//! [3]
void DiagramScene::setItemColor(const QColor &color)
{
myItemColor = color;
if (isItemChange(DiagramItem::Type)) {
DiagramItem *item = qgraphicsitem_cast<DiagramItem *>(selectedItems().first());
item->setBrush(myItemColor);
}
}
//! [6]
void DiagramScene::mousePressEvent(QGraphicsSceneMouseEvent *mouseEvent)
{
if (mouseEvent->button() != Qt::LeftButton)
return;
DiagramItem *item;
switch (myMode) {
case InsertItem:
item = new DiagramItem(myItemType, myItemMenu);
item->setBrush(myItemColor);
addItem(item);
item->setPos(mouseEvent->scenePos());
emit itemInserted(item);
break;
//! [6] //! [7]
case InsertLine:
line = new QGraphicsLineItem(QLineF(mouseEvent->scenePos(),
mouseEvent->scenePos()));
line->setPen(QPen(myLineColor, 2));
addItem(line);
break;
//! [7] //! [8]
case InsertText:
textItem = new DiagramTextItem();
textItem->setFont(myFont);
textItem->setTextInteractionFlags(Qt::TextEditorInteraction);
textItem->setZValue(1000.0);
connect(textItem, SIGNAL(lostFocus(DiagramTextItem*)),
this, SLOT(editorLostFocus(DiagramTextItem*)));
connect(textItem, SIGNAL(selectedChange(QGraphicsItem*)),
this, SIGNAL(itemSelected(QGraphicsItem*)));
addItem(textItem);
textItem->setDefaultTextColor(myTextColor);
textItem->setPos(mouseEvent->scenePos());
emit textInserted(textItem);
//! [8] //! [9]
default:
;
}
QGraphicsScene::mousePressEvent(mouseEvent);
}
void DiagramScene::addHexagon(int count)
{
std::cout << "-------------- addHexagon------------------,count = " << count << std::endl;
DiagramItem *item;
item = new DiagramItem(myItemType, myItemMenu);
item->setBrush(myItemColor);
addItem(item);
count*=100;
QPointF point(100+count,100+count);
item->setPos(point);
// // draw polygon
// static const QPointF points[6] = {
// QPointF(-0.5, 0.866+count),
// QPointF(0.5, 0.866+count),
// QPointF(1, 0+count),
// QPointF(0.5, -0.866+count),
// QPointF(-0.5, -0.866+count),
// QPointF(-1,0+count)
// };
// this->painter->drawPolygon(points, 6);
}