1 |
|
|
/*************************************************************** |
2 |
|
|
QGVCore |
3 |
|
|
Copyright (c) 2014, Bergont Nicolas, All rights reserved. |
4 |
|
|
|
5 |
|
|
This library is free software; you can redistribute it and/or |
6 |
|
|
modify it under the terms of the GNU Lesser General Public |
7 |
|
|
License as published by the Free Software Foundation; either |
8 |
|
|
version 3.0 of the License, or (at your option) any later version. |
9 |
|
|
|
10 |
|
|
This library is distributed in the hope that it will be useful, |
11 |
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 |
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 |
|
|
Lesser General Public License for more details. |
14 |
|
|
|
15 |
|
|
You should have received a copy of the GNU Lesser General Public |
16 |
|
|
License along with this library. |
17 |
|
|
***************************************************************/ |
18 |
|
|
#include <QGVCore.h> |
19 |
|
|
#include <QGVEdge.h> |
20 |
|
|
#include <QGVEdgePrivate.h> |
21 |
|
|
#include <QGVGraphPrivate.h> |
22 |
|
|
#include <QGVScene.h> |
23 |
|
|
|
24 |
|
|
#include <QDebug> |
25 |
|
|
#include <QPainter> |
26 |
|
|
|
27 |
|
|
QGVEdge::QGVEdge(QGVEdgePrivate *edge, QGVScene *scene) |
28 |
|
|
: _scene(scene), _edge(edge) { |
29 |
|
|
setFlag(QGraphicsItem::ItemIsSelectable, true); |
30 |
|
|
} |
31 |
|
|
|
32 |
|
|
QGVEdge::~QGVEdge() { |
33 |
|
|
_scene->removeItem(this); |
34 |
|
|
delete _edge; |
35 |
|
|
} |
36 |
|
|
|
37 |
|
|
QString QGVEdge::label() const { return getAttribute("xlabel"); } |
38 |
|
|
|
39 |
|
|
QRectF QGVEdge::boundingRect() const { |
40 |
|
|
return _path.boundingRect() | _head_arrow.boundingRect() | |
41 |
|
|
_tail_arrow.boundingRect() | _label_rect; |
42 |
|
|
} |
43 |
|
|
|
44 |
|
|
QPainterPath QGVEdge::shape() const { |
45 |
|
|
QPainterPathStroker ps; |
46 |
|
|
ps.setCapStyle(_pen.capStyle()); |
47 |
|
|
ps.setWidth(_pen.widthF() + 10); |
48 |
|
|
ps.setJoinStyle(_pen.joinStyle()); |
49 |
|
|
ps.setMiterLimit(_pen.miterLimit()); |
50 |
|
|
return ps.createStroke(_path); |
51 |
|
|
} |
52 |
|
|
|
53 |
|
|
void QGVEdge::setLabel(const QString &label) { setAttribute("xlabel", label); } |
54 |
|
|
|
55 |
|
|
void QGVEdge::paint(QPainter *painter, const QStyleOptionGraphicsItem *, |
56 |
|
|
QWidget *) { |
57 |
|
|
painter->save(); |
58 |
|
|
|
59 |
|
|
if (isSelected()) { |
60 |
|
|
QPen tpen(_pen); |
61 |
|
|
tpen.setColor(_pen.color().darker(120)); |
62 |
|
|
tpen.setStyle(Qt::DotLine); |
63 |
|
|
painter->setPen(tpen); |
64 |
|
|
} else |
65 |
|
|
painter->setPen(_pen); |
66 |
|
|
|
67 |
|
|
painter->drawPath(_path); |
68 |
|
|
|
69 |
|
|
/* |
70 |
|
|
QRectF pp = _path.controlPointRect(); |
71 |
|
|
if(pp.width() < pp.height()) |
72 |
|
|
{ |
73 |
|
|
painter->save(); |
74 |
|
|
painter->translate(_label_rect.topLeft()); |
75 |
|
|
painter->rotate(90); |
76 |
|
|
