Developer Documentation

connectionPoint.cc
1 /*===========================================================================*\
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40 \*===========================================================================*/
41
42
43
44 //== INCLUDES =================================================================
45 #include <QPolygonF>
46 #include <QGraphicsItem>
47 #include <QFontMetrics>
48 #include <QPainter>
49
50 #include "connectionPoint.hh"
51 #include "connection.hh"
52 #include "elementInOut.hh"
53 #include "graphicsScene.hh"
54 #include "elementArea.hh"
55 #include "text.hh"
56 #include "../parser/inout.hh"
57
58 #define SIZE 20
59
60 //== NAMESPACES ===============================================================
61 namespace VSI {
62
63 //=============================================================================
64 //
65 // CLASS VSI::ConnectionPoint - IMPLEMENTATION
66 //
67 //=============================================================================
68
69
70 QColor colors_[] = { QColor(255, 0, 0),
71 QColor(255, 0, 255),
72 QColor(255, 128, 0),
73 QColor(224, 224, 0),
74 QColor(0, 192, 0),
75 QColor(0, 0, 255) };
76
77 //------------------------------------------------------------------------------
78
80 ConnectionPoint::ConnectionPoint (ElementInOut *_e, QGraphicsItem *_parent) :
81 QGraphicsEllipseItem (_parent),
82 inout_ (_e),
83 width_ (5)
84 {
85 setRect (0, 0, width_, width_);
86
87 setBrush (QColor (64,64,64));
88
89 setAcceptHoverEvents (true);
90 }
91
92 //------------------------------------------------------------------------------
93
95 ConnectionPoint::~ConnectionPoint ()
96 {
97 }
98
99 //------------------------------------------------------------------------------
100
102 void ConnectionPoint::setGeometry (const QRectF &_rect)
103 {
104 QGraphicsEllipseItem::setPos (_rect.topLeft ());
105 QGraphicsLayoutItem::setGeometry (_rect);
106 setRect (0, 0, width_, width_);
107 }
108
109 //------------------------------------------------------------------------------
110
111 // size informations for layouting
112 QSizeF ConnectionPoint::sizeHint (Qt::SizeHint _which, const QSizeF &/*_constraint*/) const
113 {
114 QSizeF sh;
115 switch (_which) {
116 case Qt::MinimumSize:
117 case Qt::PreferredSize:
118 case Qt::MaximumSize:
119 sh = QSizeF(width_, width_);
120 break;
121 default:
122 break;
123 }
124
125 return sh;
126 }
127
128 //------------------------------------------------------------------------------
129
130 // start a new connection on press
131 void ConnectionPoint::mousePressEvent (QGraphicsSceneMouseEvent *_event)
132 {
133 Connection *c = new Connection (this, scene ());
134 static_cast<GraphicsScene *>(scene ())->setActiveConnection (c);
135 QGraphicsEllipseItem::mousePressEvent(_event);
136 }
137
138 //------------------------------------------------------------------------------
139
141 QPointF ConnectionPoint::connectPos ()
142 {
143 QGraphicsItem *elementArea = dynamic_cast<GraphicsScene *> (scene ())->elementArea ();
144
145 if (inout_->type () == ElementInOut::TypeInput)
146 return elementArea->mapFromScene (mapToScene (QPointF (0, width_ / 2)));
147 return elementArea->mapFromScene (mapToScene (QPointF (width_, width_ / 2)));
148 }
149
150 //------------------------------------------------------------------------------
151
153 void ConnectionPoint::setState(State _state)
154 {
155 setBrush (colors_[_state]);
156
157 QString stateStr;
158
159 switch (_state)
160 {
161 case NoValue:
162 stateStr = "[NOT CONNECTED]";
163 break;
164 case Optional:
165 stateStr = "[OPTIONAL]";
166 break;
167 case RuntimeInput:
168 stateStr = "[ASK DURING EXECUTION]";
169 break;
170 case UserInput:
171 stateStr = "[CONSTANT SET]";
172 break;
173 case Connected:
174 stateStr = "[CONNECTED]";
175 break;
176 case OutputNotConnected:
177 stateStr = "[NOT CONNECTED]";
178 break;
179 }
180
181 stateStr += " " + inout_->inOut ()->longDescription () + " (" + inout_->inOut ()->typeString () + ")";
182 setToolTip (stateStr);
183 inout_->typeTextItem ()->setToolTip (stateStr);
184 inout_->descriptionTextItem ()->setToolTip (stateStr);
185 }
186
187 //------------------------------------------------------------------------------
