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
132
133
134
|
/* Dia -- an diagram creation/manipulation program
* Copyright (C) 1998 Alexander Larsson
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* ** \file element.h -- Definition of a diagram - usual rectangular - object with eight handles */
#pragma once
#include "diatypes.h"
#include "object.h"
#include "handle.h"
#include "connectionpoint.h"
#include "boundingbox.h"
#include "properties.h" /* win32: PropNumData */
G_BEGIN_DECLS
#define DIA_TYPE_ELEMENT_OBJECT_CHANGE dia_element_object_change_get_type ()
G_DECLARE_FINAL_TYPE (DiaElementObjectChange, dia_element_object_change, DIA, ELEMENT_OBJECT_CHANGE, DiaObjectChange)
/**
* Element:
* @resize_handles: not only for resizing but may also be used for connections
* @corner: upper-left corner of the #Element
* @width: width of the object (with 0 line width)
* @height: height of the object (with 0 line width)
* @extra_spacing: extra data used for bounding box calculation, filled from
* line width
*
* Beside #OrthConn one of the most use object classes
*
* This is a subclass of #DiaObject used to help implementing objects
* of a type with 8 handles.
*/
struct _Element {
/* < private > */
DiaObject object;
/* < public > */
Handle resize_handles[8];
Point corner;
double width;
double height;
ElementBBExtras extra_spacing;
};
/*! \protected Update internal state after property change */
void element_update_handles(Element *elem);
void element_update_connections_rectangle(Element *elem,
ConnectionPoint *cps);
void element_update_connections_directions (Element *elem,
ConnectionPoint *cps);
void element_update_boundingbox(Element *elem);
void element_init(Element *elem, int num_handles, int num_connections);
void element_destroy(Element *elem);
void element_copy(Element *from, Element *to);
DiaObjectChange *element_move_handle (Element *elem,
HandleId id,
Point *to,
ConnectionPoint *cp,
HandleMoveReason reason,
ModifierKeys modifiers);
void element_move_handle_aspect(Element *elem, HandleId id,
Point *to, real aspect_ratio);
void element_save(Element *elem, ObjectNode obj_node, DiaContext *ctx);
void element_load(Element *elem, ObjectNode obj_node, DiaContext *ctx);
DiaObjectChange *element_change_new (const Point *corner,
double width,
double height,
Element *elem);
void element_get_poly (const Element *elem, real angle, Point corners[4]);
/* base property stuff ... */
#ifdef G_OS_WIN32
/* see lib/properties.h for the reason */
static PropNumData width_range = { -G_MAXFLOAT, G_MAXFLOAT, 0.1};
#else
/* use extern on Linux/gcc to avoid
* warning: 'width_range' defined but not used */
extern PropNumData width_range;
#endif
#define ELEMENT_COMMON_PROPERTIES \
OBJECT_COMMON_PROPERTIES, \
{ "elem_corner", PROP_TYPE_POINT, PROP_FLAG_NO_DEFAULTS, \
"Element corner", "The corner of the element"}, \
{ "elem_width", PROP_TYPE_REAL, PROP_FLAG_DONT_MERGE | PROP_FLAG_NO_DEFAULTS | PROP_FLAG_OPTIONAL, \
"Element width", "The width of the element", &width_range}, \
{ "elem_height", PROP_TYPE_REAL, PROP_FLAG_DONT_MERGE | PROP_FLAG_NO_DEFAULTS | PROP_FLAG_OPTIONAL, \
"Element height", "The height of the element", &width_range}
/* Would like to have the frame, but need to figure out why
custom_object ext_attributes lose their updates when they're on
(see http://mail.gnome.org/archives/dia-list/2005-August/msg00053.html)
*/
/*
#define ELEMENT_COMMON_PROPERTIES \
OBJECT_COMMON_PROPERTIES, \
PROP_FRAME_BEGIN("size",0,N_("Object dimensions")), \
{ "elem_corner", PROP_TYPE_POINT, 0, \
"Element corner", "The corner of the element"}, \
{ "elem_width", PROP_TYPE_REAL, PROP_FLAG_VISIBLE, \
"Element width", "The width of the element", &width_range}, \
{ "elem_height", PROP_TYPE_REAL, PROP_FLAG_VISIBLE, \
"Element height", "The height of the element", &width_range}, \
PROP_FRAME_END("size", 0)
*/
#define ELEMENT_COMMON_PROPERTIES_OFFSETS \
OBJECT_COMMON_PROPERTIES_OFFSETS, \
{ "elem_corner", PROP_TYPE_POINT, offsetof(Element, corner) }, \
{ "elem_width", PROP_TYPE_REAL, offsetof(Element, width) }, \
{ "elem_height", PROP_TYPE_REAL, offsetof(Element, height) }
G_END_DECLS
|
