1 /** @file
2 * Node selection - stores a set of nodes and applies transformations
3 * to them
4 */
5 /* Authors:
6 * Krzysztof KosiĆski <tweenk.pl@gmail.com>
7 *
8 * Copyright (C) 2009 Authors
9 * Released under GNU GPL, read the file 'COPYING' for more information
10 */
12 #ifndef SEEN_UI_TOOL_NODE_SELECTION_H
13 #define SEEN_UI_TOOL_NODE_SELECTION_H
15 #include <memory>
16 #include <tr1/unordered_map>
17 #include <tr1/unordered_set>
18 #include <boost/shared_ptr.hpp>
19 #include <boost/weak_ptr.hpp>
20 #include <boost/optional.hpp>
21 #include <sigc++/sigc++.h>
22 #include <2geom/forward.h>
23 #include <2geom/point.h>
24 #include "display/display-forward.h"
25 #include "util/accumulators.h"
26 #include "util/hash.h"
27 #include "ui/tool/commit-events.h"
28 #include "ui/tool/manipulator.h"
30 class SPDesktop;
32 namespace Inkscape {
33 namespace UI {
34 class TransformHandleSet;
35 class SelectableControlPoint;
36 }
37 }
39 namespace Inkscape {
40 namespace UI {
42 class ControlPointSelection : public Manipulator {
43 public:
44 ControlPointSelection(SPDesktop *d, SPCanvasGroup *th_group);
45 ~ControlPointSelection();
46 typedef std::list<sigc::connection> connlist_type;
47 typedef std::tr1::unordered_map< SelectableControlPoint *,
48 boost::shared_ptr<connlist_type> > map_type;
49 typedef std::tr1::unordered_set< SelectableControlPoint * > set_type;
50 typedef set_type Set; // convenience alias
52 typedef map_type::iterator iterator;
53 typedef map_type::const_iterator const_iterator;
54 typedef map_type::size_type size_type;
55 typedef SelectableControlPoint *value_type;
56 typedef SelectableControlPoint *key_type;
58 // size
59 bool empty() { return _points.empty(); }
60 size_type size() { return _points.size(); }
62 // iterators
63 iterator begin() { return _points.begin(); }
64 const_iterator begin() const { return _points.begin(); }
65 iterator end() { return _points.end(); }
66 const_iterator end() const { return _points.end(); }
68 // insert
69 std::pair<iterator, bool> insert(const value_type& x);
70 template <class InputIterator>
71 void insert(InputIterator first, InputIterator last) {
72 for (; first != last; ++first) {
73 insert(*first);
74 }
75 }
77 // erase
78 void clear();
79 void erase(iterator pos);
80 size_type erase(const key_type& k);
81 void erase(iterator first, iterator last);
83 // find
84 iterator find(const key_type &k) { return _points.find(k); }
86 // Sometimes it is very useful to keep a list of all selectable points.
87 set_type const &allPoints() const { return _all_points; }
88 set_type &allPoints() { return _all_points; }
89 // ...for example in these methods. Another useful case is snapping.
90 void selectAll();
91 void selectArea(Geom::Rect const &);
92 void invertSelection();
93 void spatialGrow(SelectableControlPoint *origin, int dir);
95 virtual bool event(GdkEvent *);
97 void transform(Geom::Matrix const &m);
98 void align(Geom::Dim2 d);
99 void distribute(Geom::Dim2 d);
101 Geom::OptRect pointwiseBounds();
102 Geom::OptRect bounds();
104 void showTransformHandles(bool v, bool one_node);
105 // the two methods below do not modify the state; they are for use in manipulators
106 // that need to temporarily hide the handles, for example when moving a node
107 void hideTransformHandles();
108 void restoreTransformHandles();
109 void toggleTransformHandlesMode();
111 sigc::signal<void> signal_update;
112 sigc::signal<void, SelectableControlPoint *, bool> signal_point_changed;
113 sigc::signal<void, CommitEvent> signal_commit;
114 private:
115 // The functions below are invoked from SelectableControlPoint.
116 // Previously they were connected to handlers when selecting, but this
117 // creates problems when dragging a point that was not selected.
118 void _pointGrabbed();
119 void _pointDragged(Geom::Point const &, Geom::Point &, GdkEventMotion *);
120 void _pointUngrabbed();
121 bool _pointClicked(SelectableControlPoint *, GdkEventButton *);
123 void _updateTransformHandles(bool preserve_center);
124 bool _keyboardMove(GdkEventKey const &, Geom::Point const &);
125 bool _keyboardRotate(GdkEventKey const &, int);
126 bool _keyboardScale(GdkEventKey const &, int);
127 bool _keyboardFlip(Geom::Dim2);
128 void _keyboardTransform(Geom::Matrix const &);
129 void _commitTransform(CommitEvent ce);
130 map_type _points;
131 set_type _all_points;
132 boost::optional<double> _rot_radius;
133 TransformHandleSet *_handles;
134 SelectableControlPoint *_grabbed_point;
135 unsigned _dragging : 1;
136 unsigned _handles_visible : 1;
137 unsigned _one_node_handles : 1;
139 friend class SelectableControlPoint;
140 };
142 } // namespace UI
143 } // namespace Inkscape
145 #endif
147 /*
148 Local Variables:
149 mode:c++
150 c-file-style:"stroustrup"
151 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
152 indent-tabs-mode:nil
153 fill-column:99
154 End:
155 */
156 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :