkModuleString (string &namestr, vector<string> &unknownNames) const {
+ unknownNames.clear();
+ if (namestr.empty() || namestr == "all" || namestr == "none")
+ return true;
+ vector<string> givenNames = util::split(namestr, ",");
+ for (const string &name : givenNames) {
+ if (!getModule(name))
+ unknownNames.emplace_back(name);
+ }
+ return unknownNames.empty();
+}
+
+
+OptimizerModule* SVGOptimizer::getModule (const string &name) const {
+ auto it = find_if(_moduleEntries.begin(), _moduleEntries.end(), [&](const ModuleEntry &entry) {
+ return entry.modname == name;
+ });
+ if (it != _moduleEntries.end())
+ return (*it).module.get();
+ return nullptr;
+}
+