src/ui/tool/curve-drag-point.h

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /* Authors:
   3  *   Krzysztof Kosiński <tweenk.pl@gmail.com>
   4  *   Jon A. Cruz <jon@joncruz.org>
   5  *
   6  * Copyright (C) 2009 Authors
   7  * Released under GNU GPL v2+, read the file 'COPYING' for more information.
   8  */
   9
  10 #ifndef INKSCAPE_UI_TOOL_CURVE_DRAG_POINT_H
  11 #define INKSCAPE_UI_TOOL_CURVE_DRAG_POINT_H
  12
  13 #include "ui/tool/control-point.h"
  14 #include "ui/tool/node.h"
  15
  16 class SPDesktop;
  17 namespace Inkscape::UI {
  18
  19 class PathManipulator;
  20 struct PathSharedData;
  21
  22 // This point should be invisible to the user
  23 // TODO make some methods from path-manipulator.cpp public so that this point doesn't have
  24 // to be declared as a friend
  25 /**
  26  * An invisible point used to drag curves. This point is used by PathManipulator to allow editing
  27  * of path segments by dragging them. It is defined in a separate file so that the node tool
  28  * can check if the mouseovered control point is a curve drag point and update the cursor
  29  * accordingly, without the need to drag in the full PathManipulator header.
  30  */
  31 class CurveDragPoint : public ControlPoint
  32 {
  33 public:
  34     CurveDragPoint(PathManipulator &pm);
  35     void setSize(double sz) { _setSize(sz); }
  36     void setTimeValue(double t) { _t = t; }
  37     double getTimeValue() { return _t; }
  38     void setIterator(NodeList::iterator i) { first = i; }
  39     NodeList::iterator getIterator() { return first; }
  40     bool _eventHandler(Inkscape::UI::Tools::ToolBase *event_context, CanvasEvent const &event) override;
  41
  42 protected:
  43     Glib::ustring _getTip(unsigned state) const override;
  44     void dragged(Geom::Point &, MotionEvent const &) override;
  45     bool grabbed(MotionEvent const &) override;
  46     void ungrabbed(ButtonReleaseEvent const *) override;
  47     bool clicked(ButtonReleaseEvent const &) override;
  48     bool doubleclicked(ButtonReleaseEvent const &) override;
  49
  50 private:
  51     double _t;
  52     PathManipulator &_pm;
  53     NodeList::iterator first;
  54
  55     static bool _drags_stroke;
  56     static bool _segment_was_degenerate;
  57     static Geom::Point _stroke_drag_origin;
  58     void _insertNode(bool take_selection);
  59 };
  60
  61 } // namespace Inkscape::UI
  62
  63 #endif // INKSCAPE_UI_TOOL_CURVE_DRAG_POINT_H
  64
  65 /*
  66   Local Variables:
  67   mode:c++
  68   c-file-style:"stroustrup"
  69   c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
  70   indent-tabs-mode:nil
  71   fill-column:99
  72   End:
  73 */
  74 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :