Root/Software/sie_cg/diagramitem.cpp

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41
42#include <QtGui>
43
44#include "diagramitem.h"
45#include "diagramscene.h"
46#include "arrow.h"
47#include "diagramtextitem.h"
48#include "lineitem.h"
49
50DiagramItem::DiagramItem(
51                            QMenu *contextMenu,
52                            QString diagramType,
53                            QDomElement *domElement,
54                            QGraphicsItem *parent, QGraphicsScene *scene,
55                            QPointF position, double zV)
56    : QGraphicsPolygonItem(parent, scene)
57{
58    myDiagramType = diagramType;
59    myContextMenu = contextMenu;
60    myOwnerScene = scene;
61    myDomElement=domElement;
62    setPos(position);
63    setZValue(zV);
64    myColor = Qt::white;
65
66    for (QDomNode node = myDomElement->firstChild() ;
67         !node.isNull() ;
68         node = node.nextSibling())
69    {
70        QDomElement element = node.toElement();
71        if(element.tagName()=="Polygon")
72        {
73            //READING POLYGON POINTS
74            QList<QPointF> points;
75            for (QDomNode node = element.firstChild() ;
76                             !node.isNull() ;
77                             node = node.nextSibling())
78            {
79                QDomElement point = node.toElement();
80                if(point.tagName()=="Point")
81                    points.append(QPointF(
82                                  point.attribute("x").toFloat(),
83                                  point.attribute("y").toFloat()));
84            }
85            //CREATING POLYGON
86            if(points.count()>0)
87                foreach(QPointF p, points)
88                    myPolygon << p;
89
90        }
91        else if(element.tagName()=="TextItems" && myOwnerScene!=0)
92        {
93            for (QDomNode node = element.firstChild() ;
94                             !node.isNull() ;
95                             node = node.nextSibling())
96            {
97                QDomElement textItemE = node.toElement();
98            if(textItemE.tagName()=="TextItem")
99            {
100                int myStyleIO = textItemE.attribute("myStyleIO").
101                                toInt();
102                int myID = textItemE.attribute("ID").toInt();
103                bool editableItem = textItemE.attribute("editableItem").
104                                    toInt();
105                QPointF posOffset=
106                        QPointF(textItemE.attribute("posOffset-x").
107                                toFloat(),
108                                -textItemE.attribute("posOffset-y").
109                                toFloat());
110                QString itemString=textItemE.attribute("text");
111
112                DiagramTextItem * newTextItem =
113                 new DiagramTextItem(0,myOwnerScene,editableItem,this,myStyleIO,
114                                    myID,itemString,posOffset);
115                myOwnerScene->addItem(newTextItem);
116                newTextItem->setZValue(zValue());
117                addText(newTextItem);
118            }
119
120            }
121        }
122    }
123
124    setPolygon(myPolygon);
125    setFlag(QGraphicsItem::ItemIsMovable, true);
126    setFlag(QGraphicsItem::ItemIsSelectable, true);
127    setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
128    setFlag(QGraphicsItem::ItemSendsScenePositionChanges, true);
129}
130
131bool DiagramItem::setValue(unsigned char ID, QString value)
132{
133    foreach(DiagramTextItem *item, textItems)
134    {
135        if(item->isEditable())
136        {
137            if(item->textID()==ID)
138                item->setPlainText(value);
139        }
140    }
141    return 1;
142}
143
144DiagramTextItem *DiagramItem::pointerText(unsigned char ID)
145{
146    foreach(DiagramTextItem *item, textItems)
147    {
148            if(item->textID()==ID)
149                return item;
150    }
151    return 0;
152}
153
154bool DiagramItem::textIsIO(unsigned char ID)
155{
156    foreach(DiagramTextItem *item, textItems)
157    {
158            if(item->textID()==ID)
159                if(item->styleIO()!=0)
160                    return 1;
161    }
162    return 0;
163}
164
165bool DiagramItem::existText(DiagramTextItem * text)
166{
167    foreach(DiagramTextItem *item, textItems)
168    {
169            if(item==text)
170                return 1;
171    }
172    return 0;
173}
174
175unsigned char DiagramItem::existArrow(DiagramTextItem *startItem,
176                                     DiagramTextItem *endItem)
177{
178    foreach (Arrow *arrow, arrows) {
179        if(arrow->startItem() == startItem &&
180           arrow->endItem() == endItem)