188
189 // highlight connection if mouse over
190 void ConnectionPoint::hoverEnterEvent (QGraphicsSceneHoverEvent * /*_event*/)
191 {
192 foreach (Connection *c, inout_->connections ())
193 {
194 QPen p = c->pen ();
195
196 if (inOut ()->inOut ()->typeString () == "data")
197 p.setWidth (6);
198 else
199 p.setWidth (4);
200
201 p.setColor (QColor (0, 0, 255));
202 c->setPen (p);
203 }
204 }
205
206 //------------------------------------------------------------------------------
207
208 // remove highlight
209 void ConnectionPoint::hoverLeaveEvent (QGraphicsSceneHoverEvent * /*_event*/)
210 {
211 foreach (Connection *c, inout_->connections ())
212 {
213 QPen p = c->pen ();
214
215 if (inOut ()->inOut ()->typeString () == "data")
216 p.setWidth (4);
217 else
218 p.setWidth (2);
219
220 p.setColor (QColor (0, 0, 0));
221 c->setPen (p);
222 }
223 }
224
225 //------------------------------------------------------------------------------
226
228 void ConnectionPoint::setWidth(int _width)
229 {
230 width_ = _width;
231 updateGeometry ();
232 }
233
234 //------------------------------------------------------------------------------
235
236 // painting
237 void ConnectionPoint::paint(QPainter *_painter, const QStyleOptionGraphicsItem * _option, QWidget *_widget)
238 {
239 QGraphicsEllipseItem::paint (_painter, _option, _widget);
240
241 float wH = width_ / 2.0;
242 float wT = width_ / 3.0;
243 float wS = width_ / 6.0;
244
245 QPainterPath path;
246 path.moveTo (0, 0);
247 path.arcTo (0, 0, width_, width_, 0, 360);
248
249 QRadialGradient rG (QPointF(width_ * 0.8, width_), width_ * 0.8);
250 rG.setColorAt(0, QColor (255, 255, 255, 128));
251 rG.setColorAt(1, Qt::transparent);
252 _painter->setBrush (rG);
253 _painter->setPen (Qt::NoPen);
254 _painter->drawPath (path);
255
256 path = QPainterPath ();
257 path.moveTo (1, wH);
258 path.arcTo (1, 1, width_ - 2, width_ - 2, 180, - 165);
259 path.cubicTo (QPointF (wH + wT, wH + wS), QPointF (wH + wS, wH - wS), QPointF (wH, wH));
260 path.cubicTo (QPointF (wT, wH + wS), QPointF (wS, wH + wS), QPointF (1, wH));
261
262 rG.setCenter (wS, 0);
263 rG.setFocalPoint(wS, 0);
264 rG.setRadius (width_);
265 rG.setColorAt(0, Qt::white);
266 rG.setColorAt(1, Qt::transparent);
267 _painter->setBrush (rG);
268 _painter->setPen (Qt::NoPen);
269 _painter->drawPath(path);
270 }
271
272 //------------------------------------------------------------------------------
273 }
VSI::ElementInOut::inOut
InOut * inOut() const
InOut context object.
Definition: elementInOut.hh:110
VSI::GraphicsScene
Definition: graphicsScene.hh:80
VSI::ConnectionPoint::connectPos
QPointF connectPos()
Position for connections.
Definition: connectionPoint.cc:141
VSI::ElementInOut
Definition: elementInOut.hh:69
VSI::InOut::typeString
QString typeString() const
Type.
Definition: inout.cc:65
VSI::Connection
Definition: connection.hh:66
VSI::ConnectionPoint::State
State
State of the connection point.
Definition: connectionPoint.hh:75
VSI::ElementInOut::descriptionTextItem
Text * descriptionTextItem() const
Short description widget.
Definition: elementInOut.hh:95
VSI::ConnectionPoint::~ConnectionPoint
~ConnectionPoint()
Destructor.
Definition: connectionPoint.cc:95
VSI::ElementInOut::typeTextItem
Text * typeTextItem() const
Type text widget.
Definition: elementInOut.hh:92
VSI::InOut::longDescription
const QString & longDescription() const
Long description.
Definition: inout.hh:76
VSI::ConnectionPoint::setGeometry
virtual void setGeometry(const QRectF &_rect)
Sets the geometry.
Definition: connectionPoint.cc:102
VSI::ConnectionPoint::ConnectionPoint
ConnectionPoint(ElementInOut *_e, QGraphicsItem *_parent)
Constructor.
Definition: connectionPoint.cc:80
VSI::ElementInOut::type
virtual Type type() const =0
Type.
VSI::ConnectionPoint::setWidth
void setWidth(int _width)
Sets the diameter.
Definition: connectionPoint.cc:228
VSI
Definition: baseWidget.cc:72
VSI::ConnectionPoint::setState
void setState(State _state)
sets the state
Definition: connectionPoint.cc:153
VSI::ConnectionPoint::inOut
ElementInOut * inOut() const
Input/output element.
Definition: connectionPoint.hh:91
VSI::ElementInOut::connections
QList< Connection * > connections() const
Connections.
Definition: elementInOut.hh:98