99e183b4530c656ecca0c4ab9ec929394ab974e6
1 /** @file
2 * Path manipulator - a component that edits a single path on-canvas
3 */
4 /* Authors:
5 * Krzysztof KosiĆski <tweenk.pl@gmail.com>
6 *
7 * Copyright (C) 2009 Authors
8 * Released under GNU GPL, read the file 'COPYING' for more information
9 */
11 #ifndef SEEN_UI_TOOL_PATH_MANIPULATOR_H
12 #define SEEN_UI_TOOL_PATH_MANIPULATOR_H
14 #include <string>
15 #include <memory>
16 #include <2geom/pathvector.h>
17 #include <2geom/matrix.h>
18 #include <boost/shared_ptr.hpp>
19 #include <boost/weak_ptr.hpp>
20 #include "display/display-forward.h"
21 #include "forward.h"
22 #include "ui/tool/node.h"
23 #include "ui/tool/manipulator.h"
25 struct SPCanvasItem;
27 namespace Inkscape {
28 namespace XML { class Node; }
30 namespace UI {
32 class PathManipulator;
33 class ControlPointSelection;
34 class PathManipulatorObserver;
35 class CurveDragPoint;
36 class PathCanvasGroups;
37 class MultiPathManipulator;
38 class Node;
40 struct PathSharedData {
41 NodeSharedData node_data;
42 SPCanvasGroup *outline_group;
43 SPCanvasGroup *dragpoint_group;
44 };
46 /**
47 * Manipulator that edits a single path using nodes with handles.
48 * Currently only cubic bezier and linear segments are supported, but this might change
49 * some time in the future.
50 */
51 class PathManipulator : public PointManipulator {
52 public:
53 typedef SPPath *ItemType;
55 PathManipulator(MultiPathManipulator &mpm, SPPath *path, Geom::Matrix const &edit_trans,
56 guint32 outline_color, Glib::ustring lpe_key);
57 ~PathManipulator();
58 virtual bool event(GdkEvent *);
60 bool empty();
61 void writeXML();
62 void update(); // update display, but don't commit
63 void clear(); // remove all nodes from manipulator
64 SPPath *item() { return _path; }
66 void selectSubpaths();
67 void shiftSelection(int dir);
68 void invertSelectionInSubpaths();
70 void insertNodes();
71 void weldNodes(NodeList::iterator preserve_pos = NodeList::iterator());
72 void weldSegments();
73 void breakNodes();
74 void deleteNodes(bool keep_shape = true);
75 void deleteSegments();
76 void reverseSubpaths();
77 void setSegmentType(SegmentType);
79 void showOutline(bool show);
80 void showHandles(bool show);
81 void showPathDirection(bool show);
82 void setControlsTransform(Geom::Matrix const &);
83 void hideDragPoint();
85 NodeList::iterator subdivideSegment(NodeList::iterator after, double t);
86 NodeList::iterator extremeNode(NodeList::iterator origin, bool search_selected,
87 bool search_unselected, bool closest);
89 static bool is_item_type(void *item);
90 private:
91 typedef NodeList Subpath;
92 typedef boost::shared_ptr<NodeList> SubpathPtr;
94 void _createControlPointsFromGeometry();
95 void _createGeometryFromControlPoints();
96 std::string _createTypeString();
97 void _updateOutline();
98 //void _setOutline(Geom::PathVector const &);
99 void _getGeometry();
100 void _setGeometry();
101 Glib::ustring _nodetypesKey();
102 Inkscape::XML::Node *_getXMLNode();
104 void _attachNodeHandlers(Node *n);
105 void _removeNodeHandlers(Node *n);
107 void _selectionChanged(SelectableControlPoint *p, bool selected);
108 bool _nodeClicked(Node *, GdkEventButton *);
109 void _handleGrabbed();
110 bool _handleClicked(Handle *, GdkEventButton *);
111 void _handleUngrabbed();
112 void _externalChange(unsigned type);
113 void _removeNodesFromSelection();
114 void _commit(Glib::ustring const &annotation);
115 void _updateDragPoint(Geom::Point const &);
116 void _updateOutlineOnZoomChange();
117 double _getStrokeTolerance();
119 SubpathList _subpaths;
120 MultiPathManipulator &_multi_path_manipulator;
121 SPPath *_path;
122 SPCurve *_spcurve; // in item coordinates
123 SPCanvasItem *_outline;
124 CurveDragPoint *_dragpoint; // an invisible control point hoverng over curve
125 PathManipulatorObserver *_observer;
126 Geom::Matrix _d2i_transform; ///< desktop-to-item transform
127 Geom::Matrix _i2d_transform; ///< item-to-desktop transform, inverse of _d2i_transform
128 Geom::Matrix _edit_transform; ///< additional transform to apply to editing controls
129 unsigned _num_selected; ///< number of selected nodes
130 bool _show_handles;
131 bool _show_outline;
132 bool _show_path_direction;
133 Glib::ustring _lpe_key;
135 friend class PathManipulatorObserver;
136 friend class CurveDragPoint;
137 friend class Node;
138 };
140 } // namespace UI
141 } // namespace Inkscape
143 #endif
145 /*
146 Local Variables:
147 mode:c++
148 c-file-style:"stroustrup"
149 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
150 indent-tabs-mode:nil
151 fill-column:99
152 End:
153 */
154 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :