1 files changed, 191 insertions, 0 deletions
diff --git a/src/ui/tools/connector-tool.h b/src/ui/tools/connector-tool.h
new file mode 100644
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--- /dev/null
+++ b/src/ui/tools/connector-tool.h
@@ -0,0 +1,191 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SEEN_CONNECTOR_CONTEXT_H
+#define SEEN_CONNECTOR_CONTEXT_H
+
+/*
+ * Connector creation tool
+ *
+ * Authors:
+ *   Michael Wybrow <mjwybrow@users.sourceforge.net>
+ *
+ * Copyright (C) 2005 Michael Wybrow
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <map>
+#include <optional>
+#include <string>
+
+#include <2geom/point.h>
+#include <sigc++/connection.h>
+
+#include "display/curve.h"
+
+#include "ui/tools/tool-base.h"
+
+#include "xml/node-observer.h"
+
+class SPItem;
+class SPCurve;
+class SPKnot;
+
+namespace Avoid {
+    class ConnRef;
+}
+
+namespace Inkscape {
+    class CanvasItemBpath;
+    class Selection;
+
+    namespace XML {
+        class Node;
+    }
+}
+
+#define SP_CONNECTOR_CONTEXT(obj) (dynamic_cast<Inkscape::UI::Tools::ConnectorTool*>((Inkscape::UI::Tools::ToolBase*)obj))
+//#define SP_IS_CONNECTOR_CONTEXT(obj) (dynamic_cast<const ConnectorTool*>((const ToolBase*)obj) != NULL)
+
+enum {
+    SP_CONNECTOR_CONTEXT_IDLE,
+    SP_CONNECTOR_CONTEXT_DRAGGING,
+    SP_CONNECTOR_CONTEXT_CLOSE,
+    SP_CONNECTOR_CONTEXT_STOP,
+    SP_CONNECTOR_CONTEXT_REROUTING,
+    SP_CONNECTOR_CONTEXT_NEWCONNPOINT
+};
+
+using SPKnotList = std::map<SPKnot *, int>;
+
+namespace Inkscape::UI::Tools {
+
+class ConnectorTool;
+
+class CCToolShapeNodeObserver : public Inkscape::XML::NodeObserver
+{
+    friend class ConnectorTool;
+    ~CCToolShapeNodeObserver() override = default; // can only exist as a direct base of ConnectorTool
+
+    void notifyAttributeChanged(Inkscape::XML::Node &, GQuark, Util::ptr_shared, Util::ptr_shared) final;
+};
+
+class CCToolLayerNodeObserver : public Inkscape::XML::NodeObserver
+{
+    friend class ConnectorTool;
+    ~CCToolLayerNodeObserver() override = default; // can only exist as a direct base of ConnectorTool
+
+    void notifyChildRemoved(Inkscape::XML::Node &, Inkscape::XML::Node &, Inkscape::XML::Node *) final;
+};
+
+class ConnectorTool
+    : public ToolBase
+    , private CCToolShapeNodeObserver
+    , private CCToolLayerNodeObserver
+{
+public:
+    ConnectorTool(SPDesktop *desktop);
+    ~ConnectorTool() override;
+
+    Inkscape::Selection *selection{nullptr};
+    Geom::Point p[5];
+
+    /** \invar npoints in {0, 2}. */
+    gint npoints{0};
+    unsigned int state : 4;
+
+    // Red curve
+    Inkscape::CanvasItemBpath *red_bpath{nullptr};
+    std::optional<SPCurve> red_curve;
+    guint32 red_color{0xff00007f};
+
+    // Green curve
+    std::optional<SPCurve> green_curve;
+
+    // The new connector
+    SPItem *newconn{nullptr};
+    Avoid::ConnRef *newConnRef{nullptr};
+    gdouble curvature{0.0};
+    bool isOrthogonal{false};
+
+    // The active shape
+    SPItem *active_shape{nullptr};
+    Inkscape::XML::Node *active_shape_repr{nullptr};
+    Inkscape::XML::Node *active_shape_layer_repr{nullptr};
+
+    // Same as above, but for the active connector
+    SPItem *active_conn{nullptr};
+    Inkscape::XML::Node *active_conn_repr{nullptr};
+    sigc::connection sel_changed_connection;
+
+    // The activehandle
+    SPKnot *active_handle{nullptr};
+
+    // The selected handle, used in editing mode
+    SPKnot *selected_handle{nullptr};
+
+    SPItem *clickeditem{nullptr};
+    SPKnot *clickedhandle{nullptr};
+
+    SPKnotList knots;
+    SPKnot *endpt_handle[2]{};
+    sigc::connection endpt_handler_connection[2];
+    gchar *shref{nullptr};
+    gchar *sub_shref{nullptr};
+    gchar *ehref {nullptr};
+    gchar *sub_ehref{nullptr};
+
+    void set(const Inkscape::Preferences::Entry& val) override;
+    bool root_handler(GdkEvent* event) override;
+    bool item_handler(SPItem* item, GdkEvent* event) override;
+
+    void cc_clear_active_shape();
+    void cc_set_active_conn(SPItem *item);
+    void cc_clear_active_conn();
+
+private:
+    void _selectionChanged(Inkscape::Selection *selection);
+
+    bool _handleButtonPress(GdkEventButton const &bevent);
+    bool _handleMotionNotify(GdkEventMotion const &mevent);
+    bool _handleButtonRelease(GdkEventButton const &revent);
+    bool _handleKeyPress(guint const keyval);
+
+    void _setInitialPoint(Geom::Point const p);
+    void _setSubsequentPoint(Geom::Point const p);
+    void _finishSegment(Geom::Point p);
+    void _resetColors();
+    void _finish();
+    void _concatColorsAndFlush();
+    void _flushWhite(SPCurve *gc);
+
+    void _activeShapeAddKnot(SPItem* item, SPItem* subitem);
+    void _setActiveShape(SPItem *item);
+    bool _ptHandleTest(Geom::Point& p, gchar **href, gchar **subhref);
+
+    void _reroutingFinish(Geom::Point *const p);
+
+    CCToolShapeNodeObserver &shapeNodeObserver() { return *this; }
+    CCToolLayerNodeObserver &layerNodeObserver() { return *this; }
+    friend CCToolShapeNodeObserver;
+    friend CCToolLayerNodeObserver;
+};
+
+void cc_selection_set_avoid(SPDesktop *, bool const set_ignore);
+void cc_create_connection_point(ConnectorTool* cc);
+void cc_remove_connection_point(ConnectorTool* cc);
+bool cc_item_is_connector(SPItem *item);
+
+} // namespace Inkscape::UI::Tools
+
+#endif /* !SEEN_CONNECTOR_CONTEXT_H */
+
+/*
+  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:fileencoding=utf-8:textwidth=99 :