painter->drawText(QRectF(QPointF(0, -_label_rect.width()), |
77 |
|
|
_label_rect.size()), Qt::AlignCenter, _label); painter->restore(); |
78 |
|
|
} |
79 |
|
|
else |
80 |
|
|
*/ |
81 |
|
|
painter->drawText(_label_rect, Qt::AlignCenter, _label); |
82 |
|
|
|
83 |
|
|
// painter->setBrush(QBrush(_pen.color(), Qt::SolidPattern)); |
84 |
|
|
painter->drawPolygon(_head_arrow); |
85 |
|
|
painter->drawPolygon(_tail_arrow); |
86 |
|
|
painter->restore(); |
87 |
|
|
} |
88 |
|
|
|
89 |
|
|
void QGVEdge::setAttribute(const QString &name, const QString &value) { |
90 |
|
|
char empty[] = ""; |
91 |
|
|
agsafeset(_edge->edge(), name.toLocal8Bit().data(), |
92 |
|
|
value.toLocal8Bit().data(), empty); |
93 |
|
|
} |
94 |
|
|
|
95 |
|
|
QString QGVEdge::getAttribute(const QString &name) const { |
96 |
|
|
char *value = agget(_edge->edge(), name.toLocal8Bit().data()); |
97 |
|
|
if (value) return value; |
98 |
|
|
return QString(); |
99 |
|
|
} |
100 |
|
|
|
101 |
|
|
void QGVEdge::updateLayout() { |
102 |
|
|
prepareGeometryChange(); |
103 |
|
|
|
104 |
|
|
qreal gheight = QGVCore::graphHeight(_scene->_graph->graph()); |
105 |
|
|
|
106 |
|
|
const splines *spl = ED_spl(_edge->edge()); |
107 |
|
|
_path = QGVCore::toPath(spl, gheight); |
108 |
|
|
|
109 |
|
|
// Edge arrows |
110 |
|
|
if ((spl->list != 0) && (spl->list->size % 3 == 1)) { |
111 |
|
|
if (spl->list->sflag) { |
112 |
|
|
_tail_arrow = |
113 |
|
|
toArrow(QLineF(QGVCore::toPoint(spl->list->list[0], gheight), |
114 |
|
|
QGVCore::toPoint(spl->list->sp, gheight))); |
115 |
|
|
} |
116 |
|
|
|
117 |
|
|
if (spl->list->eflag) { |
118 |
|
|
_head_arrow = toArrow(QLineF( |
119 |
|
|
QGVCore::toPoint(spl->list->list[spl->list->size - 1], gheight), |
120 |
|
|
QGVCore::toPoint(spl->list->ep, gheight))); |
121 |
|
|
} |
122 |
|
|
} |
123 |
|
|
|
124 |
|
|
_pen.setWidth(QGVCore::toPenWidth(getAttribute("penwidth"))); |
125 |
|
|
_pen.setColor(QGVCore::toColor(getAttribute("color"))); |
126 |
|
|
_pen.setStyle(QGVCore::toPenStyle(getAttribute("style"))); |
127 |
|
|
|
128 |
|
|
// Edge label |
129 |
|
|
textlabel_t *xlabel = ED_xlabel(_edge->edge()); |
130 |
|
|
if (xlabel) { |
131 |
|
|
_label = xlabel->text; |
132 |
|
|
_label_rect.setSize(QSize(xlabel->dimen.x, xlabel->dimen.y)); |
133 |
|
|
_label_rect.moveCenter(QGVCore::toPoint( |
134 |
|
|
xlabel->pos, QGVCore::graphHeight(_scene->_graph->graph()))); |
135 |
|
|
} |
136 |
|
|
|
137 |
|
|
setToolTip(getAttribute("tooltip")); |
138 |
|
|
} |
139 |
|
|
|
140 |
|
|
QPolygonF QGVEdge::toArrow(const QLineF &line) const { |
141 |
|
|
QLineF n = line.normalVector(); |
142 |
|
|
QPointF o(n.dx() / 3.0, n.dy() / 3.0); |
143 |
|
|
|
144 |
|
|
// Only support normal arrow type |
145 |
|
|
QPolygonF polygon; |
146 |
|
|
polygon.append(line.p1() + o); |
147 |
|
|
polygon.append(line.p2()); |
148 |
|
|
polygon.append(line.p1() - o); |
149 |
|
|
|
150 |
|
|
return polygon; |
151 |
|
|
} |