1 files changed, 136 insertions, 0 deletions
diff --git a/src/actions/actions-node-align.cpp b/src/actions/actions-node-align.cpp
new file mode 100644
index 0000000..89e446a
--- /dev/null
+++ b/src/actions/actions-node-align.cpp
@@ -0,0 +1,136 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Gio::Actions for aligning and distributing objects without GUI.
+ *
+ * Copyright (C) 2020 Tavmjong Bah
+ *
+ * Some code and ideas from src/ui/dialogs/align-and-distribute.cpp
+ *   Authors: Bryce Harrington
+ *            Martin Owens
+ *            John Smith
+ *            Patrick Storz
+ *            Jabier Arraiza
+ *
+ * The contents of this file may be used under the GNU General Public License Version 2 or later.
+ *
+ * To do: Remove GUI dependency!
+ */
+
+#include "actions-node-align.h"
+
+#include <iostream>
+#include <limits>
+
+#include <giomm.h>  // Not <gtkmm.h>! To eventually allow a headless version!
+#include <glibmm/i18n.h>
+
+#include <2geom/coord.h>
+
+#include "inkscape-application.h"
+#include "inkscape-window.h"
+#include "ui/tool/node-types.h"
+#include "ui/tool/multi-path-manipulator.h" // Node align/distribute
+#include "ui/tools/node-tool.h"             // Node align/distribute
+
+using Inkscape::UI::AlignTargetNode;
+
+void
+node_align(const Glib::VariantBase& value, InkscapeWindow* win, Geom::Dim2 direction)
+{
+    auto tool = win->get_desktop()->getEventContext();
+    auto node_tool = dynamic_cast<Inkscape::UI::Tools::NodeTool*>(tool);
+    if (node_tool) {
+    } else {
+        std::cerr << "node_align: tool is not Node tool!" << std::endl;
+        return;
+    }
+
+    Glib::Variant<Glib::ustring> s = Glib::VariantBase::cast_dynamic<Glib::Variant<Glib::ustring> >(value);
+    std::vector<Glib::ustring> tokens = Glib::Regex::split_simple(" ", s.get());
+    if (tokens.size() > 1) {
+        std::cerr << "node_align: too many arguments!" << std::endl;
+        return;
+    }
+
+    // clang-format off
+    auto target = AlignTargetNode::MID_NODE;
+    if (tokens.size() == 1) {
+        std::string token = tokens[0];
+        if (token == "pref") {
+            Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+            token = prefs->getString("/dialogs/align/nodes-align-to", "first");
+        }
+        if      (token == "last"   ) target = AlignTargetNode::LAST_NODE;
+        else if (token == "first"  ) target = AlignTargetNode::FIRST_NODE;
+        else if (token == "middle" ) target = AlignTargetNode::MID_NODE;
+        else if (token == "min"    ) target = AlignTargetNode::MIN_NODE;
+        else if (token == "max"    ) target = AlignTargetNode::MAX_NODE;
+    }
+    // clang-format on
+    node_tool->_multipath->alignNodes(direction, target);
+} 
+
+void
+node_distribute(InkscapeWindow* win, Geom::Dim2 direction)
+{
+    auto tool = win->get_desktop()->getEventContext();
+    auto node_tool = dynamic_cast<Inkscape::UI::Tools::NodeTool*>(tool);
+    if (node_tool) {
+    } else {
+        std::cerr << "node_distribute: tool is not Node tool!" << std::endl;
+        return;
+    }
+
+    node_tool->_multipath->distributeNodes(direction);
+} 
+
+std::vector<std::vector<Glib::ustring>> raw_data_node_align =
+{
+    // clang-format off
+    {"win.node-align-horizontal",       N_("Align nodes horizontally"),      "Node", N_("Align selected nodes horizontally; usage [last|first|middle|min|max|pref]" )},
+    {"win.node-align-vertical",         N_("Align nodes vertically"),        "Node", N_("Align selected nodes vertically; usage [last|first|middle|min|max|pref]"   )},
+    {"win.node-distribute-horizontal",  N_("Distribute nodes horizontally"), "Node", N_("Distribute selected nodes horizontally."                              )},
+    {"win.node-distribute-vertical",    N_("Distribute nodes vertically"),   "Node", N_("Distribute selected nodes vertically."                                )}
+    // clang-format on
+};
+
+std::vector<std::vector<Glib::ustring>> hint_data_node_align =
+{
+    // clang-format off
+    {"app.node-align-horizontal",      N_("Enter string for alignment anchor, one of: first/last/middle/min/max")},
+    {"app.node-align-vertical",        N_("Enter string for alignment anchor, one of: first/last/middle/min/max")},
+    // clang-format on
+};
+
+// These are window actions as the require the node tool to be active and nodes to be selected.
+void
+add_actions_node_align(InkscapeWindow* win)
+{
+    Glib::VariantType String(Glib::VARIANT_TYPE_STRING);
+
+    // clang-format off
+    win->add_action_with_parameter( "node-align-horizontal",      String, sigc::bind<InkscapeWindow*, Geom::Dim2>(sigc::ptr_fun(&node_align),      win, Geom::X));
+    win->add_action_with_parameter( "node-align-vertical",        String, sigc::bind<InkscapeWindow*, Geom::Dim2>(sigc::ptr_fun(&node_align),      win, Geom::Y));
+    win->add_action(                "node-distribute-horizontal",         sigc::bind<InkscapeWindow*, Geom::Dim2>(sigc::ptr_fun(&node_distribute), win, Geom::X));
+    win->add_action(                "node-distribute-vertical",           sigc::bind<InkscapeWindow*, Geom::Dim2>(sigc::ptr_fun(&node_distribute), win, Geom::Y));
+    // clang-format on
+
+    auto app = InkscapeApplication::instance();
+    if (!app) {
+        std::cerr << "add_actions_node_align: no app!" << std::endl;
+        return;
+    }
+    app->get_action_extra_data().add_data(raw_data_node_align);
+}
+
+
+/*
+  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 :