1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
#ifndef SEEN_KNOT_HOLDER_ENTITY_H
#define SEEN_KNOT_HOLDER_ENTITY_H
/*
* Authors:
* Mitsuru Oka <oka326@parkcity.ne.jp>
* Maximilian Albert <maximilian.albert@gmail.com>
*
* Copyright (C) 1999-2001 Lauris Kaplinski
* Copyright (C) 2000-2001 Ximian, Inc.
* Copyright (C) 2001 Mitsuru Oka
* Copyright (C) 2004 Monash University
* Copyright (C) 2008 Maximilian Albert
*
* Released under GNU GPL
*/
#include <glib.h>
#include "knot.h"
#include <2geom/forward.h>
#include "snapper.h"
#include "display/sp-canvas-item.h"
class SPItem;
struct SPKnot;
class SPDesktop;
class KnotHolder;
namespace Inkscape {
namespace LivePathEffect {
class Effect;
} // namespace LivePathEffect
} // namespace Inkscape
typedef void (* SPKnotHolderSetFunc) (SPItem *item, Geom::Point const &p, Geom::Point const &origin, guint state);
typedef Geom::Point (* SPKnotHolderGetFunc) (SPItem *item);
/**
* KnotHolderEntity definition.
*/
class KnotHolderEntity {
public:
KnotHolderEntity():
knot(NULL),
item(NULL),
desktop(NULL),
parent_holder(NULL),
my_counter(0)
{}
virtual ~KnotHolderEntity();
virtual void create(SPDesktop *desktop, SPItem *item, KnotHolder *parent,
Inkscape::ControlType type = Inkscape::CTRL_TYPE_UNKNOWN,
const gchar *tip = "",
SPKnotShapeType shape = SP_KNOT_SHAPE_DIAMOND,
SPKnotModeType mode = SP_KNOT_MODE_XOR,
guint32 color = 0xffffff00);
/* the get/set/click handlers are virtual functions; each handler class for a knot
should be derived from KnotHolderEntity and override these functions */
virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, guint state) = 0;
virtual Geom::Point knot_get() = 0;
virtual void knot_click(guint /*state*/) {}
void update_knot();
//private:
Geom::Point snap_knot_position(Geom::Point const &p, guint state);
Geom::Point snap_knot_position_constrained(Geom::Point const &p, Inkscape::Snapper::SnapConstraint const &constraint, guint state);
SPKnot *knot;
SPItem *item;
SPDesktop *desktop;
KnotHolder *parent_holder;
int my_counter;
static int counter;
/** Connection to \a knot's "moved" signal. */
guint handler_id;
/** Connection to \a knot's "clicked" signal. */
guint _click_handler_id;
/** Connection to \a knot's "ungrabbed" signal. */
guint _ungrab_handler_id;
sigc::connection _moved_connection;
sigc::connection _click_connection;
sigc::connection _ungrabbed_connection;
};
// derived KnotHolderEntity class for LPEs
class LPEKnotHolderEntity : public KnotHolderEntity {
public:
LPEKnotHolderEntity(Inkscape::LivePathEffect::Effect *effect) : _effect(effect) {};
protected:
Inkscape::LivePathEffect::Effect *_effect;
};
/* pattern manipulation */
class PatternKnotHolderEntityXY : public KnotHolderEntity {
public:
virtual Geom::Point knot_get();
virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, guint state);
};
class PatternKnotHolderEntityAngle : public KnotHolderEntity {
public:
virtual Geom::Point knot_get();
virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, guint state);
};
class PatternKnotHolderEntityScale : public KnotHolderEntity {
public:
virtual Geom::Point knot_get();
virtual void knot_set(Geom::Point const &p, Geom::Point const &origin, guint state);
};
#endif /* !SEEN_KNOT_HOLDER_ENTITY_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 :
|
