1 files changed, 77 insertions, 0 deletions
diff --git a/src/ui/tool/curve-drag-point.h b/src/ui/tool/curve-drag-point.h
new file mode 100644
index 0000000..bfe0ad7
--- /dev/null
+++ b/src/ui/tool/curve-drag-point.h
@@ -0,0 +1,77 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* Authors:
+ *   Krzysztof Kosiński <tweenk.pl@gmail.com>
+ *   Jon A. Cruz <jon@joncruz.org>
+ *
+ * Copyright (C) 2009 Authors
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#ifndef SEEN_UI_TOOL_CURVE_DRAG_POINT_H
+#define SEEN_UI_TOOL_CURVE_DRAG_POINT_H
+
+#include "ui/tool/control-point.h"
+#include "ui/tool/node.h"
+
+class SPDesktop;
+namespace Inkscape {
+namespace UI {
+
+class PathManipulator;
+struct PathSharedData;
+
+// This point should be invisible to the user - use the invisible_cset from control-point.h
+// TODO make some methods from path-manipulator.cpp public so that this point doesn't have
+// to be declared as a friend
+/**
+ * An invisible point used to drag curves. This point is used by PathManipulator to allow editing
+ * of path segments by dragging them. It is defined in a separate file so that the node tool
+ * can check if the mouseovered control point is a curve drag point and update the cursor
+ * accordingly, without the need to drag in the full PathManipulator header.
+ */
+class CurveDragPoint : public ControlPoint {
+public:
+
+    CurveDragPoint(PathManipulator &pm);
+    void setSize(double sz) { _setSize(sz); }
+    void setTimeValue(double t) { _t = t; }
+    double getTimeValue() { return _t; }
+    void setIterator(NodeList::iterator i) { first = i; }
+    NodeList::iterator getIterator() { return first; }
+    bool _eventHandler(Inkscape::UI::Tools::ToolBase *event_context, GdkEvent *event) override;
+
+protected:
+
+    Glib::ustring _getTip(unsigned state) const override;
+    void dragged(Geom::Point &, GdkEventMotion *) override;
+    bool grabbed(GdkEventMotion *) override;
+    void ungrabbed(GdkEventButton *) override;
+    bool clicked(GdkEventButton *) override;
+    bool doubleclicked(GdkEventButton *) override;
+
+private:
+    double _t;
+    PathManipulator &_pm;
+    NodeList::iterator first;
+
+    static bool _drags_stroke;
+    static bool _segment_was_degenerate;
+    static Geom::Point _stroke_drag_origin;
+    void _insertNode(bool take_selection);
+};
+
+} // namespace UI
+} // namespace Inkscape
+
+#endif
+
+/*
+  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 :