181            return 1; //Already exist
182        else if(arrow->endItem()== endItem)
183            return 1; //End item (INPOUT) already connected
184    }
185    return 0;
186}
187
188void DiagramItem::removeArrow(Arrow *arrow)
189{
190    int index = arrows.indexOf(arrow);
191
192    if (index != -1)
193        arrows.removeAt(index);
194}
195
196void DiagramItem::removeArrows()
197{
198    foreach (Arrow *arrow, arrows) {
199        arrow->startItem()->ownerItem()->removeArrow(arrow);
200        arrow->endItem()->ownerItem()->removeArrow(arrow);
201        arrow->removeLines();
202        scene()->removeItem(arrow);
203        delete arrow;
204    }
205}
206
207void DiagramItem::addArrow(Arrow *arrow)
208{
209    arrows.append(arrow);
210}
211
212void DiagramItem::removeTextItem(DiagramTextItem *textItem)
213{
214    int index = textItems.indexOf(textItem);
215
216    if (index != -1)
217        textItems.removeAt(index);
218}
219
220void DiagramItem::removeTextItems()
221{
222    foreach (DiagramTextItem *textItem, textItems) {
223        textItem->ownerItem()->removeTextItem(textItem);
224        scene()->removeItem(textItem);
225        delete textItem;
226    }
227}
228
229QPixmap DiagramItem::image() const
230{
231    QSize mySize=this->boundingRect().size().toSize()*1.4;
232    QPixmap pixmap(mySize);
233    pixmap.fill(Qt::transparent);
234    QPainter painter(&pixmap);
235    int penWidth;
236    if(mySize.width()>mySize.height())
237        penWidth = int(mySize.width()/32);
238    else
239        penWidth = int(mySize.height()/32);
240
241    painter.setPen(QPen(Qt::black, penWidth));
242    painter.translate(mySize.width()/2, mySize.height()/2);
243    QPolygonF Polygon = myPolygon;
244    Polygon = Polygon << Polygon.first(); //Adjust the last segment
245    painter.drawPolyline(Polygon);
246    //TODO text on icon may be interesting
247    return pixmap;
248}
249
250void DiagramItem::contextMenuEvent(QGraphicsSceneContextMenuEvent *event)
251{
252    scene()->clearSelection();
253    setSelected(true);
254    myContextMenu->exec(event->screenPos());
255}
256
257QVariant DiagramItem::itemChange(GraphicsItemChange change,
258                     const QVariant &value)
259{
260    if (change == QGraphicsItem::ItemPositionChange) {
261        positionChanged=1;
262    }
263    return value;
264}
265
266void DiagramItem::updateTexts()
267{
268    foreach (DiagramTextItem *texts, textItems) {
269        texts->updatePosition();
270    }
271}
272
273void DiagramItem::mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent)
274{
275    positionChanged=0;
276    qobject_cast<DiagramScene *>(myOwnerScene)->saveUndo();
277    QGraphicsPolygonItem::mousePressEvent(mouseEvent);
278}
279
280void DiagramItem::mouseMoveEvent(QGraphicsSceneMouseEvent *mouseEvent)
281{
282    updateTexts();
283    foreach (Arrow *arrow, arrows) {
284        arrow->updatePosition();
285    }
286    QGraphicsPolygonItem::mouseMoveEvent(mouseEvent);
287}
288
289void DiagramItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *mouseEvent)
290{
291    foreach (DiagramTextItem *texts, textItems) {
292        texts->updatePosition();
293    }
294    foreach (Arrow *arrow, arrows) {
295        arrow->updatePosition();
296    }
297
298    if(!positionChanged)
299        qobject_cast<DiagramScene *>(myOwnerScene)->removeLastUndo();
300    else
301        qobject_cast<DiagramScene *>(myOwnerScene)->clearRedo();
302
303    QGraphicsPolygonItem::mouseReleaseEvent(mouseEvent);
304}
305
306QDomElement DiagramItem::toXml(QDomDocument &document) const
307{
308        QDomElement diagramItem = document.createElement("DiagramItem");
309
310        //Set attibutes; type and position
311        diagramItem.setAttribute("type",diagramType());
312        diagramItem.setAttribute("x",pos().x());
313        diagramItem.setAttribute("y",pos().y());
314        diagramItem.setAttribute("z",zValue());
315        diagramItem.setAttribute("color",myColor.name());
316
317        //Lists of values (text on editable labels)
318        int i=0;
319        QDomElement diagramValues = document.createElement("diagramValues");
320        foreach(DiagramTextItem *item, textItems)
321        {
322            if(item->isEditable())
323            {
324                QDomElement diagramValue = document.createElement("diagramValue");
325                diagramValue.setAttribute("value", item->toPlainText());
326                diagramValue.setAttribute("ID", item->textID());
327                i++;
328                diagramValues.appendChild(diagramValue);
329            }
330        }
331        diagramItem.appendChild(diagramValues);
332
333        return (diagramItem);
334}
335
336

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